When grown for the fiber rather than the seed, flax is sown thickly, to keep the plants growing straight with little branching. Weeding is necessary only once, when flax has grown to about six inches. Modern fertilization might help, but if the soil contains too much nitrogen, each flax plant will yield less fiber (EB14f 430). When grown for the seed, flax is sown much less thickly, so that each plant branches and produces more seed.
Flax is subject to wilt, and several other fungi and viruses. For this reason, flax is not planted in the same field year after year; a field should have at least five years between crops of flax. Resistant strains of flax were developed early in the twentieth century, becoming available around 1920 (EB14f 431). No flax was grown in the area transferred in the Ring of Fire, however, and redeveloping resistant strains, starting with only the conviction that it can be done, will take some time.Cotton (Gossypium spp.) is a tropical plant. It is imported from the Levant (Syria to Egypt); most of it is grown in India, and nearly all of it, no matter where it is grown, is G. herbaceum, Indian cotton. Some is G. arboreum, tree cotton, also a native of India. Up-time Egyptian cotton is not a native of Egypt; G. barbadense is a native of South America and, down-time, is grown only as Sea Island cotton, not having been introduced to Egypt yet. The English colony of Virginia began cultivating G. hirsutum, Upland cotton, which is native to tropical North America, in 1621 (Hartsuch 164); there was still very little cotton in England as late as 1640. The German states, being closer to the Levant, may have more cotton at this time.
Cotton is subject to many insect pests; the boll weevil is simply the most famous. Cotton must be hoed
to reduce weed growth, chopped, constantly, as the plants are grown too far apart to shade out weeds.Grantville can do little to affect the cultivation of cotton, as most of it is grown far away.Silk (coc.o.o.n of Bombyx mori) needs a warm climate. James I of England tried to find one in his own territories, but was unsuccessful.
Silkworms cannot be cared for by machines; in fact, up-time silkworms get more human attention than down-time worms did. In the nineteenth century, the silk industry experienced a great die-off. Pasteur was consulted and determined that the worms must not be crowded, that the eggs must be microscopically inspected for disease, that only the best coc.o.o.ns should be allowed to produce breeding stock (Barker 2978).
An important part of sericulture is the cultivation of mulberry; an ounce of silkworm eggs plus a ton of leaves yields 12 pounds of reeled silk (EB14h 522). * * *
Up-timer biological and agricultural knowledge will be useful. While specifics known to Grantvillers may not be applicable, the general principles can be applied in the search for improvement.
Harvesting and Processing.
Much of the initial processing of the fibers is done where the product was raised, primarily because of the cost or difficulty of transport and the lack of any use for the by-products. Wool grease and the accompanying dirt are washed out of the fleece a week or more before the sheep are sheared. Cotton seeds weigh about three times as much as the lint, and are discarded in place.
Wool. The shearing of sheep is much faster up-time than down-time. With the old-style hand clippers, a man could shear 30 plus or minus 10 sheep in one day; with modern powered clippers, he can do about 100 plus or minus 20 (Van Nostron). This does not mean that the same shearing will be accomplished by a third as many people; individual sheep will have to be captured and dragged to the shearer at the greater rate, and their fleeces folded and packed. Up-time, a shearer works four two-hour sessions in a day.
Down-time, all sheep are sheared with scissor-style clippers: shearing blades set on a flat spring. Uptime, most sheep are sheared with an electric handpiece, invented about 1900, much like the ones used to shear recruits in boot camp. But the desired outcome of shearing sheep is not a bald sheep; it is a good fleece. While the up-time handpiece can shear closer than the old clippers can, it also requires more care in avoiding skin tags and bits of sheep that protrude. Nicking the sheep"s skin is a very bad thing-it exposes the animal to infection and infestation, and besides, blood is so hard to get out of wool.
In the twenty-first century, the modern shears are powered by distributed electricity or individual batteries. Before the power grid spread everywhere, they were powered by small motors set on the rafters of the shearing shed, or by someone turning a crank.
When a sheep is sheared, the locks of wool cling to each other, forming a fleece. Shearing usually begins down the middle of the underside of the sheep, so that the edges of the fleece are belly wool. This permits skirting of the fleece, the removal of the matted belly wool, which can be sent to the lanolin boilers. Then the fleece is folded, tips in and cut ends out, rolled up, and tied. The fleeces are packed into woolsacks-the English woolsack held 364 pounds of wool (Hartley 135)-ready for shipment by the wool merchants. Up-time, compressing the pack is done with a mechanical press, instead of by people walking on the fleeces in the sack.
Flax and Hemp. The harvesting of flax is done by hand-even up-time. These plants must be uprooted, pulled up by hand; if the plants are cut from the roots, or the roots removed later, the fibers will be degraded in the process that separates pith and outer coating from the fibers of the phloem (EA 576). A field of flax is harvested all at once, by a line of all available people crossing the field, although the shorter plants and the longer are separated. Harvesting of flax for fiber is best done before the seeds are ripe; harvesting later yields less flax of poorer quality. A field of hemp is harvested in two pa.s.ses, the male plants first and the female plants ten days or two weeks later.
Different regions handle harvested flax somewhat differently, but in nearly all, the seeds are rippled free immediately; the tops of the plants are pulled through a comb with the seeds falling onto a sheet below. After that there is a drying period; the flax is stooked in the field to dry for a few days in the sun. In parts of Flanders, the flax is then stored in a shed for a full year, but in most places, it is retted immediately. Retting is the way that the boon, the pith and the outer coating, is partially rotted to free the fibers. Down-time, retting is often done in a pool dug near a stream. The length of time depends on the weather; it takes at least ten days, and can take up to three weeks. The water left after retting cannot be discarded into the stream, as it will have a detrimental effect on the fish, but can be spread over the fields as a fertilizer (Moore 50). Up-time, retting is done in huge, temperature-controlled, indoor tanks; with the temperature at a constant 80F, retting takes about a week (EB14f 430). When retting has progressed as far as it should, the flax is dried again, and the boon is broken, by means of a hand-operated breaking box. Scutching, done with a board and a paddle, removes the boon completely. Then the flax must be hackled, combed, to separate the line flax, 20 to 30 inches long, from the shorter tow. (Line flax becomes strong linen thread; tow is used unspun for stuffing, or can be spun into a softer, weaker thread.) Up-time, all of these procedures, rippling through hackling, even drying, are performed by machine, instead of by hand with simple tools. In both systems, the plants and the resulting fibers are kept as parallel as possible.
After breaking, scutching, and hackling, the flax goes to the women of the area for spinning. Most of the hemp will go to the men of the rope walk; a nineteenth-century man-of-war used 80 long tons of hemp, the yearly product of 320 acres (Hartley 157). The longer fibers of hemp are not easily handled by distaff and spinning wheel (Davenport, Spinning 98); only the shorter hemp fibers go for clothing.
Cotton. Harvesting cotton continues through much of the growing season, as each plant has flowers, developing bolls, and ripe cotton all at once. The first harvester was developed in the 1850s; it stripped the plants, leaving only the stalks. This was extremely wasteful, and required more hand labor to separate the mature cotton from everything else. Immature ("dead") cotton cannot be spun and woven. It was not until the 1940s that the modern spinner harvester was fully developed; it pulls the mature cotton, which is expanding out of the bolls, free (EB14c 90H). The spinner designed for Upland cotton, which bursts upward, cannot be used for Indian cotton, which spills downward.
Up-time, cotton is shipped with the seeds still present. Down-time, seeds are removed by hand right after the cotton is picked. When the gin was first invented, it was used on the farm, because of the costs of transportation-cotton seed is two-thirds or more of the weight (Peake 19)-and because there was little use for cotton seed. Without modern oil-pressing machinery, cottonseed oil is somewhat toxic (EB14a 615).
Three different cotton gins have been invented. The wire teeth gin invented by Eli Whitney, and the saw gin improvement of it by Hodgen Holmes, damage the lint, especially lint of longer fibers, more than roller gins do (EB11a 259260). Some seeds are broken in ginning, and the bits often stay in the cotton, needing to be removed later-which is, with the full machine processing and handling of up-time, after it is woven. Up-time, the Whitney-Holmes gin is still used for Indian cotton, which produces very short lint.
Cotton linters, the very short fibers that coat the seeds of Indian and Upland cotton but not those of Sea Island or Egyptian, will not be available. These were ignored until the second decade of the twentieth century (Peake 18), when they were found to be useful in several industries (paper, rayon, and "Boom!").
Silk. Up-time, coc.o.o.ns that have set (about a week after being spun) are subjected to high heat, or poisonous fumes, to kill the chrysalids before they can break out of the coc.o.o.ns; they are stored until the factory rep collects them. Down-time, reeling is done on the farm from "live" coc.o.o.ns-they are put into very hot, but not boiling, water to soften the sericin enough to allow unwinding. Live coc.o.o.ns produce silk that is more l.u.s.trous; dead ones yield a more even yarn, better for power weaving (Hooper 33).
One silk fiber (a bave of two brins of fibroin embedded in sericin) is only 1/3000 inch thick (Hooper 4). Several coc.o.o.ns are reeled off together (three to eight-Patterson II 197, or six to twelve-Hooper 34). Of the 4,000 yards a silkworm spins to make one coc.o.o.n, only about half a mile (give or take a couple hundred yards) can be reeled for use (Hartsuch 286287). Down-time, the rest is discarded; not until 1671 was silk waste carded and spun (Hooper 112).
As each coc.o.o.n is exhausted of reelable silk, another coc.o.o.n is added to the pot, until the required length to make a hank has been reeled. The ends are tied together and secured so that they can be found later. Twine is tied around the silk threads at several points in the circle to keep them from tangling, and the hank is removed from the reel.
Some of the methods used in reeling are fairly late: Up-time, coc.o.o.ns are unwound from two pots next to each other, each group onto its own reel, but between the pots and the reels, the two threads are twisted around each other about six times. This croisseur (croissure, croisure), this "essential part" (Hooper 36) that presses the filaments together so that they consolidate, dates from 1828 (Barker 301). The use of gla.s.s rods and rings to guide the fibers between pot and reel is probably established in down-time Italy already; smooth gla.s.s does not snag and impede the silk fibers the way bronze or iron can.
Spinning.
Spinning is the process whereby fibers, either animal or vegetable, are turned into yarn. There are three phases: the fibers are drafted, pulled partway past each other; the resulting length is twisted, so that the fibers curl around each other and do not pull apart; and the spun yarn is wound onto a stick so that it can be stored without unspinning itself or tangling up.
A spinning wheel is a machine that, in combination with a human, performs these tasks, originally a mechanization of the drop spindle. The drop spindle dates back thousands of years; it is a stick with a weight: gyroscope and flywheel. The spinster hitches the spun yarn to one end and starts the spindle spinning; as it spins the fibers, its weight pulls more out of the spinster"s upraised hands. When the spindle reaches the ground, the spinster stops it, unhitches the yarn and winds it around the stick, rehitches the yarn, and starts the spinning and drafting anew.
The most obvious part of a spinning wheel is the drive wheel, turned by the spinster. The rotation of this wheel is transferred to a small wheel, a whorl, part of the spinning mechanism, by way of a drive band, a length of linen or hempen twine. This length is spliced, preferably, but can be tied, into a loop; Amos recommends a knot he calls the "Fisherman"s Bend," but the accompanying ill.u.s.tration shows the Fisherman"s Knot (Ashley #1414). The spinster controls the drafting of the fiber and the amount of twist.
There are two mechanisms by which a spinning wheel imparts twist, the spindle and the flyer/bobbin. A spinning wheel"s spindle is a straight stick, pointed at the front end and with a whorl at the other; with drafted fibers held at a 45 angle to the spindle, the fibers wrap around it and then drop off the end with each rotation, producing one twist in the fibers. The spindle is also the stick for the yarn to be wound upon. This winding is accomplished by first turning the drive wheel the other direction just enough to free the yarn from the point. Then the spinster moves closer to the drive wheel, moving the hand holding the end of the spun length so that the yarn is at a 90 angle to the spindle. When the wheel is rotated again, in the same direction as for spinning (not, as many technology historians report, the opposite direction), the yarn winds onto the far end of the spindle and she moves toward the spindle as it does so.
The flyer/bobbin is a multipart mechanism. The flyer is wishbone-shaped, with the addition of a central shaft ending in a whorl at the far end-overall, it looks like the Greek letter psi. The fiber goes through the orifice: into a hole in the base of the flyer and out through a hole in the side of the base. From there, the fiber goes along one of the arms and is turned around one of the bent metal wires on the arm, a heck, to the bobbin. The bobbin is a hollow cylinder with a f.l.a.n.g.e, a cop, at each end; it fits loosely on the central shaft of the flyer. The bobbin usually has a whorl attached outside the far cop (or the far cop is a whorl), so that it can be turned by the drive wheel too; the drive band describes a folded figure eight, twice around the drive wheel and once around each whorl. The whorls of flyer and bobbin are of different diameters so that their speeds differ. As the flyer rotates, the drafted fibers are twisted, and then wound onto the bobbin. Of course, as the bobbin fills up, the relative speeds need to change; either flyer or bobbin can slip against the drive band. The bobbin is filled in sections; when the diameter of the wound yarn gets too great, the spinster stops the wheel and moves the yarn to the next heck to fill the next section. Leonardo da Vinci drew an oscillating mechanism to wind yarn onto the bobbin from one end to the other and back, obviating the necessity for the spinster to move the yarn (Ponting 3031), but it was never adopted-perhaps not even known to others at the time. When the bobbin is full, the mechanism must be dismantled so that the bobbin can be removed; the drive band is taken off the whorls, the flyer whorl is removed, and the bobbin is slipped off the shaft. A new bobbin is installed, the whorls are replaced, and the drive band is set in place again.
The drive wheel was originally powered by hand. Often, when the drive wheel was supported on only one upright, a peg was attached to one of the spokes for the spinster"s use; her right hand on this peg constantly described a circle, turning the drive wheel. The original spinning wheel, with a drive wheel about 5 feet in diameter, required that the spinster stand. This version is now known as the great wheel.
As far as can be determined at this date, this great wheel always had a spindle. To change the angle of the fibers, the spinster had to walk from one point to another. Her task was complex, especially when she was spinning line flax: She had to turn the wheel, carry the distaff that held the fibers, and use both hands on the fiber itself.
The low wheel, with a drive wheel as small as 18 inches, could be turned by a woman seated in front of it, still using her hand on a peg, with the distaff set conveniently on the spinning wheel"s table. If she was spinning a fiber that needed both hands, she could give the wheel intermittent power pulses. Small drive wheels often have heavier rims, indicating some pre-Newton understanding of angular momentum. The earliest drawing of the low wheel shows the flyer/bobbin, fully developed; of course, the low wheel could also operate with a spindle.
The low wheel replaced the great wheel on the Continent well before the seventeenth century. About the middle of the seventeenth century, some wheels were made with the drive wheel between two uprights, which makes for more stability, but of course the peg could no longer be used. Instead, a hand-crank might be applied to the front of the wheel. While the low wheel could be fitted with a spindle, nearly every drawing and painting of a low wheel shows the flyer/bobbin, which is excellent for flax. England and her colonies lagged behind the Continent in this area. As a result, the only low wheel in Grantville is the one in the museum, which may be of twentieth-century commercial manufacture. This wheel has a treadle, and the midseventeenth-century improvement of a tensioner, too. The only visible part of the tensioner is the tension handle, a peg sticking out of the left-hand end of the table, which may be mistaken for a decorative element, or a handle to a.s.sist in lifting or moving the spinning wheel. But the tensioner is a useful addition to the flyer/bobbin. Turning this peg moves the mother-of-all, the a.s.sembly holding the spinning mechanism, toward and away from the drive wheel, allowing ease in putting the drive band on or removing it. A smaller movement, changing the tension of the drive band just a little, permits the whorls to slip more or less so that the relative speeds of flyer and bobbin change.
The flyer/bobbin mechanism puts strain on the yarn; it works very well for line flax, but not with weak fibers. On the Continent, spinsters used a low wheel fitted with a spindle for cotton and for weaker wool fibers, while in England and her colonies, the great wheel continued to be used for these (even after the low wheel was known there), earning the alternate name of "wool wheel."
* * * Wool, flax, and cotton are very different fibers, requiring different preparation for spinning and different spinning techniques. Silk is in a category of its own, being thrown instead of spun, but the process will be included in this section. Wool. While each breed of sheep produces wool of an expected type, different flocks of sheep, and different parts of one animal, undergo different stresses (weather and friction from botanic and manufactured items). A fleece comprises many locks of wool; within that fleece, these locks vary in color, length, fineness (diameter), handle (the "feel"), and amount of crimp. Before it can go to a spinner, each fleece must be sorted by an expert; each fleece will have six or more grades of wool in it. The sorter will also pull the kemp, the outer coat, which cannot be spun with the wool. Domestic sheep have very little kemp; certain breeds have more than others, and within breeds, the weather affects how much kemp a sheep grows each year.
As a general rule, longer wool fibers are coa.r.s.er and have less crimp than shorter ones; these coa.r.s.er fibers, as long as 18 inches, are worsted, and the finer, crimpier ones, as short as 1.5 inches, are woolen. Worsteds produce a harder yarn, suitable for (up-time) suits and dresses; woolens produce a softer yarn, more easily felted, suitable for (up-time) coats and blankets. Although both trap a lot of air in the yarn because the crimp guarantees that the fibers cannot be completely against each other (worsted is at least 60% air, by volume [Davenport Spinning 20], and woolen more), they feel quite different, and are prepared and spun differently. Each fleece will be all, or primarily, worsted or woolen-or even, perhaps, entirely of very coa.r.s.e wool suited for carpets.
For worsteds, the longer, coa.r.s.er wool is combed: A lock is drawn through tall, fixed combs, working bit by bit from tip to middle and then from cut end to middle, to remove all tangles. The shortest fibers are removed in the process; these noils can be mixed with woolen fibers. The combed lock of tops is called a sliver.
For woolens, the short, fine wool is carded: a lock of wool is spread across a hand card (of wood, studded with bent wires); an identical card, held in the other hand, is drawn across the first. The wool tangles are straightened out as the wool is transferred from one card to the other and back several times. When the fibers are neatly parallel (not tangled and going in every direction as stated by many technology historians), the wool is rolled up, cut ends toward tips, so that the fibers form a cylinder; this is called a rolag.Up-timers may have heard of the hand-tool called the drum carder, intended to replace the hand cards. The drum carder has two cylinders of different sizes, both studded with bent wires. The wool is spread out carefully and one of the cylinders is turned with a handcrank; the other cylinder turns too and, ideally, the wool fibers are parallelized in one rotation of the larger cylinder. The lap is then carefully removed by hand and rolled up. With only the name of the tool, and no drawings or descriptions available, an up-timer may produce a better version of this tool.
Wool needs to be at least a little greasy during combing and carding. If the wool has already been
scoured so that all the natural grease, the yolk, has been removed, olive oil is added, deemed the best grease for the task as it can be washed out easily later. (Even up-time, the preferred grease is oleic oil.) Either oil is added to each lock of wool in the hand as it is prepared for combing or carding (Davenport Spinning 39), or the comb is greased (with either olive oil or b.u.t.ter) and, if necessary, kept near a source of heat to keep the grease soft (Hunter 44). However, unless the wool was dyed in the fleece, requiring scouring beforehand, it should not need to be oiled; wool is best stored and shipped in the grease. (If it was stored too long, the yolk may have solidified, requiring olive oil anyway.) The worsted slivers and the woolen rolags can now be spun. The spinster will hold a sliver or a rolag in her left hand; while she turns the drive wheel with her right hand, she moves her left hand back away from the spinning mechanism, permitting the fibers to be pulled between her thumb and fingers and to be twisted by the action of the wheel. Both sliver and rolag are fed end-first, the sliver from the end of the fibers, and the rolag from the end of the cylinder. As the spinster nears the end of sliver or rolag, she picks up another and its beginning meshes with the end of the first as she drafts.
Some spinsters prefer to join the worsted slivers end to end before actually spinning them, twisting (by hand) just enough to encourage them to hold together; the result can be rolled into a ball. Sliver, ball, or rolag can be kept ready near the wheel: in a bag or basket, or on a shelf.
Flax. Flax-spinning is a delicate process. The spinster dresses the distaff with an ounce or so of fiber. On the Continent, it is common for the strick, a bundle of parallel fibers, to be tied at one end and dropped onto a lantern distaff (cone-shaped) so that the fibers hang all around, then secured by a ribbon wound around. Less common on the Continent, but standard in England, is for the fibers to be layered accordion-fashion on a flat surface, forming a fan-shape; this arrangement is then positioned around a lantern distaff and secured with a ribbon (Davenport Spinning 8388). The Dutch paintings of the time appear to show distaffs dressed by both methods.
When spinning flax, a spinster must apply both hands to the fiber, with the right hand supplying power to the wheel intermittently, as mentioned above. One hand controls supply of fibers near the distaff; the other hand drafts the fibers and then smooths them down, running up ahead of the twist. The smoothing fingers must be wet-water will do, but saliva is better (Davenport Spinning 82; Barber 49n); saliva predigests the flax enough that the individual fibers stick together better than they do with water. Moving the thumb between flax and lip produces a condition known as "flax mouth," with a bad taste for the spinster and foul breath for everyone she meets.
Tow, the shorter lengths separated out by hackling, may be spun, worsted fashion, or used unspun as
stuffing in bedding, pillows, and other items.
The more humid the air, the finer the flax can be spun. Damp bas.e.m.e.nts are a good location if extreme fineness of the yarn is a goal.
Cotton is tightly packed in bales; an up-time Indian bale is 400 pounds, and it is likely that this size dates back a very long time. The cotton lint must be loosened from the pack. A section is removed, placed on a flat surface, and either whipped (beaten with a springy stick that ends in several branchlets) or bowed (vibrated by a string snapped above the ma.s.s). The spinster will pull a slub free from the ma.s.s and spin it much the way worsted is spun, except that cotton is smoother than wool, with the cotton fibers slipping farther past each other more easily.
Cotton is a very short, weak fiber, and Indian cotton is shortest, coa.r.s.est, and weakest of all, being only 3/8 to 5/8 inch long (Peake 40), having a diameter of 25 micrometers (EB14d 226), and having a breaking strain of perhaps 46 grains (Peake 47). A drop spindle cannot be used to spin cotton, as the spindle weighs too much to be supported by the growing yarn. Even the flyer/bobbin may put too much strain on cotton yarn; on the Continent, cotton may be spun on a low wheel with a spindle. In England, as noted above, the great wheel continued in use much longer, used for cotton as well as for wool.
Differences in Commonalties.
In spinning, details matter. Spinsters learn what is appropriate for each fiber, and may well specialize in spinning yarn of only one. Yarns must not be underspun, or they will part. Neither may they be overspun, or they will tangle unmercifully. Each individual fiber must go around 4 or 5 times (Elliott); cotton requires more twists per inch than worsted or line flax does. With the flyer/bobbin mechanism, the yarn must often be r.e.t.a.r.ded from winding onto the bobbin for the drafted length to acquire sufficient spin. When the spinster arrests the feed, the bobbin"s whorl will slip against the drive band, permitting the bobbin and the flyer to spin as one while the flyer imparts twist. Many up-time technology historians state that the flyer/bobbin sped up spinning because it winds yarn at the same time yarn is spun; this is not strictly accurate.
Different fibers are spun in different directions. Down-time, there were many names for the two directions, and neighboring spinsters often used the same word for opposite directions. Not until 1934 did an unknown American suggest the terms "S-spun," with the far end turned counterclockwise, and "Zspun," with the far end turned clockwise (EB14b 622); these names are from the match of the visible slant of the helix with the slant of the middle stroke of the letter. Individual plant fibers have twists themselves; for tighter, more durable yarns, these fibers are spun in accordance with their innate twist. Flax is S-spun; hemp and cotton are Z-spun (Barber 66). Down-timers will not know of the innate twists of the individual fibers, good microscopes being necessary, but women learned, 3,- or 4,000 years ago, that spinning this fiber this way gave more durable yarn with more l.u.s.ter, and pa.s.sed the knowledge to their daughters. Animal fibers have no predilection, but, except for special effects in the eventual cloth, wool has always been Z-spun. No one knows why, but this tradition began long, long ago. With the spinning wheels described above, turning the drive wheel clockwise will produce Z-spun yarn, and turning it counterclockwise will produce S-spun yarn.
To measure the lengths of the new yarn, and to be able to see the length and inspect the quality of the yarn, the spinster winds the yarn off the bobbin into a hank. The niddy-noddy is the standard tool: a wooden rod a foot or so long with a shorter wooden cross-piece at each end; these cross-pieces are at right angles to each other-an artifical forearm. The yarn is hand-wound up, down, and around, to make a hank of known circ.u.mference, with the spinster counting as she goes. The hank is secured so that there is no strain on the yarn, and removed from the niddy-noddy. Yarns must not be too thick, but each fiber is spun within its own range of fineness. Down-time, there may not have been specific measuring guides; while Master Weaver Ziegler wants the yarns he uses to be fine, he specifies no further (Hilts). Gauge systems may have come into use only with spinning machinery, size having been judged by the spinster"s hand before that. Stating the diameter does not work; too many things affect that: the spinster, the stage in bleaching and dyeing, the loft of the yarn, even the color of the dye. Instead, the gauge is defined by the length of a certain weight, and expressed as the number of hanks of specified length in a specified weight. Woolen, worsted, linen, and cotton each have their own hank-lengths-in fact, woolen has several scattered around England and Scotland, and two more in the United States. The one most commonly used for woolen yarn is the Yorkshire count, the number of 256-yard hanks that weigh 1 pound. Other systems for woolens are usually called cut; these vary in both hank-length (200 or 300 yards) and weight (1 pound or 24 ounces). Unique to the U.S. is the run, which is expressed as the multiple of 1,600 yards needed to make 1 pound. The worsted count states the number of 560-yard hanks in 1 pound. Linen is measured by 300-yard leas in 1 pound, cotton 840-yard hanks in 1 pound-in England. On the Continent, cotton is gauged by the number of 1,000-meter hanks in a kilogram; this system is obviously no earlier than the late eighteenth century. With these systems, as with wire, the smaller the number, the thicker the yarn. In 1956, ASTM established the metric tex system, intended for all these fibers, which gives the weight of a specific length of yarn; 1 tex is 1 g/km.
Yarns straight from the spinning are called singles; except for some spun from line flax, they are not strong enough to be stretched over the loom as warp. Singles are plied (British: folded; industry: doubled): two or more singles are spun together, in the opposite direction from the original spin. That is, Z-spun woolen, worsted, and hemp are S-plied, like the yarn and strands of plain-laid rope; S-spun linen is Z-plied, like the yarn and strands of reverse-laid rope. (Spun yarns ply naturally in the direction opposite to the spin.) To ply singles, the spinster transfers the hanks of singles back to bobbins, sets the bobbins in a frame that permits them to spin easily, and uses her spinning wheel to spin the singles together, turning the wheel the opposite direction from that used for spinning those singles. Plying more than four together is difficult; each single is most easily controlled by being pa.s.sed individually between two of her fingers.
Once plied, the gauge of the yarn changes. For plied woolen and worsted yarn, the gauge is now figured on the plied weight, with the number of plies indicated also. That is, four singles of 32s plied together become 4/8s. Plied cotton retains the gauge of the singles, with the number of plies indicated: either 4/32s or 32/4.
Plied yarns are wound into hanks, for measuring, quality inspection, and their transfer to bleachers and
dyers.Silk. Reeled silk is already a long string; unlike the shorter fibers, it does not need spinning to become one. However, reeled silk is not round in cross-section. Twisting the strand will round it, but the strand is many yards long (up-time, 10,000 yards). This twisting is called not spinning, but throwing.
After the hank of silk has been graded and lightly washed, it is placed on a swift, a rotating device that will hold the hank spread out, from which it is wound onto a bobbin. Up-time, it is wound from that bobbin onto another, being cleaned by its pa.s.sage through a double knife-cleaning removes b.u.mpy imperfections. Finally, it is thrown by being transferred from that last bobbin to another, with the two bobbins set at right angles to each other, and the silk going through a flyer set atop the source bobbin. The amount of twist, which varies according to the intended use of the silk, is set by the speeds of the bobbins. In Italy, throwing machines are water-powered, and the receiving bobbins oscillate so that the silk is wound evenly on them.
Down-time, the Italian silk workers are jealous of their methods, which have been little changed for about two centuries (Ponting 3). Italian machine-throwing methods were unknown elsewhere until 1717, when John Lombe, working in an Italian filature, made drawings of the machines and smuggled them to his family in Derby, England (Hooper 46). However, silk throwing without these Italian machines is known in seventeenth-century England; the Livery Company of Silk Throwsters was founded in 1629 and the Company of Silkmen in 1631 (Hooper 112). While books of silk, packages of hanks, are being exported to England, they may well be still unknown in Thuringia.
The thrown silk is then plied, onto another bobbin, which must be stopped immediately if one of the threads breaks or otherwise fails. This plied silk then goes through the throwing process, being twisted in the opposite direction to that in which the individual threads of reeled silk were. Finally, it is wound from the take-up bobbin into a hank.
The gauge of thrown silk varied from place to place. In nineteenth-century Italy and France, it was the weight in grams of a certain length of silk-450 to 500 meters, but a different length in every city-divided by an inconstant constant-different in every city. In nineteenth-century England, the gauge was expressed as the weight of 1,000 yards, the weight being given in drams (1/16 ounce avoirdupois) or deniers (1/12 of a sou; French for pennyweight). Eventually, the international denier system was agreed upon: the weight in grams of 9,000 meters. However, the tex, grams/kilometer, may also be used for silk. (After its introduction, spun silk was gauged the same way as cotton.) Bleaching, Dyeing, and Mercerizing. Before it can be dyed, or woven, yarn of any fiber must be washed to remove oil, wax, and dirt. Wool is scoured; this term does not imply the application of elbow grease, but the removal of all grease and oil, both natural yolk and added olive oil. Linen and cotton are washed; flax contains so much stiffening wax that the weight of a lea of linen yarn may be reduced as much as a quarter. Cotton must be freed of the simple dirt acquired in its processing. Silk, too, gets a gentle wash.
If the yarn is to be dyed a pale color, or is to show as white when woven in combination with yarn of another color, it must be bleached, as its natural color is either yellow or gray. Up-time knowledge of bleaching chemistry, even the small amount acquired in an introductory chemistry course, will be helpful to down-timer bleachers. Up-timers can provide different ways to apply sulfur to wool-not the "black" wool, which can be brown, gray, or black, and is not bleached-to turn it from creamy white to white, and knowledge of hypochlorites for linen and cotton-of which the active element is oxygen, not chlorine (Hartsuch). Bleaching of silk is accomplished by boiling off-the color is in the sericin, and boiling the hanks removes much of the sericin. Linen intended as white goods may be bleached after it is woven, in the piece instead of in the yarn.
Most yarn is dyed before it is woven into cloth; much fabric design depends on the use of different colors of yarn. One thing to consider: "Aniline dyes . . . are not worthy to be used on silk"-silk should be dyed with alizarine dyes, which are closer to the natural dyes (Hooper 49).
About 1850, John Mercer discovered that exposing cotton yarn to alkali made the fibers shorter and thicker, increasing their strength and their tendency to accept dye. However, mercerizing was not accepted by the cloth trades until the 1890s, when Horace Lowe discovered that holding the yarn under tension during treatment made it l.u.s.trous too (Hartsuch 189190). The increase in strength is not great; in the 1960s, mercerized sewing thread was easily broken between the fists, and cotton fabrics for homemade summer dresses were not cut from the bolt, but torn. However, longer-fiber cottons are easier to mercerize than short-fiber ones, and the cotton available down-time is the shortest-fiber species.
Tools and machines. Up-timers could invent several small tools that would benefit spinsters and dyers. If the up-timers notice all the hand-winding from bobbin to niddy-noddy and onto bobbins again, the mechanically inclined could make bobbin winders and ball winders very easily-just a little cam and gear work. To replace the niddy-noddy, the swift is needed: a rotating frame, with a vertical axis, clamped to a table or standing on the floor, of known circ.u.mference, that yarn can be wound on to or off of. Primitive swifts were in use at least by 1657 (Velazquez, Las Hilanderas), but an up-timer might invent the umbrella swift, which can be adjusted to different circ.u.mferences, and collapsed to make removing the hank easy, ahead of its time.
In OTL, all the machines designed for spinning many yarns at once were designed with cotton in mind-American Upland cotton, G. hirsutum, with lint averaging about an inch instead of Indian cotton"s five-eighths inch (EB14d 226). These machines were later modified to accommodate the lengths of wool and, much later, flax.
The spinning jenny produced very poor yarn, weak and slubby, which broke often during the spinning, and is suitable only for weft. The jenny replaced the spinster"s fingers with the clamp, a piece of wood split lengthways, through which the cotton was drawn from the slubbing bobbins. The drive wheel was turned by hand so that the spindles rotated, twisting the drafted fibers. The deflection wire was moved by foot to change the angle of the yarn and the clamp was moved by hand toward the spindles so that the yarn was wound onto the spindles. The operator balanced on one foot to work this machine.
For strong, smooth cotton threads suitable for warp, hand-spinning continued for some years. As late as the second decade of the nineteenth century, while the low wheel had been introduced to England, the version used for cotton still had no treadle. Spinsters sat, but still had to spin the drive wheel manually, faster than required for the great wheel (Aspin 45).
Another item to note is that the spinning jenny cannot be operated with a supply of individual slubs. A number of slubs must be joined, end to end, and twisted slightly so that they will stay together; this roving is then wound onto one of the slubbing bobbins.
However, poor as the spinning jenny was, adapted versions of it, some powered, were used for wool well into the twentieth century. Other machines, invented during the next sixty years (the water frame, the mule, the billy, and more), worked differently, some using rollers and others retaining the clamp. The up-time mechanisms that replaced the spindle, flyers, cap spindles, throstles, and ring frames, are nineteenth-century inventions (EB14j 35; Barker 12). Different mechanisms are suitable for different fibers and twist those fibers more or less tightly. Good machining is a necessity; up-time machines work well only at high RPMs (Barker 16).
Up-time spinning mills are filled with machines, a sequence of about a dozen taking the farm-fresh fibers through every operation to finished plied yarn. While there are some sketches of principles in the encyclopedias, there are no detailed drawings, and no examples in Grantville. The reinvention of mechanized spinning will be a substantial engineering exercise.
Weaving.
Textiles are made by interlacing yarns at right angles; at its simplest, many yarns several yards in length are laid side by side (the warp), and another length of yarn (the weft) crosses the warp, following a path over and under alternate yarns, and then back again, reversing the under and over. A loom is a machine designed to facilitate this process, by holding the warp yarns in place, in order, and straight, and then separating the warp yarns into two banks; between the banks is the shed through which a shuttle may carry the weft-effectively, under and over the warp threads. The two banks then exchange places, creating the countershed.
The physical loom. In seventeenth-century Europe, the horizontal frame loom is standard. Horizontal means that the warp is parallel to the ground, not hanging vertically; frame means that the warp is surrounded by beams and rails, not pegged out on the ground. Warp threads are stretched between the back beam and the breast beam, both solid, fixed lengths of wood. Both the warp beam, below the back beam, and the cloth beam, below and set back from the breast beam (knee room), turn to let off the warp and take up the cloth. The warp and cloth beams can be braked at many points in their rotations in order to maintain the proper tension of the warp threads between them. Between the back and breast beams is the castle, two uprights capped with a lintel, from which depends the mechanism for opening the sheds; this mechanism will be described below. Between the castle and the breast beam is the beater, two heavy lengths of wood hung vertically from above, holding the reed between the lower ends. The reed, extending across the loom, is strips of reed, set vertically and edge-forward, between two laths. The beater, also called the batten, is swung by the weaver after every shot of weft to press that weft thread against the growing end, the fell, of the cloth.
The basic shedding mechanism permits warp threads to be lowered or raised in groups. Each warp thread is controlled by a heddle (British: heald), a length of string that has at its middle an eye, tied in the string itself, or a mail, a bronze ring held by the string, which the warp threads pa.s.s through. Many heddles are held by each harness (British: shaft), a wooden rectangular frame wider than a warp can be, with the heddles fastened to the top and bottom rails. Two pulleys hang from the top of the castle, one near each side, and a pair of harnesses depends from these pulleys. In the simplest threading pattern, the draft, the warp threads alternate between harnesses, each thread pa.s.sing alone through one heddle-except that, at the outside edges of the warp, two or three threads will be doubled, each of the first two or three heddles will hold a pair of threads, for the selvage, which forms a stronger edge on the cloth. Each harness is tied to a treadle, through intermediate lamms, paired laths each half the width of the loom, to even the pull across the width. The warp and the harnesses must be balanced to keep the loom operating easily and efficiently. Down-time, this standard seventeenth-century shedding mechanism has been in use for about a millennium. Up-time, it is known as counterbalance (a retro weaving term made necessary by the nineteenth- and twentieth-century inventions of the jack and the countermarche); when one treadle is depressed by the weaver, that harness is pulled down and the harness hanging from the same pair of pulleys goes up.
Warping. Hanks of yarn delivered to a weaver become the warp. The yarn will be wound onto hollow bobbins, so that it can be controlled easily, and the bobbins will be placed on pegs upon which they can turn easily, in a bobbin frame. Measuring out the length of each warp thread while keeping the threads from tangling, warping, is an easy task. If the warp is no more than seven or eight yards, a warping frame is used; for longer warps, the tool is a warping mill (Davenport Weaving 78). The warping frame is two columns of pegs about a yard apart; the yarn is wound back and forth, down the frame over as many pegs as needed to reach the intended length plus loom waste, and then back to the beginning. The warping mill, known down-time, is a large, rotating, vertical cylinder with columns of pegs at intervals; the yarn is spiraled down to the right, between the pegs, while the cylinder is turned, and back up while the cylinder is turned the other direction. At the beginning of either frame or mill are two subsidiary pegs between which the yarn going down follows one path and the yarn going up follows the opposite path, creating an "X" that keeps the warp threads in order while they are transferred to the loom. While a hobby weaver using heavy yarn may warp one thread at a time, professional weavers working with fine yarns may feed from as many as 12 bobbins at once. The X is preserved by a tie as soon as the entire warp has been measured out. Now the warp is ready for dressing the loom.
Dressing the loom. The warp is removed from the frame or mill starting with the bottom loop: the warp is tied loosely in a chain sinnet (Ashley #2868) or crochet chain as it is removed from the pegs, and then carried to the loom. The tie around the X is replaced by two leashes, wooden slats that fit between the rails but are a little longer than the warp beam; these leashes are tied together at their ends so that the warp may be spread without the threads escaping. The beginning end of the warp is then secured to the warp beam; a metal rod is put through the loop and tied to the rod that is held at the end of the ap.r.o.n (a length of cloth attached to the beam). With the warp threads pa.s.sing over the back beam and held under tension, and the two leashes being pulled forward to move the X toward the other end, the warp beam is turned to wrap the warp onto it. More leashes are positioned every few inches around the warp beam so that the warp threads do not bury themselves in earlier layers (modern hobby weavers often use brown paper, wound along with the warp, instead). The warp is wound until only enough length is left free to finish the dressing.
The free, forward end of the warp is cut and each thread is pa.s.sed through the shedding mechanism in the castle-between the heddles in the harnesses behind and before the harness holding the heddle for that thread-then the reed is sleyed-the warp threads are pa.s.sed through the dents, the s.p.a.ces between the reeds. These operations are best performed by a two-person team, one behind the castle presenting the warp threads in order, and one in front pulling the threads through with a hook.
Last, the warp is fastened to the cloth beam, tied to a rod that is secured to that cloth beam. The tension of the warp threads is checked, by patting with a hand, and corrected by retying wherever needed. The two looms in the Grantville museum are of this type, except that they are of twentieth-century manufacture: the reed is of steel and the heddles in one are of aluminum instead of string. These two looms also have rollers, long wooden poles, taking the place of the pulleys, and the beaters are standing, pivoted at the bottom where they are permanently fastened to the base of the loom, instead of pendant. The shuttles on display with these two looms are rag shuttles, designed to hold torn strips of cloth to be woven over a coa.r.s.e cotton or linen warp in making rag rugs.
Types of weave and bigger looms. Two harnesses are sufficient for the simplest "over one, under one" weave, which is called tabby, and for the tabby variation called basket weave, with the shots of weft in pairs. More complex weave patterns require more harnesses. For example, for the weft to go over two and under two, with each shot offset one warp thread from the last (basic twill), four harnesses are needed. The second pair of harnesses will hang from their own pulleys, and the four primary pulleys (or horses, strips of wood hung by their centers with the harnesses tied to their ends) will hang from the secondary pulleys, so that any three of the four harnesses can be pulled down at once. (As long as the number of harnesses is a power of two, all but one harness can be treadled down at the same time.) For the simplest twill, the arrangement of the warp threads through the harnesses, the draft, is: first harness, second harness, third, fourth, repeat, and the treadling is first and second, second and third, third and fourth, fourth and first, repeat. Variations of twill are produced by changing either the threading order or the treadling or the number of harnesses used. Denim is over one, under two-from the right side of the fabric, which faces the floor as it is being woven on a counterbalance loom, so that the weaver sees under one and over two. The draft for denim is first harness, second harness, third, repeat, and the treadling will be all but first, all but second, all but third, repeat. Careful choice of drafts and treadling patterns produces more variations of twill, like the herringbone and the pointed (diamond, etc.) weaves. Every fiber can be woven in tabby or twill.
In satin weave-or rather, its reverse, sateen-the weft floats over more warp threads, requiring yet more harnesses. A total of eight, two groups of four depending from a third level of pulleys, is sufficient. For five-shaft (or harness) satin, the weaver treadles for over four, under one, offset two; for eight-shaft satin, over seven, under one, offset three. Turned right-side up, satin shows longer expanses of exposed, floating warp threads. It is a more fragile fabric, more subject to pulls, and this weave is not used for any fabric subject to hard use or provided to the poor.
Damask, fabric with designs-geometric figures, animals, plants-produced by floating warp threads within the design element over weft threads, requires looms with shedding mechanisms that can produce many more sheds.
Draw loom. The draw loom has harnesses only for the binder (or ground) weave, which was usually satin; it secured each warp thread more often than the pattern called for. Each warp thread pa.s.ses through one mail in the pattern and one in the binder. As the pattern shed opened behind the binder harnesses, and the shuttle was thrown in front of them, the heddles in these harnesses had long mails, elliptical instead of round, so that the shed extended through them.
For the pattern shed, each heddle hangs free, with a weight, a coil of lead wire called a lingoe, hanging from it to pull it down. The cord above the mail is called the first leash, which rises through the comber board. The comber board is as long as the warp is wide, and consists of slips, thin pieces of wood, as many as there are repeats of the pattern across the cloth, each slip having a rectangular arrangement of holes equal in number to the number of warp threads in the pattern. The first leash for the pattern goes through the first hole in the appropriate slip (and its terminology changes to necking cord), the second through the second, and so on. The comber board forms the bottom of the necking box, in which all the cords through the first hole of all the slips are tied to a pulley cord. Each pulley cord goes through the appropriate hole in the top board, a single slip, and leaves the necking box by way of a pulley, becoming a tailcord as it goes horizontally to the side. The end of each tailcord is fastened to the far end of a beam extending from the top of the loom. Another cord is tied around the standing part of each tailcord; these simple cords are fastened to the floor directly below, with no slack in them. If, for example, there are four pattern repeats across 1,000 warp threads, there are only 250 simple cords. Following the pattern draft, the weaver ties lashes around the standing part of the simple cords, a set for each row of the pattern; if several adjacent warp threads are to be raised at the same time, one lash can serve the adjacent
simple cords.In weaving, the weaver"s feet control the sheds for the binder weave. The pattern sheds are provided by a drawboy seated on the ground who pulls the lashes according to the pattern.