Basket cloth is still another material which could properly be included with the buckrams. This grade of cloth gains its name from the fact that the threads are woven in squares resembling a basket mesh. They are made in the same coloring as the linen cloths.
In describing the cloths above, only those of American manufacture have been considered. There are English cloths which correspond to nearly all of these fabrics, but they are little used in America on account of the delay in importing them and because of the duty, which makes the price here higher than for corresponding grades of domestic manufacture.
One cannot stand before the windows of the large book stores at holiday time without being impressed by the possibilities offered by the many colors and patterns of cloths and the varied hues of inks and foil, in helping the artist to make books attractive to the eye, and suggestive of the sentiment and motive of their contents. One feels that the designer of book covers has surely a wider field to-day than when he confined his attention entirely to making intricate designs for single leather-bound folios.
BOOK LEATHERS
By Ellery C. Bartlett.
There is hardly any part of the world that has not been drawn upon for suitable skins to be made into leather for bookbinding. The skins generally used are goat, seal, pigskin, cowhide, calf, and sheep, and they vary in quality according to the country they come from and the manner in which the animals are cared for, the stall-fed animals, or those that are protected from storm and have regular food, producing the best skins.
In preparing these skins for bookbinders, great care has to be taken to extract as much of the natural oil as possible, as this is apt to discolor the gold leaf decorations put on by the artistic binder.
Tanners usually buy skins with the hair on. They are first put into water, for the purpose of softening them, after which they are laid over a beam and a knife is drawn over them, to still further soften them. They are then put into vats containing slack lime-water, which loosens the hair and kills the animal life remaining in the skin.
After having been in these vats for a period of about ten days, they are washed in water, to remove the lime and clean the skin. Afterwards they are put through a process called "bating," which destroys any animal matter in the skins which may have escaped the first process, and they are then finally cleansed by a solution of bran and water, which also prepares them for tanning.
After the skins have been in tan for a week or more, they are taken out, tacked on drying frames and all the wrinkles stretched out of them. When thoroughly dry, they are ready for the coloring process.
After being colored, they are again tacked on the frames; and when they are thoroughly dry again they are taken to the graining room, where the finishing processes are done by skilled workmen, the utmost care being needed to produce the desired result.
The matching of shades is a very difficult process, as the question of color must be decided while the skins are still wet. Weather conditions have a very important bearing on the manufacture of leather, and changes in the atmosphere often spoil all the careful work that has previously been put on a skin.
The finest leather for books comes from France, although a good quality is made in England and Germany, and the United States is rapidly improving its output.
The graining of the leather to bring out the natural grain in the skin, is done by hand and sometimes by electroplate reproductions of the natural grain by means of the embossing press. When large grain is wanted, the skins are shaved only slightly on the back; if small grains are wanted, the skins are shaved thinner. This process removes all roughness from the back of the skin, leaving it smooth and clean.
Formerly the binder, in preparing his covers, was compelled to pare the edges with a knife, which was a slow and laborious process; but now--thanks to the inventive American talent--he can have the whole skin split to any desired thickness or thinness, without injury; or, he can have the edges pared by cleverly devised machinery.
Leather manufacturers are able, by using splitting machines, to split skins so that both parts of a skin can be used--the upper part of the skin being called the grain and the lower the flesh. Were this not the case, it would be impossible for the binder to supply the needs of his customers, as the output does not keep pace with the constantly increasing demand. In fact, binders are constantly looking for subst.i.tutes, but, after all, there is nothing so good as leather.
THE BINDING
By Jesse Fellowes Tapley.
The changes in the methods of bookbinding during the last sixty years have been very great, and during the last twenty-five years the invention of machines for doing the work rapidly has created almost a revolution in the art.
Fifty years ago the pay of journeymen bookbinders ranged from eight to ten dollars a week, for a day of ten hours, and the cost of binding an ordinary 12mo volume of 500 pages in cloth was from sixteen to eighteen cents. To-day the same volume can be bound for eight to ten cents, with the pay of the journeyman from eighteen to twenty dollars a week, for a day of nine hours. The pay of girls has, as a general thing, been proportionally increased, while the amount of work they can turn out with the newly invented machinery is triple as much as could be done by hand, and on some branches of the work it is more than six times as much.
The first process of making a book is the folding. The sheets are usually printed so as to fold in sections of sixteen pages, with signature figures, as 1, 2, 3, or alphabet letters, as A, B, C, printed at the bottom of the first page of each section, for the guidance of the binder in placing the signatures in regular order for gathering the book.
Usually two or four forms are printed on one sheet. One girl could fold by hand from 3500 to 4000 sections of 16 pages a day. With modern machines the range is from 17,000 to 48,000, according to the make of the machine and whether it is equipped with an automatic feeder or not.
There are three styles of machines in general use. The point machine, fed by hand, has needle points on the feed board, on which is placed the sheet, which has proper holes made by the printing press. The next is called a drop-roll machine, which, if equipped with an automatic feeder, will fold 24,000 sections a day, delivering two sections at each revolution. The next is called a quadruple machine, which, with an automatic feeder, will fold 48,000 sections a day or as many as twelve girls could do by hand.
In binderies where large editions of books are done, it would be almost impossible to keep the different sections from getting mixed, unless they were put into compact bundles and tied up until the complete book is folded. This is accomplished by putting a quant.i.ty of each section into hydraulic or screw presses, with a board at the top and bottom of the bundle, which is tied with a strong cord. They are then marked with name and signature, and piled up until wanted for gathering into books.
If the book has plates printed separately from the text, they have to be inserted before it can be gathered. Plating is done by girls, 5000 being a day"s work for an experienced hand.
Gathering comes next. The sections are laid out in separate piles in consecutive order, and one signature taken from each pile, making a complete book. From 30,000 to 45,000 sections is a day"s work.
After gathering, the book is pressed to make it solid. This is done by pa.s.sing it through a powerful press, called a smashing machine. The old-fashioned way was to pile the books between boards in a standing press, running the screw down with an iron lever, and allowing them to stay in same for several hours. In a modern smashing machine a book can be made as solid in half a minute as the standing press will make it by ten hours" pressing.
From the smashing machine it goes to the collator, by whom it is examined to see if any signature is misplaced or left out.
It then goes to the modern sewing machine. This is one of the most valuable labor-saving machines for the binder ever invented, as it almost, if not entirely, supersedes hand sewing on what is called edition work. This machine will sew from 15,000 to 18,000 signatures a day, and do it better than it can be done by hand. Each signature is sewed independently and with from two to five st.i.tches, so that if one breaks the signature is held fast by the others, while in hand sewing the thread goes through the whole length of the signature, and if by chance it is broken, the book is ruined so far as the sewing is concerned. In addition the machine does more work, in the same time, than five or six girls sewing by hand.
After sewing, the books are prepared for tr.i.m.m.i.n.g by "jogging up" in bunches of the proper thickness, for the cutting machine. If the work is large or the paper highly sized and slippery, a light coating of glue is applied to the centre of the back, to keep the signatures in place. In olden times books were trimmed in a press having hardwood jaws and wood screws near each end, worked with an iron lever. Into this press the books were clamped, the rough edge to be trimmed off projecting above the jaws. To trim the book, a plough was used, made of two thick side pieces of hard wood about one foot long and six inches high, with a long hand screw pa.s.sing through them. (The end at the right had a handle outside of the side piece, and the end at the left engaged a screw in the left side piece.) At the bottom of the right side piece, and resting on the jaw of the press, was a sharp-pointed knife. The plough was worked back and forth, and at each motion the screw in the plough was turned enough for the knife to take a shaving from the book. To keep the plough in place, the left-hand jaw had a deep groove on its surface, in which the plough worked. This was slow and hard work.
Sometime between the years 1840 and 1850, a machine was invented in which books were clamped, and a heavy knife descended perpendicularly.
This was an improvement on the old-fashioned press and plough, but it was found that, unless the knife was very sharp, the tendency was to draw the paper, and in effect jam it off rather than cut it.
To obviate this, the next move was to arrange the knife so that it would give a drawing cut, or come down on a slant, rather than a rigid descent. This is the principle on which most book and paper cutting machines are made to-day.
About 1850 a machine was invented in which a vibrating knife worked back and forth on the paper to be cut. This was thought at the time to be the best principle for a cutting machine.
Ten or twenty years later a new machine made its appearance. This one had a knife held rigidly in the frame of the machine, and the books were clamped into a carriage drawn up by a chain against the edge of the knife. It was the most rapid trimmer that had appeared, and held its position for a good many years; but in the meantime, for general work, the machines with a descending slanting knife held their own and multiplied.
Within a very short time a new machine has appeared. This has two slanting descending knives and doubles the work of the older machines, as it cuts two sides at one blow, and will trim from 7000 to 8000 ordinary books a day, against 500 or 600 by the old-fashioned press and plough.
After the edges are trimmed, the book is rounded and backed. In this process, too, great improvement has been made. Originally this work was done by hand with a hammer, the rounding being accomplished by striking one side of the back as the book lay flat, and then the other, forming it at the same time by the hand, to give the back the convex, and the front the concave, form. Some persons are found now who think the hollow or concave front of the book is made by tr.i.m.m.i.n.g it in that way.
The backing process gives the groove on which the cover is hinged. In olden times this was done by clamping the book in a press between backing irons, with the back projecting enough to give the proper groove, and gradually drawing it over from the centre with the hammer.
In small job shops this is the practice to-day, but in large establishments it has given place to modern machines. The first innovation was what is called the roller backer. This makes the groove, the book being first rounded as described. Then came the rounder and backer, which is run by power, and both rounds and backs the book at one operation.
To show the advance made, it may be stated that 500 books was a good day"s work with press and hammer. With the advent of the roller backer 1000 was a fair day"s work, but when the power machine was invented, the production jumped up to 4000 and over, a day.
After the book is rounded and grooved, the back is glued and a piece of coa.r.s.e woven cloth, wide enough to lap over each side an inch or more, is put on, and over this another coat of glue and a piece of paper the width of the back are applied.
The book is then ready for the cover, which is put on by pasting the first and last leaf, drawing the cover on, and putting it in press between boards whose edges are bound with a bra.s.s band, the rim projecting above the surface of the board. This rim presses the cloth between the covers and the back of the book, making a hinge upon which the cover opens. Two men can paste and press 1500 to 2000 books a day.
A new machine has been put on the market within a year, that, with the same help, will do the work at the rate of 4000 a day. This process is termed "casing in."
The making of the book cover is a distinct branch in binding edition work. The pasteboard formerly was cut by hand shears, one piece at a time. It is now done by rotary shears, cutting from six to ten pieces as fast as the sheets of board can be fed to the machine.
The cloth for the cover is cut to the proper size, glued by hand, the boards laid on by gauge, and the edges turned in with a folder. A man expert at the work can make from 600 to 800 covers a day. About fifteen years ago a machine was invented, which turns out from 3000 to 4500 a day. This machine is automatic in its operation, gluing the cloth, laying on the boards, turning in the edges, and delivering a more perfect cover than can be made by hand.
Stamping the cover is a trade by itself. It requires long experience and skill to make an expert. There are several branches in this trade, such as blank or blind stamping, stamping with ink (or a colored leaf made to take the place of ink), and stamping with gold. Laying gold preparatory to stamping is a distinct branch, and is done by girls.
This is such a delicate operation that it requires long experience.
There has been no improvement in the principle of the stamping or embossing press since the first machines came into use. The die or stamp is held in the head of the press by clamps, and the cover is placed on the platen or bed of the press, which is raised up to the stamp by a "toggle joint" operated with a "cam."
Since covers began to be ornamented with ink, attachments have been added to the presses for inking the stamps. There have also been invented powerful printing presses, made for stamping covers in ink.
The process is the same as on common printing presses.