RICHARD TREVITHICK
Born in Illogan, in the west of Cornwall, England, April 13, 1771. Died in Dartford, Kent, April 22, 1833.
Richard Trevithick had meager educational advantages. His father was manager of the Dolcoath and other mines, and shortly after the birth of his son moved to Penponds, near Camborne, where the boy was sent to school to learn reading, writing and arithmetic, which were the limits of his attainments. Early in life he showed the dawning of remarkable inventive genius, was quick at figures and clever in drawing. He developed into a young man of notable physique, being six feet two inches high, and having the frame and the strength of an athlete. He was one of the most powerful wrestlers in the west country, and it is related of him that he could easily lift a thousand-weight mandril.
At the age of eighteen young Trevithick began to a.s.sist his father as mine manager, and at once proceeded to put his inventive faculty to practical test. His initial success, in 1795, was an improvement upon an engine at the Wheal Treasury mine, which accomplished a great saving in fuel and in power, and won for him his first royalty. Before his father died, in 1797, he had attained to the position of engineer at the Ding Dong mine, near Penzance, and had already set up at the Herland mine the engine built by William Bull, with improvements of his own. His earliest invention of importance was in 1797, when he made an improved plunger pump, which, in the following year, he developed into a double-acting water-pressure engine. One of these engines, set up in 1804, at the Alport mine, in Derbyshire, was run until 1850.
[Ill.u.s.tration: RICHARD TREVITHICK]
In 1780 he built a double-acting high-pressure engine with a crank, for Cook"s Kitchen mine. This was known as the Puffer, from the noise that it made, and it soon came into general use in Cornwall and South Wales, a successful rival of the low-pressure steam vacuum engine of Watt.
As early as 1796 Trevithick began to give attention to the subject of steam locomotion, and a model constructed by him before 1800 is now in the South Kensington Museum. He busied himself in designing and building a steam vehicle to travel upon the common highways. The work was done in a workshop at Camborne, and some of it in the shop of Captain Andrew Vivian.
It was Christmas Eve of 1801 when this steam locomotive was completed and was brought out for trial.
The following account of the first trial was made by one who was present: "I knew Captain d.i.c.k Trevithick very well. I was a cooper by trade, and when Trevithick was making his steam carriage I used to go every day into John Tyack"s shop at the Weith, close by here, where they put her together. In the year 1801, upon Christmas Eve, towards night, Trevithick got up steam, out on the high road, just outside the shop. When we saw that Trevithick was going to turn on steam, we jumped up, as many as could, maybe seven or eight of us. "Twas a stiffish hill going up to Camborne Beacon, but she went off like a little bird. When she had gone about a quarter of a mile there was a rough piece of road covered with loose stones. She didn"t go quite so fast, and as it was a flood of rain, and we were very much squeezed together, I jumped off. She was going faster than I could walk, and went up the hill about half a mile further, when they turned her and came back again to the shop." The next day the engine steamed to Captain Vivian"s house, and a few days subsequently, Trevithick and Vivian started off for Tehidy House, where Lord Dedunstanville lived, some two or three miles from Camborne. On this journey they met with an accident, the engine being overturned in going around a curve; but they got back safely.
This carriage presented the appearance of an ordinary stage coach on four wheels. The engine had one horizontal cylinder which, together with the boiler and the furnace-box, was placed in the rear of the hind axle.
The-motion of the piston was transmitted to a separate crank-axle, from which, through the medium of spur-gear, the axle of the driving-wheel, which was mounted with a fly-wheel, derived its motion. The steam c.o.c.ks and the force-pump, as also the bellows used for the purpose of quickening combustion in the furnace, were worked off the same crank axle. This was one of the first successful high-pressure engines constructed on the principle of moving a piston by the elasticity of steam against the pressure only of the outside atmosphere.
In the following year Trevithick went to London with his cousin, Andrew Vivian, and secured a patent. Early in 1803 he made his second steam carriage. This was built at Camborne and taken to London, via Plymouth, for exhibition. Its journey along the highways thoroughly alarmed the country people. Coleridge relates that a toll-gate keeper was so frightened at the appearance of the sputtering, smoke-spitting thing of fearsome mien that, trembling in every limb and with teeth chattering, he threw aside the toll-gate with the scared exclamation, "No--noth--nothing to pay. My de--dear Mr. Devil, do drive on as fast as you can. Nothing to pay!"
The engine in this carriage had a cylinder five and one-half inches in diameter, with a stroke of two and one-half feet, and with thirty pounds of steam it worked five strokes per minute. In every way it was superior to its predecessor. It was not so heavy; and the horizontal cylinder, instead of the vertical, added very much to its steadiness of motion; while wheels of a larger diameter enabled it the more easily to pa.s.s over rough roads which had brought the Camborne one to a standstill. The boiler was made entirely of wrought iron, and the cylinder was inserted horizontally, close behind the driving axle. A forked piston-rod was used, the ends working in guides, so that the crank axle might be brought near to the cylinder. Spur gearing and couplings were used on each side of the carriage for communicating motion from the crank shaft to the main driving axle. The driving-wheels were about ten feet diameter, and made of wood.
The framing was of wrought iron. The coach was intended to seat eight or ten persons, and the greater part of the weight came on the driving axle.
The coach was suspended upon springs.
The London steam carriage was put together at Felton"s carriage shop, in Leather Lane, and after its completion, Vivian one day ran the locomotive from Leather Lane, Gray"s Inn Lane, on to Lords" Cricket Ground, to Paddington, and home again by way of Islington, a journey of ten miles through the streets of London. Several trips were made in Tottenham Court Road and Euston Square, and only once did they meet with accident.
Finally, however, the frame of the carriage got twisted, and the engine was detached and set to driving a mill.
Trevithick"s next experiment was made in 1803-4, while he was engineer of the Pen-y-darran iron works, near Merthyr Tydvil, where he built and ran on a railway a locomotive that was fairly successful. In 1808 he built a locomotive for a circular railway or steam circus that he and Andrew Vivian set up in London, near Euston Square. This ran for several weeks, carrying pa.s.sengers at the rate of twelve or fifteen miles an hour around curves of fifty or one hundred feet radius. One day a rail broke and the engine was overturned, which ended the exhibition.
Subsequently, Trevithick applied his high-pressure engine to rock-boring and breaking, and dredging. He laid out a system of dredging the Thames River, planned a tunnel under the Thames, invented a high-pressure steam threshing engine in 1812, constructed iron tanks and buoys, and modeled an iron ship. He was one of the first to conceive the practical use of steam in agriculture, declaring that the use of the steam engine for this purpose would "double the population of the kingdom and make our markets the cheapest in the world."
In 1814, Trevithick became interested in a plan to work the silver mines of Peru by Cornish methods, and nine of his high-pressure engines were sent to South America in charge of Henry Vivian and other engineers. He himself followed in 1816, and remained in that country ten years, making and losing several fortunes during that time. Finally, in a revolution, the mining plants were destroyed, and he was forced to leave the country, penniless. For a time he was prospecting in Costa Rica, where he planned a railroad across the Isthmus from the Atlantic to the Pacific. In 1827 he returned to England, still a poor man, and settling in Dartford, Kent, devoted himself to new inventions, unsuccessfully endeavoring to secure the help of the government in his work. His later years were spent in poverty, and when he died, the expense of his burial was borne by his fellow-workmen of Dartford.
Undoubtedly, Trevithick was one of the foremost English engineers of his day, a period that was rich with strong men of distinction in his profession. By many he has been considered as having contributed more even than James Watt to the development of the steam engine and its broader adaptation to practical uses. In his early years he was restrained in putting his ideas and experiments to practical test by the restrictions of Watt"s patents. Finally when that difficulty was removed he at once took a leading position in his profession. Especially in the development of the high pressure engine he is ent.i.tled to at least as much credit as any man of his day. His genius was fully recognized in his generation and his impoverished old age was the result of financial reverses in business operations and not from the lack of substantial rewards for his inventive achievements.
DAVID GORDON
The first experiments of David Gordon, who in 1819 was working with William Murdock, in Soho, were for the purpose of using compressed air for common road locomotives. He also invented a portable gas apparatus, and originated a society of gentlemen, with the intention of forming a company for the purpose of running a mail coach and other carriages by means of a high-pressure engine, or of a gas vacuum or pneumatic engine, supplied with portable gas. Alexander Gordon, his son, states that "the committee of the society had only a limited sum at their disposal, nor were there to be more funds until a carriage had been propelled for a considerable distance at the rate of ten miles an hour." David Gordon then tried to prevail upon the committee to make use of a steam engine, but evidently without success.
In 1821 he took out a patent for improvements in wheel carriages, and his locomotive is fully described in the interesting Treatise on Elemental Locomotion, by Mr. Alexander Gordon. The machine consisted of a large hollow cylinder about nine feet in diameter and five long, having its internal circ.u.mference provided with a continuous series of cogged teeth, into which were made to work the cogged running wheels of a locomotive steam engine, similar to that of Trevithick. The steam power being communicated to the wheels of the carriage, caused them to revolve, and to climb up the internal rack of the large cylinder. The center of gravity of the engine being thus constantly made to change its position, and to throw its chief weight on the forward side of the axis of the cylinder, the latter was compelled to roll forward, propelling the vehicle before it, and whatever train might be added.
Gordon"s next attempt to construct locomotive carriages for the common road was in 1824. The means proposed was a modification of the method invented by William Brunton. But instead of the propellers being operated upon by the alternating motion of the piston-rod, as in Brunton"s vehicle, Gordon contrived to give them a continuous rotatory action and to apply the force of the engines in a more direct manner. The carriage ran upon three wheels, one in the front to steer by, and two behind to bear the chief weight. Each of the wheels had a separate axle, the ends of which had their bearings upon parallel bars, the wheels rolling in a perpendicular position. This arrangement, by avoiding the usual cross-axle, afforded an increased uninterrupted s.p.a.ce in the body of the vehicle.
In the fore part of the carriage were placed the steam engines, consisting of two bra.s.s cylinders, in a horizontal position, but vibrating upon trunnions. The piston-rods of these engines gave motion to an eight-throw crank, two in the middle for the cylinders, and three on each side, to which were attached the propellers; by the revolution of the crank, these propellers or legs were successively forced outwards, with the feet of each against the ground in a backward direction, and were immediately afterwards lifted from the ground by the revolution of another crank, parallel to the former, and situated at a proper distance from it on the same frame. The propelling-rods were formed of iron gas-tubes, filled with wood, to combine lightness with strength. To the lower ends of these propelling-rods were attached the feet, in the form of segments of circles, and made on their under side like a short and very stiff brush of whalebone, supported by intermixed iron teeth, to take effect in case the whalebone failed. These feet pressed against the ground in regular succession, by a kind of rolling, circular motion, without digging it up.
The guide had the power of lifting these legs off the ground at pleasure, so that in going down hill, when the gravity was sufficient for propulsion, nothing but a brake was put into requisition to r.e.t.a.r.d the motion, if necessary. If the carriage was proceeding upon a level, the lifting of the propellers was equivalent to the subtraction of the power, and soon brought it to a full stop. When making turns in a road the guide had only to lift the propellers on one side of the carriage and allow the others to operate alone, until the curve was traversed.
Gordon got fair results from this locomotive, but the speed was not satisfactory. In his first trials he found the power insufficient. He afterwards fitted one of Gurney"s light boilers in the hinder part of the carriage, though even after this improvement had been added the experiments were disappointing. Gordon was convinced that the application of the power to the wheels was the proper mode of propulsion, and his project was abandoned after six or seven years had been spent in inventing, constructing, and carrying out experiments with four distinct carriages.
WILLIAM HENRY JAMES
Born at Henley, England, March, 1776. Died at Dulwich College Alms House, December 16, 1873.
The father of William Henry James was William James, of Warwickshire, the great railway projector of his time. He was a solicitor in early life, but became wealthy, worked a colliery in South Staffordshire, and in 1815 removed to London, where he had a large land agency business. He became interested in tramways in 1806, and from that date on devoted most of his energies and fortune to projecting railways in the United Kingdom. He had an interest in one of George Stephenson"s patents, made numerous railway surveys, and by many has been considered to have done more than any single individual in laying the foundations of the English railroad system.
William Henry James a.s.sisted his father in his railway surveys in early life, and then began business independently as an engineer, in Birmingham.
He made experiments in steam locomotion on common roads, and took out patents for locomotive steam engines, boilers, driving apparatus, and so on. His patent for a water-tube boiler for road locomotives was secured in 1823, and his first car was built in 1824. This was a twenty-pa.s.senger steam coach. Each rear wheel had a double-cylinder engine, and the pistons were worked at a pressure of two hundred pounds per square inch. Separate engines to each driver gave each wheel an independent motion, so that power and speed might be varied for turning corners, the outer wheel travelling over a much greater s.p.a.ce than the inner wheel. When the front wheels were so placed that the carriage proceeded in a straight line an equal amount of steam was admitted to each pair of cylinders, but when the front wheel was in the lock the engine driving the outer wheel received a greater amount of steam and thus developed more power and traveled faster than the inner wheel. This arrangement was said to be so efficient that the carriage could be made to describe every variety of curve, repeatedly making turns of less than ten feet radius. The whole of the machinery was mounted upon laminated carriage springs. This arrangement caused the engines and their framework to vibrate altogether upon the crank-shaft as a center, at the same time connecting these engines to the boiler by means of hollow axles moving in stuffing boxes. Each engine had two cylinders of small diameter and long stroke; to these separate engines steam was supplied from the boiler by means of the main pipe, which moved through steam-tight stuffing boxes to the slide valve-boxes by small pipes. The locomotive was entirely distinct from the pa.s.senger carriage.
Sir James C. Anderson became a.s.sociated with James, and in 1829 they built another carriage. This weighed nearly three tons, and the first trials were made round a circle of one hundred and sixty feet in diameter. When it was finally ready to be brought out it was loaded with fifteen pa.s.sengers and driven several miles on a rough gravel road across Epping Forest, with a speed varying from twelve to fifteen miles an hour. Steam was supplied by two tubular boilers, each forming a hollow cylinder four feet six inches long. The tubes of which the boilers were composed were common gas pipe, one of which split on one of the trips, thus letting the water out of one of the boilers and extinguishing its fire. Under these circ.u.mstances, with only one boiler in operation, the carriage returned home at the rate of about seven miles an hour, carrying more than twenty pa.s.sengers--at one period, indeed, it is said, a much greater number; showing that sufficient steam could be generated in such a boiler to be equal to the propulsion of between five and six tons weight. In consequence of this demonstration that the most brilliant success was attainable, the proprietors dismantled the carriage and commenced the construction of superior tubular boilers with much stronger tubes.
Shortly after Anderson and James commenced to build another steam carriage, which was ready for use in November, 1829. This engine was not intended to carry pa.s.sengers, but to be employed for drawing carriages behind. Four tubular boilers were used, the total number of tubes being nearly two hundred. These boilers were enclosed in a s.p.a.ce four feet wide, three feet long, and two feet deep. The steam from each boiler was conducted into one main steam pipe one and one-half inches in diameter, and the communication from any one of the boilers could be cut off in case of leakage. Four cylinders, each two and one-quarter inch bore and nine inch stroke, were arranged vertically in the hind part of the locomotive, and two of them acted upon each crank-shaft as before, giving a separate motion to each driving wheel.
The exhaust steam was conducted through two copper tanks for heating the feed water to a high temperature, and thence pa.s.sed to the chimney. The steering-gear consisted of an external pillar containing a vertical shaft, at the upper end of which small bevel-gearing was used, giving motion to the vertical shaft, whose bottom end carried a pinion gearing into a sector attached to the fore axle. The motion of the crank-shafts was communicated to the separate axles of the driving-wheels by spur-gearing with two speeds.
In experiments made with this carriage, the greatest speed obtained upon a level, on a very indifferent road, was at the rate of fifteen miles an hour, and it never ran more than three or four miles without breaking some of the steam joints. The Mechanic"s Magazine, reporting one of these trials, said: "A series of interesting experiments were made throughout the whole of yesterday with a new steam carriage belonging to Sir James Anderson, Bart., and W. H. James, Esq., on the Vauxhall, Kensington, and Clapham roads, with the view of ascertaining the practical advantages of some perfectly novel apparatus attached to the engines, the results of which were so satisfactory that the proprietors intend immediately establishing several stage coaches on the principle. The writer was favored with a ride during the last experiment, when the machine proceeded from Vauxhall Bridge to the Swan at Clapham, a distance of two and a half miles, which was run at the rate of fifteen miles an hour. From what I had the pleasure of witnessing, I am confident that this carriage is far superior to every other locomotive carriage hitherto brought before the public, and that she will easily perform fifteen miles an hour throughout a long journey. The body of the carriage, if not elegant, is neat, being the figure of a parallelogram. It is a very small and compact machine, and runs upon four wheels."
W. H. James patented another steam carriage in August, 1832. This varied much from his earlier engines in the working parts, and it was not generally considered to be as satisfactory as the others. Sir James Anderson was not able, for pecuniary reasons, to continue to back James in his experimenting, and it does not appear that these plans of 1832 were ever consummated in a completed vehicle.
James was a man of strong mind, an original thinker and thoroughly well-trained by his apprenticeship with his father. He spent a good part of his life in experimenting with common-road steam propulsion, but he had not monetary resources or financial ability commensurate with his mechanical genius. When the support of Anderson was withdrawn from him he seems to have been compelled to give up. Little has been recorded concerning the latter years of his life, and his death in the almshouse sufficiently indicates the poverty in which his last years were spent. His father also sacrificed his life to the cause of railroad advancement, losing his entire fortune and dying a poor man.
GOLDSWORTHY GURNEY
Born at Treator, near Padstow, Cornwall, England, February 14, 1793. Died at Reeds, near Bade, February 28, 1875.
The son of John Gurney, Goldsworthy Gurney received a good elementary education at the Truro Grammar School, and then studied medicine. He settled at Wadebridge as a surgeon, but although very successful, gradually turned his attention to scientific and mechanical investigations. He constructed an organ, studied chemistry and mechanical science, and removing to London in 1820, delivered a series of lectures on heat, electricity and gases at the Surrey Inst.i.tute. His investigations resulted in the invention of the oxy-hydrogen blowpipe, and the discovery of the powerful lime-light known as the Drummond light, and he engaged in other experiments in this field of research.
In 1804, while on a holiday at Camborne, he saw a Trevithick engine on wheels. Recalling this in after years he began experimenting on steam locomotion in 1823, and soon abandoned his surgical and medical practice for this new pursuit. His first efforts were toward the construction of an engine to travel on the common roads. The weight of the steam engines that were then being built seemed to him to offer great objections to their use for this purpose, but he succeeded, with his first machine, in reducing weight from four tons to thirty hundredweight. Then he secured a sufficiency of power by the invention of the high-pressure steam jet. This invention differed from those of Stephenson and Trevithick, who sent their waste steam up through the chimney instead of utilizing it. The Gurney jet was applied to the Stephenson Rocket engine on the Liverpool and Manchester Railway, in October, 1829, and also to steamboats and steam carriages.
In 1823, Gurney made his first experiments with a model steam carriage, on which propellers or feet were used. Two years later, in 1825, he completed a full-size carriage on the same plan, and in May of that year he took out his first patent for this vehicle. The carriage was impelled by these legs being alternately drawn forwards and pressed backwards by a steam engine acting upon them through movable oblong blocks, to which they were attached. As a first experiment this carriage was driven up Windmill Hill, near Kilburn. Another trip, between London and Edgeware, demonstrated the inefficiency of these propellers, and led to the discovery that there was sufficient friction between wheels and the ground to insure propulsion.
In 1826 he constructed a coach about twenty feet long, which would accommodate six inside and fifteen outside pa.s.sengers, besides the engineer. The driving-wheels were five feet diameter, and the leading wheels three feet nine inches diameter. Two propellers were used, which could be put in motion when the carriage was climbing hills. Gurney"s patent boiler was used for supplying steam to the twelve horse-power engine. The total weight of the carriage was about a ton and a half. In front of the coach was a capacious boot, while behind, that which had the appearance of a boot, was the case for the boiler and the furnace, from which it was calculated that no inconvenience would be experienced by the outside pa.s.senger, although in cold weather a certain degree of heat might be obtained, if required. In descending a hill, there was a brake fixed on the hind wheel, to increase the friction; but, independently of this, the guide had the power of lessening the force of the steam to any extent by means of the lever at his right hand, which operated upon the throttle valve, and by which he could stop the action of the steam altogether and effect a counter vacuum in the cylinders. By this means also he regulated the rate of progress on the road. There was another lever by which he could stop the vehicle instantly, and in a moment reverse the motion of the wheels.
This carriage traveled up Highgate Hill to Edgeware, and also to Stanmore, and went up both Stanmore Hill and Brockley Hill. In ascending these hills the driving-wheels did not slip, so that the legs were not needed. After these experiments the propellers were removed.
Gurney obtained another patent in 1827, and under this worked a steam carriage resembling the common stage coach, with the boiler in the hind boot. This carriage was run experimentally to Barnet, Edgeware, Finchley, and other places, and in 1828 it was said that a trip was made from London to Melksham, thirteen miles from Bath, a distance of nearly two hundred miles. On the return trip the rate of speed was about twelve miles an hour.
Gurney"s carriage so fully established its practicability, that in 1830, Sir Charles Dance contracted for several, and ran them successfully from London to Holyhead, and from Birmingham to Bristol. In the following year he ran over the turnpike road between Gloucester and Cheltenham for four months in succession, four times a day, without an accident or delay of consequence. The distance of nine miles was regularly covered in from forty-five to fifty-five minutes. Nearly three thousand persons were carried, and nearly four thousand miles traveled.
A strong public sentiment against the use of the common roads by these vehicles sprang up, and Parliament was prevailed upon to impose upon steam carriages heavy highway tolls that were in effect prohibitory. Sir Charles Dance suspended his operations. Gurney pet.i.tioned the House of Commons for relief. Several committees in 1831, 1834 and 1835 investigated the subject and reported strongly in favor of steam carriages, but no legislation could be secured, and Gurney was forced to give up further introduction of steam carriages.
He continued his experimenting in other directions, invented the stove that bore his name, introduced new methods of lighting and ventilating the Houses of Parliament, and was otherwise active in scientific pursuits. He was a magistrate for Cornwall and Devonshire, and in 1863 was knighted in recognition of his discoveries and inventions.
By writers of that period Gurney received a great deal of credit and an abundance of advertising for his work. He was especially conspicuous in the Parliamentary investigations regarding steam carriages. On the whole, however, it is generally considered that he was proclaimed far beyond his merits, especially in comparison with such rivals as Hanc.o.c.k, Maceroni and others.