Men of Invention and Industry Part 5

To return to "Screw" Smith, after the successful trial of his little vessel at sea in the autumn of 1837. He had many difficulties yet to contend with. There was, first, the difficulty of a new invention, and the fact that the paddle-boat had established itself in public estimation. The engineering and s.h.i.+pbuilding world were dead against him. They regarded the project of propelling a vessel by means of a screw as visionary and preposterous. There was also the official unwillingness to undertake anything novel, untried, and contrary to routine. There was the usual shaking of the head and the shrugging of the shoulders, as if the inventor were either a mere dreamer or a projector eager to lay his hands upon the public purse. The surveyor of the navy was opposed to the plan, because of the impossibility of making a vessel steer which was impelled from the stern. "Screw" Smith bided his time; he continued undaunted, and was determined to succeed.

He laboured steadily onward, maintaining his own faith unshaken, and upholding the faith of the gentlemen who had become a.s.sociated with him in the prosecution of the invention.

At the beginning of 1838 the Lords of the Admiralty requested Mr. Smith to allow his vessel to be tried under their inspection. Two trials were accordingly made, and they gave so much satisfaction that the adoption of the propeller for naval purposes was considered as a not improbable contingency. Before deciding finally upon its adoption, the Lords of the Admiralty were anxious to see an experiment made with a vessel of not less than 200 tons. Mr. Smith had not the means of accomplis.h.i.+ng this by himself, but with the improved prospects of the invention, capitalists now came to his aid. One of the most effective and energetic of these was Mr. Henry Currie, banker; and, with the a.s.sistance of others, the "s.h.i.+p Propeller Company" was formed, and proceeded to erect the test s.h.i.+p proposed by the Admiralty.

The result was the Archimedes, a wooden vessel of 237 tons burthen.

She was designed by Mr. Pasco, laid down by Mr. Wimshurst in the spring of 1838, was launched on the 18th of October following, and made her first trip in May 1839. She was fitted with a screw of one turn placed in the dead wood, and propelled by a pair of engines of 80-horse power.

The vessel was built under the persuasion that her performance would be considered satisfactory if a speed was attained of four or five knots an hour, where as her actual speed was nine and a half knots. The Lords of the Admiralty were invited to inspect the s.h.i.+p. At the second trial Sir Edward Parry, Sir William Symonds, Captain Basil Hall, and other distinguished persons were present.

The results were again satisfactory. The success of the Archimedes astonished the engineering world. Even the Surveyor of the Royal Navy found that the vessel could steer! The Lords of the Admiralty could no longer shut their eyes. But the invention could not at once be adopted. It must be tested by the best judges. The vessel was sent to Dover to be tried with the best packets between Dover and Calais. Mr.

Lloyd, the chief engineer of the Navy, conducted the investigation, and reported most favourably as to the manner of her performance. Yet several years elapsed before the screw was introduced into the service.

In 1840 the Archimedes was placed at the disposal of Captain Chappell, of the Royal Navy, who, accompanied by Mr. Smith, visited every princ.i.p.al port in Great Britain. She was thus seen by s.h.i.+powners, marine engineers, and s.h.i.+pbuilders in every part of the kingdom. They regarded her with wonder and admiration; yet the new mode of navigation was not speedily adopted. The paddle-wheel still held its own. The sentiment, if not the plant and capital, of the engineering world, were against the introduction of the screw. After the vessel had returned from her circ.u.mnavigation of Great Britain, she was sent to Oporto, and performed the voyage in sixty-eight and a half hours, then held to be the quickest voyage on record. She was then sent to the Texel at the request of the Dutch Government. She went through the North Holland Ca.n.a.l, visited Amsterdam, Antwerp, and other ports; and everywhere left the impression that the screw was an efficient and reliable power in the propulsion of vessels at sea.

s.h.i.+pbuilders, however, continued to "fight shy" of the screw. The late Isambard Kingdon Brunel is ent.i.tled to the credit of having first directed the attention of s.h.i.+pbuilders to this important invention. He was himself a man of original views, free from bias, and always ready to strike out a fresh path in engineering works. He was building a large new iron steamer at Bristol, the Great Britain, for pa.s.senger traffic between England and America. He had intended to construct her as a paddle steamer; but hearing of the success of the Archimedes, he inspected the vessel, and was so satisfied with the performance of the screw that he recommended his directors to adopt this method for propelling the Great Britain. His advice was adopted, and the vessel was altered so as to adapt her for the reception of the screw. The vessel was found perfectly successful, and on her first voyage to London she attained the speed of ten knots an hour, though the wind and balance of tides were against her. A few other merchant s.h.i.+ps were built and fitted with the screw; the Princess Royal at Newcastle in 1840, the Margaret and Senator at Hull, and the Great Northern at Londonderry, in 1841.

The Lords of the Admiralty made slow progress in adapting the screw for the Royal Navy. Sir William Symonds, the surveyor and princ.i.p.al designer of Her Majesty's s.h.i.+ps, was opposed to all new projects. He hated steam power, and was utterly opposed to iron s.h.i.+ps. He speaks of them in his journal as "monstrous."[7] So long as he remained in office everything was done in a perfunctory way. A small vessel named the Bee was built at Chatham in 1841, and fitted with both paddles and the screw for the purposes of experiment. In the same year the Rattier, the first screw vessel built for the navy, was laid down at Sheerness. Although of only 888 tons burthen, she was not launched until the spring of 1843. She was then fitted with the same kind of screw as the Archimedes, that is, a double-headed screw of half a convolution. Experiments went on for about three years, so as to determine the best proportions of the screw, and the proportions then ascertained have since been the princ.i.p.al guides of engineering practice.

The Rattler was at length tried in a water tournament with the paddle-steamer Alecto, and signally defeated her. Francis Pett.i.t Smith, like Gulliver, may be said to have dragged the whole British fleet after him. Were the paddle our only means of propulsion, our whole naval force would be reduced to a nullity. Hostile gunners would wing a paddle-steamer as effectually as a sportsman wings a bird, and all the plating in the world would render such a s.h.i.+p a mere helpless log on the water.

The Admiralty could no longer defer the use of this important invention. Like all good things, it made its way slowly and by degrees. The royal naval authorities, who in 1833 backed the side paddles, have since adopted the screw in most of the s.h.i.+ps-of-war. In all long sea-going voyages, also, the screw is now the favourite mode of propulsion. Screw s.h.i.+ps of prodigious size are now built and launched in all the s.h.i.+p-building ports of Britain, and are sent out to navigate in every part of the world.

The introduction of iron as the material for s.h.i.+pbuilding has immensely advanced the interests of steam navigation, as it enables the builders to construct vessels of great size with the finest lines, so as to attain the highest rates of speed.

One might have supposed that Francis Pett.i.t Smith would derive some substantial benefit from his invention, or at least that the s.h.i.+p Propeller Company would distribute large dividends among their proprietors. Nothing of the kind. Smith spent his money, his labour, and his ingenuity in conferring a great public benefit without receiving any adequate reward; and the company, instead of distributing dividends, lost about 50,000L. in introducing this great invention; after which, in 1856, the patent-right expired. Three hundred and twenty-seven s.h.i.+ps and vessels of all cla.s.ses in the Royal Navy had then been fitted with the screw propeller, and a much larger number in the merchant service; but since that time the number of screw propellers constructed is to be counted by thousands.

In his comparatively impoverished condition it was found necessary to do something for the inventor. The Civil Engineers, with Robert Stephenson, M.P., in the chair, entertained him at a dinner and presented him with a handsome salver and claret jug. And that he might have something to put upon his salver and into his claret jug, a number of his friends and admirers subscribed over 2000L. as a testimonial.

The Government appointed him Curator of the Patent Museum at South Kensington; the Queen granted him a pension on the Civil List for 200L.

a year; he was raised to the honour of knighthood in 1871, and three years later he died.

Francis Pett.i.t Smith was not a great inventor. He had, like many others, invented a screw propeller. But, while those others had given up the idea of prosecuting it to its completion, Smith stuck to his invention with determined tenacity, and never let it go until he had secured for it a complete triumph. As Mr. Stephenson observed at the engineer's meeting: "Mr. Smith had worked from a platform which might have been raised by others, as Watt had done, and as other great men had done; but he had made a stride in advance which was almost tantamount to a new invention. It was impossible to overrate the advantages which this and other countries had derived from his untiring and devoted patience in prosecuting the invention to a successful issue." Baron Charles Dupin compared the farmer Smith with the barber Arkwright: "He had the same perseverance and the same indomitable courage. These two moral qualities enabled him to triumph over every obstacle." This was the merit of "Screw" Smith--that he was determined to realize what his predecessors had dreamt of achieving; and he eventually accomplished his great purpose.

Footnotes for Chapter II.

[1] In the Transactions of the Inst.i.tution of Naval Architects for 1860, it was pointed out that the general dimensions and form of bottom of this s.h.i.+p were very similar to the most famous line-of-battle s.h.i.+ps built down to the end of last century, some of which were then in existence.

[2] According to the calculation of Mr. Chatfield, of Her Majesty's dockyard at Plymouth, in a paper read before the British a.s.sociation in 1841 on s.h.i.+pbuilding.

[3] The phrase "wooden walls" is derived from the Greek. When the city of Athens was once in danger of being attacked and destroyed, the oracle of Delphi was consulted. The inhabitants were told that there was no safety for them but in their "wooden walls,"--that is their s.h.i.+pping. As they had then a powerful fleet, the oracle gave them rational advice, which had the effect of saving the Athenian people.

[4] An account of these is given by Bennet Woodcraft in his Sketch of the Origin and Progress of Steam Navigation, London, 1848.

[5] See Industrial Biography, pp. 183-197,

[6] The story is told in Scribner's Monthly Ill.u.s.trated Magazine, for April 1879. Ericsson's modest bill was only $15,000 for two years'

labour. He was put off from year to year, and at length the Government refused to pay the amount. "The American Government," says the editor of Scribner, "will not appropriate the money to pay it, and that is all. It is said to be the nature of republics to be ungrateful; but must they also be dishonest?"

[7] Memoirs of the Life and Services of Rear-Admiral Sir William Symonds, Kt., p. 332.

CHAPTER III.[1]

JOHN HARRISON: INVENTOR OF THE MARINE CHRONOMETER.

"No man knows who invented the mariner's compa.s.s, or who first hollowed out a canoe from a log. The power to observe accurately the sun, moon, and planets, so as to fix a vessel's actual position when far out of sight of land, enabling long voyages to be safely made; the marvellous improvements in s.h.i.+p-building, which shortened pa.s.sages by sailing vessels, and vastly reduced freights even before steam gave an independent force to the carrier--each and all were done by small advances, which together contributed to the general movement of mankind.... Each owes all to the others. The forgotten inventors live for ever in the usefulness of the work they have done and the progress they have striven for."--H. M. Hyndman.

One of the most extraordinary things connected with Applied Science is the method by which the Navigator is enabled to find the exact spot of sea on which his s.h.i.+p rides. There may be nothing but water and sky within his view; he may be in the midst of the ocean, or gradually nearing the land; the curvature of the globe baffles the search of his telescope; but if he have a correct chronometer, and can make an astronomical observation, he may readily ascertain his longitude, and know his approximate position--how far he is from home, as well as from his intended destination. He is even enabled, at some special place, to send down his grappling-irons into the sea, and pick up an electrical cable for examination and repair.

This is the result of a knowledge of Practical Astronomy. "Place an astronomer," says Mr. Newcomb, "on board a s.h.i.+p; blindfold him; carry him by any route to any ocean on the globe, whether under the tropics or in one of the frigid zones; land him on the wildest rock that can be found; remove his bandage, and give him a chronometer regulated to Greenwich or Was.h.i.+ngton time, a transit instrument with the proper appliances, and the necessary books and tables, and in a single clear night he can tell his position within a hundred yards by observations of the stars. This, from a utilitarian point of view, is one of the most important operations of Practical Astronomy."[2]

The Marine Chronometer was the outcome of the crying want of the sixteenth century for an instrument that should a.s.sist the navigator to find his longitude on the pathless ocean. Spain was then the princ.i.p.al naval power; she was the most potent monarchy in Europe, and held half America under her sway. Philip III. offered 100,000 crowns for any discovery by means of which the longitude might be determined by a better method than by the log, which was found very defective. Holland next became a great naval power, and followed the example of Spain in offering 30,000 florins for a similar discovery. But though some efforts were made, nothing practical was done, princ.i.p.ally through the defective state of astronomical instruments. England succeeded Spain and Holland as a naval power; and when Charles II. established the Greenwich Observatory, it was made a special point that Flamsteed, the Astronomer-Royal, should direct his best energies to the perfecting of a method for finding the longitude by astronomical observations. But though Flamsteed, together with Halley and Newton, made some progress, they were prevented from obtaining ultimate success by the want of efficient chronometers and the defective nature of astronomical instruments.

Nothing was done until the reign of Queen Anne, when a pet.i.tion was presented to the Legislature on the 25th of May, 1714, by "several captains of Her Majesty's s.h.i.+ps, merchants in London, and commanders of merchantmen, in behalf of themselves, and of all others concerned in the navigation of Great Britain," setting forth the importance of the accurate discovery of the longitude, and the inconvenience and danger to which s.h.i.+ps were subjected from the want of some suitable method of discovering it. The pet.i.tion was referred to a committee, which took evidence on the subject. It appears that Sir Isaac Newton, with his extraordinary sagacity, hit the mark in his report. "One is," he said, "by a watch to keep time exactly; but, by reason of the motion of a s.h.i.+p, and the variation of heat and cold, wet and dry, and the difference of gravity in different lat.i.tudes, such a watch hath not yet been made."

An Act was however pa.s.sed in the Session of 1714, offering a very large public reward to inventors: 10,000L. to any one who should discover a method of determining the longitude to one degree of a great circle, or 60 geographical miles; 15,000L. if it determined the same to two-thirds of that distance, or 40 geographical miles; and 20,000L. if it determined the same to one-half of the same distance, or 30 geographical miles. Commissioners were appointed by the same Act, who were instructed that "one moiety or half part of such reward shall be due and paid when the said commissioners, or the major part of them, do agree that any such method extends to the security of s.h.i.+ps within 80 geographical miles of the sh.o.r.e, which are places of the greatest danger; and the other moiety or half part when a s.h.i.+p, by the appointment of the said commissioners, or the major part of them, shall actually sail over the ocean, from Great Britain to any such port in the West Indies as those commissioners, or the major part of them, shall choose or nominate for the experiment, without losing the longitude beyond the limits before mentioned."

The terms of this offer indicate how great must have been the risk and inconvenience which it was desired to remedy. Indeed, it is almost inconceivable that a reward so great could be held out for a method which would merely afford security within eighty geographical miles!

This splendid reward for a method of discovering the longitude was offered to the world--to inventors and scientific men of all countries--without restriction of race, or nation, or language. As might naturally be expected, the prospect of obtaining it stimulated many ingenious men to make suggestions and contrive experiments; but for many years the successful construction of a marine time-keeper seemed almost hopeless. At length, to the surprise of every one, the prize was won by a village carpenter--a person of no school, or university, or college whatever.

Even so distinguished an artist and philosopher as Sir Christopher Wren was engaged, as late in his life as the year 1720, in attempting to solve this important problem. As has been observed, in the memoir of him contained in the 'Biographia Britannica,'[3] "This n.o.ble invention, like some others of the most useful ones to human life, seems to be reserved for the peculiar glory of an ordinary mechanic, who, by indefatigable industry, under the guidance of no ordinary sagacity, hath seemingly at last surmounted all difficulties, and brought it to a most unexpected degree of perfection." Where learning and science failed, natural genius seems to have triumphed.

The truth is, that the great mechanic, like the great poet, is born, not made; and John Harrison, the winner of the famous prize, was a born mechanic. He did not, however, accomplish his object without the exercise of the greatest skill, patience, and perseverance. His efforts were long, laborious, and sometimes apparently hopeless.

Indeed, his life, so far as we can ascertain the facts, affords one of the finest examples of difficulties encountered and triumphantly overcome, and of undaunted perseverance eventually crowned by success, which is to be found in the whole range of biography.

No complete narrative of Harrison's career was ever written. Only a short notice of him appears in the 'Biographia Britannica,' published in 1766, during his lifetime'--the facts of which were obtained from himself. A few notices of him appear in the 'Annual Register,' also published during his lifetime. The final notice appeared in the volume published in 1777, the year after his death. No Life of him has since appeared. Had he been a destructive hero, and fought battles by land or sea, we should have had biographies of him without end. But he pursued a more peaceful and industrious course. His discovery conferred an incalculable advantage on navigation, and enabled innumerable lives to be saved at sea; it also added to the domains of science by its more exact measurement of time. But his memory has been suffered to pa.s.s silently away, without any record being left for the benefit and advantage of those who have succeeded him. The following memoir includes nearly all that is known of the life and labours of John Harrison.

He was born at Foulby, in the parish of Wragby, near Pontefract, Yorks.h.i.+re, in March, 1693. His father, Henry Harrison, was carpenter and joiner to Sir Rowland Winn, owner of the Nostell Priory estate.

The present house was built by the baronet on the site of the ancient priory. Henry Harrison was a sort of retainer of the family, and long continued in their Service.

Little is known of the boy's education. It was certainly of a very inferior description. Like George Stephenson, Harrison always had a great difficulty in making himself understood, either by speech or writing. Indeed, every board-school boy now receives a better education than John Harrison did a hundred and eighty years ago. But education does not altogether come by reading and writing. The boy was possessed of vigorous natural abilities. He was especially attracted by every machine that moved upon wheels. The boy was 'father to the man.' When six years old, and lying sick of small-pox, a going watch was placed upon his pillow, which afforded him infinite delight.

When seven years old he was taken by his father to Barrow, near Barton-on-Humber, where Sir Rowland Winn had another residence and estate. Henry Harrison was still acting as the baronet's carpenter and joiner. In course of time young Harrison joined his father in the workshop, and proved of great use to him. His opportunities for acquiring knowledge were still very few, but he applied his powers of observation and his workmans.h.i.+p upon the things which were nearest him.

He worked in wood, and to wood he first turned his attention.

He was still fond of machines going upon wheels. He had enjoyed the sight of the big watch going upon bra.s.s wheels when he was a boy; but, now that he was a workman in wood, he proposed to make an eight-day clock, with wheels of this material. He made the clock in 1713, when he was twenty years old,[4] so that he must have made diligent use of his opportunities. He had of course difficulties to encounter, and nothing can be accomplished without them; for it is difficulties that train the habits of application and perseverance. But he succeeded in making an effective clock, which counted the time with regularity.

This clock is still in existence. It is to be seen at the Museum of Patents, South Kensington; and when we visited it a few months ago it was going, and still marking the moments as they pa.s.sed. It is contained in a case about six feet high, with a gla.s.s front, showing a pendulum and two weights. Over the clock is the following inscription:

"This clock was made at Barrow, Lincolns.h.i.+re, in the year 1715, by John Harrison, celebrated as the inventor of a nautical timepiece, or chronometer, which gained the reward of 20,000L., offered by the Board of Longitude, A.D. 1767.

"This clock strikes the hour, indicates the day of the month, and with one exception (the escapement) the wheels are entirely made of wood."

This, however, was only a beginning. Harrison proceeded to make better clocks; and then he found it necessary to introduce metal, which was more lasting. He made pivots of bra.s.s, which moved more conveniently in sockets of wood with the use of oil. He also caused the teeth of his wheels to run against cylindrical rollers of wood, fixed by bra.s.s pins, at a proper distance from the axis of the pinions; and thus to a considerable extent removed the inconveniences of friction.

In the meantime Harrison eagerly improved every incident from which he might derive further information. There was a clergyman who came every Sunday to the village to officiate in the neighbourhood; and having heard of the sedulous application of the young carpenter, he lent him a ma.n.u.script copy of Professor Saunderson's discourses. That blind professor had prepared several lectures on natural philosophy for the use of his students, though they were not intended for publication.

Young Harrison now proceeded to copy them out, together with the diagrams. Sometimes, indeed, he spent the greater part of the night in writing or drawing.

As part of his business, he undertook to survey land, and to repair clocks and watches, besides carrying on his trade of a carpenter. He soon obtained a considerable knowledge of what had been done in clocks and watches, and was able to do not only what the best professional workers had done, but to strike out entirely new lights in the clock and watch-making business. He found out a method of diminis.h.i.+ng friction by adding a joint to the pallets of the pendulum, whereby they were made to work in the nature of rollers of a large radius, without any sliding, as usual, upon the teeth of the wheel. He constructed a clock on the recoiling principle, which went perfectly, and never lost a minute within fourteen years. Sir Edmund Denison Beckett says that he invented this method in order to save himself the trouble of going so frequently to oil the escapement of a turret clock, of which he had charge; though there were other influences at work besides this.