Alexander Bain (inventor) - Biography - Career

Career

Having learned the art of clockmaking, he went to Edinburgh, and in 1837 to London, where he obtained work as a journeyman in Clerkenwell. Bain frequented the lectures at the Polytechnic Institution and the Adelaide Gallery and later constructed his own workshop in Hanover Street.

In 1840, desperate for money to develop his inventions, Bain mentioned his financial problems to the editor of the Mechanics Magazine, who introduced him to Sir Charles Wheatstone. Bain demonstrated his models to Wheatstone, who, when asked for his opinion, said "Oh, I shouldn't bother to develop these things any further! There's no future in them." Three months later Wheatstone demonstrated an electric clock to the Royal Society, claiming it was his own invention. However, Bain had already applied for a patent for it. Wheatstone tried to block Bain's patents, but failed. When Wheatstone organised an Act of Parliament to set up the Electric Telegraph Company, the House of Lords summoned Bain to give evidence, and eventually compelled the company to pay Bain £10,000 and give him a job as manager, causing Wheatstone to resign.

Bain's first patent was dated 11 January 1841, and was in the names of John Barwise, chronometer maker, and Alexander Bain, mechanist. It describes his electric clock which uses a pendulum kept moving by electromagnetic impulses. He improved on this in later patents, including a proposal to derive the required electricity from an "earth battery", which consisted of plates of zinc and copper buried in the ground.

In December 1841, Bain in conjunction with Lieutenant Thomas Wright RN, patented a method for using electricity to control railway engines by turning off steam, marking time, giving signals, and printing information at different locations. The most significant idea incorporated in the patent was his plan for inverting the needle telegraph earlier developed by Ampere, Wheatstone and others: instead of making signals by a pivoted magnetic needle under the influence of an electromagnet, he made them by suspending a movable coil between the poles of a fixed magnet. A similar concept appears in Sir William Thomson's siphon recorder. Bain also proposed to make the coil record messages by printing them, an idea he developed further in a subsequent patent.

Bain is known to have said,

For many years I have devoted myself to rendering electricity practically useful, and have been extensively engaged, not only in this country, but in America and on the Continent, in the construction and working of the Electric Telegraph; while at the same time, the employment of electricity in the measurement of time has also engaged my attention.

Read more about this topic:  Alexander Bain (inventor), Biography

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