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188532138London Institution of Mechanical Engineers 1885. 8vo. Original printed wrappers. Contained in the April issue of Proceedings of The Institution of Mechanical Engineers pp.167-197 with 8 plates. The whole issue offered here. Custom cloth box with gilt leather title on spine. <br/><br/><em>First edition. Maxim's first announcement of his invention of the automatic machine-gun; using the energy from the recoil force to eject each spent cartridge and insert the next one Maxim came up with the single-man operated machine-gun. Earlier types of machine-guns as the Gatling and Gardner consisted of multiple barrels and were powered by the manual turning of a crank which made them very heavy and caused them to require several men in order to operate them. The invention of the Maxim-mechanism allowed for a single-barrel construction and the new machine-gun could potentially be operated by just one man which thus led to the modern automatic machine-gun. Scarce. </em> hardcover