1972-02-01

50 YEARS OF MARINE GEAR EVOLUTION 720280

A colorful series of 150 slides was presented tracing 5 HP to 1200 HP marine gear design evolution beginning in 1906, followed by pre-WWI developments, Liberty Aircraft engine usage and a 1924 to 1972 series of pleasure boat and work boat marine gear photographs.The entire slide presentation is available in 35 m.m. film strip and may be ordered (at cost) from the author, R. C. McRoberts, Twin Disc, Incorporated, Racine, Wisconsin, 53403, U.S.A. For short time usage, a loan film is available.This history of U. S. marine gear development includes information contributed by the Snow-Nabstedt Gear Corp., Capitol Gears, Inc., Paragon Gears, Inc., The Walter Machine Co., Inc., Detroit Diesel Allison Div. of General Motors Corp., Caterpillar Tractor Co., Warner Gear Div. Borg-Warner Corp. and Twin Disc, Incorporated.

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