. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. 573. Shovel fend-ers, on spring 574. Helical springboxes with leafsprings under carbody. 575. Cast - steelbox frame bolted tostraight iron frame. 224 RAILWAY DEVICES AND APPLIANCES, ETC.

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