. 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. ts thatoperate pumps for returning the waterto the upper tank. 945. PERPETUAL MOTION. The sponge problem of Sir , of rocket fame. Three horizontal rollers are fixed in a frame; an endless band of sponge runsround these rollers, and carrieson the outside an e
. 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. ts thatoperate pumps for returning the waterto the upper tank. 945. PERPETUAL MOTION. The sponge problem of Sir , of rocket fame. Three horizontal rollers are fixed in a frame; an endless band of sponge runsround these rollers, and carrieson the outside an endless chainof weights surrounding the bandof sponge and attached to it, sothat they must move together,every part of this band and chainbeing so accurately uniform inweight that the perpendicularside will, in all positions of the r— — ? ? band and chain be in equilibrium with the hypotenuse, on the principle of the inclined plane. The framein which these rollers are fixed is placed in a cistern of water havingits lower part immersed. On the perpendicular side of the triangle, the weights hanging per-pendicularly alongside the band of sponge, the band is not compressedby them; and, its pores being left open, the water, at the point where theband meets its surface, will rise to a certain height above its level, and. PERPETUAL MOTION. 379 thereby create a load, which load will not exist on the ascending side,because on this side the chain of weights compresses the band at thewaters edge, and squeezes out any water that may have previously ac-cumulated in it, so that the band rises in a dry state, the weight of thechain having been so proportioned to the breadth and thickness of theband as to be sufl&cient to produce this effect, 946. PERPETUAL MOTION. Transfer of air. It is an end-less rubber tube, with projections, on which are fastened thin rubber bags, and a small weight attached to eachbag. The bags are filled with air when theweight hangs down, and when it comes on topit
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