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Scientific American, Vol. 89, No. 4 (July 1903) (1903)

leaf 10

An illustration from Scientific American, Vol. 89, No. 4 (July 1903), 1903, leaf 10
proof leather heel protector sure bulb, at each end of which is a valve. These the boxes can swing to take up any unevenness in the valves. are normally open, so as not to interfere with shown more clearly in Pig. 2, which is adapted to be road. The hubs of the rear wheels may be of any slipped… … made by means of a pair of spring-pressed pins in the prises the shank A, with HOT-WATER BAG. nub, which engage notches in the spherical portion, C. the usual handle, G, and In our illustration, the section is so taken that neither the chamber E, for the the proper circulation of the water. By…

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