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Scientific American, Vol. 13, No. 20 (January 23, 1858) (1858)

leaf 3

An illustration from Scientific American, Vol. 13, No. 20 (January 23, 1858), 1858, leaf 3
d. The cutters are mounted on @ platform, G, and the cutters are not required tobe operated, ratchet teeth to the axle of the wheel, C, as This metal is more dense than geld. The on the back of which is the raker’s seat, the ig also the other large wheel, both of them the ratchets can be thrown out… … with decided advantage in almost every case to allow of it being elevated or depressed with to overcome any obstacle which they may en- platform being well and strongly hinged of tooth disease, if carefully performed. Dr. counter. On the end of one of the wheels, B, the cutter platform. to the…

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