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Scientific American, Vol. 63, No. 16 (1890) (1890)

leaf 4

An illustration from Scientific American, Vol. 63, No. 16 (1890), 1890, leaf 4
vy pieces Marcus E. Benson, of West Plains, Mo. On the head purposes. . It is a guard provided with a thumb rest free from defects. The pressure of 1,000 lb. to the inch block is a standard on which is held a horizontally ad- and a ring, and is secured to a knife by transverse rivets is obtained by… … BENSON’S SAW MILL DOG. held on the opposite side of the The device shown in the accompanying illustration lever a spring-pressed arm with seg- is designed to be operated from the sides or top of mental edge adapted to be pressed in contact with a up to 30° Centigrade. It has been found by experi-…

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