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Scientific American, Vol. 27, No. 12 (September 1872) (1872)

leaf 7

An illustration from Scientific American, Vol. 27, No. 12 (September 1872), 1872, leaf 7
ted as extending from the lower corners principle, the oil chamber being placed within the circumfer- wire and electric circuit betray the operations of the burglar and from the center of the bottom rail, between two swing- ence of the bearing upon which the pulley revolves. This and, thief, and… … diagonal to a vertical position, and then, swinging pass their center, fall as shown by WHEEL AND ROLLER SASH CATCH. HOOKER'S ROAD OR FARM GATE. the dotted lines in the engraving. The gate, which is guided by the prolonged bar before referred to, is The sash catch herewith illustrated is a most…

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