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Scientific American, Vol. 65, No. 22 (1891) (1891)
leaf 4
er, bringing the weight sired position in the wider portions of the slideways trunnion, the worm-wheel being in mesh with a ver- almost in a horizontal position, and throwing the bolt, without exerting tension at all times on the sash tical worm, and the outer end of the pin having a as shown in… … MACE’S LATCH, OR SPRINGLESS LOCK, the rimless wheel therein, the clutch teeth will slide by © 1891 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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