Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 121
6- c3^^ ^ -3 So • O O rj 1)- S fci !*» W oi O ^1iS O) o , ■« -o tnM PS ft[ii X i BUILDING SUPERINTENDENCE 8S … Fig. 85. Loose-Pin Butt. rim locks or mortise locks. Tumbler locks are the ordmarykind of lock operated by a long key (Fig. 86), and depend upon tum-blers or levers which are raised by the key to an exact positionbefore the bolt can be thrown. Cylinder locks consist of two cylin=ders, a small…
Architecture · Building
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