Nomenclature of the Gun Lock.—The number of pieces in a common gun lock, as shown, are thirteen, and are fully illustrated in the cut, [Fig. 77]. A, is the lock-plate; B, the hammer; C, mainspring; D, the bridle; E, the tumbler; F, the sear; G, the sear-spring; H, the swivel or stirrup; I, the sear-spring screw; K, K, K, the bridle screws; L, hole for side-screw. In some locks there are only two bridle screws. In others a screw holds the mainspring to place instead of a lip catching under the stud.
Figure 80.
Figure 81.
Nomenclature of the Hammer.—The names of different parts of the hammer, [Fig. 78], are: a, the body; b, the head; c, the comb; d, the nose; e, the cup; f, tumbler-hole.
Figure 82.
Nomenclature of the Lock-Plate.—The names of different portions of the lock-plate, [Fig. 79], are: a, the bolster; b, mainspring-catch; c, hole for mainspring-pivot; d, hole for side-screw; e, hole for arbor of tumbler; f, hole for sear-screw; g, hole for sear spring-screw; h, slot for sear-spring stud; i, i, holes for bridle screws.
