Builder's hardware; a manual for architects, builders and house furnishers . d directly to the heel of the lever, asshown by Figure 282. A separate spring is necessary for eachlever. It is sometimes desirable to attach the spring to asecondary lever acting directly on the top of the main lever,Figure 285, as in a case where the levers move up and down inthe lock instead of being pivoted together. With such anarrangement the edge of the secondary lever should be groovedso as to fit over the top of the primary lever, thus obviatingany difficulty of the levers slipping by each other, or of thewro
Builder's hardware; a manual for architects, builders and house furnishers . d directly to the heel of the lever, asshown by Figure 282. A separate spring is necessary for eachlever. It is sometimes desirable to attach the spring to asecondary lever acting directly on the top of the main lever,Figure 285, as in a case where the levers move up and down inthe lock instead of being pivoted together. With such anarrangement the edge of the secondary lever should be groovedso as to fit over the top of the primary lever, thus obviatingany difficulty of the levers slipping by each other, or of thewrong springs acting on the levers. LOCKS. 177 The latch is a feature of the modern lock which ourancestors did not enjoy. Except in the case of store-doors, alldoor-locks are now made with some form of are three distinct kinds of latches commonly used, thesimple spring-latch, anti-fric-tion latch and front-door cheapest form of ordi-nary spring-latch consists of abevelled head, projecting fromthe face-plate of the lock, with ?EG FAJTE-nepTO BOUT. JTKIKE
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