Builder's hardware; a manual for architects, builders and house furnishers . anufactured by Nimick &Brittan, in which the lever and bolt are essentially the sameas in the preceding ex-ample, but which has afollow arranged upon adifferent principle, lugsbeing cast on the topand bottom so as tobear against the irreg-ular spring-lever A, andthe latch-bolt beingpinned to an extensionof the lever. The fol-low and lever shown inFigure 307, a lock byJ. B. Shannon & Sons,is of much the same de-scription. In both ofthese, the knob can beturned more easily tothe left than to theright by reason ofthe une
Builder's hardware; a manual for architects, builders and house furnishers . anufactured by Nimick &Brittan, in which the lever and bolt are essentially the sameas in the preceding ex-ample, but which has afollow arranged upon adifferent principle, lugsbeing cast on the topand bottom so as tobear against the irreg-ular spring-lever A, andthe latch-bolt beingpinned to an extensionof the lever. The fol-low and lever shown inFigure 307, a lock byJ. B. Shannon & Sons,is of much the same de-scription. In both ofthese, the knob can beturned more easily tothe left than to theright by reason ofthe unequal leverage against the piece A, though the differencein resistance is partially compensated for by making the shoul-clers on the follow of unequal lengths. The lock shown by thelast figure has three levers, and is catalogued as being hand-made. In Figure 306 the latch is reversible so that the lockcan answer for either a right or a left hand door. The Niles locks, of which Figure 308 is a type, are allmade to be operated by knobs having a follow cast solid onto. Fig. 306. Reversible Mortise Mfg. Co. ORDINARY LOCK AND LATCH. 1!)7 the spindle. The action of the knob will be referred to lateron. The figure shows only the follow, which is inserted from the back. The Niles lockshave the nameof wearing verywell. The leversare of steel andare pretty wellfitted for a ma-chine-made lock,and the springsare also of steel,the bolt being theonly portion ofthe mechanismfor which brassis employed. Asin some of theprevious exam-ples, the knobturns more easilytowards the leftthan the instead of theirregular, hingedlever, B, a form were adopted similar to that shown in Figure305, the Niles locks would leave little to be desired, andwould compare favorably with anything else in the market. An examination of the figures will show that, except in thevery cheapest example, the face-plate of the lock is screwed tothe lock-case in such a manner that it can be moved slightlyand
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Keywords: ., bookcentury1800, bookdecade1890, bookidbuildershard, bookyear1890
