Builder's hardware; a manual for architects, builders and house furnishers . Fig. 338. The Fig. 3 3 9. The Foster G. Newman. the Yale & Towne Manufacturing Company as an infringementon their patents. CYLINDER LOCKS. 219 Figure 339 illustrates the Foster lock, manufactured byA. G. Newman, a very ingeniously devised lock, which isharder to pick than the Yale, and, as put on the market,shows the greatest of care in workmanship and finish. Thecross-section of the escutcheon shows the internal outer shell. A, is fixed to the lock-case. The plug, B. ishollow,
Builder's hardware; a manual for architects, builders and house furnishers . Fig. 338. The Fig. 3 3 9. The Foster G. Newman. the Yale & Towne Manufacturing Company as an infringementon their patents. CYLINDER LOCKS. 219 Figure 339 illustrates the Foster lock, manufactured byA. G. Newman, a very ingeniously devised lock, which isharder to pick than the Yale, and, as put on the market,shows the greatest of care in workmanship and finish. Thecross-section of the escutcheon shows the internal outer shell. A, is fixed to the lock-case. The plug, B. ishollow, and fitted with ten slides C, which work through cutsin the side of the plug and catch in slots, E, E, cut in theshell, so that the plug cannot rotate until the slides are with-drawn. Half of the slides protrude from the plug towards theright and half towards the left; each slide being fitted with asmall brass spring, D. The key is cut with an irregular cleft,and the slides are cut out, with a cross-piece near the cross-pieces, and the sinuosities of the cleft in the key areso mu tally
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Keywords: ., bookcentury1800, bookdecade1890, bookidbuildershard, bookyear1890
