Builder's hardware; a manual for architects, builders and house furnishers . CK055 SeCTlOtt HORIZONTAL SE-CTIO/t ^wJ^lw^. REAR. Fig. 340. Cylinder Lock. VERTICAL SECTIONHopkins & Dickinson Mfg. Co. in grooves, with a hole through the centre sufficiently large toallow the ends of the slides to protrude by it. The top of eachslide has one notch in it the same width as the thickness of thefence, at varying distances from the key-hole, besides one or CYLINDER LOCKS. more false notches of lesser depth. The plug is extended withan arm, G, by which the lock-bolt is operated. The mechanism operates as
Builder's hardware; a manual for architects, builders and house furnishers . CK055 SeCTlOtt HORIZONTAL SE-CTIO/t ^wJ^lw^. REAR. Fig. 340. Cylinder Lock. VERTICAL SECTIONHopkins & Dickinson Mfg. Co. in grooves, with a hole through the centre sufficiently large toallow the ends of the slides to protrude by it. The top of eachslide has one notch in it the same width as the thickness of thefence, at varying distances from the key-hole, besides one or CYLINDER LOCKS. more false notches of lesser depth. The plug is extended withan arm, G, by which the lock-bolt is operated. The mechanism operates as follows: The fence is in theplane of an eccentric groove or ward cut on the back of theshell, as shown by thefigure. This eccentricgroove is so located withreference to the centre ofrotation of the cylinderthat when the plug isturned, the longer armof the fence is forced toone side, the amount ofeccentricity being suffi-cient to firmly wedge andhold the plug, in case thefence should not be freeto move laterally. Whenthe key is inserted, ashoulder on it first pressesback a pin, U, whichworks in a slot so as toho
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Keywords: ., bookcentury1800, bookdecade1890, bookidbuildershard, bookyear1890
