Builder's hardware; a manual for architects, builders and house furnishers . Fig. 369. Screwless Door-knob and Escutcheoncombined. P. &c F. Corbin. in either direction. Another form of knobsubstitutes a continuousratchet on one face ofthe spindle for the screw-holes of the commonform. These knobs aremade by the BostonKnob Company, andoutwardly appear likean ordinary knob. Theadvantage is that theknob can be adjustedat any point without theaid of washers, the screwcatching onto the ratch-et in any position of theshank. Figure 369 shows aform which does awaywith the screws key escut
Builder's hardware; a manual for architects, builders and house furnishers . Fig. 369. Screwless Door-knob and Escutcheoncombined. P. &c F. Corbin. in either direction. Another form of knobsubstitutes a continuousratchet on one face ofthe spindle for the screw-holes of the commonform. These knobs aremade by the BostonKnob Company, andoutwardly appear likean ordinary knob. Theadvantage is that theknob can be adjustedat any point without theaid of washers, the screwcatching onto the ratch-et in any position of theshank. Figure 369 shows aform which does awaywith the screws key escutcheon andthe rose are combined ina single plate on eachside of the door. Insideof the rose is a hubwhich is cut with ascrew-thread. The spin-dle passes through thisand into the shank of theknob, which is cut witha thread correspondingwith the thread on thehub. In applying thisknobs are simply screwed on until they bearthe edges of the rose. The escutcheon-plates Chapter Fig. 370. Screwless Door-knob and Escutcheoncombined. Russell & Erwin. fixture theslightly onare then screwed together through the door as shown on Screwless & Er- win. 242 B UILDERS HA RD WARE. Chapter xii. the drawing. As the spindle passes through the latch it willreadily be seen that the knob cannot be unscrewed except byremoving the escutcheon-plates, and as these plates bear oneach side of the door above and below the lock, it is almostimpossible to bring any strain on the lock-plate itself. Figure 370 is a somewhat similar form as regards theescutcheon-plates. The knob, however, is attached by means of
Size: 1485px × 1683px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookidbuildershard, bookyear1890
