Builder's hardware; a manual for architects, builders and house furnishers . ionwith the knob, and is threaded inside to screw over the application, the loose shank is screwed onto the spindle untiltwo dogs or teeth on the inner end of the shank are engaged inslots in the rose. The rose, which projects somewhat from theface of the door and has a milled-edge, then serves as a set-screw, drawing the two shanks together and binding againsta washer on the door, so that while the knobs can be rotatedfreely, the rose washer and consequently the shanks, will notwork loose. Figure 374 repre
Builder's hardware; a manual for architects, builders and house furnishers . ionwith the knob, and is threaded inside to screw over the application, the loose shank is screwed onto the spindle untiltwo dogs or teeth on the inner end of the shank are engaged inslots in the rose. The rose, which projects somewhat from theface of the door and has a milled-edge, then serves as a set-screw, drawing the two shanks together and binding againsta washer on the door, so that while the knobs can be rotatedfreely, the rose washer and consequently the shanks, will notwork loose. Figure 374 represents still another variety of screwless knob-fastening. The nut, C, forces the washer, B, against a shoulderinside of the shank, A, binding the latter firmly to therose and to the door. The knob is then slipped over the spin-dle, and the shank, A, screwed over the shank, D, until theknob is drawn up tightly. The only chance of the fastening Chapter XII. Hopkins & Dickinson. Screwless 2U BUILDERS HARDWARE. Chapter XII. Screwless Spindle. Swivel Screwless Fastening Knob Bardsley. working loose is by accidental turning of the shank, A, whichis not likely to occur. The Yale & Towne Manufacturing Company has a deviceillustrated byFig. 375 whichis on a very dif-ferent princi-ple from any ofthe foregoing,as it does notdepend uponscrews of any kind. In this case the knob-shank is cut out with an eccen-tric socket or bore. The ends of the spindle are turneddown to exactly the same contour as the bore of the shank;so that while the knobs on either side of the door can easily beslipped over the ends of the spindle, they can be fastened bysimply rotating them in opposite directions, when the finepitch of grade of the eccentrics causes a great pressure to beexerted, which results in binding the knobs rigidly to thespindle. This is the simplest form of knob attachment in themarket, and if properly applied, will always remain in order, though great caremust be taken
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