Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 417
r the loose-pin type. Anexamination will show that there are always two bearings on eachfive-knuckled butt, so that if there are three butts to a door there arealways six bearing points; and when the weight of the door is con-sidered, with the fact that all this weight is carried from one side,the… … 342 HARDWARE 11 washers (Fig. lo) be-tween the knuckles, totake up the worn por-tions. Wrought - steel buttscan be had in plain ma-terial and fair worlonan-ship, 4 by 4 inches, aslow as SI.30 a dozenpairs, with screws; andfrom that up to $7.00a dozen fitted withball bearings andbronze-plated. The…
Architecture · Building · Carpentry
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