Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 440
should always be remembered inits selection. As a general rule, all bolts operated by a sunken thumb-piece(Fig. 51) should be avoided, for, if they stick—and they generallydo—very little power can be exerted by the end of a thumb. Thereare many lever and knob devices which permit the direct… … Fig. 50. Comiuon Type of Bolt with Keeper-Strap. The rod on a bolt should be tapered at the end, as the two parts rarelycome exactly together so as to permit the rod to enter the keepers;if it tapers, it wall, as it enters, draw the door to its proper position.For drop-front drawers in linen…
Architecture · Building · Carpentry
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