Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 394
slot, and Cthe screw; this arrangement allows movement with the screw slidingon the washer. WTien it is necessary to use screws in finished surfaces, the treat-ment should be exactly the reverse of that governing the use of nails. 318 HARDWARE There are many forms of screws on the market, with… … £3 Fig. 6. Typical Forms of Screws. fact, driving them three-quarters of the way in—should not beallowed; a screw with a battered head or not driven in straight, dis-figures the work; when started by the hammer, one or both of theseconditions generally prevail.
Architecture · Building
Internet Archive · Kelly Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
