Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 400
of all obstructions or fold back on themselves,as with inside blinds. Where the swing is from horizontal bearings, the pins shouldalways be fixed.—that is, so made that they cannot be removed. Inan upright position gravity holds them in place; but when put hori-zontally, the swinging of the sash… … Cheap Type of SpringButt. 325 14 HAKfDWARE appliances properly classed under this head designed for special service, such as spring Indts and double-acting buffs. Spring Butts. Spring butts are those in which a spring is placed so as to force the door closed when not held open by some other force.…
Architecture · Building
Internet Archive · Kelly Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
