Architectural iron and steel, and its application in the construction of buildings ... specifications of ironwork ... tables selected expressly for this work ... by Wm. H. Birkmire (1905)
Birkmire, Wm. H. (William Harvey), 1860-1924 · New York, J. Wiley · leaf 117
SECTION A-S A resting block in the shape of a triangle is secured to thesidewalk, for each door to rest against when open ; and a•g-inch-diameter bar, turned down at each end, resting in an eyeriveted to the frame, holds the door open at an angle of 75degrees. 98 ARCHITECTURAL IRON AND STEEL. 153.… … Cast ironshutter eye LATCH No. 16 to No. 20 gauge (No. 16 being the heaviest), andriveted to the frames with y^-inch-diameter rivets, placed at DOORS AND SHUTTERS. 99 four to six inches (between centres) apart. The heads on insideof frame are flattened and filed off smooth. If the opening is flush…
Building, Iron and steel
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