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 119
able for closing storefronts, warehouses, goods sheds, staircase openings, elevatoropenings, and in many cases where protection from fire andthieves is desired. The shutters are made of steel, corrugatedand riveted together, forming a firm and unbroken surface.They can be made self-coiling up to… … ELEVATION friction in the iron grooves. These grooves are made ofiron channel bars \\ X i\ X % thick. 160. The Noiseless Shutter—consists in the applicationof strips of leather to the edge, which are woven throughmortises in the steel, forming a protection to the parts thatwork in the grooves, and…
Building, Iron and steel
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