Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 303
nd operated by means of an endless chain, bevel-gearand shaft through the wall. Continued on Next Page THE KINNEAK MANUFACTURING COMPANY 232 STEEL ROLLING DOORS, SHUTTERS, ETC. These two cuts represent the concave and convex sides of the interlocking steel slats, of which theKinnear Doors and… … CONCWE AND CONVEX SIDES OF THE INTERLOCKING STEEL SL.ATS
Building materials
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