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 142
The slots in channel are required for the rising and falling ofthe pins as the gate opens and closes. The diagonal bars inlarge gates of this pattern may be of channel or small anglebars placed back to back. BOX SLIDES. 123 191. Box Slides—are used for sliding boxed goods fromsidewalk to lower… … z< P- 1 .. L ! ! , . J l u i_: 3 X 3 X f-inch angle irons. The distance D between theseangles, as shown in the section in plate, being the effectivewidth of the slide, can be made any width to accommodateopening on sidewalk and size of boxes requiring handling. At 124 ARCHITECTURAL IRON AND…
Building, Iron and steel
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