Kidder, Frank E. (Frank Eugene), 1859-1905, Nolan, Thomas, 1857-1926 · New York : W.T. Comstock · leaf 535
ail grooves, forprotective use on stairs, landings and inclined floorings, or whereveraccidents from sliping are possible. The tread is made in plates, X ^^^ thick, and in different widths,and is intended to be either placed upon the surface of treads andlandings, or sunk in a recess, as may be… … APPLIED TO WOOD STAIRS.Fig. 537- The combination of a hard metal to resist wear, and a soft sub-stance to prevent slipping, gives, we believe, the most perfect surface THE MASON SAFETY TREAD. 522^ for the purpose that has as yet been devised, and the great extent towhich it has been used, during…
Building
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