Rudiments of the art of building : represented in five sections [...] for the use of architects, builders, draghtsmen, machinists, engineers and mechanics (1853)
Bullock, John · New York : Stringer & Townsend · leaf 124
dewith a mould cut to the requiredshape, and afterwards works offthe stone between these draughts,by a straight edge applied atright angles to them (fig. 81).The formation of conical orspherical surfaces is much less simple, and require a know-ledge of the scientific operations of stone-cutting, a… … 120 RUDIMENTS OF THE . In working soft stones, the surface is brought to a smoothface with the drag, which is a plate of steel, indented on theedge like the teeth of a saw, to take off the marks of thetools employed in shaping it. The harder and more coarsely grained stones are generallytooled,…
Building
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