Merrill, George P. · John Wiley & Sons, Chapman & Hall, Ltd., · leaf 485
od workman by the old hand process would formerly cutfrom 5 to 10 feet; that is, a groove one foot deep and from 5to 10 feet long per day. For this he would receive from 25 to30 cents per foot.* Another machine for doing the same work as that just de-scribed is the Saunders channelling machine… … The cutting tool isattached rigidly to thepiston, so that theblow is dealt directlyby the steam pressurein the cylinder andwithout the interven-tion of any cranks,levers, or springs. (2)^ The cutting tools aremade adjustable at anyangle—to the right,left, forward, or back-ward. The machineis thus…
Decoration and ornament, Architectural · Quarries and quarrying · Building stones
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