Fig. 213.
LOG SLIDE AT A MILL IN SOUTHERN GEORGIA.
The dogs are released and the log is given a half turn on the carriage by means of a steam “canter.” The side from which the slab and boards were sawed is placed against the knees—the standards or uprights of the carriage—and the log again dogged. The opposite slab and a few more boards are sawed off after which the log is given a quarter turn and all but a few boards taken off.
A half turn of the log and the final sawings are made.
A series of “live” rolls—rolls which revolve in one direction—carry off the boards. The rough edged boards, which constitute about one-third of the whole number, are held by stops and finished on saws called edgers.
The boards are now passed on to a trimmer or jump saw and cut to standard lengths. Timbers are trimmed to length by a butting saw. Slabs are sawed to a length of four feet one inch on a slasher. These slabs are sawed into laths, pickets, or blocks the length of a shingle, called shingle bolts. From these bolts shingles are sawed.
123. Quarter Sawing.
—[Fig. 215] shows a common way of sawing “quarter sawed” lumber.
Fig. 215.