. Bulletin of the Department of Agriculture. Agriculture; Agriculture. LOGGING IN THE DOUGLAS FIE REGION. 159 1 9 by 10 inch three-drum loading engine $2,825 1 set of guy lines 100 1 main loading line 140 1 trip loading line * 100 1 spotting line 45 2 double-sheave blocks 120 2 single-sheave blocks 63 Loading engine, repair parts, and materials 75 Loading engine, sled 250 Oil-burner equipment, including oil-and-water tank 375 Miscellaneous equipment 100 Total 4,193 Note.—The statement includes operating equipment as well as equipment on hand. In many cases two sets of crotch lines, a spre
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. LOGGING IN THE DOUGLAS FIE REGION. 159 1 9 by 10 inch three-drum loading engine $2,825 1 set of guy lines 100 1 main loading line 140 1 trip loading line * 100 1 spotting line 45 2 double-sheave blocks 120 2 single-sheave blocks 63 Loading engine, repair parts, and materials 75 Loading engine, sled 250 Oil-burner equipment, including oil-and-water tank 375 Miscellaneous equipment 100 Total 4,193 Note.—The statement includes operating equipment as well as equipment on hand. In many cases two sets of crotch lines, a spreader, and a set of load- ing lines (figs. -63 and 64) are used instead of one set of crotch lines, CO/fUSfi BLOCK. Fig. 64.—Overhead loading system. the spreader giving the engineer much better control of the log when it is in the air than the unmodified crotch line device (fig. 61), because it checks the tendency of the log to swing back and forth several times before it can be lowered to its position on the car. The spreader is about 12 feet long and is made of 45-pound railroad iron. The crotch lines are attached to the ends of the spreader by means of l^-inch clevises, the crotch of the upper or hoisting set being about 8 feet from the spreader, the crotch of the trip set about 10 feet from the spreader. The loading lines are about 18 feet long, which is ample for logs up to 40 feet in length. Attachments are used for longer logs. This device increases the fixed investment about $50. With this system the landing place can be made very wide, some- times 150 or 200 feet, since few or no landing improvements are necessary. No yarding time is lost because of blocked-up landings; 100,000 feet or more of logs can be stored, so that the yarding crew can continue at work after the loading crew has been forced to stop. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and
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