. Bulletin of the Department of Agriculture. Agriculture; Agriculture. LOGGING IN THE DOUGLAS FIR REGION". 155 another. There is no disagreement, however, as to what in a general way constitutes a proper method, since all agree that it should be adapted to the conditions; that it should facilitate and not delay yarding; and that it should do the w^ork at a minimum cost. PARBUCKLE Fig. 60.—Common type of deck landing Logging jacks in connection with skids or landings were first used to load logs in the region. This method, being slow, was soon super- seded by the parbuckle me


. Bulletin of the Department of Agriculture. Agriculture; Agriculture. LOGGING IN THE DOUGLAS FIR REGION". 155 another. There is no disagreement, however, as to what in a general way constitutes a proper method, since all agree that it should be adapted to the conditions; that it should facilitate and not delay yarding; and that it should do the w^ork at a minimum cost. PARBUCKLE Fig. 60.—Common type of deck landing Logging jacks in connection with skids or landings were first used to load logs in the region. This method, being slow, was soon super- seded by the parbuckle method, which resembles the cross-haul method of the East. The parbuckle method is still extensive- ly used in the Grays Har- bor countr3^ One hun- dred thousand feet of timber per day can be loaded satisfactorily with it where the logs average 2 or 3 feet in diameter and 40 feet in length. It requires a more elaborate and costly landing than other loading methods. A gin pole is erected on the side of the track opposite to the land- ing, to which a single sheave loading block is attached about 30 feet from the ground. The loading line, leading from the drum that furnishes the power, passes through the loading block, then around the logs to be loaded, and thence over the car to the base of the gin pole where it is hooked. When the power is exerted on the line the log is rolled from the landing to the car. SINGLE GIN-POLE METHOD. In many cases the loading rig consists of a single gin pole about 60 feet in height, a main loading line, crotch lines, and hooks, tongs, or slings, the power being furnished by a loading drum on the read- ing or yarding engine or by the main drum of a separate loading engine (fig. 60). The gin pole is erected on the side of the track opposite the landing and just far enough from the track to permit the passage of cars, and with the top, or the part to which the rigging is hung, over the center of the track. A 1-inch main load- ing line, leading from the


Size: 1671px × 1495px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookauth, bookcentury1900, bookdecade1910, booksubjectagriculture