Bois d'œuvre, sa fabrication et sa distribution . en tant qu'appareil de direction à quatre roues qui permet à l'oibt de tourner un angle droit en roulant sur une distance de 8 pieds. Le lumberis est placé sur deux traversins de 3 x 8 pouces par 42 pouces espacés de 7 pieds et 2 pouces, du centre au centre. Ces traversins sont relevés du sol par TRANSPORT AUTOUR DE L'USINE 145 blocs de 4 à 6 pouces placés sous eux, les extrémités de la traverse projet-ing 3 pouces au-delà des blocs.1 Chaque machine est équipée de quatre crochets de transport, les extrémités sont capturées sous les projectiles du rembourrage et servent de moyen pour soulever l'unité

• Contributeur: The Reading Room / Alamy Banque D'Images
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• Dimensions: 2128 x 1175 px | 36 x 19,9 cm | 14,2 x 7,8 inches | 150dpi

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Lumber, its manufacture and distribution . as a four-wheel steering apparatus which enables itto turn a right angle in traveling a distance of 8 feet. The lumberis placed on two 3- by 8-inch by 42-inch bolsters spaced 7 feet and 2inches, center to center. These bolsters are raised from the floor by TRANSPORTATION ABOUT THE PLANT 145 4- by 6-inch blocks placed under them, the ends of the bolster project-ing 3 inches beyond the blocks.1 Each machine is equipped with fourcarrying hooks, the ends of which are caught under the projectingends of the bolster and serve as a means for raising the unit from orlowering it to the floor. The lumber is piled on the bolsters at the assorting table in units4 feet high and 3 feet wide. The carrier drives over the load andthe carrying hooks are lowered and caught under the ends of the bolster.The load is then raised by a power hoist, and carried to its destina-tion. It can carry pieces from 8 to 100 feet in length and has an aver-age capacity of 2200 board feet of 16-foot rough stock. A machine. Fig. 110.—The Method of piling Lumber on Bolsters for handling with a Surface Lumber Carrier of the Ross Type. of this type can handle the assorting table output of a mill cuttingfrom 80, 000 to 100, 000 board feet per day. A similar machine driven by a gasoline engine mounted on top ofthe frame is now on the market. It will handle units 42 inches wide, and 52 inches high and will carry a load of 8 tons. It is equipped witha friction drive and has a maximum carrying speed of 15 miles perhour. A surface carrier that handles loaded lumber buggies was developedon the Pacific Coast several years ago, but it has not been adoptedas extensively as the unit package type. Monorail System. A monorail system is used to transfer lumber from the assortingtable to the storage yards; from the assorting table at the dry kilnsto the rough dry sheds; from the yards and sheds to the planer and car;and also from various parts of the plant to vessel docks. 1 See F

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