Engineering and Contracting . timber24 ft. long, and at the free end, B. there •is attached a single or double wdiiffletree,as described. The arrangement at the fixedend, A. is somewhat more complex and at the other end to the hook holt hj. Thehorse is then turned and driven in the op-posite direction, putting a further strain onthe pulling chain and slacking the chain Kso that it can be shortened and hooked upagain when the horse has moved the sweepto the position shown by the left hand setof dotted lines. The horse is then startedon its forward trip, then back again, andso on, pulling altern
Engineering and Contracting . timber24 ft. long, and at the free end, B. there •is attached a single or double wdiiffletree,as described. The arrangement at the fixedend, A. is somewhat more complex and at the other end to the hook holt hj. Thehorse is then turned and driven in the op-posite direction, putting a further strain onthe pulling chain and slacking the chain Kso that it can be shortened and hooked upagain when the horse has moved the sweepto the position shown by the left hand setof dotted lines. The horse is then startedon its forward trip, then back again, andso on, pulling alternately on chains K and Fig. 2—Tripod Stump Puller. is necessary. Very large stumps can be pulled withthis simple device and a team of horses. From the figures giveti it is evident thatheavy chains and cables must be used orelse there will be frequent breaks. One set up of the machine can be used topull a large number of stumps, since it isnecessary to move only the comparativelylight .^ frame. With a long cable, tn give a. Fig. 3—Sketch Showing Rig for may well be described in detail, .\bout 3ft. from the end is an eyebolt, 1. to whichis fastened an anchoring chain attached toa convenient stump or dead man, P. Oneach side of the eyebolt, and almost 4 it are attached hookbolts, h, and h=,and still further away two similar bolts, h-,h<. The stump pulling wire cable is fas-tened to a short chain, K, and then carriedo\ei- on A from F aiid attached to a stump Log Skidding System, as Devised by the C. Ki and putting, ultimately, an enonnnusstrain on the stump. idea of the power exerted is gainedfrom the following brief calculation. Ifthe distance between the king bolt of thewhiffletree and the bolt 1 is 20 ft,, and ifhi and hj are 4 in. ( 1-3 ft,) from I, the pullof the horse is multiplied 3X20 = 60times, .\ horse capable of pulling 500 lbs,would then put a strain of 500X60 = 30,- S. Flory Mfg. Co., Bangor, Pa. good reach to the machine, there should beused take ups l
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherchicago, bookyear19
