American School (Chicago, Ill.), Nelson, H. William (Hector William), b. 1869 · Chicago : The School · leaf 73
189 uneven cloth.) Fig. 94 shows very clearly the whole motion ; the upper spring K, is the one which is changed to obtain the dif- ferent tensions on the warp, by loosening the small set collar and compressing the spring. In this way more tension is added to the warp, while the opposite will… … Fig. 95. Friction and Gear Let-Off. moved an equal distance to the opposite side. The compression on the lower short spring K^, (which counterbalances the oscilla- tion of the whip roll and the rebound of the top spring) is gov- erned by the stoutness of the top spring. The diagram gives a veiy…
Weaving
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