Tappet and dobby looms : their mechanism and management (1912)
Roberts, Thomas · Manchester [Greater Manchester] : Emmott & Co., Ltd. · leaf 184
ratchetwheel in the upper right-hand diagram; and a side eleva-tion of the shield and ratchet wheel in the lower right-hand diagram. It will be observed that the movement of the catches is SHIELD LET-OFF MOTION 173 a reciprocating one; and without any interposition of theshield they would engage… … Fig. 49. its action is governed by the movement of the back-restG. Any movement of the back-rest is transmitted throughthe medium of the lever H and the rod J to the shield,which, as already indicated, is influenced by the varia-tion in the tension on the warp. If the tension is in-creased, the…
Looms
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