Tappet and dobby looms : their mechanism and management (1912)
Roberts, Thomas · Manchester [Greater Manchester] : Emmott & Co., Ltd. · leaf 185
ever H to lower theconnecting rod and the shield, and as the latter is with- 174 TAPPET AND DOBBY LOOMS drawn, more of the teeth in the ratchet wheel are exposedto the catches. Similarly, with any slackening of thewarp the back-rest is drawn in the opposite direction,raising the rod J and… … being duplicated and operating alternately, the warp islet off more regularly and in smaller quantities, whilstthe shield, and not the catches, only being operated fromthe back-rest, the motion is more sensitive in its action.A more recent addition to this class of let-off motionsis a type in which…
Looms
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