The Mechanism of Weaving |
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Common terms and phrases
alternate picks antifriction barrel beam Bessbrook bolted bottom shaft bowl bracket cards catch centre chain cloth comber board connected connecting rod crank shaft crossing threads cylinder dents diameter dobby double lift doup driving eccentric Elevation employed equal fabric fixed flanges fork front fulcrum pin gear griffe groove harness heald shaft holes hooks horizontal inch Jacquard lappet wheel latter length lever lift line shaft loom loops machine mails move movement neck cords open shed ordinary pass pattern pegs pick picker piece pinion placed plate position prevent pull pulley punch n punches race board ratchet reed roller rotation round screw selvage shedding motion shuttle box side slay slide slot space spindle spiral spring spring box stationary straight strap stud taking-up tappet teeth tooth treadle twill twine upper vertical vibrating warp threads weaving weft weight wire
Popular passages
Page 11 - ... angles. 1 and 5, 2 and 6, 3 and 7, 4 and 8 are corresponding angles.
Page 272 - ... of the impossibility of accurately gauging the force required, and partly because the best of motors is liable to variations in speed. A shuttle must never be permitted to rebound after reaching a shuttle box, consequently swells are employed in such a manner that it has been affirmed that the force required to drive a shuttle into or out of a shuttle box is equal to that required for driving it through a shed. On this assumption, three times the actual power required for useful work is taken...
Page 272 - Experience has proved it to be uncertain in action, costly to keep in order, and by far the most dangerous part of the machine . . . When a shuttle is negatively driven, an enormous waste of power results, partly on account of the impossibility of accurately gauging the force required, and partly because the best of motors is liable to variations in speed. A shuttle must never be permitted to rebound after reaching a shuttle box, consequently swells are employed in such a manner that it has been...
Page 8 - ... them to be more costly without being more durable than ordinary healds. Other healds are made entirely of twisted wire, a small loop being left in the centre for the warp to pass through, and a longer one at each end for the reception of shafts, upon which they are loosely placed.