. Appleton's dictionary of machines, mechanics, engine-work, and engineering. frame of the jacquard embrace the transverse beamsC C, and slide in them accurately, but freely. The jacquard-frame rests on two horizontal slides S S, which are adapted to slide on the transversebeams C C, the upper surfaces of each being formed with two inclined planes 11, one for each of thesides of the jacquard-frame to rest on, so that when these two slides are moved to the one side or theother, the entire jacquard-frame will be elevated or depressed relatively to the loom below, the stud-pinof the connecting pi
. Appleton's dictionary of machines, mechanics, engine-work, and engineering. frame of the jacquard embrace the transverse beamsC C, and slide in them accurately, but freely. The jacquard-frame rests on two horizontal slides S S, which are adapted to slide on the transversebeams C C, the upper surfaces of each being formed with two inclined planes 11, one for each of thesides of the jacquard-frame to rest on, so that when these two slides are moved to the one side or theother, the entire jacquard-frame will be elevated or depressed relatively to the loom below, the stud-pinof the connecting pinion n being at the same time adjusted in its sector-mortice to adjust the pitch-lineof the cogged geering. The slides S S are operated simultaneously by a hand-wheel u on a short arborv in front, which carries a worm w that engages the cogs of a wheel 1011a shaft y that carries twopinions z (only one shown in the figures) that engage the cogs of a rack a on each of the slides. For the purpose of adjustment, it is only necessary to turn the hand-wheel until the jacquard is. brought to the required position, and then to adjust the geering by shifting the stud-pin of the connectingpinion, the thread of the worm on the hand-wheel arbor and the inclination of the wedges being suffi-cient to retain the parts in a permanent position. The required motions of the trap-boards 6 andc, and the journals (/V/t/. are derived from thejacquard-shafts m, which, as described above, receive a continuous rotary motion from the driving shaft 302 LOOM, CARPET-WEAVING. of the loom below, and the proportions of the geering, as represented in the figures, should be such asto give to the jacquard-shaft one revolution for every two of the lathe-shaft of the loom. On each endof the jacquard-shaft m there are two cams K K and i i, which are all of the same form as representedin the figures. The cams K K are placed on opposite ends of the shaft, and in corresponding positionsto work the trap-board b, and th
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Keywords: ., bookcentury1800, booksubjectmechanicalengineering, bookyear1861
