Patent GB-189813269-A (GB)
Title: Improvements in Looms for Weaving.
Filed: 1898-06-14
Granted: 1898-07-16
Abstract: 13,269. Lake, H. H., [Universal Loom Co.]. June 14. Vertical looms.- The improvements are shown and described as applied to a single vertical loom, but may be used independently. The warp E passes from the warp roll D over whip rolls E<1>, E<2> and through the horizontally - moving healds G, G<1> and verticallymoving lay H<1> to the fell I, and the cloth passes over the yielding breast beam d and the take-up roller T to the cloth roll e. Stop - motions.- (a) The warp stopmotion comprises a series of pins P suspended on the warp between the whip rolls E<1>, E<2> above a horizontally - reciprocating frame 0. When a pin drops, it actuates a.feeler blade O<2> on the shaft O<1> and releases a pivoted catch into position to operate a lever O<8> for releasing the trip lever N, which holds the belt - stripper K<1> in its operative position against the action of a spring K<2>. (b) The weft stopmotion comprises a weft fork R mounted upon a pivoted lever R', which releases the trip lever N by means of the slotted rod connection R'. (c) The shuttle stop-motion comprises a pivoted dog U, so arranged on the lay H<1> that, when the shuttle fails to box, the nose of the dog comes into contact with the end U<3> of the lever U<4> and by means of a pin U<8> on the connecting-rod U<5> releases the trip lever N. The stop-motions are arranged to act at predetermined stages in the revolution of the lay-driving shaft. The loom may also be stopped by means of a handle N<2> on the trip lever. Warp tension, regulating; back bearers, rails, or rests.-The whip rolls E<1>, E<2> are mounted upon a frame a on a rock-shaft a', and the roll E<1> is carried by levers a<4> which are acted upon at their upper ends a<5> by springs a<6> to give a moderate yielding tension to the warp between the two rolls. When the shuttle stop-motion comes into operation, a connecting-rod rocks the shaft U<7> and causes the teeth U<9> to release the end of the frame a and allow it to rock upon the shaft a<1>, and thus slacken the warp sufficiently to prevent breakage of the threads by the shuttle in the shed. Brake mechanism.-When either of the stop-motions comes into action, an arm L<4> on the hub L<2> of the starting-lever L allows a spring M<1> to put a brake strap M<2> into contact with its brake-wheel M' on the driving-shaft J. The brake can be held out of action, when working the loom by hand, by means of a hand-lever Q<2>, which also, by means of a link Q<3>, sets the warp stop-motion in its operative position. Let-off motions.-The rope f for applying tension has one end fastened to the frame and the other to a drum f<1>, which is operated to provide the required amount of tension to the rope by a pawl f<3> on a weighted bell-crank lever f<4>. Shedding-motions.-The healds G, G<1> are operated by two systems of levers, b<1>, b<3>, b<4> and c<1>, c<3>, c<4> respectively, from grooved cams b<5>, c<5>, and their throw is made adjustable by forming the shorter arms of the bell-crank levers b<1>, c' with slots b<2>, c<2>. Breast beams.-The beam d is mounted by arms d<1> on a rock-shaft d<2>, and is pressed downwards against stops d<4> by a torsional spring on the shaft. Take-up motions.-The take-up roll T is operated by a pawl S<8> on a bell-crank lever S<7>, which is oscillated by a connecting-rod S<6>, bell-crank lever S<2>, and connecting-rod S<3> from a crank-pin S<4>. When the lever R<1> is brought into action to stop the loom, an arm T<6> upon it lifts the weighted arm T<5> of the stop-pawl T<3> and leaves the take-up roll free to turn backward. Cloth beams.-The trunnions e' of the cloth roll e bear upon steeply-inclined guide-rails e<2> of sufficient length to permit the formation of a roll containing at least 1,200 yards of cloth.