Patent GB-190109495-A (GB)
Title: Improvements in Twisting-in Machines.
Inventor: KREY WILLIAM EDWARD
Filed: 1901-05-07
Granted: 1901-07-13
Abstract: 9495. Krey, W. E., and Duppler, A. May 7. Loom warp threads, twisting- in.-A machine for twisting-in new warps on to the ends of the old ones in the operation of weaving, is preferably mounted upon a carriage n<4>, which can be moved along guide-rods o' by means of a ratchet-wheel r<4> and pawl s', carried by an oscillating lever t' actuated by a cam v<4> on the main shaft e of the machine. This main shaft is mounted within standards b, c, of which the standard b is hollow for the purpose of containing parts of the driving- mechanism. Parallel to the shaft e is a shaft n, which is rotated by gearing from the main shaft ; a spiral r, with secondary spiral s, is secured to a shaft q, which is pivoted to the shaft n and can be turned out of the way when required. The twisting-mechanism comprises a fixed shaft u carrying an arc-shaped pad v, and a revolving pad z secured to the bent end a' of a shaft b<1>, which is removably mounted in standards b, c, and normally pressed outwards by means of a spring. The shaft b<1> is driven from the main shaft by means of gearing q<1>, r<1>, p<1>. Une end of the pad z carries two threadcutting blades, and the opposite end is provided with a deflector d' adapted to force the united threads from the face of the pad, should they tend to adhere thereto. A curved bar or fork e' is carried by a longitudinally-reciprocating bar d<2>, which is actuated by means of an oscillating lever f<2> and cam h<2>, mounted on the main shaft. Hook bars n' have their rear portions p<2> connected to a plate m<2> forming part of a carriage k<2>, which is reciprocated by means of the cam h<2>; the hookbars are journalled in thimbles in the standard b, and are connected by gearing adapted to rotate the bars intermittently. A vertically-reciprocating bar d<3> carries two parallel rods or thread-guides e<3>, which travel between other rods or thread-guides f removably attached to the standards. The clamps for the warp ends, each clamp comprising three members pivoted together, are carried by levers pivoted to the arms a<4> of a carriage which travels along guide-ways y<3> forming part of a support attached to the bar d<3>. Before the machine is started, corresponding portions of each warp are arranged over one of the rods f<3>, under the adjacent rod e', and beneath the fork e', and pass to the clamps, where they are secured. During the operation of the machine, the carriage n<4> travels along the guide-rods o<4>, and the threads in each warp are separated, one by one, by means of the hook bars n<2>, and are then deflected by the spirals r, s into the path of the twisting-mechanism. The rest of the threads are held back by a finger c', carried by a shaft t<1> actuated by means of a crank u<1> and link v<1> connected to the wheel r<1>. The warp threads may be brushed, before being clamped, by rotary brushes n<5>. While the machine is moving along the guide-rods o<4>, the clamp-carrying carriage is moved in the opposite direction, so as to keep the clamps and warps relatively stationary, by means of a shaft w<3> and gearing z<4>, x<4>, w<4>. In a modified form of machine, the rod e<3> and the spirals are replaced by other equivalents, the fork e' is modified, and a tapering spreader is employed instead of the finger c<2>. Spring hooks, secured to the clamp-carrying carriage, may be employed for holding the threads. Preferably, the guide-rods o' are mounted in a special frame to which the old warp, together with its harness and reed, is removed from the loom before twisting-in. This frame may be made in two tubular sections adjustably connected and provided with adjustable supports for the twisting-in mechanism.