Patent GB-189921104-A (GB)
Title: Improvements Appertaining to Spinning and Twisting Machinery used in the Production of Yarns or Threads of Fibrous Substances.
Inventor: BAILEY ISAAC
Filed: 1899-10-23
Granted: 1900-10-23
Abstract: 21,104. Bailey, I., and Wright, I. H. Oct. 23. Doffing-arrangements for flyer and cap spinning and twisting machines. Fig. 1 shows the invention applied to a flyer frame. The bobbins having been filled, the spindles are raised to their highest position by means of a rack-and-pinion arrangement c, c', and the flyers are held by spring arms h<2> carried by a horizontally-movable rail h operated by a hand-lever h<6>. The flyers are now released from the spindles by the longitudinal movement of a rod x operated by a screw and hand-wheel, the bar x carrying projections x<1>, which engage with projections x<2> on a boss x<3> on the spindle. The spindles are then unscrewed from the flyers by any suitable means. Clips e<1> carrying the empty bobbins f are mounted on a rail e, which is suspended by chains g operated by worm gearing and a hand-wheel, and can be raised and lowered by reason of the blocks e<2> sliding on the rods f<6>. The rail can also be moved backwards and forwards by the system of levers f<2>, f<5>. The flyers having been unscrewed, the spindle rail is lowered so that the full bobbins are left standing on the lifting- rail k<3>, when the rail e. having been adjusted to the proper level, is moved forward so as to displace the full bobbins on the rail k<3> and cause them tu fall into the trough e<3>. The spindle rail is now raised so as to pass the spindles through the apertures in the empty bobbins and to engage them again with the flyers, and the rails e and h are drawn backwards into the positions shown. A small quantity of thread is caused by any suitable means to be wrapped round the empty bobbins before starting, and, in order to sever the threads, the bobbins in the trough or receptacle e<3> are prevented from rotating by means of a heavy chain e<4> carried by lever arms e<5>. In the case of cap frames, a modified arrangement of levers is described for carrying and operating the rail e, which may also carry suitable supports projecting horizontally forwards for supporting the full bobbins during the descent of the spindle rail. Notches are made in the caps in which engage spring arms similar to h<2>, and an additional rail is provided carrying hooks, which can be caused to project between the caps when held in the spring arms and the upper ends of the spindles or bobbins, the spindle rail being vertically movable as in the flyer frame. The rail carrying the hooks is mounted in such a manner that, by operating a handle, it can be moved parallel to itself in a circular path, and so cause the hooks to wind the threads once or oftener round the empty bobbins. Fig. 8 shows an arrangement whereby the lifting-rail k<4> of a cap frame is caused to move vertically with the spindle rail a, when the latter is moved upwards or downwards for doffing purposes, and yet is enabled to reciprocate in the ordinary manner for winding purposes while the spindle rail is stationary. The feet s of the lifting-pokers s<1> are connected by chains r with the rail a, the chains r passing over the pulleys r<1>, r<2>, r<3> as shown. The pulley r<2> is carried by the reciprocating rail t', which is operated by a rack-and-pinion arrangement and a chain w<1> from the horizontally-moving and wellknown screwed shaft w.