Patent GB-952796-A (GB)
Title: Device for stopping the spindles of spinning machines
IPC: D01H7/22
Filed: 1962-08-08
Abstract: 952,796. Belt-gearing; band-brakes; clutch controls. SPINDELFABRIK SUSSEN, SCHURR, STAHLECKER & GRILL G.m.b.H. Aug. 8, 1962 [Aug. 12, 1961], No. 30396/62. Headings F2E, F2L and F2Q. [Also in Division D1] A device for stopping the rotation of one of the spindles of a spinning &c. machine which are driven by individual tapes, comprises means for lifting the tape off the corresponding drive pulley on a common drive-shaft and for then exerting a braking-action on the belt and thus on the spindle and an operator-actuated part for operating the belt-lifting and brake means, which part is carried by a member guided directly by or supported in, the spindle housing. In Fig. 1, a housing with a hinged front 6 is secured to the spindle rail. A foot lever 9 passes through and is guided by the edges of a slot 12 in a fixed part 6<SP>1</SP> of the housing and is connected by a spring 8 and link 7 to a member 1 carrying a projection 1<SP>1</SP>. When the lever is depressed, the member 1 rotates about a pivot 4 against the action of a spring 5 so that the projection 1<SP>1</SP> is moved to engage and lift the tape 2 off the drive pulley 3 and, by increasing the tension in the belt, brake the spindle. Various means are provided for holding the parts in braking position. In Fig. 1 there is a detent 11 co-operating with the edges of slot 12; in Fig. 3, there is a recessed slot 213 in a downward extension 26<SP>11</SP> of the housing and the foot lever 9 has a pedal shaped as shown so that the lever can be moved into or out of the recess by putting the foot on one side or the other of the pedal. In Fig. 5, there is a pivoted pawl 518 with a catch 519, the pawl being caused to engage the slot in the housing when the operator puts his toe against a part 520, a spring, or the distribution of weight about the pivot, ensuing its release when the lever is slightly depressed. In a similar form, the pawl is spring-urged towards locking position and is released by the toe. Various means are described for preventing the brake mechanism from being overloaded. In Fig. 1, the spring 8 is not extended until excessive pressure is applied to the pedal. In Fig. 4, the pedal is connected to the braking member as shown, a spring 48 adjustable at 47<SP>11</SP> and 47111 urging the pedal upwardly and an adjustable stop 416 being provided. In Fig. 7, not shown, the pedal member is S-shaped, the top arm of the S being pivoted to the housing and connected to the member 1 while the lower arm forms the pedal, an adjustable stop being provided between the bottom face of the upper arm and the upper face of the base of the housing. In Figs. 9, 9a (not shown), the link 7 is replaced by a cable which is shortened to apply the brake by forming a loop in it by operating a push-rod by a pivoted plate or a knob, or by winding part of it up on a roller rotated by a similarly operated rack or roller. Where the spindle rail is traversed, a foot rod is provided in front of the pedal so that the operator's foot is always properly positioned relatively to the pedal, Fig. 8 (not shown). In Figs. 10-12 (not shown), the arrangement is such that the foot slides off the pedal when it is pressed too hard; in Fig. 11 (not shown), the pedal is pivotable against the pressure of a spring which is compressed for the pedal to tilt as an indication to the operator as soon as the pressure is excessive.