Patent GB-563858-A (GB)
Title: A beaming or warping machine
IPC: D02H3/00
Filed: 1942-07-24
Abstract: 563,858. Beaming-machines. LAMBACH, F. July 24, 1942, No. 10377. Convention date, Nov. 21, 1941. [Class 142 (iv)] In a beaming-machine in which the beam 4400 is driven by an electric motor 4600, the start switch 3820 for the motor is rendered operative by movement of a controlling lever 996 in one direction from its normal neutral position, and the stop switch 4140 is operated by movement of the lever 996 in the opposite direction from the neutral position. An inching switch 4900 may be operated so as first to be active and subsequently to be inactive in the movement of the lever 996 to the extreme active position for rendering the start switch operative. Spring loaded control elements 3821, 4141 of the start and stop switches are engaged by a cam 984 secured to a lever 986. The lever 986 is secured by a link 764 and lever 992 to the control lever 996. A spring loaded control'element 4910 of the inching switch 4900 engages a cam-shaped member 766 pivotally mounted upon the arm 986 and held by a spring 50 against a stop 54 projecting from the arm 766. Upon movement of the lever 996 in the direction C, the high portion of the cam 984 actuates the start switch 3820 and the cam member 766 is moved by the stop 54 first to render the inching switch 4900 active, and finally as the point E of the member 766 arrives beneath the spring-loaded element 3821 the switch 3820 is rendered inactive. Upon release, the control rod 996 is moved to neutral position by a spring 760 ; the start switch is opened, but since a motor start holding circuit is provided high speed operation of the beam continues. The inching switch is unaffected by the return movement since the spring 50 cannot move the cam member 766 until the point E of the member has moved lengthways along the element 4910 sufficiently to clear the element. Movement of the control lever 996 in the direction F from the neutral position causes the cam 984 to operate the stop switch. The beam 4400 is mounted upon supports 716 rotatably mounted on the cylindrical outer surface of the bearings 814 for the main shaft 702 so as to be swung into and out of operative position, and cams 858 are provided to engage rods 854 projecting from the ends of the beam, so that as the support 716 is swung into position a gear-wheel 714 secured to the beam is finally moved substantially radially into engagement with a driving wheel 712 upon the main shaft. A safety switch 650 mounted upon the machine frame work is operated by an abutment 736 upon the support 716 as the support arrives in operative position. The support 716 is locked in operative position by a bolt 866 and nut 882. The warp yarns 3400 from the creel 2400 pass through a reed 812 and around a measuring roller 768 to the beam, and a pressure roller 1320 is urged by a weight 742 into contact with the warp yarns upon the beam. Braking means are provided for the beam, the pressure roller and the measuring roller and are operated by a single torque motor 772 when the machine is stopped either by hand or automatically, either upon sufficient yarn being wound upon the beam or upon yarn breakage. To obtain substantially constant braking time for the beam irrespectively of the winding thereon, a resistance in circuit with the motor 772 is controlled by the pressure roller so that on increase of diameter of the winding upon the beam the resistance 658 is decreased and the output of the motor increased. The brakes for the measuring roller and the pressure roller are applied under spring pressure so that constant braking time is assured, the torque motor 772 serving to rotate a spreading device which normally holds the brake elements in inoperative position against the pressure of a spring or springs. The brakes are applied simultaneously, and a time relay may be provided to release the brakes after a predetermined interval. The motor 4600 may be shorted so that additional braking of the beam is obtained. The motor 4600 may be supported upon a pivoted member 818 so that a belt 704 forming part of the driving means from the motor to the main shaft. 702 is maintained in tension by the weight of the motor. The machine frame is mounted upon rollers 798 fixed upon spindles 800 rotated by a reversible motor 4800 so that the machine can be placed to register with different creels, and means are provided for adjusting the beam axially with respect to the pressure roller. The weight 742 subjects the winding upon the beam to a pressure varying according to the diameter of the winding, and compensating means including a spring 940 may be provided to obtain constant pressure. Specifications 563,857, [Group XXXVII], 563,882 and 563,883 are referred to.