US1602159A

US1602159A - Unwinding device

Info

Publication number: US1602159A
Application number: US79741A
Authority: US
Inventors: Joyce James Daniel
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-01-07
Filing date: 1926-01-07
Publication date: 1926-10-05
Anticipated expiration: 1943-10-05

Description

Oct..A 5 19265 J- D. JOYCE- UNWINDING DEVICE Filed Jan. '7. 1926 2 Sheets 5heei l Oct. 5 1926.

J.A D. JOYCE UNWINDING DEVICE 2 Sheets-snee"` 2 Filed Jan. 7, 1926 flexible brake band Patented @et 5, 1926.

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JAMES DAIEL JOYCE, OF PHILADELPHIA, PENNSYLVANIA.

n UNWINDING DEVICE.

Application filed January 7, 1926.

rlhis invention relates to unwinding devices for regulating the delivery of yarn, thread, and the like from rotating spools or bobbins.

lt is the prime object of my invention to control the rotation of the spool or bobbin in such a manner as to compensate for the shock of the starting of thev winding operation and for the series of irregular variations in speed of feeding due to the travers ing of the thread guide and vdue to the variations in diameter of thecone of yarn or thread being wound on the bobbin; and to prevent the spool from overrunning when the thread breaks or the tension thereon is relieved for any reason; so that fine or delicate materials can be unwound at high speeds without undue strain or breakage.

ln accomplishing these results it is my purpose to employ a flexible compensating arm forming one end of a coiled spring rotatably and adjustably mounted on al suitable rod and having a portion of said coiled spring formed to provide a suspension for a adapted to contact with a brake drum on the spool holder.

Other objects of my invention will be found in the accompanying specification and claims and will be disclosed in the accompanying drawings in which:

Figure 1 is a perspective view of my device; y

Figure 2 is a side elevation of my device with the movable parts shown also in dotted f lines.

Referring with greater particularity to the drawings it will be seen that my device is comprised as follows: j

A substantially U-shaped frame 1 having arms l and 5 is provided with al plate 2 havingan aperture 3 for the reception of means to secure said frame in position on the winding machine in connection with which it is to be used. Recesses 6 and 7 in the arms i and` 5 are adapted to receive and to provide bearings for the ends of spool holder 8. Extending upwardly from the juncture of the arm l with the main portion of the frame 1 is an arm 9 bored at 10 to provide for the reception of a rod 11 which is fixed therein.

Mounted on the rod 11 and spaced from the bore 10 by a collar 12 is a coiled spring 13 of flexible steel wire. One end of said spring is extended to form a compensator arm 14. bent adjacent its end to form a bearof the band 19 Serial No. 79,741.

ing for a rotatable thread guide or pulley 15. The other end of the spring 13 is fit-- ted into a collar 16 mounted on the rod 11 and adapted to be adjusted in its position on said rod by means of a set screw 17. lntermediate of its ends the spring 13 hasja portion thereof lextending outwardly therefrom and then bent to form a loop 18 parallel to the rod 11. This loop extends over to a position adjacent the arm'9 and above the spoolholder 8. A brake band 19 of flexible material is secured at one end to the loop and at its other end hasvsecured theretoa weight 20.

A stop 21 fixed to the arm 9 is bent above and parallel to the rod 11 to provide a stop for the arm 14 in its upward motion. The spool holder 8 is provided with a brake drum 22 against which the band 19 is adapted to bear. n

My device having been described in de# tail its operation will be seen to be as follows:

The collar 16 is the spring to the proper of thread being used.

It will be noted that, when the arm1ll is against the stop 21, a considerable portion rst adjusted to tension degree for the type and that since the loop end 18 extends out over the drum a strong braking force isv applied to the drum. This braking force prevents any overrunning of the spool when the draft on the thread is released as when the winding reaches the smaller'. end of the cone. When the winding reaches the larger end of the cone being wound, the amount of thread being wound will be greater and the draft on the thread will bend the compensator arm downwardly moving the loop downwardly to a proportionate amount and releasing the portion of the brake band from contact with the drum thereby decreasing the braking effect thereof and preventing the breakage of the. thread under the sudden increase in draft.

I claim-'- 1. In combination, in an unwinding device, a frame, a rotatable spool holder mounted in said frame and having a brake drum rotatable therewith, a compensator rod mounted in said frame, a coil spring mounted on and adjustably secured to said rod, one end of said coil spring terminating in a compensator arm and thread guide, a flexible brake band, a portion of said coil spring intere' bears against the drum 22 Cfr mediate of its ends being adapted to movablyp'support said brake band in position to Contact VWith said brake drinn 2. In combination, in an unwindihg device, a frame, a rotatable spool holder mounted in said frame and having a brake drum rotatable therewith, a compensztt'or rod mounted in said frame, a eoilnspring` mounted on and adjustably secure-d t'o said rod, one end of said Coil spring terminating in a compensator arm and thread guide, a flexible brake band, a portion of said coil spring intermediate of its ends being adapted to mo'vably support said brake ,band in position lto Contact with said brake drum, the movement of said compensator arm being adapted to vary the degree of Contact of said brake bandivith said brake drum.

V3. In combination, in anunivindingvdevice, a frame, 4a rotatable yspool holder mounted in said frame yand having a brake drum rotatable therewith, 4a yCompensator rod mounted in said frame, a coil springmount ed on and adjustably secured to said rod,

lin said frame, a 'adjustably secured to one end of said coil spring terminating in a compensator arm and thread guide, a flexiblebrake band, a portion of said coil spring intermediate oi its ends being formed in a loop adapted to'support said brakeband in position to Contact With said brake drum.

"4. In combination, in an unwinding device, a frame, a rotatable spool holder mounted in said frame and having a brake drum rotatable therewith, a compensator rod'mounted coil spring mounted on and said rod, one en d of said coil spring terminating in a ,compensator arm Aand thread guide, a flexible brake band, a portion of said coil spring intermediate of its ends being formed in a loop adapted to support said Vbrake band in position to Contact Withs'aid brakedrum, and a stop to limit the upward movement of said compensator arm. Y A x v In testimony whereof I atliX my signature.

.TAMESWDANIEL Joven.