US1633477A

US1633477A - Stop and brake for twine machines

Info

Publication number: US1633477A
Application number: US144591A
Authority: US
Inventors: James B Crawford
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-10-27
Filing date: 1926-10-27
Publication date: 1927-06-21
Anticipated expiration: 1944-06-21

Description

1,633 477 June 1927' J. B. CRAWFORD STOP AND BRAKE FOR TWINS IIACHINES Filed Oct- 27. 1926 5 Sheets-Sheet 1 c]: lNVENTOR ATTOI'QNEY 1,6 ,4 June J. B. CRAWFORD 77 STOP AND BRAKE FOR TWINE MACHINES Filed Oct. 27, 1926 5 Sheets-Sheet 2 Q J 15. Urawf'ord INVEN roR ATTORNEY v 9 June 21, 1927. I J. BPCRAWFORD 633 477 STOP AND BRAKE FOR TWINE MACHINES Filed Oct. 27, 1926 5 Sheets-Sheet v3 ATTORNEY June 21, 1927. 1,633,47 7

.1. a. CRAWFORD STQP AND BRAKE FOR TWINE MACHINES Filed om. 27, 1926 v 5 Sheets-Sheet 4 J B. firawford INVENTOR ATTORNEY 1 2 June 9 7 .1. B. CRAWFORD STOP AND BRAKEFOR TWINE ACHINES 5 sheds-shut 5 Filed 001:. 27, 1926 Gran/ford IINVENTOR ATTORNEY Patented June 21, 1927.

NITE]; 5 s'rA'rias JAMES CRAWFQRD, OF BISMARCK, NORTH'DAKOTA.

STOP AND" BRAKE FOR TWINE MAGHINES;

- This invention relates-to improvements in spinners used in the manufacture ofbinder and- -other twine, the general object of the invention being to providemeans for stop ping the machine when the twine breaks, thus preventing the piling up of the fiber at the nipper so that the machinecan bequickly started up again after the attendanthas again connected the; fiber with the spool. 7

1o Another object of the invention 18 to'provide a brake for the flier which is applied at the same time the machine is stopped through the shifting of the belt from the fast pulley to the loose pulley.

L5 7 A further object ofthe invention to provide friction means on a pulley which is driven from the spool shaft so that when the spool ceases to rotate, the friction means will be returned to normal position by a .J spring, this return movement of the friction means acting to release a catch of a weighted member, the actuation of which by the weight will shift the belt to the loose and apply the brake. p 7

A further object of the invention is to-so arrange the friction means that it will act as a tension on the twine and thus keep the.

twine from ballooning.

This invention 'also consists in certain other features of construction and in the combination and arrangementof the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims. e

In describing my inventionin, detail, reference will be had to the accompanying drawings wherein like. characters denote like or correspondingparts throughout the sev- 4 eral views, and in which p V Figurel is an elevation of a spinning machine constructed in accordance with this invention', parts being broken away. p

Figure 2 is an end. view of the machine.

Figure 3 is a section on line 3-3 of Figure 1. r I

Figure 4 is a section on line 4-4 of Figare 1. Figure 5 is a detail sectional view through W the sliding shaft and its associated parts. Figure 6- is an elevation of the friction band. p I V V Figure 7 is an edge view of Figure'6. The drawings show a double-spinning machine, butit will, of course, be understood pulley Application filed October 27, 1926. Serial No. 144,591.

that the invention may be used on a single machine.

7 In these drawin s, 1 indicates a supporting frame in whic is journaled the pulley Shafts 2, each of which is provided with a fast pulley 3 and a loose pulley 4, a belt 5 engaging one or the other pulley of each set, the belt passing over av second pulley (not shown) and WlllCll may be driven in any (1esired. manner. Each shaft 2 is connected by the gears 6 with a shaft 7 journaled in the frame and a shipper rod 8 is provided for shifting each belt, the rods being slidably arranged at one end of the frame. Each rod is provided with a pair of fingers for engaging the belt so that the belt will be shifted from the. loose pulley to the fast pulley and vice versa, when the rod is shifted. 'A rock shaft 9 is journaled adjacent each side of the machine and each shaft is provided with an arm 10 for engaging a pair-of pins 11 on each shipper rod and each shaft'is also provided with weighted arms 12 which tends tohold the shaft 9 in a position which will cause its arm to actuatetheshipper rod to place the belt engaged by the said rod on the loose pulley of the drive shaft."

Each shaft? is connected by the endless chain 13 with the flier 14, the chain passing over the

sprockets

15 and 15, the latter sprocket being arranged on the hollow shaft 16 of the flier while the sprocket 15 is arranged on the shaft 7. The shaft 16 is journaled in a part 1 of the frame and the hollow shaft 17 which is connected with the bobbin or'spool 18 by the catch 19, passes through the hollow shaft 16 and is slidably mounted on the stationary shaft 19' supported in the frame. The shaft 17 is reciprocated in the usual manner from the shaft 20 having the'double spiral 21 thereon, through the sleeve 22 onv the said shaft 20 and having a part engaging the spiral and having an arm 23 which is connected with the hollow shaft 17 by its forked end engaging the groove 24 inone end of the said shaft. The shaft 20 is rotated from the shaft 7 through means of the shaft 25 and the gears 26.

It will thus be seen that when the parts are in operative position, the flier 14: will be rotated from the shaft 7 so as to spin the yarn or twine and as the twine is connected with the bobbin or spool, this rotary movement of the flier will be communicated to the spool and therefore to the hollow shaft 17 and as the said shaft is being rotated, it will also be reciprocated through the double spiral on the shaft 20 operating the collar 22 and arm 23 back and forth, as will be understood. This reciprocatory movement of the hollow shaft 17 will cause the twine to be evenly wound on the bobbin. It will, of course, be understood that the arrangement at the other side of the frame is similar to' the just described arrangement and as this construction is well known, it will not be described in detail.

In carrying out my invention, I place a pulley 27 on each hollow shaft, the pulley being connected to the shaft by a key 28 engaging akeyway 29 inthe shaft so that the pulley can rotate with the shaft and the shaft can slide through the pulley. The pulley'has its hollow shaft journaled in a part 1 of the frame. A brake band surrounds each pulley 27 and has a suitable lining 31 thereon. A rod 32 passes through the bent ends of each band and is connected with the lower end by the nuts The rod also passes through a bracket 34: formmg part of the frame and carries a coiled spring 35 which presses the upper end of the hand against the bracket as its upper end engages a nut 36 on the upper end of the rod.

An l.'-shaped link 37 has an eye engaging the rod 32 to which it is connected by one of the nuts 33 and this link engages a rod 38 which is connected to the tail end of a trigger lever 39 which is designed to engage an arm 40 on one of the shafts 9 to hold the said shaft in a position with its weighted arm in raised position and with the belt engaged by the shifter associated with the said shaft on the fast pulley. The other brake band 30 has a bracket 41 attached to about the center ofthe band and a rod 42 is connected with the bracket and to an equalizer lever 13 pivoted to the frame and which has its other end connected by a rod 44 with a. trigger lever 39 which engages the arm 40 of the second shaft 9. As long as each pulley is rotating, this frictional. engagement with the brake band will cause the brake band to turn until stopped by its engagement with a part of the bracket when the band will remain in this position so that the

trigger

39 or 39 will be held in operative position engaging the

arm

40 or 10" so that each shaft 9 will be held with its weighted arm in'raised position. As soon as the pulley stops, however, the spring 35 will return the brake band to its normal position, with its upper end resting upon the bracket 34, which will act to move the trigger to releasing position so that the arm 40 will be free of the trigger and the weighted arm 12 can rock the shaft 9 to cause it to shift the belt to the loose pulley and thus bring the device to rest. Thus if the twine should break, the bobbin or spool will cease to operate so that the friction pulley 27 would also cease to operate and thus the device would be automatically stopped by the shifting of the belt from the fast pulley to the loose pulley. I a r The movement of each shaft 9 also acts to throw on a brake .45. on each flier 14: as the brake member is connected by a link 4:6 with a small arm 17 oiieach shaft 9 in such a manner that as the shaft 9 is rotated by the downward movement of its weighted arm,- the link 46 will be pushed forwardly so as to apply the brake 15. The brakeis guided in its movement by means of a bent rod 48 pivoted to a part of the frame and having its horizontal part passing through a depending part of the brake 4:5,a' spring 19 on the said guide acting to apply the brake to a part of the flier. Y

By this invention, the apparatus will be automatically stopped and the flier braked as soon as the twine breaks through the stoppage of the bobbin and its frictionpulley so that the feeding of. the fiber ceases and there is no danger of it piling u at the n'ipper which would cause considerab e labor and waste in the fiber in starting up the machine again. This automatic stop and brake willcall the operators attention to the fact that the machine'hasstopped and that the thread needs repairing, as if the machine continued to operate. with the twine broken, it might be some time before the operator would noticethat the twine was broken. 1

The friction means also acts as a tension on the twine and keeps the twine from ballooning between the flier buttons.

g It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.

4 I desire it to be understood that I may make changes in the construction and in the V combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

WVhat I claim is 1. In a' twine forming machine of the class described, a brake for the flier thereof, shipper means for the belt" thereof, means operable by the stoppage ofthe bobbin thereof for applying the brake and'causing the shipper to shift the belt tothe loose pulley, said means comprising a pulley on the bobbin shaft, a brake band engagingthe pulley and adapted to be lifted by the rotary movement of the pulley, spring-means for resisting the lifting movement, a weighted shaft for operating the brake and the shipper and means for holding the said shaft with itsweight in raised position as long as the band is in raised position,

2. In a twine forming machine of the class described, a brake f\ r the'fiier thereof, shipper means for the belt thereof, means operable by the stoppage of the bobbin with its weight in raised position as long as thereof for applying the brake and causing the band is in raised position, such means the ship-per to shift the belt to the loose pulcomprising a trigger connected with the ley, said meanscomprising a-pulley on the band and moved into holding position by 5 bobbin shaft, a brake band engaging the the upward movement of the said band and 15 pulley and adapted to be lifted by the roan arm on the weighted shaft engaged by tary movement of the pulley, spring means the trigger. 1 i

for resisting the lifting movement, a weight In testimony whereof I aflix my signature. ed shaft for operating the brake and the 10 shipper, means for holding the said shaft JAMES B. CRAWFORD.