US1535573A - Yarn-winding machine - Google Patents

Description

April 28; 1925.

. 1,535,573 J. J. CANNON YARN WINDING MACHINE I Filed March l0. 1922 2 Sheets-Sheet 1 pnl J. J. CANNON YARN WINDING MACHINE Filed March 10, 1922 2 Sheets-Sheet 2 WA a, WM

PatentedApr. 23. 1925..

\ JOHN JAMES cannon, or LEICESTER, ENGLAND.

YAan-wnvnrne MACHINE Application filed March 10, 1922. Serial No. 542,611.

To all whom it mag concern:

Be it known that I, JOHN JAMns CANNON, a subject of the King of Great Britain, -residing at Leicester, in the county of Leices ter, England, have invented new and useful Improvements in or Relating, to Y arulVinding Machines, of which the following is a specification.

This invention relates to yarn-winding machines and concerns those of the vertical spindle type wherein the yarn is built up on bobbins in a series of cones. v

In machines of this class the yarn guide has imparted to it a vertical traverse and as the cones are built up one upon another, the guide is correspondingly moved to a higher position.

The guide works up a screwed rod mounted upon a bar to which an up and down motion is imparted, and it has long been the practice to obtain the upward movement of the yarn guide by means of a disc or feed cup rotatable on the screwed rod and having a milled periphery which, by contact with the wound yarn, has caused the disc to rotate and adjust its position in an upward direction on the rod.

The proper feeding i. e. upward movement, of the yarn guide on the screwed rod is dependent upon the frictional contact between the disc and the wound yarn, and as the quality and tightness of the latter varies, the actuation of the disc is not by any means constant or regular and on this account theyarn is not always built up with that degree of regularity which is desirable.

To overcome this ditliculty mechanical means have been adopted for positively raising the yarn' guide in coujlmction with the traverse, and. a stop motion has been ar ranged. to automatically stop said. mechanical means upon the yarn breaking, or the bobbin being stopped. i

The present invention has reference to means of this character wherein the nut device carrying the yarn guide is moved up on thcscrewcd rod by means of ratchet mechanism theefiective operation of which is con trolled by the yarn.

.According to the invention, the screwed rod is rotatable and actuated by a ratchet shown in Figure 5 mechanism on the rising and falling carrier In further describing the invention reference will be made to the accompanying drawings in which Figure 1 is a plan of a convenient form of the improved mechanism constituting an example of the invention.

Figure 2 is a side elevation of the same. Figure 3 is a front view. of part of the mechanism.

Figure 4: is an underside view of the parts Figure 5 shows the ratchet device in vertical section on the line 5 5 of Figure 4.

Figure 6 is a sectional plan taken on the line 66 of Figure 2.

Figure 7 is an elevation, anc a Figure 8 is a plan of a modified form of mechanism covered by the invention.

Figures 1 and 2 are drawn to a smaller scale than the remaining figures, and throughout the drawings like parts are designated by the same reference characters. Referring to Figures 1 to 6, the screwed rod 1 is rotatably mounted ina bearing 2 attached to the carrier bar 3 and has fixed upon its lower end a ratchet wheel 4:. A lever 5 mounted to oscillate on the lower part of the rod 1 above the ratchet wheel 4 carries a spring controlled pawl 6 which.

9 attachedto the stationary bed or table 10 of the machine. This movement of the lever takes place against the action of the spring -7 and imparts apart rotation to the ratchet wheel 4 and screwed rod 1.

To prevent back movement of the ratchct wheel after the latter has been advanced and when, upon the carrier bar 3 rising,

the lever 5 is moved in the reverse direction b its s rin 7 a aawl 11 is arran ed J b 1 D as shown in Figure t and operated by a spring 11 to engage the ratchet wheel. This pawl is attached to the lower end of a cranked rod 12 against which the spring 1.1 bears.

The yarn guide 13 is attached to a nut device 1-1 which engages the threads of the rod 1 and, as the latter is intermittently rotated, moves up the same. The nut device preferably has a spring 15 (Figures 52 and 6) to engage the threads so that disconnection may be readily etlected for moving the device up or down on the rod by hand. To prevent rotation of the nut device on the rod, a projecting part 16 thereo'l" engages and works up and down a vertical rod 17 fixed on the carrier bar 3 and disposed parallel to the screwed rod 1.

The nut device 14 also carries a pivoted arm 18 havinga yarn guide 19 thereon. This guide 19 when engaged by the running yarn indicated at 20 in Figures 2 and 6 is held, by the tension of the latter, in a raised position so that a pin 21 thereon is clear of the beforementioned cranked rod 12. The said rod 12 is mounted at its upper and lower ends so as to be capable of turning, and the arrangementis such, that upon breakage of or an end in the running yarn, or the stoppage of the winding spindle and bobbin, the guide 19 is released and tails so that its pin 21, as the arm 18 moves down, presses against the crankcd'rod 12 and turns samethereliy disengaging the pawl. 11 from the ratchet wheel 41:. llpon this taking place, the ratchet. wheel, being unchecked against backward movement, is actuated both forward and backward by the oscillating lever 5 and therefore merely oscillates the screwed rod 1 through a small arc and does not raise the nut device.

It to be understood that the teeth of the ratchet. wheel 5 are so formed and the actuating pawl (3 is so arranged and controlled by its spring 22 that there will be sutlicient engagement: between the two for the wheel to be drawn back by the pawl when backward motion is peanitted in the manner described. Upon the yarn being restored, the guide 19 is lifted by the tension of the yarn, the spring 11. acts upon the rod and brings the pawl 11 into engagement with the ratchet wheel. 4 and the upward teed ot the nut device 1 1 continues when the carrier bar 3 rises and falls.

In the construction shown the movable yarn guide 19 is actuated by gravity, but alternatively, may be actuated by a spring. In any case, when the cranked rod 12 is turned by the action of the ratchet teeth passing theback-stop pawl 11 during the advance movement, the pin 21 drops into position tolock the said rod and prevent the back-stop pawl dropping back into the teeth of the ratchet wheel.

The yarn guides 13 and 19 may be made of glass or porcelain or be rotatable or otherwise formed to reduce friction at the part engaged by the yarn. For engaging with the inclined edge 8 ot the member U the oscillating lever 5 may be fitted with a roller (not shown).

In order to Vary the extent oi the engagement of the lever 5 with the incline 8 there is provided on the inside oi the member 5) an upright guide .13 (Figures 1 and 2) the base 2% of which is arranged to turn on a pivot screw The upright guide 23 may be advanced or retarded along the inclined edge 8 by a push rod which is held in position after adjustinent by a screw binding device 27 attached to the bed or table 10. During part of its upward and downward travel the lever rides against the adjacent side of the guide 23 and during the ren'iaining part or its travel it rides on the inclined edge. Adjustment ot the guide 23 in the manner described increases and decreases period of contact of the lever 5 with the inclined edge and consequently the amount of oscillating movement imparted to said lever may be varied. This enables the amount of feed or rise imparted to the nut device at each traverse to be varied in accordance with the requirements of the particular yarn being wound.

In Figure 1 the winding spindle is indicated at The projecting part 16 ot the nut device is littcd with a knot detector Qt) ol known form.

In the moditied construction shown in, Figures 7 and 8 the oscillating lever 5 is arranged iuidcrncath the ratchet wheel l; on the lower end ot the screwed rod 1 and is actuated. in both directions by the engagement of a roller 30 thereon with an inclined slotted plate 31 attached to a bracket secured on the bed or table 10. As the carrier bar 3 rises and talls relatively to the table 10, the roller 30 travels up and down in the slot 33. 13v slackening the nut 3 1 the inclination of the slotted plate 31 may be varied by hand thereby varying the amount ot oscillation imparted to the lever. lVith this arrangement the spring for moving the lever in one direction can be eliminated. The other parts of the mecha nism are the same as already described.

What I claim then is 1. In a yarn winding machine of the vertical spindle type, in combination, a rising and falling carrier bar, a screwed rod rotatable thereon, a nut device n'iovcd up on said rod when the latter is rotated, a yarn guide carried by said nut device, a ratchet wheel fast on the screwed rod, a lever mounted to oscillate on the screwed rod, a pawl on said lever engaging the ratchet wheel, a fixed cam to oscillate the lever during movement of the carrier bar, a pawl to prevent backward rotation of the ratchet wheel, a pivoted arm on the nut device said arm being controlled by the yarn, and a connection between said arm and last mentioned pawl, whereby, upon release of the arm by the yarn the said pawl isv disengaged from the ratchet wheel to stop rotation oi the screwed rod.

2. In a yarn winding machine of the vertical. spindle type, in combination, a rising and falling carrier bar, a vertical screwed rod rotatable thereon, a nut device moved. up on said rod when the latter is rotated, a yarn guide carried by said nut device, a ratchet wheel fast on the screwed rod, a lever mounted to oscillate on the screwed rod, a pawlon said lever engaging the ratchetwheel, a fixed cam to oscillate the lever during movement of the carrier bar, a pivoted cranked rod, a pawl on the and of said rod adapted to prevent backward rotation of the ratchet wheel, a spring controlling said rod, and a pivoted arm on the nut device said arm beingnormally con trolled by the yarn, and upon release by theyarn actuating the cranked rod to disengage the last mentioned pawl from the ratchet wheel to stop rotation of the pawl on said lever engaging the ratchet wheel to drive same, a stationary adjustable inclined cam with which the lever makes contact and by which it is oscillated during movement of the carrier bar, a vertical pivoted cranked rod, a pawl on the end thereof adapted to prevent backward rotation of the ratchet wheel, a spring controle ling said rod, and a pivoted arm on the nut device said arm being normally controlled by the yarn and upon release thereby actuating the cranked rod to disengage the last mentioned pawl from the ratchet wheel to stop rotation of the screwed rod.

In testimony whereof I have signed my name to this specification.

JOHN JAMES CANNON.

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