US2449267A

US2449267A - Ring spinning frame

Info

Publication number: US2449267A
Application number: US771413A
Authority: US
Inventors: Harold S Adams
Original assignee: AMERICAN WOOLEN Co
Current assignee: AMERICAN WOOLEN Co
Priority date: 1947-08-30
Filing date: 1947-08-30
Publication date: 1948-09-14
Anticipated expiration: 1965-09-14

Description

Sept. 14, 1948. H. s. ADAMS 2,449,267

RING SPINNING FRAME I Filed Aug. 30, 1947 3 Sheets-Sheet 1 'INvEN-|-c1 RI HAROLD 5. Ana/-16 Sept. 14, 1948. s, ADAMS 2,449,267

RING SPINNING FRAME Filed Aug. 30, 1947 Y 3 Sheets-Sheet 2 TLQZ INVENIDR:

HAROLD .5. HDHMS QMQMFW Sept. 14, 1948.

H. s. ADAMS RING SPINNING FRAME Filed Aug. 30, 1947 3 Sheets-Sheet 3 I NVEN+EI R:

HflROLD ,5. Hon/vs Patented Sept. 14, 1948 n-ING sPrNNINcrnAM-Es Harold 'S. Adams, Skowhe American Woolen Com gang Maine, ass ignor .to

a corporation of Massachusetts Application August 30, 194%;i1SerialiNb; 7.713413:

. 1 i My invention has to do with stop motions for rling spinning machine Inth ring spinning of yarn,- the yarn is wound on bobbins in a succession of conical layers produced. by successive traverses of the builder motion which after each traverse lowers the spindle rail a little. In yarn packages of this type it is also common to finish the package with a transfer end which comprises four to six turns of yarn extending. from the top to the bottom of the package. This transfer end furnishes a convenient means for tying on another end of yarn. The winding of the transfer end is accomplished by. the builder motion which raises the spindle rail at a rapid rate to its starting point immediately after the bobbin has been filled. It is. necessary to have the machine positively stop upon the completion of the winding of the transfer end.

Heretofore, the spinning has been stopped on the completion of the packageeither by the operator throwing the main switch by hand at the proper moment, or by a limit switch which is operated by an adjustable element carried by the spindle rail when the spindle rail reaches its starting point after the winding of the transfer end." When the stopping is done by hand the operatonout of caution, usually stops the machine before the bobbins are completely filled, so that bobbins which are only partly filled. are produced, thus losing a partof the capacity of the bobbin and of the machine and increasing the labor cost. When a limit switch is employed to stop the machine it has been found that its operating element, carried by the spindle rail, requires constant adjustment to operate effectively at the proper time under varying conditions such, for one example, as changes in spindle speed. When improperly adjusted the machine fails to' stop with the result that layers of yarn are wound over the already completed package around its transfer and and these layers otyarn must be stripped off by hand with a substantial loss of labor and material.

The object of my present invention is, therefore, to provide a mechanism which will automatically stop the machine at the exact moment when the package is complete and will not overrun and start to wind again until the operator again sets the machine in motion. In the following specification I have described my invention as embodied in a ring spinning frame of the well known type in which the spindle rail is traversed by a heart cam up and down once for each conical pair of layers of yarn on the bobbin and in whichthere is mechanism which progressively; lowers the spindle rail the entire length of the bobbin. and then raises this rail rapidly to put on the few turns of yarn. forming the transfer end. It will be understood that, ex-

5 Claims.

cent as specifically stated... the inventiongis, not limited: tohaiparticular type of builder motion... since it may be -used inconnection with ma:- chines of othertypes. i i a In: the drawingsgi l 3 Fig. 1 isa front elevationrot one end of -a:=spin*- ning f rame equipped with apparatus embodying my invention and shown partly in diagram; ,Fig. 2 isasection taken onthe line 2-2 of.Fig. l with the builder motion shown partly broken away;

Fig. 3 is a section taken on Fig. 1; i Fig. 4 is. a plan viewof the builder motion partly in section onthe line 4-4 of Fig. 2 p i i Fig. 5 is a section taken on theline 5-5 of Fig. 2.; e p

Fig. 6 is a wiring diagram; Fig. '7- is a. completed packagev showing the transfer end; and

Fig. 8 is a similar package, such as is produced when the machineis prematurely. stopped.

Referring now to the drawings and particularly to Figs. 1 and 2, the spindle rail is shown at [4 and the. ring. rail at.;| 5. The bobbins are indicated. at It and the: spindles at H. A properly'comp'leted bobbin is shown in Fig. 7.. The yarn package of this bobbin comprises a series of conical layers which are produced in the well known manner by lowering the spindle rail slightlyafter each traverse. Thetransfer end con-- sisting of from fouritosixturns of yarnextending from the top to the bottom of the bobbin isshown at it. a

Theibuilder. motion is of. well knownconstruce the line pa -s or tion, and, therefore, only. the essential partslof it will be described. At F is shown the swinging builder frame carrying various parts. A heart cam 32.on-=shaft;3l which makes one revolution for each traverse raises and lowers the spindle rail. The heart cam. carriesa pin [00. which strikes an. arm ml of the bell crank lever hence for .each revolution. of the heart cam. shaft 3L Theother arm 192 of. the bell crank lever is connected by a link I83 to the pivoted arm m4 .car rying a pawl [05 which engages a ratchet wheel I06 on the outer end of a. shaft I lll. The shaft llll'isv journalled in hearings in the builderframe F and carries at its inner end one element 108 of a dog clutch H19. The other element ill) ofthe clutch I09 is slidably secured to one endof a shaft HI also journalled in'bearingsin the builder :frame F. slidably secured to the other end of the shaft lll'. is .one element N2 of a dog clutch H3. The other element H4 of the clutch H3 is secured to one-end of a shaft H5 also journalled in hearings in the builder frame F. Secured. to-the other end of the shafti l li isle; bevel gear H6 which meshes witha bevel gear'l-l'l. .Also meshing-with the bevelgear H lis a bevel gear 3 which is driven by the motor M through a Worm I I9 and a worm gear I20. Beneath the clutches I09 and H3 is a slide rod I2I carrying forks I22 which engage the slidable elements H and H2 respectively of said clutches.

Secured to the shaft III is a worm I30 which meshes with a worm wheel I3I carried-by a shaft I32. The shaft I32 is received in bearings arranged crosswise of the builder frame above the shaft I I I. Secured to the inner end of the shaft I32 is a chain pulley I33 to which a chain I34 is attached. The builder motion, through the chain I34 operates the spindle rail in well known manner. Secured to the outer end of the shaft I32 is a disk I40 to which dogs MI and I42 are adjustably attached. Located in the path of said dogs is one arm of a lever I45 which is pivotally mounted beneath the shaft I32. The other arm of the lever I45 carries a pin I46 which i received in the groove of a member I'41 secured to the slide rod I2I previously referred to.

:It will thus be apparent that the heart cam 32 not only produces the traverses but, through the clutch I09, imparts intermittent motion to the shaft I32 and chain pulley I33 whereby the spindle rail is lowered step-by-step to adance the traverses and thus build the body of yarn on the bobbins.

At the same time the disk I40 is intermittently rotated to move the dog I M step-by-step until it engages the lever I45 and turns it on its pivot to disengage the clutch I09 and engage the clutch II3. Thereafter the chain pulley I33 is driven in the opposite direction and at a higher rate of speed to return the spindle rail to its starting point. Just before the spindle rail reaches its starting point, the dog I42 carried by the disk I40 (now travelling in the opposite direction) engages the lever I45 to disengage the clutch II3 andreengage" the clutch I09 to complete the cycle. It will be apparent that the location of the dog I4I on the disk I40 determines the point at which the downward movement of the spindle rail willbe stopped and consequently the number of layers of yarn which will be applied to the bobbins and, therefore, the size of the packages. The mechanism so far described is old and well known in the art.

The motor M which drives the machine is in a power circuit P which is completed by its uxiliary circuit located in the starting box E. A fmomentary-contact starting switch S in the auxiliary circuit is operated by the control rod 41 through cranks 48 and a link 49 (Figs. 2 and 3). The auxiliary circuit also includes a normally-open contactor 9, anoper'ating coil therefor indicated at I0 and a one-button inch-stop control station H which is provided with contacts a normally closed by a button I2 and contacts b'which are normally open. 7

In addition there is a control circuit (see particularly Fig. 6) which is supplied with current from a transformer T. In this circuit are two switches designated No. I and No. 2 each of which is held. normally open by a spring I0. Switch No. I is mounted on the builder frame F in the path of a: cam I which is carried by the lever I45 (see particularly Fig. 4). I is closed automatically when the lever I45 is moved on completion of winding the main body of yarn on the bobbin. This switch may also be-closed manually by a hand rod to which is connected to the lever I45 from which it extends toward the front of the machine. Switch No. 2 is closed by a-cam 85 which is adjustably Thus switch No.

4 secured to the shaft 3I on which the heart cam 32 is mounted.

There are also two relays RI and R2 in the control circuit. The relay RI has two pairs of contacts A and B both of which are in the control circuit and are normally open. The relay R2 has one pair of contacts D which are in the auxiliary circuit of the power circuit and are normally closed.

The coil as of relay RI is connected by wire 40 with one side of the transformer T and by wire 4|, switch No. I (when closed) and wire 42 with the other side of the transformer. A wire 25 connects the wire M with one of the contacts B while the other contact B is connected by wires 2'! and 23 with the wire 42-. A warning signal such as a horn S5 is wired in parallel with the coil of relay Rd. The coil 65 of relay R2 is connected by wires 46 and 43 with one side of the transformer and by wire 44, switch No. 2 (when closed), wire 45, contacts A of relay B! (when closed) wire 23 and wire 42 with the other side of the transformer.

In operation, the machine is first adjusted to provide the proper speed for the particular size of yarn to be spun, and the dog I4] positioned on the disk Mil to produce a yarn body of the required size on the bobbin. A yarn end is then pinched between each bobbin and the base of the spindle upon which it rests. The control rod 4'! is then turned in a clockwise direction as viewed in Fig. 2 to momentarily close the start ing switch S. This energizes the coil II] which closes the contactor 9 after which, with thestart ing switch S open, the current flows through the wire I, c-ontactor 9, wire 2, the normally-closed contacts a in the control station H, wire 4, coil I0, wire 5, the normally-closed contacts D of relay R2 and wire 6 to complete theauxiliary circuit of the power circuit P and start the motor M.

Four to six windings are immediately wound on the lower ends of the bobbins. These windings, indicated at H, Figs. 7 and 8, constitute the lower transfer ends. The first layer of yarn is then wound as the spindle rail is lowered when the heart cam 32 turns through VAs rotation of the heart cam continues the spindle rail is then lifted while the second layer of yarn is wound to complete the first traverse. During this action the pin l00 carried by the heart cam32 operates the bell crank it which moves the lever I04 and the pawl I65 carried thereby to rotate the ratchet I33 (see particularly Figs. 2 and 5). This imparts a rotative movement to the shaft I01 which, through the clutch I09 (Figs. 2 and 4), worm I35 and worm wheel I3I rotates the chain pulley I33 in the directionindi-cated'i'n: Fig. 2 to permit the spindle rail to drop slighl'y' in order to advance the next traverse. This processcontinues until the dog I M engages'tl'iev lever I45 and causes the latter to disengagethe clutch 50S and engage the clutch II3.. This motion of the lever I45 also causes the cam I5 carried thereby to close switch No. I and energize the coil as ofrelay RI which is connected by wire 40 to one side .of the transformer T and by wire 4 I, switch No. i and wire 42 to the other side of the transformer. This closes the contacts A andBeftherelayRi.

The clutch H3 connects the chain pulley I33 with the shaft I I5 by which it is now driven at a higher rate of speed in the opposite direction to return the spindle rail to its starting point. During this operation the upper transfer ends t2 are applied to the packages. Just before thespindle rail reaches its starting point the dog I42 engages the lever lit and begins to move the latter in the opposite direction to disengage the clutch I I3 and reengage the clutch Hi9. This permits switch No, l to reopen without deenergizing relay RI the contacts A and B of which still remain closed because the coil fill of this relay will still be connected on one side with the transformer 'I through wire ti] and on the other side through wire 4|, wire 26, contacts B and

wires

27,, 23 and 42. At a predetermined point in the remaining portion of the operative cycle the cam 3-5 closes switch No. 2 and energizes the coil 65 of rela R2 which is connected by

wires

40 and 43 with one side of the transformer and by wire M, switch N o. 2, wire 45, contacts A of relay Ri (now closed), wire 23 and wire 42 with the other side of transformer. This opens contacts D of rela R2 to open the auxiliary circuit and thus break the power circuit to stop the machine. When the auxiliary circuit is broken. as described, the voltage is entirely removed from the control circuit. This permits the contacts D of relay R2 to close again. However the contactor 9 of the auxiliary circuit is also opened at this time and this circuit cannot be closed again until the control rod 41 is operated to close the starting switch S as previously described. Thereafter the mome'm.

tum of the parts moves the spindle rail to its starting point, or approximately so, disengages the clutch H3 and reengages the clutch IE9 to complete the operative cycle.

If it is necessary, for any reason, to stop the machine before the control circuit operates, this may be done by depressing the push button i2 to open the contacts a in the control station H. If it is desired to inch the machin (i. e. rotate the parts to a limited extent) for the purpose of making adjustments or for other reasons, the push button 12 is pressed inwardly to close the contacts b which will complete the power circuit and keep the motor running until the button it is released.

The control circuit, as above described, is fully automatic in its operation after the bobbins are completely filled as shown in Fig. 7. It may also be operated when the bobbins are only partially wound if it has been decided to dofi the bobbins at this point because the order is filled, because a different yarn is to be added (a difierent yarn is tied to the transfer end it of each partially completed package) or for other reasons. To this end the operator pulls the hand rod 86 (Figs. 2 and 4) and thus moves the lever Hi5 and consequently the cam to disengage the clutch I09 and close switch No. l in the control circuit. The control circuit then operates as previously described to stop the machine after a partially completed bobbin, such as is shown in Fig. 8, has been produced.

I claim.

1. In a ring spinning frame having a builder motion which traverses the ring rail and the spindle rail with respect to each other, the combination therewith of a power circuit, a control circuit, a relay having normally closed contacts in the power circuit and controlled by current in the control circuit, two normally open switches in the control circuit, mechanism which closes the first of said switches at a predetermined position of the spindle rail, and mechanism which closes the second of said switches after the closing of the first switch, the closing of both of said switches occurring during the last traverse of the spindle rail.

2. In a ring spinning frame having a builder motion in which a rotating member traverses the ring rail and the spindle rail with respect to each other, the combination therewith of a cam on said rotating member, a power circuit, a control circuit, a relay having normally closed contacts in the power circuit and controlled by current in the control circuit, two normally open switches in the control circuit, and mechanism which closes the first of said switches at a predetermined. position of the spindle rail, the second of said switches being closed by said cam after the closing of the first switch, and the closing of both of said switches occurring during the last traverse of the spindle rail.

3. In a ring spinning frame having a builder motion which traverses the ring rail and the spindle rail with respect to each other, the combination therewith of a power circuit, a control circuit, a relay having normally closed contacts in the power circuit and controlled by current in the control circuit, and two normally open switches in the control circuit, one of which is closed in the course of the last traverse of the spindle rail, and the other of which is closed at a predetermined point in the remainin portion of said last traverse.

4. In a ring spinning frame having a builder motion which traverses the ring rail and the spindle rail with respect to each other to wind a package of yarn on a bobbin and thereafter gives the spindle rail one complete movement the full length of the bobbin, the combination therewith of a power circuit, a control circuit, a relay having normally closed contacts in the power circuit and controlled by current in the control circuit, two normally open switches in the control circuit, actuating mechanism for one of said switches comprising a cam which rotates once for each traverse, and actuating mechanism for th other of said switches including a member which makes a complete movement once during each movement of the spindle rail the full length of the bobbin, the first of said switches being closed by said member at a predetermined position of the spindle rail and the second of said switches bein closed after the closing of the first switch. the closing of both switches occurring during the last traverse of the spindle rail,

5. In a ring spinning frame having a builder motion which traverses the ring rail and the spindle rail with respect to each other to wind yarn on a bobbin and in which a movable element connects the spindle rail with driving mechanism whereby the spindle rail is given one complete movement the full extent of that part of the bobbin covered by the yarn so wound, the combination therewith of a cam operated by said movable element, a power circuit, a control circuit, a relay having normally closed contacts in the power circuit and controlled by current in the control circuit, and two normally open switches in the control circuit, the first of said switches being closed by said cam and the second of said switches being closed to complete the control circuit and open the power circuit in the remaining portion of the traverse during which the first switch is closed.

HAROLD S. ADAMS.