US1633646A

US1633646A - Yieldable giveway for weft-replenishing looms

Info

Publication number: US1633646A
Application number: US148404A
Authority: US
Inventors: Oscar V Payne
Original assignee: Crompton and Knowles Corp
Current assignee: Crompton and Knowles Corp
Priority date: 1926-11-15
Filing date: 1926-11-15
Publication date: 1927-06-28
Anticipated expiration: 1944-06-28

Description

O. V. PAYNE YIELDABLE GIVEWAY FOR WEFT REPLENISHING LOOMS Filed NOV. 15.v 1926 June 28, 1927. 156.143,64

' n/mfor o N 056W KfW/7@ orage- Patented June 28, 1927.

UNITED ASTATES oscAn v. PAYNE, or WORCESTER,MASSACHUSETTS, AssrGNon To oRoMr'roN a KNOWLES LOOMk WORKS, OF MASSACHUSETTS.

WORCESTER, MASSACHUSETTS, yA CORPORATION OF YIELDABLE GIVEWAY FOR WEFT-REPLENISHING LOOMS.

Application filed November 15, 1926. Serial No. 148,404.`

This invention relates to improvements in weft replenishing looms more particularly of the multi-color type, and it is the general object of the invention t-o provide a yieldable support more particularly for the tips of bobbins as the latter await transfer.

In weft replenishing looms of the multicolor type the bobbins are arranged in parallel vertical stacks according to distinctive characteristics and are released at the proper time to move to a common transfer position centrally located under the stacks. Then in this position the bobbins are held by yieldable supports which move vslightly atthe time of transfer to permit the new bobbin to pass into the exhausted shuttle. It animportant object of my present invention to provide a very Vsimple bobbin support which is suspended from a comparatively high point in the replenishing mechanism but is accurately placed by means of a locating lug near the bottom of th-e mechanism so that the end of the support may be accurately placed.

It is a further object of my invention to provide a yieldable support of wire, a portion of which is wound on itself to afford a coil to permit yielding mov-ement thereof.

Occasionally aV bobbin is not properly transferred and will stick upwardly from the shuttle as the 'lay moves backwardly. Under suchconditions the misplaced bobbin is likely to engage `the supports and carry the same rearwardly. 1n order toprevent breakage under such conditions it has been necessary heretofore to construct rather elaborate giveways or supports and it is a further object of my present invention to p provid-e means for requiring the support to move longitudinally away from the bobbin under the conditions just mentioned so that the bobbin may be free to move ofrn the support without undue movement of the latter or to'move rearwardly without distorting or fracturing the support.

With these and other objects in view which will appear as the description pro.

l ceeds, my invention resides-'in the combination and arrangement of parts "hereinafter described and set forth in the claims.

Inthe accompanying drawings wherein 1 have shown a convenient embodiment of my invention, Y f Y Fig. 1 is' a vertical section through VaV rection ofarrow 6, Fig. 4.

Referring to the drawings 1t will be seen that 1 have provided a multi-color magazine frame `10 having `a series of vertical compartments 11 in which are located bobbins W, said bobbins beingarranged in the comparte ments according to color or other distinguishing characteristic.l In the bottom of the magazin-e are located a series of so-called cradles 12, one for each of the stacks, and

said cradles are oscillated about their h0rizontalk axes, one at a time, by mechanism not shown, to move a bobbin toward transfer position. Ordinarily the bobbins'of any one stack will be located above the corresponding cradle,.thelatter being empty, and at the time of indication of weft exhaustion the proper'cradle will rockso that the lowermost bobbin of the associated stack can move downwardly intol the cradle. On a subsequent 'pick when the indicating Vshuttle returns under the magazine the cradle Will be rocked back to normal position, thus releasing the lowermost bobbin. At this time the bobbin which has been freed by the cradle lwill move downwardly on inclined runs and roll to a position centrally located Aunder the 4stacks immediately above the shuttle when the lay is in its eXtreme forward position. A. trausferrer arm indicated in section at 13 will then 4descend to insert a bobbin into the shuttle S. f f.

Vertical-thread slots 15 are located as shown in Fig. 1, the lower portions being oblique Vand defined in part by surface 16 on the outer part of the frame and in part by surface 17 formed on the inner portion of the ,magazine Runs 18 connect with the vertical plates between which the bobbins lie, said plates beingl held together by tie rods 14.

In carrying my invention into effect I provide a pair of giveways vfor the tip of the bobbin. The rear giveway 2O is formed of wire and has an upwardly extending arm which is wound with several coils 21 which lie around a sleeve 22 formed on a collar 23 located on the rear upper tie rod 14. By means of a set screw 24 said collar can be held in adjusted angular position on the tie rod so kas to vary the pressure of the wire giveway 20.

The forward giveway 30 is formed of another piece of wire and has the upper end thereofformed similarly to the upper end of the rst described support, being held on a collar 31 which is secured in adjust-ed position te the lower front tie rod 14. The upper free end of each of the wire giveways or supports is bent to eXtend substantially parallel to the associated tie rod and is received in a recess 32 in the corresponding collar. p

The lower ends of the supports are substantially the same and a description of onel will suflice for both. As shown in Fig. 1 the lower end of giveway 20 has a horizontal extension on which is secured a stop 41 held in longitudinal position on the horizontal portion 40 by means of screw 42. Said collar may be formed as shown in Fig. 4 and has a diagonal slot 43 oblique with respect to the aXis of the screw 42 so, that the latter together with the slot will prevent movement of the support out of said slot and thus insure proper positioning of the stop collar 41. The latter is formed with a V- shaped end 44 which is received in a corresponding notch 45 located in an extension 46 of the magazine tframe 10. Beyond the horizontal portion 40 the wire support is inclined downwardly and forwardly as at 50 and vis bent outwardly away from the center of the magazine as at 51 to define a supporting portion for the tip of the bobbin and is-then bent upwardly as at 52. The free end of the wire is then extended upwardly and rearwardly as at 53 substantially parf allel to the portion 50 to prevent endwise K' movement of the bobbin by-enga'gement of the tip thereof. Undue movement of the support 2O outwardly in a direction parallel to the axes of the bobbins may be prevented by lug 54 forming a usual part of the magazine frame and undue movement in the opposite direction is prevented by the extension 46.

The upper and rearwardly extending end 53 is bent outwardly as shown at 55 in I'l 3 and a portion of the magazine frame 10 is provided with an inclined face 56 to cooperate wit-h the end 55 to move the support in a direction lengthwise of the bobbin when for any reason said support is moved rearwardly an undue distance by a misplaced bobbin. The forward giveway 30 isrsubstantially the same as the rear giveway 2O except that the vertical portion thereof is shorter.

During the operation of transferring one or both of the wire supports will yield slightly away from the axis of the bobbin, the wedge-shaped collar 41 moving away from the notch 45. As soon as the bobbin is below the supports the coiled portions thereof will move the supports back to normal position, the wedge-shaped ends 44 of the collar entering the notches to locate the

portions

50 and 53 correctly. Adjustment of the bobbin engaging ends of the supports with respect to the axis of the bobbin in transferv position can be effected by means of the screws 42.

From the foregoing it will be seen that I have provided a pair of very simple yielding bobbin supports the upper ends of which are coiled to afford the necessary resilience and the lower ends of which are inclined and bent back so that a portion thereof lies above and beyond the guide portion to prevent endwise motion of the bobbin. Furthermore, it will be seen that the collars 41 cooperate with the notches 45 to correct the position of the supports after a transfer. It will also he seen that by reason of the inclined face 56 and the bent end 55 the lower end of the rear support 2O may be caused to move in a direction parallel to the bobbins in order to clear itself of an improperly placed bobbin. f

Having thus described my invention it will be apparent that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention, and I do not wish to be limited to the details herein disclosed but what I claim is:

1. In a weft replenishing mechanism having a frame to hold a plurality of stacks of bobbins, a pair of yieldable supports for the tip of the bobbin, one of said supportsbeing formed of wire bent on itself and having two inclined portions spaced vertically and horizontally, the upper portion to engage the tip of the bobbin and prevent endwise movement thereof and the lower portion guiding the bobbin toward and supporting the same in transfer position.

2. In a weft replenishing mechanism having a frame to hold a plurality of stacks of bobbins, a pair of yieldable supports for thetip'of the bobbin, one of said supports being formed of wire bent on itself and having two inclined portions spaced vertically and horizontally, the upper portion to engage the tip of the bobbin and prevent endwise movement thereof and the lower portion guiding` the bobbinV toward and supporting the same in transfer position, said portions being connected by a substantially horizontal part of the wire'adapted to have the tip o-f the bobbin rest thereon.

3. In a weft replenishing mechanism having a frame to hold a plurality of stacks of bobbins, means to support the front of the tip of a bobbin in transfer position, a yieldable support for the back Lof the tip of the bobbin in transfer position, said support formed of wire the 'upper end Aof which is held to the replenishing mechanism frame` and the lower portion of which is formed to guide a bobbin toward and hold the samev in transfer position, and means carried by the said wire to engage a notch formed in the frame to position the bobbin supporting end of said wire support.

4l. In a weft replenishing mechanism having a frame to hold a plurality of stacks of bobbins, a pair of yieldable bobbin supports c for the tip of the bobbin, one of said'supports formed of wire and having the lower end thereof inclined to guide the tip of the bobbin toward and support the same in transfer position, the upper end of the wire being secured to the frame, said support being resilient and held by its own resilience in bobbin supporting` position and movable therefrom under action of a bobbin, and positioning means carried by said wire support to engage a notch in the frame to position the bobbin engaging portion of said wire support both horizontally Vand vertically.

5. In a weft replenishing mechanism having a frame to hold a plurality of stacks of bobbins, a pair of bobb-in supports to hold the tip of a bobbin in transfer position, one of said supports being formed of wire and having` the upper end thereof coiled and heldin position relatively to the frame, rthe lower end of the wire being inclined downwardly and. toward transfer posit-ion to.

wardly with respect to a bobbin in transfer position, and a yielding support for the rear of the tip of a bobbin in transf-er position to engage said inclined means, said support when moved rearwardly by an improperly placed bobbin engaging the inclined means to move ina direction longitudinally away from the bobbin, whereby said support will move from under the tip of the bobbin.

7 In a weft replenishing mechanism having a frame to hold a plurality of stacks of bobb-ins, a pair of supportsrfor the tip of a bobbin,'one of said supports being formed of wire, and a positioning device rigid with respect to the wire support and having an open slot thereinfor the reception of the wire, and means extending through said device and engaging the wire to hold the device and wire in fixed posit-ion relatively to each other, said slot extending in such a direction as to have a component thereof parallel to the securing means.

In testimony whereof I have hereunto aflixed my signature.

oscan v. PAYNE.