US2057409A - Cloth wind-up for looms - Google Patents

Description

OC- 13 1936- c. P. BERGsTRoM A1. I 2,057,409

CLOTH WIND-UP FOR LOOMS Filed Septt 14, 1934 3 Sheets-Sheet 5 eqnvenors Carl E Berq'strom (Mbert Famer' .auw-PM Patented Oct. 13, 1936 UNITED STATES PATENT OFFICE t 2,057,409 v CLOTH WIND-UP FOR LooMs Application September 14, 1934, Serial No. 743,982

6 Claims.

This invention relates to improvements in cloth wind-up mechanisms for looms and it is the general object of the invention to provide a compact efficient mechanism for Winding up the cloth as it leaves the take-up roll. f

Because of certain conditions incident to cloth finishing it is. desirable to produce fabrics in strips as long as possible, and this usually calls for looms built to accommodate a large cloth package. In the finishing operations subsequent to weaving, certain fabrics, for instance, must have their ends sewed together to provide an endless loop so that they can pass properly through shearingmachines or bleaching or dyeing vats. The ends which are sewed together represent Waste cloth, and this waste can. bev reduced by having long lengths of cloth.

In order to permit the weaving Aof large packages of fabric it is customary to mount the cloth roll on movable supports which are normally urged yieldingly upwardly so as to be in driving relation with the take-up roll, and as the diameter of the package increases the cloth roll and its supports descend. Each end of the cloth roll has its own support, and the two supports must operate in unison so that' the roll ends will move down at the same rate, thus maintaining the cloth package in driving relation throughout its length with the take-up roll.

It is an important object of our present invention to provide as large a cloth space as possible by using a form of connection between roll supports which shall occupy very little more space than the cross girts and othermembers entering into the structure of the loom frame. This cross connection may involve a shaft tending to elevate the cloth roll through intermediate gearing. For this purpose it is a further `object of our invention to provi-de spiral springs connected to the supports and. located at substantial distances from the cloth space to be occupied bythe cloth package, together With reducing gears interposed between the cloth roll and a manual resetter for the cloth roll.

It has been common construction heretofore to employ vertical guides for large cloth-packages with the result that as the latter increases in diameter it projects more and more into the weavers alley between adjacent rows of looms, It is a further object of our present invention to mount the cloth roll in such a way that as the cloth accumulates the roll' will move rearwardly and not project too far into: the alley. This result we may accomplish by means of gear'segmen'ts moving .about a relatively high center and operating to swing the cloth roll rearwardly as it moves down- Wardly.

The winding-up mechanism is ordinarily controlled through a manual resetter which we locateat the side of theV loom where it will be removed from any space which could be occupied by the cloth package, and in accomplishing this result we also are able to mount the resetter a considerable distance above the bottom of the full cloth package. `In this position it will not interfere with an operator who Walks along the alley in front of the loom.

The previously mentioned gear segmentsr are driven about their common axis by meshing gears or pinions, and because of this fact we are. able to provide these segments with upwardly opening bearings or pockets for the cloth roll gudgeons which are accessible for all vertical positions of the gear segments, thus facilitating the removal of a partly lled roll.

It sometimes occurs that the weaver will wind up the cloth roll supporting spring too tightly with the result that as the cloth is wound on the roll the spring coils close on themselves before another cut of cloth is taken from the loom. It is a further object of our present invention to provide a. yielding or breakable connection between the spring and the cloth roll drive which can be ruptured when the spring is wound too tightly to prevent breakage of more expensive parts. In this connection it isa more detailed feature of our invention to provide a holding device to prevent part Vof the train of driving gear from striking and soiling the cloth when said yieldable part is broken.

The spiral spring which we employ has one end operatively connected to a shaft turnable by the hand resetter. It is a further feature of our invention to construct these parts so that excess reverse motion will preventI breakage of the end of the spring which engages the shaft.

With these and other objects in View which will appear as the description proceeds, our invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawings, wherein a convenient embodiment of our invention is set forth, and whereintwoforms of attachment for the spiral springs are shown,

Fig. 1 is a, front elevation of the lower part of a loom havingour invention applied thereto,

Fig. 2 is an end. elevation taken in the direction of arrow 2, Fig. 1,

Fig. 3 is a detailed vertical section on line 3--3 of Fig. 2,

Fig. 4 is a horizontal section on line 4-4 of Fig. 1,

Fig. 5 is an end view looking in the direction of arrow 5, Fig. 4,

Fig. 6 is a vertical section on line 6-6 of Fig. 1 on an enlarged scale.

Fig. '1 is a diagrammatic View showing the path which the cloth takes and indicating the increase in diameter of the cloth roll from minimum to maximum size, and

Fig. 8 is a view similar to Fig. 6 but with a modified form of attachment between the spiral spring and its shaft.

Referring to Fig. 1, the loomsides I0 are connected by a breast beam II over which the cloth C passes after being woven, and also a bottom cross girt I2. The lay I3 operates with a shuttle S and swings back and forth relatively to the breast beam in usual manner, moving around an axis I4 at the bottom of the loom, see Fig. 2.

A take-up roll I5 is driven by a gear I6 meshing with pinion I1 and the latter in turn is driven by a gear I8 meshing with a. gear I9 on a stud 20. The latter is supported by a bracket 2I having an upper foot 22 attached to the breast beam and tied to the adjacent loomside by brace 23. Fast with pinion I9 is a ratchet wheel 25 fed by a pawl 26 mounted on a lever 21 moving about a fixed axis 28. The lever is rocked regularly by some moving part of the loom, such as the lay, te give the feed pawl a progressive movement each pick of the loom.

As the cloth leaves the breast beam it moves in front of and under a guide roll 30, is wrapped around the take-up roll I5, then moves in front of and over a second guide roll 3|, and extends rearwardly and around the back of a third guide roll 32, from whence it goes to the winding up mechanism to be described, as suggested in Fig. '7.

The matter thus far described is of common construction and of itself forms no part of our present invention, operation of the loom resulting in a steady accumulation of cloth which must be wound up to keep it off the floor.

In carrying our present invention into effect we provide an improved form of support for the cloth roll 40 on which the cloth package is to be wound. This roll has end gudgeons 4I which are supported as shown in Figs. 1 and 2 in the upper ends of a pair of similar gear segments 42 and 43 and located respectively at the right and left hand sides of the loom. Each segment has an arcuate toothed section 44 and an upper arm 45 formed with an upwardly opening pocket bearing 46 to receive the adjacent gudgeon I4 of the cloth roll. The segments are pivoted on studs 41 adjustable vertically, the right stud in bracket 2l and the left stud in a smaller bracket 33 having a foot 34 and a tie brace 35. By means of these vertical adjustments of the studs 41 the cloth roll can be held in such position as to have driving connection throughout its length with the take-up roll.

The gear segments 42 and 43 mesh with gears 45 and 55, respectively, and since all the parts operating with gear 45 are similar to the corresponding parts associated with gear 55, a description of the connections for the latter gear will suice for both.

Referring particularly to Fig. 4, the gear 55 is mounted on a stub shaft 56 carried in a bearing 51 mounted on the loom frame. A hub 58 is angularly and longitudinally adjustable on shaft 56 by means of a set screw 59 and has driving connection with the gear 55 through one or more wooden pegs 60. These pegs may be driven through registering holes formed in the gear and the hub and are of sufficient strength to transmit all proper pressures. A disk 6I is held to the shaft 56 by screw 62 and serves to prevent improper endwise movement of the gear 55 should the wooden pegs 60 become broken for any reason.

As shown in Fig. 4 the outer or left end of the shaft has freely rotatable thereon a gear 65 which is recessed as at 66 and is attached as by a screw 61 to a housing 68 also recessed as at 69. A spiral spring 10 is located in the recesses formed in the gear 65 and the housing and in the preferred form has one end 1I thereof inserted into a slot 12 cut transversely through the shaft 56. The outer end of the spring is bent in the form of an eyelet 13 around a holding pin 14 riveted or otherwise secured to the gear 65. The loomside may if desired have a bearing 15 'for the shaft 56 to supplement the bearing 51.

It will be apparent from an inspection of Fig. 4 that the gear 55, shaft 56 and inner end of the spring 10 are all connected and move together, while the outer end of the spring is operatively connected to and moves with the gear 65 which is thus yieldingly connected to the gear 55. As stated, corresponding parts of the right hand construction for gear 45 are like those just described.

Journaled in and extending across the loom frame near the girt I2 is a shaft 16 to the right and left ends of which are secured pinions 11 and 18, respectively, meshing with the corresponding gears 65. The purpose of this shaft is to require both gears 65 to move angularly in the same direction and at the same rate, thus causing the cloth roll 40 to remain substantially parallel to the take-up roll when moving away from the latter.

In Figs. l and 2 we have shown a manual resetter on the left end of the loom. This resetter comprises a stud 88 extended laterally from the loomside to support rotatably a pinion 8| which meshes with the left gear 65, and there is keyed to pinion 8I, as shownin Fig. 3, a worm gear 82 meshing with worm 83. The latter is keyed to a short shaft 84 having a hand wheel 85 and the latter can be turned in either direction to turn the gear 85 either backwardly or forwardly. Shaft 84 is carried by a bracket 86 on the loom frame.

As shown particularly in Fig. 1 the hub of the wheel 85 may be provided with holding teeth 81 to receive a holding pawl 88 pivoted as at 89 to the bracket 86 and having a finger hold 96 by which the pawl may be tripped. Ordinarily the pawl prevents creeping rotation of the shaft 84 and thus holds the gears 65 in fixed locked position.

In operation, accumulation of cloth will start with the parts in the full line position shown in Fig. 1, with the take-up roll I5 rotating regularly to move the cloth roll in the direction of arrow a, Fig. '1. cloth will move along the dotted line b from guide roll 32 to the cloth roll and the gear segments will be in their high positions indicated in Fig. 2. The springs in their respective housing will be tensioned enough to hold the cloth roll firmly against the take-up roll. For each rotation of the cloth roll the latter will move away from the axis of the take-un roll bv an amount Under these conditions the equal to the thickness of the cloth and gradually the cloth package will assume the size indicated in dotted lines in Figs. 1 and 2.

When moving down from the full to the dotted line position shown in Fig. l-the cloth roll 40 will cause a partial rotation of the gear segments `about their aligned studs 41, resulting in rotation of gear 55 in a left hand direction as viewed in Fig. 2. This will cause a right hand rotation of shaft 5B and the inner end of the spring 'IU in the direction of arrow d as viewed in Fig. 6. Such an action on the part of the spring winds the same up to increase its tension and there is a corresponding force transmitted through the spring to the anchoring stud 14 tending to move the left gear 65 in the same direction. Such tendency, however, is checked by the worm and worm wheel and also hold pawl 88, as already described. The winding up of the spring increases the resistance of the latter so that the cloth roll is effectively supported even though its weight is increasing. i

By referring to Fig. 2 it will be seen that as the cloth roll moves.` downwardly it will first have an advancing movement toward the front of the loom while its diameter is relatively small, b-ut after passing ay position in horizontal alignment with the axes of the segments the roll will begin to move rearwardly, reaching the dot and dash line position of Fig. 2, from which it will be seen that the center of the roll is a considerable distance behind the front-most position which it assumes and that it moves rearwardly as its diameter increases, thereby moving the greater bulk of the cloth package out of the aisle.

When the cloth roll has reached a sufficiently large diameter to require removalfrom the loom `the attendant will lift the hold pawl Si! and 'turn the hand wheel 85 in such a direction as to cause movement of the gear E5 shown .in Fig. 6 ina right hand direction, thus relieving the tension of the spring andv simplifying the removal of gudgeons lll from the pockets 46. The shaft 16 which extends across the loom causes a corresponding unwinding of the spring at the right hand end of the loom as viewed in Fig. 1.

After the cloth has been removed and the remaining end secured to a new shaft 4E! the latter will be inserted into the opening bearings in the segments and the hand wheel B5 given a reverse rotation` to wind upY the springs, thereby causing the gears 45 and 55 to rock their meshing gear segments in a counterclockwise Vdirection as viewed in Fig. 2 and raise the new cloth roll shaft against the take-up roll.

It may happen that in this operation the operator will wind the spring too tightly so that when the new roll approaches maximum diameter the spring coils will be closed on themselves and further motion of shaft 56 relative to the stationary gear 55 will be prevented. Under these conditions the segment racks will continue their rotation of their driving gears but the wooden driving pegs 60 will be sheared before damage can result to any of the more expensive parts of the motion. After shearing of the pins the disks 6l will prevent the gears 45 and 55 from moving toward the ends of the cloth rolls and the latter will thereby be protected from the grease of the gears.

In the form of spring shown in Fig. 6 there is the possibility that if the weaver should wind shaft 56 in the reverse direction too far the spring will break at the point where it enters the slot l2. To prevent this we may use the modified construction shown in Fig. 8, where the spring IDI] which corresponds to spring 1G has itsrinner end bent to form a hook ll to be received by a pocket |02 cut into a shaft |03 corresponding to shaft 56. The normal strain will` be in the direction indicated by arrow f, Fig. 8, and the hook will besuflicient to maintain normal correct operative relations between the spring and the shaft, but when the shaft is given too large a reverse motion the inclined bottom IM of the notch will cam the hooked end of the spring upwardly to relieve strainingthe spring unduly. The spring will be sufliciently resilient to tend to move the hook I I back into the pocket lllfso that a subsequent turning of the shaft |03 in the forward direction to move the notch under the hook will again establish correct relationA between the spring and the driving wall of the notch.

From the foregoing it will/be seen that we have providedV a cloth wind-up mechanism having supports for the ends of the cloth roll operatively connected by the shaft 16 which is in low position where it cannot interfere with the increasing diameter of the cloth package. In this connection it is also to be noted that the spring which tends to hold the cloth roll up against the take-up roll does not occupy any space which can be taken up by the cloth package but is located at one side of the loom and is permanently connected to the driving gear for the segments. It is also to be seen that the manual resetter is considerably higher than the cross shaft 'f6 and it is there-fore not only more accessible but it is high enough not to trip the weaver when walking in front of the loom. It is also apparent that as the diameter of the cloth package increases the cloth roll moves rearwardly so that a minimum of the increasing bulk lof cloth projects into the alley in front of the loom. The pocket bearings in the segments are such that the roll can be removed with the segments in any one of a variety'of positions. Furthermore, the springs which hold up the cloth are of spiral form and occupy 'very little space and furthermore are not directly supported on the shaft 16 so that the effective diameter of the latter is kept at a mni- Also, shear driving pins are introduced into the train of gearing so that the development of undue strains need not be passed on to expensive parts of the equipment.

Having thus described our invention it will be seen 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 we do not wish to be limited to the details herein disclosed, but what we claim is:

1. In a loom having a take-up roll, a cloth roll, a gear segment to support the cloth roll, a pivotal support for the gear segment, the latter extending below said support, a pinion meshing with the gear segment, a shaft rotating with the pinion, a gear rotatable freely on the shaft, a spring operatively interposed between the gear and the shaft and tending to cause the shaft and gear to turn together, a worm gear operatively connected to the said gear, a manually operable worm for the worm gear, said worm rotatable in opposite directions to increase or diminish the tension of the spring and the latter effective normally to hold the segment in raised position, and a relatively weak driving connection between'the pinion meshing with the gear segment and the shaft, said weak connection to break when the coils of the spring are wound together tightly on each other.

2. In a loom having a cloth roll, a segment gear at each end of the cloth roll to support the latter, a gear meshing with each segment gear below the cloth roll, a stub shaft for each gear to which the latter is secured, each stub shaft extending from its corresponding gear away from the center of the loom, the segment gears and meshing gears defining between them a cloth space extending to a point below the axes of the stub shafts, a spiral spring connected to each stub shaft and located at one side of the cloth space, a gear loose on each stub shaft and connected to the corresponding spiral spring, means normally to hold the last named gear against rotation, a cross shaft located below the axes of the stub shafts and extending along the bottom of the cloth space, and pinions secured to the cross shaft and meshing with the loose gears, the cloth roll capable of extending downwardly to a point below the axes of the stub shafts.

3. In a loom having loomsides and a cloth roll, segment gears located between the loomsides and the ends of the cloth rolll to support the latter, meshing gears one for each of the segment gears located below the cloth roll, a stub shaft secured to each meshing gear, a spiral spring for each stub shaft, each spiral spring located outside the loomsides and having one end thereof connected to the corresponding stub shaft, a loose gear on each stub shaft located outside the loomsides and connected to one end of the spiral spring, means normally to hold the last named gear against rotation, a pinion meshing with each loose shaft, and a cross shaft to which the pinions are secured extending below the stub shafts, the segment gears and meshing gears defining a cloth space for the cloth roll which extends downwardly below the stub shafts.

4. In a loom yhaving loomsides and a cloth roll, segment gears located between the loomsides and the ends of the cloth roll to support the latter, meshing gears one for each of the segment gears located below the cloth roll, a stub shaft secured to each meshing gear, a spiral spring for each stub shaft, each spiral spring located outside the loomsides and having one end thereof connected to the corresponding stub shaft and lying in a plane perpendicular to the corresponding stub shaft, a loose gear on each stub shaft located outside the loomsides and connected to one end of the spiral spring, means normally to hold the last named gear against rotation, a pinion meshing with each loose shaft, and a cross shaft to which the pinions are secured extending below the stub shafts, the segment gears and meshing gears defining a cloth space for the cloth roll located between the stub shafts and extending downwardly below the latter.

5. In a loom having loomsides and a cloth roll, a pair of spaced segment gears to support the cloth roll, one adjacent each loomside, said gears defining between them a cloth space for the cloth on the roll, a bearing for each segment located between the cloth space and the adjacent loomside, a meshing gear for each segment, a stub shaft for each meshing gear lying outside the cloth space, a spring for each stub shaft, a gear loose on each stub shaft and operatively connected to the adjacent spring, means normally to hold the last named gear against rotation, a pinion for each loose gear, and a cross shaft extending below the cloth space and having the pinions secured thereto, the meshing gears, stub shafts, springs and loose gears being located at the sides of the cloth space.

6. In a loom having a cloth roll, a segment gear at each end of the cloth roll to support the latter, a gear meshing with each segment gear below the cloth roll, a stub shaft for each gear to which the latter is secured, each stub shaft extending from its corresponding gear away from the center of the loom, the segment gears and meshing gears defining between them a cloth space extending to a point below the axes of the stub shafts, a spiral spring connected to each stub shaft and located at one side of the cloth space, a gear loose on each stub shaft and connected to the corresponding spiral spring, a cross shaft located below the axes of the stub shafts and extending along the bottom of the cloth space, pinions secured to the cross shaft and meshing with the loose gears, the cloth roll capable of extending downwardly to a point below the axes of the stub shafts, and a manually operated worm and gear unit operatively connected to one of the loose gears and located above said loose gear to provide means for turning the cross shaft and pinion from a point located at one side of the cloth space.

CARL P. BERGSTROM. ALBERT PALMER.

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