US2447227A - Support for warp beams in looms - Google Patents

Description

1948- c. P. BERGsThoM 2,447,227

SUPPORT FOR WARP BEAMS IN LOOMS Filed April 10, 1946 2 Sheets-Sheet l 26\ FIG. w .2 26 ll IO 22 l a; 22 20 32 l 37-5-64 0 2 3| I r 8 5 iii 5 "mm? l hmllu INVENTOR CARL RBERGSTROM wmw.

ATTORNEY g- 1948- C.YP. BERGSTROM 2,447,227

SUPPORT FOR WARP BEAMS m LOOMS Filed April 10, 1946 2 Sheets-Sheet 2 INVENTOR' CARL I? BERGSTROM ATTOR NEY Patented Aug. 17, 1948 SUPPORT FOR WARP BEAMS IN LOOMS Carl I. Bergstrom, Millbury, Mass., assignor to Crompton & Knowles Loom Works, Worcester, Mass., a corporation of Massachusetts Application April 10, 1946, Serial No.'661,11 9

This invention relates to improvements in supports for warp beams in looms and it is the general object of the invention to provide a beam support which will permit the use of warpbeams of various diameters.

It is another object of the invention to provide a support which can be detachably held in fixed position to support the beam, but released so that it cans-wing out of the path of the beam when the latter is removed from the loom.

It is a further object of the invention to provide a support having a permanent pivotal connection with the loom frame and having a. de-

tachable positioning mechanism spaced from the pivotal connection and so located as to locate the support in correct position for holding beams of different sizes. In this latter connection de-. tachable bolt means or thelike may be employed to hold the support normally rigidly against the loom frame but removable when the positioning mechanism is removed to permit the support to swing to inoperative position.

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

In the accompanying drawings, wherein a convenient embodiment of my invention is set forth,

Fig. 1 is a rear elevation of part of a loom showing a warp beam held in position by the improved support forming the subject matter of this invention,

Fig. 2 is an enlarged side elevation looking in the direction of arrow 2, Fig. 1,

Fig. 3 is a rear elevation looking in the direction of arrow 3, Fig. 2,

Fig. 4 is an enlarged vertical section on line 4-4 of Fig. 2, v

Fig. 5 is an enlarged horizontal section on line 5--5 of Fig. 3,

Fig. 6 is an enlarged vertical section on line 66 of Fig. 3,

Fig. 7 is a view similar to a portion of Fig. 2 but showing the manner in which the improved support is moved to inoperative and non-supporting position when the warp beam is to be removed from the loom, and

Fig. 8 is a side elevation tion of arrow 8, Fig. 1.

Referring particularly to Fig. l, I have shown right and left loomsides Hi and II supporting a whip roll I 2 over which the warp W from the warp beam B extends toward weaving position, or to the left as viewed in Fig. 2. The warp beam has heads l3 from'the left hand one of which extends a gudgeon l4. As viewed in Fig. l the right end of the warp beam is connected to a letlooking in the direcofl mechanism designated generally at l5 the purpose of which is to regulate the turning of the beam to deliver warp. This mechanism I5 is very 1 Claims. ((31. 139-97) bearing not shown herein but permitting rearward movement of the left end of the beam as viewed in Fig. 1 when it is desired to take the beam out of the loom. When a new beam is placed in the loom it will be fitted to the letofi mechanism l5 and the left end will then be moved forwardly. Further details of this procedure and also the mounting for the letoff will be described hereinafter.

Referring more particularly to Figs. 2 and 3, the loomsides are each provided with a stationarybracket 20 on which a whip roll carrier 2| is pivoted as at 22. A forward arm 23 of each carrier is held in fixed position on the adjacent bracket 20 by a bolt 24, and upwardly opening pocket 25 at the rear of the carriers receive the gudgeons 26 at the ends of the whip roll. The vertical position of the whip roll can be varied within limits due to a slot 21 in each bracket 20 through which bolt 24 passes.

The left end of the loom as viewed in Fig. l is provided with my improved support'designated generally at 30. This support has a vertical member or arm 3| formed at its upperend with a. hub 32 which receives the bearing 33 of a headed stud 34. The outer reduced end of the stud 34.

is screw threaded at 35 and extends through a slot 36 extending-horizontallyin the 100m frame. The stud 34 serves as a permanent pivotal mounting for the support 30, and is held in fixed position by a nut 31..

The lower part of the arm 3| is formed integrally with a vertical rearwardly extending web All in the forward part of which is located a horizontal slot 4|. A bolt 42 passes through slot 4| and also through a vertical slot 43 in the loom frame. Bolt 42 has a head 44 by means of which tion shown in Fig. 5 move the plunger 41 rearwardly out of the bore 48. Normally, however, the spring 49 holds the plunger in the bore 48 and therefore positions the lower end of the support 30. Slots 36,'4| and 43 facilitate assembly of the support 30 and permit some adjustment thereof. Plunger 4'| fits bore 48 snugly, and when nuts 31 and 45 are tightly in position as shown in supporting ledge or shelf 50 which ordinarily is downwardly and rearwardly inclined as shown in Fig. 2. The ledge or shelf .60 is shown in the present instance as having therein tapped holes Si, 62, 83, B4 and 65. These holes are arranged in alignment along the shelf 60 and receive screws I and H which support a bearing designated generally at 12. This bearing has a base 13 held tightly against the upper surface 14 of the shelf 60 by the screws and II. A bearing cap 15 is pivoted as at It to the base 13 and is held in normal position by a bolt 11 pivoted as at 18 to the base 13. A nut 18 at the upper end of bolt TI can be tightened to locate the cap 15 in correct position with respect to the base to receive the gudgeon H of the warp beam.

It will be apparent from Fig. 6 that the bearing 12 can occupy three different positions along the shelf 60 in each of which it will be held tightly on the support 30. Thus, when a small diameter beam designated at B in dotted lines in Fig. 2 is used the screws 10 and II will be in the tapped holes BI and 63. When a beam of somewhat larger diameter is used, such as indicated in full lines in Figs. 1 and 2 and designated at B, the screws 10 and II will be in the tapped holes 62 and 64, as shown in Figs. 2 and 6. If, however, a beam of still larger diameter is to be used, such as indicated at B2 in dot and dash lines in Fig. 2, the bearing 12 will be in its rearmost position and its screws will be in the tapped holes 83 and 65.

It will be seen particularly from Fig. 2 that as the bearing 12 is moved rearwardly to accommodate beams of increasing diameter it also moves downwardly in a direction away from the whip roll I2. The latter may therefore be maintained in its correct position for weaving purposes as determined by the adjustment of the carriers 21 as beams of various diameters are used.

When the warp beam is empty and is to be removed from the loom, a small carriage or dolly D, see Fig. 7, will be placed under the beam head l3 adjacent to support to hold the left end of the beam as viewed in Fig. 1. The bearing cap 15 is then released and raised to the position shown in Fig. '7 after which bolt 42 will be removed as suggested in dotted lines, Fig. 4, and the plunger 41 removed from the bore 48. The support 30 will then be free to swing forwardly or to the left from the position shown in Fig. 2 to that shown in Fig. 7. The pivot stud 34 is so located that the base 13 of the bearing 12 will move easily away from the gudgeon I4 of the beam during this operation. The left end of the beam as viewed in Fig. 1 is then moved rearwardly, the dolly D rolling for this purpose, until it moves from the full line to the dotted line position in Fig. 7, in which position it is clear of all parts of the support and the bracket 48. The beam can then be moved endwise for release from the letoff mechanism [5. The reverse process is used when a new beam is to be fitted to the loom. If the support 30 should remain permanently in the position shown in Fig. 2 it would interfere with endwise movement of the beam and removal from the letoff mechanism, since the latter is ordinarily able to permit a small angular movement only of the beam.

The previously mentioned letofi i5 is supported on a vertical bracket 80 having upper and lower feet 8] bolted as at 82 to the loom frame Hi. This bracket has an upper edge or surface 83 which is inclined downwardly and rearwardly at substantially the same angle of inclination as that of shelf 60 when the latter is in its normal beam holding position. Wall is formed with three pairs of slots, the pairs being horizontally spaced and being arranged in a downwardly and rearwardly inclined order. Thus, the front pair and 86 are at a somewhat higher' level than the intermediate pair 81 and 88, and the latter in turn are higher than the rear pair 89 and 98. These pairs are spaced at distances corresponding to the three different positions which the bearing 12 can occupy on the shelf 60.

The letoff is mounted directly on a stand 9| which is held to bracket 88 by bolts 92. These bolts can occupy any of the pairs of slots, depending upon the size of beam being used, to locate the letoff at different distances from the loom frame. The upper ends of slots 85, 81 and 89 are substantially equidistant from the inclined surface 83, and the latter may if desired form a support for hub 93 formed as part of the letoff mechanism l5.

From the foregoing it will be seen that I have provided a simple form of support for a warp beam pivoted with respect to the loom frame at its upper end and be positioned near its lower end by an easily removed plunger. The support is also provided with a rearwardly and downwardly inclined shelf so constructed as to hold a warp beam bearing in any one of several positions to accommodate beams of different diameters. When the bearing 12 is moved rearwardly to accommodate a larger beam it also moves downwardly so that the larger beam will not interfere with the whip roll. The support is so made that it can be swung out of the path of the beam when the latter is moved endwise for removal from the loom. Since the greater part of the weight of the support is normally behind the pivot stud 34, the support will remain in the position shown in Fig. 7 by its weight.

Having thus described my 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 I do not wish to be limited to the details herein disclosed, but what I claim is:

1. In a loom capable of operating with warp beams of different diameters and having a whip roll over which warp from the warp beam extends, a support for a warp beam, means constituting a pivotal connection for the support fixed with respect to the loom, a plunger slidably mounted with respect to the loom and normally engaging the support and cooperating with the pivotal connection to prevent angular movement of the support relatively to the loom, a downwardly and rearwardly inclined shelf on said support, a bearing for a warp beam on said shelf, and means for attaching said'bearing to the shelf at any one of a plurality of different points along the length thereof at different distances fromthe whip roll to accommodate warp beams of different diameters, said support upon removal of the plunger from engagement therewith being movable about said pivotal connection in a direction to move said bearing away from the axis of the warp beam to facilitate removal of the latter from the loom when the bearing is attached to said shelf at any of said different points. i

2. In a loom capable of operating with warp beams of different diameters and having a frame on which is mounted a whip roll, a support for a warp beam, a pivotal mounting for the support fixed on the loom frame, a plunger slidably mounted with respect to the loom frame and normally in. engaging position with respect to said support and cooperating with said pivotal mounting to prevent angular movement of the support relatively to the loom frame, a downwardly and rearwardly extending shelf on said support, a warp beam bearing, and means to hold said bearing to said shelf in any one of a plurality of different locations along said shelf at different distances from the whip roll to accommodate wa p beams of different diameters, said plunger being removable from engagement with the support to enable the latter to swing around said pivotal mounting to move said bearing away from the axis of the warp beam to facilitate removal of the latter from the loom when the bearing is in any of said locations along the shaft.

3. In a loom capable of operating with warp beams of different diameters and having a frame on which is mounted a whip roll, a support for a warp beam provided with an upwardly extending arm and a rearwardly extending vertical web, a pivotal connection between the upper end of said arm and the loom frame, detachable means movably mounted on the loom frame and normally in engaging position with respect to the lower part of said web to cooperate with said pivotal connection to prevent angular movement of the support relatively to the loom frame, a downwardly and rearwardly inclined shelf rearward of said arm and extending along the upper part of said web, a warp beam bearing, and means to secure said bearing in diiferent positions along said shelf at different distances from said arm and said whip roll to support warp beams of different diameters, said detachable connection when detached from the support permitting the latter to move pivotally about said pivoted connection in a direction to move said bearing away from the axis of the warp beam to facilitate removal of the latter from the loom when the bearing is in any of said positions along said shelf.

4. In a loom having a frame and operating with a warp beam and having a whip roll above said beam, the loom frame having a substantially horizontal slot therein, a support for the-warp beam, means secured to the frame and adjustable horizontally in said slot affording a pivotal mounting for the upper end of said support, a plunger supported by and slidably mounted with respect to the loom frame and normally engaging the support and cooperating with the pivotal mounting to prevent angular movement of the support relatively to the loom frame, adownwardly and rearwardly inclined shelf on said support, and a bearing for the warp beam secured to the upper part of said shelf, said shelf having provision for securing the bearing thereto thereal'ong at diiferent distances from said whip roll, said support upon removal of the plunger from engagement therewith being movable around said pivotal mounting in a direction away from the axis of the beam to move said shelf and bearing forwardly of the beam to facilitate removal of the latter from the loom.

5. In a loom having a frame and operating with a warp beam, said loom frame having a horizontal slot therein and having also a vertical slot therein below the horizontal slot, a support for the warp beam, means, fixed with respect to the loom frame but adjustable along the length of said horizontal slot affording a pivotal mounting for the upper part of said support, a plunger 7 slidably mounted for movement along an axis fixed with respect to the loom frame and normally engaging part of the support to cooperate with the pivotal mounting to prevent angular movement of the support relatively to the loom frame,

said support having a substantially horizontal slot therein adjacent to said vertical slot, clamping means extending through said horizontal slot in said support and through said vertical slot and clamping said support against the loom frame, a downwardly and rearwardly inclined shelf on said support, and a bearing on the upper part of said shelf for the warp beam, removal of said plunger from engagement with the support and removal of said clamping means enabling said support to be moved forwardly away from the axis of said beam to facilitate removal of the latter from the loom, said slots, pivotal mounting and clamping means permitting angular adjustment of the support around the plunger to vary the inclination of said shelf.

6. A warp beam bearing support for a loom having a pivot and a slidable plunger below the pivot, said support when in normal position in the loom having a forward vertical arm the upper part of which has a hole therein to receive said pivot, a web extending rearwardly and downwardly from the lower end of said arm and having the lower part thereof formed with a hole to receive said plunger, and a shelf along the upper part of the web extending downwardly and rearwardly from a point vertically intermediate the pivot and plunger receiving holes to the rear part of the web, said shelf having provision for securing a warp beam bearing thereto at different positions therealong rearward of said armand at points lower than the pivot receiving hole in said arm.

7. A warp beam bearing support for a loom having a pivot and a slidable plunger below the pivot, said support when in normal-position in the loom having a forward vertical arm the upper part of which has a hole therein to receive said pivot, a web extending rearwardly and downwardly from the lower end of said arm and having the lower part thereof formed with a hole to receive said plunger, said web having formed in the forward part thereof a bolt receiving slot under said arm intermediate said holes and extending transversely of a straight line joining said holes, and a shelf along the upper part of the web extending downwardly and rearwardly from a point vertically intermediate the pivot and plunger receiving holes and rearward of said slot to the rear part of the web, said shelf having provision for securing a warp beam bearing thereto at different positions therealong rearward of said arm and slot and at points lower than the pivot receiving hole in said arm.

CARL P. BERGSTROM.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,013,443 Rhoades Jan. 2, 1912 1,670,655 Draper May 22, 1928 2,096,593 Rogers Oct. 19, 1937 2,105,102 Thompson Jan. 11, 1938

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