US1644721A

US1644721A - Warp beam for looms

Info

Publication number: US1644721A
Application number: US137860A
Authority: US
Inventors: Albert A Gordon
Original assignee: Crompton and Knowles Corp
Current assignee: Crompton and Knowles Corp
Priority date: 1926-09-27
Filing date: 1926-09-27
Publication date: 1927-10-11
Anticipated expiration: 1944-10-11

Description

oci. 11, 1927. 1,644,721

A. A. G oRDoN wARP vBEAM FOR Looms 4 Filed sept. 27. 192s.

Patented oei. 11, 1927.

narran fr;

anni

ALBERT A. GORDON, or WORCESTER, MASSACHUSETTS, Assrinoi. :To CR]oivzriToivfa xNOwLEs LOOM WoRRs, or woRcnsTnR, MassaorrusnTTa a CORPORATION A.or

MASSACHUSETTS.

` WARP BEAM roRLooivis.'

Application iledSeptember 27, 1926. Serial No. 137,860. Y

This invention relates to improvements in warp beams for looms and it is'the principal Object of the invention to provide a quickly adjustable false head for the barrel of the beam to vary the width of the warp space.

In my co-pending application Ser. llo. 86,066 there is shown'a warp beam formed ofy a steel tubular barrel having square threads cut thereon to receive internal square threads cut on the hub ofthe false head to permit longitudinal adjustment of the head along the beam. It is an important object of my present invention to improve upon the adjusting `feature of the beam by providing the barrel shown herein with helical grooves of very coarse pitch to cooperate with projecting screws extending from the smooth bore of the false head into the grooves to adord a very quick adjustment.

VIn said application I- have shown relatively large holes to receive the knotted ends of the warp threads which 'have been 4tied together` and it is a further object of my invention to provide an improved meansfor holding the warp ends comprising a flexible member stretched longitudinally inside the tube and havingthe warp" ends tied thereto and accessiblethrough small openings 1n the barrel. 1 j

It is a further object of my invention to provide an improved holding device to secure lthe false head in adjusted position, Said device comprising shoes or pads mount- ',ed in recesses'formed in the hubs of the false heads and being of sutlicient length to overlap the aforesaid holes which afford access to the flexible holding member.

With these and other objects in `view which will appear as the description pro-v ceeds,'my invention resides in the combination and arrangement of partshereinafter described and set forth in the claims.

In the accompanying drawings wherein I have shown a convenient embodiment of my invention, j

Fig. 1 is a side elevation of beam made according to a loom warp my present invention,

Fig. 2 is an enlarged transverse vertical cross section on line 2-2 of Fig. 1,

Figs. 3 and 4 are sections on lines 3 3 and 4 4, respectively, of Fig. 2,

Fig. 5 isa fragmentary enlarged vertical transverse section on line '5e-5 of Fig, 1

showing the manner of securing *the -warp ends to thejbeam below the. periphery ofthe barrel,` 9"

Fig. 6 is a section'cnline 6 6 of'Figl5 and-extending along a portion of thebeam to indicate how the flexible member actsin holding the warp ends tied thereto,

Fig. '7V is a fragmentary vertical section of the warp-beam on line 7-7I of Fig.l 6, with certain of the. parts in a different position` y and l Fig. 8 is adetail vertical section `through the holding shoe or pad andshowing the relation of the same with respect to one ofv the` holes adjacent thereto through whichr'the warp ends extend. 'V

Referring to the 'drawings it will Abe seen that I have provided a barrel 10'of'steel tubing and have secured thereto in 'any approved manner friction heads `llfrom which extend gudgeons 12 by means of which the beam/may be supported in a loom. The friction heads 11 are for the purpose of redceiving flexible bandsror straps whichfconstitute part ofthe let-off motion shown) of the loom.' f In carrying my invention into effect Ifpro-v vide each end of the beamfwith compound. spiralgrooves, tw'o being shown at 2O and 21, respectively. The "space between the grooves forming the surface of the beam 'is considerably longer than the vwidth of the grooves.

I further provide a pair of' false heads 22each of which has avhub 23- with a j substantially smooth bore24`as -shown particularly in'Figs. 3 and 4. "Said hubs have extending therethrough on opposite sides thereof guide studsor screws 25 the inner ends of frwhich are formed preferably cylin-l drical as at 26 and are received in the

grooves

20 and 21 so as to .afford meansby which the false heads may be moved toward and from the drums 11. In order tosecure the false head in any vadjusted'position the hub is provided witha pair Ofirece'sses 27 shown particularly in Figs. 2`aud 4 into each of'which extends a stud 128 threaded into the hub and having a ball end 29 passing into and having holding connectionwith the outer part and 8 and :has the inner surfacezthereof ,com cave so as to lit snugly with the outer cylir ofa shoe 30; ,Each shoe is of "substantial length asl 'shown in Figs'. 2

or loosening the screws 28 the shoes 30 may be clamped in place to hold the adjustment of the false head or to permit adjustment of the false heads along the barrel.

When a new warp is being placed on the beam the ends are divided into small groups which are tied in one way or another to the Warp beam so that as the latter is rotated by power the warps will be drawn from a creel.` In my present invention I provide for Stringing the different groups of threads onto a flexible member such as a cord or small rope, this feature of the invention being shown particularly in Figs. 5, 6, and 7, Where it will be seen that I have secured ya comparatively small wooden strip 31 on the interior of the barrel 10 by wood screws 32 which lie below the outer surface of the .barrel andhave extended said strip longi- .projects slightly beyond the near sides of the holes as shown in Fig. 7.

A plurality of screw eyes 34 are secured to the strip 31 and are located as shown in Fig. 6 intermediate the holes 33. There is threaded through said eyes a cord 35 the portions of which lyingv intermediate the eyes 34 are accessible through the openings 33 by means of a convenient tool such as a hook 36 shown in Figs. .6 and 7. Said cord 35k may be secured at both ends thereof to the Wooden strip byhaving knots formed thereon to engage the endmost screw eyes 34 as indicated in Fig. 6.

When a new warp is to bey tied to the beam the false heads 22 will be moved as previously described to positions defining the correct space for the warp and clamped in position by the screws 28 and shoes 30. The warps will then be divided into small groups and the hook 36 passed into the hole nearest one of the false heads to engage and withdraw the cord 35 to a position similar to that shown in Fig. 7. One of the endmost ksmall groups of warp threads is then tied to the projecting art of the cord and the hook is then inserte through the next hole to lift another part of the cord 35 through said next .hole after which the next small group of Warps will be tied thereto. This procedure is followed until all the warps are tied to thecord. It is to be understood that the rope 35 is somewhat longer than the distance between the end eyes so that it willk be possible by taking up the slack in the rope to have a portion thereof extend upwardly through one or another of the holes 33 as shown in Fig. 7. The warp beam may then be set in rotation to turn in either direction to'wind the warp on the beam from the creel (not shown). Any unevenness which may have resulted in the tying in of the warp ends will adjust itself because of the ilexibility of the cord 35. For instance, as shown in Fig. 6 one group indicated at VJ:L may be relatively tight so as to use up a comparatively long length of the slack of the rope, whereas the group Wb next thereto may be relatively long and require less slack. In this way the tlexibility'of the cord 35 tends to distribute the pressure on all the groups of warps and accommodate any unevenness vin the tension of the various groups. hould the cord 35 become broken one of the friction heads 1l may be removed by loosening screw 37 (Fig. l) and a new cord threaded through the eyes.

From the foregoing it will be seen that I have provided a warp beam for looms wherein the barrel is formed of metal tubing having spiral grooves of coarse gauge cut therein to receive the studs 25 of the false heads so that the warp when wound on the barrel will be affected little if any by t-he grooves. Also, the internal bore of the false heads is smooth and free from screw threads. It will further be seen that the shoes are longer than the diameter of the holes 33 so as to bridge the latter oand be always in contact with some port-ion of the surface of the barrel, so that the beam can be locked in any position irrespective of the position of the openings 33 with respect to the shoe. Also, it will be seen that I have provided va flexible rope or cord located inside the beam and accessible through openings in the latter, the cord being'provided with a small amount of slack by means of which a portion thereof may be drawn out of the beam for the purpose of tying the warp sections thereto. rAlso, this slackness of the cord acts to compensate for any unevennessin the length or tension of the various groups of warp threads. Another feature of the invention is that the wooden strip 3l, in being disposed so as to extend slightly beyond the adjacent edges of the holes 33, acts as a guard to hold' the cord 35 and warps I/V away from the inner edges of the openings 33 which are likely to have a slight burr due to the drilling operation.

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 invention7 and I do not wish to be limited to the details herein disclosed but what I claim is:

l. In a hollow warp beam for looms, a tubular barrel having openings therein through which the warp threads may extend, and a flexible member extending along the interior of the barrel to'havey warp threads tied thereto at a plurality of points.

2. In a hollow warp beam for looms, a tubular barrel having openings therein through which the warp threads may be passed. a flexible member extending longitudinally within the barrel, and a plurality of devices in the interior Vof the barrel to guide the flexible member to limit movement thereof, said flexible member being accessible throughthe aforesaidl openings in the barrel for the purpose of having the wrap threads tied thereto.

3. In a hollow warp beam for looms, a tubular barrel having openings therethrough through which the warp threads may be passed, a flexible member extending along the interior of the barrel, means to hold the ends of the flexible member so that the latter-.is slack, and a plurality of devices keach located between adjacent openings in the barrel to restrain movement of the flexible member, the warp threads extending through the openings and being secured to the flexible member, whereby any unevenness resulting in the tying of the threads to the flexible member will be compensated for by taking up sufficient slack of said member to adjust said unevenness of tension.

d. In a hollow warp beam :tor looms, a tubular barrel having a series of openings therethrough, a longitudinally extending member secured to the interior of the barrel and having a portion thereof provided with a smooth surface extending beyond the edges of said openings toward the centers of said openings, and a flexible element extending along said member to have the warp tied thereto and guided at a plurality of points, said smooth portion of themember guarding said flexible member and the warp threads tied thereto to hold the same away from the y adjacent edges of the openings in the barrel.

5. In a hollow warp beam for looms, a tubular barrel, and a flexible slack member confined within the barrel and having the ends thereof limited in movement, the warp threads extending through the barrel `and being secured to the flexible member.

6. In a hollow warp beam for looms, a

tubular barrel, and a flexible slack member .1

confined within the barrel and having the ends thereof limited in movement, the warp threads extending through the barrel and being secured to the flexible member at a plurality ofv points iny relatively small groups.

7. In a hollow warp beam for looms, a tubular barrel, a flexible slack member confined within the barrel and having the ends thereof limited in movement, the warp threads extending through the barrel and.

being secured to the flexible member, and

removable friction heads held to the barrel,

said heads being removable to afford access for replacement of the flexible member.

8. In a hollow warp beam for looms, a

tubular barrel, a plurality of aligned hollow devices located on the vinterior of the barrel, and a slack flexible member `extending through said devices, the warp threads extending through the tubular barrel and being tied to the flexible member in small groups at points intermediate Vthe devices.

9. In a hollow warp beam for looms, a tubular barrel, a plurality offaligned hollow devices located on the interior of the lthrough said devices, the warp threads extending through the tubular barrel and being tied to the flexible member in small groups at points intermediate the devices, and'friction heads at the end of the barrel, one of said heads being removable to afford access to the hollow devices so that the flexible member may be threaded therethrough. In testimony whereof I have hereunto affixed my signature.

ALBERT A.. GORDON.