US1657429A

US1657429A - Terry loom

Info

Publication number: US1657429A
Application number: US192279A
Authority: US
Inventors: Carl D Brown
Original assignee: Draper Corp
Current assignee: Draper Corp
Priority date: 1927-05-18
Filing date: 1927-05-18
Publication date: 1928-01-24
Anticipated expiration: 1945-01-24

Description

C. D. BROWN Jan. 24, 1928.

TERRY LOOM Filed May 18, 1 27 2 Sheets-Sheet l \nvenTor. (3014 D. Brown ow w FN mm by Ml/f Afiys.

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Patented Jan. 24, 1928.

UNITED STATES CARL ID; BRO-"WAT, 0F HOPEDALE, Mil-.SSAC'HUSETTE,

ASSIGNQH TO DRJELPEB ,CORPORA- 'll'ON, OF I-IOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

TERRY LOOM.

Application filed. May 18,

'lliis invention relates to improvements in terry loon'is and the object of the invention is to provide a mechanism for producing an even pile throughout the width of the fabric or the portion thereof provided with a terry pile. 1n looms of this type usually two sets of warp threads are employed, one for making the body of the taloric known as body warps, and one for making the loops'callec terry warps. During the *eaving operation forming a terry fabric, it is the usual practice partially to heat up the filling for a series of picks and upon a succeeding pick fully to heat up the filling, which forces the partially beat-up filling against the tell of the fabric and" can es the terry warps to form ui'iwardly and downwardly extending loops and thercby produce the pile of the fabric. The heights of the loops thus formed are determined by the position (it the first we'lt laid upon the partial beat-up.

in the usual operation of the terry looin the first weft laid upon partial. beat-up exte ds across the warps at an angle from the edge or selva-ge of the toll oi? the fabric to the partial beat-up position. Subsequent wefts made during partial beat-up extend in parallelism with the tell of the fabric. Upon full beat-up the wefts laid during partial beat-up are forced against the tell of the previously woven fabric and the loops of terry warps intermediate of the first we'll laid on partial beat-up and the toll are bent into loops which form the iilc. As the portions or the terry warps which he between the fell and the first pick and first welt laid upon partial beat-up are progressively shorter from the central portion ot the width of the web to the selvage at the end oi the loom from which the shuttle is picked, the loops formed upon iJull beat-up i em 1 l (.unurgt are progressively shorter from 1 portion of the web toward this et The object of the present invcn ion to provide means for preventing the production of such shorter loops and to insure the production of loops of equal length throughout substantially the entire width of the web of the fabric.

This is accomplished in the present invention by providing means which will direct the diet length of wettl aid upoi'ipartial beat-up in parallelism with the fell oi the fabric throughout the whole or subitantial 1927. Serial N0. 192,279.

ly the whole width of the web. As terry cloth is usually woven with selvage strips along the edge which do not contain terry loops, theineans for causing such parallelisin oil the threads may be positioned at or within the selvage. it, however, a fabric is woven in which the terry loops extend entirely to the edge oi the web, the means for directing the iirst we'l't upon partial beatup should be located at the edge of the web of fabric. I

it will therefore be understood that the present invention contemplates the provision of means for producingterry "fabric either with or without a selvage.

A preferred embodiment oi the invention is illustrated in the accompan; 'ng drawing as applied to a usualtype of terry loom such as that disclosed in Patent No. 1,322, 715, granted November 25, 1919, to the Draper Corporation, assignee oat Charles F. lilerrill, in which the partial and full heatups are produced by a swinging reed secured to the lay and movable from full beat-up position to partial beat-up position. The invention, however, is applicable to such other types of looms in which partial and full beat-ups are imparted to the lay.

As the general mechanism of the terry loom is well known, only such illustration of the terry loom is shown in the drawing as will show the application of the present invention thereto.

In the drawings:

Fig. 1 is a side elevation o1 a portion of a loom side showing the lay, the mecha nism for causing the partial and full beatups thereof and the present invention ap plied thereto. In this figure of the drawing the reed is shown in full beatup position.

Fig. 2 is a detail view of the mechanism embodying the present invention illustrating the reed in partial'beat-up position with means for directing the first warp laid upon partial beat-up in parallelism with the tell of the fabric.

Fig. 3 is a detail plan view of a portion of a 100m showing the manner in which the devices for directing the first weft laid upon partial beat-up are carried by the temple stands.

Fig. 4 is a detail vertical sectional view on lines l-l, Fig. 3, showing the manner in which the spacing fingeris arched to avoid engagement with the shank of the temple.

' einlmdiment Fig. is a diagrammatic View showing the tell of the web of fabric, the warps extending therefrom and illustrating in dotted lines the position assumed with the first wei't laid upon partial beat-up in usual structures and in full lines the position in which the well: is laid in the present invention.

The loom illustrated in the accompanying drawings comprises the usual loom sides 1, the lay 2 having a. recess 3 to receive the lower bar l of the swinging reed support 5 which is pivotally mounted upon the hand rail 6. The swinging reed support is moved toward and from full beat-up position by toggles at each end of the loom comprising links 7 and S, the adjacent ends of which are pivotally connected by a stud l) which forms the knee of the toggle. The opposite end of the link 8 is pivotally mounted on the stud 10 extending from a bracket ll carried by the lay. The link 8 is also provided with an extension 12 which is connected by a helical spring 13 to the end at an extension 1d of said bracket. The spring 13 tends normally to keep the toggle in extended position and the swinging reed support in full beat-up position. The swinging reed support is moved to partial position by breaking the toggle and this is accomplished in the present construction by a link 1.5 which is connected at one end to the link 8 of the toggle near the knee 9 and at. its opposite end to the end of an arm 16 which is rigidly secured to and extends from the beat-up shaft 17 and which is rocked intermittently by a lever 18 which is actuated by the usual terry cam 19, as fully set 'lorth in the patent to Merrill above-inentioned.

The present invent-ion comprises the provision of means for causing the weft laid by the shuttle upon the first pick of partial heat-up to lie in parallelism to the tell of the web oi? i'abrie throughout subst-antiallf, the entire width thereof. In the pret'mred oi the invention illustrated herein, this means con'iprises a spacing linger movable to partial beat-np position and in proximity to the edge of the web at the time the first pick is laid, so that the first pick upon the partial beat-up will be di rected thereby in parallelism to the fell the fabric. Preferably, but not necessarily, the's iiacing linger or'other means is thus positioned by the mechanism which SlllillS the reed from full beatup position to partial beat-up position.

In the preferred embodiment of the inx'en tion illustrated herein, the spacing finger is slidably supported by the temple stand and the spacing finger normally engages the head of the temple and partakes of the movement of the temple head.

The usual temple stand 20 which is mounted upon the bracket- 21 carried by the breast beam 22 inclines slightly downwardly and rcarwardly. The usual temple con'iprising a temple shank 9.3 and temple head 24: is yieldahly mounted in the temple stand.

In the particular embodiment of the in vention illustrated, the spacing linger is. carried by a slidin plate E253 which is provided with longitudinally extending slots 26 and 27 which siidably engage l'tftlpfitfl lvtlly studs 28 and 2D projecting om the side of the temple stand. The slot 1.? has an intermediate cam portion 30 which upon longitudinal moven'lent ol the sliding plate do presses the rearward end thercol.

The spacing linger 31, which desirably is formed of a rod, 's secured to the rear end portion at the sliding plate 2:"). The spacing linger 31 con'iprises a straight pin-lion which extends in substantially the axial direction oi. the plate 25 and is provided with a downwardly turned rear end 32, which, when the linger is moved to partial heat-up position. projects through the warps and thereby lies in the path at the lirst pick o'l' the weft laid upon the partial beat-up. The rear end portion of the linger 31 is bent to form an arch 33 which extends over the shank 23 ot the temple and the forward end of the linger is o'lli'set at right angles to the plane of this arch and extends through a block 3st which is slidably mounted in a recess 85 in tl a plate and i norided with a screwtlireadcd ere tension having a nut 37 which eng, the outer taee oil. the slide 25. By setting up the nut 87, the block 3st is drawn into the recess and clamps the end of the linger 3t which extends thrmigh it tirmly against the inner :lace of the plate thereby securing the linger firmly to the sliding plate Desirably adjustable means are prm 'idml for limiting the for ard movement of the finger. In the construction slnnvn, the slid ing plate 25 is provided at.- its rear end with a laterally extending flange 38 in which an adjusting screw Ill is seated and held in adjusted position by a set nut -l-ll. The temple head has an upwardly (Xltlltlllig horas or log ell which lies in the path oi and engages the head 01? the adjusting screw ll) when the slide is moved rearwardly, thereby limiting the movement of the linger so that it may he positioned accurately at the limit oi? partial beat-up oi. the reed.

Any suitable mechanism operable in syn chronism with the reed shitting mechanism may be employed to move the spacing linger to partial beat-up position. This purpose can conveniently be accomplished by actual ing the slide from the arm 10 ot the heat-up shaft 17 which is actuated by the terry cam and which arm acts through the link 15 to break the toggle which controls the position of the swinging reed support. In the construction illustrated, the sliding plate 25 has a flange 42 extending from its lower portion, to which one end of a chain 43 is connected,

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lIll' the opposite end of the chain being connected preferably by a spiral spring id to one of the usual slots 45, 46 in the end portion of the arm 16. A spiral spring 47 connected one end to the stud 28 extending from the temple stand and at its other end to the flange acts to retain the slide and finger normally inretracted position during plain weaving.

The slots 26 and 27 permit the slide to be withdrawn by the spring l? until the down wardly turned rearend portion of the spacing linger will engage the temple head. The spring 4-7 also permits a movement of the slide which enables the finger to partake of the movement of the temple head. Desirably the slots 26 and 27 are of suliicient length to permit the sliding plate and the finger carried thereby to yield with the temple sullic-iently to avoid breakage if the shuttle, failing to box properly, should get between the reed and the temple, under which circumstances the temple must yield a ramsiderahle distance to avoid a smash.

In the operation of the loom, the plain portion of the fabric is woven when the reed moved to full beat-up position, as illustrated in 1. During such plain weaving operation, the spacing finger held in inoperative position and preferably against the temple head. hen the usual pattern mechanism of the loom calls for partial beat-up, the lever 18 is connected by the usual locking mechanism to the arm 48 which is on the beat-up shaft 17, thereby causing the beatsup shaft to depress the arm 16, thus breaking the toggle and shifting the reed to partial beat-up position. At the same time the downward movement of the arm 18 acting through the chain 43 draws the slide forwardly. The cam section 30 f the slide thereupon depresses the rear end the slide and consequently depresses he downwardlyextending end portion 32 of the spacing linger 31 through the plane of the warps. The rearward movement of slide advances the downwardly extending end portion of the spacing lingcr'until it reaches partial beat-up position, such movement being limited by the engagement of the head of the adjustable screw 39 with the lug all upon the loom temple. lVhen, therefore, the first pick is laid, the weft engages the downwardly extending end portion 32 of the spacing finger and extends from in parallelism with the fell of fabric as illustrated by the full line a Fig; 5, instead of lying at an angle to el of the fabric as illustrated in the line 71 in Fig. 5, which would be the case in the absence of a spacing finger or other spacing means. In the present construction, the spacing linger 31 is carried by the temple and the downwardly extending end 32 thereof extends through the warp Within the series of selvage warps 49. It will, howmanner as to lie at the edge of the web of fabric.

l.)es1rably similar spacing fingers are employed at both sides of the loom for it will be readily understood that if an odd number of wefts are laid during beat-up, the reed shifting mechanism will operate when the shuttle is alternately at opposite sides of the loom, and a guiding device, therefore, will be required at each side of the loom to insure the laying ofthe first weft upon partial beat-up in parallelism with the fell of the fabric. By reason of the present invention, therefore, the length of terry warps between the fell of the web of fabric and the first weft laid upon partial beatup will always be equal throughout the width of the loom and upon full beat-up these portions of the warps will form loops of uniform height throughout the entire width of the terry weave.

It will be understood that the particular embodiment of the invention disclosed herein is of an illustrative character and that various changes in form, arrangement and construction of parts may be made within the spirit and scope of the claims. It will also be understood that the invention is equally applicable to terry looms in which the lay as a whole is selectively given full and partial beat-up movements.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is:

1. In a loom for weaving terry fabrics comprising a lay, means for selectively shifting the reed of the lay to full and partial beat-up positions, means for causing the weft, laid by the shuttle upon the first pick of partial beat-up, to lie in parallelism with the tell of the web of fabric throughout the entire width of the terry weave.

In a loom for weaving terry fabrics comprising a lay, means for selectively shift ing the reed of the lay to full and partial beat-up positions, guiding means operable upon the first pick of partial beat-up to engage the weft at or adjacent the edge of the web at partial beat-up position and cause the same to lie in parallelism to the fell of the web of fabric throughout the entire width of the terry weave.

3. In a loom for weaving terry fabrics comprising a lay, means for selectively shifting the reed of the lay to full and par= tial beat-up positions, a linger movable to partial beat-up position of the reed and in proximity to the edge of the web of fabric to cause the weft to lie in parallelism with the fell of the web of fabric and means operable by the reed-shifting means for positioning said finger.

4. In a loom for weaving terry fabrics comprising a lay, means for selectively shifting the reed of the lay to full and partial beat-up positions, a linger movable to partial bcat-up position of the reed at the edge of the terry weave to cause the weft to lie in parallelisn'i with the fell of the web of fabric, means operable by the reed-shiftingmeans for i ositioning said finger and adjustable means for limiting the positioning movement of said finger.

In a loom for weaving terry fabrics comprising a lay, means for shifting the reed of the lay to full and partial beat-up positions, a temple stand, a temple, a finger mounted upon said temple stand and movable longitudinally relatively thereto and means operal'ile by the reed-shifting means, when actuated to position the reed in partial beat-up position, to advance said finger into the path of the weft at the partial beat-up position.

6, In aloom for weaving;- terry fabrics comprising a lay, means for shifting the reed of the lay to full and partial beat up positions, a temple stand, a temple yieldahly mounted therein, a slide reciprocably mounted upon said tLIIll'llC stand having a downwardly extending linger normally engaging the temple head and movable therewith, means operaliile by the reedshifting mecluiuism, when actuated to shift the reed to partial beat-up position, to advance said slide and position said, linger in the path of the weft at partial beat-up position and means operable to withdraw said slide to, and to retain the same in, normal position when the reed is shifted to full beat-up position.

7. In a loom for weaving, terry fabrics comprising a lay, means for shifting the reed of the lay to full and partial beat-up positions, a temple stand, a temple yieldably mounted therein, a slide reciprocably mounted upon said temple stand having a l()\V1l\\':Ll'(ll Y extending linger normally ongaging the temple head and mo"able therewith, means operable by the reod-shifting nnw-hanism, when actuated to shift the reed to partial beat-up position, to advance said slide and position said linger in the path of the weft at partial beat-up position, 00- operating adjustable means on said slide and temple head to limit the forward movement of said slide and means for withdrawing said slide to normal position when the reed is shifted to full beat-up position.

8. In a loom for weaving terry fabrics comprising a lay, means for shifting, the reed of the lay to full and partial beat-up positions, a tcn'iple stand, a temple yieldably mounted therein, a slide reciprouably mounted upon said temple stand having a downwardly extending linger normally on gaging the temple head and movable therewith, means operable by the real-shifting, mechanism, when actuated to shift the reed to partial beat-up position, to advance said slide and position said finger in the path of the weft at partial beat-up positiim, means for limiting the advancing lTlOVBl'IlGlll', of said slide including a screw adjustahly seated in said slide, an abutment on said temple head adapted to be engaged thereby upon advancing, movement of said slide and means for withdrawing said. slide to normal position when the reed shifted to full beat-up position.

5). In a loom for weaving terry fabrics con'iprising a lay, means for shift-mg, the reed of the lay to full and partial beat-up positions, a temple stand, a temple yieldablv mounted therein, a slide mounted on said temple stand. having a cam slot o 'ierable upon advancing movement of: said slide to depress the forward end thereof, a linger extending forwardly and downwardly from said slide normally engaging the temple head and partaking the movement thereof, llNllllS operable by the reed-shiftinp meehanism, when actuated to shift the reed to partial beat-up position, to advance said slide and position said finger in the path of the weft at partial beat-up position and means operable to withdraw said slide to, and retain the same in, normal position when the reed is shifted to full beat-up position.

10. In a loom for weaving terry fabrics comprising a temple stand, a temple reciprocably mounted therein, a lay, means for shifting the reed of the lay from full to partial beat-up positions including a lion gle, a cam-actuated beataip shaft having, an arm and means connected to said arm. for actuating, said toggle, a iirigor-carrying slide reciprocably mounted upon said, ten1- ple stand, means connecting said arm and said slide operable to advance said slide and position the finger thereof in the path of the weft at partial beat-up position upon actuation of said arm to cause the toggle to move the reed to partial heat-up position.

In testimony whereof, I have signed my name to this specification.

CARL D. BROlVN.

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