US1765339A - Mechanism for weaving striped cloth - Google Patents

Description

MECHANISM FOR WEAVING STRIPED CLOTH Filed 001. 16, 1929 2 sheets sneet 1 lnvenfor. DClVId (ldones 1 Anya June 17, 1930. D. c. JONES 1,755,339

MECHANISM FOR WEAVING STRIPED CLOTH FiledOct. 16', 1929 2 Sheets-Sheet 2 as 3o a; 21: -ll

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Patented June 17, 1930 DAVID o. JONES,;OF CHESNEE, soumn cARoLInA,-AssIenon To DItAPER CORPORATION,

PATENT omen OF HOPEDALE, MASSACHUSETTS, A CORPORATTON F MAINE MECHANISM FOR WEAVIN G sinnrrnn oLo'rH Application filed. October 16, 1929. saw no. @9919.

This invention relates to a mechanism for producing a striped efi'ect or shadow stripes in cloth during the weaving operation.

- The invention has for its object to pro-' duce this striped effect or shadow stripes by raising the whip roll at predetermined intervals for predetermined periods.

The invention has for its further object to provide a simple and efficient form of mechanism for securing the desired result which may also be readily embodied in existing looms.

These and other objects and features of the 55' invention will appear more fully from the accompanying description and drawings and will be particularly pointed out in the claims. As the invention relates to a feature which may be embodied in looms of various types, 2'0 and as but a few of the usual loom instrumentalities are necessary to an understanding of the invention, and as the whole subject matter outside of the present invention is well known and familiar to those skilled in the art, it is only necessary here to illustrate and describe sufficient portions of an ordinary type of loom in order to disclose a simple and preferred form of the invention.

In the drawings:

Fig. 1 is a side elevation partially broken away and with many of the parts removed of a loom of an ordinary type, together with a 7 simple and preferred form of the invention embodied therein.

Fig. 2 is an end elevation of a portion of the construction shown in Fig. 1.

Fig. 3 is a detail showing a detent feature.

The loom illustrated is of an ordinary type comprising the side frames 1 and 2, the

lay 3 supported by the pivotally mounted lay swords 4, the loom arch 5 connecting the side frames, the usual cam shaft 6, the cam 4 7 on the cam shaft for operating the cam follower 8 which in turn operates the connection 9 to the usual weft hammer,not shown, the warp beam 10 with its gudgeons 11 journalled in the side frames, and other well known features and elements, all operating 0 in the usual manner.

sheet of warps 1-2 is shown as extend- 1ng up and over a-bar, shown as the usual whip Troll 1?), thence through thelease-rods 1 1,

then dlvlding into the shed 15', and thence through the reed 16 and thence over the breast beam in-the form of the completed cloth to the; cloth roll, not shown.-

" has been f u t at if the tension in the Warp sheet between the war'p 5 beam the shed increased at intervals, there will be formed f in the woven cloth? transverse stripes,- sometimes termed steam stripes, resulting-from this variation 1n tension and this striped effect canbe utlhzed to'g'iv'e 'a pleasing design in finished cloth by havdesired intervals ing' the stripes occur at and be of desired widths.-

In this inventionthis striped efie'ct is forined'by placing a bar, suclr'as the whip roll 18, beneath "the'sheet of warpsadjafcent the warp beam or betweenthe warp beam and the'shed, and raising this baror roll bodily at predetermined intervals for predetermined periods.

/ Preferably the usual; whip roll 13 i is "uti' lized. This whip roll is freely journall ediii bracketarms 17 "secured to a shaft 18 jou r nalled at the rear'ofthe loom frame so that as the supporting bracket arms 17 rock with the shaft 18, the Whip roll "has a vertical bodily.

movement. In order to raise thevvhip roll bodilyat the required intervals and during 13l16 required periods" to secure the desired striped effect, a simple and practical form of mechanism has been designed andf'is here illustrated. jshaft19 is mounted on'a portion 'of'the loom franie, such as the side frame; 1, and has secured thereto a' pair of sprocket wheels 20 21 A second ,stnb shaft 22 issecure'd to another portion "of the leemnamesach asthe arch 5 and hassecured thereto asprocket ,wheel 23, a ratchet'wheel 24and "a"de'tent'wheel'25." These threeelements 23,, 2d, and 25 are rotated in'unisons te'p by step from a suitable moving part of the loom'. For/that purpose the cam followen8 aiid" connect on 9, which are operated by the p 7 anthems shaftfi, are c onvenientlyuti-v .liz'e'd, a pawl 26 being pivotally secured at its lower end at 27 to the connection 9 and at its upper end riding on the ratchet wheel 24. Over-running of the shaft 22 is prevented by a detent arm 28 pivoted at 29 on the loom arch, having a roll 30 at its free end engaging the serrated edge of the detent wheel 25 and yieldingly held in engagement therewith by the spring 31. I V v r A pattern chain 32 is hung loosely on the sprocket wheel 20 and may be of any length desired and provided with any suitable number of risers 33 located at suitable points in the length of the chain. These risers are shown as presenting at their efiective portions anti-friction rolls. An arm 34 is secured to DAVID C. JONES.

the movable whip roll support'such as the bracket arm 17 and extends down into the path of the pattern chain 32 and its risers 33, this arm 34 being curved at its lower end readily to cooperate with the rolls of the risers.

The operation of the construction will now be apparent. As the weaving operation proc-eeds and the cam shaft 6 is rotated, the

, sprocket wheel 20 will be rotated step by step, thus advancing the pattern chain 32 and carrying the risers 33 past the end of the arm 34 at predetermined intervals and during predetermined'periods as determined by the character of the pattern chain and the timing of the mechanism. Each time a riser 33' passes the arm 34, the whiproll 13 is bodily raised, thus producing an increased tension in the warp shed adjacent the, warp beam or between the warpbeam and the shed resulting in a striped effect in the woven cloth. 7

There is thus presented a simple and efiicientmechanism which may either be built into new looms or readily applied to existing looms for producing an increased tension in a the warp sheet between the warp beam and the shed at predetermined intervals and for predetermined periods thereby toproduce a transverse striped effect in the cloth.

Having thus described the invention, what is claimed as new,.and desired to be secured by Letters Patent, is: i 1. A loom comprising a whip roll, a sup port for the whip roll mounted on the loom frame and movable to efiect vertical bodily.

movement of the whip roll, a sprocket wheel,

a pattern chain on the sprocket wheel,:risers on the pattern cham, an arm extending from the whip roll support into the path of the risers on the pattern chain, and means for rotating the sprocket wheel thereby to increase the tension in the warps at prede termined intervals for predetermined periods alndhproduce a transverse striped efi'ect in the 0 0t 2. A loom comprising a cam shaft, a Whip roll, a support for the whip roll mounted on the loom frame and movable to effect vertical bodlly movement of the whip roll, a sprocket wheel, a pattern chain on the sprocket wheel, 7

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