US1772080A - Loom - Google Patents

Description

Aug. 5, 1930. J HARRIS 1,772,080

LOOM

Filed Dec.l8, 1929 INVENTOR llri hurr- J. 15 8/7723,

Patented Aug. 5, 1930 UNlT'ED STATES ARTHUR J. HARRIS, OF PATERSON, NEW JERSEY Application filed December 18, 1929. Serial No. 414,911.

This invention relates to narrow-ware looms of the class represented by my Letters Patent No. 1,589,073 and the patent to William Harris N 0. 950,021 and in which, given means for guiding the band of warp and finished fabric, a rotary supply device and a rotary receiving device on which the warp and finished fabric are respectively wound are coaxially related and separably intercoupled to rotate as a unit, so that as the band is advanced in the weaving and the warp supply device is consequently rotated to pay out the Warp the fabric receiving device is rotated from the warp supply device to wind up the fabric. Some means is usually employed to cause traverse of the part of the -tioned band of warp and finished fabric is hand which adjoins and is about to be wound on the receiving device so that the windings of the band will form thereon a symmetrical package of layers of the band, and if this traverse is not of such extent that the ends of the package are well inward of the ends of the receiving device (at a sacrifice of space useful for the'windings) and if in the winding a convolution slips off the package it will come to rest, not on the receiving device, where it still would be tractively active thereon, but on the spindle or equivalent on which the supply and receiving devices are journaled, and, in response to the tension maintained on the band, when the intercoupled devices are thus suddenly freed the two devices become twirled as one on the spindle with incidental wrapping of the band around the spindle, and the band snaps and the entire weaving unit is put out of commission. It is found impracticable merely to peripherally flange the receiving device and cause the traverse to form the package so that its ends will abut such flanges because unless the flanges are unduly large in diameter the end convolutions are likely to climb over them and in any event those convolutions then become subject to cramping against the'flanges and consequent wrinkling and other distortion detracting from the sale value of the finished fabric.

The object of this invention, then, is to provide for the forming of the fabric mass or package on the receiving device's oas to utilize as much asipossible of the length thereof for reception of the package without the risk of the band if it slips off of either end of the package losing tractive control of said device and to accomplish this result without incidentally deforming the end convolutions of the package.

In the drawing,

Fig. 1 is a side elevation'of so much of a vices, and the windings thereon andillustrates my invention in detail.

1 is the frameof the looin. The menindicated generally in Fig. 1 by the character 2 and in Fig. 2 by the characters 2 and 2 of which 2* applies to the warp portion thereof and 2 to the finishedfabric. This band is by ineans of rollers?) at the top :of the loom hung loops as shown in Fig. 1 each suspending a weight 4:, which weights afford the necessary tension on the band. Thelband further extends under guide bar 5, then forward over a guide bar 7 at the front of the loom, then down around the sand roller 8 and pressure roller 9 of a take-up mechanism, then back under a beam 10 serving as a guide and then up in contact vwith the bar 11 of a fulcrumed traverse-eflecting structure 11 pivoted on a horizontal axis at its base to thevback of'the loom. f The take-up or advance ofthe band as the weaving proceeds is effected by rotating the sand-roller 8 from a going shaft 12 through the sprocl et-and-hhain d i '13 The 'structurell is moved back and forth to cause traverse of the fabricportion of the band by'a cam 14 which is rotatedfrom shaft 12 by the sprocket-and-chain drive 15. The means for forming sheds in the warp portion of the band is omitted, and thebat-ten16 and the shuttle 1 6 thereon are only shown in a, general way, as these are not niaterial'to inyjinvention. What-has so far been described is substantially the same as in the patents already noted, as is also the spindle 1 projecting from'the frame and forming the axial support for the separably intercoupled rotary supply and receiving devices on which the warp and fabric end portions of the band are wound.

The supply device, 17, may as usual be a 5 spool. The receiving device, 18, may also be a spool. (It is separably intercoupled with the supply device, so as to rotate therewith, by a pin 19 in one engaged in a hole in the other, and it is arranged over the traverseefiecting structure 11 so that as the band is advanced in the direction of the arrows in Fig. '2 and so the warp 2 unwinds from the supply device and the fabric winds on the res. ceiving device the convolutions of the latter 15 will be laid in successive layers, all as heretofore.) But whether it be a spool, to wit, a, core having peripheral spaced flanges, or any other revoluble barrel having some other form ofspaced barriers between which the windings of the fabric are to'be located is not material. What is material, according to this invention, is that the spacing of these barriers'18 and the extent of traverse imparted to the part of the band which adjoins the receiving device are such, relatively to each other, that a space 20 is left between each end of each layer of fabric Wound on said device and the adjoining barrier.

In consequence of this, while I avoid the so faults incidental tothe end convolutions 0f the fabric end portion of the band building up against flanges or other barriers on the receiving device, if an end convolution slips off it remains in tractive control-of the rotary 85 body formed by the twodevices and their windings and it is retained in such control by the barrier until the attendant observes its abnormal condition and replaces it; and yet all but a very small portion of the'length 40 of the receiving device '(to wit, represented f by the spaces) can be filled with the windings.

Having thus fully described my invention what I claim is: V

In a loom, the combination of a frame,"

means for guiding the band of war and finished fabric, means for tensioning said band, rotary supply and receiving devices on which the warp and finished fabric are respectively wound journaled in the frame 00- axial with each other and separably inter.- coupled to rotate together, and means, while theband is being advanced in the direction to 'unwindthe warp and wind up the fabric, to

, cause traverse of the part of the band which adjoins the receiving device back and forth on and lengthwise of the latter between defi; nite limits, said receiving device having a barrier on its periphery arranged relatively out '50 ward of and spaced from each such limit. In testimonywhereof I aflix my signature.

' ARTHUR J HARRIS;

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