US1746773A - Selvage device for looms - Google Patents

Description

Fb. 11, 1930. M. HUGHES ET'AL 1,745,773

SELVAGE DEVICE FOR LOOMS I I Filed April 24, 1929 2 Sheets-Sheet l 1NVENTOR.5 Kouwo M HUGHES y Wm M KAY, 06 WW ATTORNEY.

Feb. 11', 1930. R. M. HUGHES ET AL SELVAGE DEVICE FOR LOOMS Filed April 24, 1929 2 Sheets-Sheet 2 INVENTORLS Fem/v0 M. HUGHES VAN WKAY,

ATTORNEY.

Patented Feb. 11,1930

UNITE FFECE ROLAND M. HUGHES AND VAN IV. KAY, OF GREIi-NVILLE, SOUTH CAROLINA 3 SELVAGE nnvrcr; non LOOMS Application filed April 24,

Our invention relates to improvements in looms, and has particular reference to devices adapted to insure the formation of a perfect selvage' at the edge of the fabric.

By the use of the device, catch cords are eliminated, -which are ordinarily used in weaving fabrics with filling clipped spot effects. The filling is ordinarily held in place at each selvage, by means of catch cords, and 1 in clipping the fabric after it comes from the loom, the catch cord has to be removed from along the selvage edge by hand. By the use of the device, as above stated, the catch cord is eliminated, thus making it possible to clip the fabric directly from the roll, as it comes off of the loom.

By means of the devices embodying the invention, it is possible to insert two picks of filling in the shed of the warp, without interlacing with the selvage, or without using extra harness and rigging. I The device, which is mounted adjacent each selvage edge of the fabric embodies a looper, which when in the active position, is passed through the unwoven selvage edge of the fabric. When the shuttle is thrown across the warps, the weft passes about the looper. This produces a loop in the weft, at the selvage, thus producing a perfect selvage. When the lay moves forward to beat up the weft, the hand rail of the lay actuates the device, to elevate the looper out of the active position, thus withdrawing the looper from within the looped weft. When the lay moves rearwardly from the beating up position, the looper returns to the active lowered position and engages behind the beaten in weft, immediately prior to the shuttle passing through the open shed, on its return movement, relative to that particular side of the loom.

The device is very simple in construction, having no sliding parts, that require frequent oiling, nor small springs to break and impair its operation. Its greatest advantage resides in its use in connection with such fabrics as leno, scrim, etc., where an extra filling not interlacing with the selvage is desired.

In the accompanying drawings, forming a part of this specification, and in which like 1929; Serial No. 357,850.

numerals are employed to designate like parts throughout the same, I

Figure l is a plan view of a portion'of a loom, showing two of the selvage attachments embodying the invention, applied thereto,

Figure 2 is a side elevation of the same, Figure 3 is an enlarged side elevation of one of the attachments, showingthe looper in the active position, and,

Figure i is a front elevatlon of the same.

In the drawings, wherein for the purpose of illustration, is shown a preferred embodiment of ourinvention, two of the selvage devices are shown, arranged adjacent to the opposite selvage edges of the fabric. These devicesare indicated as a whole by the numeral 5. Each selvage device embodies an inverted L-shaped bracket 6, which is arranged upon a flange 7 of the temple 8 of the loom andsecured thereto by screws 9.. The depending arm of each L-shaped bracket 6 has a pairwof spaced bearingslO, integral therewith.

Mounted toturn within the bearings 10 is a rock shaft 11, surrounded by a torsional coil spring 12, arranged between the bearings 10, and having one end thereof engaging the bracket 6, as shown, and its opposite end attached to the shaft 11, as shown at 13. The

spring 12 serves to turn the rock shaft 11 in one direction and also serves to prevent perceptible longitudinal movement of the shaft. Preferably formed integral with the rock shaft 11 is a block 14, having cylindrical openlugs 15 and 16, formed therein. I

. The numeral 17 designates a looper or thread catcher, which is curved at its upper end as shown, providing a downwardly directed point 18, which is adapted to pass betweenthe warps adjacent to the selvage edge of the fabric. The looper 17is circular in cross section, and is adj ustably mounted with in the opening 16, and may be turned therein, or moved longitudinally, and clamped in the adjusted position by means of a bolt '19,

having screw-threaded engagement within an opening. 20, formed in the block.

The numeral 21 designates an upstanding operatingarm, bent at its upper end into-a forwardly projecting horizontal extension 22.

This operating arm is circular in cross section and is adjustably mounted within the opening 15, and may be moved longitudinally therein and also turned therein, and is adapted to be clamped in a selected adjusted position by means of a bolt 23, engaging within a screw-threaded opening 24.

The horizontal extension 22 is arranged in the path of travel of the hand rail 25 of the lay, when this hand rail is moved downwardly and forwardly to beat up the warp.

The operation of the device is as follows: When the lay is in the rear position, or remote from the packing or heating up position, the torsional spring 12 holds the rock shaft 11 in such a position that the looper 17 is in the lowermost position, and the pointed end of the loop is arranged between the warps, adjacent to the selvage of the fabric, just behind the beat in weft. lVhen the shuttle is thrown across the warps from that side or selvage of the fabric, the weft will loop about the looper and will be held thereby against being pulled inwardly. Vhen the lay moves forwardly to beat in the weft, the hand rail 25 moves forwardly and downwardly toward the operating arm 21, and will engage the horizontal extension 22, shifting the operating arm 21 upwardly and raising the looper 17, thus freeing the loop of the weft from engagement with the looper, as inclicmted in dotted lines in Figure 3. As soon as the lay moves away from the beat in weft, the "spring 12 automatically returns the looper 17 to the lowermost position, wherein it passes between the warps adjacent to the selvage of the fabric and projects below the warps, to form the loop, as explained. The operation of the two devices at the opposite sides of the fabric is the same, and, of course, occur in proper sequence with respect to each other and with respect to the travel of the shuttle. The looper 17 of each selvage device engages behind the beaten in weft or assumes the lowermost position, immediately prior to the shuttle passingthrough the open shed on its return movement, relative to that particular side of the loo It is to be understood that the form of our invention, herewith shown and described, is to be taken as a preferred example of the same, and that various changes in the shape, size and arrangement of parts ma be resorted to, without departing from t 1e spirit of our invention, or the scope of the subjoined claims.

Having thus described our invention, we claim:

1. A selvage forming device for a loom, comprising an inverted substantially L- shaped bracket embodying an upper 'horizontal arm and a depending vertical arm,

the horizontal arm being secured to the flange of the temple, a bearing carried by the depending vertical arm, a rock-shaft mounted within the bearing, a torsional coil spring surrounding the rock-shaft and engaging the bracket and attached to the rock-shaft, a block carried by the rock-shaft to turn therewith and having openings, a looper mounted within one opening and extending upwardly from the block above the temple and having its free end bent downwardly and adapted to be arranged adjacent to the warps at the selvage edge of the fabric and to extend downwardly below said warps, and an operating arm mounted within the other'opening of the block and extending above the looper and having a part arranged in the path of travel of the hand rail of the lay to be shifted forwardly by the hand rail when the lay is moved inwardly to beat up the weft.

2. A selvage forming device for a loom, comp-rising a support to be mounted upon the temple of the loom, a bearing carried by the support and arranged beneath the temple, a rock-shaft journaled in the bearing, a spring engaging the support and rock-shaft to turn the rock-shaft in one direction, a block attached to the rock-shaft to turn therewith 1 and having openings formed therein, a looper adj ustably mounted within one opening and projecting upwardly above the temple, the free end of the looper being adapted to be moved downwardly below the warps, means to clamp the looper in the selected adjusted position, with relation to the block, an operating arm adjustably mounted within the other opening of the block and projecting upwardly above the temple and having a part in the path of travel of the hand rail of the lay, and means to clamp the operating arm in the selected adjusted position with relation to the block.

In testimony whereof we afiix our signai tures.

ROLAND M. .HUGHES. VAN W. KAY.

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