US1692192A - Narrow fabric loom - Google Patents

Description

Nov. 20,1928.

J. C. WARD NARROW FABRICLOOM Filed Nov. 19, 1926 3 Shegts-Sheet 1 Nov. 20, 1928.

J. C. WARD NARROW FABRIC LOOM 3 Sheets-Sheet Filed Nov. 19, 1926 Nov. 20, 1928. 1,692,192

J. c. WARD NARROW FABRIC LOOM Filed NOV. 19, 1926 5 Sheets-Sheet 5 Patented Nov. 20, 1928.

UNITED STATES PATENT-OFFICE.

JOHN G. WARD,'0F BOSTON, MASSACHUSETTS, ASSIGNOR TO MILTON WEAVINGCOM- PANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

NARROW FABRIC LOOM.

Application filed November 19, 1926. Serial No. 149,482.

This invention relates to a loom and more particularly to a loom for weaving narrow fabrics.

One obj cct of the invention is to provide a loom of the character specified, of novel and improved construction which is capable 0 operating at high speed with minimum vibration and of economically weaving narrow fabric in a simple and highly eflicient manner. i

' A further object of the invention is to provide a loom of the character. specified, with tension regulating mechanism of novel and improved construction,

mechanism for controlling the operation of the loom in the event of variation in the tension of the filling thread from a normal amount. I

With these objects in view,'the invention. consists inthe loom and in the COI1StIllCt1OI1,-

combinations and arrangements of parts hereinafter described and particularly po1nted out in the claims at the end of the speci-.

fication.

In the drawings illustrating the preferred form of the invention, Fig. 1 is an elevation of a suflicient portion of a loom embodying the features of the present invention, to enable the same to be clearly understood; Fig. 2

a plan of a portion of the loom illustrated in Fig. 1; Fig. 3, a vertical sectional View taken on line 3-3, Fig. 2, and Fig. 4, a plan of a portion of the loom shown in Fig. 2 i1lustrat ing the parts in another position of operation.

Referring to the drawing, the loom illustrated therein is provided with the usual shed-forming mechanism including heddles 10, a number of which are shown in Fig. 1,

and which are preferably of the usual con- 4 struction and operate in the usual manner.

The filling thread is laid in the shed by a shuttle 12 as will be described and the filling is beaten up by the usual reed 14 on the lay 15 mounted upon the lay shaft16 and prefer- 4 ably oscillated in the usual-'manner from the driving shaft of the loom, through the usual crank '17and connecting rod 18. The fabric,

- as it is woven, passes over the breast beam or plate 20 and is taken up upon a positively driven take-up roll or drum 22, herein shown as intermittently rotated by a worm 24 and co-operating worm gear 26 'on the end of a shaft 27 upon which the take-up roll or drum 22 is mounted. The worm 24 is inter-mitand with novel tently rotated by a ratchet 28 and oscillatory pawl 29, the latter being preferably actuated from the lay shaft 16 through a'crank 30 upon the end thereof, and an'adjustable connecting link 31 (see Fig. 2): The fabric in f-' passing around the take-up roll passes over an idler roll 32 and an idler roll 34, the latter being mounted on a pivoted arm 35 and held by the tension of a spring 36 against the take-up roll or drum 22 to produce the requisite friction between the fabric and the drum. The woven fabric may and preferably will be Wound upon the usual wind-up roll not shown.

In accordance with the present invention, the shuttle 12 is positively reciprocated in a novel and superior manner to lay the filling thread in the shed, at a high rate of speed and with f minimum vibration, and as herein shown is arranged to be moved in a stationary shuttle race 40, preferably of circular shape and comprising two parts, 41, 42 spaced apart at their center suificiently to permit the lay 15 to pass between them when beating up the filling and secured rigidly upon the loom frame.

The shuttle 12 is illustrated as comprising a curved base plate 43 of a length suflicient to bridge the space between the parts 41, 42 of the shuttle race. The sides 45 ofthe base plate 43 are tapering to fit under the correspondingly shaped overhanging guides 46 at the sides of the shuttle race to thereby retain the shuttle in its position upon the shuttle race and to .prevent upward displacement thereof. The shuttle 12 is provided with a bobbin 50, preferably mounted upon the base plate 43 in any usual or preferred manner, and as herein shown the bobbin is mounted upon rearwardly extending arms 54 secured to the base plate 43 and is removably'held therein by spring 55 (see Fig. 2).

Provision is made for retarding the rotation of the bobbin as the filling thread pays off from the same'to thereby place a tension .upon the filling thread, and for this purpose a friction member or pad 57 preferably of against the rear of the bobbin, and the spring 58 is fastened at its forward end to a slotted bracket 59 adjustably secured by a screw 600 to the base plate43 of the shuttle.

Provision is made for positively oscillating the-shuttle 30 back and forth in its raceway,

and for this purpose the shuttle is arranged to be engaged by positively driven pusher pins 60, 61 which are Vertically movable and are raised and lowered at predetermined times to engage and disengage the shuttle.

As herein shown, the pusher pins 60, 61 slide vertically in guide members 62, 63 preferably comprising bosses upon the forked ends of an arm 64 secured upon the upper end of a vertical shaft 66, journaled in suit- .able hearings in cross members 68 comprising a part of the loom frame.

The vertical shaft 66, arm 64, and pusher pins 60, 61 are positively oscillated from the main driving shaft 70 of the loom through gears 71, 72 upon the driving shaft 70 and a crank shaft 73'respectively, through a crank 74, connecting rod 75 to a crank arm 7 6 upon a countershaft 77. The oscillations of the countershaft 77 are transmitted through a beveled gear 78 and a pinion 7 9 upon the lower end of the vertical shaft66 to the shuttle-operating arm 64. I

Provision is made for raising and lowering each of the pusher pins 60, 61 to cause the upper ends thereof to enter and recede from the holes in the under side of the base plate 43 of the shuttle 12, in order that theshuttle may be moved through the left-hand portion of its travel by the pusher pin 60, through the right-hand portion of its travel by the pusher pin 61, and through the central portion of its travel by the combined action of both pusher pins 60, 61.

Accordingly the lower ends of the pusher pins 60, 61 are pivotally connected through links 80, 81 to a cross arm 82 secured upon a shaft 83 journaled in bearings 84. The shaft 83 is provided with a member 85 having two arms 86 carrying cam rollers 87, 88. The cam rollers 87, 88 are arranged to co-operate with separate cams 90, 91 arranged as shown in Figs. 3 and 4, and with this construction when the actuating arm 64'is swung to the left, the cam roller 87 engages the high part of the cam 90 and operates through the arm 86, shaft 83 and arm 82 to raise the usher pin 60 and cause the upper end thereo to enter the hole in the bottom of the base 43 of the shuttle. In this manner it will be observed that the shuttle isdriven through the left-hand portion of its travel by the pusher pin 60.

When the actuating arm 64 is traveling through the right-hand portion of its arc of oscillation, the cam roller 88 engages the high part of the second cam 91 and operates to cause the pusher pin 61 to enter thesecond hole in the bottom of the base 43 of the shuttle. It will, therefore. be apparent that when the shuttle is traveling through the righthand portion of its are of oscillation, it is actuated by the pusher pin 61. The low parts of the cams 90, 91 are arranged as shown in Fig. 3, so that during the interval that the shuttle 12 is bridging the space in the huttle e shuttle to positively control its phusher pins 60, 61 are in engaget in shown provision is made for stopping the loom in the event that the filling becomes slack or in the event of breakage thereof.

' As herein shown, the mechanism for performing this operation includes feeler members 100, 101 pivotally mounted upon a plate or member 104 secured to and extending forwardly from the shuttle. Each feeler memher 100, 101 is provided at its forward end with an eye through which the filling thread is drawn as it passes from the bobbin to be laid in the shed. The forwardly extended plate 104 is also preferably provided with a delivery eye 204 through which the filling passes, and is arranged as shown in Figs. 2 and 4 to deliver the filling at a point near the fell of the cloth.

The feeler members 100, 101 are provided with light springs 105, 106 connecting the rear ends thereof with pins 108, 109 upon the plate 104, whereby the forward ends of the feeler members are normally urged apart by the springs and are drawn together by the tension upon the filling thread as will be apparent from inspection of Figs. 1 and 4.

The rear portion of one of the feeler members is made of suflicient len h, so that when the tension upon the filling t read is removed, either for the reason that the filling thread becomes broken or slack, the feeler member 100 is swun outwardl from the position illustrated in ig. 2, to t at illustrated in Fig. 4, in which a stop pin 110 depending from the under side of the rear of the feeler member 100 (see Fig. 1) engages the side of the plate 104 projecting forwardly from the shuttle.

After the-filling has-become slack ov -broken and the shuttle reaches near the end of its oscillation toward the left, the rear end of the feeler member 100 is positioned in the path of an upstanding 1;.g 112 upon the endof a rod 113 yieldingly mounted upon the up turned end of a lever 114 pivoted upon the cross member 68 of the loom frame.

As the shuttle continues to be positively moved to the left in completing its travel in that direction, the feeler member 100 through engagement of the pin 110 with the lug' 112, (see Fig. 4) moves the lu 112 and causes the ill'fm 114 to be swung a sort distance to the The swing arm 114 is provided with a de pending portion 115 in which a hook-shaped rod 116 is mounted, the hooked end 117 of which is arranged to engage a pin 118 up- Standing from a cam member 120 pivoted upon an arm 121 to have a movement in a vertical plane (see Fig. 2). 1

The arm 121 is pivoted upon the loom frame as shown in Figs. 1- and 2. The movement of the swing arm 114 to the left as above described operates through the hook 117 to swing the cam member 120 vertically into the position illustrated in Fig. a, wherein the cam surface 125 is positioned in the path of the lay 15, 501113.13 when the latter beats up, the action of the lay upon the cam surface 125 operates to swing the arm 121 to the left (see Fig. 4). The arm 121 is provided with a striker member 126 (see Fig. 1) arranged to engage an arm 127 upstanding from and secured upon the'end of a countershaft 128 journaled in suitable bearings inuthe loom frame and extending rearwardly to near the main driving shaft 70. The countershaft 128 is provided at its rear end with an upstanding arm 130 provided with a portion 131 adapted to be received within a groove 132 in a movable member 133 of the main driving clutch for the loom,-iwhich clutch may be of any usual or ,.p referred construction arranged to be disengaged when the movable member 133 is moved to the left in Fig. 2.

During the normal operation of the loom the pivoted cam member 120 is maintained in its lowered or inoperative position out of the path of the lay by gravity as illustrated in Fig. 3, and the striker member 126 is held in engagement with the crank 127 by a spring 1440.

From the above description, it will be observed that whenever the filling thread becomes'sufliciently slack to permit the rear of the pivoted; feeler member 100 to be positioned in the path of the lug 112, then upon the next stroke of the shuttle to the left, the loom .will be stopped by throwing out the clutch upon the main driving shaft.

After the operator has restored the tension upon the filling to a normal amount, he

, may restart the 100m by throwing in the clutch by' the usual shifting lever (not shown).

In order to insure unrestricted passage of theshuttle 12 through the shed, the shuttle may and preferably will be provided with a thread guard 220, herein shown as comprising a wire rod bent into the form illustrated in Figs. 1 and 2, and secured by screws 222 to the upper surface of the base plate 43 of the shuttle.

The thread guard 220 is adapted to extend above the bobbin 50 to engage the upper warp threads forming the shed and-maintain them out of contact with the remaining portions of the shuttle, so that as the shuttle is oscillated rapidly through the shed, the upper warp threads slide over the wire thread guard, enabling the shuttle to be passed through the shed with little or no liability of thread breakage.

In the illustrated loom, the breast plate or beam 20 is shown as adjustably mounted upon the loom'frame to be capable of vetrical adjustment.

This is accomplished by bolts 225 extended through suitable slots in the angle plate 226 forming the support, for the breast beam 20.

This vertical adjustment of th e breast beam 20 enables. the upper and lower warp threads forming the shed to be accurately positioned with relation to the path of the shuttle so as to minimize breakage of the warp threads.

While the preferred embodiment of the in vention has been illustrated and described, it is to be understood that-the invention may be embodied in other forms within the scope of the following claims.

What is claimed is:

1. A narrow web loom, having in. combination, a lay, a clutch controlling the operation of the loom, a shuttle race, a shuttle movable therein, means for positively reciprocating the shuttle, a feeler member pivoted upon the shuttle and arranged to be moved into an operative position when the tension upon the filling falls below apredetermined value, a member adapted to be engaged by the feeler member upon movement of the shuttle when the feeler member is in an operative position, a cam adapted to be positioned in the path of the lay by movement of the said member to be engaged by said lay, and connections between shuttle movable in said race, a lay movable between said race members, a cam normally out of the path of said lay, means for moving said cam into the path of said lay to be engaged by the latter, said means being controlled by the tension on the filling thread carried by said shuttle, and means for stopping said loom rendered active by the engagement of said cam with said lay.

3. A loom having in combination a substantially horizontal shuttle race, a shuttle movable therein, a shuttle-operating arm oscillating in a plane below the shuttle race and substantially parallel therewith, Vertically arranged pusher members extended through said operating arm substantially at right angles thereto, a rock-shaft movable with said oscillating arm, means for connecting said pusher members with said rock-shaft, and means for rocking said rock-shaft.

4. A loom having in combination a lay, a circular shuttle race comprising two members spaced apart and between whiclr the lay passes in beating up the filling, a shuttle movable in the shuttle race and of sufficient length to bridge the space between the members thereof, means for positively oscillating the shuttle, comprising a shuttle-operating arm located below the shuttle race, vertically reciprocating pusher members extended through said operating arm substantially at right angles thereto, a rock-shaft located below said shuttle-operating arm a rocker arm mounted on said rock-shaft and movable in a Vertical plane, means for connecting the lower ends of the pusher members to said rocker arm on opposite sides of said rockshaft, a second rocker arm mounted on said rock-shat'tan'd cams co-operating with the second rocker arm to rocksaid rock-shaft and effect vertical reciprocation of said pusher members.

5. A narrow Web loom having in combination a lay, a shuttle race, a shuttle movable therein, means for positively reciprocating the shuttle in the shuttle race, means forcontrolling the operation of the loom in accord-' ance with the tension upon the filling thread,

including a feeler member co-operating with said feeler member eo-operates to enable the swing arm to be moved by the shuttle when the feeler member is in its operative positioma lever, a movable cam mounted on said lever and normally out of the path of said lay, means carried by said swing arm and c'o-operating with said cam to move it into the path of said lay to be engaged by the latter when the swing arm is moved by said shuttle, and means for controlling the loom with which the camcarrying lever co-operates to stop the loom when said lever is moved by the lay engaging said cam.

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

JQHN c. WAR-D.

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