US1218710A - Loom. - Google Patents

Description

W. S. SOUTHWICK.

LOOM.

APPLICATION FILED NOV- 25. I913.

Patented Mar. 13, 1917.

8 SHEETS-SHEET I.

Wmcess e s lllllli'prll W. S. SOUTHWICK.

LOOM.

APPLICATION FILED NOV. 25. 1913.

Patented Mar. 13, 1917.

8 SHEETS-SHEET 2- Japan/5'07":

ig gs W. S. SOUTHWICK.

LOOM.

- APPLICATION FILED NOV. 25. 1913. 1,218,710. Patented Mar.13,1917

8 SHEETS-SHEET 3.

fii

' wwesseg:

W. S. SOUTHWICK.

LOOM. 5 I APPLICATION FILED NOV. 25, 19l3- 1,218,710. Patented Mar. 13, 1917.

8 SHEETS-SHEET 4.

W. S. SOUTHWICK.

LOOM.

APPLICATION FILED NOV. 25- I9I3.

Patented Mar. 13, 1917.

8 SHEETS-SHEET 6- W. S. SOUTIJWICK. LOOM.

APPLICATION FILED NOV. 25. 1913.

1 ,21 8,7 1 O Patented Mar. 13, 1917.

8 SHEETS-SHEET 7- .Zvwehifor M717 '6'. Salad/ 060. 6

W. S. SOUTHWICK.

LOOM.

APPLICATION FILED NOV- 25- I913,

1,218,710. Patented M21213, 1917.

8 SHEETS-SHEET 8.

unrrnn STATES PA Y OFFICE WILLIAM S. SOUTHWICK, OF CLINTON, MASSACHUSETTS, ASSIGNOB TO CLINTON WIRE CLOTH COMPANY, 015 BOSTON, MASSACHUSETTS, A-CORPORATION OF MASSAOHIL.

SETTS.

To all whom it may concern:

Be it known that I, WVILLIAM S. SOUTH- \VICK, a citizen of the United States, and resident of Clinton, in the county of VVorcester and State of Massachusetts, have invented certain new and useful Improve ments in Looms, of which the following is a specification.

This invention relates to looms, and especially to those which are used in the manufacture of Wire fabric. The object of the invention is to make the fabric perfect where one filling ends and where another begins. Imperfections often occur in the fabric at the point wherea new filling is begun. Such imperfection ma be due to the breaking or exhaustion o the filling and to the presence in the fabric of a short end of filling. Whenever it is necessary to place fresh filling in the shuttle, uniformity of the fabric may be insured by drawing out the last shot of the old filling and -moving the fell backwardlyso that the first shot of the new filling will occupy the same position in the fabric as that formerly occupied by the removed shot of the old filling.

The present invention contemplates following the method of procedure just described, and, as shown by the accompanying drawings, is embodied in a loom which has mechanism for automatically moving the fell of the fabric backwardly whenever the filling breaks or is exhausted,to the end that the fell of the fabric will be in the .desired position to receive a new filling member in the place of the filling member which has been removed.

This fell-reversing mechanism is connected with and operated in conjunction with suitable automatic stop mechanism which efiects the stopping of the loom whenever filling breaks or new filling is required. When the loom is subsequently started, the last remaining filling member in the fabric is reset by the beating-up mechanism and then the first new filling member is placed in position relatively to the fabric formerly occupied by the with drawn filling member. The fell is reversed in the present instance by reversing the rotation of the warp beam. This, however, is but one way of reversely moving the fell,

Specification of Letters Patent.

LOOM.

Patented Mar. 13, 1917.

Application filed November 25, 1913. Serial No. 802,930.

but it is the most convenient way now known to me.

Of the accompanying" drawings, which illustrate mechanism suitable for accomplishing the above-mentioned result:

Figure 1 represents an elevation of a portion of the left end of a loom for weaving wire fabric.

Fig. 2 represents a front elevation of the mechanism at the right of Fig. 1.

Fig. 3 represents a vertical section in the plane indicated by line 33 of Fig. 2.

Fig. 4 represents an elevation, partly broken away, of some of the elements shown at the right of Fig. 1. Fig. 5 represents an elevation of detecting mechanism by which the reversing of the warp-feeding mechanism is caused upon the failure of the filling.

Fig. 6 represents a top plan view of clutch mechanism by which the power for the loom is connected and disconnected.

Fig. 7 represents a vertical section looking toward the right-hand end of the loom and showing some of the mechanism which is mounted at the right-hand end.

Fig. 8 represents a top plan view of the mechanism included in Fig. 7

Fig. 9 is a vertical section showing on a larger scale the mechanism at the right of Fig. 7, the position of the parts in Fig. 9 indicating that the warp-feeding mechanism is in position to feed the warp backwardly.

Fig. 10 is a vertical section of the reversible warp-feeding mechanism.

Fig. 11 is a top plan view of the reversing mechanism shown at the right of Fig. 10.

Fig. 12 is a perspective view of a feeding pawl which causes the step-by-step feeding of the warp.

Fig. 13 is a section through the structure intersected by line 13-13 of Fig. 3.

Figs. 14 and 15 represent vertical sections of a modification adapted to be substituted for the mechanism shown by Fig. 3.

Fig. 16 is a perspective view including the warp beam, heddles, warp, woven fab ric and fabric take-up mechanism.

.The same reference characters indicate the same parts wherever they occur.

The left end piece of the main frame is indicated at 15, and the right end piece is indicated at 16. These end pieces are connected as usual by transverse beams one of which is indicated at 17. A lay, indlcated at 18, as is customary in looms for weaving wire fabric, is suspended from a rockshaft (not shown) above the loom. As shown by Fig. 1, the lay is illustrated in two positions, solid lines showing the lay near lts forward position, and dotted lines showing it at its rearposition. The usual reed is indicated at 19, and the woven fabric is indicated at 20. The warp strands 21 are shlfted by the heddles 21* (Fig. 16) to form the shed. Fig. 10 shows a warp beam 22 which is pr-o vided with a spur gear 23 by which it is positively rotated to let off the warp step by step at the required speed.

Fig. 16' shows diagrammatically take-up mechanism suitable for the purposes of the present invention, the operat on of which take-up mechanism is substantially the same as that in the patent to Strowbridge, 446,035. The important thing about the take-up mechanism is that it permits the fell to be moved backwardly. The woven fabric 20 passes over an idle roll 20", thence under a yielding take-up roll 20*, an l thence to' a driven reel 20. The reelhas a gear ind cated by dotted lines at 20, which gear 1s driven by a worm 20?. Whatever variation occurs between the speed at which the warp is let off and the speed at which the take-up reel is driven, is automatically taken care of by the yielding take-up 20" which is arranged to have bodily yielding movement. Roll 20 as shown is mounted between two weighted arms 20 which are arranged to swing upon a rod 20 Weights 2 0 are arranged upon the arms to maintain the desired tension upon the fabric and warp. It is the capacity of the roll 20 to rise which enables the fell to be moved backwardly for the purpose stated.

Figs. 1 and 6 include a crank 24 for swinging the lay forward and back. This crank and another crank like it are affixed to a shaft 25 at the two ends of the'loom. A belt pulley 26 is loosely mounted upon the shaft 25. This pulley has an internal fiat face 27 which constitutes one element of a friction driving clutch. It coacts with a friction member 28 which is aflixed to a disk 29. This disk is aflixed to the shaft 25, and the pulley is movable axially toward and from it, the pulley having for this purpose a hub which is provided with a peripheral groove 30. A shipper 31 mounted upona fulcrum 32 is employed to move the pulley toward and from the driven disk 29. The shipper has an arm 33 which is arranged to be engaged by set screws 34 carried by an arm 35. The fulcrum for the arm 35 is the same as that for the shipper, and the free end of the arm 35 extends loosely through a manually operative controller 36 at the front of the loom. The controller is loosely mounted upon a fulcrum stud 37 and is provided with a handle It extends through about the axis of its fulcrum to release the clutch. A spring 41 is connected to the controller and acts to disconnect the clutch when the controller is released from the shoulder 40. p

The driven member 29 of the clutch has an internal cylindric braking surface 42 which is adapted to be engaged by a brake shoe 43. (See Fig. 1.) One end of this brake shoe is mounted upon a fulcrum stud 44, and the other end is connected by a turnbuckle 45 with a lever 46 whose fulcrum is indicated at 47. This lever is connected by a link 48 with an arm 49 formed upon or affixed to the shipper. -When the controller 36 is. released, as hereinafter explained, to disconnect the power, the force of the spring 41 causes an application of the brake shoe 43 against the braking surface 42 of the disk 29, whereby the loom is stopped when the lay is a short distance from the woven fabric and moving toward the fabric.

When the loom is weaving, the warp is let off step by step in accordance with the takeup, positively-acting means being provided for rotating the warp beam step by step for this purpose. As shown by Fig. 10, the gear 23 which is compounded with the warp beam intermeshes with a pinion 50. This pinion'is compounded with a worm gear 51 through a shaft 52. The worm gear coacts with a worm 53 which is affixed to a shaft 54. This shaft is driven by gears 55 and :56. (See Fig. 11). The gear 56 is affixed to a shaft 57 upon which are mounted ratchet wheels 58 and 59. One of these ratchet wheels, in this instance wheel 58, is afiixed to the shaft, and the other is capable of rotating relatively to the shaft. The confronting faces-of these ratchet wheels are provided with bevel gears 60 and 61 respectively. These gears are always in mesh with a pinion 62 which is supported by a bracket 6 3 and p which causes the gears and their respective ratchet wheels to rotate in opposite directions. Step-by-step rotation of the shaft 57 is caused by a driving pawl 64 which may be caused to coact with either of the ratchet wheels. VVhenthe pawl is driving by coacting with the teeth of ratchet wheel 58 the warp beam is driven in the direction indicated by an arrow in Fig. 10, to let off the warp as usual; but when the driving pawl is driving by coacting with the teeth of the ratchet wheel 59, the warp beam is driven in the reverse direction. Under ordinary conditions the driving pawl remains n coactive relation to the ratchet wheel 58, and is only shifted to the ratchet wheel 59 upon the failure of the filling, to return the warp to the desired position for the resumption of weaving when the filling has been replenished. A complete explanation. of this operation is hereinafter set forth. I

The driving pawl 64 is carried by an arm 65 which is loosely mounted upon the shaft 57 and which is oscillated by a cam 66 and suitable connections which include a lever 67. cam roll 68, link 69, and spring 70. The fulcrum of the lever-.67 is indicated at 71. The cam (36 rotates once for each cycle of operations. The pawl carrier 65 is provided with a stud 72 upon which the pawl 64 is mounted and adapted to be shifted along the length of the stud from one ratchet wheel to the other. provided with a. finger 73 which travels back and forth in a segmental shipper 75 whose curvature is concentric with relation to the shaft 57. The shipper 75 has a groove in its under surface for the reception of the finger 73. The shipper is mounted upon a rod 76 extending laterally from the frame piece 16, and is adapted to be moved along the rod for the purpose of shifting the pawl from one ra tchet wheel to the other. A portion of the shipper 75 extends through a I .slot 77 in a stationary guide 78 which provents movement of the shipper about the axis of the rod 76. The portion of the shipper which extends through the slot 77 is connected by a link 79 with one arm of a bell-crank 80. The fulcrum of the bell-crank is indicated at 81. The other arm of the bell-crank is connected to the rear end of a rod 82. The forward end of this rod is pivotally connected to an arm 83 Whose fulcrum 84 is a stud projecting from the frame piece 16. This arm has a pin-and-slot connection With an arm 85 which is afiixed to a rockshaft 86. The rockshaft extends afforded by brackets 87 affixed to the crossbeam 17.

I have shown in Fig. 3 mechanism arranged to be operated to stop the loom when the lay is near the forward limit of its beating-up movement, and I have shown by Figs. 14 and 15 an alternative mechanism adapted to be substituted for that shown in Fig. 3, the mechanism shown by Figs. 14 and 15 being adapted to accomplish the same result but at an earlier stage in the operations. I will describe first the modification shown by Fig. 3. An arm 88 affixed to the rockshaft 86 engages the under side of a bunter 89 when the loom is weaving, to support the free end of the bunter above the path of a striker 90 carried by the lay. The bunter 89 is pivotally connected at 91 to a swinging arm 92 which hangs from a The pawl is pivot 93. The pivot 93 is supported by a racket 94 which is affixedto the crossbeam 17. A spring 95 (Fig; 2) normally holds the arm 92 against a stop 96 projecting from the bracket. I

As shown by Fig. 13, the striker 90 is formed to provide an open space 97 for the bunter 89, so that the lay ma not cause movement of the hunter when t e bunter is elevated as shown by Figs. 3 and 13. When the bunter is released by the arm, 88 it may drop to a stop 98 which is adjustable, to cause the free end of the bunter to stand in the path of the striker. The striker is formed with a notch 99 to receive the tip of the bunter to insure the desired coaction of the striker and bunter. A light spring 100 (Fig. 3) is compressed between the hunter and a portion of the bracket 94, and its purpose is to depress the hunter when the bunter is released by the arm 88.

When the arm 92 is moved away from its stop 96 by the coaction of the striker 90 and bunter 89, the lower end of the arm 92 acts upon an arm 101 which is affixed to a rockshaft 102. This rockshaft is mounted in bearings, one of which is afforded by the bracket 94 and the other by a bracket 103 affixed to the frame piece 15. The movement of the arm 92 is in excess of the movement of the arm 101, because the free upper end 104 of the arm 101 is offset so that the free end of the arm 92 may traverse this offset portion after it has moved the arm 101 as far as possible. The offset portion 104 serves to keep the arm 101 in the position to which it is moved, until the arm 92 returns to its stop 96. The function of the rockshaft 102 is to release the controller 36 from its shoulder 40.

For this purpose an arm 105 is aflixed to the rockshaft. This arm has a lateral projection 106 which lies behind an arm 107 which is loosely mounted upon the rockshaft 102. The arm 107 has a projection 108 which lies behind the controller 36 when the latter is in position to hold the clutch connected for driving the loom. Now, therefore, the forward movement of the lay is adapted to release the clutch through the following connections: striker 90, bunter 89, arm 92, arm 101, rockshaft 102, arm 105, arm 107, projection 108, and controller 36,the latter, after being pushed out of engagement with the shoulder 40, being actuated by the spring 41 as hereinbefore explained to release the clutch and apply the brake.

Prior to the operation of the stop mechanism just described other mechanism which has not yet been described is brought into operation during the next to the last beating-up operation, for the purpose of reversely moving the fell before the loom comes to rest. The reversing mechanism is controlled by the filling through the medium of two filling detectors 109. These detectors are mounted upon a rockshaft 110 which extends across the loom, under the fabric. As shown by Figs. 2 and 9, each detector is split and adapted to be clamped upon the rockshaft by a clamping screw. The detectors are arranged close to the selvages of the fabric and are adapted to be adjusted toward and from each other to accord with the width of the fabric. Figs. 1 and 1 show a pick of filling which has just been beaten up to the fabric, which pick is against the detectors 109. The detectors are so weighted with reference to their rockshaft 110 that they normally lean toward the lay, and as each pick of filling is carried forward by the reed the detectors are pushed forward by the last filling member. The rockshaft 110 carries an arm 111 which has pin-and-slot connection 112 with a hunter 113. This hunter is mounted between its ends on a pivot stud 111 carried by an arm 115. This arm is loosely mounted on the rockshaft 102. The rear end of the hunter 113 is adapted to coact with a striker 116 which is carried by the lay. The striker is formed with a notch 117 for the reception of the tip. of the hunter to insure the desired coaction. The hunter normally rests upon an adjustable stop 140 by which its tip is supported in the path of the striker 116. This position of the hunter corresponds with the normal position of the filling detectors, as shown by Fig. As the detectors are moved by the beating-up operation to the position shown by Figs. land 1, the tip of the hunter is lifted out of the path of the striker 116, so that there will be no coaction of the striker and the hunter. Upon the failure of the filling there will be nothing to lift the hunter, and consequently it will he moved forward upon the next forward stroke of the lay. This will cause a movement of the arm 115 toward the front of the loom. The free upper end of this arm is connected by a link 118 with an arm 119 which is aflixed to the rockshaft 86. This movement of the rockshaft is the one which releases the hunter 89 as hereinbefore explained, in consequence of which the controller 36 is released from the shoulder 40. This same movement of the rockshaft 86 causes a reversal of the warp let-off mechanism by shifting the,driving pawl 61 from the ratchet wheel 58 to the ratchet wheel 59. The shifting of the pawl for moving the fell hackwardly occurs simultaneously with the coaction of the hunter 113 and striker 116, and the effective movement of the pawl occurs during the next beating-up movement.

The connections whereby the roekshaft 80 shifts the pawl 64 include the arm 85 which is affixed to the rockshaft, arm 83, connecting rod 82, bell-crank 80, link 79, and shipper 75. In order to prevent the driving pawl from being caught by the ends of the ratchet, the pawl is beveled as indipivot 135 to the member 129.

cated at 120 (Fig. 12). These beveled surfaces cause the free end of the pawl to ride up over the tops of the ratchet teeth while being shifted laterally the pawl thereafter settling between the teeth when it is retracted prepa-ratoryto a driving movement.

Referring to Figs. 7 and 9, a locking pawl indicated at 121 serves to lock the shipper 7 5 in position for reversely driving the warp. \Vhen the driving mechanism is in position for the forward drive, this locking pawl rests upon a lug 122 carried by the connectmg rod 82, as shown by Fig. 7. \Vhen the connecting rod is shifted to reversing position, the locking pawl 121 is released so that a projection 123 on the pawl may coact with the lug 122, the lug thereafter settling back against the surface 124 of the pawl in consequence of the stress of a spring 125 which is anchored to the stud 81 and acts upon the arm 83. The connecting rod 82 remains locked until the completion of the first beating-up movement of the lay following a replenishment of the filling. At this time the locking pawl 121 is lifted to release the connecting rod 82 so that the spring 125 may shift the driving pawl 61 back to the forward driving ratchet wheel 58. The mechanism for this purpose is shown by Figs. 7, 8 and 9. Referring first to Fig. 7, which shows the parts n position for the forward drive, the looking pawl 121 is compounded'with an arm 126. These two elements are mounted upon a fulcrum stud 127 and are subject to the stress of a spring 128 which tends to move them to the position shown by Fig. 9. A member 129 is pivotally connected at 130 to* the upper free end of the arm 126 and extends forwardly. A block 131 Which for convenience of description may be termed a hunter is afiixed to the member 129 and is adapted to be engaged by a striker 132 carried by the lay. The free end of the member 129 rests upon a helical spring 133. This spring is mounted upon a follower 131, one end of which is connected by a The other end of the member 134 occupies a recess 136 in the forward end of the member 129, a portion 137 of the member 129 confining the free ends of the members 129 and 13 1 so that they cannot become too widely separated by the spring 133. The member 134: overlies a stationary cam member 138 which is mounted upon the frame piece 16. As shown by Fig. 7 the hunter 131 is below the striker 132. \Vhen the locking pawl 121 moves to locking position as shown by Fig. 9, the member 129 is moved at the same time and by the same spring 128 toward the rear of the loom, thus causing the member 134; to ride up on the cam 138. movement occurs when the lay is in its forward position, the hunter 131 strikes the As this.

bottom of the striker 132, bit this does not arrest the movement toward the rear, because the spring 133 enables the member 134 to continue to rise after the-upward movement of the member 129 has been arrested. The member 129 therefore remains in the position shown by solid lines in Fig. 9 until the lay has receded sufiiciently to release the hunter 131. The member 129 is thereupon raised by its spring 133 to the position shown by dotted lines, in which position the bunter 131 stands in the path of the lower end of the striker 132, where it remains until carried forward by the next beating-up movement of the lay. The loom, however, comes to rest before the bunter 131 is carried forward, and it is during this period of rest that the filling is replenished. As this invention does not, deal with the manner of replenishing the filling, it will be suflicient to state that a new supply of filling may be inserted manually into the shuttle while the loom is at rest.

As previously stated, the loom comes to rest while the lay is moving forward but before the lay has reached its extreme forward position. Assuming now that new filling has been placed in the shuttle, and that the loom is in readiness for weaving, the attendant may grasp the handle 38 of the controller and swing the controller to driving position as shown by Fig. 2. -As soon as the power is connected the lay moves forward to complete its hitherto incomplete forward movement, and at the same time the striker 132 coacts with the bunter 131, carrying the latter forward. The locking pawl 121 is thus positively lifted and releases the connecting rod 82 so that the spring 125 may shift the driving pawl 64 back to the ratchet wheel 58. During this movement of the bunter the follower 134 is carried forward beyond the effective portion of the cam 138, so that when the bunter is released by the striker the free ends of the members 129 and 134 will drop to their initial position, shown by Fig. 7. The attendant, after placing the controller 36 behind the shoulder 40, may leave the loom until the latter is again automatically stopped in consequence of the failure of the filling. The first effect of the reed upon the starting up of the loom is to reset the preceding filling member, and thereafter the reed operates upon the new filling in the usual manner.

The cycle of operations, briefly reviewed, is as follows: Upon the failure of the filling, the filling detectors 109 remain in the position shown by Fig. 5. This leaves the bunter 113 in position to be actuated by the striker 116. The forward movement of the bunter 113, which is occasioned by the striker, results in turning the rockshaft 86 so as to simultaneously shift the driving pawl 64 to The warp let-ofi' mechanism remains in position to drive the warp backwardly. The

attendant may now place new filling in the shuttle and withdraw the last pick of the old filling. When the loom is in readiness for weaving, the attendant shifts the controller to starting position and the lay coinpletes its forward movement, thus shifting the driving pawl 64 to the ratchet wheel 58 to turn the warp beam forwardly. The loom is thus adjusted to weave as usual until the filling again fails to lift the bunter 113 out of the path of the striker 116.

The modification shown by Figs. 14 and 15 is adapted to cause the lay to stop at the beginning of its final forward movement, whereas the modification shown by Fig. 3 causes the lay to stop near the end of its final forward movement. The advantage of the modification shown by Figs. 14 and 15 is that it allows for greater over-travel of the loom when the power is disconnected and the brake applied. The mechanism shown by Figs. 14 and 15 is operated while the lay is moving to the rear and when it is very close to its back center; but the momentum of the moving parts carries the lay over its back center and a short distance forward therefrom before the loom comes to rest.

A lay catch or hook 89 answers the same purpose as the bunter 89 of Fig. 3. The forward end of this lay catch is pivotally connected at 91 to a lever 92 whose fulcrum is indicated at 93. The rear end of the lay catch has an abutment 99 which is clockwise direction as previously described,

in consequence of failure of the filling, it causes the cam 88 to lift the abutment 99' into the path of the lay. The lay at such time is near its front center. As the loom continues to move after the rockshaft 86 is turned, the lay strikes the abutment 99' and,

which is engaged by the lever 92, the two levers having coactive teeth. The movement thus imparted to the rockshaft 102 causes the disconnection of the power and the application of the brake, as previously explained, through the operation of the mechanism shown by Fig. 1. The levers 101' and 92 and lay catch 89' are normally held in the position shown by Fig. 1+1, by a spring 95 which is coiled about the rockshaft 102 and attached to the lever 101. Although the force of gravity is generally sufficient for holding the lay catch against the cam 88, a spring may be attached to the lay catch for that purpose if desired.

Having thus explained the nature of my said invention and described a structure and use of the same, although without attempting to set forth all the forms in which it may be made or all the modes of its use, what I claim is 1. In a loom, the combination with letback take-up mechanism, of reversible let-off mechanism, and means controlled by the filling to cause said let-off mechanism and said take-up mechanism conjointly to feed "the fell backward in consequence of failure or breakage of the filling.

2. In a loom, the combination with letback take-up mechanism, of warp-engaging means arranged to pull the fell back positively, and means controlled by the filling to cause said warp-engaging means to act as aforesaid in consequence of failure or breakage of the filling.

3. In a loom, the combination with letback take-up mechanism, of a filling detector, and means controlled by said detector and arranged to pull back the fell positively a distance equal to one pick, in consequence of failure or breakage of the filling.

4. In a loom, the combination with letback take-up mechanism, and a filling detector, of means controlled by said detector to feed the fell backward in consequence of failure or breakage of the filling, and stop mechanism controlled by said detector to stop the loom after the fell has been fed backward by said feeding means.

5. In a loom, warp let-off means and fab-, ric take-up means arranged to cooperate to feed the fell forward or backward, means arranged to engage each new filling member in the shed to detect the presence of such filling member, and means controlled by said detecting means to cause said let-off means and take-up means conjointly to feed the fell backward in consequence of failure or breakage of the filling.

6. In a loom, reversible warp-feeding means, disconnectible means for driving the loom, means for coacting with each new filling member in the shed to detect the presence of such filling member, means controlled by said detecting means for causing a reversal of said feeding means in consequence of failure of coaction between said detecting means and a filling member, and means controlled by said detecting means for disconnecting said driving means after a reverse feeding movement of said feeding means.

7. In a loom, the combination with a warp beam, of operating means capable of driving said beam forward or back to let off or pull back the warp, filling-controlled means arranged to adjust said operating means to pull back the warp in consequence of failure by said detecting means for adjusting said.

feeding means to feed the warp members backwardly in consequence of failure of coaction between said detecting means and a filling member, means controlled by said detecting means for disconnecting said driving means after a backward feeding movement of said feeding means, and means arranged to be operated by a driven element of the loom for adjusting said feeding means to feed the warp members forwardly after such backward feeding.

9. In a loom, reversible warp-feeding means, disconnectible means for driving the loom, means for coacting witheach new filling member in the shed to detect the presence of such filling member, means controlled by said detecting means for adjusting said feeding means to feed the warp members backwardly in consequence of failure of coaction between said detecting means and a filling member, means controlled by said detecting means for disconnecting said driving means in consequence of failure of coaction between said detecting means and a filling member, and means arranged to be operated by a driven element of the loom for adjusting said feeding means to feed the warp members forwardly after such backward v to stop the loom while said operating means is adjusted to pull back the fell as aforesaid, and means arranged to readjust said operating means to let forward the fell upon restarting the loom.

11. In a loom, disconnectible driving means, warp let-off means capable of adjustment to feed the fall backward, take-up means arranged to let the fell move backward, means arranged to engage each new filling member in the shed to detect the presence of such filling member, means controlled by said detecting means to adjust said let-off means to backward feeding position in consequence of failure of engagement of said detecting means by a filling member, and meanscontrolled by said detecting means for disconnecting said driving means in consequence of such failure as aforesaid.

12. In a loom, in combination, two fillingengaging members arranged at opposite sides of the path of the fabric, said members being movable by the filling, a rockshaft connected to said filling-engaging members to be turned by the filling-imparted movement of either one of said members, disconnectlble driving means, and mechanlsm controlled by said rockshaft to cause disconnection of said driving means in consequence of failure of coaction between a filling member and one of said filling-engaging members, said mechanism being arranged to be rendered ineffective by filling-imparted move- ;engaging members arranged at opposite sides of the path of the fabric, said members being movable by the filling, a rockshaft, said filling-engaging members being arranged upon and fastened to said rockshaft to transmit movement of the filling to said rockshaft, disconnectible driving means, and mechanism controlled by said rockshaft to cause disconnection of said driving means in consequence of failure of coaction between a filling member and one of said filling engaging members, said mechanism being arranged to be rendered ineffective by fillingimparted movement of said rockshaft.

11. In a loom, in combination, means arranged to pull back the warp and fell, stop mechanism, fillingdetecting means, and connections running from said filling-detecting means to said pull-back means and to said stop mechanism respectively for causing the two latter to operate in consequence of failure or breakage of the filling.

In testimony whereof I have afiixed my signature, in presence of two witnesses.

WALTER P. ABELL, P. W. PEZZETTI.

Images