US2881807A - Loom stopping means - Google Patents

Description

April 14, 1959 c. G. MOON LOOM STOPPING MEANS Filed April 4,. 1955 4 Sheets-Sheet 1 MOTOR VOLTAGE V INVENTOR. ,/CL|FFORD 6. Moon:

A TTORNEY c. G. MOON LOOM STOPPING MEANS April 14, 1959 4 Sheets-Sheet 2 INVENTOR. CLIFFORD 6. Moon:

Filed April 4, 1955 A ORNE Y 4 Sheets-Sheet 3 IIIIII N .w G R NM m v K G l lirl iinm mm. Tm UL. 0 Wm F .n @2 w 8H 8 .t mm L S Q n m9 5 Q2 c MH 3 a 5 o n m m\\\ O V. m R m2 mo 08 O B "m g Q Mm I b n ma i 8 m2 l. V .H .P. MU ll! \ll 1111 \l I 5 5 x c. 6." MOON LOOM STOPPING MEANS Filed April 4, 1955 April,l4, 1959 5 k E m N2 62 0Q m2 m3 0 m April 14, 1959 c. G. MOON LOOM STOPPING MEANS 4 Sheets-Sheet 4 Filed April 4, 1955 8 E mw l k R f m m N m m W H m. m 1% m a W w: E E m V. 5 L W J ll u r u 0 x 5 D q l "h" E Q N: 85 02 0: m2

United States Patent LOOM STOPPING MEANS Clifford G. Moon, Hopedale, Mass., assignor to Draper Corporation, Hopedale, Mass., a corporation of Maine Application April 4, 1955, Serial No. 499,110

13 Claims. (Cl. 139-336) This invention relates to loom stopping means, and more particularly, to such means for stopping the loom at particular positions within the cycle, also to a novel mechanism for effecting transfer from a center fork type of filling stop means.

It is a general object to simplify and to make easier the control of the loom.

A further object is that of providing stopping means which shall stop the loom in the most advantageous position for repairing a defective warp or filling thread, also, to provide simple push button controls at a convenient position on the loom for selectively stopping the loom through the automatic stop mechanisms in either the harness level or open shed positions.

-It is a more specific object to devise such mechanism which shall be largely mechanical as contrasted to electrical in its construction and therefore very inexpensive and easily serviced.

A further object is that of providing for making single picks by stopping the loom from the filling stop side and then using the shipper lever to start the loom.

Another object is that of using the center fork motion for transferring a full bobbin rather than stopping the loom at filling failure for any reason, and then stopping the loom if a fault still persists after two successive attempts at transfer.

Other objects will become apparent from the following more detailed disclosure.

In looms for weaving it is common practice to employ stop motions which bring the mechanism to a stop upon failure of a warp thread, a filling thread or at so-called, mechanical stops as, e.g., when a shuttle is too improperly boxed for the loom safely to continue in operation. There has been some eflort spent in the direction of stopping at a definite position, but for the most part looms in operation stop as quickly as possible after indication of a fault and most of the time the weaver has to use the hand wheel to bring the mechanism into the best position for repairing the particular difiiculty at hand.

It is well known that to tie in a broken warp end the harnesses should be level while the shed open position best serves to facilitate repairing a filling break or mispick of some sort.

While center fork type stop motions have been used for many years, there has been no instance known to applicant where such a device has been employed to transfer or replenish rather than stop the loom. In certain classes of goods that is important and yet for other reasons it is more satisfactory to use a center fork stop means. Here advantages of both are provided so that one may run extremely fine goods or may weave uncritical material under conditions of maximum production.

According to the invention, cam control means is provided, one for the warp stopping function and another to control filling stops. The warp stopping may be initiated through the usual electric or mechanical warp stop motion 2,881,807 Patented Apr. 14, 1959' stop the loom through the knock-off means as the cam and a follower means acting thereon affect the dagger.

Similarly a filling failure is indicated by the center fork which functions through mechanical means to set another dagger and, in turn, to stop the loom as timed by the filling stop cam. These cams are adjustably positioned so that each type of stop is effected leaving the mechanism in the most favorable position for attention by the weaver.

Normally a loom is stopped manually by the shipper lever which, of course, does not stop the mechanism in a specific position which might be desired depending upon the reason for stopping it. Turning the hand wheel to bring the loom to a harness level, open shed or other desired position is time consuming and arduous, and with this in mind, the instant invention is directed as well to providing manual stop means in the form of push buttons which accomplish this desired result. One push button acts through the warp stop cam and the other through the filling stop cam to stop in the proper positions.

The filling stopping means is associated with a center fork which acts through a mechanical dagger setting means and is so devised that once set to indicate a stop, it retains that setting until manually released. Thus the invention makes possible the control of the loom by the shipper handle to make single picks without particular skill. As is well known single picking requires a knowledge of the loom timing and can be effected by the skilled weaver without trouble, but with the present device the loom may be started and will definitely stop after one pick and with the shed in open position. 1

A system of lights for indicating loom condition may or may not be used with the stopping means.

In the event the loomis to be run to transfer on filling failure, a modification to be described makes it possible to do that from the center fork. The fabric take-up is also let back anappropriate amount automatically. Other means forming a part of this modification stops the loom after a predetermined number of transfer or transfer attempts if the loom, still persists in other successive tries at replenishing theshuttle. I

The invention will be described in greater-detail by reference to certain embodiments thereof as illustrated in the accompanying figures of drawing wherein:

Fig. 1 is a side view of a part of a loom to which th invention has been applied.

Fig. 2 is an enlarged showing of part of the mechanism of Fig. 1, especially the part of the device effecting filling stops. I

Fig. 3 is a front view of the mechanism of Fig. 2

Fig. 4 is detail view of cam control for the daggers effecting knock-off from either warp or filling failures.

and control therefrom to a dagger or the like serves to I Fig. 5 is a front view of parts shown in Fig. 4.

Fig. 6 is a detail view of push buttons at the front of the loom for stopping selectively in predetermined positions.

Fig. 7 is a plan view of the maens illustrated in Figs. 4 and 5.

Fig. 8 is a schematic showing of the light circuit and 0 that for stopping at two successive tries at transfer.

Fig. 9 is a modification of parts in Fig. 2 providing for transferring from the center fork.

Fig. 10 is a front view of the mechanism of Fig. 9.

Fig. 11 is a plan view showing in detail certain connections for transferring from a center fork indication.

Figs. 12 and 13 are sections at line 12--12, Fig. 11, illustrating different positions of a means to stop the loom at the second successive transfer.

Now referring to Figs. 1, 2 and 3, part of a loom to which the invention has been applied includes a loomside 20, swords 21 pivoted on a rock shaft 22 and carry 3 ing the usual lay structure-23; Warp threads T are drawn from a" beam (not shown) and pass through heddles in harness mechanism generally denoted by numerals 24 and 25. Filling is inserted in any acceptable manner after each pick of which the lay is moved to beat in the means and is wound on a fabric roll by means, most of whichis not shown since it is conventional,- but which does'include a ratchet wheel 31 for driving the take-up. This-wheel is'ratcheted by a feed pawl 32 pivoted at 33' on one arm 34 of a lever pivotedon the wheel shaft'35, the other arm 36 of which is connected as is common practice, by a link 37to sword 21 or to an adjunct 38' thereto. A stop pawl 39 pivoted at a fixed stud 40 prevents retrograde motion of the wheel except as the pawl is raised by a link 41 connected to knock-off means to be described.

A shaft 42 extends across the frontof the loom and to it is fixed a shipper lever 43 the'downwardly extending armof which is connected to a slotted clevis or other connection 44 at the end of a link 45 extending rearwa'rdly of the loom, the purpose of which will be de-* scribed in due course.

At the end of crankshaft 28 there are fixed two earns 46 and 47, the former for controlling position stopping of the loom'upon warp failure and thelatter for the same function when filling fails. The cam 46 acts against a follower end 48 of an arm 49 pivoted at 50 and spring urged into contact with the cam. A forked bunter 51 is adjustably fixed in the arm and is engaged with a dagger 52 which is hinged at 53 in a forked member 54 into which link 45 is threaded and locked by nut 55. This forked member is maintained in' proper elevation by shackles 56 and 57, one at either side, the upper ends of which are connected to the outer ends of pivot rod 53, their lower, ends being'interconnected through pivot pin 58-. Pin 53 is a common pivot for several members as will appear.

A bracket generally denoted by numeral 59 is fixed to the loomside by pad 60 and extends outwardly at 61 to present a mounting for pin 58 and downwardly at 62 to take' pin 50 upon which arm 49 is pivoted. The extension 61 projects further to the rear at 63 to support a holder 64 for one end of a rod 65 which passes through the holder and connects at its lower endto an arm 66 at solenoid 67. This solenoid is that which is energized whenever an indication of warp thread failure is received from the warp stop motion 30. It is not necessary togo into detail concerning solenoid" 67 'and its' connectio'ns' to the warp stop motion as they are W'ell'known, see US. Patent 2,378,895:

Whenever a warp thread fails a" circuit is completed through the solenoid moving arm 66 upwardly and pushing rod 65' against dagger 52 to elevateit to a position to be engaged by bunter 51. The signal for a warp stop can, of course, occur at any time, but the actual" stopping of the loom is controlled and timed by cam 4 6 which is preferably set to bring the loom to a rest position with harnesses 24, 25 level.

According to the invention, stops resulting from filling failure are also positioncontrolled, although preferably for-stopping, at ashed opened position. While not entirelyessential in the broader sense, it is more acceptable that stopping indications be derived from a center fork. Such means is generally indicated by'numeral 68-, but need notbe' further-illustrated or described as the same are well known. and evid'ent'inTJS. Patent 2,191,413. The indication. is..conveyedto -'meehanismto bedescribed 4 through a rod 69 reciprocated in guide 70. The end of this rod aligns with a bunter 71 having a' notched end" engageable by the rod end only when the fork senses a filling fault. At other times the rod end is withdrawn as the lay moves forwardly so that there is then no contact of the rod and bunter.

The bunter is fixed at the end of a rod 72 which is slidable in bunter rod bearing 73, a spring 74 normally urging the parts to the position of Fig. 2. A stop collar 75 limits motion of the parts. Bearing 73 is pivoted at 76 the latter being a stud held in a bracket 77 attached to the loomside and on which a boss 78 extending upwardly from the bearing is freely rotatable. A spring 79 is fixed at its front, lower portion to a horizontal part 80 of the bracket 77 and tends to push the whole bunter assembly upwardly against a stop screw 81.

This bunter acts through a lug 82 to set a three armed detent which has a three fold function. This detent 83, when the hunter is pushed forwardly, is forced clock wise about its pivot 84, Fig. 2, until the arm 85 thereof is latched in notch 86 of a' two armed catch 87. This catch is pivoted on stud 8'8 and a spring 89 pulls it to latching relationship with arm 85. The opposite arm of the catch is extended laterally at 90 to extend under the spring and bunter so that when the bunter end is forced down, the other end' of the catch is raisedagainst the tension of spring 89 to release the'three armed detent "83.

That detent has a second'arm 91 overlying the end 92' of a Bowden wire :cable' held in a bushing 93 fixed in boss 94 of an arm 95 which is an extension from the bracket 77. This Bowden wire control cable extends to a similar holder 96 at another arm in the forked part of extension 61, Fig. 7. At that point the cable end extends just beneath a second dagger97 similar to dagger 52, but having a lateral extension 98,. the purpose of which will be explained later. Each of these daggershas a tail 'portion to prevent raising past a horizontal position, and both pivot at 53.

The cam 47 aligns with follower 99 at the upper end of arm 100 also pivoted at 50, Figs. 4 and 5, which has adjustably threaded therein a forked bunter 101. The latter engages dagger 97 upon indication of a filling fault and knocks off the loom by pushing forwardly on link 45 just as is'the case when similar parts function at a warp failure. In one event cam 46 and in the other cam 47" controls to stop the loom in the proper positions.

Returning to Figs. 2 and 3, a third arm 102 of the three armed detent serves to raise the feed pawl 32 through a link 103 connected to the arm at its upper end and to one arm 104 of a lever pivoted at105 to bracket 106. The other arm 107 of this lever carries" a follower 108- which bears on the tail 109 of the feed pawl. Whenever the detent is actuated by'bunter'71, the pawl israised to permit let'back on the'takemp. A spring 110 tends to keep the detent in its inactive position, Fig. 2. However, when thebunter is pushed forwardly upon indication fro'rn'the center fork, lu'g 82 engages the'end of arm 85 and swingsthe parts until the said end of arm 85 latches in notch 86. That position is maintained until released manually.

When stopped as just above described, the loom may be started by the'shipper'lever, but will stop after the first pick since dagger 97, Fig. 4, remains raised.

Upon starting, unless one wishes to make single picks, the hunter 79 is' pushed down by a plunger 111. The latter isslidable in guide bearings 11-2 and 113, part of a .bracket held in place on stud 76 extended, by set-screw 114. The end of the plunger stem engages a latch pivoted at 116 and normallyin the position of Fig. 2. When the plunger is pushed in, latch 115 is swung into place against the top of the bunter. It forces that memher down to strike the lateral extension 90- of arm 87 to release the end of arm-85 from noteh86. That'permits the-take-up to resume action.

On the first pick at starting the lay comes forwardly and trips the hunter 71 as an abutment in the form of a screw 117 strikes latch 115 pushing it past center so that the tension in spring 79 may return the assembly to normal running position, Fig. 2.

Now having described the automatic stopping of the loom, the added means for push button control will be explained. In Figs. 2 and 6, a control box 118 is mounted on the front of the breast beam or at some other convenient place and two push buttons 119 and 120 control stopping at the harness level and the shed open positions, respectively.

The push button 119 closes a switch within the box 118 and through leads 121 and 122 the solenoid 67 is grounded to stop the loom with harnesses level. Actually this is an alternate way to efliect a position stop through the warp stop means.

The push button 120 is fixed to the end of a Bowden wire control 123 which runs back to the dagger 97, or, more precisely, to the extension 98 thereof. That end of the cable is held in a ferrule 124, Fig. 7, so that as the button 120 is pushed, the other end of wire 123 raises the dagger 97 so that cam 47, follower 99 and bunter 101 act to stop the loom through link 45 and the knockoff lever.

A system of signal lights may be provided and is shown in Fig. 8. Each stop means has associated therewith a micro-switch or the like so that when the loom is stopped through that particular means, its associated lamp is lighted.

The electric circuit includes a transformer 124 by which any convenient source of current is reduced to about 12 volts. The secondary of this transformer is grounded and current is carried to the solenoid 67 which has been described above and which, when grounded, raises dagger 52 into the path of hunter 51. The solenoid circuit may be completed through ground at the warp stop motion 30 or by push button 119. A micro or other switch is associated with each stopping device and controls its respective light.

The circuit shown in Fig. 8 includes three lamps, red for the mechanical or bank-off stops, green for filling, and white for manual or warp stops. The green lamp is, as are all the rest, grounded at one side while at the other it may be connected to the transformer secondary through its own micro-switch 126. As in Fig. 4, this'is a standard switch with an actuating arm 127 connected by a spring 128 to the member 54. Normally, this and the other switches are set to conduct according to the full line showing. The dotted line position is that which prevails after a stop, that is, when spring 128 has pulled arm 127 to a position to depress the switch plunger 129. The circuit for the lamps includes the other switches also, but on following through it can be seen that in bang-olfs and filling stops the respective switches will be actuated, but in all events the link 45 moves to knock-off the loom and therefore switch 126 always functions.

A switch 130, Figs. 2 and 8, is connected by spring 131 to arm 91 to be actuated whenever the loom stops on a filling break.

. Likewise a similar switch 132 is tied by spring 133 to the frog 134 so that at bang-off this switch makes contact to complete a circuit through its lamp (red). This switch is locked in tripped position by a catch 135 'so that at mechanical stops the weaver or fix-er should manually release switch 132 before starting the loom. At warp stops the switch 126 assumes the dotted line position. Then the circuit through the white lamp can be traced from the transformer secondary to the ground side of the lamp. Switches 132 and 130 in normal position form a part of the circuit.

At a filling stop, both switches 130 and 126 are tripped while that at.132 remains as at running position. The circuit then passes to the green lamp.

In the case of a bang-off,,switch, 130 is undisturbed while switches 126 and 132 are actuated. The circuit then passes current to the red lamp. v 1

At bang-off stops frog 134 functions in the usual way to affect lever 43 through rod 136, the endof which engages the head of an abutment screw 137 adjustably fixed in depending arm 138 of the shipper lever.

The instant mechanism is intended to be used in-the form above described, either with or without the signal lights. With it, or as an independent device; certain mechanism presently to be described is adapted to be used to transfera full bobbin to the shuttle upo'n indica tion of filling failure by the center fork' motion. With some grades of goods an imperfection in the fabric is less important than production so, rather than to stop the loom at filling failure, a transfer of a full bobbin from the battery is effected so the loom continues to weave. This transfer, as will be described, is effected by means under control of the center fork motion.

Now referring to Figs. 9-13, the breast beam of the loom mounts a starter shaft 139, arm 140 fixed to the shaft and pivoted at 141 to a filling feeler slide 142 mounted in a stand 143. At its rear end this slide is extended laterally at 144, Fig. 11, and is forked to pivot at 145 a lifting lever 146 the position of which is governed by connecting rod 147. The rear end of the slide is also slotted to receive the notched end 148 of a filling cam follower trip 149. The latter is attached at the upper end of a lever pivoted below and actuated by a cam (not shown) by means of which the slide 142 is moved to rotate the starter shaft as is necessary to set the transfer mechanism in a manner known to those conversant with this art. Normally, the trip 149 swings to and fro and enters the notched end of the slide, but since lifting lever 146 is inactively positioned, there is no effect on the slide. However, when a transfer is necessary to replenish the filling supply in the shuttle, the rod 147 is actuated by a filling feeler of any satisfactory type to project the lifting lever 146 into the notch at the tip of trip 149. The lever and slide then move'together to set the loom for transfer.

By mechanism presently to be described, this function is also caused to take place whenever the'center fork indicates filling failure. The end of rod 69 remaining in extended position contacts bunter 71 pushing it forwardly to rock the three armed lever 83 until the end of arm 85 is latched in notch 86. It is to be understood that ferrule 93 is lowered or in some way the end 92 of the Bowden cable removed from a position in which it can be actuated by arm 91, since the loom is no longer to stop at filling failure. Switch 130 may also be removed or disconnected in that there is no need for a: light to act at filling stops, although as a part of the circuit it may have a function unless the circuit is to be altered. .-i

As the hunter sets the three armed lever, a bell crank lever having arms 150 and 151 connected through a vertical pivot member 152 is swung angularly. This lever is borne in bearing member 153, Figs. 10 and 11, while arm 150 extends into an opening 154 in arm 85. A collar 155 holds the parts at intended elevation. The arm 151 engages an offset part 156 of the rod 147 so that as arm 85 moves the bell crank is turned in its bearing and arm 151 forces the rod to the right, Fig. 10, just as would the filling feeler. That motion sets the lifting lever 146 at the proper time to engage the notched end of lever 150 and again, transfer is effected, but as a consequence of filling failure rather than upon exhaustion thereof. I

Having set the mechanism for transfer, it would continue to do that every time the shuttle entered the box at the battery end of the loom if the setting were not tripped. For that, a lever 157, Figs. 9, 10 and 11, is controlled to pull the latch 87 upwardly to release the three armed lever through a link 158. This lever is attached to one end of a pivot 159 rotatable in bearing 160=and Y 5881, so?

at other end of; which. is' fixe'dthe opposed arm. 161.- This latter arm mounts-afollower pin 162-which is. con+ trolled by-a-cam 163.. Canr1'63 is-pivoted at .164'on.the slide. 142 and. when the slide-is moved forwardly to set up acondition for transfer it merely pivots. over follower 162 having'no efiect on. it. However,.after transfer the slide. moves to therear andthe cam is then. active to push arm 161 downwardly pulling up on link 158 to unlatch the arm 85 and permitthe parts to resume a normal, inactive position. 1

At filling-failure and the transfer which accompanies it there is a mispick so the loom take-up should be let back. To accomplish that the feed. pawl is raised by mechanism above described and: the stop pawl is connected'by a link 165-to the same point as link 103, Figs. 2. and 9. Of course, theloom is. not knocked off so link 41 nolongerl may be reliedupon to raise the stop pawl. Preferably, it should be" disconnected.

To prevent more than one successive transfer, ameans is connected inthe warp stop motion circuit for grounding it in that event. A toggle mountedbell. crankhaving arms 166' and 167,. Figs. 12 and 13: especially, may be swung to and fro as in these figures being. limited in movement by stop pin 168-. Spring 169 holds the lever ineither extreme position. Pivot 170 for the lever is mounted in a lug 171 projecting upwardly from. the slide end.

Arm 166' has-attached toitsface a spring: contact strip 172. At times thiscontact is to ground the warp stop solenoid circuit and a=conductor 173 from lead 121 there of, Figs. 8 and 11, terminates at an insulated metal contact 174,. Fig. 13. Thisis' attached beneath a plate 175 of insulation material so that, whencontact172 engages the-upper or insulated part, no ground is established; but when. it contacts the lower metal. piece"v the circuit is grounded and theloom is stopped.

At thefirst movement of the slide forwardly the arm.

167 is struck by screw 176 totrip' the bell. crank about its pivot, however, by the time the tripping occurs, con tact 172 is in position to descend on top of the insulation material and complete rotation to the position of Fig. 13 does not take place until the slide moves to the rear, or at least, contact 172. does not assume that position until that time. On the next pick, if weaving is normally resumed, the filling cam follower trip moves forwardly without a corresponding motion for the slide 142 and a wire or other projection 177 strikes the pin 178 to which spring 169'is attached and rotates arms 166 and. 167 to the inactive position, Fig. 12.

If a filling fault is again indicated at the next pick after transfer, there is likely to-be some difficulty necessifating, attention of the weaver and the loom is to be stopped. At such pick the lifting lever will again lock the trip 149 and slide 142 for movement as a unit and instead of being. reset, the contact 172' will strike the metal ground terminal 174 to complete the" warp stop circuit.- and thereby stop the loom.

The let-back of. the take-up has been described only so far as the means incidental to this invention is adapted to release the take-up for letting back the fabric. The; actual. control for limiting let-back to an amount required may be that regularly supplied on looms of this type. Such are adjustable for the extent of motion required to assure a reasonably uniform fabric.

Operation Now having" described the mechanism involved, the operation through various possible stopping sequences will be reviewed.

Assuming the loom to be running and that a warp thread fails, a drop wire at the warp stop motion grounds that. part of the circuit and solenoid. 67 is energized raising. dagger 52. As cam 46 moves arm 49 forwardly against a returnspring (not shown) bunter 51 picks up the. dagger and pushes element 54, rod 45' and arm 138,. Figs. 1 and 2,.to. the. front. to. actuatev control shaft 42 and stop theloom. Switch 126 is. moved. to the dotted lineposition, Fig. 8, so. the circuit to the white lamp is completed.

A manual stop functions in much the same Way to light. the same lamp, but, of course, the warp stop parts are not disturbed.

For a filling stop, assume that the center fork indication is responsible for indicator rod 69 remaining in extended position so that it contacts bunter 71 as the lay moves forwardly. That part, and specifically the lug 82 thereon sets lever 83 to be held in notch 86 of latch 87, Fig. 2, and thereby starts a cycle of action including, raising dagger 97 through cable 92, lifting the feed pawl 32 and actuating switch 130.

As cam 47 rotates arm 100 and bunter 101 it affects link 45 through the raised dagger 97 and. stopsthe loom. In this event the stop occurs with the shed open, while before at warp stop the harnesses were level as the loom came to rest.

The switch in. combinaton with switch 126, also affected, closes the circuit to the green lamp to indicate a filling stop.

v This mechanism remains set until released by hand plunger 111 as described. Of course, single picks are possible while the filling stop motion is set. When released the loom may be started and will continue to run; the green light stays on until the arm 85 is released except for a momentary flash off when the shipper lever is pulled to start the loom for a single pick. At the first pick after starting the lay by an abutment 117' trips member 115 to let bunter 71 rise to normal or running position. By the time it rises the indication at the center. fork will have been completed so there will be no danger of stopping. at the first pick due to there being no filling under the fork at that time.

A mechanical stop through frog 134, rod 136 and arm 138 affects switches 132 and 126 to light the red lamp. Switch 132 must be manually released by latch 135 or some other convenient means, that being. a safety means to assure that the reason for the stop, that is, a mechanical one, is. checked before starting again.

Push button control may be employed to stop in either shed open or harness level positions at will and thus, the weaver need no longer spend considerable energy and time bringing the loomto a desired position by the hand wheel.

If it is desired to operate the loom transferring from the center fork. indications, the use of. the means described in conjunction with Figs. 9-13 makes that practical. The connections to the dagger 97 are disabled and the center fork motion by its action upon bunter 71 and three armed lever 83 rotates crank arms and 151 to set lifting lever 146 whereupon transfer is effected by the same mechanism which performs that function at near exhaustion of filling in the shuttle.

The. toggle switch mounted. on the slide 142 then rotates, but effects no completion of a circuit on the first transfer. If the loom returns to normal operation, the switch is reset by projection 177.

As the slide 142 moves forwardly cam 163 pivots over a follower 162 on an arm which constitutes part of a re setting means. Return or rearward motion of the slide acts through that cam, arms 161, 157 and link 158 to lift latch 87' and release the three armed lever thereby permitting the mechanism to return to position to act again at the next indication. If the center fork indicates for a second successive transfer, the projection 177 will not trip the toggle switch and as the'filling cam follower trip I49 moves forwardly contact 172 engages terminal 174 to ground the warp stop motion circuit and stop the loom.

In transfers from the center fork as in ordinary filling stops, the take-up is let back appropriately.

While one embodiment of the invention has been disc1osed',fit is to be understood that the inventive concept may be carried out in a number of ways. This invention is, therefore, not to be limited to the precise details de scribed, but is intended to embrace all variations and modifications thereof falling within the spirit of the invention and the scope of the claims.

I claim:

1. In a loom the combination of warp thread-shedding means, a warp stop motion and a filling stop motion, a knock-off means for starting and for stopping the loom manually, and position stopping means comprising a shaft rotatable in the loom, cams fixed to said shaft and means under control of said warp stop motion affected by one of said cams for stopping said loom through said knockoff means upon indication of warp failure, and other means effective upon an indication of filling failure for stopping the loom through mechanism under control of the other of said cams, said cams being adjustable for timing the point in the cycle at which said loom shall stop and push button actuated stopping means interconnected to said stopping means, above recited, for selectively stopping the loom at either the harness level or shed open positions.

2. In a loom the combination of warp thread shedding means, a warp stop motion and a filling stop motion, a knock-off means for starting and for stopping the loom manually, and position stopping means comprising a shaft rotatable in the loom, cams fixed to said shaft and means including a cam follower, a link and forked member and a dagger under control of said warp stop motion affected by one of said cams for stopping said loom through said knock-off means upon indication of warp failure, and other means including a second cam follower and a second dagger effective upon an indication of filling failure for stopping the loom through at least a part of the mechanism by which stopping is effected at warp failure and under control of the other of said cams, said cams being adjustably positioned to stop the loom with barnesses level at warp failure and with the shed open at filling failure.

3. In a loom the combination of warp thread shedding means, a warp stop motion and a filling stop motion, a knock-01f means for starting and for stopping the loom manually, and position stopping means comprising a shaft rotatable in the loom, cams fixed to said shaft and means under control of said warp stop motion affected by one of said cams for stopping said loom through said knockoff means upon indication of warp failure, and other means effective upon an indication of filling failure for stopping the loom through at least a part of the mechanism by which stopping is effected at warp failure and under control of the other of said cams, said cams being adjustably positioned to stop the loom with harnesses level at warp failure and with the shed open at filling failure and push button actuated stopping means interconnected to said stopping means, one said means being electrically connected within the stop motion circuit and the other being manually operable within the filling stopping means, for stopping the loom selectively at the harness level or at the shed open position.

4. In a loom the combination of warp thread shedding means, a warp stop motion and a filling stop motion, a knock-off means for starting and for stopping the loom manually, and position stopping means comprising a shaft rotatable in the loom, cams fixed to said shaft, a means connected to said knock-off means and including two daggers normally in position to be unaffected by said cams, but movable selectively to a position in which they are affected by their respective one of said cams for moving said means connected to the knock-off means, one said dagger being connected for movement to active position by an indication from the warp stop motion, and the other being atfected by means interconnecting it to the filling stop motion.

5. In a loom the combination of warp thread shedding means, a warp stop motion and a filling stop motion, a

knock-off means for starting and for stopping the loom manually, and position stopping means comprising a shaft rotatable in the loom, cams fixed to said shaft,'a means connected to said knock-off means and including two daggers normally in position to be unafiected by said cams, but movable selectively to a position in which they are affected by their respective one of said cams for moving said means connected to the knock-01f means, cable means from said warp stop motion to one of said daggers for positioning it actively at indication of warp failure, and other cable means from the filling stop motion to the other dagger for positioning it actively at indication of filling failure.

6. In a loom the combination of warp thread shedding means, a warp stop motion and a filling stop motion, a knock-off means for starting and for stopping the loom manually, and position stopping means comprising a shaft rotatable in the loom, cams fixed to said shaft, a means connected to said knock-off means and including two daggers normally in position to be unalfected by said cams, but movable selectively to a position in which they are affected by their respective one of said cams for moving said means connected to the knock-off means, cable means from said warp stop motion to one of said daggers for positioning it actively at indication of warp failure, and other cable means from the filling stop motion to the other dagger for positioning it actively at indication of filling failure and push button actuated stopping means interconnected to said stopping means, one said means being electrically connected within the stop motion circuit and the other being manually operable within the filling stopping means, for stopping the loom selectively at the harness level or at the shed open position.

7. In a loom the combination of warp thread shedding means, a warp stop motion and a filling stop motion, a knock-off means for starting and for stopping the loom manually, and position stopping means comprising a shaft rotatable in the loom, cams fixed to said shaft, a means connected to said knock-off means and including two daggers normally in position to be unaffected by said cams, but movable selectively to a position in which they are affected by their respective one of said cams for moving said means connected to the knock-off means, cable means from said warp stop motion to one of said daggers for positioning it actively at indication of warp failure, and other cable means from the filling stop motion to the other dagger for positioning it actively at indication of filling failure and push button actuated stopping means interconnected within said automatic stopping means, one said means being electrically connected for grounding the warp stop motion circuit to stop the loom in harness level position, and the other being manually operable for affecting that dagger identified with the filling failure stopping means and operable for stopping the loom manually and at the shed open position.

8. In a loom the combination of a Warp thread shedding means, a filling failure indicating means, a knockoff means for starting and for stopping the loom manually, and position stopping means comprising a shaft rotatable in the loom, a cam fixed to the shaft, a means connected to said knock-0E means and including a dagger normally in position to be unafiected by said cam, but movable selectively to a position in which it is affected by said cam for moving that means connected to the knock-off means, and means for so moving said dagger upon indication of filling failure which comprises a pivoted and slidable member, a latch and lever means affected by said pivoted and slidable member and retained by said latch, cable means for imparting motion from the lever means to the dagger, and manually operated means for simultaneously displacing said pivoted means to become inactive for the first pick upon starting the loom and for releasing said latch and lever means.

9, Mechanism; as; defined; int claim 8 wherein said meansgfor: displacing the; pivotedv means and for releasing; the latch comprises; a pivoted member, a plunger for forcingsaid-member into engagement with the said means to force it downwardly.

10; Mechanism asdefined, in claim 8- wherein said lever means is provided for the further function of raising a take-up feed pawl to permit let-back of fabric.

11. In aloom the; combination of. warp thread sheddingmeans, a warpstop motion and a filling stop motion, aknock-oif means for starting and for stopping the loom manually, andv position stopping means comprising a shaft rotatable in the loom, cams fixed to said shaft, a means connected to saidknock-01f means and including two daggers normally-inposition to be unaffected by said cams, but movable selectively to a position. in which they are affected by their respective one of said cams for moving; said means connected to the knock-01f means, one said' dagger being connected for movement to active positionv by an indication from the warp stop motion, and the other beingaffected by means interconnecting it to the filling stop motion and a signal light circuit and switch means functioning with said warp and filling stop means; for selectively indicating the cause for stopping.

12. In a 100m the combination of a lay, a warp thread shedding means, a warp stop motion and a filling failure indicating means periodically'movable along the length of said lay and functioning from indications from a center forkfilling sensingmeans, means for indicating and setting a filling'replenishingmeans upon near exhaustion of filling; a knock-off means: for starting; andstopping the, loom manually,v stopping means: for stopping the loom at warp failure, other stopping means, for stopping the loom at filling failure which comprises; a bunter, allever eflective to actuate m knock-off means upon engagement of said means movable along the length of said, lay with said bunter when the 100m is to be stopped at a filling break, and meansinclnding said center fork filling sensing means and said means movable along the length of the lay effective through said bunter and lever and acting upon said means for setting the filling replenishing means to transfer a full bobbin to the shuttle when said loom is set to effect such replenishmentat a filling break.

13. Mechanism as defined, in claim 12 wherein said meansfor starting the cycle of transfer has functioning therewith a means for resetting the bunter after engagement with the filling failure indicating means after each indication for transfer.

' References Cited invthe, file of this patent UNITED STATES PATENTS 1,285,385 Rhoades Nov. 19, 1918 1,865,930 Lindsjo July 5, 1932 2,103,800 Turner Dec. 28, 1937 2,151,199 Gledhill, Mar. 21, 1939 2,522,840 Rinne et a] Sept. 19, 1950 2,600,667 I Mason June 17, 1952 2,639,734 Brock May 26, 1953

Images