US1142753A

US1142753A - Stopping mechanism for textile apparatus.

Info

Publication number: US1142753A
Application number: US80367813A
Authority: US
Inventors: Randolph Crompton
Original assignee: Individual
Current assignee: Individual
Priority date: 1913-11-29
Filing date: 1913-11-29
Publication date: 1915-06-08
Anticipated expiration: 1932-06-08

Description

R. CROMPTON.

STOPPING MECHANISM FOR TEXTILE APPARATUS. APPLICATION FILED Nov. 29. 1913.

1 ,142,753', PatentedJune 8, 1915.

3 SHEETS-SHEET l- 53 Invewi'o'r: 6/ A Reuzdolph 07 070,?57070.

THE NORRIS PETERS 60.. PHOTC-LITHQ. WASHINGTON. D.

R. CROMPTON.

STOPPING MECHANISM FOR TEXTILE APPARATUS.

APPLICATION FILED NOV.29. 1913.

1,142,753. Patented June 8, 1915.

3 SHEETS-SHEET 2.

68 8 as 74 M W73?) $9 I I 10 4. :1

74 7 5 73 Inven/Zor:

Bcwwdoiph (fimrmpion THE NORRIS PETERS CO. PHOTO-LITHQ, WASHINGTON, D. C.

parts.

nANnoLrn CROMPTON, or GHATHAM, MASSACHUSETTS.

STOPPING MECHANISM FOR TEXTILE APPARATUS.

Application filed November 29, 1913. Serial No. 803,678..

To all whom it may concern:

Be it known that I, RANDOLPH CRoMr'roN, a citizen of the United States, and a resident of Chatham, in the county of Barnstable and State of Massachusetts, have invented an Improvement in Stopping Mechanism for Textile Apparatus, of which the following description, in connection with the accompanying drawings, is a specification,- like characters on the drawings representing like This invention relates to stopping mechanism for textile apparatus and particularly for looms.

In ordertha-t the principle of the invention may be readily understood, I have disclosed a single embodiment thereof in the accompanying drawings, wherein' Figure 1 is a side elevation of a loom having my invention applied thereto; Fig. 2 is a front elevation of the mechanism shown in Fig. 1; Fig. 3 is a detail in vertical section on the line 33 of Fig. 2 and looking toward the right in said figure; Fig.

41: is a front elevation of the structure shown in Fig. 3 and looking toward the left in said figure; Fig. 5 is a vertical section on the line 55 of Fig. 3; Fig. 6 is'a plan view of the structure shown in Fig. 3; Fig. 7 is a side elevation of one of the adj usting devices for the heddle frames; Fig. 8 is a plan view of aportion of the front of the loom shown in Fig. 1; Fig. 9 is a view on a larger scale of the parts shown in Fig. 8, the race of the lay being removed; Fig. 10 is a side elevation of a portion of the heddle frame having my improved duplex heddles applied thereto; Fig. 11 is a vertical section taken through two heddle frames, the shed being closed; Fig. 12 is a similar view but representing the shed open and the warp ends in normal condition; Fig. 13 is a View similar to Fig. 12, but representing one of the warp ends as broken or unduly slack; and Fig. 14 is a detail in plan of the duplex heddle tensioning means shown in Fig. 1 0.

Looms have long been provided with warp stop motions which have been placed in the harness so as to form a part thereof or which have been placed in the rear of the harness, but in almost all cases it has heretofore been necessary to rely upon the action of gravity, and therefore to use parts of substantial weight, in the nature of metal drop devices or the like. In all commercial stop motions for looms known to me employing heddle Specification of Letters Patent.

Patented June 8, 1915.

stops, the heddle has acted through gravity to initiate the stoppage of the loom. This has in practice necessitated the use of metalvolved in the use of finer and more delicate warp, the drops have been located behind the harness and therefore ina position where they do not receive that vertical reciprocation incident to the shedding action of the warps, and in certain cases they have been so positioned that they receive no movement due to the shedding action alone. The obj ections to this latter classvof stop devices are, however, serious, for there is nvolved a large complement or supply for each loom,

generally as many as the number of warp classes of drop devices the drawing of the warp ends through the drops as well as through the harness, thus largely increasing ends used. This has involved with many thelabor incident'to the preparation of the warp for the loom. While drop devices positioned back of the harness do less injury to the warp ends in the weaving operation than do the metallic drop heddles, nevertheless the former class of drop devices does seriously injure certain classes of goods and j 7 especially silk goods. The so-called cotton harness, by which term I include harnesses made of textile materlal, such for example as cotton or twine, or a material thatis col- 1 lapsible in the direction of its length, is universally acknowledged to be best adapted for use upon fine work; I have succeeded in utilizing the so-called cotton harness as a stop device, and thus I retain all the advantages of such class of harness, and in addition avoid the necessity of drawing the Warp ends through a harness and also through drop devices. I thereby efiect the shedding of the warp with the least possible chafing thereof and at the same time there is necessitated no more labor in the drawingin of the warp than in the ordinary type of looms having no warp stop motions.

Metallic drop devices are open to certain serious objections, such as the rusting and the electrifying thereof. The latter phenomenon, which is of frequent occurrence in loom practice, results in the holding of the drop of a faulty warp end in place so that the warp fault is not indicated.

In the preferred embodiment of my invention I employ stop devices which are of the type of so-called cotton harness to which I have referred, and which do not rely or depend upon the action of gravity to effect the stoppage of the 'loom in the event of warp fault. The stopping action is thus rendered more certain because no electrification of drops can occur'and because there is less crowding of parts. Moreover in that embodiment of the invention herein disclosed, I provide a positive initiation of the stopping action as contrasted with one which is initiated through the action of gravity. Furthermore in that embodiment of the invention herein disclosed, the heddle eye which carried the faulty warp end is elevated above the plane of the warps or above the upper plane of the shed of the warps when the harness in which the warp fault occurred is elevated, instead of being depressed as commonly practised heretofore, and thus the broken end may be readily seen and more readily repaired.

1n the selected embodiment of my inven tion herein disclosed, I employ mechanical means intermediate the heddle frames with their heddles and the shipper mechanism to effect the stoppage of the loom or the suspension of the shedding action in the event of warp fault.

Other advantages of my invention will be readily apparent from the description of that single embodiment thereof herein disclosed.

Referring more particularly to the drawings, I have therein represented a conventional type of loom having side frames 1 and 2, a breast beam 3, a lay 4: operated in any suitable manner and having a race plate 5, a belt shipper 6 pivoted at 6 and having a handle 7 and held in the usual crotch, fast and loose pulleys indicated at 8, and a belt shipper lever 9 by means of which the belt may be shifted from the fast to the loose pulley, and vice versa. These parts may be of any usual or suitable construction and other parts of the loom commonly employed are omitted, for clearness of illustration.

My invention may be employed with any desired number of heddle frames or supports. I have herein illustrated but two heddle frames, but it is clearly to be under stood that my invention is not limited thereto, although 1 shall describe my invention and the functioning of the various parts thereof with reference to the employment of but two heddle frames.

In Figs. 2, 10, 11, 12 and 13, I have indicated two heddle frames '10 and 11, the former having upper and lower cross mem bers 12, 13, and the latter having upper and lower cross members 14, 15. These cross members are preferably made of some suitable non-corrosive material, whichvis preferably aluminum, though within the pur pose and scope of my invention, I may employ other non-corrosive substances, as, for example, boxwood. The said heddle frames are reciprocated by any suitable shedding mechanism, not herein shown in detail or entirely, and to which they are connected by

suitable straps

16, 16, passing over

guide pulleys

17, 17, as represented in Figs. 1 and 2. At their lower ends, the said heddle frames are connected by

links

18, 18 to a frame, 19 having

straps

20, 20 attached in any suitable manner, to be operated by the shedding mechanism in a manner not necessary to set forth in detail. For the sake of clearness, I have omitted the heddles from the heddle frames shown in Fig. 2, but have diagrammatically indicated the same in Figs. 10 to 13 inclusive. The number of heddles is proportional to the number of warp ends, and they are preferably formed of some suitable textile material, such as cot ton, though I desire it to be clearly understood that for the accomplishment of certain advantages and objects of my invention 1 may employ heddles formed partially or wholly of some suitable metal, as for example wire. Preferably, however, 11 employ heddles of textile material or material collapsible in the direction of its length and preferably such material is restrained from changes due to atmospheric conditions, by a coating of sizing fluid, or any other suit able substance. Preferably each heddle is therefore formed of a flexible, twisted texture having an eye formed of and by the same texture, the eve being preferably suitably varnished or coated with a suitable sizing to prevent said knots from slipping, said heddles having unvarnished' upper and lower portions to permit the same to slip or move over the cross members of the heddle frames, as hereinafter more fully set forth.

In Figs. 10 to 18 inclusive, 1 have indicated two

heddle devices

21, 22, each of which is duplex in that it receives two warp ends. Each heddle device is represented as composed of a continuous twisted strand, piece or band of textile material, such as cotton, cord or twine, which is universally flexible and is so soft as not to act harshly, and is passed about the upper member 12 or 14., and the lower member 13 or 15 of its heddle frame in such manner that it can travel longitudinally thereabout; that is, in the direction of its own length and in either direction. Each duplex heddle may be regarded, and particularly when viewed in side elevation as in Figs. 11, 12 and 13, as

composed of two members lettered respecvice is continuous and uninterrupted. Each of the heddle members A, B, C and D is provided with a suitable eye or warp receiving formation 23 and through the several eyes pass the four warp ends respectively lettered a, Z), 0 and (Z. Viewing each heddle device in front elevation, reference being made to Fig. 10, it will be observed that each mem ber A or C is composed of two strand portions 6, f (extending from the other member B or D) and passing in parallelism downwardly to a point 9 where they'are crossed or formed into a half knot and separated to form an elongated loop or eye 23, being again brought together and recrossed at z to complete the loop or eye and then continued downwardly in two parallel strands as indicated at j, it". In reality the entire device is composed of a single twine or piece which is uninterrupted and without knot or crossing at the point of support of the upper heddle member, and at the lower portion of the device the ends may be knotted together at any suitable point, as for example at either of the

points

24, 25 hereinafter referred to. It will thus be observed that the eye of each heddle is in the dis, closed embodiment of the invention composed of the same material asthe other portions of the heddle and that no knots are presented to the warp end at the heddle eye. It will be observed that the eye is preferably elongated as shown and that each eye is preferably in its normal position substantially centrally positioned with respect to the upper and lower cross members of the heddle frame, to which it pertains. Each heddle device or duplex heddle, to which I hereinafter refer as the heddle, is provided with means whereby the movement initiated upon the breakageof or fault in a warp end is transferred to the stopping mechanism proper. Preferably for this purpose I provide each heddle with an extension or

loop

26, 27, which is also preferably of textile material, and may be integral but distinct from the heddle or may be in one piece with the main portion of the heddle. have, however, represented each extension or

loop

26, 27 as composed of a piece having its ends knotted to the heddle at 24-, 25. The

loops

26, 27 of all the heddles receive therein a stop device or element herein represented as a tube, rod or bar 28 constituting a portion of the stopping mechanism. In order to render the said element sufficiently light, I preferably form it as a tube and also form it of a suitable non-corroding material, such, for example, as aluminum or boxwood. The generality of weaverooms are artificially V. humidified in order that the tender. warp ends will: remain soft and pliable. This humidity causes the metallic substances to rust and corrode very readily and a Warp stop motion organized on the principle of,

the present disclosure without regard to this fact wouldspeedily be rendered useless.

I have ascertained in the course of my experiments that the cross pieces of the heddle frames must be made, in that type of my invention herein disclosed, with non-corrosive material. Polished steel and polished nickel will sooner or later rust and render the entire mechanism substantially useless, while unpolished nickel, copper, coated metal andoxidized materialshave a detrimental efl'ect upon the cotton heddles, causing them to break very readily and increasing the friction to such an extent asto render said heddles practically non-slidable. The action of aluminum upon the cotton heddles is substantially that of av constant lubricant, and inasmuch as aluminum is noncorrosive, I preferably use aluminum cross pieces in the heddle frames Within the scope of my invention, so far as certain features thereof are concerned, I' may utilize other suitable operating connections between the heddles and the stop rod 28, and other stop motion transmitting devices may be substituted for said stop rod. 7 I

Viewing Figs. 10 to.13,'it willJbe noted that the

members

26, 27, of each loop are knotted or otherwise connected at a point intermediatethe lower cross member and the tube 28, as for example at the point 29. This unionof the members of each loop is for the purpose of causing the rod 28 to be lifted. Vvithout the union or connection of the members of the

loop

26, 27, the rod would not be lifted from its normal position, as the upper ends 24:, 25 of the

loop

26, 27 clearly let off and take up when the heddle eyes are shifted, thus neutralizing the action of each other and causing the

loop

26, 27 to shift about the rod 28 without causing thelatterto be lifted from its normal position, as above stated. The length of the

several loops

26, 27 is such that in the lifting of the heddles in the shedding action, the rod 28 is not disturbed, as is evident from a comparison of Figs. 11 and 12. "When, however, warp fault occurs,

such as warp breakage or as undue slackness and as indicated at c in Fig. 13, then the unbroken warp end (Z of the companion warp ends 0, (Z received by the'duplex heddle device C, D in Fig. 13, immediately imparts longitudinal movement to the heddle device in thedirection of the arrow in Fig. 13, because the said warp end is in the shedding action drawn from a true horizontal plane. The consequence of the downward movement of the memberD'of the duplex heddle is the simultaneous upward movement of the; 1 member C of the same heddle, carrying with it the broken or faulty warpend-c intothe elevated position shown in Fig. 13. 'Thus the broken or faulty warp end is lifted above the plane of the shed in which it occurs and the

loop

26, 27 is moved from the position shown in Fig. 12 into the position shown in Fig. 13, thereby lifting the tube 28 from the dotted line position shown in said figure to the full line position, thus either operating the stopping instrumentalities to stop the loom or to disconnect the shedding mechanism which within the scope of my invention may be done without actual stoppage of the loom.

I have thus far assumed that the faulty warp end is one in the upper plane of the shed. It is evident that if the undue slackness or breakage of the warp end occurs in the lower plane of the shed, the described movement of the heddle upon its supporting members 12, 1.3 occurs when the heddle frame thereof is lifted in the shedding operation. In other words, if a Warp end breaks or becomes unduly slack when in the lower plane of the shed, such warp end, as soon as it is moved into the upper plane of the shed, is instantly lifted above said plane of the shed, as indicated in Fig. 13.

The relative arrangement of the threads passing through the heddles of the various frames depends upon the number of such frames. In that simple form of the invention herein illustrated and having reference to the threads as they are introduced into the loom in sheet form, the first and third threads are passed through the eyes of one of the heddle devices and the second and fourththreads are passed through the eyes of the other heddle device. The warp ends are distributed through a greater number of heddles in an obvious manner, not herein necessary more fully to particularize. It is evident that such breakage of warp ends as will prevent the instant initiation of loom stoppage is remote, and that this remoteness increases with the increase in the number of heddle frames. For example, and considering merely the use of two heddle frames, if the two warp ends which pass through the eyes of the two'members of a single heddle both break and both break precisely simultaneously, then initiation of loom stoppage is not effected, but if both threads of said heddle break, and the breakage of one precedes the breakage of the other by a small fraction of time, such for example as one third of a second in looms running at the rate of one hundred and eighty picks a minute, it is evident that loom stoppage is effected. Thus, it is only in the remote contingency that of all the warp ends in the loom, the two threads that break are the two threads of a single heddle and such breakage is absolutely simultaneous, is there failure to initiate loom stoppage. l have demonstrated the fact, and particularly with looms employing a greater number of harnesses, that the chance of failure to initiate loom stoppage is almost infinitesimal. Any suitable means may be employed to effect loom stoppage upon the initiation thereof in the manner described. In the disclosed embodiment of the invention, I have repre sented mechanically controlled means operatively connected with the stopping mechanism proper, to which I shall hereinafter refer broadly as the shipper mechanism.

Inasmuch as atmospheric changes cause the heddles to expand and contract, thereby making them too loose or too tight for proper sliding action on the cross rods 12, 1 1, and 13, 15, I preferably provide means to keep said heddles suitably stretched between the formations of the different sheds. Such tensioning device, under the action of the straightening tendency of the warp ends forces downward the cross pieces 12, 1a when the heddle frames are lifted respectively into the unner plane of the shed. This action, while it causes the heddles to become somewhat loosened about the cross piece 13 or 15, as the case may be, according to which heddle frame has moved to the up- 7 per plane of the shed, tightens all the heddles around the cross pieces 12, 14 (see Fig. 11) except in the event of a fault in the warp. When a fault in the warp occurs the heddle or heddles which controlled the faulty warp end or warp ends slacken materially, reducing the friction about the supporting cross pieces of the heddle frames to a minimum.

Referringparticularly to Figs. 10 and 1 f, where I have represented one embodiment of means for this purpose, I have therein represented one of the upright members of one of the heddle frames at 30 and the outer cross members at 31, 32, said members being united at their meeting ends as indicated. Adjacent the meeting ends of the uprights 30 and the upper cross member 32, 1 provide suitable pulleys 33 and passing over each of said pulleys a cord 3 1 connected at 35 to one end of the cross member 12 or 1% of the heddle frame. At its other end the said cord is suitably connected to one end of a tension spring 36, the other end of which is connected to an adjusting bolt 37 tapped into an ear or projection 38 of the cross member 32. Although I have shown but one tensioning device, it will be understood that I provide a similar device at each end of each upper cross member 12, 14:, and that other suitable tensioning means may be substituted if desired. 7 V

l have referred to the heddle frames as supported by straps 16. Owing to the fact that an exceedingly accurate adjustment and alinement of the heddle devices is necessary to the most effective operation of the mechanism, 1 provide means not only for a relatively coarse adjustmentof the vertical p01 sition of the heddle frames, but also means for insuring an exceedingly accurate adjustment thereof. For this purpose and referring to Figs. 2 and 7, I have provided turn-buckle hooks 39, 40, oppositely threaded into a nut 41 as therein indicated. Each strap 16 is provided with a series of holes into any one of which the hook 39 may be inserted and the hook 40 is passed about the upper cross member 32 of the heddle frame. This provides for a coarse adjustment of the heddle frames, but in order to secure a very fine and accurate adjustment or alinement thereof, I provide the nuts 41 by rotation of which an exceedingly accurate alinement or positioning of the heddle frames may be secured.

The harnesses may be guided in any suitable manner. Preferably I employ means which will support them with capacity for yielding movement toward each side frame of the loom and also toward the front and back thereof, the construction being such that in the selected embodiment of my invention the bar 28 partakes of such movement of the harness, so that the relative position of the harness and the corresponding bar 28 is not disturbed excepting when warp fault occurs. It will thus be observed that the bar 28 and the set of heddle frames with which the bar coiiperates are self-contained, all being kept in the same horizontal relation during the operation of the loom. Thus the heddles are free to move toward either side frame of the loom or toward either the front or the rear thereof, and in the event of such movement the bar or tube 28 moves therewith but without displacement until warp fault occurs. Thus the bar 28 is supported for swaying or similar movement incidental to the heddles in the normal weaving operation. In order to guide the harness with capacity for such yielding movement, I have herein represented thin, quite highly flexible, upright, metal strips 42, 43, as indicated in Figs. 1 and 2. These strips are preferably pivoted at 44 in suitable socket pieces 45 secured to the floor, thus permitting said strips to rock toward and from the front or rear of the loom. Within the scope of the invention, the said strips 42, 43 may extend to and be secured to any suitable part of the loom frame above the floor.

As most clearly shown in Figs. 3, 4 and 5, each of the

strips

42, 43 has secured to its upper end in any suitable manner a guide block 46 having open ended slots for the reception of the heddle frames indicated at 30 in Figs. 4 and 5. The said heddle frames are reciprocated in said guide blocks through the usual instrumentalities and the said guide blocks may be held in proper relation to each other by readily detachable devices, such as cotter pins or the like, upon to receive the ends of the bars 28, which if desired may be of reduced diameter as indicated at'49. Each recess 48 is vertically elongated as represented at Fig. 5 to permit the said bar 28 to be elevated upon the occurrence of warp fault. I preferably provide means to effect the adjustment of the boxes 47 upon the

flexible strips

42, 43, such adjustment being herein represented as a vertical one. For that purpose I have herein provided each box 47 with an upright strip 50 having therein a vertical series of holes or sockets 51 shown in Fig. 3. Any one of these holes or sockets 51 is adapted to be entered by a pin 52 upon a plate spring 53 resting flatwise against and secured to the

strip

42 or 43.

I have previously stated that the bar or device 28 is preferably of tubular form. In order still further to minimize the eifective weightthereof, I provide counterbalanoing means co-acting with said rod, so that an exceedingly slight displacing movement of a heddle device is suflicient to elevate or displace the said bar 28. Herein for this purpose I have provided adjacent each end of the bar a counterweight 54 positioned within a guide 55 secured to the strip 50 and supported by a cord or wire 56 passing over a pin 57 upon the guide block 46, and thence extending and connected to the rod 28 adj acent its end. I provide mechanical means intermediate the stop bar or device 28 and the shipper lever 6 functioning upon displacement of the said rod or device 28 to stop the loom. Such mechanical connections may be Widely varied within the scope of my invention. I thereby do away with electrical connections which are rendered uncertain because of the customary clogging and coating of the loom parts by lint and dirt.

Referring more particularly to Figs. 1 to 9 inclusive, I have therein represented each strip 50 as having extending from the lower end thereof, a short bracket 58 to the end whereof is pivoted at 59 a lever 60 in the slotted free end of which is inserted the end of a rod or other operating device having an upwardly bent end 62. The said rod 61 preferably rests upon the stop rod 28, and when the latter is lifted the bent end 62 thereof is lifted into the path of movement of a bunter 63 secured to. and downwardly extending from a rod 64 rotatably mounted in bearings 65 secured to the under side of the beam 5 ofthe lay. The bunter 63 is provided with two members jointed at 66 and a spring 67 is employed normally to hold the parts in the position shown in Fig.

A engages.

3. The construction is such that upon movement of the lay toward the right, viewing Fig. 3, the hunter 63 will engage the hooked end 62 of the rod 61 when the latter is lifted upon warp fault indication and in asmuch as the hunter cannot yield rearwardly at its joint 66, the stopping action of the loom is initiated upon the movement of the lay toward the right. The construction is such, however, that upon movement of the hunter 63 toward the left, viewing Fig. 3, it may yield upon engagement with the hooked end 62 of the rod 61.

Viewing particularly Fig. 9, it will be observed that the rod 6% is mounted for rockin g movement in its bearings 65, and is provided with a coiled spring 68 connected thereto and to one of its hearings in such manner as to permit rocking movement of said rod upon engagement of the hunter 68 with the hooked end 62 and thereafter to re turn the rod 61 to normal position. At a suitable point intermediate its ends, the said rod 6 1 is provided with a trigger 69 pivoted thereto at 70 and having a holding spring 71. The trigger 69 in its normal position restrains from loom stopping movement a rod 72, which is here shown as provided with a lateral lug 7 3 with which said trigger The said rod 72 is mounted for sliding movement in suitable guides 74 suitably secured to the under side of the lay, and if desired may be longitudinally slotted as indicated at 7 5 to receive a guiding cross pin 76 in one of the bearings 74. The rod 72 is thereby held from twisting movement and is adapted to be projected toward the right, viewing Fig. 9, by a coiled spring 77 when the rod 6% has been sufficiently rotated by i the lifting movement of the stop rod 28 to remove the trigger 69 from the lug 73.

If desired and as shown in Fig. 9, I may provide a suitable stop 78 to prevent undue ,longitudinal movement of the rod 72, said stop being positioned adjacent one end of the rod 72 to receive the impact thereof. At its opposite end the rod 7 2 is bent as indicated at 7 9 and has secured thereto a block 80 (see Fig. 8) having extending therefrom an arm 81 preferably provided with an antifriction roll 82. The free end of the arm 81 and its roll 82 are adapted to be moved upon the forward beat of the lay, across the slot 83, wherein the shipper lever 6 moves when freed from its notch 84. The said shipper lever when released from its slot is moved by the spring 85 shown in Fig. 2, toward the left viewing Fig; 8, and inasmuch as at such time the roll 82 is positioned transversely of the slot 83, it receives the impact of the shipper lever 6, and hence moves the rod 72 toward the left viewing Figs. 8 and 9 and resets the same in the position shown in the latter figure.

Any suitable operative connection between the rod 7 2 and the shipper lever 6 may be employed. Herein for the purpose I provide the block 80 with a downward extension 85 shown in Fig. 1, so positioned that when the rod 72 is projected upon warp fault toward the right viewing Fig. 9, the said extension is brought in line with a dagger like projection 86 upon a hunter 87 mounted for sliding movement upon the loom frame. Upon the forward movement of the lay, the projection 85 engages the dagger like projection 86 and imparts movement thereto to the right viewing Fig. 1, thereby causing the same to rock upon its pivot a bell crank lever 88 pivoted at 89 upon the loom upright. The free end of the longer arm of the bell crank lever and which is in engagement with the shipper lever 6, forces the latter from its notch 84, and hence the said lever is rocked upon its pivot 6 and moves the belt shipper 9 so as to shift the belt from the fast to the loose pulley. As previously set forth, the movement of the shipper lever to shift the belt from the fast to the loose pulley effects the resetting of the rod 72. If desired, and as indicated in Fig. 2, I may provide a guide bracket 90 for the arm 81 in its re-setting movement.

It will be understood from the foregoing description that the warp stop device is positive in its action and is not dependent upon the action of gravity. By avoiding the use of warp drops, I do away with the necessity of drawing the warp ends through drop devices in addition to the heddles, and in the preferred embodiment of the invention, 1 am enabled to utilize the so-called cotton harnesses which do not chafe or fray the warp ends.

Having thus described one illustrative embodiment of my invention, I desire it to he understood that although specific terms are employed, they are used in a generic and descriptive sense and not for purposes of limitation, the scope of the invention being set forth in the following claims.

Claims.

1. Loom stopping mechanism comprising in combination, a heddle frame having dupleX heddles with connected eyes for the reception of warp threads, means to limit and depress said heddle frame, a shipper mechanism, and means solely mechanical between said shipper mechanism and said heddles to stop the loom upon the shifting in position of said heddle eyes, caused by breakage of warp end.

2. Loom stopping mechanism comprising in combination, a heddle frame having duplex heddles with connected eyes for the reception of warp ends, means to lift and depress said frame, a shipper mechanism, and means solely mechanical between said shipper mechanism and said heddles to stop the loom upon the shifting in position of tween said heddles and saidshipper mechanism, thereby to operate the latter upon the shifting of any of said pairs of heddles when the frame is in its operative position.

4. Loom stopping mechanism comprising in combination, a heddle frame having a series of heddles provided with eyes for the reception of warp ends, said heddles being arranged in sets, and the members of each set being operatively connected for conjoint movement in stopping the loom, a balanced stop device, shipper mechanism, and connections between said stop device and shipper mechanism to operate the latter upon displacement of said balanced stop device owing to warp fault.

5. Loom stopping mechanism comprising in c0mbination,'a heddle frame having a series of heddles provided with warp end receiving eyes, a balanced stop device supported by said heddles, shipper mechanism and mechanical connections between said stop device and shipper mechanism to operate the latter upon the occurrence of warp fault.

6. Loom stopping mechanism comprising in combination, a heddle frame having a series of heddles provided with warp end receiving eyes, a balanced stop device, said heddles having means in operative contact with said device, shipper mechanism, and means to operate the shipper mechanism from said stop device upon shifting movement of a heddle eye from its normal posi: tion.

7. Loom stopping mechanism comprising in combination, a heddle frame, a series of heddles arranged in pairs and having warp end receiving openings, a transverse device coacting with said heddles and adapted to be displaced thereby, a shipper mechanism, and connections solely mechanical between said device and shipper mechanism.

8; Loom stopping mechanism comprising in combination, a heddle frame, duplex heddles having warp end receiving openings, a device arranged transversely of the heddles, looped connections between said device and heddles, shipper mechanism, and connections solely mechanical between said device and shipper mechanism to stop the loom in the event of warp fault. I

9. Loom stopping mechanism comprising in combination, a heddle frame, a series of duplex heddles having warp end receiving openings, a device arranged transversely of the heddles adapted to be displaced by said heddles upon Warp fault, a member resting upon and adapted to be moved by said device upon warp fault, shipper mechanism, and connections between said member and said shipper mechanism.

10. Loom stoppingmechanism comprising in combination, a heddle frame, a series of duplex heddles having warp end receiving openings, a device arranged transversely of the heddles co-acting with but adapted to be lifted by said heddles upon warp fault, a member resting upon said device, shipper mechanism, and a going part of the loomco-acting with said member to operate the shipper mechanism in the event of warp fault. v v p 11. Loom stopping mechanism comprising in combination, a heddle frame, a series of duplex heddles having warp end receiving openings, afdevice arranged transversely of the heddles adapted to be lifted by said heddles upon warp fault, a lay, a member adapted to be lifted by said transverse device into the path of movement of said lay, shipper mechanism, and operative connections between the lay and shipper mechanism to stop the loom.

12. Loom stopping mechanism comprising in combination, a heddle frame having heddles provided with warp end receiving formations, a transverse rod, counterbalancing means therefor, connections between said rod and said heddles, shipper mechanism, and connections between said rod and said shipper mechanism to stop the loom in the event of warp fault.

13. Loom stopping mechanism compris ing in combination, a heddle frame, duplex heddles mounted thereon, a stop device, loops extending from said'heddles about said stop device, and connections between the members of each loop. 7

14. Loom stopping mechanism comprising in combination, a heddle frame, 'a series.

piece of textile material having two warp end receiving eyes, a transverse stop bar,

and a series of loops each having its ends connected to the lower portion of itsheddle device, and extending about said bar, the

members of each loop being knotted together between its heddle device and said stop bar.

16. Loom stopping mechanism comprising in combination, a heddle frame having upper and lower cross members, a duplex heddle mounted thereon and consisting of a continuous piece of textile material passing thereabout and provided with two warp end receiving openings, a transverse stop bar of non-corroding material, and bar displacing connections between the same and said heddle.

17 Loom stopping mechanism comprising in combination, a heddle frame having upper and lower cross members, a duplex heddle device mounted thereupon and consisting of a continuous piece of textile material having two warp end receiving formations, a transverse bar of non-corroding material, connections between said device and said stop bar, shipper mechanism, and operative connections between said stop bar and said shipper mechanism.

18. Loom stopping mechanism comprising in combination, a heddle frame having upper and lower cross members of noncorroding material, a series of duplex heddles, each consisting of a continuous piece of textile material, mounted upon said cross members for movement thereabout, a transverse stop bar of non-corroding material, connections therefrom to said duplex heddles, shipper mechanism, and connections solely mechanical between said sto bar and said shipper mechanism.

19. Loomrstopping mechanism comprising in combination, a heddle frame having upper and lower cross members, duplex heddle devices mounted upon said cross members, connections for imparting shedding movements to said heddle frames, shipper mechanism, operative connections between said duplex heddle devices and said shipper mechanism, and coarse and fine adjustments for positioning said heddle frames.

20. Loom stopping mechanism comprising in combination, a heddle frame provided with heddles, a stop member having connections to said heddles, shipper mechanism, and a pair of co-acting, parallel rods between and operatively connecting said stop member and said shipper mechanism and having loom stopping movement relative to each other.

2-1. Loom stopping mechanism comprising in combination, a heddle frame having duplex heddles, a transverse stop bar operatively connected thereto, shipper mechanism, and a pair of co-acting bars between and operatively connecting said stop bar and said shipper mechanism, and constituting a portion of the train of said stopping mechanism, said bars being respecweaves tively mounted for rotary and axial movement.

22. Loom stopping mechanism comprising in combination, a heddle frame provided with heddles, a stop bar operatively connected to said heddles, shipper mechanism, an axially movable bar to operate said shipper mechanism, and trigger means actuated by said stop bar to release said axially movable bar.

23. Loom stopping mechanism comprising in combination, a heddle frame for duplex heddles, a transverse stop bar connected to said heddles and adapted to be displaced upon warp fault, shipper mechanism, and operative connections between said shipper mechanism and said stop bar, said connections including two parallel rods re spectively mounted for rotary and axial movements, and releasing means connecting said bars.

24. Loom stopping mechanism comprising in combination, a heddle frame having heddles, a transverse bar operatively connected to and adapted to be displaced by said heddles upon warp fault, shipper mechanism, an axially movable rod between and operatively connected to said stop bar and said shipper mechanism, means to release said axially movable bar, and means to re set said bar.

25. Loom stopping mechanism comprising in combination, a heddle frame having heddles, a transverse bar operatively connected to and adapted to be displaced by said heddles upon warp fault, shipper mechanism, an axially movable rod between and operatively connected to said stop bar and said shipper mechanism, means to re lease said axially movable bar and means automatically'to re-set said bar.

26. Loom stopping mechanism comprising in combination, a heddle frame having heddles, a stop device operatively connected thereto and adapted to be displaced thereby, shipper mechanism, connections between said stop device and shipper mechanism and including a pair of co-acting rods, one of which is axially movable, means for restraining said rod from axial movement and for releasing the same upon warp fault, and means for resetting said axially movable rod.

27. Loom stopping mechanism comprising in combination, a heddle frame, flexible guiding strips therefor between the side frames of the loom, stop heddles supported by said frame, a cross device supported by said flexible guiding strips, and operatively connected to said stop heddles to be moved thereby in the event of warp fault, shipper mechanism, and connections solely mechanical between said cross device and said ship-- per mechanism.

28. Loom stopping mechanism having a lid heddle frame, flexible guiding strips there-- for, a device mounted in said flexible guiding strips, means actuated upon thread. fault to move said device, shipper mechanism, and connections solely mechanical between said device and said shipper mechanism.

29. Loom stopping mechanism having a heddle frame, flexible guiding strips therefor, a counterbalanced device mounted in said flexible guiding strips, means actuated upon thread fault to move said device, shipper mechanism, and connections solely mechanical between said device and said shipper mechanism.

30. Loom stopping mechanism compising in combination, a heddle frame having upper and lower cross members, a duplex heddle mounted thereon, a transverse stop bar, connections between said duplex heddle and said stop bar, a mechanical member adapted to be displaced by said stop bar, shipper mechanism, and connections solely mechanical between said member and said shipper mechanism.

31. Loom stopping mechanism comprising in combination, a heddle frame, heddles mounted thereon, a stop device operatively connected to said heddles and adapted to be lifted thereby upon Warp fault, a mechanical member adapted to'be lifted by said stop device, shipper mechanism, and operative connections between said member and said shipper mechanism. 7

32. Loom stopping mechanism comprising in combination, a heddle frame, duplex heddles mounted thereon, a transverse stop bar operatively connected to said heddles and adapted to be lifted thereby upon warp fault, a mechanical member resting upon said stop rod, shipper mechanism, and operative connections between said member and said shipper mechanism.

33. Loom stopping mechanism comprising in combination, a heddle frame, duplex heddles mounted thereon, a stop bar adapted to be displaced by said duplex heddles upon Warp fault, a lay, a member adapted 'to'be displaced by said stop rod into the path of movement of said lay, shipper mechanism, and connections between the lay and the shipper mechanism.

34. Loom stoppingmechanism comprising in combination, a heddle frame having duplex heddles mounted thereon, a transverse stop device operatively connected to said heddles and adapted to be displaced upon Warp fault, a lay, a member co-acting with said stop device and adapted to be moved thereby into the path of movement of the lay, shipper mechanism, and operative connections between the lay and the shipper mechanism.

35. Loom stopping mechanism comprising in combination, a heddle frame having upper and lower cross members, duplex heddles mounted thereon, tensioning means for said heddles and stopping means coacting with said heddles.

36. Loom stopping mechanism comprising in combination, a heddle frame having cross bars, duplex heddles mounted thereon, means connected to a cross bar to tension said heddles, shipper mechanism, and operative connections between said duplex heddles and said shipper mechanism.

37. Loom stopping mechanism comprising in combination, a heddle frame having upper and lower cross bars, duplex heddles mounted thereon for movement thereabout, a spring and adjusting means operatively connected to one of said cross bars to tension said duplex heddles, shipper mechanism, and operative stopping connections between said heddles and said shipper mechanism.

38. Loom stopping mechanism comprising in combination, a harness frame having cross pieces of non-corrosive material, a

series of duplex heddles each consisting of a continuous piece of material having a pair of eyes for the reception of warp ends, shipper mechanism, and operative connections between said duplex heddles and said shipper mechanism.

39. Loom stopping mechanism comprissizing to prevent said knots from slipping,

said heddles having unvarnished upper and lower portions to permit the same to slip easily over said heddle frame cross members, and a stop mechanism co-acting with said heddles.

41. 'In a loom stopping mechanism, a heddle frame having non-corrosive cross members. duplex heddles mounted thereon, said heddles having eyes made of half knots coated with a suitable sizing to prevent said knots from slipping, said heddles having unvarnished upper and lower portions to permit the same to slip easily over said heddle frame cross members, and a stop mechanism cooperating with said heddles.

42. In a loom stopping mechanism, a heddle frame having'upper and lower cross members, a set of heddles mounted thereon, each heddle having eyes for the reception of warp ends, means co-acting with said heddle frame to cause the heddles to be loosened and tightened as the frame is lifted and depressed, and means coacting with said heddles to stop the loom upon the occurrence of warp fault.

43. In a loom stopping mechanism, a shipper device, a heddle frame having a series of duplex heddles slidably mounted thereon, said heddles having eyes for the reception of warp ends, means connected with said heddle frame to cause the duplex heddle pertaining to a faulty warp end to become automatically loosened and to cause the duplex heddles pertaining to perfect warp.

ends to become automatically tightened when said heddle frame is brought into its operative position, combined with means connecting said duplex heddles with said shipper device.

44. Loom stopping mechanism comprising, in combination, a heddle frame having upper and lower cross members, a duplex heddle mounted thereon and consisting of a continuous piece of pliable material passing thereabout and provided with two warpend-receiving open eyes, a transverse stop device of non-corroding material, and flexible device-displacing connections between the same and said heddle.

4-5. Loom stopping mechanism comprising in combination a heddle frame having a series of heddles provided with warp end receiving eyes, a balanced stop device normally partaking of the swaying movement of the harness incidental to the normal weaving operation, shipper mechanism, and mechanical connections between said stop device and shipper mechanism to operate the latter upon the occurrence of warp fault.

at. Loom stopping mechanism comprising in combination, a heddle frame having a series of heddles provided with warp end receiving eyes, a balanced stop device normally partaking of the swaying movement of the harness incidental to the normal weaving operation, shipper mechanism, and means to operate the shipper mechanism from said stop device upon shifting move ment of a heddle eye from its normal position. 7

17. Loom stopping mechanism comprising in combination, a heddle frame, a series of heddles arranged in pairs and having warp end receiving openings, a transverse device co-acting with and normally partaking of the swaying movement of the harness incidental to the normal weaving operation and adapted to be displaced thereby, a shipper mechanism, and connections solely mechanical between said device and said shipper mechanism.

48. Loom stopping mechanism comprising in combination, a heddle frame having a series of heddles provided with warp end receiving eyes, a balanced stop device operatively connected with the heddles, and supported in substantially the plane of movement thereof, shipper mechanism, and

mechanical connections between said stop device and said shipper mechanism to operate the latter upon the occurrence of warp fault.

49. Loom stopping mechanism comprising in combination, a heddle frame having a series of heddles provided with warp end receiving eyes, a balanced stop device eX- tending along said series of heddles and operatively associated therewith, shipper mechanism, and means to operate the shipper mechanism from said stop device upon shifting movement of the heddle eye from its normal position.

50. Loom stopping mechanism comprising in combination, a heddle frame having a series of heddles provided with eyes for the reception of warp ends, a balanced, normally quiescent, stop device operatively associated with said heddles and mounted for bodily movement thereby, shipper mechanism, and connections between said stop device and shipper mechanism to operate the latter upon displacement of said stop device owing to warp fault.

51. Loom stopping mechanism comprising in combination, a heddle frame having a series of heddles provided with warp end receiving eyes, a balanced, normally quiescent, stop device mounted for movement in a path adjacent to the path of movement of said heddles, shipper mechanism, and mechanical connections between said stop device and shipper mechanism to operate the latter upon the occurrence of warp fault.

52. Loom stopping mechanism comprising in combination, a heddle frame, a series of heddles provided with warp end receiving eyes, a balanced, normally quiescent stop device, shipper mechanism, and means to operate the shipper mechanism from said stop device upon shifting movement of a heddle eye from its normal position.

53. Loom stopping mechanism comprising in combination, a heddle frame, a series of heddles arranged in pairs and having warp end receiving openings, a transverse device co-acting with said heddles and adapted to be displaced by indicating movement of a pair of heddles, a shipper mechanism and connections solely mechanical between said device and said shipper mechanism.

54. Loom stopping mechanism comprising in combination, a heddle frame, a series of heddles arranged in pairs and having warp end receiving openings, a transverse device co-acting with said heddles and adapted to be displaced by indicating movement of a pair of heddles due to fault of a single warp end, a shipper mechanism, and connections solely mechanical between said device and said shipper mechanism.

55. Loom stopping mechanism comprising in combination, a heddle frame provided with heddles, a stop member having connections to said heddles, shipper mechanism, a

lOO

pair of co-acting, parallel rods between and operatively connecting said stop member and said shipper mechanism, means to restrain said rods from relative movement, and means to permit relative movement thereof.

56. Loom stopping mechanism comprising in combination, a heddle frame provided with heddles, a stop member having connections to said heddles, shipper mechanism, a pair of co-acting, parallel rods between and operatively connected to said stop member and shipper mechanism, means to restrain said rods from relative movement, and means to permit relative movement thereof, said relative movement thereby effecting loom stoppage through said shipper mechanlsm.

57 Loom stopping mechanism comprising in combination, a heddle frame having duplex heddles, a transverse stop bar opera tively connected thereto, shipper mechanism and a pair of co-acting bars between and operatively connecting said stop bar and said shipper mechanism and constituting a portion of the train of said stopping mechanism, said bars having interengaging means and being respectively mounted for rotary and axial movement.

58. Loom stopping mechanism comprising in combination, a heddle frame having duplex heddles, a transverse stop bar operatively connected thereto, shipper mechanism, and a pair of co-acting bars between and operatively connecting said stop bar and said shipper mechanism and constituting a portion of the train of said stopping mechanism, said bars being respectively mounted for rotary and axial movement, said bars being restrained from relative movement during the normal operation of the loom but having relative movement to effect loom stoppage in the event of defective operation.

59. Loom stopping mechanism comprising in combination, a heddle frame provided with heddles, a stop bar operatively connected to said heddles, shipper mechanism,

an axially movable bar to operate said shipper mechanism, and trigger means actuated by said stop bar to release said axially movable bar, said axially movable bar beingwith heddles, a stop bar operatively connected to said heddles, shipper mechanism, an axially movable bar to operate said shipper mechanism, and trigger mechanism actuated by said stop bar to release said axially movable bar, said axially movable bar being mounted at the under side of the lay. In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses;

RANDOLPH CROMPTON. Witnesses:

DOROTHA B. RIoE, MIRIAM V. ORoMrToN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. O.