US1832222A - Warp stop motion - Google Patents

Description

Nov. 17, 1931. H. E. KHOURY ET AL WARP STOP MOTION Filed May 23. 1930 5 Sheets-Sheet Nov. 17, 1931. H. E. KHOURY ET AL WARP STOP MOTION Filed May 23, 1930 5 Sheets-Sheet 2 I N 1931- H. E. KHOURY ET AL 1,832,222

WARP STOP MOTION Filed May 25, 1930 5 Sheets-Sheet 3 gwumioz f/arrq E. M009 56,0h Giffznzer;

Ma l

Nov. .17, 1931. H. E. KHbuRY ET AL WARP STOP MOTION Filed May 23, 1930 5 Sheets-Sheet 4 gwuzntoc Nov. 17, 1931. H. E. KHOURY ET AL 1,832,222

WARP STOP MOTION Filed May 23. 1930 5 SheetsSheet 5 ?atented Nov. 17, 1931' T-ES HARRY E. KHOURY AND JOSEPH MENZER, OF NEW BEDFORD, MASSACHUSETTS, AS-

SIGNOR-S T KHOURY WARP STOP MOTION; ING, OF NEW" BEiDFORD, MASSACHUSETTS,

A CORPORATION OF MASSACHUSETTS wanr s'ror Morton Application filed May 23,

' in connection with that type wherein the shed forming heddles perform the additional function of detector wires which serveto stop the loom whenever one of the warp threads breaks or drops.

Stop motions of this type are broadly old, and are illustrated, for example, in my Patents Nos. 1,527,195 and 1,52'Z,196, granted February 24, 19:25. This application is a continuation in part of my copending application Serial No. 249,960, filed January 27,1928. i

An object of the invention is to provide a stop motion which-is simple in construction, and requires little or no adjustment throughout extended periods of operation, and

which, because of its simplicity of construction, isl'accurate and positive in operation, and may be readily applied to a loom. 1

A further object of the invention is to pro i vide amechanism which may be readily applied to a loom, irrespective of the number of its harnesses or harness frames.

One objection to stop motions, which in ment to the bar, so that the bar isrocked atexactly the proper position of the harness frame, and is released for rocking movement in the reverse direction at exactly the proper point, whereby the detector bar will not be locked except by heddles which have fallen.

An object of the present invention is to provide a construction in which the dwell of the locking position of the detector bar is practically fixed by the moving contact parts which move the detector bar to the locking position and in which the contact parts are separated by means other than the upward movement of the harness frame, so that the detector bar may quickly move from its detecting position when not engaged during its detecting movement by a fallen hed- 1930'. Serial No 455,024.

die. The invention seeks to provide an improved construction for raising and lowering the cont act element; the means being preferably of. adjustable character. The invention also aims to provide a simplified construction of parts which will permit'quick separation of the contact elements. j

The presentinvention-also seeks to pro vide a construction which will operate as de-v sired without the necessity for adjusting the parts frequently to maintain an exact timmg in the operation of its various parts. More specifically, the inventlon has for an object the provision of a contact device ontha heddle framewhich, after imparting a.

detecting movement torthe detector bar in the heddle frame, may have a continued PATENT OFFICE movement independently of the detector bar.

Furthermore, the invention seeks to provide a device which, durlng such continued movement, is adapted to hold the detector bar.

against reverse movementand is adapted to impart reverse movement to the detector bar.

Furthermore, the invention'seeks to accomplish these objects with a construction which is simpler, and hence more economical to install and operate than devices which have heretofore been developed.

Th invention also has as an object the provision of animproved construction for the contact element which is engaged by the member on the heddle frame. ore specifically, the invention has as an object the provision of a-contact element adapted to slide horizontally away from the lay,.thereby avoiding injury to the operators hands should the latter be caught between the lay and contact element These and other objects of a similar nature will become apparent as the description proceeds in connection with a preferred embodiment shown inthe accompanying drawings, wherein: s r 5 Figure 1 is a fragmentary cross sectional View Figure 2 is a vertical sectional view on the line 2 -2 of Figure 1, looking in the direction of the arrows.

Figure 3 is a fragmentary perspective showing the means on the heddle frame for actuating the detector bar.

Figure 4 is a fragmentary top plan view with parts in section.

Figure 5 is a fragmentary view showing the position of the detector bar with relation to one of the heddles when the latter has not fallen.

Figure '6 is a 'view similar to Figure 5 showing the detector bar locked'by' a dropped heddle.

Figure 7 is an elevational view of the upper portion of a harness frame showing a moditied construction and av fixed contact with which it cooperates.

' Figure Sis an end or edge elevational view looking toward the right in Figure 7.

Figure 9 is a fragmentary elevational view taken from the'opposite side of the heddle frame shown in Figure 7, showing the position of the contact finger after it has passed the stationary contact.

Figure 1.0 is an end elevational View lookingtoward the left in Figure 7.

Figure 11 is a fragmentary elevational view showing a. modified construction, and

Figure 12 is an edge view looking toward the left in Figure 11.

Referring to the drawings for a more detailed description, 10 indicates a portion of the loom frame in which is journalled the crank shaft 11 driven by suitable means (not shown). Between the frame lO and a corresponding frame portion on the opposite side of the loom (not shown), are disposedthe heddle or harness frame 12, which are raised and lowered by the usual straps (not shown).

connected to the frames at their upper ends.

Theseheddle frames, two of which are partially shown in Figure 1, are of the usual rectangular formation, having upper and lower cross pieces 13 connected by vertically disposed side pieces 14 which, intermediate their ends, receive upper and lower pairs of cross bars 15. These cross bars extend through openings in the upper and lower ends of heddles 16. In each heddle frame, there is mounted, preferably above the upper cross bar 15, one or more detector bars 17, the number of'detecto'r bars depending, of course,

upon" the number of banks of heddles arranged within the frame. 7

As shown clearly in Figures 3 and 5, each detector bar between its ends is non-circular in cross section and has a rib 18. The heddle openings 19, through which the detector bars extend, are formedto permit free rocking movement of the bars when the warp threads are unbroken, but are adapted to lock the bars against such movement whenever one of the warp threads break. For this purpose, the slots'19 in the heddles are reduced as indicated at 20, to receive the rib 18 upon the detector bar, and, as will be understood, whenever one of the warp threads breaks or patents above referred to.

The present invention relates to certain other features of related and cooperatmg structure which will now be described.

Each detector bar, as its heddle frame lowers, has imparted thereto a detecting movement, "1. e., a movement to a position in which it is adapted to be locked by any one of the heddles which has fallen. Such a detecting position is shown in Figure 5, and the manner in which the bar is locked against movement away, from this position by a fallen heddle, is illustrated in Figure 6.

In the present instance, the movement of the detector bar is a rocking one, and the means for causing this movement will now be described. On-the vertical strip 1 1 of each heddle frame is positioned a bracket 21 having outwardly projecting lugs 21, 21" 'vertically spaced apart and having openings which receive for sliding movement the ends of a detector actuating member 22 (Figure 3) The member 22 has associated therewith cam means for rocking the detector bar; this cam means consists of a slot 23 having a central inclined portion 2 1 and therebelow an extension 23, which serves a purpose to be later described. The detector bar 17 projects through thebracket and carries a pin 25 which projects into the slot 23, so that as the actuating member 22 is moved upwardly and downwardly, the detector bar 17 is rocked by means of the inclined or cam portion 2 1. The member 22 is normally maintained in its lowered position and returned to the same when'relcased by means'of a spring 26 surrounding the same and bearing upwardly against the lug 22 ofthe bracket; the spring abuts a plate 27 through which the member 22 is freely slidable, the plate being held against rotation-by downwardly turned tips 28 on the lug 21".

The member 22 is moved upwardly by means of a contact finger 29 pivoted at 30 upon the bracket 21 and extending through an opening 31 in the member 22. As will be understood, upward movement of the finger 29 causes the same to engage the member 22 at the open ng 31, and to slide the latter upwardly in its bracket 21. This same movement will rotate the detector bar 17 to its detecting position (Figure 5), and when upward pressure, upon the finger 29 is released, the spring 26, which has been tensioned by the upward movement of the member 22, will assist gravity in returning the parts shown inFigureB. Y W V As will be apparent from an inspection of Figure 3, the rotating or detecting movement of the bar 17 will have been completed by the time the pin 25 reaches the lower endof' the inclined portion'2 t of slot 28. That is to say, at the lower end of the latter, the detector bar will have reached the position shown in Figured The finger 29 and actuator member 22 are then still free to continue their upward movement independently ofthe detector bar because of the slot ex'ension 23. This is an important feature of the-construction since, as will be understood, movement is.

imparted to the detector bar as the heddle rame moves by engagement of the finger: 29 by a contact member arranged on the loom in the path of the finger 29. One trouble which has heretofore beenobserved with stop motions of this character, is thatthey cease to function properly after being in use for some time, due to the varying period'of engagement of the contact finger 29 with its associated contact member disposed in the path thereof.

This variation is due to stretching of the straps su porting the harness frame, and to the working in or wearing of other associated parts of the loom. It is not possible tocontrol accurately the changes inthe movement of the harness frame, due to these causes,

and yet it is desirable to have a constant or invariable movement of'the detector bar, regardless of variations in the movement of the eontact finger 29 and inthe period of its en gagement with the contact element disposed in its path. The present invention provides this fixed or constant movement of the detector bar 17 by permitting the finger 29 and actuator member 22 to continue their movement independently of the detector bar, after.

the detector bar reaches its detecting position (Figure 5). Hence, there 1s imparted to the detector bar a constant or invari able move ment by allowing the contact finger 29 a freemovement when there is excessive dropping of the heddle frame and protracted engagement of the finger 29 with its associated contact.

Moreover, it is to be noted, that during-this; continued movement, the contact bar is held. in its detecting posilby the slot extension 23 tion.

Referring now to the means for actuating the finger 29 and for stopping the loom, this mechanism comprises a bracket 33 secured below the shaft 37which is disposed directly above a cam a2, adapted to raise and lower the arm, and thereby to rock the shaft 37'.

Upon the shaft 37 and between the bearings 35 and 36 is positioned an arm 42',through one end 43 of which the shaft extends, the

arm beingsecured to the shaft in fixed position by a set screw 44;. The outer end of the arm is bored at 4:5 to receive a substantially L-shaped contact carrying rod 46, the upper horizontal portion 46" of which has fixed thereon a bracket 47 which is channel shaped in cross section; The rod extends through opening 48 disposed in spaced webs or flanges 4E9 and a set screw 48 projects through a lower web 50 on the bracket (Figure 1) to abut the Vundersurface of the rod, thereby clamping the bracket in position against both longitudinal and rotative movement. Above the rod 46', there is secured to one of thewebs 49 (Figure 1) a complemental bracket por tion 54-; for this purpose, a bolt 58 extends through a slot 52 in the web 49 and through the bracket portion 5 The slot 52 permits the brac tet portion 54: to be he 'izontally adjusted, which is desirable for thereason that the same carries a contact element 55 which cooperates with the finger 29 upon the harness frame. This contact element is disposed upon a pin 56 secured to anupwardly turned lug 57 upon the bracket portion 54, the pin being surrounded 'by a spring 57 which normally presses the contact element 55 to the position shown in Figure 2. The element 55 is slidable longitudinally of the pin against the spring, so that should a finger or other part of the operator be caught between the end 55 of the contact element and the loom lay L (Figure 2), the contact element will yield and thus The normal position of the avoid injury. contact element may be fixed by adjusting the bracket 54: on the complemental bracket portion 47' and, as will be understood, it may be vertically adjusted by raising and lowering rod 46, which is held in bore 45 of arm'42'3 by :set screw 45' (Figure 4).

As'will be observed from Figure 1, contact element 55 is in the vertical path of the contact fingers disposed'on the heddle frames, and as the heddle frames are lowered, the fingers 29 willbe moved upwardlyas they engage the contact element 55, thus imparting a rocking movement to the detector bars. At one end, the contact element 55 is pro vided with a depending lip 55 to prevent the finger 29 from passing beneath the contact element, should the harness frame swing and cause'thefinger to drop slightly below the'horizontal plane of the'contact element.

As has been heretofore explained, the contact element 55 carried through rod 46 upon the vertically movable arm 42'', which risesand falls with the movement of the rock shaft 37 upon which it is positioned. When a heddle has fallen, rocking movement of the detector bar will cause the rib 18 upon the bar tointerlock with the. receiving slot 20; in the rocked heddle and, upon upward movement of the harness frame, the rocking of the detector bar will cause the loom to stop by operating mechanism hereinafter described. If there is no fallen he,ddle,.however, it is desirable that the detector bar be released before the heddle frame rises to any substantial extent. should almost an instantaneous release of the detector bar subsequent to its detecting movement. .The present invention permits this release not only by the upward movement of the harness frame, but, as described in my copending application, by imparting a movement to the contact element relative to the linger 29. The cam 42 by actuating the arm 42 of rock shaft 37 immediately following engagement between the contact finger 29 and contact element 55, causes the latter to be lowered slightly. This floating or moving support for the contact 55 maintains it substantially still until the detector bar has been given its full rocking movement, but hastens separation of the contact element 55 and finger 29 by positively lowering the contact element 55 away from linger 29, immediately following movement of t ie detector bar to its detecting position. Thus, the detector bar will be free to return to its normal or nondetecting position before the harness frame has risensufliciently to allow the heddles torest on the detector bar. In order that the desired movement of parts may be obtained, will be understood that the cam 42 may be rotatably adjusted, as desired, or replaced by another cam and, furthermore, the cam is positioned above the cont-act element 55 and v in the path of the finger 29, a second contact element which will be engaged only if the detector bar has been locked, and thus holds the finger in'the uppermost position to which it is moved (Figure 1) upon engagement with the lower contact element 55. The bracket 33 (Figure 4) has a laterally directed lug 59 formed with an opening to receive the lower end of a standard 60 held therein 3y a set screw 61. At its upper end, the standard carries a stud 62 on which. is pivotally mounted a lever 63 at a point intermediate its ends, so as to provide oppositely extending portions 63 and 64. The portion 64 carries a bracket corresponding to the bracket 47 ant having parallel webs 66, 67 through 71 extending through a slot 7 2 and through In other words, there the portion 70. A depending'lug 73 carries a pin 74 on which is slidably mounted the contact element 7 5, the latter being yieldably held against horizontal sliding movement on a pin 74 by means of a spring 76. Should the finger 29 be locked in its upper position instead of returning to depressed position (Fig. 1) to which it isreturned upon reverse move ment of the detector bar, the finger will engage the upper contact and thus rock the lever 63, so that its rear portion isdepressed.

The rear portion of the lever is connected by meansof a link 78 to a dagger 7 9, the link freely, projecting through the dagger (Figure 2)" and having a collar 80 thereon, which serves to lift and support the dagger so that its forward end 81 is normally disposed beneath or out of the path of a pin 82 upon the lay. When the link is dropped, due to move ment of the contact 75 and its carrying lever the forward end 81 of the dagger will be raised by the gravitational lowering of its heavier rear end 81, and thus will move into the path of the pin 82. The dagger is supported by means of a bracket 83 upon a rod 8%, one end 85 of which is connected to an operating fork 86 for the shipper lever 87. The opposite end 88 of the rod is supported for sliding movement in a block 89 carried by a vertically disposed pin 90 mounted on the loom frame (Figure 1). The dagger is normally supported in the position shown in Figure 2 by means of the link 78 and nut 80 at its lower end, and thus the dagger will be normally out of the path of its engaging member or pin 82 upon the lay.

As will be understood, so long as the dagger is supported in the position illustrated in Figure 2, the operation of the loom will continue. But should the link 78 lower its c a gger supporting collar 80, the rear end of the dagger will gravitate downwardly and its forward end 81 will move upwardly into the path of the pin 82 which, upon engagement ivith the dagger, will actuate the shipper ever.

Referring to Figures 7 to 10 inclusive, there is shown a modified form of mechanism for permitting the detector bar actuating means on the harness to have a free movement independently cf the detector bar after the detector bar has been moved to a detecting positiou. This form of mechanism is illustrated as applied to a heddle having a single detector bar 90, with. the usual rib 91 for engagement withthe narrow portion of the heddle slot, and mounted at itsends in the harness frame. A spring 92 at one side of the frame tends to urge the rocking bar to one extreme of its movement, which is limited by a stop finger 93 extending into a groove 94 upon a collar 95 fixed to the detector bar, the spring 92 also extend ng into the same groove.

At the opposite side of the heddle frame. the detector bar carries a collar 96, having a cam surface 97 engaging a cam 98'which is pivoted at 99 upon abracket 100, the axis. 99, as will be observed, extending at a right angle to the axis about which the detector bar rocks. The cam 98 has an outwardly extending contact finger 101, which is normally maintained in the substantially horizontal position illustrated in Figures 7 and 9 bymeans of a spring 102 anchored at103 to the harness frame, and at 10% secured to the cam 98.

When the under edge of the finger 101 en heddle which may have fallen. Should the finger 101 be moved against contact 160 b the harness with et-fcessive pressure, the point 98 will pass the high spot of cam 97 and move to the opposite sides thereof :thus being fr e to continue its movement independently of the detector bar. The downward movement may be continued until the finger 101 passes below the contact 160, and thereafter I Illa-111C181 of. the stop motion in the manner dethe Spring 102 will again move the point or cam 98 to the outer side of cam 97, as shown.

in Figure 9. Asithe finger 101 moves upward past the contact 160 (Figure 9), it will yie d downwardly and tension springl102 which will return it when it has moved past contact 160 to the position in Figure 11;

T he collar 96 upon the rock bar, has'a second cam surface 105 adapted to cooperate with a toe 106 upon the lower end of a lever 107. which is pivoted at 108 on a bracket 109 fixedly secured to the loom frame. A leaf spring 110 bears upon a pin 111 on the lever 107, and normally urges the same toits substantially vertical position illustrated in Figure 9, but upon actuating of the detector bar and its col ar 96, the cam surface 105 engages the toe 106 and moves the lever outwardly away from the harness frame in which an outwardly extending arm 112 thereon is carried to a position beneath a second contact element which may be en 'aged upon upward movement of the harness frame, a suitable contact element being shown, for instance, at in Figure 2. As will be understood, in the event the detector bar is not locked by a fallen heddle when it is rocked through the operation of cam 98 and its finger 101, it will be returned to its normal position by means of spring 92, which has been tensioned through the clockwise movement of the detector bar (Figure 9) and, at the same time, the lever 107 will be drawn inwardly by leaf spring 110, which is tensioned upon outward move ment of the lever away from the harness frame.

It will be observed that these engaging elements-101 and 112 upon the harness frame, are not mounted directly upon the detector bar, but are supported upon brackets onth'e harness frame independently of the detector bar. Moreover, thefinger 101 is adapted to cooperate with a fixed contact, if desired, instead of the fioatingly supported contact 55 of Figure 2. I I

It will be noted that, in this form,provisio'n is made for quickrelease or quick disengagement with the contact elements 101 and 160 by permitting the contact 101 to move downwardly past the fixed contact 160 asrthe heddle frame moves. As soon asthe finger 101passes contact 160 when moving in the direction indicated by the arrow in Figure 7,

the detector bar will be free to move under the influence of spring 92 unless it has been locked by a fallen heddle. As the harness frame moves upwardly to carry finger 101 past contact 160 (Figure 10), the movement downwardly of finger 101 will not afiect the detector bar byits'engagementwith the con"- tact, since .thecam 98'is free for outward movement away from the cam 96 on the detectorbar.

As this device cooperates with the rescribed in connection with the form of Figfurther description is necessary. I

Referring to Figures 11 and. 12 each of the harness frames 115, only one being shown in these views, has positioned thereon a substantially U-shaped bracket 116, the laterally bent end portions 116 of which receivea verticallyshdable member 117 formed with an intermediate U-shaped portion 118. The U- shaped portion 118 has an opening 119 .ures 1 to 6 inclusive, it is thought that no through which projects a contact finger 120 pivot-ed at 121 on thebracket 116. The finger 120 is intended to cooperate with an upper contact corresponding to the contact 7 5 (Fig. 2'). It is actuated upwardly and downwardly by movement of the member 117 which has a cam slot 122 receiving pins 123 carried by a block 124 on the end of the rocking detector bar 125. This bar corresponds in construction to the bar shown in Figure 3-and extends through suitably formed openings inthe heddles The heddles andthe rocking detector bar number of heddle vframes.

the spring 126 which abuts a pin 127 at one end and an abutment nut 128 at its other end, will *move the member 117 downwardly, thereby moving the detector bar away from detecting position and lowering finger 120.

' This lowering movement offinger 120 takes place before the heddle frame rises sufficiently to cause the finger to engage contact member 75.

Upward movement is imparted to the member 117 by means of a pitman 128 in the form of a metal strap having slots 129 therein which receive rigid pins 130 on the heddle frame. These pins permit vertical sliding movement of the pitman and at its upper end the latter is connected by means of a stud 131 formed integrally therewith to the lower end of the member 117 The latter is provided with a plurality of openings 133 into which the stud 131 may be inserted. This construction permits the pitman' to be adjusted relative to the member 117, so as to impart the desired degree of movement to the member 117.

At its lower end the pitman extends below the heddle frame and has a foot portion 135 adapted to engage a lower contact member 136 corresponding in function to the lower contact member 55 (Fig. 2). The contact member 136 is in the form of a platform adapted to engage as many pitmen as are provided, their number depending upon the The contact member has a supporting pin.137 adjustably held in a block 138 by means of a set screw 139, so that the contact member may be vertically adjusted.

The block 139 is longitudinally adjustable along a lever 140 pivotally mounted by means of an arm 141 on a horizontal shaft 142. At an intermediate point the lever rests upon a cam 143 corresponding to the cam 42 (Fig. 2). The cam 143 is arranged upon a shaft 144 and, as will be understood, rotation of the cam will cause the lever 140 with the lower contact 136 to rise and fall. Descending movement of the heddle frame causes the pitman 128 to engage contact member 136 as the latter is in raised position (Fig. 11) and before the heddle frame rises, or at least before it has risen to any appreciable extent, the cam will permit the lever-140 and contact 136 to drop, thereby permitting the finger 120 to drop if the rocking detector bar has not been locked by a fallen heddle.

This construction differs from that previously described primarily in that the lower contact is arranged below the harness frames. This arrangement places many of the moving parts out of the way and may at times be found preferable. Further description of the construction is thought unnecessary in view of the fact that it substantially corresponds in 1 operation to the forms previously described.

" Obviously, numerous modifications may be made in the structure illustrated, and which has been described in detail, and the invention is not limited to details of construction, but includes all modifications which are within the spirit of the following claims.

e claim:

1. In a warp stop motion for looms, a heddle frame, an oscillatory detector bar therein having a plurality of heddles associated therewith, a 'movably mounted finger movable with the heddle frame and adapted upon movement in one directionto impart an oscillatory detecting movement to said bar, and a contact element on the loom adapted to engage said finger as the harness frame moves in' one direction to give said bar a detecting movement, said'finger being movable subsequent to completion of the detecting movement of said. bar and independently of the bar.

2. In a warp stop motion for looms, a heddle frame, an oscillatory detector bar having a plurality of heddles associated therewith, a movably mounted finger movable with the heddle frame and adapted upon movement in one direction to impart an oscillatory detecting movement to said bar, a contact element on the loom adapted to engage said finger as the harness frame moves in one direction to give said bar a detecting movement,

and means for moving the detector bar in the opposite direction when not locked by a fallen heddle, said finger being mounted for movement independently of said detector bar after the bar has completed its detecting movement.

3. In a warp stop motion for looms and in combination with the heddle frame and its shed forming heddles, a detector bar having a detecting movement in said frame and means for imparting a detecting movement thereto as the heddle frame moves, said means being free to continue its movement independently of the bar upon completion of the detecting movement of the latter.

4.111 a warp stop motion for looms and in combination with the heddle frame and its shed forming heddles, a detector bar having a detecting movement in said frame, and means associated with the heddle frame and movable thereon for imparting a detecting movement to the bar as the heddle frame moves, said means being free to continue its movement independently of the bar upon completion of the detecting movement of the latter.

' 5. In awarp stop motion for loomsand in combination with he heddle frame and its shed forming heddles. a detector bar having a detecting movement in said frame, and means movable with the frame and movable thereon for imparting adetecting movcn' ent to thebar as the heddle frame moves, said means being free to continue its movement on the frame independently. of the bar-upon completion of the detecting movement of-the latter.

6. In a warp stop motionfor looms and in combination with the heddle frame" and its shed forming heddles, a detectorbar havlng a detecting movement in said frame, and means associated with the heddle frame and movable thereon for imparting a detecting movement to'the bar as the heddle frame moves, said means being free to'continue its movement on the frame independently of the bar upon completion of the detecting movement of the latter, while restraining the bar against reverse movement.

7. In a warp stop motion for looms and in combination with the heddle frame and its shed forming heddles, a detector bar having a detecting movement in said frame, and means carried by the heddle frame and movable thereon in one direction for imparting a detecting movement to the bar'as the heddle frame moves, said means being free'to continue its movement in said directioninde pendently of the bar upon completion of the detecting movement of the latter, 7 p

8. In a warp stop motion for looms and in combination with the heddle frame and its shed forming heddles, a detector bar having an oscillatory detecting movement in said frame, and means associated with the heddle? frame and movable thereon for imparting a detecting movement to the bar as the heddle frame moves, said means being free to con tinue its movement on the frame independently of the bar uponcompletionof the detecting movement of the latter while restraining the bar against reverse movement.

' 9. In a warp stop motion for looms and in combination with the heddle frame and its shed forming heddles, a detector bar having a detecting movement in said frame, a member carried by the frame and movable thereon, said member being supported independently of the bar, and cam means associated with said member for imparting a detecting movement to said bar when the memberis moved in one direction, said member being free to continue its movement in said direction independently of the bar upon completion of the detecting movement of the latter,

10. In a warp stop motion for looms and in combination with the heddle frame and its shed forming heddles, a detector bar having a rocking detecting movement in said frame, a member carried by the frame and movable thereon, said member being supported inde pendently of the bar, and cam meansassociated with said member for imparting a detecting movement to said bar when the member is moved in one direction, said member being free to continue its movement in said direction independently of the bar upon completion of the detecting movement of the latter.

11. In a warp stop motion for looms and in tcombi'nation with the heddle frame and its.

shed forming h-eddles, a. detector bar having a detecting movement in said frame, a member carried by the frame and movable thereon, said member being supported independently of the bar, and cam means associated with said member for imparting a detecting movementto said bar when the member is moved in one direction, said member being free to continue its movement in said direction independently of the bar upon completion of the detecting movement of the latter and being adapted to restrain the bar against reverse movement during said continued movement.

12'. In awarp stop motion for looms and in combination with the heddle frame and its shed'forming heddles, a detector bar having a rocking detecting movement in said frame, a member supported by the frame, cam means on said memberand a cooperating follower connected with said bar, whereby the latter has imparted thereto a rocking detecting movement in one direction upon movement of movementin one direction upon movement of said member, said member being free to continue its movement upon completion of the rocking movement of said bar and independently. of the latter while restraining the baragainstreverse movement, and means for imparting a reverse movement to. the bar and said member.

Ala. Ina warp stop motion for looms and in combination with the heddle frame and its shed forming heddles,a detector bar having a rocking detecting movement in said frame, a member supported by theframe, cam means on said member, a cooperating follower connected with said bar, whereby the latter has imparted thereto a rocking detecting movement in one direction upon movement of said member, said member being free to continueits movement upon completion of the rocking movement of said bar and independently of the latter while restraining the bar against reverse movement, and means for moving said member and bar in a reverse direction.

15. In a warp stop motion for looms and in combination with the heddle frame and its shed forming heddles, a detector, bar havingla detecting movement in said frame, a bracket carried by said frame, a member saidmember, said member being free to conthereto, said member being free to continue its movement independently of the bar upon completion of the detecting movement of the bar.

16. In a warp stop motion for looms and in combination with the heddle frame and its shed forming heddles, detector bar having a detecting movement in said frame, a bracket carried by said frame, amember slid-able in said bracket, an inclined track on said member, a pin carried by said bar and disposed to follow said track, whereby upon movement of the member the bar has a rocking detecting movement imparted thereto, said member being free to continue its movement independently of the bar upon completion of the detecting"movement of the bar and being adapted to hold the bar in detecting position during such continued movement, and means for actuating said member as theheddle frame moves.

17. In a warp stop motion for looms and in combination with the lay, heddle frame and its shed forming heddles, a contact device adjacent the frame and lay, a detector bar in the heddle frame adapted to have imparted thereto a detecting movement, said Iontact device comprising a supporting bracket, a pin on said bracket disposed substantially horizontally, a member slidable on said pin away from the lay and spring means for yieldingly restraining said member against horizontal sliding movement on the pin.

18. In a warp stop motion for looms and in combination with the heddle frame and its shed forming heddles, detecting means on the heddle frame adapted to have a detecting movement and means for causing said detecting movement comprising a bracket, a shaft carried by said bracket, an arm on said shaft, a contact element carried by said arm and adapted to be engaged as the heddle frame moves to impart a detecting movement to said detecting means, and means for moving said shaft whereby to raise and lowor said contact element, said shaft rocking means comprising an arm connected with said shaft and a cam for moving said arm.

19. In a warp stop motion for looms and in combination with the heddle frame and its shed forming heddles, detecting means on the heddle frame adapted to have a detecting movement and means for causing said detecting movement comprising a bracket, a shaft carried by said bracket. an arm on said shaft, a contact element carried by said arm and adapted to be engaged as the heddle frame moves to impart a detecting movement to said detecting means, and means for rocking said shaft whereby to raise and lower said contact element, said shaft rocking means comprising an arm connected with said shaft and a cam for moving said arm.

20. Inca Warp stop motion for looms, a

heddle frame, a detector bar having a plurality of heddles associated therewith and having a detecting movement in said frame, means movable with the frame and movable thereon for imparting a detecting movement to the bar as the heddle frame moves, said means lncludlng a finger, a contact member engageable by said finger as the heddle frame moves in one direction to stop the loom but being engageable by the finger only when i the detector bar is locked in detecting position, a heddle and a contact member engageable asthe heddle frame moves in another direction to rock said detector bar to detecting position and to actuate said finger, Y

our hand.

HARRY E. KHOURY. JQSEPH Gr. MENZER,

Images