US1925051A - Warp stop motion - Google Patents

Description

Aug. 29, 1933. KASPER 1,925,051

WARP STOP MOTION Filed March 30, 1932 4 Sheets-Sheet l \o 7? 5 Fgji.

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Aug. 29, 1933. KASPER 1,925,051

WARP STOP MOTION Filed March 30, 1932 4 Sheets-Sheet 2 Aug. 29, 1933.

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Aug. 29, 1933. K s 1,925,051

WARP STOP MOTION Filed March 30, 1932 4 Sheets-Sheet 4 QZWW Patented Aug. 29, 1933 UNITED STATES WARP STOP MOTION Louis Kasper, Philadelphia, Pa.,

Steel Heddle Manufacturing Company, delphia, Pa., a corporation of assignor to Phila- Pennsylvania Application March so, 1932. Serial No. 601,903 '17 Claims. (01.139-364) My invention relates to warp stop motions for looms, that is to say, to mechanism for automatically stopping the loom in the event of one of the warp ends becoming broken or unduly slack.

My invention more particularly relates to that type of warp stop motion in which the shed forming heddles are used as part of the detector mechanism.

The principal object of my present invention is to provide a warp stop motion of the type aforesaid, which will be simple and efficient, which will be certain in its action, and. which will require a minimum of attention on the part of the operator of the loom.

A further object of my invention is to provide a warp stop motion of the type aforesaid, in which wear and destruction of the delicate parts will be reduced to a minimum, thereby insuring durability of the device.

A further object of my invention is to provide a warp stop motion of the type aforesaid, which may be readily adjusted with respect tothe limit positions of the harness frames.

With the foregoing objects in View, my invention contemplates, in its preferred embodiment, the provision of a detector bar mounted in the harness frame and extending through slots in the heddles; a slide member for imparting the detecting movement to the detector bar; a rod carried by the harness frame and adapted to control the knock-off mechanism which brings the loom to a stop; means forimparting frictional drag to said rod for the purpose of actuating the slide member as the harness frame rises and falls, thereby to actuate the detector mechanism; and means for locking the rod to the harness frame in an extended position when the detecting movement of the detector bar is arrested by a dropped heddle, thereby to bring the knock-off mechanism into operation.

The nature and characteristic features of my present invention will be more readily understood from the following description, taken in connection with the accompanying drawings forming part hereof, in which:

Figure 1 is a front elevation of mechanism embodying the main features of my present inven tion, a single harness frame being shown for clarity of illustration;

Fig. 2 is a side elevation thereof, four harness frames being shown, and a portion of the lay being shown in section;

Fig. 3 is a fragmentary elevation, enlarged, illustrating a portion of a harness frame, the detector mechanism mounted therein, and certain of the parts associated therewith, the same being shown with the parts in the positions assumed when the frame is in the lowermost position;

Fig. 4 is a view similar to Fig. 3, certain por- 00 tions, however, being shown in section, and the parts being shown in the positions assumed when the frame is in its uppermost position, and when the loom is properly functioning, with no broken or slack warp ends;

Fig. 5 is a view similar to Fig. 3, but with the parts in the positions assumed when one of the warp ends. is broken or unduly slack, and the detector mechanism is brought into operation for the purpose of bringing the loom to a stop;

Fig. 6 is a section taken approximately on the line 6-6 of Fig. 3; i

Fig. '7 is a section taken approximately on theline '77 of Fig. 4;

Fig. 8 is an enlargedcross-sectional view of the upper portion of the harness frame, illustrating the relative arrangement of the detector bar and the upper end of the heddle, the parts being shown in the position assumed when the-harness frame 1s in its lowermost position, and the heddle being shown raised by the tension of the warp and controlled thereby;

Fig.- 9 is a view similar to Fig. 8, but with the parts shown in the positions assumed when the harness frame is in its uppermost position;

Fig. 10 is a view similar to Fig. 8, but with the parts shown in the positions assumed when the detector bar is locked against movement by one of the heddles, by reason of the warp end con-' trolled thereby being broken or unduly slack;

Fig. 11 is a View similar to a portion of Fig. 1, but with the parts shown inthe positions assumed when the detector bar is locked against movement by one of the heddles, and the actuator rod is locked to the harness frame in an extended position; 7

Fig. 12 is an underneath plan view of a rock able member, constituting a portion of the mechanism shown in Fig. l; I

Fig. 13 is a fragmentary sectional view, enlarged, of a portion of the mechanism illustrated in Fig. i l, for imparting frictional drag to the actuator rod, thereby to operate the detector mechanism and to cause said rod to be locked to the harness frame in an extended position when movement of the detector bar is arrested; 7

Fig. 14 is a perspective view of the friction 'device, detached;

Fig. 15 is a top or plan view of means for supporting the devices for imparting frictional drag j at the .of support for the top ends of the to the rods mounted on the harness frames; and

Fig. 16 is a perspective view of one of the sup porting brackets, detached, formin part of the structure shown in Fig. 15.

It will, of course, be understood that the description and drawings herein contained are illustrative merely, and that various changes and modifications may be made in the structure disclosed without departing from the spirit of the invention.

Referring to the drawings, each of the harness frames there shown comprises top and bottom rails, 20 and 21, respectively, connected at their ends by metal struts 22 and 23. Each of the end struts shown comprises two strips of metal, having their ends bent over and secured respectively to the inner and outer edges of the top and bottom rails at the ends thereof. Of course, any other preferred construction of harness frame may be used if desired.

Journaled in the end struts 22 and 23 of the harness frame, preferably near the top rail 20, is a detector bar 24, which also serves as a means heddles 25. The lower ends of the heddles are mounted on a bar 25, the ends of which are supported in the end struts 22 and 23 of'the harness frame.

The heddles 25 are made of thin, flat metal, each having a central eye 27, through which the warp 28 extends. Each heddle is also provided at the top and bottom with elongated slots, for the purpose of mounting the same in the frame. The detector bar 24 extends throughthe slot 29 upper end of the heddle. By the foregoing arrangement, the heddles 25 are permitted a limited range of vertical movement with respect to the supporting bars 24 and 26 when the shedding takes place.

A portion as at the upper end of the slot 29 of each heddle is of less width than the main portion ofsaid slot. The detector bar 24 is of noncircular cross-section, being preferably made of a round bar having one side flatted, so that the distance from the fiat side to the diametrically opposite point on said bar is substantially equal to the width of the reduced portion 30 of the top slot 29 of the heddle.

Fixedly secured on the end of the detector bar 24 is a short lever member 31, carrying a protions and 36 of jecting pin 32 at the outer end thereof. The pin 32 extends into a cam slot 33 (see Figs. 6 and 7 in a slide member 34. The slide member 34 has a limited range of vertical movement with respect to the-axis of the detector bar 24.

The slide member 34 is provided at its top and bottom ends with outwardly extending projections 35 and 36, respectively, by means of which said slide member is mounted upon a tube 37. The tube 37 is guided in projecting arm portions 51 and 52 of upper and lower bracket members 53 and 54, respectively, which are mounted on the outer face of the side strut 22 of the harness frame. 7

The slide member 34, while permitted a certain range of vertical movement with respect to the tube 37 upon which it is mounted, normally moves in unison therewith, by reason of the frictional engagement between said tube and a leaf spring 38, the ends of which are mounted in theprojecthe slide member 34. The degree of frictional engagement between the leaf spring 38 and the tube 37 is such that when relative movement takes place between the tube 37 and the harnessframe, the slide member 34 will be constrained to move iii-unison with the tube frame, for a purpose to be 37, and thereby operate the detector bar 24, by reason of the engagement of the pin 32 and the cam slot 33.

A rod 39 extends through the tube 37, and is adjustably secured thereto by 1 means oi a se screw 45, which is mounted in a collar 41 carried at the upper end of said tube. The rod 39 extends upwardly, above the top edge of the harness presently explained. A bracket member 42 is clamped to the tube 37, below the lower end of the slide member 34, and carries a latch or dog 43, which is pivotally secured thereto by means of a pin 44.

The side strut 22 is provided with a recess 45, which is adapted to be engaged by the latch in the manner and for the purpose to be presently explained, whenever the detector 24 is locked against movement by the narrow portion 30 of the slot 29 of a heddle engaging the detector bar 24 by reason of a warp end being broken or unduly slack, it being understood that said heddle will dropto the locking position when the warp end fails to raise the same as the harness frame descends to its lowermost position.

In order to impel the latch member 43 to its position in engagement with the recess 45 in the side strut 22, said latch member is provided with a shoulder 45, which is adapted to engage the lower end of the slot 47 in the slide member 34, (see Fig. 5), the action occurring wheneverrelative movement occurs between the slide member 34 andthe tube 37 upon which the bracket 42, which carries the latch 43, is fixedly mounted.

For the purpose of automatically resetting the latch member 43 to its normal position, the upper end of said latch member is provided with an inclined surface 48, and a complementally shaped surface 49 is provided by means of a struck up portion 50 formedfrom the metal of the slide member 34 which is removed by the slot 47.

The struck up portion 50 of the slide member 34 extends into a slot in the lower bracket mem-' ber 54, in w rich the tube 37 is guided, thereby preventing rotation of the slide member 34 about the axis of the tube 37, and maintaining the proper relationship of the cam slot 33 in the slide member 34 with respect to the axis of the detector bar 24. The latch 43 also extends into the slot 55 in the lower bracket member 54, and extends therethrough whenever the latch member 43 is in engagement with the recess 45 in the side strut 22.

It will, of course, be understood that the slide member 34, and the bracket member 42 in which the latch 43 is pivoted, may, if desired, be mounted directly on the rod 39; but, by the provision of the tube 37, the rod 39 may be readily adjusted with respect to th several parts associated therewith, and may even be entirely removed without disturbing the relationship of said parts with respect to the detector bar, so that no readjustment of the same will be required when the rod 39 is adjusted or replaced.

A frictional drag is imparted to the rod 39, for the purpose of actuating the slide member 34 and the parts associated therewith in the manner and for the purpose to be presently explained. The preferred means for imparting the frictional drag to the rod 39 comprises the provision for each'of said rods of a pair of plate members 60, made of vulcanized fiber or other suitable material, and each having an aperture 91 through which the rod 39 extends.

I A wire spring 61 serves to hold the plate members in association with each other, but normally tends to spread the apertured portions with respect to each other, thus causing the opposite sides of the respective apertures to bear against the surface of the rod 39 in a'more or less constant frictional engagement.

Each pair of frictional plate members 60 is supported in an individual bracket 62, which in turn is adjustably mounted on a horizontal bar 63. Each of the brackets 62 is provided with four arms 64, two pairs of arms in separated horizontal planes, and two pairs of arms in separated vertical planes.

The plate members 60 are disposed between the upper and lower pairs of arms 64, thereby restraining the same against vertical movement. The rod 39 extends between the two pairs of arms in the vertical plane, thereby preventing sidewise mo nent of the frictional plate members 60. arms of the bracket member 62, therefore, serve to position the frictional plate members 60, and also serve to guide the actuator rod 39.

The horizontal bar 63, upon which the bracket members 62 are mounted, is secured at its ends to a bracket member 65, which is clamped by means of a bolt 66 to a bracket 67, which in turn is secured to any suitable stationary portion of the loom (not shown).

The bracket 55 also serves as a means for supporting a vertical rod '70, at the upper end of which a rockable member '71 is pivotally mounted. The front end of the rockable member '71 has a plate portion '72 adapted at certain times to be engaged upon its under face by the upper ends of the rods 39. The under face of the plate portion '72 of the rockable member '71 is longitudinally grooved, as at '73, so as to prevent the upper ends of the rods 39 from sliding out of engagemerit therewith when the rockable member 71 is actuated by one of the rods 39.

A coil spring '74 normally tends to depress the 1 front end of the rockable member 71 upon which the plate portion '72 is mounted. The rear end of the rcckable member '71 is provided with an apertured portion '75, through which a rod '73 extends. A collar '77 is mounted on the upper end of the rod '75, and secured thereto by means of a set screw '78. The lower end of the rod '76 is connected to one end of a bar '79. The other end of the bar '79 is adjustably mounted in a bracket 89, which is pivotally connected by means of a bolt 31 to one arm 82 of a bell crank lever.

The other arm 83 of the bell crank lever is adapted to engage and knock off the shipper lever 84 of the loom whenever the bar '79 is actuated.

For the purpose of actuating the bar '79, when the same is permitted to drop by the depression of the rod or wire '76, the bar '79 has adjustably mounted thereon a bracket 85. The lay 86 is also provided with a bracket member 8'7, having a lug 88 to encounter the bracket 85 whenever the bar '79 is lowered by the depression of the rod or wire '76.

The operation of the mechanism above described now be explained. The harness frames are raised and lowered in the customary manner, by means of any preferred type of shedding mechanism. In Fig. 1 of the drawthe particular harness frame illustrated is shown in the elevated position, and the parts associated therewith are in their proper respective positions assumed when the harness frame is elevated and the loom is functioning normally, that is to say, with all of the warp ends controlled by the frame unbroken and properly tensioned.

When the parts are in the positions shown in Fig. 1 of the drawings, the detector bar 24 will be in the position shown in Fig. 9, and the heddles will be supported at their upper ends by means of the shoulders provided by the narrow portions of the slots 29 in the heddles resting upon the curved surface of the detector bar 24. Those portions of the mechanism which are immediately connected to the harness frame will, when the harness frame is in its uppermost position, be in the positions shown in Fig. 4 of the draw lngs.

As the harness frame descends, the vertical rod 39 will be retarded in its movement by reason of the frictional engagement therewith of the fixedly positioned frictional device comprising the apertured plate members through which the rod 39 extends. The slide member 34 will thus, at the beginning of the downward movement of the harness'frame, be held stationary.

As the pin 32, carried by the lever 31 at the end of the detector bar 24, travels through the cam slot 33 in the slide member 34, the detector bar 24 will thereby be moved to the position shown in Fig. 8 of the drawings. When the pin 32 reaches the lower end of the cam slot 33, the downward movement of the harness framewill be imparted to the vertical rod 39, andthereafter said rod will be dragged through the frictional device until the harness frame reaches its lowermost position, the detector bar 24 meanwhile remaining in the position shown in Fig. 8 of the drawings.

At this stage of the operation, by reason of the tension of the warp 28 being imparted to the heddles during the formation of the shed, the heddles will be raised to the position shown in Fig. 8 of the drawings. Assuming that the loom is working properly, and that none of the warp ends is broken or unduly slack, as the harness frame starts on its upward movement the vertical rod 39 will again be retarded against movement by the frictional device. The lower end of the slide member 34 normally rests upon the bracket 42 which is clamped to the tube 3'7, which in turn is secured to the rod 39, so that when the harness frame ascends the pin 32, carried by the lever 31 at the end of the detector bar 24, will again travel through the cam slot 33 in the slide member 34 until it reaches the upper end of said slot.

It should here be noted that, by reason of the frictional engagement of the leaf spring 38, which is carried by the slide member 34, with the tube 3'7, this action as above described will normally be permitted and brought about. It should also be noted that, so long as there is no relative shift of the slide member 34 with respect to the bracket 42 which is clamped to the tube 3'7, the latch 43 will travel freely in the slot 55 in the bracket the same will drop, when the harness frame is in its lowermost position, and will lock the detector bar 24 against return to itsinitial position (see Fig. 10) Whenthe detector bar 24 is thus locked, the slide member 34 will be restrained against movement with respect to the harness frame, i

whereupon, as the harness frame starts to rise from its lowermost position, the latch 43 will, by reason of the relative movement between the slide member 34 and the bracket 42 in which the latch 43 is pivoted, cause the shoulder 46 of the latch 43 to engage the lower portion of the slot s7 in the slide member 34, thereby constraining the latch 43 to extend into the recess 45, and locking the actuator rod 39 with respect to the harness frame (see Fig. 5).

When the actuator rod 39 is thus locked to the harness frame, the upper end of said actuator rod will, as the harness frame approaches its uppermost position, engage the under surface of the plate portion '72 of the rockable member 71 (see 11), thus permitting the rod or Wire 76 to drop. As the rod or Wire 76 falls, the bracket carried by the bar '79 will drop into the path of the lug 88 carried by the bracket 87 which is secured to the lay 86.

As the lay continues in its movement, the bar '79 will be shifted and will, through the intermediary of the bracket 80, cause the arm 83 of the bell crank lever to knock off the shipper lever 84, thus bringing the loom to a stop. I

I claim:

1. In a warp stop motion for looms, a harness frame; shed forming heddles mounted therein;

etector mechanism in the frame controlled by said heddles; an actuator rod mounted at th end of the frame adapted to operate the detector mechanism; fixedly located means for imparting a frictional drag to said actuator rod; means con-- trolled by the detector mechanism for connecting the rod to t-e harness frame, thereby to impart movement to the rod in addition to its normal movement; and means controlled by said rod for stopping the loom.

2. In a warp stop motion for looms, a harness frame; shed forming heddles mounted therein; a detector bar mounted in the frame, the movement of which may be arrest d by a dropped heddle; an actuator rod mounted at the end of the frame adapted to impart a detecting movement to the detector bar; fixedly located means for imparting a frictional drag to said actuator rod; means controlled by the detector bar for connecting the rod to the harness frame, thereby to impart movement to the rod in addition to its normal movement; and means controlled by said rod for stopping the loom.

3. In a warp stop motion for looms, a harness frame; shed forming heddles mounted therein; a detector bar mounted in the frame, the movement of which may be arrested by a dropped heddle; an actuator rod mounted at the end of the frame adapted to impart a detecting movement to the detector bar; fixedly located means for imparting a frictional drag to said actuator rod; means controlled by the detector bar but otherwise independent thereof for connecting the rod to the harness frame, thereby to impart movement to the rod in addition to its normal movement; and means controlled by said rod for stopping the loom.

- 4. In a warp stop motion for looms, a harness frame; shed forming heddles mounted therein; a detector bar mounted in the frame, the movement of which may be arrested by a dropped heddle; a slide member mounted at one endof the harness frame, said slide member having a cam slot; an off-center pin carried at the end of the detector'bar engaging the cam slot in the slide member, whereby the detecting movement of the bar will be imparted thereto by the movement of the slide member, and whereby the slide member will be restrained against complete movement when the movement of the detector bar is arrested; an actuator rod mounted at the end of the harness frame having a limited range of moveed in the ment with respect thereto; fixedly located means for imparting a frictional drag to said actuator rod; means controlled by the slide member for imparting movement to the rod in addition to its normal movement; and means controlled by the rod for stopping the loom.

5. In a warp stop motion for looms, a harness frame; shed forming heddles mounted therein; a detector bar mounted in the frame, the movement of which may be arrested by a dropped heddle; a slide member mounted at one end of the harness frame; said slide member being 0peratively connected to the detector bar, whereby the detecting movement of the bar will be imparted thereto by the movement of the slide member, and whereby the slide member will be restrained against complete movement when the movement of the eector bar is arrested; an ac tuator rod mounted at the end of the harness frame having a limited range of movement with respect thereto; fixedly located means for imparting a frictional drag to said actuator rod; a latch carried by'the rod; means carried by the slide member for causing said latch to engage a portion of the harness frame when the slide member is restrained against complete movement with respect to the frame, thereby to impart movement to the rod in addition to its normal movement; and means controlled by the rod for stopping the loom.

8. In a warp stopmotion for looms, a harness forming heddles mounted therein; detector bar mounted in the frame, the movement of which may be arrested by a dropped heddle; a tube mounted at the end of the harness frame; means associated with said tube adapted to impart a detecting movement to the detector bar; means controlled by the detector bar for connecting the tube to the harness frame, thereby to movement to the tube in addition to its normal movement; a rod adjustably mounted in the tube; and means controlled by said rod for stopping the loom.

7. In a warp stop motion for looms, a harness frame; shed forming heddles mounted therein; a detector bar mounted in the frame, the movement of which may be arrested by a dropped heddle; a tube mounted at the end of the harness rains; means associated with said tube adapted o impart a detecting movement to the detector bar; means controlled. by the detector bar for con; ecting the tube to the harness frame, thereby to impart movement tothe tube in addition to its normal movement; a rod adjustably mounttube; means for imparting a frictional -rag to said rod; and means controlled by said rod for stopping the loom.

In a warp stop motion for looms, a harness frame; shed forming heddles mounted therein; a detector bar mounted in the frame, the movement of which may be arrest-ed by a dropped heddle; a slide member mounted at one end of the harness frame, said slide member being operatively connected to the detector bar, whereby the detecting movement of the bar will be imparted thereto bythe movement of the slide member, and whereby the slide will be restrained against complete movement when the movement of the detector is arrested; a tube mounted at the of the harness frame'having'a limited range of movement with respect thereto; a latch carried by said tube; carried by the slide member for caus ng said latch to engage a portion of the harness frame when the slide member is restrained against complete movement with re-- 1 r: a limited range of movement with respect therespect to the frame, thereby to impart movement to the tube in addition to its normal movement; an actuator rod adjustably mounted in the tube; means for imparting a frictional drag to said actuator rod; and means controlled by the rod for stopping the loom. v

9.'In a warp stop motion for looms, a harness frame; shed forming heddles mounted therein; a detector bar mounted in the frame, the movement of which may be arrested by a dropped heddle; a slide member mounted at one end of the harness frame, said slide member .being operatively connected to the detector bar, whereby the detecting movement pf the bar will be imarted thereto by the movement of the slide member, and whereby the slide member will be restrained against complete movement when the movement of the detector bar is arrested; a tube mounted at the end of the harness frame having a limited range of movement with respect thereto; a bracket secured to said tube; a latch pivotally mounted in said. bracket; means carried by he slide member for causing said latch to ene a portion of the harness frame when the L e member is restrained against complete movement with respect to the frame, thereby to impart movement to the tube in addition to its normal movement; an actuator rod adjustably mounted in the tube; means for imparting a frictional drag to said actuator red; and means controlled by the rod for stopping the loom.

10. In a warp stop motion for looms, a harness frame; shed forming heddles mounted therein; a detector bar mounted in the frame, the move m it of which may be arrested bya dropped he dle; a slide member mounted at one end of the harness frame, said slide member having a cam slot; an off-center pin carried at the end of the detector bar engaging the cam slot'in the slide member, whereby the detecting movement of the bar will be imparted thereto by the movement of the slide member, and whereby the slide r will be restrained against complete the harness frame having a limited range of movement with respect thereto; a bracket secured to said tube; a latch pivotally mounted in said bracket; means carried by the slide memo to the tube in addition to its normal movement; an actuator rod adjustably mounted in the tube;

means for imparting a frictional drag to said actuator rod; and means controlled by the rod for stopping the loom.

11. In a warp stop motion for looms, a harness frame; shed forming heddles mounted therein; detector mechanism controlled by said heddles and including a slide member mounted at one end of the harness frame; an actuator rod mounted at the end of the harness frame having to; frictional means for causing the slide member normally to move in unison with said actuator rod; means controlled by the slide member for connecting the rod to the harness frame, thereby to impart movement to the rod in addition to its normal movement; means for imparting a frictional drag to said actuator rod; and means controlled by the rod for stopping the loom.

12. In a warp stop motion for looms, a harness frame; shed forming heddles mounted therein; a

ent when the movement of the detector bar is arrested; a tube mounted at the end of detector bar mounted inthe frame, the movement of which may be arrested by a dropped heddle; a slide member mounted at one end of the harness frame, said slide member being operatively connected to the detector bar, whereby the detecting movement of the bar will be imparted thereto by the movement of the slide member, and whereby the slide member will be restrained against complete movement when the movement of the detector bar is arrested; an actuator rod mounted at the end of the harness frame having a limited range of 'movement with respect thereto; frictional means for causing the slide member now really to move in unison with said actuator rod; means controlled by the slide member for connesting the rod to the harness frame, thereby to impart movemeht to the rod in addition to its normal movement; means for imparting a frictional drag to said actuator rod; and means controlled by the rod for stopping the loom.

13. In a Warp stop motion for looms, a harness frame; shed forming heddles mounted therein; a detector bar mounted in the frame, the movement of which may be arrested by a dropped heddle; a slide member mounted at one end of the harness frame, said slide member being opera tively connected to the detector bar, whereby the detecting movement of the bar will be imparted thereto by the movement of the slide member, and whereby the slide member will be restrained against complete movement when the 'movement of the detector bar is arrested; an

actuator rod mounted at the end of the harness frame having a limited range of movement with respect thereto; frictional'means for causing the slide member normally to move in unison with said actuator rod; a bracket secured to the actuato'r rod; a latch pivotally mounted in said bracket; means carried by the slide member for causing said latch to engagev a portion of the harness' frame when the slide member'is restrained against complete movement withrespect to the frame, thereby to impart movement to the rod in addition to its normal movement; means for imparting a frictional drag to said actuator rod; and meansicontrolled by the rod for stopping the loom. I

14. In a warp stop motion for looms, a harness frame; shed forming heddles mounted therein; a detector bar mounted in the frame, the move ment of which may be arrested by a dropped heddle; a slide member mounted at one end of the harness frame; said slide member having a cam slot; an off-center pin carried at the end of the detector bar engaging the cam slot in the slide member, whereby the detecting movement of the bar will be imparted thereto by the movement of the slide member, and whereby the slide member will be restrained against complete movement when the movement of the detector bar is arrested; an actuator rod mounted at the end of the harness frame having 'a limited range of movement with respect thereto; frictional means for causing the slide member nor mally to move in unison with said actuator rod; a bracket secured to the actuator rod; a latch pivotally mounted in said bracket; means carried by the slide member for causing said latch to engage a portion of the harness frame when the slide member is restrained against complete movement with respect to the frame, thereby to impart movement to the rod in addition to its normal movement; means for imparting a frictional drag to said actuator rod; and means controlled by the rodfor stopping the loom.

n 15. In a warp stop motion for looms, a harness frame; shed forming heddles mounted therein; a detector bar mounted in the frame, the movement of which may be arrested by a dropped heddle; a slide member mounted at one end of the harness frame, said slide member being op eratively connected to the detector bar, whereby the detecting movement of the bar will be im-' parted thereto by the movement of the slide member, and whereby the slide member will be restrained against complete movement when the movement of the detector bar is arrested; a tube mounted at the end of the harness frame having a limited range of movement with respect thereto; frictional means for causing the slide member normally to move in unison with said tube; a latch carried by said tube; means carried by the slide member for causing said latch to engage a portion of the harness frame when the slide member is restrained against complete movement with respect'to the frame, thereby to impart movement to the tube in addition to its normal movement; an actuator rod adjustably mounted in the tube; means for imparting a frictional drag to said actuator rod; and means controlled by the rod for stopping the loom.

16. In a warp stop motion for looms, a harness frame; shed forming heddles mounted therein; a detector bar mounted in theframe, the move- 'ment of which may be arrested by a dropped heddle; a slide member mounted at one end of the harness frame, said slide member being operatively connected to the detector bar, whereby the detecting movement of the bar will be imparted thereto by the movement of the slide member, and whereby the siide member Willbe restrained againstcomplete movement when the movement of the detector bar is arrested; a tube mounted at the end of the harness frame having ;a limited range of movement with respect thereto; frictional means for causing the slide member normally to move in unison with said tube; a bracket secured to the tube; a latch pivotally mounted in said bracket; means carried by the slide member'for causing said latch to engage a portion of the harness frame when the slide member is restrained against complete movement with respect to the frame, thereby to impart movement to the tube in addition to its normal movement; an actuator rod adjustably mounted in the tube; means for imparting a frictional drag to said actuator rod; and means controlled by the rod for stopping the loom.

1?. In awarp stop motion for looms, a harness frame; shed forming heddles mounted therein; a detector bar mountedin the frame, the movement of which may be arrestedby a dropped heddle; a slide member mounted at one end of the harness frame, said slide, member having a cam slot; an off-center pin carried at the end of the detector bar engaging the cam slot in the slide member, whereby the detecting movement of the'bar will be imparted thereto by the move ment of the slide member, and whereby the slide member will be restrained against complete movement when the movement of the detector bar is arrested; a tube mounted at the end of the harness frame having a limited range of movement with respect thereto; frictional means for causing the slide member normally to move in unison with said tube; a bracket secured to the tube; a latch pivotally mounted in said bracket; means carried by the slide member for causing said latch to engage a portion of the harness frame when the slide member is restrained against complete movement with respect to the frame, thereby to impart movement to the tube in addition to its normal movement; an actuator rod adjustably mounted in the tube; means for imparting a frictional drag to said actuator rod; and means controlled by the rod for stopping the loom.

LOUIS KASPER.

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