US2657451A

US2657451A - Stop motion device for strand manipulating apparatus

Info

Publication number: US2657451A
Application number: US180944A
Authority: US
Inventors: Raymond E Solliday; Samuel A Steere
Original assignee: Wingfoot Corp
Current assignee: Wingfoot Corp
Priority date: 1950-08-23
Filing date: 1950-08-23
Publication date: 1953-11-03
Anticipated expiration: 1970-11-03

Description

Nov. 3, 1953 R. E. SOLLIDAY ET AL STOP MOTION DEVICE FOR STRAND MANIPULATING APPARATUS 4 Sheets-Sheet 1 Filed Aug. 25, 1950 RAYMOND E. SOLLIDAY SAMUEL A STEERE FIG. 2

;TORNEY Nov. 3, 1953 'R. E. SOLLIDAY ET AL STOP MOTION DEVICE FOR STRAND MANIPULATING APPARATUS 4 Sheets-Sheet 2 Filed Aug. 23, 1950 RAYMOND E. SOLLIDAIY. SAMUEL A. STEERE FIG. 3

ATTOR N EY Nov. 3, 1953 R. E. SOLLIDAY ET AL 2,657,451

STOP MOTION DEVICE FOR STRAND MANIPULATING APPARATUS Filed Aug. 25, 1950 4 Sheets-Sheet 3 gwucwvfm FIG. 4 RAYMOND E. SOLLIDAY SAMUEL A. S TEERE 4 ATTORNEY Nov. 3, 1953 R. E. SOLLIDAY ET AL 2,657,451

STOP MOTION DEVICE FOR STRAND MANIPULATING APPARATUS Filed Aug. 23, 1950 A 4 Sheets-Sheet 4 INVENTORS FIG. l2 RAYMOND E. SOLLIDAY BY SAMUEL A. STEERE ATTORNEY ii e li s- 1 f wj ai .41 aw it.

Patented Nov. 3, 1953 .s'roPv MOTION DEVICE FOR STRAND NIBULATING' APPARATUS Raymond E. Solliday and Samuel A. Steere,

Akron, Ohio, 'assignqrs to Wihgfoot Corporation nkro'n, a, corporation pffnelawar e nn q e is 23, 1,950 ssr a p o- .f

14 Qlaims.

The; present invention .relates ,to a v novel form v of stop-motion device for use vin,apparatus for i the manipulation of, .o'rd, thread, andiother simi- 1 ;v filamentous material of substantiallyucontinuous lengths. ,l/loreparticularly, the;invention pertains to a means 'for. instantlystoppi l' I cord winding ortreating ignzfi chinery in which the "cord being treated is temporarily stored in m ndicate pattern or s ries 1 windings' whi'ch itlwould ,be necessary to-r reinthe fevent of cord breakage or a supply ail u're unless the operation of :theapparatus ;is- ;-guicl ly arrested.

ltis anobjectof the present invention to provide a form of to motion W hic h is actuated bythe cor a -i ea sihesupp r u t ontrol the arresting of he cord pr sing apparatuswhenever the; s pply ortheco'rd '.breaks.

It is anothen object of the pr esentv invention to out delay toarrestthe, operation of the cord prp c- \essing ap ara us-th re y; in fi iag i iina h ze hdrawa iih o d ir m the apparatus to an ext ent such that piarti'al'f re- ,glthreading ofithe apparatus becomes necessary.

Other obj ects and advantages will become, apren as, e ai -i i mi l @9 1 i 0f device embodying the principles of the present .invention proceeds.

, l flt c m anyin d ravvipis,.-F g. 1 repr .:sent s an end elevation of a cord treatin ap1 }),aragtus with parts in section and broken away. Fig. I 2 is a partial plan view at an enlarged s'cale :ofa portionoithe apparatusoi Fig. 1 with parts removed and hroken away for the sake of tcle ara .ness. Fig. 3 is ;an ..elevation of theportion of the t s.il u ratedin Ei Zshow g t e-stopmotion of the presentinvention in operating relation to h artst e o d reatin a paratu Fig. 4 corresponds generally to Fig. 3,;butisho ws the stopmotion-releas ed. Fig. 5 is an .end v ew' of r, the,apparatus of asseen from the line 5 5 therein with p rtsroken away Fig dis a ver- -ticalsectiontaken along -the lin..16,6 in Fig, 4 with parts ,in,.e1e.vation. Fig; 7' is .an. nlarged viewof oneof therelements ofthe sto H f with parts, broken ,away. Fig. 8 is .anoenlarged .acut-away vi w f he. w ndi g P0 1 pn,whi,ch .the .finished cord is collected.

i 9 l ra e anoth r fo m (ri stop-motion embodying thefeatures of the-presen inve tion and. corresponds generally to: the devicedo Big. v3 h r s. brq s az w jq elevation of the device of l 'ig... Q asiseen rom the apparatus shown in Fig. 9,from the line I I- ll therein. Fig. 12 is an enlarged plan View of the stop-motion of Fig. '9 corresponding generally to Figi ll, but with the parts thereof in their'respective' positions assumed when the cord'processing operation is halted.

In Fig. l of the drawings, the reference numeral .1 identifie'sfa cord 'treating apparatus generally ,for the'tr'eatment of c'ord, thread, or the like. The cord treating apparatus l comprises a base portion} on which is mounted a vertically extending support structure A plurality of supporting brackets l are mounted on the several support structures'3 so as to carry spindle railifextendin'g in longitudinal re- [lation along the cord treating apparatus I. The spindle railv 5 has a plurality of spindles 6 thereon, each of which serves to, support a supply package (from which an end 3 of cord, thread, or the like is withdrawn for processing treatmentin the cord treating apparatus l. The cord end B, which will ibe referred to hereinafter simply as cord, is directed through a devious path of travel in the course of its treatment. Since this v feature does not constitute the subject matter of thepresent invention, only on such cord path will be described in part, but it should be "understood that the apparatus of the present inlvention has eqtral adaptability to any similar 'form of' path which ay be employed in conducting the cord 8 through the cord treating apparatus I.

Thecord treating apparatus 1 is provided with an 'angle member] 9 extending longitudinally thereof and supported at its ends and at intermediate spaced points by a plurality of supports .lll'jwhich are mounted on the base portion 2.

idlrfrolls "l2, .I3, .14, and.- I5 which are mounted in ireely rotatable relation The .several'idler .rollsserve to provide a means of guiding thcord Ll-both before andaftertreatment.

An extension .lfi isisecured ,to the uppermost end o f the vertical member 'Il ahdprovides a mounting for a "pai'rfof spaced 'pigtail guides f I l and ,I 8. From its path about .the' several grooved "'fidleryrolls I2 tol5;finclu sive, the cord 8 is passed.

lto ajgrooved, guide 1 011,] 9 which directs the cord Q r' ahd. on ct;wi h t es a e of asc roll 20.1, ;1'I:hefScotch roll 20' is ,SI PDOrted'atitS acc /345i 3 ends in such fashion that it is partially immersed in a supply 2| of treating liquor such, for example, as a suitabl adhesive or bonding agent to facilitate the adherence of the cord with rubber or other like plastic material.

The treating liquid 2| is disposed in a trough 22 which is suspended from the base portion 2 of the cord treating apparatus l as by means of the supports 23 secured to the base portion 2. It will be understood that the treating liquid 2 I, by virtue of the fact that the trough 22 extends lengthwise of the cord treating apparatus I, will serve to supply a treating medium for all of the cord treating stations therealong. A wiper 24 supported by the trough 22 is disposed in contact with the cord 8 after it leaves the Scotch roll for the purpose of removing from the cord any excess treating liquor to prevent contamination of the several parts of the apparatus.

The cord 8, after the application of the treating liquor 21 is completed, is again guided over one or more of the grooved idler rolls l2, i3, is, and [5, after which it is directed to a series of cord manipulating devices identified generally in a Fig. 1 by the reference character 25. The cord manipulating devices 25 may include suitable idler guide rolls, a stretching cone, a heated flared drum, and a suitable driving mechanism, all of which will be described in greater detail hereinafter.

The cord manipulating devices 25 are advantageously supported on a pivotally mounted means which takes the form of the swinging arm 26. The arm 26 is appropriately mounted upon a longitudinally extending rod 2'! which is supported in fixed relation to the base portion 2 of the cord treating apparatus 1 by a plurality of supports 23. Similar mounting means are provided for each of the several cord treating stations along the cord treating apparatus 1.

The arm 26 provides a support for a pair of

grooved idler rolls

29 and 30 disposed in spaced parallel relation to each other on a stud 3! which is secured to the mounting bracket 32 carried by the arm. Adjacent to the grooved idler rolls 2S and 30 is a heated drying drum 33 of cantilever construction. The drying drum 33 is provided at its supported end with an integrally formed flange 34. An annular rib 35 is formed on the periphery of the drying drum 33 in spaced and generally parallel relation to the flange 34 so as to provide therebetween a generally cylindrical surface 36. Extending outwardly toward the unsupported end of the drying drum 33 is a flared portion 31.

The drying drum 33 is mounted for positive rotation upon a mounting stud 3B which is appropriately secured to the arm 26 and carries a gear 39. A suitable driving means embodying the gear 39 and a meshing gear 38 mounted on the driving shaft 4i extending lengthwise of the cord treating apparatus l serves to rotate the drying drum 33 at a constant predetermined rate. The drying drum 33 is heated as by means of an internally disposed electrical resistance unit (not shown) of conventional design which employs electrical energy supplied through the wires 42 which are connected to a suitable source of electricity. Any other suitable source of heat other than the electrical unit may be employed.

The drying drum 33 operates in conjunction with a stretching cone 43 to provide a predetermined path of travel for the cord 8 which embodies a plurality of spaced, generally helical turns of gradually increasing diameter. The

stretching cone i3 is freely rotatably supported about a mounting stud a l which is, in turn, secured to the arm 26.

From the stretching cone t3, the cord 8 is directed downwardly as indicated in Fig. 1 to a grooved guide vroll to freely rotatably mounted upon a conventional ring rail 46 which is mounted for reciprocation with respect to a spool or bobbin 4'. on which the cord 3 is collected in the form of a package 48. The bobbin Al is supported by a vertical spindle 4i! (see Fig. 8) and is driven by a belt 50 and a pulley 5! in a manner more fully described hereinafter. The spindle as is supported in each case by a stationary spindle rail 52 which is in turn supported by brackets 53 from the base portion 2 of the cord treating apparatus I. i

In order to facilitate the operation of the cord treating apparatus I and to avoid the necessity of restoring the entire path of travel of the cord 8 about the several elements of the apparatus and in particular on the cord manipulating devices 25 thereof, a stop-motion 53 is provided. The stop-notion 54 may take several different forms, but is here illustrated as embodying among other things, a feeler 55 for contacting the cord. The feeler 55 has a bent portion 56 at one end thereof for contact with the cord 3 as it passes between the pigtail guides ll and it in the cord treating apparatus I. At the opposite end of the feeler 55 is disposed a bent portion 51. The feeler 55 is pivotally mounted on a boss portion 53 in the manner illustrated in Figs. 1, 3, and 4 so as to be free to assume a generally vertical position in the event that the cord 8 should break or the supply should run out.

lhe bent portion 5? of the feeler 55 is arranged to engage a slotted opening 59 in the trigger to. The trigger 60 is secured to the slidable rod 6|. The rod 5! is mounted for axial movement in a horizontal plane on the

blocks

62 and 63 mounted upon the angle member 9 and the support 23, respectively. Adjacent the trigger B0 on the slidable rod 6| is disposed a collar B 3 and a compression spring 55 which is disposed in biasing relation between the collar and the block 63 on the support 23 which affords an abutment for the spring.

The trigger 69 is held in vertical position with respect to the slidable rod 6| as by means of a slotted guide member 66 secured to the block '53. The trigger 66 is freely slidable in the slotted opening formed in the guide member 56. The spring is retained in compression between the collar 64 and the block 63 when the feeler 55 is in operating relation and retained by the cord 8 as it passes through the pigtail guides H and I8. The relationship of the several elements herein described is best illustrated in Fig. 3 of the drawings.

The slidable rod 3| is provided at its end adjacent the block 63 with an enlarged end portion 61 providing a shoulder 68 thereon which limits the lateral movement of the slidable rod 6i in its

blocks

62 and 33. The enlarged end portion 6'? has a counterbore E3 in one end thereof as best shown in Fig. 7 of the drawings. This counterbore 69 houses the keeper Hi, the stem portion H of which extends into the counterbore. The stem portion H of the keeper in is inserted in a compression spring H with a pin 33 extending through a slot 74 in the end portion 61, serving to retain the keeper it in place therein against the action of the spring.

When the stop-motion 54 is in operative relaguides I7 and i8.

tion as shown in Fig.3 of the drawings, the face of the keeper Wis 'in' contact with a pin in the 'cam member 16 and serves to retain the latter in the position illustrated as-longas the supply of the cord 8 in the cord treating apparatus l'is uninterrupted. The cam member 16 is advantageously mounted in pivotal relation in a mounting boss F1 on the arm'26 so as to be free to rotate in a vertical'plane when the keeper H1 is moved laterally by the action of the slidable rod 6| in a manner hereinfater to be described.

The cam member 16 is provided with a cam surface 18 and an adjacent portion having a plurality of teeth 19 in the nature of a segmental gear for meshing engagement with the teeth of a gear 80. The gear 80, which is mounted on the longitudinal drive shaft 4|, is disposed closely adjacent to the driving gear 49 mounted thereon. The gear 80 is constructed with a pair of spaced cam surfaces 8| for contact with the cam surface 18 of the cam member 16 after the latter has been rotated through a Vertical plane by the meshing of the teeth 19 with the teeth of the gear 80.

Suitable adjustment features may be provided for the positive location of theswinging arm 25 to insure proper meshing of the teeth of the gear 39 with the driving gear 40 on the shaft 41.

Such adjustment features include a stud bolt 82 which is threaded through an internally threaded hole in the boss portion 83 on the support 28. A similar adjusting stud bolt 84 is threaded into an internally threaded hole in the arm 25 for the purposes of providing an adjustable stop for the cam member 16 when the flat surface 85 thereon is rotated about into contact therewith.

The keeper it is bent at its uppermost portion 86 so as to provide a slight relief for the pin '75 when the cam member 16 has been rotated to its uppermost limit, thereby bringing the flat undersurface 85 thereon into contact with the stud 84 on the arm 26. A handle portion 87 at the' free end of the arm 25 facilitates the manual adjustment of the position of the arm by the operator in the course of operation of the thread manipulating apparatus I.

The cord treating apparatus i, just described, is threaded up by bringing th end of the cord 8 from the supply package I through the pigtail The cord 8 is then directed along a predetermined path over and around a series of grooved idler rolls l2, l3, l4, and

I5 from one of which, in this case the roll 1 3 the cord is advanced to the idler roll 19. The cord 8 is next passed over and in contact with the surface of a Scotch roll which dips into the supply of treating liquor 2|, thence over the wiper 24, and back to the grooved idler rolls I2, [3, Land [5.

The cord 8 now leaves the treatingportion of the cord treatmentapparatus Iv and is directed to the several cord manipulating devices 25. Here the cord 8 is subjected to a predetermined amount of heating and stretching. From this stage of treatment, the cord passes next to the wind-up stage as illustrated in Fig. 1 of the accompanying drawings where the finished and treated cord 8 is collected in the form of a package 48 on a rotatin bobbin 41.

The path of travel of cord 8 described above represents only one of several through which the cord may be manipulated to produce the desired finished product. It will be readily understood that since the path of cards is tor tuous and requires'a considerable expenditure of time and skill on the part of the-operator in threading up the cord treating apparatus 1,- any break in the cord 8 or run-out of the supply package 1 would cause considerable waste and require frequent time "consuming rethreading operations. Such stoppagesultimately result increased costs for the entire cord treating operation.

Of even greater importance is the factthat the let-off, treating, heating and stretching-and wind-up steps shown comprise but one unit of a complete cord treatingapparatus I. The cord treating apparatus I usually contains a battery of from fifty to one hundred such units and any loss of time resulting from rethreading operations or cord wastage would necessarily be multiplied many times in the course of the normal operation of the cord treating apparatus.

It will be noted that the stop-motion 54'has not been rendered operable until the initial threading operation has been completed. Upon completion of the threading operation, the stopmotion 54 is placed in operable relation by shifting the segment of the cord 8 passing between the two pigtail guides H and 18 to one side far enough to permit the bent portion 56 of the feeler 55 to be positioned as shown in Figs. 2 and 3. The cord 8 is then permitted to return to its normal position in contact with'the bent portion 55 of the feeler 55. The feeler 55 remains biased in the position shown until the cord 8 breaks or an end runs out releasing the biasing efiect which it exerts upon the bent portion 56 of the feeler.

It will be understood that asllong as'a driving pull is maintained on the cord 8 by the cord manipulating apparatus 25 and a sufficient .supply of the cord is present in the supply package I, the feeler 55 will be retained in the slightly tilted position illustrated in Fig. 3. As a result of this restrained position of the feeler 55, the rod 6| will be biased in the direction of its longitudinal axis, thereby compressing the spring 65. The keeper it! will contact the pin 15 of the pivoted earn it holding it temporarily in the position shown in Fig. 3.

It will be understood'that .as long as the cord 8 remains unbroken or the supply package '7 does not run out before it can be replaced by the operator with a new package and the cord ends 8 tied together, the stop-motion unit 54 will remain in the position illustrated in"Fig."'3 without affecting the cord path or the treating operations described above. Breakage of the cord seldom occurs, but a supply failure may be quite frequent.

In the event that the cord 8 runs out or breaks anywhere in the thread circuit from the let-off to the-wind-up of the cord treating apparatus l, the restraining action'of the taut cord is instantly removed from the bent poit'ion'BB 'of the feeler '55. Due to'it's counterbalanced suspension, the feeler 55, temporarily biased in'tilted relation, will return to a vertical position. The compression is thus removed fromthe spring 65, and. the rod BI is shifted along its longitudinal axis in the direction indicated by the arrow in Fig. 3, withdrawing the enlarged portion 67 on said rod housing the spring 12, pin 13,stem.portion H, and keeper 10 (see Figs. 4 and '7).

The purpose of the-spring 12 in the assembly shown in Fig. 7 is to insure a smooth operation of the stop-motion-unit 54 when sucha cord breakage or run-out as described above occurs. While the feeler 55 is still restrained by the pressure contact of the cord 8 on the bent portion 56 thereof, both spring 12 and spring 65 are compressed although the release of spring I2 would be opposite to that of the spring 65. Thus, the spring 12 has a tendency to delay or hold back slightly the shiftable movement of the keeper I9 and consequently restrains the movement of the cam member I6 through the contact of the keeper I with the pin I5.

When the compression has been removed from the spring I2 and it has extended to its full length or at least to a point where it is overcome by the weight of the pivoting cam member 16 with the retraction of the rod BI, the cam member swings downwardly in a smooth and steady manner. The teeth 19 of the cam member 16 now engage the teeth of the gear 80. When this occurs, the gear 80 being driven by the shaft 4I rotates the cam member I6 until the cam surfaces 79 thereon contact the cam surfaces of the gear 80. The cam member 15 continues to rotate until it assumes the position shown in Fig. 4.

This rotation of the cam member I6 against the cam surfaces 8| of the gear 80 results in the arm 26 pivoted at 27 being raised to the position shown in Fig. 4. This causes the gear 39 to be disengaged from the gear 40 in the driving shaft 4|, thereby stopping the rotation of the driving drum 33. During the rotation of the cam member 16 the spring I2 again comes into play. When the cam member I6 is in its neutral position, the spring 12 is in its free or uncompressed position. While the cam member 56 is moving toward the position shown in Fig. l, the pin 15 remains in contact with the keeper I0, thereby compressing the spring 72.

When the cam member I6 reaches the uppermost extremity of its path of travel, as shown. spring I2 again releases to enable the bent portion 86 of the keeper 10 to come into contact with the pin I5. The relatively slight pressure exerted by the spring 12 on the keeper I0 tends to assist in holding the cam member 76 in its elevated position until the operator has threaded up the cord treating apparatus I and again reset the stop-motion unit 54 in the manner previously described.

As soon as the gear 39 is disengaged from the gear 40 by the pivoting of the arm 26 about its mounting on the rod 21, the positive feed of the cord 8 from the cord manipulating devices 25 to the bobbin 2'! ceases. The tension induced in the cord 8 by the rotation of the bobbin 4'! in building the package 48 is very slight by reason of the fact that the bobbin is only frictionally driven by the pulley I. This frictional drive is accomplished through the use of a pair of facings or

disks

88 and 89 of fiber or other similar material secured to the base of the bobbin 4] and the top of the pulley 5I by means of the

screws

90 and 9|, respectfully.

Since the bobbin 4'! is only frictionally driven from the pulley 5I, the several generally helical turns of the cord 8 encompassing the driving drum 33 and the stretching cone 43, as well as the multiple cord loops on the several grooved idler rolls I2, I3, I4, I5, 29, and 30, serve to produce a snubbing action which prevents the end of the cord 8 from being drawn completely through the cord treating apparatus I. This stoppage of the cord 8 from drifting or releasing itself is a very important feature of any stop- 8 motion device in that unless this can be satisfactorily achieved, it becomes necessary to rethread the entire apparatus involving loss of time and expenditure of labor.

The feeler 55 of the stop-motion 54 may advantageously take the modified form illustrated in Figs. 9, 10, 11, and 12 and identified by the reference numeral 92. The lowermost end of the feeler 92 and the means for its connection to the rod 6| are identical to those employed with the feeler 55 previously described. The present description will, therefore, be confined to the differences in feeler 92 which are not present in its counterpart element 55.

The feeler 92 is pivotally mounted as by means of the bolt 93, washers 94, 95 and the nut 96 from a bracket 91 suitably secured to the support II. The feeler 92 is provided with a projecting arm 98 extending outwardly from and adjacent the supported end of the feeler. A grooved idler roll 99, which is generally similar to the other idler rolls I2 to IE, inclusive, is freely rotatably mounted on the uppermost extremity I of the arm 98, being retained thereon by a washer iill and a nut I02 threaded on the extremity cooperating with the collar I03 (see Fig. 12).

In normal operation of the cord treating apparatus I, the path of travel of the cord 8 on the apparatus is modified only in the respect that a segment of the cord is brought upwardly from the idler rolls I2 to I5, inclusive, to permit it to pass over the idler roll 99 on the arm 99 of the feeler 92. This additional length of cord 8 employed in placing the feeler 92 in operative position affords a somewhat longer tail portion in the event of a supply run-out. The longer tail portion insures that the stop-motion 54 will operate to stop the Withdrawal of the cord 8 before the end passes over the idler 99. Thus, it is seldom necessary to rethread any of the cord path in the cord treating apparatus I.

From an inspection of the cord path illustrated in Fig. 9, it will be noted that as soon as the cord supply runs out, the vertically projecting portion of the cord 3 will drop. This action relieves the biasing effect of the cord 8 passing around the idler 99 and the feeler 92, being counterbalanced, pivots about the bolt 93 and moves instantly through the path indicated by the dotted arrow to a substantially vertical position. This travel of the feeler 92, as we have already seen, sets in motion all of the related elements of the stopmotion 54, disengaging the drive for the cord manipulating devices 25 and acting to snub the cord 8 so as to stop it from being Wound up on the bobbin 47.

In addition to the steps previously described, the travel of the feeler 92 through the arcuate path indicated by the dotted arrow in Fig. 9 puts an additional brake on the cord 8. A brake ele ment I04 is secured to and supported by the bracket I05 mounted in suitable fashion at or adjacent the uppermost end of the support II. The concave surface of the brake element I94 is provided with a facing I09 of suitable friction material which may be of the order of rubber, leather, or other similar substances.

As will be seen from Fig. 9, when th lower end of the feeler 92 swings in the direction indicated toward the vertical position, the uppermost extremity I09 of the arm 98 on the feeler will swing in the opposite direction (see arrow). This travel of the uppermost extremity I90 of the arm 98 will bring the idler roll 99 mounted thereon into contact with the facing I06 in the c ncave surface of theb ake. element 1.04.. he action of the vbrake element l M re ist ring with the roove in the'idlerroll. 99.2 .1135 the end o the. ord. 5 in the manner shown in ig.

While certain representativeembo im s a d tails hav been shown fo h purp e f l ustrating the, invention, it will be apparent to those skilled in this art that Yari us cha s a modifications may e .made herein Withou parting from the spirit or scope of the inven-. tion.

We claim:

1. Ap aratus for the treatment of 00rd,,thread, and other similar filamentous material of substantially continuous lengths comprising acord supply; a cord manipulating device which exerts tension on the cord as it is withdrawn .from the cord supp y; means for driving the cord manipulating device; a cam for selectively disengagingvthe cord manipulating device from the driving means and temporarily maintainingthem in disengaged relation; ashiftably mounted feeler element arranged to contact and be retained in position by the cord as it passes between the cordsupply and the cord manipulating device; means on the driving means for actuating the cam; and a trip mechanism which is operated by the feeler element in the event of relaxation of the cord tension thereon to release the cam for engagement with the cam actuating means.

2. Apparatus for the treatment of cord, thread, and other similar filamentous material of substantially continuous lengths comprising a cord supply; a cord manipulating device which exerts tension on the cord as it is withdrawn from the cord supply; means for driving-the cord manipulating device; a cam for selectively disengaging the cord manipulating device from the driving means and temporarily maintaining them in disengaged relation; a counterweighted feeler element for contacting the cord between the cord supply and the cord manipulating device, said feeler element being temporarily biased against its counterweight by the cord; means on the driving means for actuating the cam; and a trip mechanism. which is operated by the feeler element to release th cam for driving engagement with the cam actuating means.

3. Apparatus for the treatment of cord, thread, and. other similar filamentous material of substantially continuous lengths comprising a cord supply; a cord manipulatingdevice which exerts tension on the cord as it is withdrawn from the cord supply; means for driving the cord manip ulating device; a cam for selectively disengaging the cord manipulating device from the driving means and temporarily maintaining them in disengaged relation; a counterweighted feeler elementfor contacting the cord between the cord supply and the cord manipulating device, said feeler element being temporarily biased against its counterweight by the cord; means on the driving means for actuating the cam; a slidable member for retaining the cam ininoperative relat on withresp c t the cam actuatin -means; andl hae c nnectin t e slida e em to the feeler element.

4. Apparatus for the treatment of cord, thread, and other similar filamentous material of substantially continuous lengths comprising a cord supply; a cord manipulating device which exerts tension on the cord as it is withdrawn from the cord supply; means for driving the cord manipulating device; a cam jor selectively disengaging the cord manipulating device from th driving means and temporarily maintainingthem indisengaged relation; a counterweighted f eler 516? ment for contacting the cord between thecord. supply and the, cord manipulating device, said feeler element being temporarily biased against its counterweight by the cord; means on the driving means for actuating the cam; a slidable memher for retaining the cam in inoperative relation with respect to the cam actuating means; means on the slidable member for biasing it in opposition to the. action of the feeler element; and link-. age connecting the slidable member to the feeler element.

5. In an apparatus for th manipulation of cord, thread, and other similar filamentousmaterial of substantially continuous lengths embodying a cord manipulating device and means. for. driving the cord manipulating device, a stop motion comprising means for disengaging the driving means from the cord manipulating de vice; means on the driving means for actuating the disengaging means; and means the operation of which is initiated by the cord for .rnaintaining the disengaging means temporarily in inoperative relation with respect to the actuating means.

6. Apparatus for. the treatment of cord,thread, and other similar filamentous material of-substantially continuous lengths comprising a cord supply; a cord manipulating device which exerts tension on the cord as it is withdrawn from the cord supply; means for driving the cord manipulating device; means so constructed and arranged that it is actuated upon relaxation of the; tension in the cord passing between the cord supply and the cord manipulating device for selectively disengagingthe cord manipulating device from the driving means and temporarily maintaining them in disengaged relation; and means disposed adjacent the contacting means for snubbing the cord against the contacting means on the disengagement of the cord manipulating device from the driving means. v

7. A paratus for the treatmentof cord, thread, and other similar filamentous material of substantially continuous lengths comprising a cord supply; a cord manipulating device which'lexerts tension on the cord as it is withdrawn from the cord supply; means fordriving the cord manipulating device; means for contacting the cord as it passes between the cord supply and the cord manipulating device, said contacting meansbeing operable upon relaxation of the tension in the cord; means actuated by the contacting means for selectively disengaging the cord manipulating device from the driving means and temporarily maintaining them in disengaged relation; vand means disposed adjacent the contacting vmeans for snubbing the cord against the contacting means on the disengagement of the cordmanipulating device fromthe driving means.

- 8. Apparatus for the treatment of cord, thread, and other similar filamentous material of substantially continuous lengths comprising a cord supply; a cord manipulating device which exerts tension on the cord as it is withdrawn from the cord supply; means for driving theco 'd manipulating device; a cam for selectively disengaging the cord manipulating device fromthe driving means and temporarilymaintaining. them in disen a ed re t mea d s sed n the path of the cord passing between the cord supply and the cord manipulating device for contacting the cord, said contacting means being operable upon relaxation of the tension in the cord to actuate the cam; and means adjacent the contacting means for snubbing the cord against the contacting means when the tension on the cord is relaxed.

9. Apparatus for the treatment of cord, thread, and other similar filamentous material of substantially continuous lengths comprising a cord supply; a cord manipulating device which exerts tension on the cord as it is withdrawn from the cord supply; means for driving the cord manipulating device; a cam for selectively disengaging the cord manipulating device from the driving means and temporarily maintaining them in disengaged relation; a shiftably mounted feeler element arranged to contact and be retained in position by the cord as it passes between the cord supply and the cord manipulating device; a trip mechanism operable on the shifting of the feeler element in the event of relaxation of the cord tension against the feeler element to release the cam; and means adjacent the feeler element for snubbing the cord thereagainst whenever the cord fails to restrain the shiftable movement of the feeler element.

1%. Apparatus for the treatment of cord, thread, and other similar filamentous material of substantially continuous lengths comprising a cord supply; a cord manipulating device which exerts tension on the cord as it is withdrawn from the cord supply; means for driving the cord manipulating device; a cam for selectivel disengaging the cord manipulating device from the driving means and temporarily maintaining them in disengaged relation; 9. shiftably mounted feeler element arranged to contact and be retained in position by the cord as it passes between the cord supply and the cord manipulating device; means on the driving means for actuating the cam; a trip mechanism which is operated by the feeler element in the event of relaxation of the cord tension thereon to release the cam for engagement with the cam actuating means; and a brake element for engaging the cord in contact with the feeler element on the failure of the cord to restrain the shiftable movement of the feeler element.

11. Apparatus for the treatment of cord, thread, and other similar filamentous material of substantially continuous lengths comprising a cord supply; a cord manipulating device which exerts tension on the cord as it is withdrawn from the cord supply; means for driving the cord manipulating device; a cam for selectively disengaging the cord manipulating device from the driving means and temporarily maintaining them in disengaged relation; a counterweighted feeler element for contacting the cord between the cord supply and the cord manipulating device, said feeler element being temporarily biased against its counterweight by the cord; means on the driving means for actuating the cam; a trip mechanism which is operated by the feeler element to release the cam for driving engagement with the cam actuating means; and a brake element for engaging the cord in contact with the ieeler element when the counterweight thereon overcomes the bias of the cord.

12. Apparatus for the treatment of cord, thread, and other similar filamentous material of substantially continuous lengths comprising a cord supply; a cord manipulating device which exerts tension on the cord as it is withdrawn from the cord supply; means for driving the cord manipulating device; a cam for selectively disengaging the cord manipulating device from the driving means and temporarily maintaining them in disengaged relation; a counterweighted feeler element for contacting the cord between the cord supply and the cord manipulatingdevice, said feeler element being temporarily biased against its counterweight by the cord; means on the driving means for actuating the cam; a slidable member for retaining the cam in inoperative relation with respect to the cam actuating means; linkage connecting the slidable member to the feeler element; and a brake element for engaging the cord while in contact with the feeler element when the counterweight thereon overcomes the bias of the cord.

13. Apparatus for the treatment of cord, thread, and other similar filamentous material of substantially continuous lengths comprising a cord supply; a cord manipulating device which exerts tension on the cord as it is withdrawn from the cord supply; means for driving the cord manipulating device; a cam for selectively disengaging the cord manipulating device from the driving means and temporarily maintaining them in dis engaged relation; a counterweighted feeler element for contacting the cord between the cord supply and the cord manipulating device, said feeler element being temporarily biased against its counterweight by the cord; means on the driving means for actuating the cam; a slidable member for retaining the cam in inoperative relation with respect to the cam actuating means; means on the slidable member for biasing it in opposition to the action of the feeler element; linkage connecting the slidable member to the ieeler element; and a brake element for engagement with the feeler element to snub the cord thereagainst when the counterweight on the feeler element overcomes the bias of the cord thereon.

14. In an apparatus for the manipulation of cord, thread, and other similar filamentous material of substantially continuous lengths embodying a cord manipulating device and means for driving the cord manipulating device, a stop motion comprising means for disengaging the driving means from the cord manipulating device; means on the driving means for actuating the disengaging means; means the operation of which is initiated by the cord for maintaining the disengaging means temporarily in inoperatve relation with respect to the actuating means; and means cooperating with the last-mentioned means for snubbing the cord when the disengaging means is operated.

RAYMOND E. SOLLIDAY. SAMUEL A. STEERE.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,185,245 Cotchett Jan. 2, 1940 2,212,691 Kershaw Aug. 27, 1940 2,226,135 Newton et al Dec. 24, 1940 2,263,278 Senna Nov. 18, 1941 FOREIGN PATENTS Number Country Date 436,857 Great Britain Oct. 21, 1935 476,170 Great Britain Nov. 29, 1937