US2743063A

US2743063A - Stop-motion for winding and like machines

Info

Publication number: US2743063A
Application number: US320065A
Authority: US
Inventors: Dimitri G Soussloff; Raymond V Tata
Original assignee: Leesona Corp
Current assignee: Leesona Corp
Priority date: 1952-11-12
Filing date: 1952-11-12
Publication date: 1956-04-24
Anticipated expiration: 1973-04-24

Description

April 5 D. G. SOUSSLOFF ETAL 2,743,063

STOP-MOTION FOR WINDING AND THE LIKE MACHINES 4 Sheets-Sheet 1 Filed Nov. 12, 1952 [laden iors: JZDZ imj 12 G. So usslal)" a" mo nd V Tuba fllfiorn 'eys.

April 24, 1956 D SOUSSLOFF ETAL 2,743,063

STOP-MOTION FOR WINDING AND THE LIKE MACHINES Filed Nov. 12, 1952 4 Sheets-Sheet 2 In den bar's: Dimitri GLSo ass laff a Ra ymond VTal'a w g vwa flli'orn e ys.

April 1956 D. G. SOUSSLOFF ETAL 2,743,063

STOP-MOTION FOR WINDING AND THE LIKE MACHINES Filed Nov. 12, 1952 4 Sheets-Sheet 3 In lien bars: Rfljmjlr/ 615 51 88101? M a mozzd al'a By flit orn e ys.

April 1955 D. G. SOUSSLOFF ETAL 2,743,063

STOP-MOTION FOR WINDING AND THE LIKE MACHINES Filed Nov. 12, 1952 4 Sheets-Sheet 4 Qimjici GSoussloff MERa mond VTaZa 5y fll-born e ys.

United States Patent STOP-MOTION non WINDING AND LIKE V MACHINES Application November 12, 1952, Serial No. 320,065

13 Claims. (Cl. 242-37) :This invention consists in an improved stop-motion de vice for winding machines, twisting machines and, like textile apparatus embodying means for packaging yarn,-

thread and similar filamentary materials.

In the present specification and claims the term yarn is used in a general sense to indicate all types of attenuated material and the term package is intended to designate the wound mass of material whatever its form or dimensions.

One object of the invention is to provide a stop-motion device for arresting the operation of the machine when the yarn breaks or its supply is exhausted, and particularly to relieve the yarn strand of undue pressure tending to increase the tension therein.

Another object is to provide in a device of the type indicated means engageable with the running yarn strand and adapted when released to actuate the stopping means of the machine, with the yarn-engaging means so balanced as to apply only very slight pressure on the strand withou materially augmenting the tension therein.

Another object is to provide a device of the type indicated having a pivoted breakage-lever, so-called, statically balanced to adapt it to apply only a minimum of pressure on the yarn yet capable of prompt action for operating the stopping means of the machine. H

Another object is to provide in a machine in which the package is driven by peripheral contact with a rotary driving drum, means actuated by release of the breakage-lever to raise the package off from the drum to arrest its rotation.

Another object is to provide a stop-motion device for arresting the operation of the machine when the yarn being wound breaks or its supply is exhausted provided with a resetting mechanism which automatically places the device in operative condition following each operating cycle.

Further objects of the invention are to simplify and improve the construction and arrangement of the stop-motion device while rendering it economical to manufacture and proof against derangement or getting out of order.

The present invention is herein illustrated as applied to use on a twisting machine in which the twisted yarn or thread is wound on a bobbin, spool or other supporting core with the package driven by surface contact with a rotating drum. It is to be understood, howeventhat the device may be applied to other types of machines in which yarn or thread is wound into a package, all within the pur view of the present invention. y

In the accompanying drawings:

Fig. 1 is a side elevational view of the present stopmotion device applied to the winding mechanism of a twisting machine and showing it as arranged for winding a package on a tubular core mounted on a rotatable copholder supported by a hinged arm to adapt the axis of the package to recede from the driving-drum with the increase in diameter of the winding mass;

Fig. 2 is a plan view of the deviceshown in Fig. 1;

Fig. 3 is a view illustrating the device with the packagecore or cop-tube in contact with the driving drum and the stopping means engaged for raising the cop-holder off the drum;

Fig. 4 shows the stopping means engaged and the copholder raised away from the'driving drum by the pivotal motion of its supporting arm as actuated by the stopping means;

Fig. 5 is a view showing the cop-holder raised from the drum with its supporting arm locked in elevated position and illustrating the stopping means as released;

Fig. 6 is a sectional detailed view of the detent-means for locking the package-supporting arm in raised position showing it before it is engaged; and i Fig. 7 is a similar view showing the detent-means engaged to hold the package-supporting arm elevated With the cop-holder raised above the driving drum.

The present stop-motion or control device may be constructed with its parts assembled as a unit for attachment to winding and like textile machines. As herein illustrated, by way of example, the operating parts of the device are mounted on a bearing-member or bracket 2 which may be attached to any suitable support in the framework of the machine to which it is applied. Thebearing-member 2 is provided with projecting lugs 3 at its sides formed with slots 4, see Figs. 2 and 3, through which bolts 5 may be inserted for attaching the member to a part of the frame of the machine, such, for example, as the horizontal crossbar 10. Preferably the member 2 is provided with projecting lugs 6 at the top adapted to seat on the top of the bar 10. Screws 7 in the lugs 6 may be employed to leveling the bearing-member 2. Nuts 11 screwed onto the ends of the bolts 5 bind against washers 12 abutting the inner face of the bar to fasten the bearingmember 2 fixedly thereto. The bearing-member or bracket 2 may be of skeleton structure with bifurcated portions at top and bottom curving forwardly therefrom in the form of arms for supporting apair of integral bosses or hubs 13.

The hubs 13 are bored to receive bushings 14 in which is journaled a main shaft 15 serving as the pivoted support for the bobbin-hanger, so-called, consisting in an arm 16 carrying a horizontal spindle 17. In other instances a pair of arms may be mounted on the shaft 15 with suitable bearings at their ends for receiving the gudgeons of a spool on which the package is to be wound. v

in the present form of bobbin-hanger a single arm 16 carrying the spindle 17 is used for supporting the bobbin or package, its inner end being constructed with a hub 21 secured fast to the end of the shaft 15 by a pin 22 shown in Fig. 3, or other suitable means. The arm 16 is herein illustrated as of part-skeleton construction to reduce the weight, with its outer end bifurcated and projecting downwardly at an angle. Hinged between the bifurcations 24 at the end of the arm 16 is a block-like bearing-member 25 in which is fixedly mounted the end of the spindle i7 fcrrotatably mounting a copholder 26, indicated by dotted-lines in Fig. 2, on which may be held a tubular paper core C. This form of construction for mounting the cop-tube holder 26 is well known to those versed in the present art and therefore not herein shown and described in detail. Sufiice it to state that the cop-tube holder 26 is journaled for rotation on the dead spindle l7 and secured from axial movement by suitable means incorporating a screw 27 at the end of the spindle. Usually expansion means are provided on the holder 26 for clamping the tube C thereto to secure it rotatably therewith. As herein illustrated, the inner end of the holder 26 is provided with a circular flange 29' against which the end of the cop-tube C abuts when in place on the holder. 1 p

As previously stated, the package is driven by peripheral contact with a driving drum, a usual practice in machines of the present type, the drum 30 being mounted fast on a horizontal shaft 31 journaled in suitable bearings, indicated at 32 in Fig. l, and forming a part of the frame of the Winding or other machine on which the device is used. Extending horizontally at the front of the drum 30 is a traverse-bar 33 slidably mounted in bearings on the machine frame and carrying a rearwardly projecting thread-guide 35 having a slot 36 at its forward end through which the yarn feeds to the winding package. The traverse-bar 33 may be reciprocated by any usual means such as a cylindrical cam at the head end of the machine. As this part of the machine is of conventional design and forms no part of the present invention it requires no further detailed description herein. It is to be noted, however, that a horizontal rod 37 is arranged in advance of the thread-guide 35 to adapt the strand of yarn to draw thereacross as it feeds to the guide 35 and delivers to the package being wound, the rod 37 being fixedly held in suitable bearings on the machine frame.

Machines of the present type are usually provided with a rock-shaft such as shown in the present drawings and designated 39. In the present form of construction the rock-shaft 39 carries a rocker-element 40 having a bifurcated hub clamped to the shaft 39 by means of a bolt 41 and nut 42. The rocker-element 40 has an arm 43 projecting forwardly from the shaft 39 and formed at its end with a laterally-extending lug 45 which is pointed or V-shaped in side view to adapt it to engage the hooked end of a pendent pawl-like member 46. The hooked pawl or member 46 is mounted fast on a small horizontal shaft 50, a flat-sided bushing 51 being secured in a corresponding hole in the hub of said member, see Fig. 6, and having its bore flatted at 52 to engage the fiatted side of the shaft. The pawl 46 has a spring 47 surrounding its hub with one leg 48 reaching downwardly and secured by any suitable means to an ear 49 on the side of the pawl; its opposite leg being adapted to be brought to bear against the top of aweb portion of the bracket 2, see Fig. 4, to load said spring when the arm 16 is in its raised position.

The outer end of the shaft 50 is journaled in a lug 53 projecting from the rearward side of the hub 21 on the package-carrying arm 16, see Figs. 1 and 2, with its opposite end extending through bearing bores in the bifurcations 54 of a collar-like member 55 secured fast on the shaft 15 which carries the arm 16. The member 55 is generally of cylindrical form with its ends abutting the sides of the hubs 13 on the bearing-member 2 and secured fast to the shaft 15 by a pin 56. The collat-member 55 is thus caused to rotate with the shaft 15, being constituted as a detent-element for locking the shaft when the latter is turned to swing the arm 16 upwardly in raising the cop-holder 26 above the driving drum 30. For this purpose the member 55 is formed with a projecting shoulder 57 on its under side which is engageable by a detent-pawl 58, see Fig. 7, carried by a rockable shaft 60. The detent-pawl 58 is secured fast to the shaft 60 by a pin 61 to adapt it to turn with the latter. The shaft 60 is rockably mounted in the bores of bosses 62 and 63 on the arms of the main bearing member or bracket 2, its outer end being bent around at right-angles to provide a crank-arm 64 for rocking the shaft to release the pawl 58 in the manner and for the purpose later explained.

Referring to Figs. 6 and 7, the detent-pawl 58 carries a substantially flat leaf-spring 65 overlying its upper face and held in place by a down-turned flange 66 abutting the side of the pawl and encircling the shaft 60. The free end of the spring 65 bears against the web 67 which connects the two arms supporting the hubs 13 of the bearing-bracket 2, thereby exerting a resilient pressure tending to rock the pawl 58 to engage its end with the shoulder 57 on the collar-member 55 as shown in Fig. 7.

The breakage-lever 70 which is adapted to be released, upon breakage of the'yarn or exhaustion of its supply, to initiate.theoperation-ofthe stopping means is mounted fast on the end of the shaft 50 whereby to cause it to rock said shaft to throw the pawl 46 into position to be engaged by the rocker-arm 43. As herein shown, the lever 70, see Figs. 1 and 2, is constructed of light-weight fiat bar-stock with its rearward, substantially upright portion fastened to a split hub 71 secured fast to the shaft 50 by a screw 72 extending through the bifurcated portions of the hub and clamped by a nut 73 on the threaded end of the screw. The nut 73 is set up against a small plate 74 which binds the upright portion of the lever '70 in a slot in the side of the hub 71, see Fig. 3. The lever 75) extends forwardly from its upright portion in a long arm 75 which is bent at an angle at 76 and then extended forwardly at 77 with a wire bail 80 riveted to the end thereof. As shown in Figs. 1 and 2, the wire bail 80 has a flattened portion 81 fastened to the under side of the lever 70 by rivets 82 with the wire curled around and extending laterally at the front in a horizontal portion 83 with which the yarn strand y is adapted to engage as it feeds across the fixed rod 37 and thence to the threadguide 35. The lever 70 has a rearwardly-extending tailportion or short arm 84 on which is mounted a weight 85 of considerable mass for balancing the long arm 75 of the lever.

The weight 85 is provided with a slot 86 through which the end of the tail-portion 84 of the lever 70 projects with a set-screw 87 engaging a clamping strip or shoe 88 for binding the weight in adjusted position on the lever. It will thus be seen that the breakage-lever 70 is pivotally mounted in the lug or extension 53 which projects from the rearward side of the hub 21 on the package-carrying arm 16, the weight 85 on the short arm of the lever being employed .for balancing its longer arm which is engaged by the running strand of yarn. The upward swinging movement of the breakage-lever 70 is controlled by an upstanding guiding member 90 clamped to a horizontal bar 91 supported on the frame of the machine at the front of the drum 30, see Fig. 1. The lower portion of the member 90 is formed of bifurcations 92 and 93 clamped against the bar 91 by a bolt 94 and nut 95. The upstanding portion of the member 90 is formed with a slot 89 through which the forward inclined portion of the lever 70 passes, the slot being closed at the top to limit the upward swinging motion of the lever.

Overlying the top and side of the paekage-carryingarm 16 is a sheet-metal lever 96 having hinge-

ears

97 and 98, see Fig.2, straddling the sides of the hub 21 and formed with circular apertures for pivoting it on the shaft 15. The lever 96 is formed at its forward end with an upwardly and .reversely curved finger-piece 99 by which it maybe rocked .upwardly manually by pivoting it on the shaft 15. Aleaf-spring 100 riveted to the under side of the top of the lever 96 at its rearward end projects rearwardly therefrom in an arcuate portion bearing on the top of the lug 53 on the arm 16 for resiliently resisting the upward swinging movement of the lever 96, see Figs. 1, 2 and 3. The upward swinging movement of the lever 96 is positively limited by an adjustable stud threaded through a washer 106 overlying the top of an car 107 bent inwardly from the side of the lever, see Figs. 1 and 5, the end of 'the stud .being adapted to engage against the upper wall of .the arm 16 within a rectangular opening 108. A nut :11!) on the stud 105 is set up against the under side of the ear 107 to lock the stud in its adjusted relationship.

The rearward .inner bearing ear 98 on the lever 96 is formedwith a right-angular bent portion or finger 111, see Figs. 2 and 5, adapted to strike against the rightangular crank-arm 64 at the end of the shaft 60 for rocking said shaft to release the detent-pawl 58 from the shoulder 57 on the collar or latchingmember 55. Such release is effected by manually raising the lever 96 as represented in Fig. 'ScWhereby to permit the arm 16 to.be lowered for placing .the cop-holder 26 or the package wound'tlrereon in.driving contact with the drum '30. To

limit the downward movement of the arm 16 a stop-screw 115, see Figs. 5 and 6, may be threaded through a boss 116 on the top of the bearing-member 2 in position for its end to engage one of the bifurcations 54 on the collar 55 which is fast on the shaft 50 carrying the arm 16. A nut 117 threaded onto the stud 105 is set up against the boss 116 to lock thestud in its adjusted relationship.

The construction and arrangement of the various elements of the present stop-motion orcontrol device having been described in detail, the method of its operation is explained as follows.

Assuming that the winding operation has been arrestedwith the package-carrying arm 16 raised into the position shown in Fig. 4 and held by the locking means, the wound package may be removed: with its core or tube C and a fresh tube placed on the holder 26. To return the package-holder to winding position the operator may lift the lever 96 by means of its finger-piece 99, see Fig. 5', thereby pivoting it on the shaft 15 to cause its finger 111 to engage the crank-arm 64 and rock the shaft 60. The shaft 60 will thus rock the detent-pawl 58 to release it from the locking shoulder 57 on the collar or locking member 55. Consequently, the shaft 15 will be permitted to turn'and swing the arm 16 downwardly for placing the periphery of the cop-tube C in driving contact with the drum 30. Fig. 5 illustrates the lever 96 as having been raised to release the pawl 58 from the locking collar 55, but still being held forjlowering the arm' 16 gradually in placing the cop-holder 26 on the drum 3! Previously, the pawl 46 has been released from the lug 45 on the rocker-arm 43 due to the continuous oscillation of the latter and the shaft 50 will have been partially rotated by the spring 47 to lower the breakage-lever 70 to its normal running position and to swing the pawl 46 rearwardly out of the path of the lug 45.

The yarn y or other filamentary strand is drawn off from its supply, usually arranged below, carried upwardly across the bail 83 on thelever 70, thence above the rod 37 and its end attached to the cop-tube C to cause it to wind thereon as the tube contacts with the drum 30. The thread-guide 35 may be of the self-threading type to pick up the'strand in its slot 36 as it crosses thereunder. Winding of the package on the cop-tube C will therefore be continued with the strand deposited'in crossing turns building up in superimposed layers. As the winding package increases in diameter the cop-holder 26 Will be gradually forced upwardly with the supporting arm 16 pivoting about the axis of the shaft 15 to which it is fixedly secured.

During the winding operation the breakage-lever 70 will bemaintained in its lowermost position as shown in Fig. l by the strand of yarn y drawing across'the bail 83 and over the rod 37 to the thread-guide 35. It will be understood that the weight 85 is initially adjusted longitudinally of the short arm 84 of the lever 70 to bal-' ance its long arm 75 so that the bail 83 exerts very slight pressure against the feeding yarn. In this way the tension on the strand is not augmented to any considerable degree, a most important consideration in winding fine, gossamer filaments such as synthetic yarns. The breakagelever 70 remains depressed unless the strand breaks or its supply is exhausted when the bail 83 will be released. Upon release of the yarn from the bail 83 on the lever 70 the latterwill be swung upwardly by the weight 85 on the arm 84, thereby rotating the shaft 50 to which the hub of the pawl 46 is fixedly secured. Rotation of the shaft 50 will rock the pawl 46 forwardly into the position illustrated in Fig. 4 to cause it to be engaged by the lug on the arm 43 of the rocker-element 40. Downward oscillation of the rocker-arm '43 will thus act to pull down on the pawl 46 and thereby draw the shaft 50 down to turn the shaft 15,clockwise as viewed in Fig. 3. This acts to pivot the arm 16 and'lift the cop-holder 26 above the drum 30 as shown in Fig. 4. The downward movement of the shaft 50 also brings the free end of the spring 47 into engagement with the top of the web pertion 67 of the bracket 2 to load said spring. During the raising of the arm 16 as above explained, the shoulder 57 on the lockingmember 55 will be turned into position to be engaged by the-.detent-pawl 58 under the tension of its spring 65, asshown in Fig. 7, whereby to lock the arm 16 in its elevated relationship. It will be understood that the rocker-element 40 is oscillated continuously during the operation of the machine and consequently the lug 45 on the arm 43 will be released from engagement with the pawl 46 by the upward motion of said lug immediately the arm 16 has been locked in elevated relationship. Immediately upon the release of the pawl 46 by the lug 45 the spring 47 acts upon the shaft 50 to rotate said shaft in a counterclockwise direction, as viewed in Fig. 4,.t0 swing the pawl 46 rearwardly out of the path of the lug 45 and lower the breakage-lever 70 to the normal winding position.

After the broken strand has been pieced up or a fresh end supplied to the winding mechanism the arm 16 may be lowered in the manner previously explained by first lifting the lever 96 to release the detent-pawl 58, thereby returning the winding package into peripheral contact with the driving drum 30. It will therefore be seen that no manual operation is required of the operator to reset the stop-motion, the pieced-up or fresh strand of yarn, due to its contact with the bail 83, acting to maintain the breakage-lever 70 in its lowered position and retain the pawl 46 out of the path of the lug 45.

It will be observed from the foregoing specification that the present invention provides a novel and improved stop-motion or control device for use with the winding mechanism of various types of machines. The operating elements of the device may be assembled as a unit for attachment to a part of the frame of such a machine; the mechanism being simple in construction, compact in size, and practically proof against derangement or getting out of order.v

While the device is herein described and illustrated as applied to a winding mechanism in which the winding package is supported on a single pivoted arm, the mechanism may be used with double-armed bobbin-hangers or cradles designed for rotatably mounting diiferent kinds of package-holders such as spools and the like. Various other changes may be made in the construction and arrangement of the parts of the device without departing from the scope of the invention as expressed in the followpivot the bobbin-hanger and raise the package, a pivoted I breakage-lever normally held inactive by the yarn feeding to the package, means connecting said breakage-lever to move the pawl into position to be engaged by said rockerelenient upon release of said lever from the yarn, normally deenergized resilient means for returningsaid pawl to position out of the range of action of said rocker-element and for returning the breakage-lever to initial position after the raising of the package from the driving drum, and means actuated by the pawl during its movement into posi tion for engagement with the rocker-element for energizing said resilient means.

2. In a winding mechanism embodying a rotary driving drum and a rotatable cop-holder, a bobbin-hanger for supporting said cop-holder, a rockable shaft on which said bobbin-hanger is fixedly mounted at one end to adapt said cop-holder. to swing away from the driving drum duringthe growth in the winding, a second shaft rockably' bobbin-hanger, a breakage-lever having its end fixed to said second shaft with an arm extending forwardly therefrom for engagement with the yarnrfeeding to the package being wound on the cop-holder, a hooked member fast on said second shaft to adapt it to be rocked by movement of said breakage-lever upon its release by failure of the feeding yarn, and a continuously oscillated rocker-element having means engageable with said hooked member to draw it down and rock the first shaft to pivot the bobbinhanger upwardly for raising the cop-holder above the driving drum.

3. in a winding mechanism embodying a rotary driving drum and a rotatable cop-holder, a bobbin-hanger for supporting said cop-holder with the package wound thereon in contact with the periphery of said driving drum, means for pivotally mounting said bobbin-hanger to adapt the cop-holder to recede from the driving drum during the growth in the package wound thereon, a member movable by and with the pivoting movement of said bobbin-hanger on the opposite side of its pivot from the cop-holder, a hooked pawl rockably suspended from said member, a breakage-lever having its end connected to said tooked pawl to adapt it to rock the latter, said breakagelever extending forwardly therefrom into position for engaging the yarn feeding to a package wound on the copholder, a continuously-oscillated rocker-shaft, and a hooked element on said rocker-shaft engageable with the hook on said pawl to draw it downwardly and raise the bobbin-hanger for moving the cop-holder away from the driving drum.

4. In a winding mechanism embodying a rotary driving drum and a pivoted bobbin-hanger for supporting a yarn-package in driving contact with said drum, a hooked pawl connected to said bobbin-hanger for pivoting it to raise the package from said drum, an oscillating rockerelement engageable with said pawl to cause the latter to pivot the bobbin-hanger and raise the package, a pivoted breakage-lever normally held inactive by the yarn feeding to the package, means connecting said breakage-lever with the pawl to rock it into position to be engaged by said rocker-element to pivot the bobbin-hanger and raise the package from the drum, and normally inactive means energized by the raising of the bobbin-hanger to cause it to move said pawl out of range of said rocker-element, said pawhmoving means being released to allow the pawl to return to initial relationship when the bobbin-hanger is lowered to place the yarn-package in driving contact with the driving drum.

5. In a winding mechanism embodying a rotary driving drum and a rotatable cop-holder, the combination of a pivoted arm for supporting said cop-holder to adapt it to recede from the driving drum, a rockable shaft for pivotally mounting said arm at one end, a hooked pawl, means for pivotally suspending said pawl on the opposite side of said shaft from said arm, means connecting said pawl with said arm to rock its forward end upwardly for raising the cop-holder away from the driving drum, a breakage-lever having one end fastened to the pawl for rocking it and its opposite end positioned for contact with the yarn feeding to a package wound on the cop-holder, and a continuously-oscillating rocker-element engageable with the hooked pawl to draw it downwardly for pivoting the arm upwardly, said breakage-lever acting when released by failure of the feeding yarn to rock the pawl into position for engagement by said rocker-element.

6. In a winding mechanism embodying a rotary driving drum and a rotatable cop-holder on which a bobbin may be wound, a bobbin-hanger pivoted at one end and having means at its opposite end for rotatably supporting said cop-holder, a hooked pawl connected to said bobbinhanger on the opposite side of its pivotal axis from said cop-holder, a continuously-oscillated rocker-element engageable with said pawl to draw it downwardlyand swing said bobbin-hanger upwardly to raise the cop-holder away from the driving drum, a breakage-lever pivoted on the same axis with said pawl and connected thereto to rock the pawl into position for engagement by said rockerelement, said breakage-lever having an arm extending forwardly from said pawl with its end positioned to bear against the yarn feeding to a bobbin wound on the copholder, detent-means for locking the bobbin-hanger in elevated position, a manually-operable finger-lever extending forwardly along said bobbin-hanger with its end in position to be grasped, and means for connecting said finger-lever to release said detent-means to cause the bobbin-hanger to descend for moving the cop-holder toward said driving drum.

7. In a winding mechanism embodying a rotary driving drum and a rotatable cop-holder, a stationary bearing member mounted at the rear of said driving drum, a shaft rockably journaled in said bearing member, a bobbin-hanger fastened to said shaft to adapt it to pivot therewith, a cop-holder rotatably mounted at the forward end of said bobbin-hanger, a second shaft mounted to rock in a bearing in a member fast on said first-mentioned shaft and extending rearwardly from said bobbin-hanger, a hooked pawl fast on said second shaft, a continuouslyoscillated rocker-element engageable with said hooked pawl to draw it down and rock the first-named shaft to pivot the bobbin-hanger and lift the cop-holder away from the driving drum, a breakage-lever fixedly connected to said second shaft carrying the hooked pawl and having an arm extending forwardly therefrom for engagement with the yarn feeding to a package being wound on said cop-holder, and a weight adjustable on said breakagelever on the opposite side of its pivot from its forwardlyextending arm, said weight adapted to swing the breakage lever arm upwardly upon its release from the yarn to rock said hooked pawl into position to be engaged by the oscillating hooked element whereby to cause the pawl to pivot the bobbin-hanger for raising the cop-holder away from the driving drum.

8. In a winding mechanism comprising a rotary driving drum and a bobbin-hanger having a pivoted arm with means on said arm for supporting a core for rotation by the drum to wind a package thereon, a shaft on which said arm is pivoted, a second shaft journaled in hearings in an extension of said arm on the opposite side of its pivotal axis from the core-supporting means, a pawl fast on said second shaft and depending therefrom with a hook at its end, an oscillating rocker-element having means engageable with the hook on said pawl to draw the latter downwardly and swing the bobbin-hanger'arm upwardly for removing the package from contact with the driving drum, detent-means for holding the bobbin-hanger in elevated position with the package removed from contact with the driving drum, a breakage-lever fast on said second shaft and extending forwardly therefrom with means at its end engageable with a yarn feeding to the package, means for pivoting said breakage-lever upon its release from the yarn to rotate said second shaft and carry the pawl into position for engagement by said rocker-element, a normally inoperative spring for rocking said pawl, means for loading said spring during the rocking of the pawl into the range of action of the rocker-element, said spring operating when loaded to swing the pawl out of range of the rocker-element when released therefrom to reset the stopping mechanism after the package has been raised from the driving drum, and manually-operable means for releasing the detent-means to cause the bobbinhanger to swing down into position to restart the winding on the core.

9. In a winding mechanism comprising a driving drum and a bobbin-hanger for supporting a core for contact with said driving drum to wind a package thereon, means for pivotally mounting said bobbin-hanger to adapt the bobbin to swing away from the drum to arrest the winding operation, said bobbin-hanger havingian arm extending rearwardly from its pivotal axis, a rock-shaft journaled in said arm, a pawl fast on said rock-shaft and depending therefrom with a hook at its end, a continuously-oscillated rocker-element engageable with the hook on said pawl to draw the latter downwardly and swing the bobbin- -hanger upwardly to raise the package off from the driving drum, a breakage-lever having a hub fast on said rockshaft and extending forwardly therefrom with means at its end engageable with the yarn feeding to the bobbin, means for swinging said breakage-lever upwardly upon its release from the yarn to rotate said rock-shaft and thereby swing the pawl into position to be engaged by said rocker-element, a helical spring surrounding the shaft on which the pawl is mounted and having two projecting legs with one leg engaging said pawl, and means engageable by the other legof the spring to energize it when the pawl is drawn downwardly by engagement with the rocker-element, said spring when energized acting to shift the pawl out of range of the rocker-element when released thereby to reset the stopping mechanism after the packagehas been raised off from the driving drum.

10. In a winding mechanism comprising a rotary driving drum, a shaft journaled in bearings spaced from said drum, a bobbin-hanger fast on said shaft with its arm extending forwardly therefrom, means at the forward end of said arm for rotatably supporting a core in contact with the drum to wind a yarn package thereon, a member fast on said shaft and extending rearwardly therefrom, a second shaft rockably journaled in a bearing in said extension member, a pawl fast on said second shaft and depending therefrom with a hook at its end, a continuously oscillated rocker-element having means engageable with the hook on the pawl to draw it downwardly and rotate the first-named shaft to swing the bobbin-hanger upwardly for raising the package off from the drum, a breakage-lever fast on the second shaft and extending forwardly therefrom to engage a yarn strand feeding to the package, means for raising said breakage-lever upon its release from the yarn to rotate the second shaft and swing the pawl into position for engagement by the rocker-element to raise the bobbin-hanger, detent-means for retaining the bobbin-hanger in raised position, and a normally inactive spring energized during the raising of the bobbin-hanger as thepawl is drawn downwardly by the rocker-element, said spring acting when energized to shift the pawl out of range of the rocker-element and reset the breakage-lever in operative relationship for engaging the yarn.

11. In a winding machine comprising a rotary driving drum and a rotatable cop-holder, a bearing-bracket fixedly attachable to the framework of the winding machine, a shaft journaled in said bearing-bracket, an arm fixedly mounted on the shaft to adapt it to pivot with said shaft, means for mounting the cop-holder on the forward end of said arm, means extending rearwardly from said arm on the opposite side of its pivotal axis from the cop-holder, a second shaft rotatably mounted in said rearward extension, a hooked pawl fast on the second shaft, a continuously-oscillated rocker-element adapted to engage the hooked pawl to draw it downwardly and swing the arm upwardly, a breakage-lever fast on the second shaft carrying the pawl and extending forwardly therefrom for engagement with the yarn delivering to the package, said breakage-lever having an arm extending rearwardly from its mounting on said second shaft, a weight adjustable on said rearward arm, means for fastening said weight in adjusted position on said rearward arm to adapt it to swing the forward arm upwardly upon its release from the yarn and swing the hooked pawl into position for named shaft carrying the arm, said collar having a detentshoulder, a detent-pawl pivoted on, the bracket and engageable with the shoulder on the collar to lock the arm in its elevated position, resilient means for actuating said pawl, and a lever carried by the arm and movable to rock thepawl and release it from the collar to permit the arm to swing downwardly toward the driving drum.

12. For attachment to a winding or like machine comprising a driving drum journaled in the framework of the machine, a bearing bracket attachable to said framework of the machine, a shaft journaled in said bearing bracket, an arm'secured fast on said shaft to swing upwardly by rotary movement of the shaft, a cop-holder mounted on said arm to adapt it to move toward and away from the driving drum, a member fast on the shaft and projecting rearwardly therefrom, a second shaft mounted in a hearing on said member, a pawl fast on the second shaft and depending therefrom with a hook at its end, a rockerelement having means engageable with the hook on said pawl to draw the latter downwardly and turn the firstnamed shaft to swing the arm upwardly, a breakagelever fast on the second shaft and extending forwardly therefrom for engagement with the yarn feeding to the package wound on the cop-holder, said breakage-lever having a rearwardly-extending arm, a weight adjustable on said rearward arm for balancing the breakage-lever to relieve its pressure on the yarn engaging therewith, said breakage-lever acting when moved by the weight to swing the pawl into position for engagement by the rockerelement, a detent-member carried by the first-named shaft, a pawl engageable with said detent-member to lock the arm in raised position, and a manually-operable lever pivoted to the arm and extending forwardly therefrom with means at its pivoted end to rock the detent-pawl for engaging it from the detent-member to permit the arm to swing downwardly and carry the cop-holder toward the driving drum.

13. In a winding or like machine comprising a rotary driving drum, the combination of a bearing bracket adapted to be supported from the frame of said machine, a shaft rotatable in a bearing on said bracket, an arm fixedly mounted on said shaft, means at the forward end of the arm for rotatably mounting a cop-holder, a breakage-lever pivotally mounted on an extension of the arm at the opposite side of the shaft from the cop-holder and engageable with the yarn feeding to the cop holder, a rockable pawl connected to said breakage-lever and having a hook at its end, a rocker-element engageable with said pawl when the latter is rocked by swinging movement of the breakage-lever to draw the pawl downwardly and raise the arm carrying the cop-holder, a collar fast on the shaft with said arm and having a detent-shoulder, a shaft rockably mounted in a bearing on the bracket and formed with a crank-arm, a pawl carried by said last-named shaft and engageable with the detent-shoulder on the collar, a manually-operated lever pivoted on the first-narned shaft and extending forwardly at the side of the arm, and means on said lever engageable with the crank-arm on the lastnamed shaft for rocking the pawl to release it from the detent-collar.

References Cited in the file of this patent UNITED STATES PATENTS 952,015 McKean Mar. 15, 1910 1,644,946 Peterson Oct. 11, 1927 1,958,060 McKean May 8, 1934 2,365,701 Higgins Dec. 26, 1944