US1614298A

US1614298A - Spinning frame

Info

Publication number: US1614298A
Application number: US675035A
Authority: US
Inventors: Louis B Hasbrouck
Original assignee: Individual
Current assignee: Individual
Priority date: 1923-11-16
Filing date: 1923-11-16
Publication date: 1927-01-11
Anticipated expiration: 1944-01-11

Description

Jan. 11 1927.

L. B. HAsBRoUcK SPINNING FRAME Filed Nov. 16. -1923 5 Sheets-Sheet 1 Jan. 11,1927. 1,614,298

' L. B. HASBROUCK SPINNING FRAME Filed Nov. 16,1923 5 Sheets-Sheet 2 Jan. 11,1927. 1,614,298

- L. B. HASBROUCK SPINNING FRAME Filed Nov. 16'. 192.3 v 5 Sheets-Sheet 3 Jam 11 1927' l.. B. HASBROUCK SPINNING FRAME Filed Nov. 16.- 5 sheets-Sheet 4 Jan* 11 1927 l| B. HAsBROUcK SPINNING FRAME Filed Nov. 1e,

1923 5 Sheets-Sheet 5 IMM.

INVENTOR MSW/75 A oRNY Patented Jan. 11, 1927.

LoUIs B. HAsBRoucii, or arianna, New YORK.

SPINNING FRAME.

Application filed November i6, 19,23, Serial No. 675,035.

This invention relates to improvements in spinning frames andthe like, and 'aims t'o eliminate the waste of spinning fiber and the injury to the machinery of the frame resulting from breakage of rovings during spinning.

The invention is directed particularly to the elimination of such waste and such damage in worsted spinning frames, where the loss caused by the breakage of rovings is large owing to the high value of worsted rovings. Owing to the length of the fiber of worsted rovings, which cannot be drawn apart like cotton rovings, and toV the adjustment of the drawing rolls necessary in a worsted frame, it 'has heretofore been thought impossible to provide such frames with automatic means for severing a broken roving in advance of the drawing rolls. As a result, the eiiiciency of worsted spinning` frames has heretofore been impaired by the losses caused by the hailing upI of broken rovings in the drawing rolls.

In accordance with the present invention a worsted spinning frame 'is provided with severing apparatus adjustable with the front drawing rolls and adapted to cut a worsted roving, and with automatic balanced actuating mechanism connected with the severing apparatus, engaging the rovings beyond the drawing rolls, and so arranged that it is not thrown out of balance by a change in the position of the drawing rolls and the severing apparatus. f

lWhile the invention is thus of special Vvalue when incorporated in a worsted spinning frame. its use is by no means limited to such spinning frames, and many features ot the invention, particularly those contributing to the ruggedness of the device and its delicacy of operation, may advantageously be 'incorporated in many other types of spinning frames including cotton spinning frames.

A. feature of the invention consists in combining the seve 1ingapparatus and ,the actuating mechanism in stop-motion device or attachment which'may be applied to existing worsted spinning frames without alteration of any parts of the frame and without interfering in any way with the operation of the frame.

rlhe nature of the invention may best be understood by a detailed description of a worsted spinning frame embodying it. Such a frame is shown in the accompanying drawings, but, in order to illustrate more clearly the novel parts of the apparatu`s,imany of the known parts of the worsted fra-me have been omitted in the drawings. i y

Fig. l is a face view, looking in the direction ofthe arrow l in Fig. 2, of the rolls and roll supports of a worsted spinning frame, showing a stop motion device with each of its units in running position;

Fig. 2 is a transverse section on the line 2-2 of Fig. 1;

Fig. 3 is a fragmentary transverse section on the line 22 of Fig. 1 with one of the actuating shafts removed;

Fig. 4. is an enlarged fragmentary side view of the outer thread guide of one of the units ofthe stop-motion device;

5 is a face View of a pairof units ofthe stop-motion device, both in ruiming position;

Fig. 6 is an outer end view, looking in the direction of the arrows 6 in Figs. 2 and 5, showingthe outer portion of a` pair of actuating vshafts of the stop-motion device;

7 is an inner end view, looking in the direction of the arrow 7 in Fig. 5, of a pair of units of the stop-motion device, showing the severing apparatus and the resetting and locking mechanism;

Fig. 8 is a transverse section on the line 8-8 of Fig. 7

9 is a fragmentary section on the line 8-8 of Fig. 7 showing the individual lock of a pair of the units in raised position;

Fig. l0 is an enlarged face view of the rear portionof a pair of units, showing one of them in running position and the other in severing position;

Fig. 1l is a perspective view of the thread guide which forms part of the severing apparatus; i

Fig. l2 is a transverse section on the line 12-12 of Fig. 10, showing the locking and resetting mechanism of a pair of units;

Fig/13 is a perspective view of the plate of the locking mechanism; and

Fig. le (on Sheet 2) is a transverse tion"on the line 14-14 of Fig. 10, showing one of the supports for the sliding bar of the locking mechanism. f

The 'spinning frame-, The framework of the worsted frame shown in the drawings includes a Creel-board A, a side beam B, inclined cross-beams C extending between the creel board and the side beam at suitable int-ervals and each having at its lower end an enlarged support D which is secured to the side beam B, and longitudinal rails E extending between the supports D and having` their ends secured thereto. Fig. l shows only the portion of the trame between two of the cross-beams C. It is to be'understood that the frame is much longer than the distance between two of these crossbeams and that a large number of crossbeams are provided.

The lower rolls F ot the outer set o'l` rolls are mounted on a longitudinal shaft G supported in bearings provided in the supports D. The upper rolls F ot the outer set are mounted in pairs on stub shafts H whose ends are supported on brackets l secured to the longitudinal rail E and whose middles are held down by spring clamps K secured to curved arms L which extend from the rail E and are usually formed integral therewith.

The other drawing rolls are mounted on carriages adjustable along the cross-beams C which contain longitudinal slots M in which the carriages are secured. rlhe inner drawing` rolls N, N are mounted on carriages l which are termed to provide a slideway Q 'for a reciproeatory rod R which extends the entire length of the spinning trame to carry `guides which direct the roving's te the inner set of' drawing` rolls, N, N. The intermediate sets of rolls S, S and T, T are mounted on adjustable carriages U and V.

.in the operation ot the traine rovings are drawn i'rom supply bobbins 1V mounted on the creel board A, through thread guides mounted on the rod R, and between the four sets ot rolls in a dire :tion approximately parallel to the cross-beams C on which the roll carriages may be adjusted. They are then spun and wound on bobbins carried by spindles located in jt'ront ot the side beam B. One such spindle X with its bobbin Y is shown in Fig'. 2. Between the outer set of rolls F, F and caps Z which guide the yarns spun trom the roi/'ings to the bobbins each roving passes through a thread guide located iu line with the axis ot the spindle on which the thread spun ifi-'om that roving is wound. Although the character ot the rovings is, ol course, changed during their passage through the drawing rolls, the term roving is Ytor convenience herein applied to them until such time as they are actually spun into yarn or thread and wound on the bobbin.

The parts of the spinning t'rame thus tar described are in common. use and do not in themselves constitutie a part ot my invention.

The stop-motion device-The frame illustrated is provided with a stop-motion device consistingv of a plurality of units, there being one unit for each roving which is drawn from a supply bobbin to a spindle. For convenience in supporting their working parts, the units are arranged in pairs. Each unit includes severing

apparatus

15 or 15 located in trent of the inner set ot rolls N, N, and actuating mechanism theretor having the form of a

shaft

16 or 16 ex tending under all the rolls. The stop motion device includes, also, thread guides 17 mounted on the reciprocatory rod R and (littering in form trom the guides ordinarily carried by this rod, and thread guides 1S mounted at the out-er ends ot the actuating`

shafts

16 or 16 and replacing the, thread guides ordinarily provided between the outer set of rolls and the spindles.

The fixed supporting parta- The fixed parts of the stop-motion device provide a support tor the severing

apparatus

15, 15 and supporting` bearings for the

actuating shafts

16, 16. The fixed parts include brackets 2O and bars 21 and 22.

One bracket 20 is provided for each pair ot units. Each bracket 2O has a tab 25 which. is secured by means ot a sere-w 26 to the rail E at' the base of one oit the arms L, and a flat cross-piece 27 containing two holes through which a pair ot' the actuatingshafts 16 and 16 are passed.v i

The bar 21 is mounted on carriages 30 which are secured in the slots M ot the cross-beams C. The bar 21 is parallel to the axes of the rolls and may extend the entire lengt-h olE the trame. To it are secured depending plates 31, each containing' two

holes

32, 32 providino bearings for the upper ends et' a pair or the actuating shafts 1G, 1G. The har 21 also supports the resetting and lool-:ing mechanism which. is hereinafter described.

The bars 22, which bear thc` severing`

apparatus

15 and 15 ot each pair ot units, extend between the carriages l.) which bear the inner set ot rolls N, N so that these bars are always located immediately in trent oi this oi rolls regardless ot the adj ment et the roll carriages on the cross-beams C, Each har 29. has a slotted end which is attached by means oi a screw to a bracket 84: fixed on one ot the carriages l. This provides 'lor a longitudinal adjustment ci? each bar 22. in the. 'term illust-rated each bar located between the reciprocatory rod l?. and the front rolls. Y i

T/:o act/noting incollare/Tant-The actuating'

schatte

16, 16 ot a pair of units are so positioned by the holes in the cross-piece?? et the bracket f2() and the holes 3Q, 89. in the plate 31, in which these sbatte are mounted, that their axes are parallel to the cross-beams C and substantially parallel to the path ot the roving' through the drawing; rolls. To prevent the Vshafts 16, 1G from slots The

shafts

16, 16 arefree to turn in .theiry bearings, but their turning movements are limited by

pins

40, 40 mounted on

discs

41, 41 r'xed on the

shafts

16 and 16, respectively, and projecting through arc-shaped 42, 42 in the plate 31. To facilitate the operation of the resettingmechanism which is hereinafter described, the slot 42 is Vplaced below the hole 32 while the slot .42 is placed above the hole 32.

Then the pin 40 is at or near the inner end 43 of the slot 42, the shaft 1G is in normal or running position, i. e. in position to hold the corresponding severing means clear of its roving, and when this pin is moved into engagement Vwith the outer end 44 ofthe slot 42 the shaft 1G is in severing position, i. e. in position to causethe corresponding severing means to cut its roving. rllhe shaft 16 is in running position when the pin 40 is at or near the outer end V44 of the slot 42,.and in severing position when this pin is in engagement with the inner end 43 of this slot. lt follows that the turning movement of the shaft 16 from running to severing position is in a clock-wise direction looking from the outer end of the shaft, while the turning movement of the shaft 16 from running lto severing position is in an anti-clockwise` direction. The angular turning is in each case less than 90.

The turning of each shaft is controlled by a lateral projection on the shaft engag" ing a roving beyond the outer drawing rolls F, F, and the turning is utilized by means of a lateral projection on the shaft engaging the severing

apparatus

15 or 15 to actuate this apparatus to cut the roving inY advance of the inner drawing Vrolls N, N. It should be noted that the length of each shaft is such that it extends, in the direction of its axis, from a point some distance in advance of the inner drawing rolls N, NVv to a point beyond the outer drawing rolls F, F, so that, at the inner end of the shaft its axis is close to the corresponding severing apparatus 15 which is located in advance of the inn'er'drawing rolls, while at its outer end, its axis is close to the portion of the roving extending from the outer drawing rolls to a spindle. In consequence both the lateral projection which engages this part of the roving and the lateral projection which engages the severing apparatus need-extend only a short distance from the axis of the shaft and may easily be made strong and rigid.

The lateral projection of each shaft which engages the corresponding severing appara tus consists of a long crank 50 formed by Voffsetting the .portion of they shaft between its thrust bearing 35 and the plate 3l. In the running position of the shafts these cranks 5() extend upward as shownl in Figs. 5 and 8 andvat the right-hand side of Figs. 10 and 12, although not necessarily directly upward as shown in these figures;v while, when any shaft is in its severing position its crank 50 is inclined inward toward the adjacent shaft as shown at the leftehand side of Figs. 10 and 12.

The lateral projection of each shaft which vengages a roving beyond the outer drawing rolls is located on the portion of the vshaft outside its bracket 20. This portion of each shaft is offsetat r5,1, and provided with a radial arm 52. Then the shafts are in running position the offset portions 51 of the two shafts extend horizontally toward each other, while the arms 52 extend horizontally away vfrom each other. On the outer ends of the arms 52 are mounted the thread guides 18.y Each thread guide 18 includes a hub 53 mounted on the end of one ofthe arms 52, an arm 54 projecting radially from this hub, and an eye 55 at the outer end of the arm 54. Vhen the shafts are/in running position the arms 54 of the thread guides project horizontally forward beyond the outer ends of the shafts, bringing the, eyes 55 of the guides over two of the spindles X and in line with the axes of these spindles.

In order to provide for moving the thread guides 18 out of the way/.when the shafs are in running position and the cans Z and the bobbins Y are to be removed from the spindles X in dofling, the hubs 53 of the guides are mountedv on the arms 52 in such manner that they may be turned upwardly.

For this purpose the hubs 53 are mounted rotatably on the arms 512 and are secured thereto by means of pins 56 fixed in Vthe arms 52 and passing through arcuate slots 57 in the hubs 53. y

The offset portion 5l of each shaft is provided on its under side with a weight 58 which counterbalances the weight of the arm 52 and the thread guide 1S. In addition` each arm 52 is provided with an adjustableweight 59 secured to it by means of a set screw 60. The adjustable weights 59 may be so positioned that each actuating shaft is in equilibrium when in running position. Such equilibriunfi is, however, unstable, since because of the weight of the crank 50, the center of gravity of the entire shaft is above its axis. It is, however, dcsirable so to set rvthe adjust-able weights 59 that each shaft when in running position has a slight tendency to turn 4inward toward its severing position and thus to raise its arm 52 and its thread guide 18 toward 'the position shown .in ldotted linesA in Fig.

Cil

6. As soon as such turning begins, the weight of the crank tends to continue and to accelerate it. Each shaft is, however, so nearly balanced when in running position, that a very slight pressure exerted by a roving passed through the eye of the thread guide 18 serves to prevent the shaft from turning, as long as the roving is intact. lVhen, however, a roving breaks inV or beyond the drawing rolls and its pressure on the eye 55 is released, the

shaft

16 or 16 associated with the roving immediately turns inwardly to its severing position.

rlhis inward turning 'of a

shaft

16 or 16 on the breaking of its roving is utilized to actuate the severing

apparatus

15 or 15 to cut this roving in advance of the inner drawing rolls.

The severing apparatus-The

severing apparatus

15 or 15 of each unit includes turnably mounted severing means or 65. and a fixed thread guide or 70', adapted to retain a roving in position to be cut by the severing means.

rIhe thread guides 70 and 70 are alike. except that they are turned in opposite directions. rlhe form of a thread guide 70 is best shown in the perspective view, Fig. 11. Each guide is box-shaped, having two

transverse flanges

71, 72 and a longitudinal strap 73 connecting them. The front or inner flange 71 contains an eye 74 and a lateral passage 75 through which the roving may be `drawn into this eye. A guard 76 prevents the roving from slipping out of the eye 74. The outer or rear transverse iiange 72 contains an upwardly-opening recess 77' into which the roving may be dropped. A supporting flange 78 extends outwardly from the lower end of the rear transverse flange 72 and is attached to the top of the bar 22 by means of a screw 79, as best seen in Fig. 10.

Since each thread guide 70 extends over the reciprocatory rod R, the thread guides which are ordinarily mounted on the rod lt are replaced by special thread guides 17 which are formed so as not to interfere with the thread guides 70. Each thread guide 17 is provided with an attachment plate 80 'which is secured to the reciprocatory rod R by means of a screw 81 (see Figs. 7, 8 and 10). rlhe end portions of the attachment plate are turned over to provide flanges 82 resting on the top of the rod R, A tongue 83 extends from the upper edge of the eentral portion of the attachment plate 80, passes under the bar 22 and then upwardly behind the thread guide 70. The upwardly exten-ding portion 84 of the tongue 83 contains a recess 85 for the roving and provides a pair of ears 86 for guiding the roving into this recess.

When the frame is threaded, each roving is passed first through one of the thread guides 70 and then through Ione of lthe thread guides 17 before it is entered between the drawing rolls. It follows that although the path of a roving through the drawing rolls is constantly varied by the reciprocatien of the thread guide 17 through which it--passes, and although its path between its supply bobbin and its thread guide 70 is varied by the position on the bobbin from which the roving is being drawn, it is nevertireless true that the path of `each roving through its thread guide 70 remains always the same, being in a straight line from the eye .74 to the bottom of the recess V77. ltvv is in this unchanging part of its path that each roving may be cut by one of the turnable severing means 65 yor 65.

A common support 90 for the turnable severing means 65 and 65 o each pair of units is secured to the bar 22. Each support 90 has an upper flange 91 extending over the bar 22 and secured te it by means of a screw 92, a depending flange 93, and a lower flange 94. The upper and

lower flanges

91 and 94 contain two sets of aligned holes which form bearings for the turn-V able severing means 65 and 65. Each severing means includes a

shaft

95 and 95 mounted in these bearings, a bent arm 97 adjustably secured to the upper end of this shaft, a knife 98 at the outer end of this arm, and a crank arm 99 extending from the lower end of this shaft and provided with means for engaging the crank 50 of one of these actuating

shafts

16 or 16.

The

shafts

95, 95 are provided with thrust bearings 96 engaging the flange 91. Each lof these shafts extends at right angles to the corresponding

actuating shaft

16 or 16 and is spaced outwardly from its lactuating shaft.

Each knife 98 has two blades 100 similar to the ordinary safety razor blades and having their sharpened edges 101 crossed to provide a V-shaped slot 102.

The crank arm 99 of each severing means G5 or 65 extends in a direction substantially opposite to that in which the arm 97 of this severing means extends. rlhe engaging means 105 of each crank arm is adapted to engage the crank 50 of one of the

shafts

16 or 16 at any point along the length` of this crank, so as to transfer' a turning movement of this actuating shaft to the corresponding

shaft

95 or 95 of the severing means. Each engaging means 105 has the form of a long U-shaped

hook having sides

107, 108 einu bracing one of the cranks 50. Each hook 105 has sufficient depth so that its bottoni 109 does not interfere with the downward component of the movement of the crank 50 which occurs when one of the

actuating shafts

16 or 16 turns from its running to its severing position. Such downward component of the movement of the crank 50 does not of itself cause any movement of the crank arm 99, but the lateral or inward component of the movement of a crank which occurs when its actuating shaft turns from running to severing position brings the crank 50 into engagement with the side 107 of the hook 105, swinging the crank arm 99 inwardly to the position shown at the left in Fig. 10. The turning thus impart-ed to the

shaft

95 or 95 swings the arm 97 of this shaft outwardly. Conversely, when one of the

actuating shafts

16, 16 is moved from its severing position to its running position byY the resetting means hereinafter described, the crank 50 of this shaft engages the side member 108 of one of the hooks 105, swinging the crank arm 99 outwardly and the knife bearing arm 97 inwardly. As may be best seen in Fig. 10, the hook 105 is approximately perpendicular to the crank 50 when the crank is turned in, and is inclined to this crank when the crank is turned up in running position. The

sides

107 and 108 ofthe hook are, therefore` separated by a distance sufficient to enable them to embrace the crank 50 when the hook is inclinedfto the crank, as shown atthe right side of F ig.r 10.

The arm 97 of each severing means may be so adjusted on its

shaft

95 or 95 that the center of gravity of each severing means or 65 is above the axis of its

shaft

95 or 95 when the corresponding

actuating shaft

16 or 16 is in running position. It is not essential that the center of gravity be directly above the aXis, but it is desirable that it should be nearly so. It follows that when one of the actuating shafts is in running position and is, as has been said, approximately in a position of unstable equilibrium, the corresponding severing means 65 or 65 is in a position of unstable equilibrium, or nearly so. Thus, when theparts are in running position, each serving means is vbalanced so that it exerts no appreciable force on the corresponding actuating shaft and so does not increase the pressure of the thread guide 18 of its actuating shaft against a roving. It follows that the only pressure upon the rovings when the parts are in running position is that caused by the very slight tendency of the actuating' shafts to turn out of their running position, and this pressure is so little that it does not cause any increased tension or strain on the rovings. lVhen, however', a roving Vbreaks in or beyond the drawing rolls, -and one of the

actuating shafts

16 or 16 starts to turn inwardly, the corresponding severing means 65 or 65 is immediately moved out lof a position of equilibrium sol that the weight. of its arm `97 and knife 98 assists the turning of the actuating shaft in swinging the knife outwardly. Y

Vilhen a rovingbreaks, theoutward swing of the knife 98 Cooperating with this roving continues until the arm 97 on which this knife is 'mountedpcomes into Contact with the rear transverse flange 72 of one of the thread guides .or 7 0, as shown in full lines at the left-hand side of F 10. YWhen a` knife reaches this position, the sharpened edges 101 of its blades 100 lie in the path of the roving which is passing through the

thread guide

70 or 70, and the blades 100 are inclined to the roving with their inner or front surfaces at xan-obtuse angle thereto. Consequently, the travel of therroving under the pull of the drawing rolls draws it into the V-shaped slot 102 and against the sharpened edges 101 so that it is cut by them.

It shouldbe noted Ithat each severing means may be operated to cut a roving by theapplication of a very slight force. Three features contribute to this result. In the first place, each ,severing means is normally in a position of unstable equilibrium. Secondly, the final movement of each knife which brings its sharpened edges intocontact with a roving has a component in the direction of travel ofv the roving, so that the travel of the roving tends to assist,.and notto oppose, the final movement of the knife into severing position. And finally, the relative movement of the roving and the sharpened edges which causes thel actual .cutting of the roving iscaused by the travel of the roving and necessitates no movement ofthe knife.-

The resetting and Zoo/cmg meolzam'lsm. When an individual roving is to be rethreaded after it has broken, and has been cut, it is desirablethat the unit associated with this roving be reset and looked in running position until the threading has been completed. Furthermore, when the bobbins are ready for dothng, it is desirable to lock all the units in running position. A feature of the invention consists in providing both individual and common resetting and locking means for. the units.

An individual'resetting .and locking `means is provided for each pair of units. It consists of a bar 111 slidably mounted on the plate 31 of the pair of` units and having side arms112, 112` cooperating with

segmental recesses

113, 113 in the

discs

41, 41. The arms 112 of the slide bar 111 engage the outer side of the plate 31, and the slide bar has an overturned lower end running in a vertical recess 119 in the lower part of the plate, and tabs114 engaging the inner side of the plate. The slide bar 111 may be raised or depressed by means of a handle 115. 1t is retained against accidental movement by a spring 116 secured to the inner side of the plate 81 by means of a 'sore-w 117.

The segmental recesses 113, 113 in the

discs

41, 41 are so positioned that when an actuating shaft is in a severing position, the upper end 118 of its recess rests on one lill of the

side arms

112 or 112 of the bar 111, as shown at the left-hand side of Fig. 12. In order to reset a unit from severing into running position, the bar 111 is raised by means of the handle 115 so that the

side arm

112 or 112 of the bar which is in engagement with the dise of a unit in severing position turns the actuating sha-ft of this unit out wardly into running position. 1f one of the shafts of the pair is already in running position, the raising of the slide bar does not change its position, but serves merely to lock it in running position. After a broken roving has been rethreaded, the slide bar 111 cooperating with this unit is depressed so as to leave the actuating shaft of the unit free to turn into severing position in case the rov ing breaks,

The means for simultaneously resetting and locking all the units in running position comprises a slide bar 120 running the whole length of the spinning frame. This bar is slidably mounted in brackets 121 which are secured to the bar 21 by means of screws 122. rEhe slide bar 120 is provided with recesses 123 formed in its lower side and embracing the rear ends of the actuating shafts 16, and recesses 123 formed in its upper edge and embracing the rear ends of the actuating shafts 16. The

recesses

123, 123 are of sufficient width to permit a limited longitudinal movement of the slide bar 120 without bringing the sides of the recesses into Contact with the

actuating shafts

16 or 16.

1n order to lock all the units in ruiming position and at the same time to reset into running position any unit which may be in severing position, the slide bar 120 is moved in the direction of the arrow 124 to bring it into the position shown in Fig. 7. This brings the sides 125 of the recesses 123 into contact with the pins 40, and the sides 125 of the recesses 123 into contact with the pins l0', so as to hold the pins 4:0 against the inner ends 43 of the slots 42 inthe plates 31, and the pins l0 against the outer ends 411- of the slots l2,'thus retaining all the actuating shafts in running position. After clotting, the slide bar 120 is moved in a direction opposite to that of the arrow 124, so that its

recesses

123, 123 lie behind the slots 412, 42 of the plates 31, leaving each actuating shaft free to turn into its severing position in the case of the breaking of a roving.

From the above description it is apparent that the invention provides a very sensitive automatic mechanism for cutting in advance of the drawing rolls any roving which may break. As a result, the loss of spinning material which has heretofore resulted from the breaking of rovings in worsted spinning frames is entirely eliminated. At the same time labor costs are reduced, as the frames do not require an operator constantly in attendance to watch for broken rovings.

The severing means with its sharp-edged blades cuts a worsted roving notwithstanding the strength and length of the fibers of such rovings. The mounting of the actuating mechanism on an axis parallel to the direction in which the drawingrolls are adjusted results in producing a device which is not thrown out of balance by the necessary adjustment of the drawing rolls in the worsted fram-e. The specific device which has been described is, therefore, particularly adapted to worsted spinning and is, 1 believe, the first device capable of eliminating wastage in worsted spinning.

My invention is, however, by no means limited to its use in connection with worsted spinning, as many features of the invention are of importance in connection with the spinning of cotton and other Vrovings. Among these features are Athe ruggedness of the actuating mechanism obtained by giving it the formof a long turnable shaft extending across all the drawing rolls and having comparatively short lateral projections to engage a roving beyond the drawing rolls and to engage the severing apparatus in advance ef the drawing rolls; and the delicacy of operation obtained by the balancing of the severing means which relieves the actuating mechanism of all strains in its normal position and thus makes it possible to adjust the actuating mechanism to exert so slight a side pressure on a roving that no increased tension or strain on the roving is caused thereby.

Furthermore, it should be understood that the invention is not limited to the particular form and arrangement of the parts of the specic device which has been described, except in so far as kmay be specified in the claims which follow. ln the claims the ef;- pression severing means or severing mechanism7 is to be understood to include any means for severing the roving including clamping it so that it is torn apart as well as actually cutting` it as is done in the specilic device described.

TWhat I claim is:

1. In a spinning frame, the combination of a thread guide providing eyes engaging a roving at two spaced points between the supply bobbins and the reciprocatory guides in advance of the inner rolls, a sharp-edged knife, and means operative on the breaking of said roving in or beyond the drawing rolls to cause relative movement between said thread guide and the knife t0 bring the edge of the knife into a straight line joining the eyes of the thread guide.

2. In a spinning frame, the combination of means for guiding a roving through two fixed points, a sharp-edged knife, and means operative on the breaking of said roving in lli',

lll)

Lit)

CII

or beyond the drawing rolls to move said knife Vto bring its edge into the path of the roving` between said points.

3. ln a spinning frame, the combination of means for guiding a roving through two fixed points, a knife having a. sharp-edged blade, a mounting permitting movement of said knife between a normal position in which its blade is spaced 'from the roving and a severing position in which the edge of its blade is between said points and the front surface of its blade is at an obtuse angle to the roving, and means operative on the breaking of said roving in or beyond the drawing rolls to move said knife from its normal to its severing position.

4. In a spinning frame, the combination of means engaging a roving at two spaced points, a knife having two sharp edges forming a V-shaped severing slot, and a mounting for the knife permitting movement thereof between a normal positionV in which it is spaced from said roving and a severing position in which its edges are adjacent to said roving and so inclined to the roving that the travel of the roving draws the rovine' into the V-shaned slot to be cut by the edges.

5. A severing knife as claimed in claim t, in which the V-shaped severing slot is formed by the sharpened edges of two thin overlapping blades.

6. ln a spinning frame, the combination of a knife having a sharp edge, a mounting for said knife permitting movement thereof from a normal position in which its edge is spaced from a roving to a severing position in which its edge is in contact with said roving and so arranged that the final movement of the knife into its severinfy position has a component in the direction of travel of the roving, and means operative on the breaking of said roving in or beyond the drawing rolls to move said knife from its normal toward its severing position.

The combination with a spinning frame having adjustably mounted drawing rolls, of severing means adjustably mounted so that it may always be located justin advance of the inner drawing rolls, and substantially balanced actuating means engaging a roving beyond the drawing rolls and adapted, on the breaking of said roving, to actuate the severing means in any location thereof.

8. rlhe combination with a spinning frame having adjustably mounted drawing rolls1 of severing means adjustable with the inner drawing rolls, substantially balanced actuating means therefor turnably mounted on an axis parallel to the direction in which the drawing rolls are adjustable and engaging a roving beyond the drawing rolls,`and cooperating parts secured to said severing means and said actuating means respectively and adapted to remain in engagement with each other in all locations of the severing means.

9. rlhe combination with a spinning frame having adjustably mounted drawing rolls, of severing means adjustable with the inner drawing rolls, an engaging part on said severing means, and an actuating shaft mounted with itsv axis parallel to the direction in which the drawing rolls are adjustable, an arm on said shaft engaging a roving beyond the drawing rolls, and acrank on said shaft adapted toI engage the engaging part of the severing means in all locations of the severing means.

lO. The combination wvith, a spinning frame, of turnable means for severing a roving in advance of the Adrawing rolls, and a movable member so' engaging the severing means' as to prevent movement thereofin either direction out of a position of unstable equilibrium so long as said roving is intact and adapted to move said severing means out of equilibrium when said roving breaks.

ll. `rlfhe combination with `a spinning frame, of turnable means severing a roving in advance of .the drawing rolls, a turnable actuating member 'therefor*normally held nearly in a position ofunstable equilibrium by engagement with said roving beyond the drawing rolls, and a connection between the actuatingmember and the severing means arranged to set the severing means substantially lin Va lposition of unstableequilibrium when the actuating member is in its normal position, so that, while thejsevering` means= egertsyno force on the actuating member when the latter is in its normal position, it tiendspto assist the movement of the actuating member as soon as the latter is displaced from its normalposition.

12. Ina spinning machine and in combination with the drawing rolls thereof, an actuating shaft extending under the drawing rolls, means at the outer end of 4said shaft engaging a roving, a second shaftextending in advance of the inner drawing rolls and at an angle tothe actuating shaft, means on said second shaft for severing a roving in advance of the drawing rolls, and cooperative engaging means onvsaid shafts arranged to cause a; turning of the second shaft on a turning of the actuating shaft. I

13. In a stop-motiondevice for a spinning frame, the combination of two shafts extending at an angle to each other and each mounted for limited turning movement, a crank on one of said shafts, a crank arm on the other of said shafts, and a hook on said crank arm surrounding said crank.

lll. The combination with a spinning frame having adjustably mounted drawing rolls, of a severing device mounted for adjustinent with the inner drawing rolls and including a shaft, a crank arm on said shaft,

and a hook on said crank arm, a substantially balanced actuating shaft extending under all the drawing rolls and parallel to the direction of adjustment of the drawing rolls, and a crank on the actuating shaft adapted to extend through said hooi: in all locations of the severing means.

15. rlhe combination with a spinning frame, of means for severing a roving in advance of the drawing rolls, and mechanisin for actuating said severing means on thebrealring of said roving in or beyond the drawing rolls, comprising a turnably mounted shaft extending from the severing means to a point beyond the drawing rolls, a lateral projection near one end of said shaft engaging the roving beyond the drawing rolls, and a lateral projection near the other end of the shaft engaging the severing means.

16. In a spinning frame, actuating mechanisin for a roving-severing apparatus, coinprising a turnably mounted shaft extending across the drawing rolls in the direction approximately parallel to the path of a roving through the rolls, and lateral projections spaced longitudinally on said shaft, one positioned to engage the roving beyond the drawing rolls, and the other positioned to engage a. severing apparatus in advance of the d 'awing rolls.

17. In a spinning frame, actuating mechanism for a roving-severing apparatus, coinprising a turnably mounted shaft, means for limiting the turning of the shaft in each direction, a crank on the shaft which extends upward when the shaft is turned to its extreme position in one direction, a radial arm on the shaft which extends horizontally when the shaft is turned to its eX- treme position in said direction and is inclined upwardly when the shaft is turned to its extreme position in the other direction, a roving-engaging element on said arm, and a counterweight on said shaft slightly overbalancing the weight of said arm and said element.

18. In a spinning frame, actuating mechanisin for a roving-severing apparatus, comprising an inclined turnably mounted shaft extending under the drawing rolls, a radial arm on said shaft beyond the drawing rolls, and a roving-engaging arm extending horizontally outward from the free end of the -lirst arm when the first arm is in a horizontal position. f

19. The combination with a spinning frame, of a pair of turnable severing means mounted between two of the rovings in advance of the inner rolls and each having a severing arm, a pair of actuating meansV mounted between said two rovings, each weighted so that it tends to turn inwardly and each having an outwardly ext-ending arm engaging one of said rovings beyond 20. lin combination with a spinning frame,-

a pair of shafts mounted between two of the rovings in advance of the drawing rolls, a severing arm extending from each of said shafts, a pair of actuating shafts extendingy under the drawing rolls between 4said two rovings, a weight on each of said shafts tending to cause it to turn inwardly, an arm on each of said shafts extending outwardly therefrom and engaging one of said rovings b'wond the drawing rolls to prevent the ift from turning inwardly while said rovnig is intact, and a. connection between each of said actuating shafts and one of said first-mentioned shafts arranged to turn said shaft to swing its severing arm outi'vardly against one of said rovings when the actuating` shaft associated with said roving turns inwardly.

21. ln a spinning frame, the combination of a plurality of severing means positioned to sever the rovings in advance of the drawing rolls, a plu 1ality of turnab y mounted actuating shafts connected to said severing` means respectively, each shaft having a projection engaging a roving beyond the drawing rolls and being eccentrically weighted so that it tends to turn into position to actuate its severing means onA the brealnng of said roving in or beyond the drawing rolls, individual locking means for restraining any one of said shafts' against such turning, and collective locking means for restraining all such shafts against such turning.

22. in combination with a spinning frame, a plurality of pairs of severing means mounted between pairs of the rovings in advance of the drawing rolls, a plurality of pairs of actuating shafts extending under the drawing rolls between pairs of the rovings, a weight on each of said shafts tending to turn it inwardly, an arni on each of said shafts extending outwardly therefrom and engaging one of the rovings beyond the drawing rolls to prevent the shaft from turning inwardly while said roving is intact, a connection between each of said actuating shafts and one of said .severing means arranged to swingl it outwardly against one of said rovings when the one of the actuating shafts associated with said roving turns inwardly, individual locking means for restraining any pair of shafts against inward turning, and collective locking means for restraining all the shafts against each turn-` ing.

lou

23. .Actuating mechanism for a stop-motion device, 4comprising a plurality of shafts mounted .side by side and eccentrically weighted so that certa-in of them tend to turn in one direction and others in the other direction, means vfor limiting the turning of each shaft in each direction, an eccentric pin mounted on each shaft, those on the shafts tending to turn in one 'direction being above the vaxes of the shafts and those on the shafts tending to turn in the .other direction being below the axes of the shafts,and a slide bar having transverse engaging means which, in one position of the bar, engage all said pins and loc-k each shaft `against turning, and, in lanother position of the bar, leave each shaft free to turn under the influence of its eccentric weight.

.2.4. Actuating mechanism for a stop motion device, comprising a plurality of ecfcentrically weighted Shafts mounted side by side, a disc fixed on each of said shafts, a fixed plate adjacent to the disc of each shaft and containing 'an arc shaped slot, a pin in each vdisc extending into the slot in one of said plates so as to limi-t the turning movement of its shaft in each direction, a weight on keach shaft tending to cause turning thereof, .anda side bar extending across the shafts :and containing recesses which in one position of the bar are located opposite the slot-s in the plates and in another position of the bar .are located so as to engage the pins and retain them against movement in the slots.

25. Actuating mechanism for a stop motion device, comprising a plurality of pairs of shafts mounted side by side and eccentrica-lly weighted so that the shafts of each .pair tend to turn inwardly toward each other, a disc .fixed on each shaft, 'a vxed plate .adjacent to the discs of each .pair of .shaft-s and Vcontaining an arc-shaped slot -a-bove the l"axes of the shafts and an varcshaped slot below the axes of the shafts, a pin fixed in the 4disc of one shaft of each pair and extending into the one of the upper .arc-.shaped slots, a pin fixed .in the .disc of .the -other shaft of each pair and extending into one of the lower slots, .a verticallyslidable member mounted on each plate and 'having arms adapted to engage the pins `of a pair -of shafts and move such pins upwardly to the upper ends of their slots, .a .slide bar extending across all these shafts and having in its upper edge recesses located to lie opposite .the upper slots in all the plates a-nd in its lower edge recesses located -to lie opposite the lower slots in all the plates.

26. 'The combina-tion with a Worsted spinnin-g frame having a side rail, slotted crossbeams, and drawing rolls mounted on carriages adjustable on said cross-beams, of a ,bar extending between the carriages on which the inner rolls are mounted, rovingsevering .apparatus mounted on said bar, a. second bar extending between the crossbeams in advance of the roll carriages, brackets secured to the .side rail of the frame, and actuating shafts for ysaid severing apparatus extending between said .second bar and said brackets.

27. The combination with a spinning frame having drawing rolls `and a reciprocatory rod in .advance of the inner drawing rolls, of a fixed bar extending between the yinner drawing rolls and the reciprocatory rod, fixed thread guides mounted on said bar land extending over the reciprocatory rod, reciprocatory thread guides .secured t0 said reciprocatory rod and extending under said fixed bar and up behind said fixed guides, and means for severing a roving within any of said fixed guides.

28. In a stop motion device for spinning frames, 4severing apparatus comprising a yknife havin-g two sharp edges forming a V-shaped slot having an angle large enough to avoid gripping a roving in the corner of the slot, and means for positioning the Vknife with its edges adjacent to a roving and so inclined to the roving that the travel of the roving draws it into the V-shaped slot to be cut by they edges. l

29. The lcombination with a spinning frame having adjustably mounted drawing rolls, of severing means adjustably mounted so that it may always be located just in .radvance of the inner drawing rolls, and actuating means engaging the Vroving'beyond the drawing rolls and adapted, on the breaking..

of said roving, to actuate the severing .means in any location thereof.

30. The combination with 'a spinning frame having adjustably mounted drawing rolls, of severing means adjustable with .the inner drawing rolls, actuating means turnably mounted on an axis parallel to kthe direction in which the drawing rolls lare adjustable and engaging 4a roving .beyond the ldrawing rolls, and cooperating parts secured to said severing means and said `actuating means'respectively and adapted to remain in engagement with leach other in all locations of the severing means.

'31. In a stop motion for spinning frames, the combination with turnable severing means and a turnable actuator therefor, of a `connection between the severing means :and the actuator preventing independent ymovement thereof and arranged to Vset one of these parts substantially in a position of unstable equilibrium'when the other of these parts is placed substantially in the position vof unstable equilibrium.

32. The combination with a spinning frame, of means for severing a roving in advance of the drawing rolls 4and mechanism for actuating said severing means on the breaking of said roving in or beyond the drawing rolls, comprising a turnably mounted shaft extending from the severing means to a point beyond the drawing rolls, a thread guide mounted on said shaft near its outer end and positioned to direct the roving from the drawing rolls to a spindle, and a projection near the other end of said shaft engaging the severing means.

33. The combination with a spinning frame, of means for severing a roving in advance of the drawing rolls, and mechanism for actuating said severing means on the breaking of said roving in or beyond the drawing rolls, comprising an eccentrically weighted turnable shaft extending from the severing means to a point beyond the drawing rolls, a normally horizontal projection near one end of said shaft engaging the roving beyond the drawing rolls, and a projection near the other end of the shaft engaging the severing means.

34. In a spinning frame, actuating mechanism for a roving-severing apparatus, comprising a turnably mounted shaft extending across the drawing rolls in the direction approximately parallel to the path of a roving` through the rolls, and projections spaced longitudinally on said shaft, one positioned to engage the roving beyond the drawing rolls and to guide it directly to a spindle, and the other positioned to engage a severing apparatus in advance of the drawing rolls.

85. In a spinning frame, actuating mechanism for a roving-severing apparatus, comprising a turnably mounted shaft extending across the drawing rolls in a direction approXimately, parallel to the path of a roving through the rolls and at one side of said path, and projections spaced longitudinally on said shaft, one positioned to engage the roving beyond the drawing rolls. and the other positioned to engage a severing apparatus in advance of the drawing rolls.

36. In a spinning frame, actuating mechanism for a roving-severing apparatus, comprising a turnably mounted shaft extending across the drawing rolls in the direction approximatelv parallel to the path of a roving through the rolls, and projections spaced longitudinally on said shaft, one engaging the roving beyond the drawing rolls and the other positioned to engage a severing` apparatus in advance of the drawing rolls, and the shaft being eccentrically weighted so that it tends to turn in a direction to raise said first projection.

37. In a spinning frame, actuating mechanism for a roving-severing apparatus, comprising an inclined turnably mounted shaft extending under the drawing rolls, a normally horizontal arm on said shaft beyond the' drawing rolls, and a roving-engaging element on said arm.

38. In a spinning frame, actuating mechanism for a roving-severing apparatus, comprising an inclined turnably mounted shaft extending under the drawing rolls at one side of a path of a roving through the rolls, and a thread guide on said shaft positioned to direct the roving from the drawing rolls directly to a spindle.

89. In a spinning frame, actuating mechanisin for a roving-severing apparatus, comg rising a. inclined turuably mounted shaft extending under the drawing rolls, a normall'j7 horizontal radial arm on said shaft beyond the drawing rolls, and a roving-engaging arm extending horizontally outward from 'the free end of the first arm and adapted to be tipped upwardly to permit dofling the spindles.

40. rEhe combination with a spinning frame of a pair of actuating members mounted between two of the rovings, each weighted so that it tends to turn inwardly and each having an'outwardly extending arm engaging one of said rovings beyond the drawing rolls, and means for severing each of said rovings in advance of the drawing rolls when the actuating means associated with that roving turns inwardly.

4l. The combination with the spinning frame of a pair of turnable severing means mounted between two of the rovings in advance of the inner rolls and each having a seve 1ing arm adapted to swing outwardly against one of the rovings, and means for operating each of said severing arms when the roving with which it is associated is broken.

42. In combination with a spinning frame, a pair of actuating shafts extending under the drawing rolls between two of the rovings, each shaft being weighted so that it tends to turn inwardly, an arm on each of said shafts extending outwardly therefrom and engaging one of said rovings beyond the drawing rolls to prevent the shaft from turning inwardly while said roving is intact, and means for severing either of said rovings when the shaft associated with it turns inwardly.

43. In a spinning frame, the combination with a plurality of stop motion units each adapted to sever a roving in advance of the drawing rolls on the breaking of said roving in or beyond the drawing rolls, of an individual locking means for each unit, and collective locking means for Simultaneous lock-- ing of all said units.

44. In a spinning frame, the combination with a plurality of stop motion units each having a severing member movable into and out of contact with a roving in advance of the drawing, rolls, of an individual locking means for holding the severing member of each unit out of contact with a roving, and collective locking means for simultaneously holding all said severing members out of contact with the rovings.

45. In a spinning frame, the combination with a plurality of stop motion units each having severing means and an actuating member movable into and out of a running position in which it is in Contact with a roving beyond the drawing rolls, of individual locking means for holding the actuating` member of each unit in its running position, and collective locking means for simultaneouSly holding all the actuating members in running posit-ion.

46. Actuating mechanism for a stop motion device, comprising a plurality of shafts mounted side by side and eccentrically weighted so that alternate shafts tend to turn in one direction and the others in the other direction, means for limitingthe turn-l ing of each shaft in each direction, and means for simultaneously locking all the shafts against turning under the influence of their Weights.

47. Actuating mechanism for a stop motion device, comprising a plurality of turnable members mounted side by side, and resetting means adapted to engage all said members and to turn alternate shafts in one direction and the other shafts in the opposite direction.

48. Actuating mechanism for a stop motion device comprising a plurality of pairs of shafts mounted side by side and eccentrically Weighted so that the shafts of each pair tend to turn inwardly toward each other, an eccentric projection on each shaft, a vertically movable slide for each pair of shafts adapted to engage the projections of said Shafts and lock them against turning under the influence oi their Weights, and a slide movable horizontally across all the shafts adapted to engage the projection of each shaft and lock them all against turning under the influence oftheir weights.

49. The vcombination with a Worsted spinning frame having a side rail, slotted cross beams and drawing rolls mounted on carriages adjustable on said cross beams, of a bar extending between the carriages on which the inner rolls are mounted, rovingsevcring units, one for each roving, mounted on said bar, and means for actuating each roving-severing unit on the breaking of the roving with which it is associated.

In testimony whereof I have hereunto set my hand.

LOUIS B. HASBROUCK.