US455786A

US455786A - Stop-motion for knitting-machines

Info

Publication number: US455786A
Authority: US
Publication date: 1891-07-14
Anticipated expiration: 1908-07-14

Description

(No Model.) 4 Sheets-Sheet 1.

' D. C. BELLIS.

STOP MOTION FOR KNITTING MACHINES. No. 455,786. Patented Ju1y14, 1891.

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4: NORRIS PETERS 00., manrumm, msmnarcn u c 4 Sheets-Sheet 2.

(No Model.)

Patented July 14, 1891.

(No Model.) 4Sheets-Sh'eet 3.

D. O. BELLIS.

STOP MOTION FOR KNITTING MACHINES. No. 455,786. Patented July 14,1891.

I HIlllliiIiilll 11am i nil-I IIIIIII m: uunms nuns co., monruma, wummron, n, c.

(No Mod el.) 4 Shets-Sheet 4.

' D. C. BELLIS. STOP MOTION FOR KNITTING MACHINES- No. 455,786. Patented July 14, 1891..

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UNITED STATES PATENT OFFICE.

DAVID BELLIS, OF PHILADELPHIA, PENNSYLVANIA.

STOP-MOTION FOR KNITTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 455,786, dated July 14, 1891.

Application filed March 12, 1891.

To all whom, it may concern:

Be itknown that I, DAVID 0. Burns, a cit-izen of the United States, residing at the city of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have'invented certain new and useful Improvements in Stop- Motions for Knitting-Machines. of which the following is a specification.

The principal objects of my present in vention are, first, to provide simple, durable, compact, and efficientyarn or thread controlled mechanism for automatically throwinga knitting-machine out of gear when the supply of yarn or thread thereto is interrupted, for example, by the breaking or rupture of any of the strands of the yarn or the thread by exhausting the supply of the same on one or more of the bobbins or when the tension on any of the strands of yarn from any cause becomes unduly slackened; second, to so arrange the parts of the yarn-controlled stop mechanism as that the same, after having been automatically shifted in order to stop the knitting-machine, are automatically returned again to their respective normal positions without any man ual readjustment thereof and by the operation of starting the ma-. chine; third, to provide an automatic stopmotion mechanism that can be adjusted so as to be readily applied to or used in connection with knitting-machines of any of the usual sizes, types, or patterns; fourth, to protect the working parts of the stop-motion from dust and from becoming covered with the so-" called fly or fibers of thread that have become detached from the yarn or thread, and, fifth, to provide efficientand in expensi ve yarncontrolled devices especially adapted for use in connection with theabove-mentioned stop mechanism and adapted to slacken the th reads of yarn by cutting or severing them when ever the yarn or thread binds or tangles on any of the bobbins or whenever the yarn or thread is uneven or knotted.

My invention consists of a stop-motion for knittingmachines, comprising a sectional clutch in which each member thereof has an inclined contact-surface and one of said members rotated with the machine and the other or free member in its normal condition or posijcion frictionally driven by the rotating member, yarn-controlled devices for check- Serial No. 384,789. (No model.)

sliding and friction clutch in which one member thereof is driven withthe machine and the other is free,yarn-controlled levers for engaging the free member, means connected with one of said members for actuating said connecting device to disconnect the machine and main shaft, cams for shifting said levers out of engagementwith the rotating member, link connections attached to said connecting device, and cams for shifting the levers out of engagement with the clutch when the ma chine is started.

My invention further consists of a stop-m0- tion for knitting-machines, comprising a twopart clutch, yarn-controlled levers, threadguides, and a two-part coupling whereof one part is connected with the yarn-controlled levers and the other part with the thread-guides for permitting said thread-guides and levers to be shifted into and maintained in line with each other.

hlyinvention further consists of a stopqnotion for knitting'machines, comprising a twopart friction and sliding clutch and yarn-controlled levers provided with adjustable counter-Weights and swiveled eyes and adapted to engage and check one member of said clutch in order to actuate the same.

My invention further consists of a stop-inotion for knitting-machines, provided with a yarn-cutter comprising a thread-gage, a blade, and a counterbalanced lever provided with an eye and adapted to normally prevent the contact of the thread and knife edge or blade;

and my invention further consists of the improvements hereinafter fully described, and pointed out in the claims.

The nature and objects of the invention will be more fully understood from the following description, taken in connection with the accompanying drawings, forming part hereof, and in which- Figure 1 is a perspective view of a knitting- Ito machine, showing stop-motion mechanism embodying features of myinvention in application thereto. Fig. 2 is a View, partly in side elevation and partly in section, of i the upper portion of' a knitting-machine having the stop-motion mechanism applied thereto and showing a chain for actuating the belt-shipper to stop the machine, and also showing link connections for automatically readjusting the parts of the stop-motion by the operation-of starting the machine. Fig. 3 is an end elevation, partly in section, of Fig. 2, showing an endless band for transmitting rotary motion from the driving-pulley of the machine to the stop-motion mechanism. Fig. 4 is a top or plan view of Fig. 2, showing two vertical posts attached to the bed-plate of the machine for supporting levers and links connected with the stop-motion mechanism and with the power-shifting appliances of the machine. Fig. 5 is an elevation, partly in section, of a two-part coupling whereof one part is connected with the center shaft of the dial-plate and is provided with a hand-wheel for adjusting said plate and the other part is connected with the yarn-controlled levers of the stop-motion mechanism. Fig. 6 is a view, partly in elevation and partly in section and on an enlarged scale, of the upper portion of the stop motion mechanism, showing a housing containing a rotatable twopart friction-clutch, whereof one member is afforded a range of axial motion and the other member is free and is held against end play, and whereof. each member is provided with an inclined contact-surface, also showing yarn-controlled levers for engaging projections on the free member and means for rotating the other member. Fig. 7 is a section on the line a: as of Fig. 6, showing guides for directing the yarn over the periphery of the housing containing the two-part clutch. Fig. 8 is a view illustrating in side elevation and in perspective the detail construction of the yarn-controlled levers, and showing an adjustable counter-balance and a swiveled eye attached to said levers. Fig. 9 is a view, partly in elevation and partly in section, of the upper portion of a modified arrangement of the two-part clutch and of the yarn-controlled levers, showing the strands of yarn passing through suitable recesses formed in the body of the stop-motion mechanism. Fig. 10 is a section on the line y y of Fig. 9, showing cams for returning the yarn-controlled levers to their normal positions, and also showing a cam-carrier for shifting the same. Fig. 11 is an elevation, on an enlarged scale, of one of the yarn-controlled levers, showing a modified form of adjustable counter-weight,

and also showing an eye attached. rigidly to the lever. Figs. 12, 13, and 1 1 illustrate in perspective and in plan and elevation yarncutters provided with a thread-gage, a movable blade, and a counterbalanced lever having an eye and adapted to actuate the blade; and Fig. 15 is a perspective view of a modified form of yarn-cutter, showingv a threadgage, a fixed blade, and a counterbalanced lever for supporting the yarn and for permitting it to contact with the blade.

Referring to the drawings, especially to Fig. 1, a is a knitting-machine of any preferred construction and provided with fast and loose pulleys a and a or equivalent power-applying devices. I) is the stop-motion mechanism adapted to throw the power appliance out of gear whenever a thread breaks or becomes unduly slack, and the same is supported by means of a frame I), attached to the bed-plate of the machine, and by means of a shaft preferably supported by the dialplate. 0 is a bobbin-frame provided with a bobbin-shelf c and a thread-rack 0 d is a yarn or thread cutter attached to the yarn or thread rack 0 and adapted to slacken the thread by cutting or severing it whenever the yarn is uneven or flocky or is subjected to an undue tension. In the drawings only one thread-cutter is shown; but it will be understood that in practice there are as many threadcutters as there are threads, although the thread-cutters may, if preferred,be dispensed with, in which case, however, the efficiency of the stop-motion, as a whole, is greatly dimin ished.

Referring now to Figs. 1, 2, 3, t, and 5, b is a two-part coupling, whereof one part b is attached to the dial-plate and the other part b is attached to the shaft 6 so that the dialplate 19 may be shifted .in order to adjust the stitches of the machine without moving the thread-carriers b whereby the said threadcarriers b and thread-guides a? will be maintained in line with each other. The collar b housing I), and thread-directing wheels or spreaders hm are keyed or otherwise attached to the shaft 12 b is agrooved-sleeve mounted loosely on the shaft 19 and provided with a pulley 11 b is a spiral spring interposed between the collar 1) and a gasket Z9 in order to support the sleeve b, so that it is free to be rotated and is afforded a range of axial motion. a is a lever having a bifurcated extremity e in engagement with the grooved sleeve '1) and pivotally attached at or near the center thereof to a bracket I), supported by the frame I). It may be remarked that the bracket 1) is made in two sections hinged together by a set-screw, so that the extremity of the bracket may be shifted and then clamped to place, for a purpose hereinafter described. device attached to the free extremityof the lever e by means of an adjustable sliding connection e and to an arm 6 by means of a turn-buckle (a The arm 6 is attached to a bell-crank lever 6 connected with the ma-' chine and adapted to control the belt-shipper 6 so that when the stop-motion mechanism is thrown into operation, in the manner hereinafter described, the grooved sleeve b is shifted axially downward and actuates the lever 6, thereby .causing the chain e to pull ICC IIO

e is a chain, rod, or equivalent the arm a upward, and the. motion of the arm 0 causes the belt-shipping appliance to. shift thebelt from the fast pulley a onto the loose pulley a thereby permitting the machine to stop. It maybe remarked that the sleeve 1) is rotated by means of an endless bandf, passing over guide-pulleysf', supported by the frame I), and passing around the pulley (9 and also around a pulley f attached to or formed integral with the driving or fast pulley a of the machine, so that as soon as the driving-belt of the machine is shifted from the fast to the loose pulley, the machine and stop-motion are permitted to stop. I)" is a lever protruding through a slot in the housing 12 and adapted to return the parts of the stop-motion mechanism to their normal positions whenever the machine is started. This lever b" is'pivotally connected at one extremity to an oscillating lever g by means of an adjustable link g. The other extremity ofthe oscillating leverg is connected with the belt-shipping appliance by means of a slotted link 9 so that whenever the-machine is being started the belt is first shifted partially onto the tight pulley and starts'the machine, and then as the belt is shifted farther onto the pulley the slotted link g comes into engagement with the shipping device and transmits motion to the levers g and b", thereby causing the parts of the stop-motion to be automatically and positively readj usted,

every time the machine is started.

It may be remarked that inasmuch as all the parts for connecting the stop-motion mechanism with the machine, including the bracket b, are adjustable and can be made larger and smaller or otherwise shifted in order to accommodate them to difierent sizes and patterns of machines it follows that the stopmotion may be applied to any preferred type or style of knitting-machine by the simple operation of attaching the frame b to the bed-plate of the machine, the arm 2 to the belt-shipping device, and the shaft 11 to a threaded projection, which in most machines is formed upon the dial-plate b and then adjusting the length of the various levers so as to accommodate them to the machine.

Referring now to Fig. 5, b is one member of the coupling b and is attached to the shaft 12 by means of aset-screw Z1 and to the dialplate I) in any convenient manner. This member 17 is provided with a hand-wheel b for permitting of its rotation, and with a serrated contact surface b b is the other member of the coupling b and is keye'd or otherwise attached to the shaft 11 This member 11 is provided with a serrated contact-surface b adapted normally to contact with and engage the serrated surface b so as to connect the dial plate and the shaft b together.

.In use the two parts b and 19 0f the coupling 11 may be uncoupled by loosening the setscrew Z7 whereupon the dial-plate b may be raised or lowered by means of the hand-wheel b or the thread guides and the threadcarriers b may beradjusted in line with each other without causin'g the yarn to become tangled.

Referring now to Figs. 6, 7, and 8, h is one member of a two-part clutch and is attached to or formed integral with the sleeve 1), and is adapted to be revolved in the lower portion of the housing 19 This member h is provided with an inclined contact-surface h, for a purpose to be presently described. collar keyed orotherwise attached to the shaft b and located above the member h, in order to prevent the latter from being shifted upward. '11 is the other member of the two-part clutch and is mounted so as to h isa.

be adapted to rot-ate freely onthe shaft 12 l but is prevented from end-play by means of the collars 71 and 12 This member 2' is provided at the upper portion thereof with a rowof projections and at the lower portion thereof with an inclined contact-surface 1' adapted to engage the contact-surface h, so as to cause the member 7b to normally drive the member 41 by frictional contact therewith. j are counterbalanced yarn -controlled levers pivotally supported by a flange formed on the collar 12 and located within the housing 17 but having one of their respective extremities extended through suitable slot-s therein. These levers j are located adjacent to the thread carriers 5 and are adapted to be retained normally out of engagement with the projections 2' of the free member 1' by ihetension of rthe thread. However, in use whenever the ten sion of any of the threads is reduced, so that one of the threads becomes slack, oneof the levers j engages one of the projections 2' and thus checks the rotation of the free member '21, whereupon the positively-rotated member h IOC is shifted by means of the inclined surfaces h and i downward, and thus shifts thelever e and actuates the belt-shifter 6 so as to stop the machine and permit the member h to come to rest, as has been hereinabove explained. the housing I)" and supported upon a flange attached to the collar This cam-carrier 7c is provided with cams k, adapted to contact with and return the levers j to their normal positions, and is attached to the arm I)", so that the motion of the arm I) causes all the leversj to be lifted out of engagement with the projections 2T before the. machine is started, and also causes the cams 70 to be shifted from beneath the lever j before the machine is in operation. j are externallythreaded counter -weights adapted to be screwed through suitable apertures in the levers j, in order to permitof the adjustment is is a cam-carrier located within of the latter-that is to say, in order vto increase or diminish the degree of slack in the thread requisite to cause the levers to operate to stop the machine. fare 8-shaped swiveleyes pivotally attached to the levers j, as illustrated in Fig. 8. Theobject of these swivel-eyes is .to. permit the levers to be inserted through smaller slots in the housing 1) than would be possible if the eyes were attached rigidly to the levers, it of course being understood that the object of the housing b The construction and arrangement of the parts of the stop-motion illustrated in Figs. 9

. and are the same-as above described with reference to Figs. 6 and 7, with the following exceptions: The housing I) is dispensed with and the collar 19 is continued downward betweenthe shaft 12 and two-part clutch and is connected with the gasket I2 by means of elongated pins t. The gasket is provided with an extension 77, that supports the under side of the pulley Z1 so that the downward motion of the lower member of the two-part clutch is transmitted to the grooved sleeve 1), it being understood that the pins i are long enough to permit the gasket 5 to be shifted downward far enough to operate the lever and parts connectedtherewith without becoming. disengaged from the "collar 11 Moreover, the levers j are turned aroundand the thread-"carriers b are dispensed with, the

threads beingled to the machine through suitable eyes formed in the guides b through the eyes formed in the levers j, and then through suitable eyes formed in the'collar b and gasket b The outer extremity of the collar b is upwardly flanged, so as to form ways for the cam-carrier 7c, and the upper edge of this flange is provided with slots in which the extremities of the levers j work, so that the extremities-of these levers are prevented from being shifted laterally and are allowed a range of vertical movement. It will be understood that in the modified form of stop-motion the swivel-eyes y" may be dispensed with and rigid eyes 3' as illustrated in Fig.11, may

be employed in lieu thereof.

In Fig. 11 is also illustrated a modified form of adjustable counter-weight 9' that is attached at one'extremity thereof to the lever j by means of a set-screw j so that it can be adjusted toward or away from the lever, as shown in dotted lines, and then clamped to place.

Figs. 12, 13, and 14 illustrate thread-cutters adapted to be attached to the thread-rack 0 Fig. 1, by means of set-screws d, and are pro vided, respectively, with a thread-gage d and counterbalanced thread-lever d having a hook or eye cl for the passage of the thread. I

In Fig. 12 the cutter is provided with a plate d having a slot (1 formed therein for the. passage of the thread, and with a wedge shaped blade'd attached to or formed integral with the counterbalanced lever cl and extending below the hook or eye (1 thereof, so that whenever a knot or enlarged portion of the thread contacts with and is caught by the thread-gage d or whenever the thread does not feed properly from the bobbin, the thread is drawn tight by the machine and.

shifts the lever d and blade (I downward, so

that the latter cuts or severs the thread between the slot- (1 andth'e eye of the lever (1 In Figs/113 and let the lever d is provided witha depending lug (1 which engages a slot d", formed in the shank d of a pivotally-supported circular blade (1 so that when the thread, which is passed over the stud c1 that supports the levers (Z is drawn tight, it causes the lever d to be drawn downward, as before, and this downward motion of the lever causes the blade (1 to be rotated into contact with the thread, whereby the latter is severed just above the plane of the thread-gage.

The construction and arrangement of parts of the modified form of cutter illustrated in Fig. 15 are as above described with reference to Figs. 12, 13, and 14, with the following exceptions: The wedge-shaped blade 01 is fixed and the eye d of the lever d normally supports the thread above the same, so that when the thread is drawn tight thelever d is rotated and permits the bight of the thread to come into contact with .and be drawn along the edge' of the blade, so as to be severed thereby.

' The mode of operation of the hereinabovedescribed stop-motion mechanism is as follows: The threads are led from the bobbins upward through the eyes of the counterbalanced levers d and then to the machine, and the counterbalancing devices on the levers d are so adjusted as that the levers d prevent the thread from contacting with the blades when the tension of the thread is normal or does not exceed a predetermined amount.

However, Whenever the tension of anyone of the threads is increased for any causefor example, by the failure of the bobbin to unwind properly or by the detention of one of the threads by an enlargement thereof being caught between the jaws of one of the thread-gages d ?the counterbalanced lever d is shifted and causes one of the blades to cut or sever the tight thread. After passing through the cutters the threads are led past the spreadersb through the eyes of the yarn controlled levers j and past the two-part clutch to the thread-carrier b of the machine, and the counter-weights are so adjusted as that the levers j are held out of engagement with the two-part clutch when the 'threadsare under normal tension or are not unduly slack. However, when the threads are slackened, the levers j are permitted to engage the two-part clutch, and thereby cause the machine to be stopped, so that whenever a thread is cut or severed by the cutters d or is otherwise broken it becomes slack and actuates the stop-motion mechanism, which in turn causes the machine to be thrown out of gear.

It will be obvious'to those skilled in the art to which my invention relates that the cutters and stop-motion mechanism maybe employed separately and in connection with various 'machines other than knitting-machines, and that modifications may be made in the details of the construction and arrangement of the parts without departing from the spirit of the inventlon, and hence I donot limit myself to the exact construction and arrangementherein described and illustrated in the accompa-.

nying drawings; but,

Having thus described the nature and objects of my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A stop-motion for knitting-machines,

consisting of a sectional clutch having inclined contact surfaces, one member being positively rotated with the machine and the other member frictionally driven by said positively rotated member, devices contacting Y sisting of a two-part sectional clutch whereof each member has an inclined contact-surface, one member being rotated with the machine and permitted a range of axial'motion and the other member'rotatable and normally in contact with the driven member, projections on said rotatable member, counterbalanced levers controlled by threads and adapted to engage said' projections, and power-applyin g devices controlled by the axial motion of said positively-driven member, substantially as and for the purposes set forth.

3. Astop-motion for knitting-machines,consisting of a sectional clutch whereof each member has a serrated contact-surface, one member rotated with the machine and afforded a range of axial motion and the other member rotatable and held against end-play, elastic means for-maintaining said members normally in contact with each other, projections on said rotatable member, levers controlled by threads and supported by a fixed carrier and adapted to engage said projections, and means for connecting in operation said'rotating member and power-shifting appliances, substantially as and for the purposes set forth.

4. The combination, in a stop-motion, of a rotatable member", means for frictionallyrotatin'g the same, projections on said member, yarn-controlled levers for engaging said proj ections, cams for lifting said yarn-controlled levers, and means for shifting said cams, substantially as and for the purposes set forth,

5. The combination, in a stop-motion, of counterbalanced levers controlled by threads, camstfor returning said levers to their normal positions, and means for shifting said cams, substantially as and for the purposes set forth.

6. The combination, in a stop-motion, of a rotating memberprovided with projections, balanced levers controlled by threads and adapteg to engage said projections, a camca-rri'e foamsattached thereto and adapted to shift said levers, a power-shifting appliance, and means connected with said power-shifting appliance and cam-carrier, the construction being such that when the power appliance is shifted to start the machine the levers'are automatically returned to their normal positions, substantially as and for the purposes set forth.

. 7. The combination, in a stop-motion, of a central shaft, a collar keyed thereto, a housing attached to said collar, a two-part rotatable clutch whereof both members are located in said housing and provided with inclined con tact-surfaces and one member'main'tained against end-play by a collar and the other permitted a range of axial motion, a spring contacting with said axially-movable member for retaining the tvronnembers normally in contact with each other, a pulley on said amallymovable member, projections on said rotatable member, means for rotating said pulley, levers adapted to engage said projections and extending through slots in said housing, thread-guides on said housing, spreaders on said shaft, and means engaging said axially-movable member and adapted to actuate a power-shifting appliance, substantially as and for the purposes set forth. V

8. The combination, in a stop-motion, of a central shaft, a housing supported thereby, a two-part rotatable clutch whereof both members are provided with serrated contact-surfaces, one member being supported against end-play and the other permitted a range of axial motion, means for rotating said members, the one positively and the other frictionally, projections on said rotatable member, levers workingin slots in said housing and adapted to engage said projections, threadguides attached to said housing, and means. engaging said axially-movable member and adapted to actuate a power-shifting appliance, substantiallyas and for the purposes set forth.

9. The combination, in a stop-motion, of a shaft, a collar having a flange, a housing attached to said collar, a two-part rotatable clutclrwhereof both members are provided with inclined contact-surfaces normally in contact with one another, one member supported against end-play and the oth er permitted a range ofaxial motion, means for rotating said members, thread-controlled counterbalanced levers attached to said flange and adapted to engage the first-mentioned member, a cam-carrier supported by said flange,

cams attached thereto and adapted to engage said levers, thread-guides, means engaging said axially-movable member andadapted to actuate power-shifting appliances, and connections engaging said cam-carrier and powershifting appliances, substantially as and for the purposes set forth.

if). The combination, in a stop-motion, of a shaft, a housing supported by said shaft, a sectional clutch whereof both members are provided with inclined contact-surfaces normally in eontactwith one another, means for comprising a driving-shaft, a device for conrotating one of said members and threadcontrolled counterbalanced levers attached to a flange and adapted to engage the other of said members, a cam-carrier and cams for engaging said levers, means engaging said positively-rotated member and adapted to actuate power-shifting appliances, and connections engaging said cam-carrier and powershifting appliances, substantially as and for the purposes set forth.

11. A stop-motion for knitting-machines,

necting and disconnecting the machine therewith, a two-part sliding and friction clutch whereof one member driven by said connecting device is afforded a range of axial motion and the other member is normally driven by frictional contact therewith, yarn-controlled levers for engaging said frictionally-driven member, a pivotally-supported lever adapted to be actuated by the axial motion of said member for shifting said connecting device to disconnect the machine and main shaft, cams for shifting said levers out of engagement with the frictionally-driven slotted member, and link connections attached to said connecting device, and cams for shifting the yarn controlled levers out of engagement when the machine is started, substantially as set forth.

12. A stop-motion for knitting-machines, comprising a driving-shaft, a device forecounecting and disconnectingthe machine therewith, a two-part sliding and friction clutch whereof one member is driven by said connectin g device and is afforded a range of axial motion and the other member is normally driven by frictional contact therewith, yarncontrolled levers for engaging said frictionally-driven members, a pivotally-supported lever having one extremity engaging a circumferential projection on said axially-movable member, a chain or rod attached to said lever and connecting device, cams for shifting said levers out of engagement with the frictionally-driven members, and links attached to said connecting device bya slotted connection and to said cams, substantially as and for the purposes set forth.

13. The combination, with a knitting-machine having power-shifting appliances, of a shaft attached to the dial-plate, a frame attached to the bed-plate, stop-motion mechanism comprising a two-part friction and slidin g clutch, cams, and thread-levers supported by said shaft, means for rotating one of said members with the machine, and two sets of levers supported by said frame, one of said sets of levers connected with said power-shifting appliance and with a clutch for throwing the machine out of gear, and the other set of levers connected with said power-shifting appliance and cams for automatically readjusting said stop-motion mechanism, substantially as and for the purposes set forth.

14. The combination, with a knitting-machine having a main shaft provided with fast and loose pulleys, of a belt for actuating the same, a belt-shifter, a shaft and frame supported by the machine, rotating stop-motion mechanism comprising a two-part sliding and friction clutch, counterbalanced thread levers, and cams supported by said shaft, a band passing over pulleys on said frame and engaging said fast pulley and one member of said clutch, and two sets of levers supported by said frame, whereof one set engages said shipper and positively-driven member and the other set engages said cams and shipper, substantially as and for the purposes set forth.

15. The combination, with a knitting-machine having a main shaft and power-shifting appliances therefor, a stop-motion comprising a two-part sliding and friction clutch, counterbalanced levers normally retained out of range of said clutch by the threads, and earns for readjusting said levers, means engaging said power appliance and one of said members for rotating the latter, and two sets of levers, whereof one engages said shifting appliances and the clutch and the other said cams and shifting appliance, substantially as and for the purposes set forth.

16. The combination of a knitting-machine having power-shifting appliances, a stop-motion mechanism, a frame adapted to be attached to the bed-plate of the machine, and two sets of slotted adjustable levers attached to said frame by adjustable connections to permit of the application of the 'frame and stop-motion to machines of different sizes or types, substantially as described.

17. The combination, with a knitting-machine having a dial-plate and thread-carrier, of a two-part coupling whereof one part is attached to the center shaft of the dial-plate and the other part to a stop-motion having thread -levers, the construction being such that said thread carriers and levers may be retained in line with each other when the dial-plate is adjusted, substantially as and for the purposes set forth.

18. The combination, with a knitting-machine having a dial-plate and thread-carriers, of a two-part coupling whereof both parts have toothed and interlocking contact-surfaces, one part being keyed to'ashaft carrying stop-motion mechanism having threadlevers and the other attached to the dial-plate and provided with a set-screw for engaging the shaft, the construction being such that such thread carriers and levers may be retained in line with each other, substantially as and for the purposes set forth.

19. The combination, with a knitting-machine having a dial-plate and thread-carrier, of a two-part coupling whereof both parts have toothed and interlocking contact-surfaces, one part being keyed to a shaft and the other attached to the dial-plate and provided with a hand-wheel and with a set-screw for engaging said shaft, and stop motion mechanism supported by said shaft and provided with thread -guides, the construction being blade and eye,

such that said thread carriers and levers may be retained in line with each other, substantially as and for the purposes set forth.

20. The combination, in a stop-motion for knitting-machines, of a rotatable member, means for rotating said member, and threadlevers provided with. adjustable counterweights and adapted to engage and check said member, substantially as and for the purposes set forth.

21. The combination, in a stop-motion for knitting-machines, of a rotatable member, means for rotating said member, and threadlevers provided with adjusting-screws and adapted to engage and check said member, substantially as and for the purposes set set forth. r

22. The combination, in a stop motion mechanism for knitting-machines, of a slotted housing provided with thread-guides, threadlevers for controlling said stop-motion mechanism and extending through said slots, and swiveled eyes attached to said levers, the construction being such that said levers may be inserted through the slots and the swiveleyes turned into position, substantially as and for the purposes set forth.

23. In a knitting-machiue, a yarn-cutter consisting of a thread-gage, a blade, and a counterbalanced lever provided with an eye and adapted to normally prevent contact of the thread and blade, substantially as and for the purposes set forth.

24. In a knitting-machine, a yarn-cutter consisting of a thread-gage, a slotted plate, and a counterbalanced lever provided with a substantially as and for the purposes set forth.

25. In a knitting-machine, a yarn-cutter consisting of a thread-gage, a slotted plate, and a counterbalanced lever wedge-shaped blade and with an eye located above the cutting-edge of said blade, substantially as and for the purposes set forth.

26. In a knitting-machine, a yarn-cutter consisting of a thread-gage, a pivotally-supported lever provided with a wedge-shaped blade and with a thread-hook located above provided with a.

the cutting-edge of said blade, and an adjust able counter-weight 011 said lever, substantially as and for the purposes set forth.

27. The con'ibination of a knitting-machine, yarn-cutters comprising a th read-gage, ablade,

- and a counterbalanced lever, a stop motion comprising a two-part frictional and sliding clutch, and counterweighted thread -levers, and means actuated by said clutch for shifting the power from the machine, substantially as and for the purposes set forth.

= 28. The combination of a knitting-machine, yarn-cutters, a stop-motion mechanism comprising a two part frictional and sliding clutch, and thread-levers, and means, actuated by said clutch for shifting the power from the machine, substantially as and for the purposes set forth.

29. The combination of a knitting-machine, a frame attached thereto, a bobbin-shelf and thread-rack on said frame, thread-cutters on said rack, a stop-motion mechanism comprising a two-part sliding and friction clutch, and thread-controlled levers, and means actuated by said clutch for shifting the power from the machine, substantially as and for the purposes set forth.

30. The combination of aknitting-machine having power-shifting appliances, a stop-motion mechanism, a frame adapted to be attached to the bed-plate of the machine and provided with n two-part adjustable bracket, and adjustable levers pivotally attached, respectively, to said frame and bracket,whereby the parts of the stop-motion mechanism are returned to their normal positions, the con struction being such that the frame and levers may be applied to machines of different sizes, types, or kinds, substantially as and for the purposes set forth.

In witness whereof I have hereunto set my signature in the presence of two subscribing 90 witnesses.

DAVID C. BELLIS.