US876211A - Stopping mechanism for sewing-machines. - Google Patents

Description

No. 876,211. PATBNTED JAN. 7, 190B.

- H. 0. MILLER.

STOPPING MECHANISM FOR SEWING MACHINES. APPLICATION FILED MAY 26, 1905. RENEWED JULY 31, 1906.

4- SHEETSSHBET l.

c ulnucufoz wi hwozm PATENTED JAN, 7, 1908.

H. G. MILLER. v STOPPING MECHANISM FOR SEWING MAGHIN APPLICATION FILED MAY 20. 1905. RENEWED JULY 31, 1906.

4 SHEETS-SHEET 2.

18 i (messes PATENTED JAN. 7. 1908.-

H. C. MILLER. STOPPING MECHANISM FOR SEWING MACHINES.

APPLICATION TILED MAY 26, 1905. RENEWED JULY 81, 1906.

4 SHEETS-SHBET 3.

* @uoentoz 23K twzoseo PATENTBD JAN. '7, 1908.

H. (:JMILLBR. STOPPING MECHANISM FOR SEWING MACHINES.

I APPLICATION FILED HAY 26. 1905. RENEWED JULY 31, 1906.

4 BHBETB-SHEET'4.

(Ju-ucufoz hwoaao ploy power sliiitiin mechanism, cm..nect

the step at at time hen the j voted, end nltlni'rmvn from the nine? I-IENRY OnMILLiEl-v, O1 WATERFORD, NEW YORK STOPPING- MEGHANISM FOR SEXV'INGJ/IACHINES.

Application filed May 26. 1905. Serial No. 262.401- Renewed July To all whom it may ('ONCE'I'H.

Be it known that l, HENRY Ml'im zn, 2L citizen of the United States, residing in Weterfoid, in the count, of Snmtogn and State of New York, have invented new and useful Improvements in Stop Mechanism, of nhich the following is u specification.

This invention relates to iniprowinents in stopping mechanism for sowing n'nichincs.

Numerous attempts have been. made to produce 3. stopping mechanism, which will positively stop the needle of e sening ma chine above the inhi'ic without jarring or causing undue wear-on the stitching mechanism, irrespective of the speed of ma chine. All such constructions hnon n to me. foil absolutely to meet the practical requirements of the trade, 'yninmril' because the final StO)pll1g means comes lino operation ith such force as to vibrate, and hence disarrange the delicate and inirimitc parts of the sewing mechanism. Under these conditions the final step will, in durtiinc, lulu place at a period n hen the needle is donn in the material.

According to my present iiniention, i chi ed to and cooperet .g: with a yielding rctnrder and o stop, the latter designed to he thrown into the path oi it dog, which thrown out of the path of the stop by contriiugel force, and into the path of mid stop by a spring or the like. The olrjcct oi thesielements when stopping the lug; nutchine, is to throw the pmxer, and in tighten n. flBXlilkl" rclmde: on v. light to gradually same time poelfion :1 stop so that nlroii speed of the'tight policy has fallen helm; a predetermined speed, the dog is ectnzited to encounter the stop to positively and iinziil c bring the sening mechanism to it stands-"ll.

'l he mechanism is tnned and gno'gmrtn red,

that the retorder ill cilectinilly reduce speed oi the light pulley, and the Q engine-u s we oiimnrily adopted for use .i'i ining;

Specification of Letters Patent.

Iatented Jan. 7, 1908.

31.1908. sane no; 328.620.

'tion of my invention, illustrating the stopping mechanism thrown to pern'nt the sowing mechanism to operate. Fig. 2 is o partiel side elevation of o sewing nn'lclnne, with at part oi the stopping mechanism in section,

and thrown to step the sewing mechanism. 1 3 is n plan View of the stopping rncehsin, positioned, parts being in the position shonn in Fig. 1. Fig. 4 is on end elevation nith the lust and loose pulleys removed. Fig. 5 is on end elevation. Fig. 6 is a face view of the fest pulley, illustrating the dog. Fig. 7 :1 detail 'i( .1'spo 'tive view of the stop lug and its collztl. Fig. 8 is it view of a inedilicolion.

'lhc numeral 1 indicates a sowing machine,

2 the power shalt, and 3 a. hearing for the some. Mounted fast on the shelt 2 by a. screw s e. pulley 4, having huh 5 coincident with homing S; and a. sleeve 6. The

circumference of" pulley 4, is grooved to formn friction pulley 7, and adjacent the groove a. second out much smaller groove 8, to receive the power belt. in a recess 9, of pulley -il, is a dog 10, pivotcdetll, having on cngaging point 12, and n. spring l3, which forces the point toward the huh 5.

A loose pulley 15 is mounted on the sleeve 6, and it is provided with shallow groove 16, edjnocn t groove 8, of the test pulley. A sleeve 17 on shaft 2, bears against the pulleys 15, to retain it in proper position, and a nut 18 holds the sleeve in place. 1

A collar 19 having flanges 19 to form :1. groove, is mounted to slide on the hearing 3, and huh 5, and extending from the (seller is or stop lug 30, which cooperates with the dog 9, to bring the sening n'icchenism to o final stop. An itlll'l 2] depends from the eoller, end is formed with on opening throng-3h whieh o yielding belt passes.

24 indicates a belt shifter, provided with two arms 20? and 21 connected. by a, bolt 25, i'or convenience in asscinhii ig ond'disnmntlin the parts. Ann '20 is enl rged to form. su stential flange 26, and it an opening 27, through which the UUHQJ' -5 passes, the head being i'ierrower than the groove to per init thehelt shifter to he moved a. greets: distenoe thin the stop log '26. A1111 21 is fOlll1-c.. with on opening 28, end mounted to slide lnterslly on the sleeve the outer end of said errn hex-lug on opening through which the power lreltfpnss The belt shiitei is modate any angular position of the power belt 29, without displacing or rearranging any of the other parts.

in standards 30, is mounted a shaft 31, carrying a tilting frame 32, having a projection 33, formed With openings to receive the terminals of a yielding belt 34 which fits in the groove 7 of the fast pulley. One end of the elt is fastened in its opening by a set screw 35, then it is passed around the friction pulley, and throu h the opening 22 of the arm stop 49 is reached, causing arm 45 to move the 21, and'is final y secured in its opening by a set screw 36. The upper end 37 of the frame 32 has a headed projection 38, between which and said end 37, the flange 26 is loosely held by means of which movement of the frame 32,'is imparted to the belt shifter. A latch arm 39 extends from the frame 32, and is caught by a latch 40, pivoted at 41, and control ed by the automatic throw out mechanism 42. A spring 43 is attached at one end to the latch arm 39, and at its opposite end ine, anad- 44 limiting the upward move- To start the sewing mechanism, connection 48, is operated to draw down lever 45 until tilting frame 32 on its fulcrum 31 toward the sewing machine, until lever 39 is caught and held by catch 40. Projection 33 being on the frame, when the latterlis tilted, the proj action is raised and consequently the belt 34 is slackened and friction on pulley 7 is removed, and as frame 32, is loosely connected to flange 26 ofthe belt shifter, the latter carries belt 29 from the looseto the fast pulley,

and the stop lug 20 from the path of the, dog 10, as shown in Fig. 1. As the distance between \the centers of thefast and loose pulleys is greater than the required movement of the stop lug 20, the flange 26 moves between the flanges of the collar 19. "Hence in starting the machine, flange 26 moves the distance from the full to the dotted lineposition indicated at (L111 Figure 2, before c01- lar 19 carrying stop 20 commences to move;

This gives ample time for the belt to be in proper position to engage the fast pulley by the time stop lug '20 isclear of the .doglO The belt having been transferred from the loose to the fast pulley, the sewing machine is 'in motion, and as the pulley 4 is revolved rapidly in the direction of arrow 1;, Fig. 6,

the dog 10, is thrown outwardly and away from the normal path of the stop lug 20, by centrifugal force,- against thetension, of-

13, as shown in dotted lines in Fig.

g, i 6. I ien the required number of stitches have been completed, the automatic throw out mechanism 42 disengages the latch, and the spring 43, acts to return the sto ping mechanism to normal position, as fol ows:

The tilting frame 32 now being actuated spring,43, the belt shifter is moved toward the i right (Fig. 2) which shifts the belt from the fast to the loose pulley, and moves the stop lug 20 to its normal position. However,

by reason of the construction of the collar 19 dog engages it when the spring 13 overcomes the centrifugal force'of pulley 4, and the sewing mechanism is stopped. However, as the collar 19 is connected to belt 34 by arm 21, and as the said collar is free to turn, when the dog engages the stop the belt is pulled tightly aroundpulley 7, which insures of the final stop being made softly and without back lashing; The stop lug and connection with the belt 34, are arranged so that when the final cushioned stop takes place the sewing mechanism is positively stop ed with the needle elevated and out of the fa ric.

It must be understood that the spring 13 is of the proper tension, so that it can only overcome the centrifugal force when. the speed oftherfast pulley is greatly-reduced, hence when the stop is engaged, the belt 34 will serve as afinal cushion. i

The yielding belt to retard the movement of the fast pulley is of the utmost importance. It is noiseless; it is quickly adjusted; and. it is ellec iveas a binding agent. The centrifugal force overcoming the tension of the dog spring to remove the dog from the patriot the stop lug, is also-important. These two vital features with therr'necessary connec:

tions in an. organized stoppin mechanism, one dependent on the other an operating in eonjunction with each other produce a positive andconyement, means of sto ping the mechanism to-insure of the needle eing leftin the proper position for the nextoperationl The location of the yielding belt, and its connection '.with the tilting frame andthe:

arm of the stop. lug, serves to not only'prelimina'rilyretard the movement ofthe fast pu1le'y,-' but also serves to finally stop the movement ofsaidpulley, sho'uld'the contact with the stop 'lug'take-place a moment before the-predetermined time. 4 A i the stitching mechanism, with, a spec needle in each instance being elevated above- Inpractical use,Ihavesuccessfullystogped; I25

high as three thousand revolutions,- and as ,low' as fifteen revolutions. per minute, the

attribute to thopeculiararrmigemcntof parts path of the stop, the reverse movement of previously described.

'lhe'stopping mechanism may be manually operated during the stitching operation, by disengaging the latch as will be readily understood.

My invention may be arranged so to he used as a safety device.v As illustrated in 8, 50 indicates a fast pulley, 51 a power belt, 52 a dog on the pulley and 53 a stop adapted to be mennally operated. in operation this arrangement of parts is such that when starting a machine, the stop is either removed, and then replaced, or the dog is lifted over said stop until the centrifugal force is sufficient to withhold the dog from the path of the stop. Should a break occur, the dog will enqage the stop immediately the revolution of the pulley falls below a predetermined point. If a brake be applied to slow down the speed of the pulley, the stopping operation is just as effective.

W at I claim as now is:

1. In combination, a machine haiing a power shaft and a fast dog carrying element, a do movably mounted on the dog carrying e ement and revolved thereby, and a stop, said dog being moved out of line with the stop by centrifugal force when the dot carr ing element exceeds a predetermined speed, and moved into line with the stop by the slowing of the speed of the pulley, to stop the machine in a determinateposition.

2. In combination, mechanism having; a power shaft and a dog carrying element, a stop movable toward and from-the plane of travel of a removable dog, traveling toward the stop, said'dog engaging the stop when the speed of the power shaft falls below a predetermined speed, to stop the mechanism .at a determinate position.

3. In combination, mechanism having a power shaft and a. dog carrying element, a movable oushloned stop, and a movable ..""5

dog which engages the stop when the power shaft revolves below a predetermined speed to stop the 'mechanism. at a iiletorminate point.

'4. In combination, mechanism liming a power shaft and a dog carrying element, a

. movable stop, a "movable dog which engages the stop,an( aspring forcing the dog toward the stop. the dog being throw n from the path of the stop by centrifugal force and thrown toward the stop by the spring when the speed of the pulley falls below a predetermined speed, to stop the mechanism at a determinate point.

5. combination, mechanism having a powerisha-ft and fast and loose pulleys, a

stop,'power transmitting; means, a rnov able dog, and-fa shifter, the shifter transferring the power transmitting means to the fast pulley and moving the stop, the dog being ,thko'rfvnbycentrifngal force from the normal the shifter transferring the power transmitting means to the loose pulley and returning the stop to normal position, the. reduction of speed of the power shaft causing, the do e to assume normal position to contact with the stop to hold the securing mechanism in a predetermined position.

6. In combination, mechanism having a power shaft and fast and loose. pulleys, power transmit ting means a cushioned stop, a mo1al le dog, and a shifter, the shifter transferring the power lri'mslnitting means to the fast pulley and moving the cushioned stop, the dog: being thrown by centrifugal force from the normal path of the cushioned stop, the reverse mo'iement of the shifter transferring the power transmitting means to the loose pulley and returning the cushioned stop to normal position; the reduction of speed of the power shaft causing the dog to assume normal position to contact with the cushioned stop to hold the mechanism in a predetermined position.

7. In combimitimi, mechanism having a power shaft and fast and loose pulleys, power transmitting means, a stop, a movable dog, it spring normally pressing the (log in the path of the slop, a shifter, the shifter transferriri the power transmitting means to the t pulley and moving the stop the dog being thrown by centrifugal force from the normal path of the stop the ro.erse movement of the shifter transferring the power transmitting means to the loose pulley and returning the stop to normal position, the reduction of speed of the power shaft causing the dog to assume normal position under the influence of its spring to contact. with the. stop to hold the mechanism in o predetermined position.

8. In combination, a machine having a power shaft and a fast and loose pulley, power transmitting means, a shifter, a stop mow able with the shifter, a dog on the fast pulley, a rctarder, means connecting the retnrder and the stop, the movement of tho shiftertraiisl'erring the power transmitting means from the fast to the loose pulley which actnates the retarder to reduce the speed of said fast pulley, at which time the dog moves to engage the stop to stop the machine at a with the retarder, the movement ally mounted yielding retarder, a connection between the actuating the.

retarder and the stop, means yielding retarder to reduce the speed of the pulley to cause the dog to move and engage the stop, said engagement also acting to tighten the retarder.

13. In combination, a machine having a power shaft and. a fast and loose-pulley, a dog power transmitting means, a stop, a retarder, a shifter and means for actuating the shifter whereby-the stop is moved, the power transmitting means shifted to the loose pulley, and the retard'er actuated to reduce the speed of the fast pulley, at which time th dog engages the stop.

14. In combination, a machine having a fast and a loose pulley, power transmitting means, a stop, a movable dog, retarder con-- nected with the stop, and a shifter connected of the shifter transferring the power transmitting means from the fast to the loose pulley which also actuates "in. retarder, and moves the stop, the reduction of the speed of the fast pulley causing the dog to engage the stop and further actuate the retarder.

15. In combination, a machine having a fast and a loose pulley, power transmitting means, a dog, a cushioned movable stop, a retarder, a shifter, and means for actuating the shifter whereby the stop is moved, the power'shifted to the loose pulley, and the retarder actuated to reduce the s eed of the fast pulley, at which time the og engages the cushioned stop, the latter engagement also serving to retard the movement of the fast pulley before the final stop takes place.

16.' In combination, a machine having a power shaft an a fast pulley, a stop, a pivotmally; forcing the dog inwardly, the do'g being thrown outwardly by centrifugal force, a retarder, and-means simultaneously -actw ating the stop and the retarder to reduce the speed of-t'he pulley,-at which time the spring overcomes the centrifugal forcc a'nd causes the dog to move and engage the stop.

.17. In combination, a machina hay ng a power shaft and a fast pulleygja stop, a rev oluble movable dog, retarder, and means automatically.operating the retarder to re? duce'the speed of the pulley at which time the dog moves and in its revolution it engages the stop.

comprising a 'of the fast pulley falls og on the pulley, means no'rbelt is 18. In combination, a machine having a power shaft and a fast and loose pulley, power transmitting means, a movable dog, a stop, a retarder, a shifter, and means for moving the shifter, the movement/of said shifter shifting the power transmitting means to the loose pulley, tightening the retarder on the pulley, bringing the stop into position to cooperate with the dog,- said dog engaging the stop when the speed of the pulley has been decreased.

19. In combination, a machine havinga power shaft and fast pulley, power transmitting means, a yielding retardercomprising a belt, means for tightening the belt to retard themovement of the pulley, and a final stop.

20. In combination, a machine having a power shaft and a fast pulley, power transmitting means,

belt, and means for tightening the belt to retard the movement of the pulley, and a cushioned final stop. l

21. In combination, a machine having a power shaft and a fast pulley, power transmitting means,'a yielding retarding device passin over the pulley, the ends of said retarder being secured to a tilting lever, ing lever, a stop controlled by the tilting lever, and a movable dog, the tilting lever actuating the retarder and reducing the speed of the pulley to permit the dog to move and engage the stop.

a yielding retarding device a tilt- 22. In combination, mechanism havinga power shaft and fast and loose pulleys, a pivoted dog with a means to normally force it inwardly, a slidable stop mounted to be moved in the direction of the power shaft, a retarder connected with the stop andv acting on the fast pulley, and automatic means for actuating the retarder and sliding the stop in the path of the dog, said dog engaging the stop and cushioning the blow and bringing the mechanisms to a stop when, the speed mined oint.

power shaft, fast and loose pu lleys thereon,

- a belt and a stopping mechanism' saidstoppin mechanism com rising a belt shifter, a cus iioned stopcontro led by the belt shifter, a spring actuated sto ping do normally ressed toward the patii of the "s op, means or actuating the shifter," the dog being thrownfrom the path of the'stop by'deih trifugal force when the belt is on the fast ulley, and fhrced into the path of the stop y its sin-mg; to stop. the, machine when the shifted to theioose pulley, and the speed ofthe fast pulleyisreducednr 124. in edmbination.,mechanism having a power'sh and fast and loose pulleys, a wit, a move-hie dbg carried by the fast p xl' ley, a 'niovahle stop, a'belt shifter loosely mounted to be positioned at any' an 'le to re- .ceive the belt, the belt shifter controlling the below a predeter n combination, a'machme having a movement of the stop, and means for operating the shifter to move the belt from the fast to the loose pulley, and move the stop in the path to be struck by the dog when the fast pulley reaches a predetermined speed to stop the mechanism.

25..'ln combination, a machine havinga power shaft and a'l'as't and loose pulley, a stop, a movably mounted dog, a retarder, lncans actuating the retnrder to reduce speed ofthe pulley cause the dog to move and engage the stop to stop the inn chi 2 at a predetermined point, a belt cooperating with the fast and loose pu ley, one a belt shifter mounted to turn concentric with the power shaft.

26. In combination, machine having a. power shaft and a last and loose pul ey, a dog, a retarder provided with a sto belt shifter carried by the retarder and having circular and lateral movement thereon, a belt carried by the belt shifter to transfer the belt from the fast to loose pulley and vice versa, and to move the rctarder. to place the stop in operative position relative to the dog, and means for operating the belt shifter.

27. In combination, e machine having a power shaft and fast and loose pulley retarder having a stop and formed with a groove, a pivoted dog thrown 'aylroni the stopbycentrifugal force when the shalt is revolved, means to return the dog to normal position, a belt shifter fitting in the v groove and having circular and lateral moveinent therein, a belt, means for operating the belt shifter to transfer the belt .l'roin the fast to the loose pulley and vice verse, and the retarder.

28. In combination, a machine having a power Shaft and lust and loosipullers, a pivoted dog nningnted on the last pulley, 1., stop cooperating with the iivetod dog, 5: retarding device formed with a groove, a belt shifter engagin the groove and turning lateral n'iovement therein, a beltshifter, and means to 0 crate the belt shifter to move the belt in in Vance of the movement of the stop.

,29. In combination, a machine having a power shaft and last and loose pulleys, api'coted dog, a retarding device '[u'ovidod with a stop and a groove, a beltsniiter mounted in .hegroove and carrying a belt, a lever engaging the belt shifter to transfer the belt from one pulley to the other, and also move the stop with relation to the dog, the shifting of the belt being started prior to the movement of the dog, and the retarderbeing operated before the movement of the belt is completed when stopping the machine.

I, 30. In combination, a machine having a shaft, carrying a. dish, a retarding device, which includes a yielding element contacting Withthe disk, a iinal stop, power transmitting rneans forr opcrating the shaft and releasing the retarding device, and shifting the power transmitting means, and auto matic means for applying the retarder and the iinnl stop, to stop the machine at a predetlcrniinel point.

Si. in combination, a machine having a power shaft and test and loose pulleys, a pivoted dog, a stop coopm'ating thcriwrith, man ual means: tor removing the stop from the path of the dog, said dog being thrown from its normal position by movement of the shaft, a retarder, nutoinali' means for throwing the stop to its normal position and applying the retordcr, the reduction of the speed olthe .niachine permitting the automatic means to return the dog to its normal position to contact with the stop, to stop the machine at a prcdeterininerl point,

312, in combination, a machine liaviz'ig a power shaft and fast and loose pulleys, a pivoted dog, a stop cooperating therewith, manual means for removing the stop from the path ol' the dog, said dog being thrown from its normal positi n by movement of the machine, a rotari'ler having a yielding movement, automatic means for throwing the stop to its normal position and operating the retarder, the reduction of the machine per niittii the dog to assume norm all position to contact will. the stop to stop l ll P machine at a prcdetcrniinod point.

33. lln combination, a nnichine having a power shalt, a disk on the shalt, a positive stop comprising a pivoted dog and an abut ineut therel'or, a yielding retardcr passing over the disl; and having its ends fixed, and means operating the reti'u'der in advance ol the engagement of the dog with its abutmen t, said means also serving to position the abutment in a plane to be encountered by the dog.

Si. in combination. a nuichiue having apowcr shalt and lust pulley. pivoted dog carried by the fast pulley which is thrown outnnrdly by centrifugal force, a spring for returning the dog to normal position, a stop, a yielding retiu'dcr on the last pulley, and means for operating the rctarder, the movement of said means also serving to position the slop relative to the dog for the latter to engage the former to stop the machine at a preiletcrniincd point.

3-). in combination. a n'nichine having a power shall and last pulley, a final stop which includes a dog and an abutment, a yielding retarder passing around the fast pulley and having its ends fastened, means for adjusting the tension of the rclardor on the pulley, and menus for operating the retardcr, also the dog to finally stop the machine at a determinate point.

30. in combination, a machine having a power shalt, a rctarder, a final stop, and means for operating the rcturdcr, the final stop being operated by the decreased speed of the power shaft.

37. In combination, a machine having a power shaft and fast pulley, a' 'elding re= tarder operating on the fast pu ley, a final stop, and means for operating theretarder, the finalstop being operated by the decreased speed'of the fast pulley, to stop the machine at a" redetermined point.

38. In com ination, a machinehaving a power shaft and disk fast thereon, a yielding retarder operating on the disk,'a final stop, means for releasing the retarder, and releasing the final stop to start the mechanism, and means for re rsing the movement of the retarding operating means, and returning the final stop to normal position, to stop the machine at a determinate'point.

39. in a stop motion device, tion with a power shaft, fast and loose pulleys on said shaft, a positive stopping device between the shaft and fast pulley, said stopping device including a movably mounted dog normally in contact with a stop, manual means for withdrawing said stop from looking position with the dog sim iltaneously with the shifting of the belt from the loose to the fast pulley when the shaft is revolved beyond a determinate speed, and automatic means for reducing the speed of the shaft to cause the movable dog to contact with the stop and stop the shaft in a determinate position. I

40. in a stop motion device, the combination with a power shaft, fast andfoose pulleys on said shaft, a belt shifter, a stopping device including a movable dog mounted on the-fast pulley and a stop with which the movable dog normally engages, means for operating the stop'belt shifter to transfer the belt from the loose to the fast pulley to revolve the shaft and thereby throw the movable element into operable position by centrifugal force, and automatic means for moving the belt shifter to throwthe belt from the fast to the loose pulley and reduce the speed of the shaft to permit the movable dog to engage the stop and stop the shaft in a determ'inate position.

41. In a stop-motion device, the combination with a rotary shaft having fast and loose pulleys thereon, of a belt-shifter, holding means for retaining said belt-shifter in position so that the driving-belt will run on said fast pulley, automatic means for triping the said holding means and for-moving said belt-shifter, to transfer the driving-belt from said fast pulley to said loose pulley, a positive stopping device for said shaft, and a friction belt which is operated independently of the said positive stopping device and which is drawn against the fast pulley when the said belt-shifter is moved to transfer the said driving-belt to said loose"pulley, the said frictionbelt being so arranged that when it is drawn against the fast pulley the moveth ecombine ment of the latter is arrested or retarded before the said positive stopping device comes into operation, so as to soften the jar or shock of t e final st o 42. In a stop-motion device, the combina tion with a rotary shaft having fast and loose pulleys thereon, of a belt Shifter, .holding means for retaining said belt shifter in such positiont-hat the driving-belt will run .onsaid fast pulley, automatic means for tripping'.said holding means and for moving said beltshifter, to transfer the drivin -belt from said fast pulley to said loose pul ey, a positive stopping device for said shaft comprising a stop, a friction belt which 18 operated independently of. the said stop and which is operated when the said belt-shifter is moved to transfer said driving-belt to said loose pulley, and adjusting means for varying the stress of said belt to cause more or less arresting or retarding action to be exerted before the said positive stopping device comes into operation; whereby the jar or shock of the final stop may be softened to any desired degree.

431 A stop-motion device "comprising .a

driven shaft, a positiveesto pingrlevice therefor including a stop an an element cooperating therewith, fan independentlymounted and inde endently-operated arresting or retarding device for. said shaft, and common means for tripping said arresting or retarding and positive stdpping devices into action to effecttheir successive operation upon the driven shaft.

44. A stop-motion device comprising a driven shaft; a positive stopping .device therefor, an independently-mounted and independently-operated arresting or retarding evice'for said shaft, common means for tripping said arresting or retarding and positive stopping devices into action to effect their successive operation upon the driven shaft, and a cushioning device for the said J positive stopping device.

45. In a stop motion device, the combinetion' with a revolving power shaft having fast and loose pulleys thereon, of a belt shifter, holding means for retaining said belt shifter in position so that the driving belt will run on said fast pulley, automatic means for tr'ippingthe said holding means and for moving said belt shifter to transfer the driving belt from said fast to said loose pulley, a stopping device for said shaft, including a pivoted element thrown outwardly by centrifugal force when the revolving powershaft isset into motion and a retarding element is released, and aretarding element, the retarding element reducing the speed of the fast pulley when Y said belt shifter is moved to transfer the belt from the tight to the loose pulley tolallow the pivoted element .to assume normal positionto permit the mountcdwlog normally in contact with said stop, means for manually withdrawing the stop from contact with the dog and shifting the belt from the loose to the fast pulley to revolve said fast pulley and centrifugally throwing the dog out of the path of movement of the stop, and means for reducing the speed of the power shaft to cause the dog to assume normal position and contact with the stop to stop tho shaft in a determinate posi tion.

47. In a stop motion device, the combination with a power shaft having fast and loose pulleys mounted thereon, a belt shifter, a stopping device including an element which is thrown outwardly by centrifugal force, and a movable element cooperating with the centrifugally thrown element, means connecting the movable element and the belt shifter, means for operating the movable element and the belt softer to transfer the belt, end automatic mea s for operating the movable element and the. belt shifter to reduce the speed of the power shaft to allow the centrifugally operated element to assume normed position and contact with the movable element to stop the shaft in a determinate position.

48. In a stop motion device, the combination with a power shaft, power shifting means, a centrifugally operated, stopping element, said stopping element being thrown outwardly when power is applied to the shaft, :1 second element cooperating with the centrifugally operated stopping element, means for withdrawing the second mentioned element from contact with the centrifugally operated stop ing element, automatic means for releasing t e second element to retard the movement of the power shaft, and adjusting means cooperating with the second stopping element to cause one or more revolutiohs of the power shaft after the second elemeht is automatically released and before the centrifugally operated stopping element finally stops the movement of said shaft.

49. In a stop motion device, the combination with apower shaft, having fast and loosopulle'ys thereon, a belt shifter, a centrifugally operated element, a stop with which the centrifugally operated element cooperates, means for manually moving the belt shifter to transfer the belt to the fast pulley and simultaneously withdrawing the stop from normal position, automati means for returning the belt shifter and the stop to power shaft, the centrifugally operated element while thrown outwardly being out of contact with the stop until predetermined speed and position of the power shaft is reached.

50. In a stop motion device, the combination with a power shaft, fast and loose pulleys mounted thereon, a belt shifter, two stopping devices, one of which is pivotally mounted and is centrifugally thrown from normal position outwardly to permit the )OWLI' shaft to revolve when the power belt is applied to the fast pulley, the other said stopping device mounted to be moved independently of the pivotally mounted stopping device, means for moving the second mentioned stopping device and the belt shifter to move said belt shifter in JUSlblOn so that the driving be t will run on t 0 first pulley, said movement also releasing the second mentioned stopping device, and automatic means for operating the second mentioned stopping device to reduce the speed of the, revolvin power shaft and allow the pivotally mounted stopping device to assume normal or locked position to permit stopping the revolving shaft in a determinate position.

51. in a stop motion device, the combination with a power driven shaft, a driven element fastened to said shaft, power shifting means, :i centrifugall controlled element carried by the driven eliunent, a stop cooperating with the centrifugally controlled element, said centrifugal-11y controlled clement positioning itself with relation to the stop when the power shifting means is operated and the speed of the power shaft is reduced, the cooperation of said stop and said centrifugnlly operated element causing predetermined stopping and positioning of said shaft.

52. in a stop motion device, the combination with a )ower driven shaft, a centrifugally controlled element, means fastened on the shaft to support the centrifugally con trolled element, a non-revolving device 00- oierating with the centrifugall controlled element to stop the revolving s raft when a predetermined speed and position of said shaft l-a reached.

.33. In a stop motion device, the combination with a. rower driven shaft, a centrifugally controlled element, means fastened on the shaft to support the centrifugally controlled element, power shifting means, and a locking device, the centrifugally controlled device preventingthe final lockingof the shaft by the locking device until a predetermined speed is reached after the shifting means is moved.

5-4. in a stop motion device, the combine tion with a power driven shaft, a cenirifu gall controlled element, menus fastened to the shalt to support the eentrifugnlly opernormal position to reduce the speed of the ated element, a locking device cooperating with the centrifugally operating element, the] In testimony whereof I fifiiX my signature, clelntfifiilgizilli operated elegient preglentin in presence of two subeoribing Witnesses. 't' e ma 0c ing unti a re etermme s ee k and position of the shafiz is reached, andPa-d- HENRY MILLER 5 justable means to reduce the speed. of the Witnesses: v shaft to alter the time of the operating of the WM. F. PALMER, Racking device after power is shi ed. ALoNzo KNAPPEN.

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