US1602785A - Assig-hoe - Google Patents

Description

Data 12 19260 W. A. SIMONE) STOP MECHANISM FOR KNITTING MACHINES Filed April 13 1921 S Sheds-Sheet 1 W. A. SIMONID STOP MECHANISM FOR KNITTING MACHINES Oct. 12

Filed April 15 1921 5 Sheets-Sheet 2 ch 112, M26 ,mmmgs W. A. SIMOND STOP MECHANISM FOR KNITTING MACHINES Filed April 15 1921 5 Sheets-Sheet 5 Oct. 12 A9260 1,02 7% W. A. SIMONE) STOP MECHANISM FOR KNITTING MACHINES Filed April 15, 1921 s Sheets-Sheet 4 r I 5 l l /8 J;

W. A. SIMONE STOP MECHANISM FOR KNITTING MACHINES 5 Sheets-Sheet 5 Filed April 15 1921 .NKLIDL', NEW] it CG] LANY, G T101)!" 01* Tt-TE W' HAMPSHIRE.

ASSKGNUF-z't TO ACME KHIT'llZh.

Application filed April 13,

Thi in nechanisms this art it is customary to equip an automatic l'inittinp; machine with a mechanism t automatically stops the machine u 'ion the breaking of the yarn or thread and stop illQlldDi of this kind are widely used. in some cases imperfect work will be produced by a machine of this cl l actor due to some defect in the l; iitting instrumeutalities, as. for instance, to a broken needle latch. This prevents the casting oil of the stitches, thereby causing the work to pile up or bunch on the needles. and producing unsalablc goods, Mechanisms have been provided heretofore to "stop the machine automatically when an accident of this kind occurs. but these mechanisms have not been developed to the scme degree of perfection as have the automatic stop mechanisms of the character first mentioned, nor are they as widely used as the stop mecl'ianisms of the other type.

it is an important object of the present invention to improve stop mechanisms of: the type that are operated by the bunching' of the work in the manner just described with a view to providing a mechanism of this character that shall be very sturdy in construction, reliable in operz tiou. which shall require a minimum of care and attention, and which can be econoinically manufactured. It is (.lso an object of this invention to combine a mechanism of us character with a mechanism for automatically stopping); the machine upon the breaking of the yarn with a view to a onlnnr f". 2-?

iossible. a du lication of )arts in the mechanisms. facilitating the -e-settingr o mechanisms after they have bee oper nisms of this character. ii hile the ii will be herein disclosed as embodiec mechanism which will automatically thread lrealrs or a it is mechz'l. the other.

ue nature of the invention wi Ely i'znderstood from the followin tion when read in connection ith the i.c

descrro serial \To. 460,956.

co npanying drawings, and the novel features will be particularly pointed out in the appended claims.

the accompanying; drawings i igure 1 is partial front elevation of a knitting machine provided with my improved stop motion;

F g. 2 is aplan View of my improved stop motion;

Fig. 3 is a side elevation, partly in sectio 1 a portion of the machine shown in 1;

Fig. i" i a section on line T{7, Fig. 6; and

Fig. 8 is a plan view of a modification.

Referring now to the drawings 1 designates the frame of the machine 2 the main shaft, and 3 the cam shaft intermittently driven through the usual mechanism the greater part of which has been omitted from the drawings. This mechanism includes a slow speed driving pulle i, a high speed driving pull y 5. both mounted on the shaft 2, an idle or loose pulley 6, and a belt shipper 7 whose fork 8 engages the belt that drives the pulleys 4:, 5 and 6. The bed 9 of the machine is secured to the top of the frame 1, and is provided in its upper surface with a ci .Clllfll avity within which is mounted a rot table or cam plate 10 surrounding a stationary needle cylinder 11.

table or cam ring 10 is commuously dr'r'en from the main shalt this ring at retati continuously in one dircctic at othc njiotion y recipl All. of above ricutno parts are con structcd arid opeietv F ii y machine shown and c U. Patent To. 699.35 d J 1899, to J. D. Hemphill to which re erence may be had for a complete description of the construction and operation of the machine shown.

My improved stop mechanism comprises a latch 18, Fig. 6, mounted on the upper side of the rotating cam ring l l, said latch being pivoted at 19 to the ring 1% and having a spring 20 connected therewith to hold it normally in a notch formed in a vertically disposed stem 21. The stem 21 extends through a hole in the sinker cam ring it and is free to slide vertically therethrough when permitted to do so by the latch 13. Normally, however, the latch supports the stem in an elevated position. At its lower end the stem 21 has a cylindrical stud 23, Fig. 3, secured thereto which is movable ver tically within an aperture provided in the table 10, this stud being integral with a shoe or cam 24: disposed immediately below the table 10 and normally occupying an elevated position close to the under side of said table. This cam 2 l is engaged by lugs 25--25 projecting downwardly from the table 10 which serve to hold it against rotation on the axis of the stem 21. At certain times the cam 24 engages a roll 26 mounted on the free end of an arm 27 which is secured to a vertical rock shaft 23 journaled in bearings on the frame 1 and bed 9. Near its lower end the shaft 28 has an arm 29 secured to it and a spring 30 acts on the hub of this arm to urge the shaft 28 upwardly. This shaft, however, is normally held depressed against r the upward pressure of spring 30 by a latch 31 (Figs. 1, 2 and 5) one end of which normally rests on the roll 26.

The swinging movement of the arm 29 is transmitted through a link Fig. 1, pivotally connected thereto and having a forked end which straddles a stud or pin projecting laterally from the upper end of a. lever 34:. This lever is fulcrumed at and has its lower end connected by a link 36 with the belt shi iper 7. The belt shipper is slidably mounted on a stud 37 projecting from the frame 1 and it is ield against rot-a tive displacement thereon by an arm 33 rigidly but adjustably secured to the frame 1, as shown in Fig. 1. It will be clear that movement of the lever 3 f on'its fulcrum 35 acts through the link 36 to move the shipper 7 lengthwise of the stud 37 so as to shift the belt from one pulley to another. A spring 39, connected at one end to the stud and at its opposite end to the link normally holds said stud against the crotch of the fork in said link. lhe lower of the link 32 is notched at 10 and the shoulder 4-1 at one end of this notch cooperates wit, a sliding latch 42, normally held against-said lower edge by a spring to retain the link in the position to which it is moved by the arm 29 when it holds the driving belt on the loose pulley The belt shipper 7 has a de pending lug 44 which is held against the side of the usual speed cam 4-5 by a spring 16, this spring acting through the arm 29, link 32, lever 31 and link 36 to yieldingly urge the shipper 7 towarc the speed cam. The spring l6 thus cooperates with the cam to automatically shift the shipper 7 back and forth during each cycle operations of the machine. These elements cooperate to hold the belt on the slow speed pulley during the knitting of the toe, heel and certain other parts of the stocking, and on the high speed pulley 5 during the knitting of most or the foot and leg.

Normally the roll 26 is held depressed by e latch 31 so that it occupies a plane below e plane of the cam 24: but it lies partly w=thin a projection of the path of rotation o the cam 2 l, as indicated in Fig. 5. When the work piles up or bunches on the needles, as above described, some of the sinkers are unched material, and as the latch 18 rotates with the cam plate 10 it is struck by these projected. sinkers and swung out of engagement with the stem 21, thus permitting said stem and the cam 2-il to fall by gravity until a stop collar l? fast on the stem engages the top of the cam plate 10 and arrests this movement. The cam 2 1 now is in the same plane as the roll 26 and consequently as the cam rotates with the cam plate 10 it strikes the roll 26 and thereby rocks the shaft 28. This movement is transmitted through the arm 29, link 32, spring 39, lever 34: and link 36 to the shipper 7, moving it toward the right, Fig. 1, and thereby shifting the driving belt on to the loose or idle pulley 6. This stops the machine.

The movement of the link 32 proouced in this manner brings the notch l0 into register with the upper end of the latch 42, thus enabling the spring 43 tothrust the latch upwardly into the notch where it locks the link 32 and belt shipper 7 in the positions to which they were shifted by the cam 24:. The quick movement of the link 32 toward the left, Fig. 1, independently of lever 3st, is permitted by the fork in the right hand end of said link, the spring 39 acting afterward to shift the shipper 2". it will be seen that the latch 42 is slidably connected with the frame of the machine by means of a screw 43 and a stud or post 49, the former extendthrough slot formed in latch-near its upper end and the post 19 est nding through a hole formed in the lower laterally extending portion 51 of d latch.

After the trouble which initiated the action of the stop mechanism has been corrected the parts are returned to their normal positions through the. manual operation of a hand lever 52 mounted above the bed 9 and secured fast on the upper end of a rock shaft 53 journaled in hearings in the bed 9 and ushed radially outward by the piled up or p frame 1. That is, this hand lever resets the stop mechanism. For this purpose the shaft 53 carrieu :1 com located immediately shove the lateral extension 51 of the latch it will be. seen that by swinging the hand lever in a clockwise direction the am will act on the part 51 to depress the hitch withdrawing; its upper end from notch 40, and thus perinit'li: the spring so to restore the parts to their irin'inal positions and thereby start the machine into operation again. Prior to moving the handle to reset the mechanism the plunger E El should be ra sed into position to allow the latch 18 to snap into the notch where it will retain the plunger in its normal. position until the latch is again moved by displaced sink lit will be observed that in the construction above descrihed the. mechanism which effects the stopping of the machine includes the an and the belt shipper and the connecting;- necnanism therehetween, and that the latch 18 and the per s that operate it constitute a controlling; means for this mechanism. This stop mechanism is operated automatically, as ias been descril ed, to stop the machine. under certain predetermined conditions, specilicelly the bunchin of the wort: on the needles. it is usual sin to equip machines of this type with mechanism that automatically stops tie machine upon the breaking of the yarn or thread, and the present invention provides novel mecl'ianisi'n i'or ellecting this result. in the meclmnism above. described the stoonino' of l i re the machine is accomplished ny dropping the rotntin cam 24 down into the nlune ot' the j k" roll 26 on the arm 24' so that t can strike this roll and operate the chain of connections between the roll anc the belt shipper. This roll, has been stated, is urged up vnrdly by a spring" 30 acting through the rock shaft 28, but normally held depressed by a latch 31 which bears on the roll. The 'op mechanism operated by the breakingof the yarn is arranged to trip the latch 31 End allow the spring 30 to arise the roll Fall into the path of rotation of the emu and thus to operate the stop mechanism in the manner that has been previously 6;,plill1l9tl.

For this purpose the latch 31, Fig. 2, is mounted on a. pivot 60 and is no 'mully held a spring 61 in position to niiaintain the roll 26 (flepressed. The mechanism for tripping this latch may be operated from any suitable detector mechanism of which several well known varieties are the market.

he construction shown is desie'ned especial.-

\ 7 Y l known it ildmen which constructed substantially in accordance with the disclosures made in Pettentsllos. 698,089 and 698,090, both dated April 22, 1902. A yoke-shaped member 63 is mounted last on the reel: shaft (32 end is turned with it, one arm of the part (33 striking; a pin 6 projecting; upwardly from an a m of bell erenl; lever es which is lulcrumed on the frame at 66. The other arm of the bell crank lever (35 acts on the end of a rod or plunger that slides horizon sly in the frame to force this red forward into enenie' l[ with a floating lever 68 wl i-ch ceries a pin (it) that strikes the latch 31 and wings the latch about its fulcrum in a direction to disengage it from the roll The spring; 70 acts 2. a butter to cushion the forward movemen of the plunger 61''. This results in the stopping oi the machine, as will readily be apparent.

in order to reset this mechanism e ter the machine has been stopped and when it is desired to start the machine into operation 2 gain, connections are provided with the lmnd lever 52 so that both the latch and the mechanism controlled thereby are reset from this lever. For this purpose the "eel; shalt 53 on which the lever 52 15 mounted me an arm '51 secured thereto and right, ig. 2, the lever sliding along a pin 73 until left-hand end snaps the end oi the plunger (57.

LL?) l i lien the audio is manually returned to its originl position a spring); i l which is connected 0 tl e floating lever 68, as shown in Fig. 2, returns this lever to its original position, as indizated in said ligure. The detector element which engages the thread is re-set by hand p or to the turning ot' the handle 52 so that the movement of this handle. resets all the parts of the step mechai'iism except the detector.

lit is also necessary that the resetting operation hull return the latch 23-1 and roll 26 to their original positions and for this purpose 5 cam "Z6, Fig. 1. is secured fast on the rock shnit Z11 position t engage one shaft 'I shove described, open to thi carry the roll 26 do\ the end of the latch 31, pert 6i to swing this lit) these parts to their original relationship. This completes the resetting operation.

The movement of the rock shaft 62 produced by some detector mechanisms, or the parts controlled thereby, is relatively Weak and not sufiicient to operate the plunger 67 with certainty. A modified construction illustrate-d in Fig. 8 has therefore been provided for use with mechanisms of this character. In this construction a spring 80 is secured at one end to a collar 81, Fig. 8, which is fast on the plunger 67, the other end of this spring being secured to the bed 9. The spring 80 therefore tends to urge the plunger 6. forward but this movement normally is prevented by a latch 82 which is pivoted at 83 and is retained in its latching position by a spring 84. A lever 85 fulcrumed on the frame at 86 is connected by a link 87 with one end of the latch 82 and it is connected by a rod 88 with an arm 89 secured fast on the lower end of the rock shaft 62. Consequently, when the detector mechanism is operated to turn the rock shaft 62 in a clockwise direction, this movement is transmitted through the rod 88 to the lever 85 and results in releasing the latch 82. The plunger 67 is immediately shot forward by the spring 80 and operates the mechanism that stops the machine, as above described.

This mechanism also is reset by the same movement of the hand lever 52 above de scribed. In order to produce this result an eccentric 91 is mounted fast on the rock shaft 53 in position to engage one end of a lever 92 which is fulcrumed at 98 and has its opposite end connected by a link 94: to the inner end of the lever 85. It will be evident from an inspection of Figs. 1 and 8 that when the hand lever 52 is swung in a clockwise direction, the shaft 53 will be rocked with the handle, thus causing the arm 71 to swing the lever 78 and thereby force the plunger 6'? backwardly far enough to reengage the latch 82 with the collar 81. At substantially the same time the eccentric 91 will operate through the connections just described to rock the lever 85 in a. clockwise direction about its fulcrum 86 thus releasing the latch 82 from the control of this lever and allowing it to engage the collar 81 again and retain the plunger 67 in its retracted position. This movement of the lever 85 also returns the rock shaft 62 to its original position where it is held by parts associated with the detector mechanism. This construction is especially adapted for use with the Brinton stop motion. inasmuch as the detector mechanisms herein mentioned are well known, it is believed to be unnecessary to illustrate them.

Attention is particularly directed to the fact that in all of the arrangements above described the machine is stopped through power furnished by the rotating cam 24: and since this part is driven from the main driving mechanism of the machine there is always ample power to operate the stopping mechanism. Consequently, the construction provided by this invention is exceedingly reliable in operation. A further advantage of this construction is the simplicity of the resetting action and the fact that both the controlling mechanisms, while responsive to independent emergency conditions arising in the operation of the machine, operate through the same chain of connections to stop the machine. Any unnecessary duplication of the parts, therefore, is avoided.

lVhile I have herein shown and described the best embodiments of my invention of which I am at present aware, it will readily be appreciated by those skilled in this art that these embodiments may be modified in many particulars without departing from the spirit or scope of this invention.

What is claimed as new is:

l. A stop mechanism for a knitting machine comprising, in combination, a latch mounted to be engaged by displaced sinkers, a member normally restrained by said latch, means brought into operation automati cally by the movement of said member when released by said latch to stop the machine.

2. In a knitting machine having a needle cylinder, the combination of a power driven part mounted adjacent to said cylinder, a latch mounted to be engaged and moved by displaced sinkers, a member normally restrained by said latch, and means brought into operation automatically by the movement of said member when released by the latch to utilize the movement of said part to stop the machine.

3. A stop mechanism for a knitting machine comprising, in combination, a latch mounted to be engaged by displaced sinkers, a member normally restrained by said latch, mechanism normally at rest for disconnecting the machine from its source of power to stop the machine, and means brought into operation by the movement of said member when the latch is tripped to actuate said mechanism.

4. A stop mechanism for a knitting ma chine comprising, in combination. a latch mounted to be engaged by displaced sinkers, a member normally restrained by said latch, mechanism normally at rest for disconnecting the machine from its source of power to stop the machine, and power driven means brought into operation by the movement of said member when the latch is tripped to actuate said mechanism.

5. In a knitting machine having sinkers, the combination of a latch mounted to be engaged and moved by displaced sinkers, a mechanism for stopping the operation of said machine, and means directly under the control ot said latch for actuating said mechanism.

6. A stop mechanism for a knitting machine comprisin a latch mounted to engage and be moved by displaced sinlrers, a member norn'ially held in a substantially predetermined position by said latch but arranged to be tripped when said latch is moved by said displaced sinlrers, a power driven part, a second part arranged to be operated by said power driven part, the cooperative relationship between said parts being; controllec by said member, and connections through which the motion of said second part is transmitted to stop the machine.

7. ln a knitting machine having sinkers, the combination of a member mounted to be engaged and moved by displaced sinkers, driving mechanism arranged to be rendered operative or inoperative to drive the machine, controlling means for said mechanism, a spring normally acting through said means to maintain said mechanism in its operative relationship, and power driven means con trolled by said member for interrupting said relationship and stopping the machine.

8. in a knitting machine having; fast and loose pulleys and a bolt shipper for shitting the belt from one of said. pull to another, the combination of a latch arranged to be engaged and moved by displaced sinlters, and a power driven mechanism for shifting said belt shipper to move the belt on to the loose pulley, said mechanism being under the control oi said latch.

9. In a hnittin machine having a stationary needle cylinder and a rotating cam ring, the combination of a latch mounted on said ring; to be er ed and moved by displacec sinker-s, and :chanisin arra ed to be oper ated automatinlly upon said movement oi the latch to stop the machine.

10. in a lz' ittingmachinc havinga stationary needle cylinder and a rotating cam ring, the combination of a latch mounted on said ring to be engaged and moved by displaced sinl zers, a member rotat'ng with sale. cam ring and normally IStl'ilillfitl by said latch, and mechanism arranged to be operated by said member when it is released by said latch to stop the machine 11. ln a knitting machine ylinder and a cam ring mou c d for relative rotation, the combination cit latch mounted be engaged. and n'ioved by displaced sinltcrs, a member engaged by said latch and normally restrained thereby, abelt shipper, ant mechanism arranged to be operated upon the release of said member by said latch to move said belt shipper and stop the machine, said mechanism comprising a yielding connection through which the belt shipping movement is transmitted.

12. a knitting machine, the combination of driving means arranged to be renhr a needle dered operative or inoperative to drive the machine, mechanism for automatically stopping the machine, said mechanism including cooperating parts one of which is driven by said means, and two independent controlling means :lfor said mechanism, each responsive automatically to predetermined changes in operating conditions of the machine, and each including a latch normally holding said parts out ot cooperative relationship but operative when released to enable said parts to assume their cooperative relationship and thereby to stop the machine.

13. in a knitting machine, the combination of drivin means arranged to be rendered operative or inoperative to drive the machine, mechanism for automatically stop ping the machine, said mechanism including cooperating parts one of which is driven by said means, and two independ nt controlling means for said mechanism, each responsive automatically to predetermined changes in operating; conditions or the machine, a manually operated device, and resetting means for said mechanism arranged to be operated by said device.

In a knitting machine, the combination oi oriving means arranged to be rendered operative or inoperative to drive the machine, mechanism for automatically stopping the machine, said mechanism includingcooperating parts one of which is driven by said means, said parts normally being held out of cooperative relationship to eacl.

other, and two independent controlling means for said mechanism each responsive aat-omati nly to predetermined changes in operating conditions in the machine, said means controlling); the movements oi said respective parts into cooperative relationship to each other.

15. ln a mitt-i119, achine, the combination oi mecl'ianism for automatically stopping the machine, said mechanism including cooperating parts one which is constantly driven in a lined path while the machine is in operation, and two independent controlling means for said mechanism each responsive automatically to predetermined but diilerent changes in the operating conditions of the machine, one of said controlling means including a latch operative to hold said power driven partnormally out o't its cooperative relationship to the other of said parts, and the other oi said controlling incans including a latch holding the other of said parts in an inoperative position, whereby when either of said controlling means is operated said parts are brought into cooperative relationship to each other and the machine is stopped.

16. In a knitting machine having sinkers, the combination of a member arranged to be engaged and moved by displaced sinker-s, driving mechanism adapted to be rendered lit) operative or inoperative to drive the ma chine, means for normally retaining said driving mechanism in its operative condi tion, and mechanism for utilizing the power of said driving means to stop the machine, said mechanism being arranged to be brought into operation by a movement of said member.

17. In a knitting machine, the combination of driving mechanism arranged to be rendered operative or inoperative to drive the machine, a latch arranged to be released by displaced sinkers, two cooperating members normally held out'of cooperative relationship to each other by said latch, one of said members being driven by said driving mechanism, means ope *ative automatically under predetermined conditions to trip said latch, whereby said members are brought into cooperative relationship to each other, and connections for utilizing the motion of said members to stop the machine.

18. In a knitting machine, the combination of driving means adapted to be rendered operative or inoperative to drive the machine, two cooperating members, one of which is driven by said driving means, a latch normally holding the second of said members out of cooperative relationship to the first member, means operative automatically under predetermined conditions to trip said latch whereby said second member is brought into cooperative relationship to the first member, connections for utilizing the motion of the second member to stop the machine, and a single means for re-setting said connections, said latch, and the member released by the latch.

19. In a knitting machine, the combination of high speed, low speed, and loose pulleys mounted side by side, a belt shipper for shifting a driving belt from one of said pulleys to the other, a spring connected with said shipper and tending to hold it in position to keep the belt on the high speed pulley, a rotary cam controlling the movement of said shipper by said spring, a member connected with said shipper and arranged to be actuated by a rotary member of the machine to move said shipper in opposition to said spring, said members being normally held out of'cooperative relationship to each other, and means arranged to be brought into operation automatically by emergency conditions in the machine for causing said rotary member to actuate its cooperating member.

20. In a knitting machine, the combination of high speed, low speed, and loose pulleys mounted side by side, a belt shipper for lifting a driving belt from one of said pulley to the other, spring connected with shipper and tending to hold it in posito keep the belt on the highspeed pulley, a rotary cam controlling the movement of said shipper by said spring, a member connected with said shipper and arranged to be actuated by a rotary member of the machine to move said shipper in opposition to said spring, a latch mechanism normally holding said members out of cooperative relationship to each other but arranged to be tripped automatically under emergency conditions, and another latch arranged to hold said belt shipper in the position to which it is moved by said member,

21. In a knitting machine, the combination of fast and loose pulleys, a belt shipper for shifting a belt from one of said pulleys to the other, a spring connected with said shipper and tending to hold it in position to keep the belt on the fast pulley, power driven mechanism arranged to be brought into operation automatically under emer gency conditions to shift said belt on to the loose pulley, a spring through which the movement of said power driven mechanism is transmitted to said shipper, a latch for holding said shipper in position to keep the belt on the loose pulley, and resetting means operable after the belt has been shifted on to the loose pulley to restore the parts to their original relationship, said resetting means including devices for releasing said latch.

22. In a knitting machine, the combination of fast and loose pulleys, a belt shipper for shifting a belt from one of said pulleys to the other, a spring connected with said shipper and tending to hold it in position to keep the belt on the fast pulley, a rock shaft having connections with said shipper whereby a rocking movement of said shaft is transmitted to said ship or and shifts the belt on to the loose pul ey, power driven means arranged to be brought into operation automatically under emergency conditions to rock said shaft, and a latch for locking the shifter in position to hold the belt on said loose pulley.

23; In a knitting machine, the combination of fast and loose pulleys, a belt shipper, for shifting a belt from one of said pulleys to the other, a spring connected with said shipper and tending to hold it in position to keep the belt on the fast pulley, a rock shaft having connections with said shipper whereby a rocking movement of said shaft is transmitted to said shipper and shifts the belt on to the loose pulley, an arm carried by said rock shaft, a constantly rotating member arranged to engage said arm under predetermined conditions, a spring tending to move said rock shaft into position for the engagement of said arm by said part, a latch normally restraining said movement of the rock shaft, and means arranged to be operated under emergency conditions for automatically tripping said latch.

24. In a knitting machine, the combination of fast and loose pulleys, a belt shipper for shifting a belt from one of said pulleys to the other, a spring connected with said shipper and tending to hold it in position to keep the belt on the fast pulley, a rock shaft having connections 'ith said shipper ivl'iereby a rocking IHOVGPZQll'h of said shaft is transmitted to said shipper and shifts the belt on to the loose pulley, an arm carried by said rock shait, a constantly rotating member arrangeo to engage said arni under predetermined conditions, a spring tending to move said rock shaft into position for the engagen'ient of said arm by said part, a latch normally restraining said iovenient of the reel: sha t, means arranged to be operated under emergency conditions for auton'iatically tripping; said latch, a second latch for locking said belt shipper in position to hold the belt on the loose aulle Y a resettin lever 1 V is and connections arranged to be operated by said lever for releasing the second latch and resetting said roe-l; shaft and the first latch to their initial positions.

In testimony whereof have hereunto signed my name to this specification.

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