US1631067A - Starting and stopping mechanism for looms - Google Patents

Description

May 31, 1927. 1,631,067

W. SEVILLE STARTING AND STOPPING MECHANISM FOR LOOMS Filed Feb, 7, 1927 3 Sheets-Sheet 1 byzndwkw May 31 1927. w. SEVILLE 1,631,067

STARTING AND STOPPING MECHANISM FOR LOOIlS Filed Feb. 7. 1927 3 Sheets-Sheet 3 Fig. 5.

InVemor. William Seville I b /M MIW Patented May 31, 1 927.

K321411511! L L-a 9 H EP A A U ETT s q o'a o, DRAPER 603F934? s'mn'muo amp STOPBING MEoHigfitsi/r 1 l on-Looks.

* fpr iqat on fi d E rua y This invention relates to in prove lnentsv in the construction andoperatiohof means for ar d controller by :wli'ich the brake may a ly be appl ed c in itlent lv With t e throwing off of the power-and released-When the; power. is'o f: 1 I A familiar: type ofysuch nechanis i lo ed t e; pa nt to A ble O granted October. 8,, 19,01, and, while the; pres:

cnt invent on s in its broader aspects 0t wi aap ieet a i s mo e. pa ticu arly for the purpose of i nproyi g the construction and operation of th s general typeof mechanism and topsecuring. advantages and iiesu lts not hitherto obtairiable i "In he @Ile a im of a 0- it is des ab e that the brake he releasable independently oihe pe ati n -116 sh paerlbe au e t t qe mlv n essa y ei r t m h loom over hby hand or to allow the [power o e thrown on alitt a ti e h s n c s a y n P e ing t e o ds mat i g he pick, properly positioning the shuttle and oth r s a jus in the epa at on of t looin. Variou mi a are rak -commonly employ d f l9l2Pil1gfl1B lom If th shuttle is improperly hoxed a protector mechanism is commonly employed acting through a fr g: It v u p re ksa'watp t p-mo ion a t t r ugh sui abl c nnec n If he filling breaks orhecomes exhausted, a weft iorlg act through suitable connections. S a i s e irabl to stop the-199mm h r m difi ren pasitions w th espec to the loom. In such vand other cases it is obvio sly des ab e hat the shippershall throw olf the power and'the brake shall he api tl a t e sam t m o also, in t-arting' the loona,-the brake ini st be ffi'ltfi-fififi s multa w ly it-l o i aKlYa ce'Q-f he h owin a of he po e n, whether th aper on o s oppin and starting thelop i is co trollgd byhand o ,--.er-teamti ally, i i Of mP-Qr that t yshipping bel/ t i he be applied o re e d: e b ake 11 7, 1927. Serial No. 166,281.

the operatio SllfiLllbB positive, certain and und tlmcont l: of a m imum ertion of force. 1

. Itis object otthe present invention to provide for all these and other require nrents by simple; and efficient principle of construction. a

is. file abje Of the nvent n u th to provide a construction having, anpri ciple ot' operatiou which permits of; such leverage ratios as to permit the operationsof starting and stopping to be efi'ected by the applica tijojn oi-small amourts of force, either by a hand orautomatically. f also desirable that th; 'loo nj when. stopped shall stopator-near some definite point in its cycle-otn ov e rnent and it is a turther ohject of the invention to provide a n e chan s i'acting to secure this-result.

Tl he actuator is con rrionly voperated or rnpyed to its'bifiakeoapplying position'b'y a sprir g and aturther. object of thepresent nvent on is to' ernp'loyjthe impulse-of this wrangle-accelerate the moveme'ntof "the brake entr l e to; app y ng position and cqusequentlyto assist in a prompt and defitaap l eati n of th a e- Another, feature of the invention resides in the; employment of a latchinginechanism n eans'of which the brake actuator is held against the'power of its spring, locked in releas ngpositiomand Which, by the applicat on of a comparatively small force exerted in thean ovement of the controller from releasing to, applying; position, is unlocked.

.- Theseand otllerobjects and features of the invention will appear more fully from the accompanying description and drawings and will h particularly set forth in the claims. 'a 3 the generalconstruction and operation of 1a -loom,' of the usual means for connectinghnd disconnecting powerto and from the twain-"Shaft, of the irari'ous mechanisms e111 lployeTd for automatically initiating the stopping of the loom upon tlie\mi'spositioning of the shuttle,- the breakage or" failure of a AS23113 Dr fillingof the usual brake mechanism'and of other features are well known "andtamiliar to t-hoseskilled intlie art, it is :onlymecessary for thezpurposes of this in- Q tiQn There to illustrate i and describe those features OfZCOIlSl'iIHCtiOII with which the invention 1 ,isimore particularly concerned. 5

form of construction embodying the present invention embodied therein.

Fig. 2 is a front elevation of the loom partially broken away.

Fig. 3 is a top plan view on a larger scale of the shipper and controller mechanism shown in Figs. 1 and 2.

Fig. 4 is a detail in side elevation and partially broken away of the constructionshown in Fig. 3 with the controller'and actuator in applying position.

Fig. 5 is a detail in cross section taken on the line 55 of Fig. 4.

Fig. 6 is a detail in cross sectiontaken on the line 66 of Fig. 4. v

Fig. 7 is a detail in cross section taken on the line 77 of Fig. 3. V

So much of the loom'as is illustrated is of the well known automatic Northrop type having the side frames 1 and 2, the connecting breast beam 3, the hopper stand 4 carrying the magazine or hopper 5 and having the main shaft 6 driven from a suitable source of power which may be of any usual. form and is not illustrated.

A bracket 7 is secured to the loom side 1 and is provided with the depending flange 8. A studis rigidly mounted in and projects from the flange 8. This stud preferably preemits a central, polygonal section 9 and cylindrical threaded ends 10 and 11. The central section 9 enters a correspondingly shaped aperture in the flange 8, as shown in Fig. 7, and a nut 12 is threaded on the end 10 and abuts the flange 8. A bearing sleeve 13 having a bore shaped to conform to the section 9 of thestud is mounted thereon and provided with a flange 14 at its inner end which abuts the flange 8, while its outer end projects beyond the section 9 of the stud and is provided at its outer face with a recess. An abutment member 15, the function of which will later be described, fits over the cylindrical end 11 of the stud and is provided with a. projection 16 flttingthe recess in the end of'thesleeve13. A-nut 17 is threaded on to the end 11 of the stud. It will thus be seen that when the nuts-17 and 12 are tightened up, the stud is held rigidly in the flange 8, and the abutment member is held rigidly in a fixed position with the bearing section of the sleeve extending from the inner'wall of the abutment member to the head 1-4 of the sleeve.

The shipper 18 is in the form of a lever having a hub 19 journalled on the bearing section of the sleeve 13. The controller 20 is also in the form of a lever having afihub 21 also journalled on the bearing section of thesleeve 13. The hubs 19 and 21 are slightly less in total thickness than the length of the bearingpo-rtion of the sleeve The upper and longer arm22 of the shipper terminates in a handle by which it may readily, be operated, while the lower and shorter arm provided at its end with an aperture 24 from which a connection may extend to any suitable means for throwing on and ofl the power, it being understood that when the shipper is in the position shown in Figs. 1, 2 and 3', the power is on, and when it is swung to the opposite position or to the left, viewing Fig. 1, the power is oif. r p

The brake mechanism illustratedis shown as'a brake wheel 25 keyed to the main shaft.

and at the 'other end at 28 to a link 29' piv-' oted at 30 to an upwardly extending arm 31' of a bell crank lever fulcrumed at 32 to the loom frame.

bell crank lever extends substantially hori- Zontally to a point beneath and to the rear of the fulcrum stud ofthe controller and shipper. A longitudinally adjustablelmk comprising the bar 34 threaded into the lower end of the flat plate 35 is pivoted at its lower end to the free end of the arm 33 and extends vertically upward therefrom past and to the rear of the fulcrum of the shipper and controller. An 1 actuating spring 36 herein shown as of'the tension type is secured at its upper end to thearm 33 and at its lower end to some fixed part of the loom. It will be seen that the spring acts through the bell crank lever 31, 33 and the brake band to apply the brake, and that an upward pull on the link 34, 35 acts to release the brake. The bell crank lever 31, 33 with its operating spring 36 and the lever 34, 35 therefore constitute a brake actuator.

A latch 37 is pivoted at its upper end at 38 to the upper end of the plate 35 of the link and is provided atits lower front end with a notch or recess '39 adapted to engage a small antifriction roller 40 journalled'at 41 in the rear end of the abutment member 15 already described. A helical spring"42 The other arm 33of the seated in a recess in the outer face of the link plate 35 engages a stud 43 secured to and projecting inwardly from the latch 37 and acts to swing the latch forwardly or toward the abutment. The construction is such that when the actuator is moved to releasin g position by an upward pull on the link 34, 35 in opposition to thespring 36 T and-the notch 39 comes opposite the roller 40, the latch will swing forwardly into engagement withthis roller on the abutment and thus lockthe actuator and brake in released position. It'will be seen that in this position no strain is placed upon the controller or shipper to hold the brake released wanes? against thetension of the spring36; It will also be seen that in order to apply thelbrake andv allow the actuating spring 36 to act mechanisnnis so arranged that only a small amount of force is required, due to 'the principle ofleverage ratios employed, to place the parts in locked position'and only a small force isrequired to unlock the latch and:

permit the application of the brake. 1 In the preferred construction illustrated, both; of these things, that is, the raising of the, latch to locking position and the unlocking of the latch, are done through direct connections with the brake controller 20. To enable the link 34, carr in the latch to be raised,

an arm 44 is extended rcarwardly from the controller 20 and isprovided at its rear end with an arcuate slot 45min the bottom of which is. an adjustable screwlockedwith a checknut and engaging a pin 46 secured to and projecting inwardly from the link plate 35. To knock off the latch 37 from the abutment 15, when in locked position, a knockoff link is employedconnecting the controllei-"and the latch. This'knock-oifv link is shown as an adjustable two-part device comprising a bar-4'Zslotted at 48 at its rear end to; engage a pin 49 secured in .the link 37 near its lower. end and'having at its forward end a hub-SOQthrough which passes a threaded L -shaped-irod 51, carrying check nuts 52 by which it-is adjusted, in the hub and which at its forward end is jour nalled in a sleeve 53 rigid with and projecting laterally from the controller. 20 above its fulcrum. The slot 45 permits limited, relative movement longitudinally of the actuator link between the controller arm 44 and the pin 46 and thus enables the control.- ler 20 to be swung sufliciently from releasing position to knock the latch off the abutment. lmn'iediately, however, the latch is knocked from the abutment, the pin 4 6 will engage the lower end of the slot and the impulse of the actuator spring 36 will acceli crate the latter portion of the movement of the controller toapplying position. The slot 48 in the knock-off link permits the necessary swingingmovement of the latch 37 to ride upward past the roller 40 and then into. lockingposition when the link 34, 35 is raised and the latch 37 is providedat ,the front .with a suitable cam face 54 for this purpose.

Suitable means interposed between the shipper and controller .so arranged that when both the shipper and controller are in the same position and the shipper is swung in either direction, the controller will swing. with the shipper, and so arranged when the shipper is in on position and the'eontroller in re lea P s on an he. n l er' s en shipper. 18'.

swung, to applying. position, tlieshipper will neso e when theshipper isin off? position and, the controller is in. applying position and the controller thenswung. to releasing position astopermit the shipper to be swung independentlybetween off and on positions. In the constructionillustrated, the controller 20 at *itdlower, end is providedwith an arm- 5o extending below its fulcrum which has a projection 56 extending laterallybehind .the

head of a sc ew stud 5 7 ad'ustably mounted l.

in. the lower end of the shipper. At a point position, and so arranged that well above the fulcrumgthe.shipper has pivotally mounted thereona latch 58, the head (If-which is adapted toslide over and engage the front face of a lug 59 projecting laterallyfrom the controller, while the'tail 60 of this latch, when the. shipper reaches releasw ing position, engages a. buffer 61 on the. flange 8 and releases and holds released the latchfrom'thelug 59. r

The usual frog anechanism, not shown, will preferably act against therear facexof the, armo and the 1111p stop, filling fork, or other mechanisms employed, may be cons nectedasusnal at suitable points.

lVhen the loom is to be stopped from the left hand side, the shipper handle 18 isto be employed. Vhenthe loom is to be stopped from the right hand side, a mechm n ly anisrn such as that illustrated may be employed. A-shat't'62 is mounted. in suitable bearings 63 on the loom frame and extends transversely thereof. At the left-hand side this shaft is provided with depending arm 64 having a projection 65 extending in front of the shipper and av projection 66 extending behind a lug 67 on the shipper. At the right-hand side, the shaft 62 .is provided with an upwardly extending arm 68 connected by alink 69 to a lever 70 fulcrumed on a stud 71 mounted igna suitable bracket. 72, in this case shown as carried by the hopper stand It will thus be seen that by mowing the lever I 70 at I the right-hand side of the loomin one direction or the other, the

shipper will beg-moved in the same direction and consequently the same occurrences will take place whether the operative grasps the. handle on the lever 70 or the handle on the -Theprinciplo of inter-engaging means on the controller 20- and the brake aetuator which act, when the controllervis swungto releasing position, to move the brake actuator torelease the brake and permit the latch to en'gagethe abutment, together with the means on the controller which knocks the latch off the abutment when the controller is swungfrom releasingposition and permits the actuator to'apply the brake, enables leverage ratios to be employed permittingthe application of a relatively-small force either to t e lever TOatthe right-hand side ot; h

side of theloom to effect the loom or to the shipper 18,atthe left-hand starting and stopping of the loom.

So also the principle of the knock-oil release of the latch, together with the accelera tion of movement of the controller to brake operation of the shipper, thus enabling the operative to turn the loom over by hand or to throw the power on a little at a time, as may be required.

The connections also enable the parts to be timed so that, when the loom is to be stopped, the application of the brake may begin before the power 'is thrown off, thus ensuring a. still more accurate stopping of the loom at a predetermined point in its cycle of movement.

The invention thus presents a simple, effective, efficient and accurately and easily controlled stopping and starting mechanism for a loom.

Having thus described I the invention, what is'claimed as new and desired to be secured by Letters Patent is 1. Starting and stoppingmechanism tor a loom comprisinga shipper for throwing the power on and oil", a brake, a spring-operated actuator therefor, a controller for the actuator, the said shipper and controller being pivoted side byside upon'a common axis, a fixed abutment,- a latch movably mounted on the'brake actuator and engageable with the abutment when the brake is released to lock the actuator and brake in released position, means acting, when the controller is swung to releasing position, to move the actuator against its spring and allow the latch to engage the abutment and,

when the controller is swung to applying position, to knock the latch off the abutment and allow the actuator to apply the brake, and means interposed between the shipper and controller acting, when both are in the same position and the'shippcr is swung in either direction. to swing the controller with the shipper and, when the shipper is in on position and the controller in releasing posi-' tion and the controller is swung to applying position, toswing the shipper to oil position, and. when the shipper is in ofi''position and the controller in applyingposition and the controller is swung to releasing po-' sition, to permit the shipper to be swung independently between the oil and on positions. I

2. Stopping mechanism for a loom comprising a brake, a spring operated actuator therefor, a pivotally mounted controller for the actuator, a fixed abutment, a latch IHOV? ably mounted'onthe actuator and engage able with theabutment when the brake is released to lock the actuator and brake in on to oil position and from releasing.

to applying position, respectively, latching mechanism acting to lock the actuator and brake 1n releasedpos1t1on, and means act-- mg, when the controller is swung from releasing to applying position, to unlock the latching mechanism and allow the actuator to apply the brake.

4. Starting and stopping mechanism for a loom comprising the construction defined in claim 3 in which, when the latching mechanism is unlocked, the impulse of the actuator spring acts to accelerate the movement of the controller and shipper'to applying and oil positions respectively.

5. Starting and stopping mechanism for a loom comprising a shipper for throwing the power on and oil", a brake, a spring-operated actuator therefona controller for the actuator, the said shipper and controller being mounted tomove together from on to of? position and from releasingv to applying position, respectively, a fixed abut- V ment, a latch movably mounted on the actuatorand engageable' with the abutment when the brake is released to lock the actuator and brake in released position, and means acting, when the controller is moved to releasing position, to move the actuator against its spring and allow the latch to engage the abutment, and, when the controller is moved to applying position, to knock the latch off the abutment and allow the actuator to apply the brake.

6. Starting and stopping mechanism for a loom comprising a shipper tor-throwing the power on and off, a brake, a spring-operated actuator therefor, a controllerfo'r the actuator, the said shipper and controller be ing mounted to move together from on to off position and from releasing to applying position, respectively, a fixedabutment, a latch movably mounted on the actuator and engageable' with the abutment when the brake is released to lock the ac t-uator and brake in released position,-and means acting, when the controller is moved to applying position, to knock the latch ofi' the abutment and allow the actuator to ap- 7 into locking engagement with the abutment,

an arm extended from the controller and engaging the actuator link with a connectlon permitting limited, relative movementlongltudinally of the actuatorlink and a knockoff link connecting the controller and lat-ch, whereby when the controller isswung to applying position, the knock-off link first knocks the latch off the abutment and then the impulse of the actuator spring acts to accelerate the movement of the controller to applying position.

8. Stopping mechanism for a 100m comprising a brake, a spring-operated actuator therefor, a pivotally mounted controller for the actuator, a fixed abutment, a latch movably mounted on the actuator and normally movable into locking engagement with the abutment, inter-engaging means on the controller and actuator acting, when the c0ntroller is swung to releasing position, to move the actuator to release the brake and permit the latch to engage the abutment,

and. means on the controller to knock the latch off the abutment, when the controller is swung from releasing position, and permit the actuator to apply the brake.

9. Starting and stopping mechanism for a loom comprising the construction defined in claim 8, together with a shipper pivotally mounted on the same axis with the controller p prising a brake, a. spring operated actuator for throwing the power on and off, and means interposed between the shipper and controller acting, when both are in the same position and the shipper is swung in either direction, to swing the controller with the shipper, and. when the shipper is in on position and the controller in releasing position and the controller is swung to applying position, to swing the shipper to off position, and,

when the shipper is in off position and the controller in applying position and the controller is swung to releasing position, to'permit the shipper to be swung independently between off and on positions.

10. Starting and stopping mechanism for a loomv comprising the construction defined in claim 3 in which a latch connects the said shipper and controller when in on and releasing position, respectively, I and causes them to move together as specified in said claim and in which means are provided for releasing, and holding released, the latch when the shipper is in off position.

11. Starting and stopping mechanism for a loom comprisingthe construction defined in claim 8, together with a shipper pivotally mounted on the same aXis with the controller for throwing the power on vand oif, a latch connecting the shipper and controller when in on and releasing position, respectively,

' and means acting to release, and to hold released, the said latch when the shipper is in off position.

12. Starting andstopping mechanism for a, loom comprising the construction defined in claim 3, together with a hand operated lever mounted at the side of the loom opposite the shipper and connections therefrom to the shipper to effect the simultaneous movements thereof in the same directions.

13. Starting and stopping mechanism for a loom comprising the construction defined in claim 5, together with a hand operated lever mounted at the side "of the loom opposite the shipper" and connections therefrom to the shipper to effect the simultaneous movements thereof in the same directions.

14. Starting and stopping mechanism for a loom comprising the construction defined in claim '6, together with a hand operated lever mounted at the side of the loom opposite the shipper and connections therefrom to the shipper to effect the simultaneous movements thereof in the same directions.

15. Stopping mechanism for a loom coming movement of the controller tothe actuator.

In testimony whereof, I have signed my name to this'specification.

I WILLIAM SEVILLE.

Images