US1644647A - Stop motion for looms - Google Patents

Description

.'4 1 z'. ect 9 7 A. R. JONES STOP MOTION FOR LOOMS Filed May 15. 1926 2 snets-sheet 1 i: A I

HJH- .H m @ff m 1o A mm INVENTOR.- .Hama R JFWS,

ATTORNEYS.

Wl TNESSES Vlr4 2.

Patented Get. 4i, 1927.

faire. sfr

Anon 3s. JONES, on' Mimi/'intanewannsnx'assioivon fro iviin L viLI'iEA MANUFAC- Tonine COMPANY, or MrELviLLE, naw JERsEY, A coEPonATioiv or NEW JEEsEY.

sroriviorroi Eon Looivis.

Application filed May 15,

rlhis invention relates to looms, more particularly to the type known as automatic looms which are characterized by mechanism for automatically replenishing the lilling'inthe shuttles in the event of exhaustion of a bobbin or breakage of the filling. 1n such looms, one or more forked detectors are usually employed, these, lby cooperation with grids on the lay, governing actuation of the replenishing mechanism whereby bobbin substitution is effected; and interposed means `are also provided to automatically trip the stop lmechanism of 'the' loom it inisthreading should occur incidental to Vtwo or three successive bobbin replacements,` A loom` of the kind briefly describedA will, therefore, continue. inoperationso long as the gridsv are occupied by the filling thread. But, it'willl be seenthat otherl obstructions before the grid, suchy for Xample as ao cumulations or" lintI (ordinarily known as iiy,2). willalso maintain theloom in action notwithstanding the absence of' the filling.

The main object of the present invention f is to provide for automaticvstoppage ofl the loom in theevent orn the contingency `just noted,iandto enable this to-be accomplishel without' affecting thebobbin repl'enishingy mechanism; or, in other words, without entailingseveral substitutions oi bobbins before thel'oom is actually stopped. y

Afurther object of 4my invention is to attain the above desideratum in a very'simpleand inexpensive means having the form of anattachment capable of being applied tov existent, looms without necessitating- Vany alterations either in their construction or no rmahmodefof operation.

In the drawings"I` have shown my invention embodied in an automatic loom of the typeilisolosed in U. S. Patent No. 789,291, granted to Jonas Northrop under date of May 9, 1905, Fig. I being a fragmentary plan view of lthe ,loom corresponding to Fig.

' I lof the patent with portions broken away and in section to better illustrate certain important details which would otherwise be hidden. v

Fig. II is a staggeredsoctional view taken asindicated by the arrowed line Hnin Figxgl. y

FigIIIis a view similar to the preceding illustration' showing some' of the parts 'ditferently positioned, and, y

Fig. IVis 'a fragmentary' detail plan view 1926. serial No. 109,212.

taken as indicated byv theiarrows Ill-1VVv in FiglHr. With reference to the drawings, l10 designates the lay of the, loom which carries the reed 11 and moves toward andy-away; from.,

its. f

the: breast beam `12 in theperformance of. its usual tunction.L At opposite ends, the z lay supports. the boxes 18, 14k between whichA the shuttle` 15 is thrown back and. forth, to draw theiilling thread-` across the. face of the reed 11.' Mounted :on thelay 1,0 adjacent the inner ends ofthe shuttle boxes 13, 14, are the grids, l, 17 that oo-k operate. respeotively`with theyforks 18, 19; of they main and, auxiliary detector devices 20, 21 supported byrtheibreastbeamf12 proff viously referred to. v The auxiliary `detector device- 21 is not especially concerned` withv the*presentinvention andlgwill not therefore be:k furtherreferred to herein. The filling fork18, Aofthe lmain detectord'evice 2O is pivoted Vat y22 between the.; side.4 bars of a slide 23 vthat has `capacity fon horizontal reciprooation in aguide 24 Vbolted to the breastbeam 12.v The'filling jerk l8yhas 'a rearwardly projecting tail loop-25 adapted to cooperate with. a hooked element 26-piv oted to an actuator 27 which is constantly vibrated; through sui-table .1 connections (not, shown.) with the cani shaft'lof the loom. From-FigfvfH it4 will-be.:observed that the element4 26=has. .two hooks marked 28, 29 occupying di-iferent vertical planes, the. lowerl hook being slidlingly supported on across bar 30 ofthe. slide 23. Normally. the filling fork 18`-snshifted tov the -fullline posi-tion oflig. ll when lilling is presentbetore the gridil.- on .thel-ay 10; butin-the absence of, theI filling, said forkwill assume the dot-- anddashfline position in Eigzl as a, oonsequence of which its tail loop 25 will engage the lowerhook 28 ofthe element 26` as the actuat01m27y moves forward. Then such engagement takes place, the/slide 23 is carried forward by the actuator 27 in opposition to the action of a leaf spring 31 QF ig. Il), and the imparted vmotion transmitted, tlifroughan armf32fin. thef path of said slide, to the rock shaft which-operates the lillingreplenishment mechanism :Ulis

whereof a portioniisfshown'at -34-.inFig. Y

ilu

ations of the lilling replenishing mechanism before the loom is brought to a stop, a latch carrier is provided, the same having a series of depending lugs Which cooperate successively With corresponding notches in the slide 23 When the latter is moved While the latch carrier 35 is temporarily detained against longitudinal movement, all as described in the patent hereinbefore referred to. In addition to the depending lugs mentioned, the latch carrier 35 is equipped at one side With a special lug 36, which, after several successive actuations of the slide 23, takes a position to the front (left side in Fig. II) of the inner extremity of the knock-off lever 37 pivoted at 38 to the breast beam l2. The opposite extremity 39 of the knock-olf lever 37 engages the belt shipper handle 40 Which is normally held locked in a lateral recess 4l of its slotted holding plate 42.` Thus on the last actuation of the slide 23, the special lug 36 of the latch carrier i 35 will function to throiv the knock-ofi" lever 37 and thereby release the shipper r handle 40 to stop the loom.

Thus far I have described the normal operation of a standard loom capable of electing automatic bobbin substitution consequentv upon failure of the filling thread through exhaustion of a previous bobbin B in the shuttle, or for any other reason. As hereinbefore pointed out, the purpose of my 1 invention is to effect automatic stoppage of II and III and it is limited in its longitudinal movement by a supporting stud 46 engaging through a slot 47 therein, said stud projecting laterally from a small bracket 48 attached by screws-to the guide 24 at one side. The tail of the thrust bar 45 rests upon the knock-off lever 37 and is undercut as at 49 for cooperative engagement with the latter. The inner end of the thrust bar 45 is recessed somewhat as at 50, and lies closely contiguous to the upper hook 29 of the element 26, as shown to bestY advantage in Figs. I and IV. vWith special reference' to Figs. III and IV it will be observed that when the cross bar of the tail loop 25 on the filling fork 18 becomes lodged in the upper hook 29 of the element 26 in consequence of an abnormal obstruction before the cooperating grid 16 on the lay 10, it is supported in a position in readiness to enter the recess 50 of the thrust bar 45. As a result, the thrust bar 45 will be obliged to follow the succeeding forward movement of the slide' 23, and, in so doing, Will com municate its movement direct to the knoclroli' lever 37 thereby to dislodge the belt shipper handle 40 from the lateral notchl 4l of the slot in the holding plate 42 and automatically stop the loom Without entailing actuation of the filling replenishing` mechanism 34. In this Way I not only avoid Waste of time and annoyance, but prevent losses attendant upon imperfections in ing replenishing mechanism,.a belt.shipper handle, a filling detector cooperative With a grid on the lay, and interposed means determining successive operations of the illing replenishing mechanism previous to tripping of the belt shipper to stop the loom, the combination of thrust means carried byl the loom breast beam and operative to trip 'the' belt shipper handle in the eventof an abnormal obstruction other than the filling before the grid Without entailing actuation of the filling replenishing mechanism aforesaid.

2. In an automatic loom comprising filling replenishing mechanism, a belt shipper handle, a illing detector cooperative With a grid on the lay, and interposed means determining successive operations of the filling replenishing mechanism previous y to tripping of the belt'shipper to stop the loom, the combination of a thrust member' carried by the breast beam and adapted'to be actuated by the tail of the filling detector When moved to an abnormal extent in the event of an abnormal obstruction other than the filling before the grid to trip the belt shipper handle Without entailing actuation of the iilling replenishing mechanism.

3. In an automatic loom comprising filling replenishing mechanism, a belt shipper handle, and a pivoted filling detector cooperative With the grid on the lay, the combination of a shiftable element With hooks in different planes to respectively engage the bail of the detector in the absence of filling before the grid and when said detector is swung to an abnormal extent due to presence of an obstruction larger than the {illing before the grid, and a thrust bar lying in the path of the tail of the detector When in the abnormal position and adapted to trip the belt shipper handle Without entailing actuation of the lilling replenishing mechanism.

4. In an automatic loom comprising lilling replenishing mechanism, a pivoted filling detector cooperative With the grid on the lay, a vibrating actuator With a hook element adapted to engage With the' bail of the detector in absence of the filling before the grid and also When said detector is swung t0 an abnormal extent by an obstruction larger than the filling before the grid, a belt shipper handle, and means determining successive operations of Jche filling replenishing mechanism previous to tripping of the' belt shipper to stop the loom, the combination of a thrust bar carried by the loom breast beam and operative, when the detector is swung fo the abnormal eX- tent as aforesaid, to trip the .be-lt shipper handle Without entailing actuation of the filling replenishing mechanism.

5. In an automatic loom comprising filling replenishing mechanism, a pivoted filling detector cooperative With the grid on Jthe lay, a vibrating actuator with an element having hooks in different planes, to engage the tail of the detector in the absence of filling before the grid and also inthe event of an abnormal obstruction before f said grid, a belt shipper handle, and means determining successive operation of the filling replenishing mechanism previous to tripping of the' belt to stop the loom, the combination of means adapted to be engaged by the tail of the detector, When swung to an abnormal extent,to trip the belt shipper handle Without entailing actuation of the filling replenishing mechanism.

In testimony whereof, I have hereunto signed my name at Millville, New Jersey, this seventhday of May, 1926.

AARON R. JONES.

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