US1460003A - Stop mechanism for rotary box looms - Google Patents

Description

June 26, 1923.

J. E. wAGl-:MANS ET Al.

STOP MECHANISM FOR ROTARY BOX LOOMS Filed June 8, 1914 2 Sheets-Sheet l June 26, 1923. 1,460,003

J. E. WAGEMANS ET AL STOP MECHANISM FOR ROTARY BOX LOOMS Filed June s, 1914 2 sheets-sheet 2y Patented June 26, 1923.

NlTED STATES JOSEPH EMILE WAGEMANSAND eusravE rEnEwYn, or BRUSSELS, BELGIUM. y

STOP MECHANISM FOR ROTARY BOX LOOl/JS.`

Application led June 8, 1914. Serial No. 843,856.

(GRANTED UNDER THE PROVISIONS F THE ACT 0F MARCH 3, 1921, 41 STAT. L., 1313.)

To all 'whom t may concern: Y

Be it known that we, JOSEPH EMILE WAGE'- MANS and GUSTAVE LEDEWYN, subjects of the King of Belgium, residing at Brussels, ,Belgium, have invented new and useful 1mprovements in Stop Mechanism for Rotary Box Looms, of which the following is a specification. y

In looms as hitherto constructed and more l0 particularly in the looms known as rotary box looms, the loom is stopped automatically when a weft thread breaks or when a cop is exhausted bythe direct action of the fork carrier upon the clutch lever.

The present invention has for its object improvements enabling the loom to be run continuously and without stoppage when a weft thread breaks or a cop is exhausted and to bring the following shuttle automat 20 ically into operative position relatively to the warp. p A further object of the invention is a device for regulating the action of the regulator when a weft thread breaks or a cop is exhausted in such a manner that the loom rotates idly until the following shuttle has been brought into the operative position in order to avoid missed wefts or faultsin the fabric.

30 Another object of the invention consists in automatically stopping the loom when all the shuttles have operated, the operator being unable to restart the loom until the barrel has been recharged.

The invention is illustrated in the accom` panying drawings, in which:-

Figure 1 is a diagrammatic front elevation of a loom embodying the present improvements.

Figure 2 is a corresponding plan.

Figure 8 is a side elevation of the loom viewed from the left hand side of Figures 1 and 2 Figure 4 is a similar view from the right hand side.

1 designates the frame of the loom.y

In weft replenishing looms as ordinarily constructed, the fork carrier 2 carries the fork 3, and when a weft thread breaks or a cop is exhausted, the latter engages a hammer 4, which is given an oscillating movement by the action of an eccentric 48 mounted on a driving shaft 49. This causes the carrier to actuate a bar 6, and thereby operate a clutch lever 5.

ln the improved loom whichl forms the object of the present invention, the bar 6 is given a special form (see Figure 2) andno longer influences the clutch lever 5 when it isrocked about its pivot 7. Here the oscillations'of the bar 6 serve to cause the free extremities of two levers 8 and 9'to oscilla-te; of these levers,8 is fixed at its lower end to a vrod passing along the whole side of the loom and journalled in the two extreme uprights of the frame,`while the other lever 9 is fixed by its lower end to a rod 11 parallel with the rod 10 "and also journalled in the two lateral uprights of the loom.

`On the left hand sido of the loom upon the rod 10 a lever 12 is fixed; this lever is lifted by the rotation of the rod 10 produced by the oscillation of the lever 8 and will lift the retaining pawl of the usual regulator 13 and revent the winding of the warp of the fabric `when the device described has functioned as a result of thebreakage of the weft thread or the exhaustion of a cop, causing the fork carrier 2 to act. The object of this arrangement is to` revent missed wefts or faults as willr readi y be understood.

To the left hand end of the rod 11 one of the arms of a bent lever 14 is fixed, the free end 15 of its other arm bearing against the upper extremity of a lever 16 when the rod 11 rotates; this lever 16 is pivotedat 17 at .its lower end and is normally drawn towards the front of the loom by a tensionV spring 18. The upper end of. thislever 16 ends in a hook 19. Upon a fixed part of the frame 1, one end of a lever 20 is pivoted" Fries.

at 21 "while its other free end carries/a catch 22. By means of a roller 23 this rod 21 rests on a cam 24 mounted at they extremity of the driving shaft49 of the loom.' In its continuous rotation, this shaft 49 periodically lifts the rod 20. Normally when the rod 20 is` lifted, itsy catch 22 does not engage the4 hook 19 on the lever 16 but when the rod 11 has been rotated by the action of the fork carrier 2 when a weft threadhas broken or a cop has become exhausted, this rod k11 will press the bent lever 14 whose end15 will bear against the hook 19 to cause the latter to engage the catch l22 in opposition to the action of the spring 18. rlhe rod 2O being then lifted by the cam 24, the link 16 will also be lifted vOne end of atWo-armed lever'25 is jointed to the lower end ofthis link 16; this lever is pivoted at 26 and its other extremity is normally maintained raised by a tension spring 27 'attached to a fixed portion of the frame. `The lower end of a rod 28 is jointed t0 the raised extremityof the lever arm 25; this rod 28 issuitably guided and its upper extremity carries a hook 29. l/Vhen the extremity of the lever 25 is depressed in opposition to the action of the spring 27 by the j lifting ofthe hook 19 engagingthe catch 22 as explained above, this hook 29y engages a tooth Lof a wheel 30, integral with the shuttle barrel 31 and causes this wheel to rotatev to the extent ofone toothy in such a manner that afresh shuttle is presented and driven.

into the shed to; continue the weaving. The constructional form of the wheel 3() and of the barrel 31 isgenerally known and does not'need a more detailed description.

From what has been stated it will be seen that when a weft'thread breaks or a cop is exhausted, the following shuttle will vbe brought automatically to the operativey position and driven into the shed and that during the short space of time necessitated for these automatic operations, the regulator will prevent any weft threads from being missed inthe fabricby the momentary stoppage of thewarp upon the yarn beam. As soon as afreshshuttle has been projected `.intoitheshed, the fork 3 will be lifted and no longer displaced by the hammer 4 in such a manner thatthe rods l0 and l1 will no longer be actuated and that all the active parts described will yresume their normal position of lrepose until a fresh breakage oc curs or the recharging of a shuttle 1s ren-I of an arm 34 whose other end is keyed upon' a sha-ft 35 extending throughout the entire side of the loomk and suitably journaled in the lower part of the lateral uprights of the loom.` 'When `the operator has fully charged the barrel, he arranges it in such a i manner that the pin 3l comes immediately above the hook 3 2 so that this hook will only engage thepin when all the shuttles have acted,that is to say when the barrel has effected a complete revolution. When the link 28has brought all the 'shuttles into action in 'successiomvthe pin 3l will encounterthe hook 32 which will be lifted and cause the shaft to rotate. v l' Upon vthe right'hand en d of this shaft 35 va shortlink 36 is fixed and at the other end of this link, the lower end of an upwardly directed `rod 37 is journalled; the upper end of this rod resents a fork 38 (se-e Figures 2 and ll). rhe free extremity of rocking arm 39 pivoted to the clutch lever 5 of the loom rests in this fork. When the lever 37 is lifted by the rotation of the shaft 35 produced by the engagement of the hook 32 with the pin 3l', this arm `39 will also be `lifted andits free end will thus encounter the batten el() (Figure or an appropriate stop lll fixed upon the batten. The blow produced by the hatten on the extremity of the Varm 39 will declutch the operating lever 5 uponl which this arm is mounted and the loom will automatically stop.

lWhen the loom has stopped, the operator i cannot release the clutch lever until the barrel has been re-c-harged, as otherwise the pin 3l will maintain the hook 32 raised, so that the operating lever is in the declutched position.

In'looms as hitherto constructed, if for example, the operator should inadvertently project into the shed a shuttle without a weft the loom would stop automatically.v

With the device described above the loom wouldnot be stopped, but would continue to rotate in actuating the hook 29which would automatically render a freshshuttle opera-r tive and so on in succession until a full shut-4 tie has been projected onto the shed.

During this change of shuttle, that is to say until the moment at which a shuttle provided with thread has been driveninto the shed, the warp `of the fabric is not woundowing to the action ofthe regulator 13 as already explained. It follows that theflooin acts automatically'and without producing the least fault in the fabric so long as the barrel contains a shuttle readyrto act, the loom being automatically stopped'only when lall the shuttles of the barrel have been driven into the shed. The work of the oper.- ator is therefore greatly reduced, 4,

When the barrel is being recharged the end of the thread of each cop is attached `by' the operator to a knob or projection on a fixed portion of the frame in proximity to the barrel in order to cause the cop tonn wind when the shuttle is driven.

It should be understood that the invention described above is in no way'limited tothe embodiment here described by way of example and diagraminatically illustrated in the drawings, as numerous modifications might be introduced into the forms,l proportions and methods of actuating the several elements without departing from ,the prinr` ciple of the invention.

Ve claimt, 4 1. In a loom, the combination of a lever mechanism, a rotatable shuttle barrel a stop on `the lshuttle barrel which 'actuates said lever mechanism whenall the shuttles have `loo acted7 an operating lever, connections between said lever mechanism and operating lever7 to stop the loom ior the purpose of recharging the barrel, said parts being arranged so that the operating lever can not again engage until the barrel has been recharofed.

Q.tln a loom, a carrier actuated when a weft thread breaks or a cop is exhausted, a lever operated thereby, a rotatable shuttle barrel7 means in connection with the lever for producing the rotation of the shuttle barrel, an operating lever for starting and stopping the loom7 and means for actuating the operating lever only when all of the shuttles in the barrel have been used, said means comprising a projection rotatable Inftestimony WhereotI We have signed our names to this kspecification in the presence of two subscribing Witnesses.

JOSEPH EMILE WAGEMANS. GUSTAVE LEDEWYN.

Witnesses: n

GEORGES DE REST, CHAs; ROY NASMITH.

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