US840958A - Harness-controlled stop-motion for looms. - Google Patents

Description

PATENTED JAN. 8, 1907.

V. BAINVILLE. HARNESS CONTROLLED STOP MOTION FOR LOOMS.

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PATENTED JAN. 8, 1907.

V. RAINVILLEL- HARNESS CONTROLLED STOP MOTION FOR LOOMS.

APPLICATION FILED H1122, 1906.

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'V. RAINVILLE'. HARNESS-CONTROLLED STOP MOTION FOR LOOMS.

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UNITED STATES VICTOR RAiNVILLE. or NASHUA, NEW HAMPSHIRE, AssIeNoR TO DRAPER COMPANY, OF HOPEDALE, MASSAOHUSEFEQS, A (JOR- PORATION OF MAINE.

HARNESS-CONTROLLED STOP-MOTION FOR LOOl VIS i. a I v PATENkQFFIGE.

Patented Jan. 8, 1907.

Application filed May 22, 1906. Serial No. 3l8'198.

To all whom, it may concern:

Be it known that I, VICTOR RAINVILLE, a citizen of the United States, and a resident of Nashua, county of Hillsboro, State of New Hampshire, have invented an Improvement in Harness-Controlled StopMotions for Looms, of which the following description,

in connection with the accompanying drawings, is a specification, like characters on the drawings representing like. artsy This invention relates to l tom harness-motions, more particularly of the type wherein the reciprocating harness or heddle frames .are provided with detector-heddles usually made of thin fiat steel strips each provided with a warp-eye and longitudinally slotted to receive through them a support or cross-bar forming a art of the frame. As is well .known .to t ose; skilled in the art, such heddles are arranged to have a limited longitudinal movement relative to the cross-bar, so

that when a'heddle is released by breakage of its warp-thread it will dro and by cooperation with a vibrator or fee er cause the operation of a stop-motion mechanism whereby the loom is brought to rest.

In United States Patent to -Roper, No;

770,116, dated September 13, 1904, a .loom harness-motion is shown wherein detector heddles of the character referred to are used,

. r; the heddle or harness frames comprising side bars connected by a transverse cross-bar, the

latter forming the heddle-support, and substantially vertical guidesare provided in which the side bars slide, the reciprocating 1 movement of the frames being efiected by or through overhead actuating connections,

' which also serve to suspend the frames.

Sometimes the overhead connection becomes broken or ruptured in such a manner that the frame will be twisted or will run improperly,

v.so that the crossbar is inclined instead of port itself or ofthe overhead connection for the heddle-frame will act through the usual stop-motion-controllin feeler to stop the loom, and such means have also devised to separate or prevent undue lateral movement of the heddles in the reciprocation of the frame. I

It is well known by those skilled in the art that the pi and constant vertical recipr T cations of the heddle-frames and the movement of the warp-threads in forming. the shed cause a very marked lateral swaying of the heddles, which is highly obj ectionable, as the lower ends of said he ddles are moved out of the path of the feelerfvns a result a released heddle will not cooperate with the feeler, and

Various; devices have been provide to separate theiheddles into relatively small groups and to the stop-motion fails to o erate.

prevent their lateral swaying; but so far as I am aware none of these separating devices has been constructed and arranged, as will be hereinafter described, nor has any previous heddle-separating device been adapted to ef- I fect loom stoppage: upon breakage of a 1 art of the overhead harness mechanism or o the heddle-frame itself. The various novel features of tion will be fully described in the subjoined s ecification and particularly pointed out in t e following claims.

Figure 1 is a front elevation, centrally broken out, of a portion of a loom harnessmotion embodying one form of my invention, the invention being ap lied to a-harness-motiou substantially suc as is shown in Patent No. 770,116, before referred to. Fig. 2 is a transverse sectional view through the heddle-frames and showing the stop-motion mechanism. Fig. 3 1s a front elevation of a heddle-frame with my invention applied thereto, but showing the frame ascanted or I tilted, due to breakage or failure of one of its overhead connections, to illustrate the manner in which my invention causes the stop page of the loom. Fig. 4 is an enlarged-detail of one of the separators. Fig. 5 isa side elevation thereof, the heddle-support or cross-bar being shown in section; and Fig. 6 is a similar view showing a longitudinallyadjustable separator to be referred to.

The heddle-frames comprise each a crossmy invenbar or support land two end or side bars 2 2, the detector-heddles 3 of the type hereinbefore referred to being supported on the cross-bar, the bars 2 sliding in fixed vertical guideways 5, and the upper ends of said bars are connected by links 6 and 7 to bent or locking levers 8 and 9, pivotally'mounted upon the upper portion of the loom-frame,- The levers 8 and 9 are connected by a link 10, so that oscillation of the lever 9 raises and lowers the connected heddle-frame, all as in Patent No. 770,116, above referred to, the actuating mechanism shown at the left, Fig. 1, being substantially as shown and described in that patent, but forming no part of my present invention. The lower ends of the heddles 3 are so arranged that if a warpthread breaks its heddle will descend, and on the downstroke of that particular frame such released heddle will engage a normally vibrating feeler and through mechanism shown in Fig. 2 will effect loom stoppage. In said Fig.

2 the feelers ff attached to the rock-shafts f x f are geared together to rocki'n opposite directions and any suitable mechanism may be employed 'to normally vibrate the feelerssuch, for instance, substantially as in patent to Draper, No. 754,290, dated March 8, 1904.

The shi per S is released from the usual notch in t e holding-plate N by or through rocking of the knock-off lever m when the vibration of a feeler is arrested by engagement with a released detector.

Referring to Fig. 2, I have shown five heddle-frames but my invention is not restricted to the particular number of frames.

Referring now to Fig. 3, if the overhead connection for a heddle frame breaks or becomes disrupted, as shown at the left, Fig. 3, where it is supposed that the connecting-bolt has loosened between the side bar 2 and the link 7, it will be manifest that the released end of the hcddleframe will drop down and the cross-bar 1 will be canted or tilted, tending either to jam the frame in its guides, and hence to cause breakage, or causing an improper positioning of the heddles. If at the ower end of the inclined cross-bar, in such a case the heddles are not long enough to reach the feeler, and therefore cannot stop the loom. In accordance with my presentinvention I attach to the cross-bar of a heddleframe depending fingers 12, which in practice are made of thin but relatively stiff sheet metal fixedlylfastened at their upper ends into heads 13, the latter being slotted at 14 (see Fig. 5) to embrace the cross-bar, a clamp-screw 15 when set up clamping the head firmly onto the bar. The fingers 12 are of such a length that in case the overhead connection breaks the lower end of the finger will move into the path of a feeler and will then act precisely as would a released heddle, causing loom stoppage. By reference to Figs. 1 and 2 it will be seen that the fingers are of such length that they project beyond the lower ends of the heddles, and on the front heddle-frame I prefer to use a number of such fingers, according to the number of heddles and the groups into which it is desirable to divide them. These fingers extend down between adjacent heddles and, as will be seen from an inspection of Fig. 1, divide the latter into several groups. This separation or grouping of the heddles prevents the lateral swaying of the whole series of heddles, and so restricts lateral movement that the objectionable results due to such swaying are practically entirely obviated.

I prefer to employ at least two of the fingers on each heddle-frame at the ends of the series of heddles thereon and on the front heddle-frame to use as many additional fingers as may be necessary to separate the heddles into the desired number of groups.

It will be understood that by preventing the swaying of the heddles on the front frame it is unnecessary to provide the other frames with a similar number of separating devices, for the set on the front frame will act for the heddles on all of the frames.

The cross-bars will sometimes break adjacent one or the other of the side bars, and when such breakage takes place and the end of the cross-bar drops the nearest finger will cooperate with the feeler and will efiect the stop age of the loom.

' ile the fingers have suflicient rigidity to prevent lateral swaying of the heddles, they do not add unduly to the weight of the heddle-frame, and by means of the clamping connection they can be readily attached or detached and can be adjusted as desired.

In Fig. 6 I have shown an adjustable fin er, the head 13 being slotted at its lower en to receive the upper end of the finger 12*, the latter having a longitudinal slot 20, through which extends a pm 21 and a set-screw 22. By loosening the set-screw the finger can be adjusted up or down according to re uirements, the pin 21 maintaining the ger straight with relation to the head.

My invention is not restricted to the precise construction and arrangement herein shown, nor is it restricted to the particular form of harness-motion in connection with which I haveillustrated it, for it will be manifest that with other forms of heddleframe the fingers dependin from the crossbar of the heddle-frame wil serve as separators for the heddles and also will effect the operation of the stop-motion mechanism entirelyirrespective of the articular form of actuating mechanism for t e frame.

Having fully described my invention, what I claim as new, and desire to secure by Let ters Patent, is

1. In a loom, reciprocating heddle-frames each havim a transverse heddle-support, detector-heddles carried by and having limited heddle-suplport.

longitudinal movementrelativeto the suport, one or more fingers depending from the latter below the heddles, and a stop-motioncontrolling feeler adapted to cooperate with a-released heddle, or with one of the fingers upon breakage or improper descent of its 2. In a 00m, reciprocating heddle-frames each provided with detector-heddles having limited vertical movement relative to the frame, and a stop-motion-controlling feeler to cooperate with a released heddle, combined with means to separate and prevent undue lateral movement of the heddles and also adapted to cooperate with the feeler upon improper descent of the frame.

3. In a loom, reciprocating heddle-frames each having a cross-bar, and detector-heddles thereon having limited longitudinal movement relative thereto, overhead suspending and actuating connections for the frames, a

stop-motion-controlling feeler to cooperate with a released heddle, and one or more .fingers depending from the cross-bars below the heddles to limit lateral movement thereof and also to cooperate with the feeler upon breakage of a cross-bar or of its overhead connection.

- nection.

4. A harness-motion for looms having, in combination, a heddle-frame provided with detector -heddles," an overhead actuating connection for the frame, a stop-motioncontrolling feeler to engage a released heddle, and means to separate and limit lateral movement ofthe heddles and to cooperate with the feeler upon rupture of the overhead con- 5 A harness-motion for looms having, in combination, a heddle frame comprising side bars and'a connecting cross-bar, substantially/vertical guides for the frame, heddles carried by and having limited vertical movement relative to the cross-bar, suspending and actuating connections attached to the side bars, a stop-motion-controlling member to cooperate with a released heddle, and heddle-separating means sustained by the cross-bar and adapted to cooperate with the controlling member upon rupture of thecrossbar or the actuating connections.

6. A harness-motion for looms having, in combination, a series of overhead-supported, reciprocating heddleframes each provided .with a series of detector-heddles, a stop-motion-controlling member adapted to cooperate with a released heddle, and means to prevent undue lateral movement of the heddles and also adapted to cooperate with said controlling member upon improper descent of a heddle-frame.

7. Aharness-motion for looms having, in combination, an overhead-supported, reciprocating heddle-frame having a cross-bar and a series of detector-heddles thereon, a stop-motion-controlling feeler to cooperate with a released heddle, and a plurality of depending, blade-like separators on the cross- 9. A heddle-frame for looms having a cross I bar adapted to support a series etectorheddles capable of limited longitudinal movement with relation thereto, and depending blade-like fingers ri idly attached to the crossbar to divide the eddles into groups and restrict lateral swaying thereof.

10. A heddle-frame for looms having a cross-bar adapted to support a series of detector-heddles capable of limited longitudinal movement with relation thereto, and a plurality of depending separators carried by said cross-bar, each separator comprising a thin, flat and substantially rigid depending finger, and a head adapted to be clamped upon the cross-bar.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

VICTOR RAINVILLE.

Witnesses STEPHEN L. 'HALLINAN,

GEORGE W. CLYDE.

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