US1475919A - Filling guiding and tension mechanism for loom shuttles - Google Patents

Description

Nov. 27, 1923. 1,475,919

T. E. NORMAN FILLING'GUIDING AND TENSION MECHANISM FOR LOOM SHUTTLES Filed Aug. 11. 1922 mmmmmlmmmlmulmlllf \nve nTor. Thomas ENorman Patented Nov. 27,1923;

adapted to 40 THOMAS E. NORMAN, 0] FALL RIVER, MASSAGH'U'SETTS.

ultimo G IDING am) 'rnn'srou Mncnanism FOB-L001!!! SHUTTLES.

Application filed August 11, 1922. Serial No. 581,269..

To all whom it may concern:

"Be it known that I, THOMAS E. NORMAN, a citizen of'the United States, and resident of Fall River, county of Bristol, State of Massachusetts, have invented an Improvement in Filling Guiding and Tension Mechanism for Loom Shuttles, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts, i This invention relatesto improvements in tension mechanism for loom shuttles and the principal object of the invention is to provide a simplified tension device which will exert a proper tension upon the filling as it is drawn from the filling carrier through the delivery eye of the shuttle and will dispense with the use of felt, flannel and springactuated devices or the like which have heretofore been generally employed.

More particularly the invention consists in providing a tension member, preferably in the form ofa bar, crossing the thread passage which communicates with the filling carrier chamber and the delivery eye of usual forms of hand threading or automatically threading loom shuttles combined with automatically threading guiding means located' fore and aft of said transverse tension member for .roducing a substantially vertical bight and abrupt lateral bend in the filling which will exert a desired tension upon particularly designed for use in connection with hard, twisted or kinky filling, but is be'employed where filling yarn of an usual character is employed.

A gixrther object ofthe invention is to provide adjustable means by which the vcrtical bight in the running filling may be varied to impose greater or less tension upon the filling.

A further object of the invention is to provide a threader for loom shuttles having means for producing a vertical bight in the runnin filling and also provided with a substantia ly vertical post of hard material around which the filling is bent abruptly in its passage to the delivery eye of the shuttle.

These and other objects and features of the invention will more fully appear from the following description and the accompartly panying drawings and willbe particularly pointed out in the claims. preferred embodiment of the invention is lllustrated 1n the accompanying drawing,

in which, $0

l'is a plan view of a shuttle having a threader embodying the present invention;

F g. 2 is a rear view of the threader; and,

Fig. 1s a View, partly in elevation and 1n vertical section, showlng in elevation the guide and the holddown under which the filling is guided from the filhng carrier chamber and thence over the tenslon bar and the substantially verti cal guide post around which the filling is bent 1n its passage to the delivery eye of the'shuttle.

The shuttle illustrated in the drawing-is of the usual type of automatically threading loom shuttles comprising a. body 1 having a filling carrier chamber 2 in which the bobbin or other filling carrier 3 is supported in the usual manner. The shuttle body 1 is provided with the usual longitudinally extendlng channel 4 which provides a passage for the filling to a side delivery eye 5. The noseor tip of the shuttle is provided with arecess 6 which communicates with a threading slot 7 in the shuttle body Which leads to the delivery eye 5. A metallic threading block or threader 8 is located in the channel 4 and is provided with a suitable longitudinally extending thread passage and guidingmeans for directing the filling from the filling carrier through'the eye of the shuttle, this threading block being generally in the usual form except for the modification hereinafter described. which adapts the same to the embodiment of the tension mechanism forming the present invention.

The threader 8 as shown comprises a cast metal block of brass or other suitable material having a downwardly extending finger 9 which is seated in a suitable aperture in the shuttle body. The forward portion of the threader is provided with a head 10, the forward edge 11 of which forms an extension of the wall of the threading slot which leads to'the delivery eye. The head isprovided with the usual beak 12 which underlies the shield 13 as is usual in threaders for automatic loom shuttles. The head is also provided with a downwardly extending horn 14c which projects below the axis of the delivery eye, the filling being carried are ' erably is integral with the guide 18 which.

. bar 17.

lower end rests upon or is embedded in the wood of the shuttle. This post is located at the rear of the axis of the delivery eyeand extends downwardly and slightl rearwardly so that it has a tendency to epress the filling running to the delivery eye. The upper wall of the recess 15 desirably is substantially coincidentfwith the periphery of the delivery eye and may be said to form a continuation of the wall thereof.

The tension device embodying the present invention comprises essentially a tension member or bar 17 which extends transversely of and preferably crosses the thread passage in the threader at a distance above and slightly at the rear of the vertical axial plane of the delivery eye so that the filling which is carried over the tension member or bar is bent abruptly downwardly and thence abruptly laterally about the guiding post 16 in its passage to the delivery eye. Means are also provided for bending the filling downwardly between the tension member or bar 17 and chamber of the shuttle so that a substantially vertical bight will be produced in the filling which will resist .thefrec running of the filling and with the lateral bending, as it is directed to the delivery eye, will produce a desired tension upon the filling. The preferred means for thus bending the filling downwardly between the transverse tension member and the chamber of the shuttle which is illustrated herein comprises'a downwardly curved guide or scroll 18 which may be integral with orsecured to the wall of the threader. The edge of the guide or scroll 18 is slightly separated from the opposite wall to rovide a thread passage through which the filling will automatically be drawn beneath theguide during the automatic threading of the shuttle.

The forward end of the guide or scroll '18 is provided with a downwardly bent and curved hook 19 which extends from adjacent the lower edge of the guide 18 upwardly and curves around adjacent.to the wall of the threadcr which carries the head 10. The, hold-down hook or guide 19 prefdesirably is made of brass or other pliable metal having a permanent set so that the hold-down hook 19 may be bent downwardly or upwardly to increase or decrease the bight of filling which passes under said hold-down and thence over the tension member or In the operation of the device the shuttle is threaded in the usual manner, either by hand, or automatically during the first flight across the lay of the loom after transfer.

reason of this construction,

In either case the filling as drawn from the filling carrier is automatically carried downwardlythrough the threading slot 7 beneath the horn 14 of the threader into the eye of the shuttle. fillin is carried downwardly through-the slot etween the guide 18 and the wall of the threader and rises beneath the guide 18 and consequently under the hold-down hook 19.

The hold-down hook 19 is located below the plane of the transverse bar or tension member so that the filling running from the filling carrier passes beneath the hold-down which acts as a friction device, thence abruptly upwardl over the transfer bar. thence downward y through the recess 15 in the threader to the shuttle eye. In thus passing to the shuttle eye the filling is bent abruptly around the vertical post 16. By therefore, a substantially vertical bight is formed in the filling as it passes over the transverse bar and an abrupt lateral bend is formed in the filling as it passes to the delivery eye. These bends, and particularly the vertical bight, serve to exert a considerable tension upon the running filling. a

In order, to regulate the tension upon the runnin filling the hold-down hook 19, which is of pliable material, may be bent downwardly to increase the length of the the transverse bar, or alternatively, the

hold-down hook 19 may be bent upwardly to decrease the length of said bight and thereby decrease the amount of tension imposed upon the filling.

It will, of course, be understood that the transverse bar 17 may be located at any desired distance above the horizontal axis of the shuttle, or the normal lane in which the filling passes from the fi ling carrier to the delivery eye of 'the shuttle, so that any desired'vertical bend or bight in the filling may be provided for according to the character of the filling which is to be used.

By properly positioning the transverse bar 17 and adjusting the hold-down hook 19 the desired tension for any filling may be readilywprovided. I

It will be understood that the embodiment of the invention disclosed herein is of an illustrative character and is not restrictive, and that various changes in form, construction and arrangement of parts may be made within the spirit and scope of the following claims.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is:

1. In a loom shuttle comprising a filling carrier chamber, a side delivery eye having a threading slot leading thereto and a longitudinal thread passage communicating withsaid filling carrier chamber and said slotted eye; a horizontal tension member extending transversely of said longitudinal thread passage and guiding means for the filling positioned to hold down the filling fore and aft of said tension member and acting to produce a substantially vertical bight in said filling and thereby to impose a tension upon the running filling.

2. In a loom shuttle comprising a filling carrier chamber, a side delivery eye having a threading slot leading thereto and a longi-' tudinal thread passage communicating with said filling carrier chamber and said slotted eye:- a horizontal tension member crossing said longitudinal threadpassage, an automatically threading hold-down guide located in said passage below and in proximity to said tension member on the filling chamber side thereof and automatically threading filling guiding means located below and in proximity to the delivery eye acting to direct the filling downwardly and bend the same abruptly laterally to the delivery eye whereby a substantially vertical b-ight and lateral bend will be produced in the running filling which will impose a desired tension upon the filling.

3. In a loom shuttle comprising a filling carrier chamber, a side delivery eye having a threading slot leading thereto and a longitudinal thread passage communicating with said filling carrier chamber and said slotted eye; a horizontal tension member crossing said thread passage, an automatically threading hold-down guide located in said passage below and in proximity to said tension member on the filling chamber side thereof and automatically threading guiding means located below and in proximity to the other side of said tension member acting to direct the filling downwardly and a post of hard material located adjacent to said delivery eye for bending the filling abruptly laterally to the delivery eye whereby a substantially vertical bight and lateral bend will be produced in the running filling which will impose a desired tension upon the filling.

4. In a loom shuttle comprising a filling carrier chamber, a side delivery eye having a threading slot leading thereto and a longitudinal thread passage communicating with said filling carrier chamber and said slotted eye; a horizontal bar crossing said thread passage between said eye and said filling carrier chamber, an automatically threading guide located between said bar and said filling carrier chamber having an adjustableself-threading frictionhook located adjacent to'and below said bar acting to hold down the filling and means, located upon the opposite side of said transverse bar, for guiding the filling downwardly over said bar and directing it laterally 'to the delivery eye.

5. In a loom shuttle comprising a filling carrier chamber, a side delivery eye having a. threading slot leading thereto, a longitudinal channel provided with a threader having a longitudinal thread passage communicating with said filling carrier chamber and said slotted eye, a horizontal bar crossing said thread passage between said delivery eye and said filling carrier chamber, an automatically threading guide integral with said threader located between said bar and said filling carrier chamber, a pliable self-thread ing friction hook integral with said guide located adjacent to and below said bar adapted to be bent downwardly or upwardly to produce a greater or less bight in the filling passing over said bar and means for guiding the filling downwardly and laterally over said bar to said delivery eye.

6. In a loom shuttle comprising a filling carrier chamber, a side delivery eye having a threading slot leading thereto, a longi-" tudinal channel provided with a threader having a longitudinal thread passage communicating with said filling carrier chamber and said slotted eye, a horizontal bar crossing said thread passage between said delivery eye and said filling carrier chamber, an automatically threading guide integral with said threader, located between said bar and said filling carrier chamber, a pliable self-threading friction hook integral with said guide located adjacent to and below said bar adapted to be bent'downwardly or upwardly to produce a greater or less bight in the filling passing over said bar and means for guiding the filling downwardly and laterally over said bar to said delivery e e including asubstantially vertical post 0 hard material carried by said threader located in alinement with said delivery eye and about which the filling is bent abruptly in its passage to the delivery eye.

lntestimo'ny' whereof, I have signed my name to this specification.

'IHQMAS E. NOR

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