USRE15087E - Loom-shuttle - Google Patents

Description

'N'. SPENARO.

L00" SHUTTLE.

APPLICATNII min ocr. n. ma.

Reissued Apr. 12, 1921 ll ap'oleon Spenardv I PATENT OFFICE.

NAPOLEON SPENAERD, OF BIDDEFORD, MAINE. ASSIGNOR OF ONE-HALF TO ERNEST L, MOB/BILL, OF BIDD EFORD, MAINE.

LOOM-SHUTTLE.

Specification of Reissued Letters Patent. Reissued Apr. 12, 1921.

Original No. 1,242,383, dated October 9, 1917, Serial Ho. 150,752, filed February 24, 1917. Application for reissue flied October 11,

To all whom it may concern:

Be it known that I, NAPOLEON SPENARD, a citizen of the United States, residin Biddeford. in the county of York and btate of Maine, have invented certain new'and useful Improvements in Loom-Shuttles, of

ject to provide an improved guide for the weft thread to hold the same in proper position and prevent the thread from being accidentally displaced from the threading device arranged in the weft chamber of the shuttle.

It is another object of my invention to provide a guide-eye for the thread which is of such construction as to effectually obviate the breaking of the thread, thus avoid' ing the necessity of frequently stopping the operation of the loom.

, A further object of the invention is to provide a guide-eye so constructed that in case the thread or filling loops around the shank of the eye that saidloo. shall very quickly run off the shank before thetension on the thread has eaused'the thread to break.

' ith the above and other objects in view,

my invention consists in the novel features of construction, combination and arrangement of parts to be hereinafter more fully described. claimed and illustrated in the accompanying drawing, in which Figure l is a longitudinal section of a well known type of loonrshuttle showing my improved guide-eye arranged in operative relation with. the threading device in theweft chamber;

Fig. 2 is a section taken on the line 2-2 of Fig; 1; and

Fig. 3 is an enlarged perspective view of the eye.

Referring indetail to the drawing. A in dicatcs the shuttle and B the bobbin which is located in the we ft chamber (7.. \Vith this chamber. the threading channel D in the nose of the shuttle. comn'mnicatcs. \Vithin this channel. a metal threading device of a well known construction. as indi catcd at E. arranged and secured by means of the transvcrse bolt F. The device 1918. Serial No. 257,797.

so of the threading channel from a metal plate 5, which is stamped out or cut to provide the substantiall circular opening '6 therein with which t e lower, relatively narrow endof an entrance throat 7 communicates at one side of said'opening. One edge of this entrance throat is obliquely inclined, as shown at 8, and from the lower end of this inclined edge, an integral part of the meta'l plate proJects and is bent or inclined laterally from the plane of the plate, as shown at 9. The end of this arm or shank is formed with a'coil 10 therein, the center of which coincides with the center of the opening 6 in the plate 5. The opposite edges of the plate 5 are notched or recessed, as shown at 11, to receive retaining lugs or projections on the side walls of the threading device E, whereby the eye plate is held in-position against vertical or lateral shifting movement.

-The thread or filling is drawn from the bobbin through the channel D and the threading device arranged therein in the usual manner, the thread being inserted downwardly between the retaining wings or flanges of the threading device and directed by the inclined edge8 of the eye plateinto the opening 6 thereof. The thread is again brought upwardly against the edge of this opening and into contact with the laterally bent or inclined extension 9 which directs the thread into the eye .10. The thread is thus supported by this eye and .is freely movable therethrough as' it is withdrawn nose of the shuttle. It is unnecessary to l use. The eye may be readily arranged in position with relation to the, threadingdevice and may be used in connection with various constructions of such threading de- ,vices without necessitating any material alterations therein.

There are two features in the construction of the eye to which attention is particularly called. It will be seen that the metal from which the eye is formed extends downward transversely to the loi'igitudinal axis of the shuttle, as at 8, so as to form a downwardly extendlng guiding edge for the thread and that the shank 9 forms a continuation of this portion 8 and merges thereinto, and that then the shank is formed to provide a helical coil which extends inward 1n the "'direction of the path of travel of the thread toward the exit end ofthe thread channel and that that portion of the coil adjacent its extremity tapers more or less uniformly to the extremity oil the coil which extremity is disposed in advance of the main body of the coil. Now if the thread becomes looped around this sliankand the shank was of uni form '(liametegthe loop would tend to remain around the shank and the friction induced by this loop of thread around the shankwould tend to act to break the thread and, as a mat,

ter effect, the thread would break very quickly as the filling or thread is extremely light and has but little strength. By making the shank tapering toward the extremity of the coil, however,-the natural tendency of the loop is to work oil" of this tapering portion of the shank or work toward the point and oifof the point, and inasmuch as the pointed extremity of the shank is disposed in advance of the body of the coil, itfollows that the natural movement of the thread will tend to pull the loop of thread'toward the point of the coil and'ofl of this point so that there are two forces acting to pull the loop off the coil, namely the tendency of the loo to slipoil the tapered olished, shank an the fact that the natura. pull of the thread tends to pull the loop toward the pointed end of the shank. It will, of course, he understood that the eye can be made in various sizes asmay be required inaccordance with the particular type of construction of the.

shuttle. Therefore, while I have shown and,

therewith at one side of the entrance throat thereof.

shuttles consisting of a flat metal plate having an opening therein and an entrance throat coinnihnicating' with said opening, said plate having an extension formed integrally said extension being of circular form iii cross section and bent to provide a, single thread, receiving coil therein terminating on an imaginary line extending through the opening in spaced relation to the edge 2. A throat guide for loom shuttles consisting of a flat metal plate having an open.-

integrally formed with the plate atone side of said entrance throatand sharply ofl'set in a lateral direction from one side of the,

plate, said extension being formed into a single thread receiving coil disposed in substantially parallel relation to the plane of the plate.

3. A throat guide for loom'shuttles consisting of a flat metal plate having an pening therein and an entrance. throat com: municating with said opening, said plate being further provided with a laterally olfset, thread receiving eye disposed in spaced relation to said opening and in substantially parallel relation to the plane of the plate.

'4. As an improved article of manufacture, a throat guide for loom shuttles consisting of a flat metal plate having an opening therein and an entrance throat communicating with said opening, one edge of the entrance throat being obliquely inclined, and an extension integrally formed with the plate and projectin laterally from the inner'end of said inclined edge of the throat, said extension being formed into a single thread receiving eye disposed in spaced relation to said 0 ening.

5. In a' shuttl channel, a thread guide at oneend of the tending transversely from one side wall of 'the channel downward and toward the ward the exit end of the channel, the axis e having a thread receiving channel comprising a metallic member exof the coil being'approximately central to In testimony whereof I hereunto aflix my .the lOIlgitgdifilfll a xlis of the chanrgill, thedexsignature in the presence of two witnesses' tremit '0 t e coi terminating o rt a Y [point l n lon 'tudinaLaIinement with the be- V NAPOLEON SPENARD' 5 inning of t e coil, the terminal portion of Witnesses:

e011 gradually deemasingin diameter MILTON O. DEAN, to its extremity. 'CLARENOE Goma.

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