US2365044A - Filling stop motion for looms - Google Patents

Description

. Dec. 12,1944. P O I 2,365,044

FILLING STOP MOTION FOR LOOMS Filed A fii 21, 1944 2 Sheets-Sheet 1 I F 1270612202: W V M Dec. 12, 1944.

FILLING STOP MOTION FOR LOOMS Filed April 21, 1944 2 Sheets-Sheet 2 v J'TZJET'I?Q 25: W

.1. P. BLOUIN 2,365,044

feeler; and

Patented Dec. 12, 1944 UNITED STATES PATENT OFFICE- 2,365,044 FILLING STOP MOTION FOR LOOMS Joseph P. Blouin, Methuen, Mass. 7 Application April 21, 1944, Serial No. 532,044

3 Claims.

Fig. 1 is a side view of the mechanism applied to the conventional loom;

Fig. 2 is an end View; Fig. 3 is a plan .view; J v Fig. 4 is a view of the detail of the filling Fig. 5 is a diagram illustrating a detail of the mechanism. V

The lay A, the shuttle box B and the filling feeler C operated by the usual mechanism, not shown, are of the conventional type in which, when the shuttle lays a filling thread T in the shed, Fig. 4, the feeler, as the lay beats up, comes down on top of this thread and its downward movement into the slot in the raceway on the lay is arrested and the further turning of the shaft C2, to which the feeler is fastened, is prevented. The shaft C2 is connected by a link to the dagger C4 pivoted at G5 on the lay, so that when the filling thread is present the dagger is raised above the end of lever D pivoted at Dl on the frame of the loom, Fig. 4. When the filling fails, Fig. 1, the feeler C is not arrested in its downward movement and the shaft C2 completes its turning movement and the dagger C4 is depressed so as to initiate the action of the parts which stop the loom.

The loom parts, the feeler devices and the dagger are old in the conventional loom and are not part of my invention.

The conventional loom is also equipped with a warp stop mechanism, not shown, which, when a warp fails, actuates a lever WI, Fig. 1, pivoted on the frame, to pull to the right a link W2 having a slot W3 in its forward end into which projects a stud E6 on the brake handle or vertical lever E pivoted at El on the frame, whereby the lever E is actuated to cause loom stoppage. Also in the conventional loom, when the filling is absent, the dagger in its depressed position hits and rocks a lever which pulls the link W2 to the right to stop the loom by acting upon the stud E6. In this mechanism a severe strain is imposed upon the dagger because the leverage between the stud E6 and the pivot El of the lever E is so small that it not infrequently happens that the dagger, which must be light, is broken and loss in weaving results.

I overcome this objection by my invention.

I provide a lever D pivoted at -Dl on the frame,

'whichlever is hit by the dagger C4 when it is in its depressed position on the beat up of the lay. Pivoted at D3 on lever D is a link D4, provided with a turnbuckle D5 to adjust its length,

which link extends downward and forward and has in its lower end a curved slot D6. To the end of the depending arm of the brake handle E is fixed a stud E2 on which is mounted a roller E3. The stud is loose in the slot D6 but normally while the loom is running bears against the upper end of the slot, Fig. 1. The roller E3 normally lies and fits in a concave notch Fl in the bottom of the end of lever F, pivoted at F2 on the frame, Fig. 5. The lever F is pulled downward by a tension spring F5, Fig. 1, fastened to the frame at F6, which stresses the lever F7 to turn counterclockwise about its pivot F8 on the frame, thereby pulling down on the link F9 pivoted to the lever F1 and to the lever F. Also pivotally connected to the lever F is a rod Flll which is connected to the usual mechanism, not shown, by which the brake is applied 1 to stop the loom.

The operation is as follows: When the filling fails, Fig. 1, the dagger C4 moves to its depressed position shown in Fig. 1. As the lay beats up, the dagger hits the end of lever D and rocks it counterclockwise about its pivot Dl and thereby pushes the link D4 downward. This pushes the roller E3 forward, or to the left, Figs. 1 and 5, out of the notch Fl and into engagement with the curved bottom end F3 of lever F. In this movement the roller moves the brake handle E clockwise about its pivot El. As the lever arm between the centers El and. E2 is of substantial length, i. e., at least three times as long as the distance between the stud E6 and the pivot El, the dagger C4 acts, through the mechanism described, with effective increased leverage on the handle E. The stress of the spring F5, acting to pull lever F downwards, then pushes the roller E3 further to the left along the curved bottom end F3 of lever F to the position shown in dotted lines in Fig. 1, the stud E2 sliding in the slot D6. Thereby the brake handle E is rocked clockwise about its pivot El to the dotted line position, Fig. l. 'The movement of E carries with it the shipper handle G which disconnects the power drive of the loom. At the same time the downward movement of lever F pulls down rod FIO to apply the brake to stop the loom.

It will be seen that the force applied by the dagger C4 to the lever D is needed only to force the roller E3 out of the notch Fl and to start the movement of the brake handle E and that it acts at the end of the full length of the arm E6Ei of lever E. Thereupon the spring F5 pulls down lever F to force the roller E3 along the curved bottom end F3- or lever- F' fully to the left, thereby turning thebrake handle E and the shipper lever G clockwise, and also to pull down the rod FIO to apply the brake and stop the loom.

By this means the heavy workof operating the shipper lever and the brake lever are initiated by the dagger with the most efiecti've 'levera'ge so that the dagger, although of the necessary lightness, is strong enough for performing its action without danger of breaking. Whereas inthe conventional loom it frequently happens, owing to the heavy stress imposedupon the :daggen'lthatit breaks and thereby causes serious loss and. delay in weaving. My mechanism eliminates this'defeet in conventional looms and increases theiease with whichthe fillin stop motion is operated and its efficiency.

1. In a loom having a lay, a'filling"fe'elerand a dagger-so actuated by the filling 'feler that on "the'beat-up of the lay it is in lifted position when "the "filling is present and in depressed position "when the filling is absent, the combination or a lever'pivot'ed on the frameand positioned to be hit'and'rocked'b'y the dagger whenthe dagger is indepiessed'positionfa link p'ivotallyconneoted other "end, a vertical la er, by the movement of "which'the loom isstopped, pivotedonthe frame and having an arm extending downwardsya' stud on the end of'said arm projecting lq'oselyinto said slot; a roller loose'on"said s'tudja'leverpivoted afcurve'd bottomat saiden'd" on'=which saidroller "rollswhe'n forced out of-s'aidnotch,-springprssed devices connected tosaid notched-leverto press its said end down against said-"rol'lerp whereby when the filling is absent said link is actuated to force said roller out of said notch to initiate the movement of said vertical lever to stop the loom.

2. In a loom having a lay, a filling feeler, a dagger, so actuated by the filling feeler that on the beatup of the lay it is in lifted position when the filling is present and in depressed position when the filling is absent, and warp stop mechanism including a lever and a link connected thereto, *Which link, on the "failure of: a Warp, pushes "againsta stud'on a vertical lever to move the same to cause loom stoppage, said vertical lever being pivoted on the frame and having an arm 'extending downwards, said arm being at least three times as long as the distance between said "stud and thepivot of said lever, the combination -of-a lever-pivotedon the frame and positioned to be hit and rocked by the dagger when in depressed position, a link pivotally connected at one endtosaid lever and having a slot at-its other end,'a stud ontheen'd of the arm of said vertical flever projecting 'loo'sely into said slot, a roller loose on said stud, a'horizontal' lever pivoted on the frame an'dhaving a curved notch near its outer end in which said roller normally rests and a curved bottom at said end on which said roller rolls whenforced out of said notch, spring pressed deVicesto press said end of saidnotched'lever down against said roller, whereby when'the' filling 'is absent the'link connected'to'the lever hit by the dagger is actuate'd'to'force said roller out of said notch to initiate the movement ofsaid vertical lever to stop the loom with aleverage which is at least three times greater than if saiddagger .actedupon the stud onsaid verticallever as in the conventional loom.

3. In a loom having abrake handle lever'pivoted on' the frame and having a depending arm and a fillingfeeler mechanisminoluding a dagger, the

combination'of' a lever so positioned as-to behit by the dagger when the filling'fa'ils, a link pivotallyconnec'td at one end to said lever and having a slot in its other-endand a stud on the end of time .-depending arm of the brakehan'dle lever projecting into said slot and slidabletherein.

, JOSEPH -P. BLOUIN.

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