US1517072A - Filling-detecting device for looms - Google Patents

Description

Nov. 25, 1192@ am p. KEEGN FILLING DETECTING DEVICE FOR Looms Filed Feb. 1l, 1994 l La Fi Q". l.

Patented 25, i924.

PATRICK KEEGAN, F FALL RIVER, MASSACHUSETTS, ASSEGNQR TO DRAPER COR- PORATION, 0F HOPEDALE, MASSACHUSETTS, A CRPGB/ATION OIF MAINE.

FILLING-DETECTNG DEVIE EUR LOOMS.

Application led February 11, 1924:. Serial No. 691,939.

To all lwhom t may concern."

Be it known that I, PATRICK KEEGAN, a citizen of the United States, and a resident of Fall River, county of Bristol, State of Massachusetts, have invented an lfmprovement in Filling-Detecting Devices for Looms, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to a filling detecting device for looms such as commonly employed to detect the exhaustion or breakage of the filling and thereupon effect a change in the operation of the loom. Such devices are usually provided in connection with automatic weit replenishing looms either to effect the stoppage of the loom or the replenishment of the filling whenever the filling breaks or becomes exhausted.

rl'he device comprises a so-called fork carried by a slide and adapted to cooperate with a hook on the usual vibrating weft hammer of the loom. So lo-ng as the filling 2% is properly laid in front of the fork the fork is rocked at each beat-up of the lay into a position where it cannot engage the hook. lf, however', the filling is absent from in front of' the filling fork upon the beat-up, due to breakage or exhaustion, then the filling fork engages the hook and the slide is carried forward with the weft hammer and this motion is utilized to effect the desired change in the operation of the loom such as the stoppage of the loom or the automatic replenishment of the filling.

Lint, waste and broken filling ends not infrequently accumulate during the operation of weaving to such an extent as occasionally to prevent the proper cooperation of the filling fork and hook either by preventing the filling fork from engaging the hook or by maintaining the filling fork in engagement with the hook. The object of the present invention is so to construct the filling detecting device as to prevent such an undesired accumulation of' lint, waste and filling ends and to ensure the proper cooperation of the filling fork and hook and further to enable the condition of the filling 0 fork and hook to be observable at all times by the operator. v

The nature and object of the invention will appear more fully from the accompanying description and drawings and will be particularly pointed out in the claims.

ln the drawings:

Fig. l is a side elevation of a filling detecting device embodying a preferred form of the invention;

Fig. 2 is a top plan view of the construction shown in Fig. l;

Fig. 3 is a view in vertical cross section taken on the line 3-3 F ig. 2 and showing the filling fork engaging the hook carried by the weft hammer;

Fig. 4L is a detail elevation of' a modified form of the invention.

The general construction and operation of a filling detecting mechanism of this nature is so well known and familiar to those skilled in the weaving art that it will only be necessary here to illustrate and describe those parts particularly concerned with the present invention.

The slide 1 is usually mounted on the breast beam of the loom so as to slide forwardly and rearwardly thereon and is yieldingly held projected rearwardly toward the lay. This slide terminates at the rear in a pair of transversely separated arms 2. The filling fork comprises a body i fulcrumed on a stud 5 extending between and mounted in the rear end of the arms 2. The tines 6 of the fork extend downwardly from the. body and the tail 7 which is loop-shaped extends forwardly from the body. The usual vibrating weft hammer 8 of the loom projects upwardly between the arms 2 which thus straddle the weft hammer and this weft hammer carries pivoted to its upper end at 9 a hook l0 which rests upon a bar 1l extending transversely between the arms 2.

If the filling is properly laid by the shuttle it will be carried by the lay, and usually e5 by a grid-like device supported on the lay, against the t-ines 6 of the fork thus rocking the fork on its stud 5 and raising the tail 7 so that it cannot catch upon the hook 10. If, however, the filling is broken or exhausted there is nothing to swing the forli when the lay beats up and the fork will remain in the position shown in Fig. 3 in engagement with t-he hook 10. Consequently when the wett hammer 8 swings torwardly the filling fork and with it the slide 1 will beA carried forwardly and this movement utilized to effect the desired change in operation of the loom.

Owing, as has already been pointed out, to the occasional accumulation of lint, waste or broken filling ends, thetail 7 of the filling fork. may not effect the desired cooperation with' the hook 10. Such an accumulation may prevent the tail 7 from catching on the hook or it may cause these parts so to adhere' together as to prevent their separation.. This is prevented by the present invention.

For this purpose the arms Q` at their rear portions are extended upwardly, preferably in the generally triangular shape 12. The arms 2" with the triangular extensions 12 are. connected at the rear by the wall 13. The space between the triangular extensions 12 in front at: the top is preferably enclosed by atransparent and preferably removable window. For this purpose the top front edges 14 are grooved at their inner sides and: a plate. 15 o glass, celluloid or other transparent material is slid into these grooves.V

There is, thus formed a hood enclosing at.. they top and therear the space between ther-arms of they slide in which the fork swings:v Thus accumulation of lint, waste orrilling ends in the vicinity of the filling fork and hookV is eifectually prevented. The transparentwindow:enables the operator at allgtimesto-have an unimpeded view of the fork and the hook` and thus to observe its condition.. The removable feat-ure of the window. which is effected bysliding the plate 15 upwardly out of the hood in the grooves enablesthe operator to have tree access to the filling; fork and hook.

Lmodii'ed forni of the invention is shown Figli which illustrates a hood of the character above described adapted to be appliedy toa usualtype of lling fork slide. This construction comprises vertical walls 16 andv a V rear wall 17 which desirably are forme'dfintegral and" may be cast or formed of 'sheet metal, the sidev wall 1.6 being adapted to be secured to the slide arms 2 by. screws 18 or other suitable fasteners. The hood comprises a. suitable closure or cover,I 19 which may be made of any suitable material 'and which, as illustrated in Fig. 4L,is hinged at its upper end to the rear wall 17. otlie' cover. Desirably the cover or closure 19 is made in whole or in part of a transparent material in order that the opera tor may at any time observe the condition of the filling fork.

There is thus presented a very simple and effective construction by which the character oi.' the filling detecting device is much improved and danger from accumulation of lint waste or filling ends is prevented.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is:

1. A vfilling detecting device tor a loom comprising a slide terminating at its rear end in transversely separated arms adapted to straddle the usual hook on the vibrating veit hammer, a iilling fork ulcrumed be'- tween and in said arms and having ay for wardly extending tail to cooperate with the hook and downwardly extending tines, and a hood enclosing at the top and rear the space between said arms in which the fork swings.

2. A lilling detecting device for a loom comprising a slide terminating` at its rear end in transversely separated arms adapted to straddle the usual hook on the vibrating weft hammer, a {illing fork fulcrumed between and in said arms and having a forwardly extending tail` to cooperate with the hook and downwardly extending tines, and a hood having a transparent window and enclosing at the top and the rear the space between said arms in which the forli swings.

8. A filling detecting device for a loom comprising a slide terminating at its rear end in transverselyT separated arms adapted to straddle the usual hook on the vibrating weit hammer, a filling fork fnlcrumed between4 and in said arms and having a forwardly extending tail to cooperate with the hook and downwardly extendingv tines, and a hood enclosing at the top and rear. the space between saidv arms in which the fork swings the said hood presenting in front at the top a downwardly inclined, removable, transparent window.

11. A filling detecting device for a loom comprising a slide terminating at its rear end in transversely separated arms adapted to straddle the usual hook on the vibrating weft hammer, a filling fork fulcrumed` between and in said arms and having a forwardly extending tail to cooperate with the hook and downwardly extending tines, and a hood enclosing` at the top and rear the space between said arms and having a removable closure'.

5. A hood for enclosing at the top and rear the space between the rearwardly extending arms of a filling` fork slide comprising walls extending upwardly from the respective slide arms, a connecting rear wall and a removable front wall.r

6. A hood for enclosing at the top and rear the space between the rearwardly extending arms of a filling fork slide comprising walls extending upwardly from the respective slide arms, a connecting rear wall, a removable front wall and means for securing the upwardly extending walls to said slide arms.

7. A hood for enclosing at the top and rear the space between the rearwardly ex- W tending arms of a filling fork slide compris ing vertical substantially triangular walls extending upwardly Jfrom the respective slide arms connected by an integral rear wall and a. removable front wall and means for securing said upwardly extending walls to said slide arms.

In testimony whereof, I have signed my name to this specification.

PATRICK KEEGAN.

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