US2042119A - Loom shuttle check - Google Patents

Description

y 26,v 1936. J N ORTHROP 2,042,139

LOOM SHUTTLE @HECK I NVEN TOR. g/O/VAJ /VOETHEO/ ATTORNEY.

D... O R H T R O N J LOOM SHUTTLE CHECK Filed Febfl, 1965 2 Sheets-Sheet 2 INVENTOR.

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Patented May 26, 1936 ECE LOOM SHUTTLE CHECK Jonas Northrop, Hopedale, Mass., assignor to Draper Corporation, Hopedale, Mass., a corporation of Maine Application February 15, 1935, Serial No. 6,729

2 Claims;

The present invention pertains to loom shuttle boxes and more particularly relates to the shuttle checking means thereof.

It has been proposed heretofore to provide loom shuttle boxes having a binder with supplemental checking means comprised of a weight element which is slidably mounted for engagement directly by the incoming shuttle. Such construction is objectionable in that the binder must be shortened, and therefore rendered less satisfactory, in order to provide room for the sliding weight, and further in that a weight element acting directly upon the shuttle must be unduly bulky and heavy.

I propose to provide a shuttle box having a binder and supplemental checking means comprised of a weight element which is actuated by a lever pivoted in the shuttle box and directly engaged by the incoming shuttle. In the preferreclv form of the invention, the lever mentioned is pivoted at the outer end of the shuttle box on the same axis as the binder and is connected to actuate a weight element in the form of a lever having a long but comparatively light weight arm.

The said preferred embodiment is illustrated on the accompanying drawings, of which:

Fig. 1 is a plan view of the left hand shuttle box and check;

Fig. 2 is a view similar to Fig. 1 but showing the shuttle fully entered into the box;

Fig. 3 is a rear elevation;

Fig. 4 is a horizontal sectional view taken approximately on line 4 4 of Fig. 3;

Fig. 5 is a view similar to Fig. 1 but showing the shuttle partially entered into the box; and

Fig. 6 is an end elevation of the shuttle box and check.

The loom lay I shown on the drawings is of conventional design, it being mounted on lay swords as 2 for reciprocation toward and from the front of the loom in the usual manner. The lay may be pro-vided at each end with a shuttle box, the shuttle 3 being picked back and forth along the lay, from one shuttle box to the other, by means of picker sticks, as 4. Only one of the shuttle boxes is shown, that one being at the left hand end of the lay, which is at the left side of the loom.

The shuttle box includes a front box plate 5, a back box plate 6 and a floor l, the shuttle box opening inwardly, which is toward the right, Fig. 1, and being, in effect closed at its outer or left hand end by the picker stick. The inner end of the back box plate is bolted to the sword at 8 and the outer end is bolted to the lay as by a vertical bolt 9 which is vsecured tothe lay.

The shuttle box is provided with a binder I0 Which, in the present instance is pivoted at its outer end on the bolt 9. The binder is yieldingly actuated by a. spring Il and is provided on its front face with friction material I2 whereby it is adapted to frictionally resist movement of the shuttle. The binder of the present invention differs functionally from the binders more commonly used heretofore, the present binder being actuated by a 'very light spring so as to only partially check the shuttle as the latter enters the shuttle box, the spring action and the resulting friction on the incoming shuttle being, however, constant irrespective of the velocity of the shuttle, as is usual.

The present invention provides meanswhich by reason of its inertia is adapted to further check the shuttle independently of the binder after the shuttle has been partially checkedby the binder. Such means is comprised of a lever which has one arm projecting into the shuttle box to be directlyengaged and actuated by the shuttle, and a weight velement connected with the other arm of the lever to oppose movement of the latter by the incoming shuttle.

The lever mentioned may assume various forms, the lever I3 shown on the drawings being of bell crank form and pivoted intermediate its ends on the same axis as the binder, i. e. on the bolt 9 at the outer end of the shuttle box. One arm I4 of the lever projects longitudinally of the shuttle box and extends into the same. This arm is provided on its inner end with an upturned end i5 which may be faced with friction material and which is in position to be di- 'rectly engaged and moved laterally by the incoming shuttle. The binder face may be recessed as at I6 to accommodate the up-turned end of the lever in position for the latter to be engaged by the side of the rounded point of the shuttle.

The other arm Il of the lever projects rearwardly, laterally of the rst arm, and is connected with the weight element I8 in such manner that the latter urges the arm Il inwardly of the loom, thus tending to hold the lever arm I4 forwardly in the shuttle box. Adjustable stop means, as set screw I9, engages the arm I'I to limit the extent to which the shuttle engaging arm I4 projects into the shuttle box. It will be apparent that adjustment of the screw I9 will serve to vary the time of engagement of the shuttle with the lever I3 and will also Vary the extent of the vantageous.

movement of the lever by the shuttle, thereby varying the checking action of the lever and weight element.

The weighi-l element I8 may be variously contrived, but I have devised, and the drawings show, a form of such element which isv particularly ad- The element Aas shown in comprised of abell crank lever which is pivoted on a horizontal bolt 20 in the'bracket 2| on the lay, the bolt being adjacent the outer end of the lay whereby the arm 22 which engages the arm I1 may be relatively short. The second arm 23 of the element I8 is relatively long, the same projecting downwardly and inwardly along the back of the lay and having a part'24 which extends longitudinally of the lay therebeneath as is more clearly shown by Figs. Sand 6. The arm 23 is therweighted arm of'the element,` although the relative lengths of the arms of this lever and of the lever I3 are such that excessive weight is not required even at very high loom speeds.

The horizontal part 24 of the .arm 23 may be 'apertured to receive a guide post 25 which projects downwardly from bracket 2I on Vthe lay.

A stop screw 26 is carried by the part 2liv withthe head of the screw projecting upwardly. The

vscrew, may-be adjusted to strike the bracket l2I Y at the end of the upward movement of the arm 23, thereby providing means rfor positively checking the kshuttle under certain abnormal condif The operation of the. device willl be lobvious* from the foregoing description. When theshuttle is absentfrom the box, itbeing at the Aother side of the loom or in\flight, rthe parts assume the positions shown more clearly by Figs.'

l and 3. Then, as., the shuttle enters the shuttle box it will first move, and be partially checked by,

the binder as represented by Fig. 5 and willV thereafterbe fully checked in the position shown weight of the weighted element oppose movement of the lever I3 by the incoming shuttle. The construction is such that, as is apparent, it checks the incoming shuttle quite effectively but oiers much less resistance to the picking of the shuttle out of the box.

Having fully disclosed the preferred embodiment of the invention, I claim:

1. In a loom, a lay, a shuttle, a shuttle box carried by saidlay; a binder pivoted at its outer end and yieldingly actuated to partially check said shuttle as the latter enters said shuttle box,

a bell crank lever pivoted on the same axis as said binder and having one arm projecting longitudinally of said shuttle box in position to be engaged and moved laterally of said lay by the incoming shuttle after the latter has been partially checked by said binder, adjustable stop means engaging said lever for limiting the extent to which said arm projects into said shuttle box, and a weight element connected with the other arm of said lever to oppose said movement of the lever by said incoming shuttle.

2. In a loom, a lay, a shuttle, a shuttle box carried by said lay, a yieldingly actuated binder having-constant frictional engagement with an incoming shuttle for partially checking the latter asV it; enters said shuttle box, and additional checking means acting independently of said binderv and comprising a lever pivoted on a vertical axis adjacent the outerend of said shuttle box `and-having one arm projecting longitudinally ofsaid lay; into said shuttle box in position to be directly engaged and moved by the incoming shuttle afterrthe latter has been partially checked byg'saidbinder, said lever having another arm which extends vlaterally of the Ai'lrst said arm, and aweight element comprised of a bell crank lever having one arm engaging said laterally extending arm, said bell Vcrank lever having a weighted arm lever by the incoming shuttle.

JONAS NoRTHRoP.

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