US2239349A - Picker check - Google Patents

Description

P c. D. BROWN 2,239,349

PICKER CHECK Filed Oct. 17, .1940

v 7 MENTOR CARL D, Q NI A'F-ORNEY.

Patented Apr. 22, 1941.

Carl D. Brown,

Hopedale, Mass, assignor to Draper Corporation, Hopedale, Mass, a corporation of Maine ApplicationOctober 17, 1940, SerialNo. 361,610 6 Claims. (Cl. 139-161) The present invention pertains to picking mechanism for fly shuttle looms, and more particularly relates to picker checks for such looms.

Looms of the type to which my invention applies usually include a forwardly and rearwardly reciprocating lay having a shuttle box, a picker actuated to pick a shuttle out of the shuttle box, and picker check means for checking the picker and shuttle when the latter returns to the shuttle box. Usually, the picker is fixed to or engaged by a picker stickand the check means acts on such picker stick or pon the parallel shoe attached thereto. 4

One of the prior types of picker checks comprised some form of mechanism employing resilient means for engaging either the picker-stick or parallel shoe to resist the outward movement of the picker stick thereby checking the shuttle. However such types of picker checks usually have the common defect of continuing their pressure against the picker stick or shoe after the picker stick has reached its outward limit of travel thereby forcing the picker stick to move inwardly causing rebound of the shuttle. 7

Accordingly, it is a principalobject of this invention to provide in a loom having picking mechanism including a .picker stick, resilient means actingagainst the outwardmovementof said picker stick to check the picker stick, such resilient means being so constructed and arranged as to exert no pressure urging the picker stick to move inwardly after said picker stick has been checked.

The foregoing and other objects of the invention are accomplished in the construction illustrated on the accompanying drawing, of which:

Fig. 1 is a view in front elevation of a portion of a loom embodying my invention;

Fig. 2 is a view taken on line 22 of Fig. 1;

Fig. 3 is a view taken on line 3-3 of Fig. 2; and

Fig. 4 is a view taken on line 4-4 of Fig. 2.

The drawing shows only part of a loom having my invention applied thereto, parts and mechanisms not shown being of usual construction wellknown in the art. It is noted, however, that the complete loom includes a pick motion and picker stick check at each side of the loom and while both such picker stick checks may be constructed in accordance with my invention, only one of them is shown and described.

The parts shown on the drawing include a parallel or support I which is adapted to be secured to the lay rocker shaft (not shown), a parallel or rocker shoe 2 mounted on the support 1 for rocking movement thereon, and a picker stick 3 attached to the rocker shoe 2. A parallel tongue 4 ,projectsupwardly from the support I and is received. in a recess in the shoe 2, said parallel tongue acting to keep said shoe 2 in alignment withthe support I during the rocking movement of the shoe.

Means (not shown) are provided to move the picker stick inwardly of the loom or to the left as viewed on Fig. 1. A spring drum 5 mounted in bearing 6 in a depending lug "I carried at the underside of the support I operates by means of strap 8 connected to the end of the picker stick to swing the picker stick outwardly of the loom or to the right as viewed on Fig. 1.

The parts as thus far described in detail are of usual construction and are of thepresent invention .only in that they may cooperate with other parts hereinafter described, to form a complete operative combination.

The check mechanism may comprise an .L-Lshaped bracket 9 secured to depending lug bymeans of screw II] and clamp lugs II and I2. The longer leg of the bracket 9 has a slot I3 therein for the reception of a stud I4. Pivotally mounted on stud I4 adjacent one end is a lever I5. A locking sleeve I6 is mounted on stud I4 adjacent lever I5. The portion of stud I4 on which the lever I5 is mounted is of greater diameter than the remaining portion of the stud. Sleeve I6 is non-rotatably secured on stud I4 by means of arectangular shoulder I! formed on stud I4 which projects into the rectangular opening I8 in sleeve I6 whereby sleeve I6 and stud I4 are fixed in relation to each other. A coil spring I8 surrounds the sleeve I6, one end 20 of said spring engages the lever I5, the other end 2I of the spring is secured in a recess 22 on sleeve It. A washer 23 and a spring lock Washer 24 are secured on the outer end of stud I4 next to bracket 9, and a lock nut 25 is threaded on the end or" stud I4 whereby upon tightening of nut 25 the stud I4 is rigidly clamped to the bracket 9. A set screw 26 provides for longitudinal adjustment of the stud I4 in slot I3.

The lever I5 is pivotally mounted on the stud I4 and extends outwardly in overlapping relation with the inner end or toe of the parallel shoe 2. Lever I5 has a surface 21 which presses against the inner tip 28 of the toe of the parallel shoe. The angular relation of the surface 21 with the tip 28 of the shoe 2 is such that when the shoe has moved upwardly (due to the outward movement of the picker stick) to the limit of its upward movement, the tip will be perpendicular to the surface 21 whereby no downward pressure is exerted on the shoe by the lever ii.

The operation of the device is as follows:

As the shuttle enters the shuttle box and strikes the picker, the picker and picker stick move outwardly (from left to right as viewed on Fig. l) and. the parallel shoe 2 moves on the parallel I, the inner tip 28 being moved upwardly against the downward pressure of spring l9 exerted through the lever l5. When the shoe 2 has reached its uppermost position, the shuttle has been effectively checked, and the inner tip 28 of the shoe is perpendicular to the surface 21 of the lever [5, therefore lever l does not exert any further downward pressure on the shoe, thus no rebounding of the picker stick takes place and the shuttle comes to rest in proper position for transfer.

Having thus fully disclosed the preferred form of my invention, I claim:

1. In a picker check mechanism for preventing the rebound of the shuttle in fly shuttle looms, the combination of a support, a rocker shoe mounted thereon for rocking movement, a picker stick attached to said shoe, a lever pivota1ly mounted on said support, resilient means for holding said lever against upward movement, .said lever extending outwardly over the toe of :said shoe, the outer end of said lever being inclined upwardly forming a bearing surface enggaging the toe of said shoe, the inclination of a said bearing surface being such that when said toe has reached the uppermost point of its travel, :said toe will be perpendicular to said bearing surface whereby all downward component of the pressure exerted upon said toe by said lever -will disappear.

2. In a loom, the combination of a picker stick having a shoe attached thereto, a support upon which said shoe rocks, a bracket attached to said support, a lever pivotally mounted on said bracket and extending outwardly over the inner end of said shoe, resilient means pressing said lever downwardly against said shoe, the outer end of .said lever engaging said inner end of said shoe being upwardly inclined whereby when said inner end of said shoe has reached the uppermost point of its upward travel it will be perpendicular to said inclined outer end of said lever and the downward pressure of said lever on said shoe will disappear.

3. In a loom, the combination of a shoe having a picker stick attached thereto, a support upon which said shoe rocks, a lever movably mounted on said support and having an upwardly inclined bearing surface in engagement with the toe of said shoe, resilient means for pressing said lever downwardly against said toe, the movement of said lever and the inclination of said bearing surface being such that when said toe has reached its uppermost point of travel it will be perpendicular to said surface whereby the downward pressure of said lever disappears.

4. In a loom, the combination of a picker stick having a shoe attached thereto, a support upon which said shoe rocks, a bracket having a slot therein attached to said support, a bolt adjustably mounted in said slot for adjustment towards and from the toe of said shoe, means for locking said bolt in adjusted position, a lever pivotally mounted on said bolt and extending outwardly over the toe of said shoe, the outer end of said lever being inclined upwardly forming a bearing surface engaging said toe and resilient means pressing said lever downwardly into engagement with said toe.

5. In a loom, the combination of a picker stick having a shoe attached thereto, a support upon which said shoe rocks, a bracket mounted on said support, a lever movably mounted on said bracket and extending outwardly over the toe of said shoe, the outer end of said lever being inclined upwardly forming a bearing surface engaging said toe and resilient means pressing said lever downwardly into engagement with said toe, said lever being adapted to be moved upwardly by said toe to a point where said toe is perpendicular to said surface whereupon the downward pressure of said lever on said shoe ceases.

6. In a picker check mechanism, the combination of a picker stick'having a shoe attached thereto, a support upon which said shoe rocks, a lever movably mounted on said support and extending outwardly over the toe of said shoe, the outer end of said lever being inclined upwardly forming a bearing surface for engagement with said toe and means for urging said lever downwardly into engagement with said toe, said lever being adapted to be moved upwardly by said toe to a point where said toe is perpendicular to said surface whereupon the downward pressure of said lever on said shoe ceases.

CARL D. BROWN.

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