US1629446A - Loom picker check - Google Patents

Description

N, w; 'BRANNON Loon PIcKER'cHBcK Filed Nov. 1o, 1926 A-la i.

lvlnv'enror. Nam W. Brannon @mL-4154.7y

Patented May 17, 1927.

NEM WILLIAM BRANNON. or enana;

SOUTH CAROLINA, ASSIGNOR 'IO DRAPER COR- PORATION, CF HEEDALE, 'MASSACHUSETT A CORPORATION QF AINI AINE.

LOOM PICKER CHECK.

Application led November 10, 1926. Serial No.t 147,399.

This invention relates to a device for checking the movement of the picker stick of a loom when the shuttle forces the picker stick outwardly as it is boxed at the end ot a pick.

The object of the invention is to provide a simple and efficient construction which will apply accelerated braking or checking action to the picker stick and consequently to the shuttle at the end ot the boxing movement, but which shall not inter-tere with the inward picking movement of the picker stick.

These and other objects and features of the invention will appear more fully from the accompanying description and drawings and will be particularly pointed out in the claims.

As the general construction and operation ot a shuttle, picker, and picker stick of' a loom are well known and familiar to those skilled in the art, it will only be necessary here to illustrate andA describe those parts to which the invention particularly relates.

In the drawings:

Fig. 1 is a front elevation of the lefthand end of a portion ot the lay of a loom and associated parts with a preferred Aform of the present invention embodied therein.

Fig. 2 is a view vin transverse cross section taken on the line 2-2 o'f lEig. 1.

Fig. 3 is a view in vertical cross section taken on the line 3-3 ot Fig. 2.

As the construction is, so tar as this invention is concerned. the same at both sides ot the loom, it is sutlicient to illustrate that at one side The lett-hand end ot the la'y 1 is shown as provided with the usual shuttle borV having the front wall 2 and rear wall. 3 between which the picker 4t moves. This picker is carried at the upper end of .a picker stick 5 which passes through the usual slot in the lay and is given an oscillating or reciprocating movement in the plane of the lay to etl'ect its function. The picker stick is moved to the right, viewing Fig. 1, to pick the shuttle out of the boX and through the shed to the opposite side of the loom and is moved to the lett, viewing Fig. 1, by the shuttle as it enters'the box at the conclusion of the opposite pick. As is well known. it is desirable that the picker stick shall not be restrained but shall be iree to apply its full torce to the shuttle at the beginning of the picking movement and as it picks the shuttle out ot the box. It is equally desirable that the shuttle at the conclusion ot its movement into the box shall be properly checked so that no rebound of the shuttle or mispositioning of the shuttle in the box shall occur. This is often done by checking the outward movement of the picker stick .as it is forced outwardly by the shuttle n.during lthe boxing movement. In the present invention these desired results are secured in a novel, [efficient and simple manner.

A picker loop is provided which is mounted on the lay and reciprocated longitudinally thereof by the .picker stick. vFor this purpose a bracket 6 is mounted upon and depends from the lay beneath the shuttle boX. The picker loop in the Yconstruction `illustrated comprises ya metal slide 7 with its ends 8 bent at right angles and united 4by a bolt 9. This slide is slotted longitudinally Vat 10 and bolts 11 pass through this slot,

securing the slide to the bracket 6 and permitting .it to slide longitudinally or' the lay.

The picker stick 5 passes up between the parts7 land 9 of the picker loop and during the latter portion of its outward movement moves the picker loop to the lett or into the position shown in Fig. 1, and during the latter portion of its inward movement moves ,the pickerloop inward. Suitable buffers 12 .ot leather' or other material are secu-red to the ends 8 ot the picker loop to take the 'blows .of the picker stick.

In this invention the vrequired checking action is secured by two cooperating elements. the lirst of which is a 'spring Aactuated lever and the second ot which is a lever engaging abutment preferably in the .Y

form of `a roller. Oneof these elements is mounted on .the lay and the other on :the picker loop,v and they are arranged to co-act so that during` the latter portion of the outward movement ot the picker loop by the picker stick an accelerated braking action takes place, while during the inward or picking movement of the picker stick, this mechanism places no restraint thereon until the latter portion ot such movement when the shuttle is in the shed and then during the latter portion of this inward movement ot the picker stick, the inward movement of the picker loop, which takes place therewith, effects a quick release of the braking action.

Lit)

In the preferred construction illustrated, the roller is mounted on the lay and the spring actuated lever is carried by the picker loop. The roller 13 is shown as having a grooved periphery and journalled on a stud 141 extending transversely from the bracket 6 so that the roller is free to rotate in a plane parallel to the line of movement of the picker loop. The lever 15 is shown as pivoted at its outer end to the outer end of the picker loop, a pivotal stud 16 being provided on the slide 7. The lever extends toward the inner end of the picker loop or longitudinally the picker loop. The feature by which the lever is spring-pressed into engagement with the roller is shown as a helical, contractile spring 17 connected at one end 1S to the free end of the lever and at the other end to a stud 19 on a bracket 2O depending from and secured to the slide 7.

rlihe operation of the device will be apparent. During the latter portion of the outward movement of the picker stick as it is forced outwardly by the shuttle, the picker loop moving with it carries t-he lever 15 bodily over the roller 13, thus rapidly stretching the spring 17 and thus producing an accelerated braking action. VJ hen the picker stick moves to the right to pick the shuttle out of the box, it is unimpeded and swings freely in the picker loop until it has substantially or completely picked the shuttle, when it strikes the inward end of the picker loop and moves it inwardly. This inward movement of the picker loop carries the lever 15 bodily to the right and effects a quick release of the braking action.

There is thus produced a simple and effective means for securing the results desired.

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

1, A loom picker cheek comprising` a picker loop mounted to be reciprocated bodily longitudinally on the lay by the picker stick and a lever and a lever engaging abutment located the one on the lay and the other on the picker loop and forced together to produce an accelerated braking action during the latter portion of the outward movement of the picker loop and a quick release during the latter portion of the inward movement of the picker loop.

2. A loom picker check comprising a picker loop mounted to be reciprocated bodily longitudinally on the lay by the pickerstick, a spring actuated pivoted lever extending longitudinally of the picker loop, and a roller rotatable in a plane parallel to the line of movement of the picker loop and having peripheral engagement with the lever, the said lever and roller being mounted the one on the lay and the other on the picker loop, and the lever being forced against the roller to produce an accelerated braking action during the latter portion of the outward movement of the picker loop and a quick release during the latter portion of the inward movement.

3. A loom picker check comprising a picker loop mounted to be reciprocated bodily longitudinally on the lay by the picker stick, a roller mounted on the lay on an aXis eX- tending transversely of the picker loop, a lever pivoted on the picker loop and extending longitudinally thereof, and a spring connecting the lever and picker loop and acting Y to hold the lever lin engagement with the roller during the movement of the picker loop so as to produce an accelerated braking action during the latter portion of the outward movement of the picker loop and a quick release during the latter portion of the inward movement.

l. A loom picker check comprising a picker loop mounted to be reciprocated bodily longitudinally of the lay by the picker stick, a roller journalled on the lay to rotate in a plane parallel to the line of movement of the picker loop, a lever pivoted at the outer end of the picker loop and extending toward the inner end and engaging the roller, and a spring connecting the lever and picker loop and acting' to force the lever yieldingly against the roller during the movement of the picker loop so as to produce an ac celeratet'i braking action during the latter portion of the outward movement of the picker loop and a quick release during the latter portion of the inward movement.

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

NEM W'ILLIAM BRANN ON.

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