US1666620A - Shuttle-checking mechanism for looms - Google Patents

Description

. April 17, 1928.

G. E. GEOGHEGAN SHUTTLE CHECKING MECHANISM FOR LOOMS Filed May 15. 1926 0 m mm; W W E v w Patented Apr. 17,1928.

EN'TVV' OFFICE.

GEORGE E. GEO'GHEGAN, o wm ia, MASSACHUSETTS.

SHUTTLE-CHECKING MECHANISM FOR LOOMS.

Application filed May 15,

I This invention relates to. a shuttle checking mechanism forlooms and has for its object-to provide a mechanism forassisting in checking the momentum of a shuttle and bringing the latter to a finalv state of rest within the shuttle box,the mechanism being of such a character that it will provide an effective cushioning means for the shuttle andpicker, thereby eliminating much. of the wear upon the picker and picker stick, the ultimate object in view being to prolong the usefulness and life of said picker and picker stick. i I 9 Another object of the invention is to pro vide a mechanismfor positivelypositioning the picker at a predetermined position of rest, so that the shuttle will always" be in: the same starting position when the picker is hit'by the picker stick.

The invention consists in the shuttle checking mechanism for looms as set forth in the following specification and particularly. as pointed out in the claims thereof.

Referring to the drawings:

Figure 1 represents a plan VIGWOf the end portion of a lay and the shuttle box at said end, a shuttle checking mechanism embodying my invention being illustrated associated therewith.

Fig. 2 is afront elevation of the mecha-' nism illustrated in Fig.1, a portion of said mechanism being broken away and illustrated'in sectio... Fig. 3 is a detail section taken on the line 33 of Figure 1. I I Fig. 4 is a front elevation of the bumper for the "picker. p p

Like numerals referto like parts, throughout the several views of the drawings. In the drawings, 5 representsa portion of the frame ofa loom, 6 the end portion .ofa lay, 7 the shuttle box associated with :said end of said lay, 8 the top portionof a picker stick and 9' a picker, all of said parts being of well-known construction and common in the art.

A shuttle 10, well known in the art, is illustrated in dotted lines in Fig. 2 resting upon the bottom plate of the shuttle box and engaging the picker 9. The picker 9 is slidably mounted upon the usual spindle 11 and has a cushion 12 extending partly therearound and secured thereto by a bolt 13. The cushion 12 is constructed of any suitable material, such as, leather or rawhide, and extending around the edge of said 1926. Serial No. 109,389.

cushion is a'band 14hr thin resillient sheet.

1'uetal,-said band being secured to said cushion. and-picker bythe bolt 13. The picker 9 is secured to the picker stick-8 by a strap 15. The picker 9 projects through a slot 16 in theirear wall of the shuttle box 7 and in its guide rods 23, the rods 22 being rigidly fastened in the framework of the shuttle box, and the v guide rods 23 being secured to amember 24 whichis loosely mounted in the shuttle box and rests upon the bottom plate thereof. Springs 25 surround the rods 22 and yieldingly engage the plate 20 at the rear thereof, and in like manner springs 26 surround the rods 23 and also engage the plate 20 at the rear thereof.

The plate 20 has an extension 27 projecting downwardly from the lower edge there of and through a hole 28 in the bottom plate of the shuttle box, and projecting laterally from the said'extension 27 aretwo oppositely disposed wings or projections 29 which serve to hold the bumper in position and prevent the same from having atenden'cy to raise within the shuttle box. The extension- 27 has a loose fit within the opening 28 and thelatter acts as a pivot for said bumper and permits the latter to rock rearwardly and 22 and 23 against the tension'of the springs 25 and 26. j I I It is desirable that when the picker. 9 is in its normal position of rest that'it shall always be located in the same position in order that the picker stick may always exert the same force thereon, and in order to offset any action that there may be for the bumper 19 to stick or bind upon the rods 22 and 23 a mechanism is provided for positively returning said picker to a predetermined position of rest within the shuttle box. This mechanismembodies therein a push rod 30 mounted to slide in a horizontal plane in bearings 31 and 32 upon the underside of the lay and beneath the shuttle box. At its outer end iecting portion 34, and during the latter part the rod 30 has a portion 33 bent at right angles thereto and projecting in front of the extension 27 of the bumper 19. At its inner end the push rod 30. has a downwardly proof the beat-up movement of the lay, the portion 34: of said push rod 30 engages a cam 35 which is adjustably fastened to the frame 5 of the loom by a bolt 36, the latter pro- 'jecting tlrrough a slot 37 in: said cam. A

guide 88 is provided for the purpose of holding the push rod- 30 ir position, the pro the shuttle box 7, said shuttle is retarded in its movement the usualbinder which forms no portion of this inve-i-ition and which is not illustrated in the drawings. The shuttle 10- then strikes the picker 9 and forces 5 said" picker and bumper 19* toward the end of the lay, said bumper sliding upon the rods and 23 and compressing the springs 25 and- 26' which finally bring the shuttle to a stop. Said springs immediately react to force the bumper 1'9, picker 9 and shuttle 10 to the position i-ll ustrated in- Figs. 1 and 2, which is the normal state of rest of said picker and shuttle.

If there happens to be any tendency for the bumper to stick upon the rods 22* and 23 as the lay reaches its forward position in the beat-up movement, the projection 34 of the push rod will engage: the working face of the cam 35 and said cam will force said rod 30' toward" the end of the lay and the portion 33 of'said rod" will engage the extension 27' of the bumper 19 causing the latter to rock in the opening 28 and positively force said bumper, picker and shuttle to their normal positions of rest.

During the above operations excessive Wear between the picker stick 8 and picker 9* is eliminated by the presence of the cushion 12 upon said picker, said cushion. acting to minimize the wearing action caused by the continual engagement of the picker stick with said picker.

I claim:

1. A shuttle checking mechanism for looms comprising, in combination, a lay, a shuttle box. for said lay, a plurality of guide rods mounted upon said shuttle box, a bumper yiseldirrrly mounted upon said rods, a picker adapted to engage said bumper, and means actuated! by'said lay to positively return said picker to a predetermined position of rest.

2. A shuttle checking mechanism-r for looms comprising, in combination, a lay, a shuttle box for said lay. a oluralit of guide rods mounted upon said shuttle boxa bumper yieldmgly mounted upon said rods, a picker adapted to engage said bui'nper', a rod adapt-'- ed to operati vely engage said bumper, and a cam for o :)erat1ng said rod, whereby said picker may be returned to a predetermined position of rest; V I I 8. A shuttle checkingmechanism for looms comprising, in combination, a lay, a shuttle box for said lay, a plurality of guide rods:

n-rou-nted upon said shuttle box, a bumper sl'id ably mounted upon said rods, and embodying therein a plate having an extension projecting therefrom, springs upon said rods I y'ieldingly engaging said bumper, a pick-c1 adapted to engage said bumper, a rod mount ed upon: said shuttle box, and a ea-m for operating said rod to force the latter into engagement with said extension, whereby said picker may be returned to a predetermined position of rest. I

4-. A shuttle checking mechanism for looms comprising, in COHlblllfltlO lT, a lay, a shuttle box for said lay, aplurality of guide rods mounted upon said shuttle: box, a bumper slidably mounted upon said rods and embodying therein a plate having an extension projecting therefrom, springs uponsaid rods yieldingly engagingsaid bunrperja picker adapted to engage said bumper, a cushion for said picker and adapted to be engaged by a picker stick, a rod slidabl-y'mounted upon said shuttle box, and a cam for operating said rod to force the latter into engage ment with said extension, whereby said picker may be returned to a predetermined POSition of rest. 1

In testimony whereof I liayehereunto set 111 hand.

GEORGE E. GEOGHEGAN;

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