US1518117A

US1518117A - Picker-stick check

Info

Publication number: US1518117A
Application number: US602115A
Authority: US
Inventors: Beauchemin Arthur
Original assignee: Draper Corp
Current assignee: Draper Corp
Priority date: 1922-11-20
Filing date: 1922-11-20
Publication date: 1924-12-02
Anticipated expiration: 1941-12-02

Description

A. BEAUCHEMIN PICKER STICK CHECK Filed NOV. 20, 1922 2 Sheets-Sheet l nvenm Afrhur Beuuchemm A. BEAUCHEMIN PICKER STICK CHECK Dec. 2, 1924 1,518,117

Filed Nov. 2o, 1922 2 sneetsneet 2 y I4 9 N 5 l0 i lnvenor. Arhur Beauchemin fp, orion.

'rana Brieven, or BURLINGTON, our; Assreivoa ro DRAPER con- 'roaa'rrora or HorEnALn, messcnusnr'is, A CORPORATION or MAINE.

IEllICHER-STICK` CHECK.;

Application filed November 2o, 1922. serial No. 602,115.

To all whom t may concern. Be it known that I, AITHUR BEAUcHn- MIN, a citizen of the United States, and

resident of Burlington, county of Chitten den, and State of Vermont, have invented an Improvement in Picker-Stick Checks, of which the following description, connecrtion with the accompanying drawing, is a specification, likecliaracters on the draw- 10 ing representing like parts.

This invention relates to a picker stick check or. mechanism forcheclng or retarding the picker stick by means of which the shuttle is picked back and forth across the lay inl a loom. f

The invention has forits object to p rovide a mechanism of this-'ty e comprisinv an endless elongated flat sti resilient and preferably metal loop. l

The invention has for its further object to provide such a loop to ether with means for producing suicient' friction on the sides of the loop to ive the requisite retardation to the loop yw en struck by the picker stick.

The invention has lfor its further object to provide a picker i check mechanism 1n which the requisite retarding friction is secured by means acting to press in opposite directions against'the opposite sidesof an endless elongated flat vstiff resilient and preferably metal loop having a longitudinal sliding movement when struck by the picker stick.

The object of the invention hasfur'therto provide a simple and ecient picker stick check mechanism'readily adjustable to effeet the requisite retardation of the picker stick.

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

As the invention relates solely to the mechanism for checking the movement of the picker stick and as the general construction and operation of a loom including the picking mechanism is well known and familiar to those skilled in the -art it is only necessary' here to illustrate and describe that' portion of the loom directly concerned with the resent invention. Furthermore as the picking mechanism may be and usually is the same at both sides of the loom it is only plate 2 u on which4 the shuttle slides.

necessary here to illustrate `and. describe the construction at one side of the loom.

In 'the drawings:

Fig. 1 is a front elevationof thel upper l left hand 'side of the lay of a loom together with a preferred form of construction embodying the present invention;

Figi '2' is a rear elevation tion shown in Fig. 1; i

Fig. 3 is a view in transverse cross section partially broken away taken on the line 3-3 of Fig. A4;

of .thecon'strucf Fig. 4 is a view in vertical cross section taken on the line 4-4' of Fig. 1.4

The lay l is shown provided with the race At the end t e lay is also provided with the front wall 3 and the binder 4 constituting the rear wall of the box in which the shuttle is located when not on its flight across the lay. The picker stick 5 projects up through a vertical slot in the lay and raceA late and is swung or vibrated longitudinal y of `the' lay in the usual manner to effect the movement of the shuttle. When the shuttle is boxed, as for example at the end ofthe loom illustrated, the picker stick 5 stands in a position shown in the drawings. When the shuttle is to be picked across the loom'to the opposite side the vpicker stick is swung with great :force` toward the center of the loom,

propelling the shuttle from the box and picking it across the lay. The movement of the picker stick toward the center of the lay must be retarded or, checked after it has propelled the shuttleout of the box. When the shuttle returns the picker stick is swung back and, as the shuttle yenters the box, the movement of tlie shuttle is retarded or checked by the binder 4 and alsoby the tip of the shuttle striking the picker stick, or preferably a buffer 7 secured to the picker stick. Thus the picker stick is returned with great force to the position shown in the loom and to the picker stick by the Aincomin shuttle is very great and very sudden an is constantly occurring during the operation of the loom often several times a second.

lin the preferred form of construction The mechanism comprises vessentially anl endless elongated flat stid resilient loop preferably formed ot 'fadat strip of metal such as steel. ln the construction illustrated this loop comprises the side 8 .termi' nating in the curved, referably semi-circular,

ends

9 and 10. 'The side of the loop opposite the side 8 is frmed by the overlapping ends 11 and 12 of the metal strip which are permanently secured together in any lsuitable manner as for examp e by the rivets 13. The inner surfacesA of the

curved ends

9 and 10 are provided with buders 1d of leather or other suitable material to receive directly the blow of the picker stick. e

This loop is supported and guided at its opposite sides and the requisite retardation of the longitudinal movement of the loop is secured by pressing` in opposite directions against the two longitudinal sides to give the requisite friction. p

ln the construction illustrated the sup porting and guiding means comprise two brackets secured to and depending from the lay. The rear bracket 15 is preferably of angular shape iitting against the back and bottom of the lay and is secured thereto by a bolt 16. This bracket terminates at vits lower end in a depending flat arm 17. @ne side, as 8, of the loop is mounted in aflongitudinal recess in a long flat metal plate 18. A. plate 19 of suitable friction material such as leather is placed at the rear/of the plate 18 and over this a second metal plate 20. The three

plates

18, 19 and 2O are secured together as by the screws 21. The three plates with the interposed loop are adjustably andrigidly mounted on the depending arm 17 of the rear bracket as by means' of a bolt 22 passed through a longitudinal slot 23 in the plates and a hole in the arm 17. This bolt is provided with suitable washers 24 and. is locked in place by a nut 25.

The front bracket 26 1s preferably oi angular shape tting against the front and bottom of the lay and is secured thereto by a bolt 27. ln order to secure the requisite opposing transverse pressure of the loop means are provided for adjusting a portion of one of the brackets toward and from the other and for that purpose the front bracket is made in two parts adjustable transversely of the lay. Consequently as illustrated the astenia bracket 26 is provided with a horizontal torwardly projecting biifurcated tlange 28, To this ane is adyustably secured by means ot the bot 29 a @ange 39 projecting `lorwardly from a dat depending arm'll; which is 72 ment strikes alternately the bukers 1d at the ends or the loop and in order to check or f Y retard the movement oi the picker stick the lonoitual movement which will be given to the loop causing it to slide longitudinally in the guiding and Vsupporting means be retarded to bring the pickerstick to rest in the reguired manner.. By adjusting the arm 31o the iront bracket toward or from the rear bracket or in other words, by' elllectL1 .ing a relative bodilytransverse adjustment ot said brackets, means are Vprovided for ib compressing the loop transversely ot its parn allel sidesthereby to produce sucient triction on said sides to give'the requisite retardation to the longitudinal movement oi the loop. The degree ot 'friction im arted to produce the retarding edect rmay e va ried as required by varyin the character of the surfaces thus pressed into contact with .the opposite sides ot the loop and such a means is illustrated in connection with the rear bracket in the provision olf the plate 19 which is disclosed as made of leather or other suitable frictional material,

This mechanism is found in practice to itS "f 'iiD produce thedesired results and secure Vrequisite retarding action. The final position of the loop at the end otits movement in'either direction may be dehnitely secured by permitting the ends ot the bucers let to n said brackets thereby to produce sumcient friction on the sides of the loop to give the requisite retardation to the loop when struck by the picker stick.

2. A picker stick check for looms coreprising a support, an endless elongated 'stift resilient loop mounted to slide lon itudinally on the support, and Ameans for compressing the loo transversely oie its sides thereby to pro uce sucient friction on the sldes of the loop to give the requisite requisite retardation to the loop when struck' by the picker st1ck.

4. In a loom-having a lay, a plcker stick check comprising a pair of oppositely disposed brackets secured to and de ndn 1 from the lay, an endless elongated at sti resilient loop supported at its sides in saidl bracket and mounted to slide longitudinally 20 therebetween, and means for ad]usting one of said brackets toward and from the other p d thereby to produce suiicient friction on the sides of the lloop tardation to the picker stick.

In testimony whereof,

to give the requisite reloop when struck by they.:

I have signed my name Vto this specilclagtion.

ARTHUR X BEAUCHEMIN.

mark

Witness to mark:

J. H. Wmoox.