US2112617A

US2112617A - Shuttle check

Info

Publication number: US2112617A
Application number: US119304A
Authority: US
Inventors: Carl D Brown
Original assignee: Draper Corp
Current assignee: Draper Corp
Priority date: 1937-01-06
Filing date: 1937-01-06
Publication date: 1938-03-29
Anticipated expiration: 1955-03-29

Description

March 29, 193s. C. D. BROWN I l2,112,617

SHUTTLE CHECK Filed Jan. 6, 1937 INVENTOR. C464 Seen/N.'

Fifa. BY

ATTORNEY.

Patented Mar. 29, 1938 UNITED` S'I''I'ES` SHUTTLEy CHECK Carl D. Brown, Hopedale, Mass., assignor to Draper Corporation, Hopedale, Mass., a corporation of Maine Application January 6, 1937, Serial No. 119,304

4 Claims.

The present invention pertains to fly shuttle looms, and has more particular reference to shuttle boxes and shuttl' stopping instrumentalities for such looms.

Looms of the type to which my invention pertains commonly include a reciprocating lay having a shuttle box, a picker stick and picker moving longitudinally of the shuttle box for picking the shuttle, and means in the shuttle box for frictionally retarding the incoming shuttle. In prior constructions, the nal stopping of the incoming shuttle was effected by engagement of the shuttle with the picker, which results in objectionable wear and mutilation of the picker and also in the iinal stopping position of the shuttle varying with the depth of the hole in the picker and with other variable factors.

The principal object of the present invention is to provide a fly shuttle loom having a lay, shuttle box, shuttle and picker as'aforesaid, and novel shuttle stopping means, as defined in the appended claims, for stopping the incoming shuttle independently of the picker.

The aforesaid object of the invention is conveniently accomplished in the construction illustrated on the accompanying drawing, of which:

Fig. 1 is a plan viewof a part of a loom having the preferred embodiment of my invention applied thereto;

Fig. 2 is a view of the same with the shuttle absent from the shuttle box; and

Fig. 3 is a View of the same in front elevation. i

The loom shown on the drawing is generally of conventional construction, except as hereinafter described in detail, and is accordingly but fragmentarily illustrated. Of the vconventional construction, the drawing shows a part of a lay I which is mounted on swords as 2 for reciprocation towards and from the front of the loom, the lay being slotted at 3 to permit movement of a picker stick 4 carrying a picker 5 for picking a shuttle 6. The lay has a shuttle box in which the shuttle is received at the end of its night, and the shuttle box is provided with shuttle checking and stopping devices to be described. It will be understood that a picker, shuttle box and checking devices, not shown, may be provided at the other side of the loom.

The shuttle box shown on the drawing includes a front box plate 'I having a shuttle guiding surface 8 and a back box plate 9 having a shuttle guiding surface ID. The inner end of the front box plate is fixed to the lay by a bolt II and the inner end of the back box plate is fixed to the sword 2, the shuttle guiding surfaces 8 and I being approximately: parallel and spaced apart a distance slightly greaterv than the Width of the shuttle. The inner end I2 of the shuttle box is open, as is usual in looms of this type.V The outer ends of the box plates are xed to the lay in a manner to `be described, andthe outer end of the shuttle box is closed by 'the picker and the novel shuttle stopping means of the present invention.. t f

'I'he shuttle box is provided With any suitable means for controlling theloom protection mech,- anism. To this end, there is shown on the drawing a shuttle operated cam member I3 and a lever I4 operated by the cam for controllinga protector rod nger I5. This controlling means is not of the present invention, it being disclosed and claimed in my copending application, Serial Number 118,593, led December 31, 1936, now Patent 2,084,550 granted June 22, 1937.

The shuttle box'is also provided with a suitable shuttle checking means for retarding the incom-` ing shuttle. I prefer to use for this purpose plungers, shown at I6, loosely mounted in the back box plate and yieldingly urged intofrictional engagement with the shuttle by a spring I'I. In common with other shuttle checking devices, the plungers I6 retard the incoming shuttle but will' not stop it.'

The present invention provides novel means for stopping the incoming shuttle precisely in a predetermined position in the shuttle box inde-V pendently of. the picker. In the embodiment shown on the drawing, the outer end of the front box plate 'I is provided with an integral extension I8 which extends outwardly beyond the shuttle guiding surface 8 to providea shelf of less height than the remainder of the box plate. A lever I9 is pivotally mounted on the extension I8 in front of the path of the picker 5, by being pivoted intermediate its ends'ona bolt 20. The bolt passes down through the lever and the extension and is secured in a ange on the metal lay end 2I. This lever extends generally longitudinally of the lay and shuttle box and is pro'- vided at its inner end with a shuttle engaging surface 22. The surface 22 is inclined outwardly and rearwardly toward the path of the picker, for engaging the usual pointed end of the shuttle adjacent the picker. l

The back box plate 9 is provided with an extension 23, pivot bolt 24, and lever 25 having shuttle engaging surface 2B which are similar to the extension, pivot bolt and lever just described except that, the lever being on the back side of the path of the picker, the surface 26 is inclined outwardly and forwardly toward the path of the picker. The

bolts

20 and 24 may be provided with eccentric portions engaging the respective levers, for adjusting the levers forwardly and rearwardly. 'I'hese bolts also serve as means for fixing the outer ends of the box plates to the lay.

'Ihe shuttle stopping means of the present invention includes spring means for yieldingly urging the

shuttle engaging surfaces

22 and 26 toward each other. I prefer to use for this purpose a single coiled spring which is connected to both levers, the spring 21 shown on the drawing being a compression spring which extends between the outer ends of the levers I9 and 25 and urging said ends away from each `other. The ends of the spring may be positioned in pockets in the levers as shown.

I have also provided adjustable stop means for positively limiting the eXtentto which the levers I9 and 25 may be moved by the spring 21. In the form shown, a lug 28 is formedintegrally with the extension I8 at the outer end thereof and projects upwardly in front of the lever I9. A set-screw 29 is threaded into the lug 28 and engages the lever I9 at a point outwardly from the pivot bolt 20. A similar lug 30 and set-screw 3| are carried'by the extension 23 for cooperation with the lever 25. The set-screws 29 and 3l are separately adjustable to hold the shuttle engaging'surfaces 22 andf26 apart to provide a path therebetween for the picker. Such adjusting means may be utilized to vary the final stopping position of the shuttle in the shuttle box as well as to center the

surfaces

22 and 26 with respect to the picker.

In the operation of the loom, the shuttle stopping levers above described offer very little resistance to the picking of the shuttle out of the shuttle box. When the shuttle returns to the shuttle box shown from the other side of the loom, it rst operates the cam I3 and is thereafter retarded by frictional engagement with the plungers I6. I'he incoming shuttle then strikes the shuttle engaging surfaces of the levers I9 and 25. Such surfaces, being inclined as above described, will center the shuttle with respect to the picker and will then stop the shuttle in a predetermined position in the shuttle box. I prefer that the shuttle be thus stopped before it comes solidly against the picker.

It will be apparent that the shuttle stopping means of the present invention will not permit the stopping position to vary with the depth of the shuttle-receiving hole in the picker, and the variable factors. Furthermore, such means centers the shuttle with respect to the picker and relieves the picker of any shuttle stopping function. I f'lnd that the slight yielding of the shuttle checkin-g levers provided by spring means such as spring 21 is necessary to prevent rebounding of the shuttle.

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

1. In a fly shuttle loom, the combination of a lay having a shuttle box, a shuttle, a picker moving longitudinally of said shuttle box for picking the shuttle, and shuttle stopping means on the lay comprising a pair-of levers pivoted to the lay and extending longitudinally of the lay on opposite sides of said picker, each of said levers having a shuttle ,engaging surface at its inner end, spring means acting on said levers to yieldingly urge the shuttle engaging ends thereof toward each other, and'adjustable stop means for positively limiting movement of said levers by said spring means.

2. In a fly shuttle loom, the combination of a lay having a'shuttle box, a shuttle, a picker moving longitudinally of said shuttle box for picking the shuttle, land shuttle stopping means on the lay comprising a pair of levers pivoted intermediate their ends and extending longitudinally of the lay on opposite sides of said picker, each of said levers having ka shuttle `engaging surface atA its inner end, a single coiled spring connected to said levers and yieldingly-y urging the shuttle engaging ends thereof toward each other, and positive stop means engaging said levers `and limiting movement of the same by said spring.

3. In a fly shuttle loom', the combination of a lay having a shuttle box, a shuttle, a picker moving longitudinally of said shuttle box for pickin-g the shuttle, and shuttle stopping means carried by said shuttle box at the outer end thereof, said means comprising a pair of levers pivoted intermediate their ends and extending longitudinally of the lay on opposite sides of said picker, each of said levers having a shuttle engaging surface at its inner end, a coiled compression spring eX- tending between the outer ends of said levers and yieldingly pushing said ends apart to thereby urge said shuttle engaging surfaces toward each other, and adjustable stop meansrfor positively limiting movement of said levers by said spring.

4. In a, ily shuttle loom, the combination of a lay having a shuttle box, a shuttle having pointed ends, a picker moving longitudinally of said shuttle box for picking the shuttle, and shuttle stopping means carried by said shuttle box at the outer end thereof, said means comprising a pair of levers pivoted intermediate their ends on opposite sides of said picker, each of said levers having at its inner end a shuttle engaging surface which is inclined outwardly and toward the path of said picker for engaging the end of the shuttle adjacent the picker, a single spring engaging both of said levers and yieldingly urging the shuttle engaging ends thereof toward each other, and separate adjustable stop means for each of said levers.

CARL D. BROWN.