US1033263A - Shuttle-check for looms. - Google Patents

Description

J. NORTHROP.

SHUTTLE CHECK FOE LOOMS.

APPLICATION rum) SEPT. 12, 1911.

1,033,263. Patented July 23, 1912.

UNITED STATES PATENT OFFICE. I JOIlAS NORTHROP, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR T DRAPER COMPANY,

I OF HOPEDALE, MASSACHUSETTS, A CORPORATION MAINE.

SHUTTLE-CHECK FOR LOOMS.

Specification vof Letters Patent.

Patented July 23, 1912.

Application filed September 12, 1911. Serial Ito 648,887.

To all whom it may concern Be it known that I, JONAS NoR'rHRoP, a citizen of the United States, residing at Hopedale, in the county of lVorcester and State of Massachusetts, have invented an Improvement in Shuttle-Checks for Looms, of which the following description, in connection with the accompanying drawings, is

a specification, like letters on the drawings representing like parts. y

-he invention herein to be described relatch to looms for weaving and more particularly to the means for. arresting or checking the shuttle as it passes into the shuttle boxatthe terminal portion of its picking motion. As the shuttle makes its picklng excursion from one to the opposite side of the 100m and enters the receiving shuttle box, itis desirable that it be gradually, yet effectively, brought to rest 'in proper position and without rebound. To those skilled in v the art the. importance of these desirable characteristics in the checking action of the shuttle is well understood, especially in high speed looms and the so called automatic looms, wherein the supply of filling is renewed at intervals without stopping the machine.

With these well understood desirable characteristics of shuttle checking motions in View the aims and purposesof the present invention will best be made clear from the following description and accompanying drawings of one form of means for carrying the invention into practical effect, it being understood that theinve'ntion is not circumscribed by the details thereof, but in its true scope is definitely ,set forth by the claims. I

In the drawing :-Figure 1 is a side view of suflicient of a loom to make clear the character and operation of the present invent-ion, and its association with other parts; Fig. 2 is a front elevation of-the parts shown by Fig. 1; and Fig. 3 is asection on the line 33, Fig. 1.

The loom frame may be of any desired form and character to properly support the breast beam 2, V

'3, Fig. 1, for the .cam or under shaft 4,

operating parts, and as shown, it comprises the cast metal side frames 1, joined by a and having suitable bearings driven from usual or desired same of printer. The lay 5 .ing shaft 17. The

i may vary has the' usa auaielshxa e,

I one at each end, lengthwise of which works shuttle box after each picking action.

The parts so far described may be all as usual and may operate as heretofore, except as modified in the manner presently to be explained;

Mounted on the cam shaft 4 is the cam 14, adapted to act upon the roll ried by the arm 16 picking 15 carprojecting from the pickshaft 17 is supported to rock under the action of the and as shown, is supported in suitable bearings 18 and 19 carried by suitablesustaining brackets 20 and 21. Projecting from, the

picking cam,

picking shaft is the picking arm 22 which is itself connected to the picker stickT, as by means of the strap 23,- the construction being such that upon rocking movement of the picking shaft under the action of the plcking cam, the picker stick andv perforce the picker will be actua'tcd to impart to the shuttle its picking movemcnt; and upon the completion of the picking movement the return spring 12 may return the picker stick and picker toward the outer endof the shuttle box.

- Except in so'far as thestructure or oper-.

ation of the parts thus far'described may be changed to suit their association with iteatures of the present invention, theyv may be as heretofore common'in the art or of other approved type.

As hereinbefore noted it is desirable that the shuttle shall be brought to rest in proper position in the shuttle box at the completion of its picking movement. Failure in properly positionin the shuttle in the shuttle box may arise rom various causes. For instance the shuttle may have greater momentum at one time than another owin if 'thewshuttle checking force remains the we, obviously the position at which the to its changing load of yarn or filling, or t e'loom in speed, in either ofwhich cases 'cient character for shuttle will be brought to rest will very; In another case the :force of the picking mo tion may be lighter sometimes than at oth s whereupon, under shuttle checking action of substantially constant oinounh the shuttle may not suiliciently enter the shuttle box or it may enter and then rebound. Regardless of cause, the objections to improper positioning or the shuttle in the shuttle hoist are Well unde tood, and the present invention has in v v means of simple and eiiibringing the shuttle to rest properly positioned in its box, and also in simple devices for enebling'tho loom tender to readily adjust the checking action of said means-without in any. way interfering with the loom operation.

In the form of the invention illustrated, movement of the picker and pic rer stick by the shuttle after it has entered the i301; is utilized to create frictional. resistance to such movement of increasing amount dependent upon the momentum oi? the shuttle, and devices are provided to vary the degree of increase to suit conditions of use, all oi? which will appear from the tollmving form of means shown as an embodiment of the invention.

Secured to the picker shaft 17, by the bolt is an arm 25, the free end 26 wheeof has secured thereto one end 27 of a iriction hand 28 passing around a, fixed friction sent. The friction seat preferably se cured to the loom frame, and in the form of such seat illustrated, it is produced by a port of the hearing '19 for the end of the picker shaft, but obviously the friction seat with which the friction. bond cooperates may he ,variously formed within the es entials oi? the present invention. After pming' about the friction sent the band 28 has its other 1 end secured to or connected with n tension spring 29, the construction being such that after the picking action and when the picker stick has been moved outward of the shuttle box by its return spring 12, the friction band 28 will modify further action of the return spring 12 and cause the picker stick and picker to come to rest substantially indicated by Fig. 2, withjhecp iclrer and picker stick in a, position betwe n the inner and outer ends of the shuttle box. In this position it will he 12 holds the picker stick to the left, Fig. 2, but owing to the frictional retardation of the bond 28 on its seat, the picker shsit is prevented from responding to the demands of the spring 12, the picking roll 15 is held clear of the picking cam 14'. and the picker is in a position between the ends of the shuttle hon ready to receive the impact of the incoming shuttle. shutt e stri 1e picker 8, it

coves the noted the return spring 'When the incoming 1 whereupon the picker shaft is turned thi ough its connections with, the picker stick,

end. the arm 25 is caused to bind the triotlOflibd'ild with greater and greater force for securing this variation in retnrding effect of the friction hand, one end of the tension spring 29 is secured to the hooked end 30 of the adjusting rod 31, which preternbly passes upward at the loom side through guides 32 and 83, its upper end being provided with screw threads 34: and suitable adjusting and "lock nuts 35' and 36; the construction being" such that by manipulating the said nuts the rod 31 end perforce the tension of the spring 29 may readily be varied to suit conditions oi? use, Thus Without stopping the loom the loom tender can adjust the checking action of the shuttle 95 checking means and can at once observe the eiiect of: the adjustment-so that the shuttle may be unerringlyhrought to rest in proper position in the shuttle box.

@hriously, changes may be made in deloo tails of "he described means without deporting" from the true scope of the present invention which is definitely stated by the claims. c 1

lVhst is claimed is; I

'1. In aloom, thecomloinetion of the shut tle bore. the picker stick and picker adapted to be moved by the shuttle as it moves in the shuttle box, means actuated by the shuttle movement and including the picker and picker stick to create frictional resistance to such 'moyenient of increasing amount dependent upon the momentum of the shuttle, and means secured to e fixed part of the loom for varying the degree of, increase during the running of the loom.

9-. In a loom, the combination of the shut tle box, a picker rock slisft,'the picker and picker stick, a friction device ferretsrding outward movement of the picker under the 129 action of the shuttle, and means actuated by the picke rock shaft for causing said -l'riction device to act progressively with increasing energy as the shuttle .moves to ward the outer end of the shuttle box.

3. In a loom, the combination of the shut tlc box, a picker roclr shoott, the picker and picker sticln :iric'tion devic :tor retarding movement oft-he picker under the it orthe shin-i set-noted 'hy the 13 picker rock shaft for causing said friction device to act progressively with increasing energy as the shuttle moves toward the outer end of the shuttle box, and means, secured to the loom frame for adjusting the action of the friction device while the loom is in operation.

4. In a loom, the combination of the lay and shuttle box, the picker stick and picker, the picking shaft for actuating the,

stick and picker, means comprising a friction band .and operating arm therefor connected to the picking shaft to retard movc ment of the picker toward the outer end of Y the shuttle box under the action of the shuttle, and devices for regulating the action of 4 said means while the loom is in operation.

6. In a loom, the combination of the lay and shuttle box, the picker stick and picker, the picking shaft for acting upon the picker stick, and means acting frictionally on the picker shaft, to retard rotative movement of the picking shaft in one direction to check the shuttle in the shuttle box.

7 In a loom, the combination of the lay and shuttle box, the picker stick and picker, the picking shaft for acting upon the picker stick, means acting frictionally on the picker' shaft to retard rotative movement of the picking shaft in one direction to check the shuttle in the shuttle box, and means for adjusting the first mentioned means while. the loom is running.

8. In a loom, the combination of a picking I shaft, a picker, devices between the picking shaft and picker for movin each by the other, and means permitting. ree movement of the picking shaft in one direction for imparting picking action to the picker and for exerting a frictional retarding force to movement of the picking shaft by the picker in the reverse direction.

9. In a loom, the combination of a picking shaft, a picker, devices between the picking shaft and picker for moving each by the other, means permitting free movement of the picking shaft in' one direction for imparting picking action to the picker and for exerting a frictional retarding force upon the picking shaft to movement in the reverse direction, and devices for regulating the retarding action of said means while the loom is running.

10. In. a loom, the combination of the picking shaft, a picker, devices between the picker and picking shaft for moving each by the other, a friction band and its seat, and connections with the picking shaft to cause the latter to bind the friction band upon its seat when the picking shaft is moved in one direction.

11. In a loom, the combination of the picking shaft, a picker, devices between the picker and picking shaft for moving each by the other, a friction band and its seat, connections with the pickingshaft to cause the latter to bind the friction band'upon its seat when the picking shaft is moved in one direction, and a device for regulating the action of the'friction band and seat during the operation of the loom.

12. In a loom, the combination of the picking'shaft, a picker, means for operatively connecting the said shaft and picker,

a friction band and seat, one endof said friction band being connected to the picking shaft, and means for holding the other endof the band.

13. In a loom, the combination of the picking shaft, a picker, means for operatively connecting the said shaft and picker,

a friction band and seat, one end of said friction band being connected to the picklng shaft, means for holding the other end of the band, and devices forv adjusting said JONAS NORTHROP.

Witnesses:

WM. 0. PERKINS, E. D. Oseoon.

in the presence of

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