US1926738A - Filling replenishing loom - Google Patents

Description

Sept. 12, 1933. c. D. BROWN 1,925,738

FILLING REPLENISHING LOOM I Filed March 16. 1932 I 2 Sheets-Sheet l W/T/VESS, INVENTOR. C4 uvroxvSCosueN. 5 CAEL 0. BROWN.-

[ATTORNEY Sept. 12, 1933.

v C, D. BROWN FILLING REPLENI SHING LOOM Filed March -1e.- 1932' 2 Sheets-Sheet 2 INVENTOR.

CAEL 0. BROWN.

w/ T/VESS I CL m/ro/v 6. Coal/EN.

ATTORNEY Patented Sept. 12, 1933 {UNITED STATES PAT NT- .FIlZLI NG 'REPLENISHINVG tooM CarLD. Brown, Roped-ale," Mass, assigncr to Draperfiorporation; Hopedale,. Mass; a cor-' poration of Maine 1 Application March 16, 1932; I Serial No. 599,226.

6 Claims. (Cl. 133-231 This invention relates to filling replenishing looms of the type including a shuttle feeler for revoking the call for filling replenishment when the shuttle is not boxed properly. I

It is usual practice in, such looms to operate a series of mechanisms from a single cam on the cam shaft. That is, the single cam operates a so-called weft hammer which, in turn furnishes anisms from a single cam, while desirable for many obvious reasons, makes it difficult to obtain the proper timing of the various parts. The cam ordinarily used impartsa sequence of movements tothe weft hammer that times the operation of the various mechanisms satisfactorily except" that the shuttle feeler isoperatedtoo early, it frequently happeningthat the shuttle feeler is moved, rearwardly into the path ofv the shuttle" before. the latter has completed its flight, with" various disastrous results. Oneway to overcome this difiiculty, without disturbing the other parts involved; is to delay the time of movement of theshuttle feeler until the shuttle has had, ample time in which to complete its flight. Devices for accomplishing this" 3 result are disclosed in'the' Rhcades Patent 1,328,-

452 granted January 20, 1920. While the Rhoades device operates satisfactorily it is sub-' ject to a. number of disadvantages,'not the-least.

4 of'which are that the positioning of the parts on in operation. To thisend, the invention-contemplates the provision of delaying partsjcarried by the shuttle ,feeler itself and the shuttle ,feeler supporting bracket, wherebyithe entire shuttle feeler mechanism. is selfcontained and may be assembled in the loom as a unit, thus dispensing with. the necessity for correlating and fitting vari-v ous independently mountedparts.

the top of the breast beam is inconvenient and usual reciprocating lay 1 carrying a reed 2, the

It is usual practice to provide filling replenishing looms with aithre ad'cutting and holding device, for severing the filling extending from the selvageto the shuttle,'just before replenishment; such device operating in the region of the shuttle and serving also to'hold the end-leading to theselvage-until it is trimmed off by the usual selvage trimming devices, such as the temple threadcutter. In the construction heretofore employed, regardles'sof whether the thread cutting and holding device was mounted on the shuttlefeeler or merely operated thereby, the in-' terconnection'between the shuttle feeler and the replenishing mechanism results in the; thread 'cutter having the following movements:

first, rearwardly to operative position, then a quick snap forwardly and rearwardly while the replenishing operation takes place, and then a final forward movement to inoperative position, The quick snap forwardlyand rearwardlyis 'undesirable as it serves to place an-undue strain on the filling extending from the thread cutter to thefselvage, and oftentimes either breaks the filling or causes it to pull out from between the jaws. of the cutter, whereupon the end will not be brought within range of the selvage trimmer and may, indeed, be whipped into the shed and then Woven into the cloth. 7

It is, accordingly, a further object of my invention to providemeans for holding the thread cut- 'ter in its'forward retlactedpositionafter it has been moved thereby the connections withthe replenishingmechanism, thus preventing it from snapping rearwardly before being finally moved to ;frontward inoperative position. This object maybe conveniently accomplished by the, proper arrangement of the shuttle feeler delaying parts;

Further objects of my invention will, in part, be hereinafter more specifically pointed out, or will become obvious] as the description proceeds.

{Referring to the'drawings, in which:

Fig. L is a perspective View of the right front corner of a loom embodying my invention:

Fig. 2 is an elevation-of the shuttle feeler and its operating. and delaying-devices, taken" from the right of Fig. 1, certain parts beingbroken away or omitted to more clearly show my invention, and

Fig. 3 is a view similar to Fig. 2 but showing the shuttle feeler in its forward inoperative position; 1

*The loom illustrated the drawings, to which my invention has been applied, may include the upper surface of the lay, and front surface of the reed serving to guide a shuttle;3 which is picked from side to side of the loom, along the lay, and is received at opposite ends of the lay in shuttle boxes, only the right hand box, 4, being illustrated.

The loom may also include a suitable replenishing mechanism, herein shown as a hopper 5 for holding a reserve supply of full bobbins and a transfer hammer 6 operated by a bunter 7 on the lay when dog 8. is properly positioned to be struck thereby. The positioning of dog 8 for replenishment is accomplished through the medi-.

um of shaft 9 and connections hereinafter described, the shaft being operated from the usual weft hammer under control of the filling feeler.

or filling fork, as the case may be.

The foregoing, and other elements of the loom not illustrated, may be of any suitable usual con struction and, since they form no part of the present invention, they do not require detailed description. Suffice it to say that, upon call for replenishment, shaft 9 is rotated counter clockwise from the position shown in Fig. 3 and maintained in this rotated position until after the replenishing operation is completed. Since this rotation starts shortly after the time the lay starts back with the shuttle in the left hand box and is completed before the lay starts forward again (the shuttle having been picked in the meantime) the shuttle feeler will be moved to rearward operative position before the shuttle has completed its flight. Should the shuttle be a little slowin its movement it will be carried forward by the lay and reed and may strike the shuttle feeler. It

' is with the prevention 'of this interference between the shuttle feeler and shuttle that one aspect of my invention is concerned.

Shaft 9 carries an arm 10 to which a forked lever 11 is pivoted as at 12. One arm of the lever 11 is engaged by a coiled tension spring 13 and the other arm is forked as at '14 to engage a pin 15 extending laterally from the arm 16 of the shuttle feeler. Also extending laterally from the shuttle feeler, but in the opposite direction from pin 15, is a pin 17 carrying a cam 18 for controlling a pin 19 projecting from a downwardly extending portion of dog 8. i It is noted particularly that arm 10, lever 11, spring 13, etc., serve to yieldingly move the shuttle feeler to operative position. v

'The foregoing shuttle feeler and replenishing parts may be, and are shown as, identical with those disclosed in the patent to E. C. Nichols, No. 1,820,821, granted August 25, 1931, although other arrangements may be employed if desired.

7 The shuttle feeler is, as shown, pivoted on-a' bolt 20] projecting from a bracket 21 adjustably secured as by bolts or screws 22 to the loom frame. The bracket 21 carries a fixed stop 23, preferably formed as an integral extension on the bracket. A movable latch member, herein shown as a lever 24, is pivoted at one end-on a stud 25; fixed in an arm 26 formed integral with the shuttle feeler. The other end of the member Zisprovidedwith a lug 27 having a face adapted to engage stop 23 and hold the shuttle feeler in an intermediate'position against the action of the yielding moving means for the shuttle feeler; A spring 28, having one end fixed to pin 25 and the other end engaging the top of lug 27, serves to bias the member 2e to the position where lug 27can engage stop 23 when the shuttle feeler is moved rearwardly;

A bell crank lever, pivoted at29 to the arm 26 of the shuttle feeler, has one arm operativcly at the time of transfer.

related to the member 24 and its other arm 31 extending vertically in the path of a bunter 32 carried by the lay, operation of the bell crank lever by the bunter serving to lift member 24,

of any of a member of constructions now well known and therefore need not be illustrated or described in minute detail. Such prior art thread cutters operate in the region of the shuttle and are either mounted directly on the shuttle feeler or supported by the battery and moved by the shuttle feeler. former type, merely as a matter of convenience.

The operation of the device is as follows: Assume that after a call for-replenishment, the shuttle is just being picked toward the replenishing side of the loom, the lay is making its back ward stroke, and shaft 9 is turning to raise arm 19. When arm 10 has moved the shuttle feeler rearwardly approximately half of its total movement lug 27 will engage stop 23 and hold the shuttle feeler in this intermediate position. Continued movement of the arm will result in lever 11 pivoting about pin 15 as a fulcrum, with a resultant stressing of spring 13. 7

During the time required for the lay to com- I have illustrated the plete its rearward stroke and move. forwardly again, on the replenishing beat-up, to the position near the end of its stroke, Fig. 2, the shuttle will have completed its flight and boxed on the replenishing side of the loom. Then, as the lay approaches the forward end of the stroke, bunter 32 will strike arm 31 of the bell crank lever, causing the other arm 30 to lift member 2&1, thereby disengaging the latter from stop 23 and allowing spring 13 to quickly move the shuttle feeler the rest of theway to its rearward operative position. The thread cutter then operates to sever and clamp the filling extending from the shuttle to the selvage.

If the call for replenishment is not revoked by the shuttle feeler the transfer hammer 6 will be operated by hunter *1 striking dog 8, while the lay is at front center. Movement of the-transfer hammer operates, through dog 8, pin '19, cam

18 and pin 17, to retract the shuttle feeler forwardly. Then, when the lay goes back and the transfer hammer rises, spring-13 tends to snap the shuttle feeler and thread cutter rearwardly again. This, however, is prevented by the reengagement of lug 2'7 with stop 23, bunter 32 having moved far enough back to release arm 31 of the bell crank lever and permit spring 33 to return the latter to normal position. Then, after the lay is well back, shaft 9 is rotated to lower arm'10 and thus return the parts to their normal. position.

It is apparent from the foregoing that I have provided not only an improved shuttle feeler delaying device but also means for preventing a forward and rearward snap of the thread cutter The particular embodiment herein disclosed is, of course, merely illustrative of one way in which my invention may from the spirit of the invention as defined inthe appended claims. Having fully disclosed the preferred embodiment of my invention, I claim:

1. In a filling replenishing loom, a shuttle feeler, means for yieldingly moving the shuttle feeler to operative position upon call for replenishment of filling, a fixed stop, a movable member carried by the shuttle feeler for engaging the said stop and thereby holding the shuttle feeler in an intermediate position, and awlever,

likewise carried by the shuttle feeler, for disengaging the said member from the said-stop;

whereby the movement of, the shuttle feeler to operative position is momentarily delayed against the action of said yielding means.

2. In a filling replenishing loom, the combination of the lay, a shuttle feeler, means for yield-, ingly moving theshuttle feeler from frontward,

to rearward operative position, upon callfor replenishment of the filling, a fixed stop, a movable member carried by the shuttle feeler for engaging the said stop and thereby holding the shuttle plenishment of the filling, a fixed stop, a lever pivoted on the shuttle feeler and. spring-biased to a position Where it can engage the said stop to thereby hold the shuttle feeler in an intermediate position against the action of said yielding means, a bell crank lever pivoted on the shuttle ieeler and having one arm thereof in operative relation to the first mentioned lever, and means for causing saidbell crank lever to disengage the said first named lever from the said stop as thelay approaches the end of its stroke on the replenishing beat-up. l

4. A shuttle feeler delaying device including, in

combination with the shuttle feeler movable to andfrom operative position and a bracket for supporting the same, a fixed stop carried by the said'bracket, a movable member carried by the shuttle feeler' for engaging the said stop and thereby holding the shuttle feeler in an inter mediate position, a bell crank lever pivoted adjacentthe said member and having one arm in operative relation thereto, and means engaging the other arm of said lever for disengaging the said member from said stop.l

5. A shuttle feeler delaying device including, in combination with the shuttle 'feeler movable to and from operative position and a bracket for supportingv the same, a'fixed stop mounted inde-,

pendent of the shuttle feeler, a movable mem her associated with the shuttle feeler for engaging the said stop and thereby holding the shuttle feeler in an intermediate position, a lever pivoted to the shuttle feeler and having one arm in operative relation'to said member, and means for operating the other arm of said lever to there- 7 by disengage the said member from said stop.

6. In a filling replenishing'loom, the combinationof the lay, a thread cutter for cutting the filling in the region of the shuttle, means for yieldingly moving the thread cutter to rearward operative position upon call for replenishment of the filling, said means tending to hold the lid connectionsserving to retract the thread cutter from operative position'against the action of the said yielding means when the replenishing operation takes place, and means including a latch for latchingthe thread cutter in such retracted position. v

CARL D. BROWN.

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