US848801A - Filling-detecting mechanism for looms. - Google Patents

Description

PATENTBD APR. 2, 1907.

A. E. BENSON. FILLING DETECTING MECHANISM FOR LOOMS.

* Unrrnn s'ra'rns Parana ornron.

ARTHUR E. BENSON, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO DRAPER COMPANY, OF I-IOPEDALE, MASSACHUSETTS, A CORPORA- TION OF MAINE.

- FILLING-'DETECTINGFQI-IxANISM FOR LOOIVIS.

Specification of Letters Patent.

Patented Aplli 2, 19 7- Application filed February 6,1907. Serial No. 355.933;

To on whom it may concern.-

Be it known that I, ARTHUR E. BENsoN, a citizen of the United States, and a resident of Providence, county of Providence, State of ings, is a specification, like letters on the drawings representing like parts.

This lnventlon has for its ob ect the production of means whereby the detecting action of a filling-detector may be advanced or hastened, so that the detection of the presence or absence of the filling takes place earlier in the movement of the lay after the filling has been laid. By thus advancing the detecting action of the detector an earlier and more prompt operation of the mechanism, dependent upon the detection of filling absence, is gained and a-better cooperation of the detector with intact filling is effected.

The various novel features of my invention will be fully described in the subjoined specification and particularly pointed out in the following claims.

Figure 1 is a top plan view of a portion of a loom with one embodiment of my invention applied thereto, the lay being shown at or near back center. Fig. 2 is a transverse section thereof on the line 2 2, Fig. 1, the dotted-line position of the lay and parts thereon showing how the detecting action of the detector is advanced. Fig. 3 is a front elevation of a portion of the lay, the movable grid thereon, and the means connected therewith for controlling its movement.

The lay 1, having the shuttle-raceway 2, the breast-beam 3, the filling detector or fork 4, pivotally mounted on a slide 5, movable longitudinally in the stand 6 on the, breastbeam, the weft-hammer IV, Fig. 1, provided with a hook 7 to cooperate with the tail 8 of the fork when the latter is not tilted on the detecting-pick, may be and are all of usual construction and operate in a manner familiar to those skilled in the art.

In the present embodiment of my inven tion I provide a transverse and undercut guideway 9 (see Fig. 3) in the bottom of the usual recess 10, crossing the shuttle-raceway opposite the filling-detector, and in said guideway is mounted a slideeblo'ck 11, provided at or near its rear end with a series of upright fingers or bars'12, forming a grating or grid so arranged with relation to the fork that on the beat-up of the lay the tines of the fork will be opposite the spaces between the fingers of the grid.

l/Vhen the grid is in the full-line position, Figs. 1 and 2, it is back of the shuttle-path, as with the ordinary fixed grid already in common use; but in my present invention I have provided means for moving the grid forward relatively to the lay on the beat-up of the latter, so that on the detecting-pick the detecting action of the filling fork or detector is advanced or hastened. In other words, the detecting action takes place earlier in the forward movement of the lay, and by timing the weft-hammer accordingly more time is secured between the detection of filling absence or presence and the completion of the forward beat of the lay than is possible by the usual construction.

Referring to the drawings, I have shown depending bearings 13 rigidly secured to the lay at or near the front thereof, and in said bearings is mounted a rock-shaft 14, having a rigidly-attached upturned arm 15, adapted to play in a recess 16 in the front of the lay and connected by a short link 17 with the slide 1 1. A suitable spring 18, wound around the rockshaft 14 and attached at one end to the adj acent bearing 13, is at its other end secured to a collar 19, fast on the shaft. The swinging of the spring is such as to turn the rock-shaft rearwardly to position the slide and grid, as shown in Figs. 1 and 2, with the grid behind the shuttle-path. The rock-shaft has also attached to it a depending short arm 20, having a lateral offset 21 arranged in the path of a bunter 22, fixedly secured to the front portion of the loom-frame, (see Fig. 2,) the said bunter having a cam-like under surface 23. The bunter is so located that'as the lay beats up the lateral extension 21 of the rocker-arm 20 will first engage the cam-face 23, and

thereby the extension 21 will be depressed to.

turn the rock-shaft 14 in its hearings in oppositio'n to the springs 18. Such rotative movement of the rock-shaft swings the arm 15 forward and changes the position of the slide 11 on the lay from full-line position, Fig. 2, to dotted-line position in said figure. In other words, the grid is moved to a posi- ICC under the hunter 22, as will be manifest.

tion nearer the front of the lay, and conse- I forward on and with relation to the lay on its quently nearer the filling-detector.

This I forward beat, to advance the detecting action changed position of the grid relatively to the of the fork.

lay is maintained as the lay completes its forward beat, for the extension 21 slides forward As the lay goes back the spring 18 will return the parts controlled thereby to the position shown in full lines, Fig. 2, as soon as the eX- tension 21 is disengaged from the hunter 22.

The grid is moved forward on and with relation to the lay at every forward beat of the latter; but of course the detector acts only on alternate picks. If the filling is laid properly on the detecting-pick, the forward movement of the grid across the shuttle-pathway moves the filling-carrier to be engaged by the detector earlier in the beat of the lay than would be the case were the grid fixedly mounted on the lay. The tilting of the fork is effected in time thereby to enable the forktail to clear the weft-fork hook, it being remembered that with this arrangement the weft-hammer .is timed to move forward earlier.

If on the detecting-pick the filling fails, the detector detects filling absence and a change in the operation of the loom is effected in any well-known manner.

While I have shown my invention at the shipper end of the loom, it will be manifest that it is not restricted thereto, and it can of course be applied to each grid, if desired, on a double-fork loom, and in the case of fillingreplenishing looms where the filling is changed on the pick toward the replenishing mechanism my invention would be of value, as by applying it at the replenishing side of the loom an increased period of time would be secured to set the replenishing mechanism for operation on the detectingpick.

The specific details of construction may be varied without departing from the spirit and scope of my invention, and various changes in construction and arrangement may be made by those skilled in the art without departing from the spirit and scope of the invention as set forth in the claims appended hereto.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a loom, in combination, a lay, a grid thereon, a filling-fork to cooperate on'the for ward beat of the lay with intact filling laid in front of the grid, and means to move the grid 2. In a loom, in combination, a lay, a filling-fork to detect on the forward beat of the lay, a grid mounted on the lay opposite the fork and movable transversely of the lay, and means to automatically move the grid toward the front of the lay on its forward beat, to advance the detecting action of the fork on the detecting beat.

3. In a loom, in combination, a lay, a filling-fork to detect on the forward beat of the lay, a transverse guideway on the lay opposite the fork, a slide movable in the guideway and having a grid, means to move the slide to position the grid behind the shuttlepath when the shuttle is picked, and means to move the slide forward on the forward beat of the lay, to thereby position the grid to advance the detecting action of the fork.

4. In a loom, in combination, a lay, a filling-fork to detect on the forward beat of the lay,'a grid mounted on the lay opposite the fork and movable transversely of the lay, spring-controlled means to move the grid into position behind the shuttle-path when the shuttle is picked, and means to move the grid toward the front of the lay on its for ward beat, to hasten the detecting action of the fork on the detecting beat of the lay.

5. In a loom, a lay, a filling-detector, and means operative on the forward beat of the lay and carried by the lay to move the filling toward the front of the lay opposite the detector, to hasten the detecting action of the latter.

6. In a loom, in combination, a filling-detector, a lay, and means mounted on and. movable relatively to the lay to automatically hasten the detecting action of said detector upon intact filling on the forward beat of the lay.

7. In a loom, in combination, a fillingde tector, a lay, a grid thereon opposite the detector, and means operating on the beat up of the lay to move the grid forward relatively to the lay, to thereby hasten the cooperation of the detector with the filling if present.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

. ARTHUR E. BENSON.

Witnesses:

ALBERT W. Roenns, HENRIETTA V. BLACKBURN.

ICO

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