US1953648A - Bobbin release for weft replenishing looms - Google Patents

Description

April 3, 1934.

A. A. GORDON BOBBIN RELEASE FOR wEFT REPLENISHING LooMs Filed Deo. 26, 1931 2 Sheets-Sheet l April 3 l934- A. A. GORDON 1,953,648

BOBBIN RELEASE FOR WEFT REPLENISHING LOOMS Filed Deo. 2S, 1931 2 Sheets-Sheet 2 31ml ewntor'l @wert (l. wbrdol Patented Apr. 3, 1934 @UNITED .FECE

BOBBIN RELEASE FOR WEFT REPLENISHING- LOOMS Application December 26, 1931, Serial No. 583,294

'7 Claims.

This invention relates to improvements in bobbin releasing devices for multicolor weft replenishing looms and it is the general object of the invention to provide simplified mechanism for accomplishing this result operative during the backward stroke of the lay.

In multicolor weft replenishing looms the bobbin corresponding to the exhausted shuttle is drawn from any one of several reserve stacks and rests on yielding supports as it awaits transfer. If the shuttle should be improperly positioned on the transferring beat the shuttle feeler operates to revoke transfer, but thisaction leaves the bobbin on the supports. It is necessary lto rid the magazine of this bobbin'to. prevent confusion of colors should the next shuttle to become active be exhausted. Many of the devices proposed heretofore for accomplishing this result have operated so as to release thebobbin when the lay is in its forward position. This is particularly true where the release is effected by the shuttle feeler, inasmuch as the latter is reset during the forward stroke of the lay and is therefore effective to drop the bobbin in front of the advancing shuttle.

Multicolor magazines employ in their co-nstruction a reciprocating actuator which coacts both with the weft detector and color selecting mechanism of the magazine. This actuator has a down motion on detecting beats of the loom and an up motion on non-detecting beats operative to advance a bobbin toward transfer position. The actuator dwells intermediate its extreme positions toy permit lateral shifting of a color slide. It is an important object of my present invention to provide a bobbin support normally in supporting position but movable by the actuator during the latter part of the down movement thereof to bobbin releasing position. The support is in its normal position when the actuator is dwelling and also during upward movement thereof, and is therefore positioned to receive and support bobbins which are advancedfrom the stacks toward transfer position.

The bobbin support which moves to release an untransferred bobbin is ordinarily behind the bobbin butt, whereas the actuator is at the front of the magazine, and it is a further object of my invention to provide connections between the aotuator and the support which extend generally around the outline of the magazine plate so as not to obstruct access to the vertical slides etc., which form parts of the magazine mechanism. These connections make it possible to use a lever pivoted to the top of the magazine at a point substantially over the support.

With these and other objects in View which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawings, wherein a convenient embodiment of my invention is set forth,

Fig. 1 is a side elevation of a magazine taken from the interior of the loom and having my invention applied thereto, certain parts being in V section,

Fig. 2 is a detailed rear elevation taken in the direction of arrow 2, Fig. 1,

Fig. 3 is a detailed front elevation of the actuator, together with its lever and the connections 'Z0` associated therewith for operating the bobbin support, and

Fig. 4 is a side elevation of a loom showing the operating connections for the actuator.

Referring to the drawings, I have shown a loom I5` frame l0 supporting a magazine M provided with Vertical slides 11 each provided with a dog 12 at the upper end thereof. Cradles 13 pivoted near the bottoms of and connected to the slides act to advance bobbins toward transfer position. In 8O the present instance there are four groups of bobbins, one for each of the vertical slides, and the latter are provided with upper and lower lugs 14 and 15, respectively, between which extend the fingers not shown of the usual color slide indi- Y cated in dot and dash lines at 16.

A top rock shaft 1'7 journaled in a part of the magazine frame has secured thereto a forward lever 18 connected to a depending rod 19 the bottom of which is operatively related to a transfer latch 20. The latter is supported on a transfer lever 2l which is moved about its pivot 22 by a force transmitted from the lay carried bunter 23 through the latch 20 at transfer.

The rear of the rock shaft 17 is provided with 95 a second lever 24 connected to the upper end of a rod 25 the lower end of which is pivoted as at 26 to a shuttle feeler holder 27. The shuttle feeler 28 is secured to the holder and normally clears the back 29 of the shuttle box on the lay 100 30. The shuttle S is received by the box and provisions not shown are made for detecting the amount of weft in the shuttle.

A vertically reciprocating actuator rod 35 has pivoted to the upper end thereof an actuator lever 36 the inner or left end of which as viewed in Fig. 3 is pivoted to an upright rod 37. The latter is attached by connections not shown to the color slide and serves to rock the latter for the purpose of communicating vertical movements to sol the slides 11. The right end of the lever 36 as shown in Fig. 3 is adapted for cooperation with a trip 33 normally in the position shown in Fig. 3 but movable in a left hand direction under the lever by a weft detector D at indication of weft exhaustion. A lever 39 movable about a pivot located in the lower part of the loom frame is actuated by a cam 46 and has the forward end thereof attached to the bottom of the rod 35.

The mechanism thus far described of itself forms no part of my present invention and operates in the usual manner. The cam 46 gives the actuator its previously described movements, the downward movement from the full to the dotted line position shown in Fig. 3 occurring when the shuttle is under the magazine, or on detecting beats of the loom, and the reverse or upward movement occurring when the shuttle is on the opposite or drop box end of the loom. Certain of the mechanism not essential to an understanding of the operation of my invention is omitted from the drawings for the sake of clearness and it is deemed suiicient to state herein that the actuator operates in the usual time with respect to the other functions of the loom, as set forth in Patent No. 1,030,748. My present invention is concerned with that part of the downward movement of the actuator which occurs immediately after detection, or that part of the motion which continues down after the lay has reached front center and has started rearwardly.

In carrying my invention into effect I provide the actuator with the stud 66 which I extend as i, shown in Fig. 1, said stud forming the pivot for the lever 36. The extension passes through a slot 61 formed in the bottom of an upwardly extending rod or wire 62, this slot being defined preferably by bending the wire back on itself as suggested in Fig. 3. The rods project upwardly through a slot 63 in the forward arm 64 of a lever 65 pivoted as at 66 to the upper part of the magazine. A stop collar 67 is secured to a set screw 68 to the rod or wire in adjusted vertical position so that the stud and the slot 61 can be varied with respect to each other.

The lever extends rearwardly from its pivot as shown in Fig. 1 and has attached thereto the upper end of a tension spring 69 the lower end of f which is connected as at 70 to any convenient part of the magazine. 'Ihe lever 65 extends downwardly and has a boss 71 through which is threaded a stop screw 72 positioned for engagement with a lug 73 of the magazine for one of the tie rods 74. A support 75 for the bobbin is held to the lever in adjusted vertical position by screws 76 which are tapped into the lever and extend through vertical slots 77 in the support. The latter extends downwardly and forwardly, having a foot 78 positioned and proportioned to engage the rear of a d bobbin butt 7S. A stationary forward support 80 for the butt may be provided in its usual form, being relatively immovable under ordinary conditions and serving to guide a bobbin into the shuttle S.

The slot 61 is so disposed with respect to the Stud 60 and the collar 67 as to permit upward movement of the actuator rod 35 from the dwell to high position without rocking the lever 65.

The collar 67 is positioned, however, so that as the actuator nears the bottom of its down stroke immediately after a detecting beat of the lay, the lever will be rocked in a clockwise direction as viewed in Fig. .1. This downward movement of the actuator occurs on those beats of the loom where revocation may leave a bobbin on the support, so that the effect of the motions described is to release the bobbin and permit the same to fall by gravity out of the magazine. It is to be understood that the actuator does not start its downward movement until after the lay has reached front center, as the shuttle must be in its extreme forward position in order to give the weft detector a full throw, and by the time the actuator reaches low position the lay is moving rearwardly.

By changing the position of the collar 67 the amount of the downward motion of the actuator effective to rock the lever 65 may be varied. The spring 69 acts during the upward movement of the actuator to restore the lever to normal position, and acts ordinarily to hold the bobbin support in yieldingly holding position.

From the foregoing it will be seen that I have provided a simple form of bobbin releasing mechanism operated by a device ordinarily found in multicolor weft replenishing looms. It will also be seen that the connections extend from a position in front of the bobbin up, over, and behind the operating parts of the magazine as should be accessible, and these connections include a lever which is pivoted at a point approximately above a bobbin in transfer position. Also, the lost motion connection provided by the rod 62 uses only a portion of the motion of the actuator and permits a variation in the amount of motion used.

Having thus described my invention it will be seen that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein l disclosed, but what I claim is:

1. In a multicolor weft replenishing loom having a lay and provision for advancing a selected bobbin to transfer position, a yielding support to hold the bobbin in transfer position., a regularly moving actuator having a motion away from normal position on detecting beats of the loom during rearward movement of the lay, and connections between the support and the actuator, said connections including a lost motion device rendering the actuator effective to move the support during the latter part only of the movement of said actuator away from normal position,

2. In a multicolor weft replenishing loom having provision for advancing a selected bobbin in transfer position, a yielding support to hold the bobbin in transfer position, an actuator movable in one direction to effect movement of the bobbin toward the support and movable in the opposite direction to effect indication of weft exhaustion, means to connect the actuator and the support. and a lost motion connection forming part of said means and effective to render the latter part of the last named movement only of the actuator effective to move the support away from bobbin supporting position.

3. In a multicolor weft replenishing loom having provision for advancing a selected bobbin in transfer position, a yielding support to hold the bobbin in transfer position, an actuator movable in one direction to effect movement of the bobbin toward the support and movable in the opposite direction to effect indication of weft exhaustion, means to connect the actuator and the support, and a lost motion connection forming part of said means and effective to render the latter part of the last named movement only of the actuator effective to move the support away from bobbin supporting position, said lost motion connection including a rod operatively related to the actuator and having a pin and slot connection therewith.

4. In a multicolor weft replenishing loom having provision for advancing a selected bobbin in transfer position, a yielding support to hold the bobbin in transfer position, a regularly moving actuator, a lever, a pivotal connection between the lever and the actuator, said lever effective to transmit a force from the actuator to advance a bobbin toward a support, a rod having a lost motion connection with the pivot connection, and means to connect the rod with the support, the actuator being effective to transmit a force through the pivot to the rod and cause movement of the support away from bobbin supporting position.

5. In a multicolor weft replenishing loom having provision for advancing a selected bobbin in transfer position, a yielding support to hold the bobbin in transfer position, an actuator having a movement away from its normal position on detecting beats of the loom, a rod extending upwardly from the actuator, means defining a pin and slot connection between the actuator and rod, a lever pivoted at a point substantially above a bobbin positioned by the support, the support being mounted on the lever, and means to transmit a force from the rod to the lever, the actuator moving the rod during the latter part of the movement of said actuator away from said normal position.

6. In a loom having a magazine to store bobbins as they await transfer, means to indicate weft exhaustion and initiate transfer, a bobbin support to retain a bobbin in transferring position, and an actuator operatively related to the means when the latter indicates weft exhaustion to cause said means to initiate transfer and also operatively related to the support to move the latter away from a bobbin which remains on the support if the initiated transfer is revoked.

'7. In a loom having a magazine to store bobbins as they await transfer, weft detector means to indicate weft exhaustion and initiate transfer, a bobbin support to retain a bobbin in transferring position, an actuator operatively related to the detector means and at exhaustion of weft capable of releasing a bobbin from the magazine, the bobbin to be held by the support to await transfer, and means common to the support, detector and actuator whereby a retained bobbin will be released from the support at revocation.

ALBERT A. GORDON.

Images