US2119034A - Bobbin holder - Google Patents

Description

May 3 1, 1938. w BAHAN 2,119,034

BOBBIN HOLDER Filed Oct. 15, 1937 WILLIRM H. BAHAN Patented May 31, 1938 EJNITED STATES PATENT QFFIQE 3 Claims.

This invention relates to means for holding the lowermost filling carrier or bobbin in a magazine loom so as to prevent its rotation or oscillation prior to being transferred into the shuttle of the loom. In battery looms, filling carriers are placed in a rotating hopper and the end from the carriers are secured around the axis on which the hopper plates are mounted. This provides an end which can be used by the thread grippers for gripping the end when the filling carrier is transferred into the shuttle upon the exhaustion of the filling upon the carrier in the shuttle. The vibration of the loom during its normal operation causes rotation or oscillation of the filling carriers in the hopper and more especially in the lowermost filling carrier. This vibration very often causes the end which is wound around the axis to be broken and then when the filling carrier is transferred into the shuttle, the end will not be engaged by the thread gripper; consequently, the filling will not be left in the warp a mispick or thin place in the cloth will occur.

It is therefore an object of this invention to provide means for holding the lowermost filling arrier or bobbin in the magazine prior to its transfer into the shuttle of a loom so that the filling carrier cannot oscillate or rotate prior to its transfer and break the end which leads from the filling carriers.

It is the further object of this invention to provide a bobbin support for normally engaging the lowermost filling carrier in a loom magazine, said support being oscillatably carried by a fixed arm and oscillated by the transfer arm of the loom and being automatically operable upon the actuation of said arm to simultaneously release thereby the pressure upon the lowermost bobbin.

I am aware that bobbin holders have heretofore been provided in which a member is reciprocatably or slidably mounted and engages the filling on the lowermost filling carrier. This structure has the disadvantage of not being drawn directly away from the filling upon a transfer but resulting in a tangential movement with respect to the filling carrier, thus damaging the yarn. By providing a filling carrier holder which is mounted for swinging movement in the arc of a circle, or a true oscillatory movement, the holder is withdrawn from the yarn without chafing the yarn.

Some of the objects of the invention having been stated, other objects will appear as the description proceeds, when taken in connection with the accompanying drawing, in which:

Figure 1 is a transverse sectional view taken through the battery and lay of a magazine loom, showing the invention applied thereto;

Figure 2 is a sectional plan view taken along 11 Figure 1 showing the lay disposed directly tnerebeneath in a position for receiving a 5 bobbin or filling carrier of a magazine;

Figure 3 is an elevation taken along line 3-3 in Figure 1;

Figure 4 is a sectional view taken along the line ii in Figure 3;

Figure 5 is an isometric view of the bobbin support.

Referring more specifically to the drawing the numeral l9 denotes a conventional hopper stand for a battery loom which has rotatably mounted 15 therein plates ii and l2 (see Figure 2) which are spaced apart from each other for supporting the filling carriers 53. This hopper stand also has fixed therein a stud it around which is oscillatably mounted a sleeve !5. A transfer arm com- 20 prising horizontally disposed leg IE and a downwardly projecting leg H, is secured to said sleeve by any suitable means such as set screw it. The free end of the leg i6 is adapted to contact the butt and tip of the lowermost bobbin to transfer 25 the same at the proper time. The parts It and i2, however, are normally held in an elevated position as shown in Figure 1 by virtue of a suitable torsion spring 59, one end of which engages the leg l6 and its other end being fixedly se- 30 cured to washer 2b as at We (Figure 4). This washer is fixed to stud M by any suitable means such as cotter pin 20a.

Secured to the end of the downstanding leg H, as at 2!, is a dog 25 which is adapted to be 35 operated by the conventional filling feeler mechanism, not shown, upon the exhaustion of filling of the warp to cause the dog to be moved to dotted line position. At this time a bunter 26, which is secured to lay 2! will contact the same 40 and cause the arms l6 and I? to be rotated in a clockwise manner in Figure 1 and thereby transfer the lowermost bobbin l3 into a shuttle 28.

As heretofore stated, when a filling carrier l3 reaches its lowermost position where it is to be 45 transferred into the shuttle, there is a tendency for the filling carrier to oscillate or rotate on account of the vibrations in the loom, thereby breaking the end of the yarn and causing a mispick in the cloth which is being woven. It is, therefore, 50 necessary to provide a supporting means for normally exerting a pressure against the yarn on the lowermost bobbin to stabilize the same and prevent this vibration. In order to accomplish this result, I have provided a bobbin support 30 which 55 lower end of bobbin support 30 as at 36 is another link 3! which has its other end threadably secured in member 38 and this member is pivotably secured as at 2| to the lower end of leg ll of the transfer arm. A look nut 38a is also threadably secured around the end of link 3'! normally holding the parts 31 and 38 in fixed position relative to each other. By turning the link 37 the overall length of the parts 31 and 38 can be varied.

Since the supporting arm 33 is fixedly secured on stud l4 it is evident that any movement of the leg 26 of the transfer arm during a transfer of the shuttle will move or rotate the arm 33 on its pivot 32.

Due to the fact that the lower portion of the bobbin support 30 is connected by means of links 37 and 38 to the lower extremity of arm ll, it is evident that as this rotation is effected the contact surface 3| will be simultaneously Withdrawn from the intermediate portions of the yarn on the filling carrier I3 during the clockwise rotation of the transfer arm. This is very desirable because a proper transfer cannot be made without injuring the yarn unless the support is quickly withdrawn at this time.

It is, therefore, seen that I have provided a bobbin support which is oscillatably supported by a fixed arm and which is capable of normally supporting the lowermost filling carrier in the magazine when the same is in normal position. The bobbin holder is thus seen to be movable directly away from the lowermost bobbin by the transferring operation, and is entirely removed from the path of the bobbin being transferred.

In the drawing and specifications there has been set forth a preferred embodiment of the invention, and although specific terms are employed, they are used in a generic and descriptive sense only, and not for purposes of limitation, the scope of the invention being set forth in the appended claims.

I claim:

1. In a replenishing mechanism for a filling replenishing loom, provided with a lay, a hopper for holding a reserve supply of filling carriers, a fixed stud, a transferrer pivoted on said stud, an arm fixed to the stud, a finger oscillatably supported at its upper end by the free end of said arm and having an enlarged lower end provided with a concave surface for engaging the filling on a filling carrier about to be transferred from the hopper into the lay of the loom, said transferrer having a downwardly depending arm, a link pivotally secured at one end to the lower end of said arm and having its other end pivotally secured to the lower portion of said finger, whereby movement of the transferrer on said stud will move the concave surface out of contact with the filling on said lowermost filling carrier before the said lowermost filling carrier is engaged by said transferrer to transfer the same from the hopper into the lay of the loom.

2. In a battery loom having a rotary hopper, a lay, means in the rotary hopper for holding a plurality of filling carriers, a fixed stud, a transferrer pivotally mounted on said stud and having a substantially horizontally disposed arm for engaging the lowermost filling carrier and transferring the same into the lay, said transferrer also having a downwardly depending arm, a member having one end fixed to said stud and projecting substantially parallel with the substantially horizontal portion of the transferrer, a finger having its upper end pivotally secured to the free end of said member and having means on its lower end for engaging the filling on the lowermost filling carrier in said hopper, a link having its ends pivotally secured to the lower portion of said finger and to the lower portion of said downwardly depending arm, whereby downward movement of the transfer arm to transfer a filling carrier from the hopper into the lay will cause said downwardly depending arm to move said finger out of contact with the filling on said lowermost filling carrier and also out of the downwardly directed path of the filling carrier as it is being transferred into the lay.

3. In a battery loom, a transfer arm for transferring the lowermost bobbin out of the battery, a downwardly projecting portion extending from the transfer arm, a fixed arm, a finger pivotally supported at its upper end by said fixed arm and having a bobbin engaging surface on its lower end for normally engaging the lowermost bobbin in said battery and a link connecting the downwardly projecting portion with the lower end of the finger and operable by downward swinging movement of the transfer arm for swinging said finger on its pivot out of contact with the filling on said lowermost bobbin, and tension means for normally returning said transfer arm to elevated position and moving said finger .into contact with the lowermost bobbin in the battery.

WHLIAM H. BAHAN.

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