US2107847A

US2107847A - Bobbin holder

Info

Publication number: US2107847A
Application number: US119486A
Authority: US
Inventors: William H Bahan
Original assignee: Individual
Current assignee: Individual
Priority date: 1937-01-07
Filing date: 1937-01-07
Publication date: 1938-02-08
Anticipated expiration: 1955-02-08

Description

Feb. 8, 1938. w BAHAN 2,107,847

BOBBIN HOLDER Filed Jan. 7, 1937 2 Sheets-Sheet 1 W/LL/nm H. BAHAN Feb. s, 1938.

BOBBIN HOLDER Filed Jan. '7, 1937 2 Sheets-Sheet 2 WILL/HP! H. 5HHAN grwvwto'v w. H. BAHAN 2,107,847 I Patented Feb. 8, 1938 UNITED STATES PATENT OFFICE Claims.

v This invention relates to means for holding the I lowermost filling carrieror bobbin in a magazine loom so as to prevent its rotation or oscillation prior to being transferred into the shuttle of the loom. o

In magazine looms, filling carriers are placed inga rotating hopper sometimes called a battery and lthe'ends from the carriers are wound around the axis on which the hopper plates are mounted 0 so as to provide an end which can be used by the thread grippers for'gripping the ends when the 'filling'carrier is transferred into the shuttle upon the exhaustion of the filling on the preceding carrier; I i

'It has been experienced heretofore that .vibration in the loom causes rotation or oscillation of the lowermost filling carrier in the magazine loom prior to its transfer to the shuttle, and the end of the thread extending therefrom will become broken so that 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 and a mis-pick or thin place in the cloth will occur. 25, It is therefore, an object of this invention to vprovide means for holding the lowermost filling carrier. or bobbin in a magazine prior to its transfer into the shuttle of the loom, so' that the filling 3o transfer into the shuttle.

'It is a further object of this invention to provide a bobbin support for normally engaging the lowermost filling carrier in a 100m magazine, said support being carried by the transfer arm. of the loom and being automatically operable thereby 'to; relieve said pressure upon bobbins upon the actuation of the transfer arm to transfer the filling carrier into the shuttle.

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 drawings, in which:

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

" Figure 2 is a sectional plan view taken along line 2- -2 in Figure 1 showing the lay disposed 50 directly therebeneath in a position for receiving a bobbin or filling carrier of a magazine;

Figure 3 is an elevation taken along line 3-3 in Figure 1. v

-Figure 4 is a transverse sectional view through 55 ayloom similarto that shown in Figure 1 but,

carrier cannot oscillate or rotate prior to its showing a modified form of a bobbin support secured thereto;

Figure 5 is a sectional plan view taken along line 5-5 in Figure 4 showing the lay therebeneath in bold lines;

Figure 6 is an elevation taken along line 6--6 in Figure 4;

Figure 7 is an isometric view of one end of the bobbin engaging means showing the serrations in the engaging face thereof.

Referring more specifically to the drawings, the numeral l0 denotes a conventional hopper'stand for a battery loom which has rotatably mounted therein hopper plates II and I2 which are spaced from each other for supporting the filling carriers 14. As heretofore stated when a filling carrier I4 reaches its lowermost position where it is to be transferred into the shuttle there is a tendency for the filling carrier to oscillate or rotate, thereby breaking the ends of the yarn and causing a mis-pick in the cloth which is being woven. It is, therefore, necessary to provide a supporting means for normally exerting a pressure against the lowermost bobbin to stabilize the same to prevent this vibration. In order to accomplish this result, I have provided a bobbin support l5 which has a resilient tip portion 16 for normally engaging the filling on the lowermost filling carrier l4. The other end of member I5 is rotatably mounted upon pin I1, which pin is rotatably mounted in the lower end of leg l9 of transfer member 20. A suitable dog 2| is fixedly secured as at 22 to the pin I1 and is adapted to be normally held in the bold line position as shown in Figure l by means of torsion spring 24, said torsion spring having one end thereof normally secured to collar I la which is integral with o pin l1 and the other end of said spring being secured around the transfer leg Hi. It is evident that the torsional stress exerted by this spring will tend to rotate the dog 2| in a clockwise manner. The member I5 is slidably supported, intermediate its ends by means of an eye bolt 26 which projects outwardly from the base of hopper stand ID. This pin has an eyelet in the end thereof which slidably confines the intermediate portion of member I5. The transfer member 20 has a laterally extending arm 21 which is adapted to engage the filling carrier [4 when a transfer is made.

In the normal operation of the loom, lay 29 oscillates back and forth and at the same time the shuttle 30 traverses the loom, back and forth, to cause the filling upon filling carriers H to be placed in the warp. Upon the exhaustion of yarn upon the filling carrier It, which is in shuttle 3G, suitable conventional mechanism will be thrown into operation to cause the transfer member'2il to assume the dotted line position as shown in Figure 1. At the same time, the lay of the loom will be in dotted line position and also the dog 2! will be caused to rotate to its dotted line position. In other words, the hunter 3!, which is secured to lay 29, will engage dog 2% to rotate: the transfer member 2E3 to the dotted line position which will cause the filling carrier i l to be transferred into the shuttle 3:3. It will also be noted that shortly prior to the transfer the bobbin support IE will be Withdrawn from the lowermost filling carrier simultaneously with the movement of arm 21 thereby allowing transfer arm 'f'l to transfer the lowermost bobbin without any obstruction. Immediately after the transfer, the hopper plates H and I2 rotate until the next bobbin assumes the lowermost position previously occupied by the bobbin transferred, and the members will again assume their bold line position at which time the bobbin support will be engaging the yarn on the lowermost bobbin.

The transfer arm 27; is normally held in raised position as shown in bold lines in Figure 1 by means of conventional torsion spring 29a. This spring also holds member it against the yarn on the lowermost bobbin.

It is therefore, seen that I have provided means for supporting the lowermost bobbin in a magazine-loom, said means being carried and operated by the transfer arm so that the bobbin support will not interfere with the transfer operation.

Figures 4 to 7 inclusive, show a slightly modified form of a bobbin support which is adapted to be secured in a similar manner to that shown in the preceding form, except that the holding means for the support is normally carried by the transfer arm pivot 26b. 1 In this form the downwardly extending leg I9 of transfer arm 2! has pivotally secured thereto a bolt H which, in turn, supports the dog 2!. The bolt I! also rotatably supports a washer member 35, to which is integrally secured a threaded rod portion 36, said rod portion being threadably secured in a slotted member 31'. The free end of slotted member 37 has a T-shaped arcuate member 38 integraltherewith which member has serrations 39 in its. face for engaging the yarn on the lowermost bobbin l4. member 3? has a longitudinal slot it therein which is penetrated by stationary pin 4i. pin extends laterally from the free end of arm 42, which arm 42 is secured to transfer arm pivot 281) by any suitable means such as set screw 43.

It will be noted that by mounting of bracket 42 in the manner shown, it is possible to rotate the free end of the bracket and its associated pin H to the desired position and then fix it in position by means of set screw This will allow adjustment of the angle of approach of portion 38 on the free end of member 3?, relative to the yarn, and thereby insure that the lowermost bobbin M will be properly engaged at theproper time. Also by providing the threaded portion 36, the overall length of the bobbin support can be regulated. That is, if the serrated face 39 projects to the right too far, the necessary adjustment or shortening of this member may be ob tained by removing member 3? and screwing it to the left on the threaded portion 36. It is The intermediate portion of This therefore, seen that the necessary adjustment of the bobbin support can be obtained in this form of the invention.

Likewise, in this form, the lay of the loom as well as the transfer mechanism is shown in dotted line position as well as in bold line position. This is done to illustrate the position the parts will assume when the transfer of the lowermost bobbin M is made. The transfer is made and the bobbin is supported in a very similar manner to the forms shown in Figures 1 to 3 inclusive, and the transfer position of the parts is shown in dotted line. 7

The rod or shaft 2% 'on which the transfer arm is pivoted, is fixedly mounted at one end in the hopper standby means of a set screw 20c.

In the drawings and specification, 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: r

1. In' a loom having a rotary hopper for holding a plurality of filling carriers and having a lay for confining a shuttle and having a transfer mechanism including a transfer arm for transferring the lowermost filling carrier from a the hopper to the shuttle upon exhaustion of the filling on the carrier in the. shuttle, said transfer arm having a downwardly projecting arm integral therewith and being disposed at approximately right angles thereto, a member having one end pivotally connected to the lower end of said downwardly projecting member and having a member on the other end thereof for engaging the filling on the lowermost filling carrier and fixed means for slidingly supporting said latter member intermediate its ends.

2. In a battery loom having a rotary hopper for holding bobbins, a lay carrying a shuttle, a transfer arm operable upon exhaustion of the filling on the bobbin in the shuttle for moving the lowermost bobbin in the hopper into the shuttle, said transfer arm having a downwardly projecting arm movable therewith, and being disposed at approximately right. angles to the transfer arm, a member pivotally mounted on said downwardly projecting arm andhaving a member on its other end for engaging the yarn on the lowermost bobbin in the hopper when the transfer arm is normally raised to inoperative position and being movable along with the transfer arm out of contact with the yarn on said bobbin as the transfer arm is swung in a transfor operation, and fixed means slidably supporting an intermediateportion of said member pivotally mounted on said downwardly projecting arm.

3. In a loom having a rotary hopper for hold! ing a plurality of filling carriers and having a lay for confining a shuttle and having a transfer mechanism including a pivotally mounted transfer arm for transferring the lowermost filling carrier from the hopper'to the shuttle upon exhaustion of the filling on the carrier in the shuttle, a transfer pivot for pivotally supporting said transfer arm, said transfer arm having a downwardly projecting arm integral therewith and being disposed at approximately right angles thereto, a member having one end pivotally connected to the lower end of said downwardly projecting member and having its other end engaging the filling on the lowermost filling carrier "ing member intermediate its ends.

' transfer it into the shuttle of the loom and also having a downwardly depending arm, means for engaging the yarn on the lowermost bobbin for preventing the Vibrations of the loom from imparting rotary motion to said lowermost bobbin comprising a bobbin holding member slotted intermediate its end and having one end pivotally secured to the lower end of said downwardly depending arm and having an enlarged portion on its other end for engaging the yarn on said lowermost bobbin, a fixed shaft on which the transfer arm is mounted for pivotal movement at the junction point of the horizontal portion and the downwardly depending portion, and a support secured to said shaft and having means on its other end for entering said slot in said bobbin holding member for slidably supporting the same for movement towards and away from the lowermost bobbin upon operation of the transfer arm.

5. In a loom having a hopper frame and a rotary hopper mounted therein for holding a plurality of yarn carrying bobbins and having a transfer arm operable at times to transfer the lowermost bobbin in the rotary hopper into the shuttle of the loom, said transfer arm having a downwardly depending portion, a fixed shaft on which the transfer arm is mounted for pivotal movement, a member carried by the lower end of said downwardly depending member and projecting towards the lowermost bobbin for engagingthe yarn on the same to prevent rotation of the lowermost bobbin due to the vibrations in the loom, a support carried by the hopper frame and slidably engaging said member carried by the lower end of the transfer arm for supporting and guiding the same during a transfer operation and whereby the member carried by the downwardly depending member will normally engage the lowermost bobbin in the rotary hopper and will move laterally away from the lowermost bobbin upon actuation of the transfer arm.

WILLIAM H. BAHAN.