US3183943A - Bobbin holder for loom filling battery - Google Patents

Description

May 18, 1965 E. L. REMINGTON BOBBIN HOLDER FOR LOOM FILLING BATTERY Filed April 15. 1963 INVENTOR ELLIOTT LREMINGTQN A TTORNE Y i an United. States Patent ()fi Fice 3,183,943 Patented May 18, 1965 :BOBBIN HOLDER FOR LooM FILLING BATTERY This invention relates to bobbin changing looms Wherein the running shuttle is replenished with filling from time to time automatically through the insertion of a completely wound bobbin to replace one nearing exhaustion. It is more particularly directed to the means for supporting the tip ends of such wound bobbins while they are being held in reserve before being transferred individually upon signal from the loom.

It is the general object of the invention to simplify the small end disc and cut down the assembly time 'by greatly reducing the number of necessary parts.

It is a further object of the invention to obtain, through the reduction in weight, a lessening in the battery vibration which tends to rotate the held bobbins and slacken the filling yarn.

It is a further object to eliminate rust that is usually attendant with this device by substituting a non-corrosive material.

It is a further object of the invention to devise a holder for the tip ends of bobbins, hereincalled a small-end disc, which will be of greatly reduced Weight than has been previously possible.

It is a still further object of this invention to effect a considerable cost saving through the reduction in the labor required for the manufacture and the assembly of this device.

Other objects will be apparent from the following more detailed disclosure.

In automatic looms of the type described, the battery or feeding mechanism usually includes two plates or discs which are adapted for intermittent rotation with a supporting stud. The full bobbins are inserted between the discs and held suspended in pockets under spring pressure induced by various means.

A well-known method is that of holding the tips or small ends of the bobbins in metallic holders that are positioned in a circle near the outer rim of the small-end disc. The holders are inserted into radially disposed slots about the face of the disc and are urged inward by coiled springs. Each holder has a small pocket orcup to hold the bobbin tip which will be pressed in by hand for loading and pressed outward automatically for the transfer to a shuttle.

When bobbins are to be placed into the battery, a short length of filling is drawn from the tip end of each and extended outwardly over the rim of the small-end disc to a circular thread guide and holder which is also fixed to the supporting stud. These parts are held suspended from the loom frame in a horizontal plane and are subject to considerable vibration. During the period of time the bobbins are awaiting transfer, there has been a tendency for them to unwind sufficiently to slacken the held end of yarn. This may cause an imperfect transfer and stop the loom or form a weaving defect. By reducing the weight of the suspended parts, this fault is noticeably lessened.

The small-end discs and the small-end holders of the prior art have had the problem of rust and corrosion on those surfaces which contact the filling yarn. a costly operation to disassemble the mechanism to clean and polish the contact surfaces. With the instant invention this will be no longer required.

Definite cost savings through the reduction of materials and labor can be efiected with a small-end disc of unitary It has been construction as disclosed in this specification. Batteries of twenty-two or twenty-eight bobbin capacity have required a like number of tip holders and springs to be assembled on the small-end disc for each loom. Many spare parts may now be omitted from a mills inventory.

The invention will be described by reference to a specific embodiment thereof as illustrated in theaccompanying figures of drawing, wherein:

FIG. 1 is a front elevation of the replenishing end of a loom with the invention in position thereon;

FIG. 2 is a side elevation of the invention on a loom showing a portion of the inner face with the bobbins removed;

FIG. 3 is a section taken on line 3-3 in FIG. 2 showing the position of the yielding portion when a bobbin is received or discharged; and

FIG. 4 is similar to FIG. 3 showing the bobbin tip as held by the indentation.

Now referring to FIG. 1, a loom to which the invention has been applied comprises, among other parts, a loomside 10, breast beam 11, hand rail 12, and a battery hopper stand 13. Extending outwardly from the base of the hopper stand a stud 14 supports a thread cutting and holding device 15 and also carries the transferring mechanism of which only the transferring spring 16 is shown.

A stud 17 is fastened to the hopper stand 13 by a nut 18 and is the supporting means for the rotary battery. A bobbin butt supporting plate and hub (not shown) are rotatably held upon the stud 17 adjacent the outer face of the hopper stand 13. Fastened for intermittent rotation with the butt supporting plate is a small-end disc generally designated 19. Outwardly from the small-end disc and adapted to rotate therewith is a thread guide 20 and thread holder 21 which may be of any usual type.

Now referring to FIGS. 2, 3, and 4, the small-end disc 19 with which this invention is involved is shown as a circular, generally saucer-shaped plate. The low circular center area 22 slopes upward radially to a high point 23 and then flares outwardly in a reverse direction to form a rim 24 whose outside edge 25 reaches a point on the plane of the center area 22. The disc is reinforced by integrally formed raised ridges 26 extending radially to the junction of the rim 24. Between the ridges 26 channels 26 rise to the rim 24 in a sharper angle as seen in FIG. 4. It is desirable that the disc 19 be sufliciently rigid to retain its entire periphery in a vertical plane in order to hold the bobbins B with an even tension (FIG. 1). The reinforcing ridges may be of varying designs to accomplish the required results. A center hole 27 is adapted to encircle the stud 17, with holes 28 being used for fastening the disc 19 to the hub of the butt supporting plate.

Arranged in a circle around the face of the disc 19 at the highest point 23 of the curve are a series of bobbin tip indentations 29 (FIGS. 2, 3, and 4). Each indentation is of a depth and diameter as to support a filled bobbin at the tip end during the intermittent rotation of the disc 19 to the point of bobbin transfer. The raised ridges 26 slope upward radially to the high point 23 and there form a level plateau area 30 before reversing direction at 31 to meld with the rim 24. An indentation 29 is centered on each plateau area 34 which is cut on three sides to form a flexible hinged member 32. Two radially directed cuts 33 are connected at their outer ends by a circumferential cut 34.

A bobbin tip positioning groove 35 starts near the rim 24 and extends upwardly on the sloping area 31 and runs into the indentation 29. Each indentation has a positioning groove. In operation, a filled bobbin is positioned, butt first, into the butt supporting plate and then the tip end. is directed to the groove 35 radially opposite the bobbin butt. A slight pressure toward the center of the areaaas disc 19 will force the hinged member 32 to yield (FIG. 3) and the bobbin tip will rest within the indentation 29 (FIG. 4). The hinged member will also yield in the same manner when the robbin is discharged from the replenishing battery into the loom shuttle.

As a hinged member flexes twice for each bobbin it discharges, the disc 19 should be made of a material incorporating the tendency to recover to a high degree. It is also necessary that the disc be sufliciently rigid to hold a full circle of bobbins with constant pressure against the tip ends. A thermo-plastic tripolymer material such as Cycolac A.B.S., Marbon Chemical Co., has been found to be satisfactory for this purpose. Other materials with similar chemical and mechanical properties may be substituted as desired.

The inward ends of the radial cuts 33 have a radius as at 36 to help distribute the strain pattern evenly in a direction away from the flexing area. Flexible member 32, when receiving or discharging a bobbin, will be hinged at a line between the inner ends of the cuts 33.

Before bobbins are inserted into the battery in the usual manner, the yard Y is found and a short length is withdrawn and held. As the bobbin tip is snapped into the indentation 29, the yarn is passed over the rim 24 of the disc 19 and outwardly to the thread guide and tautly around the holder 21. A smooth annular peripheral surface 37 forms a raised filling supporting member to position each end of filling yarn away from the edge which could sever the yard and effect a loom stop (FIG. 1). In FIGS. 3 and 4 is shown a means for making the rim 24 more rigid if it should be necessary. An expanding hoop spring 38 is held within the channel formed by the raised surface 37. In most cases this hoop spring is not required but may be useful where mill conditions cause excessive vibration. Y

The present invention discloses an improved small-end disc for a loom battery by incorporating the tip holders and springs into the body of the disc. It is made of a material which combines high memory characteristics with shape retention and long life expectancy.

While one embodiment of the invention has been disclosed, it is to be understood that the inventive concept may be carried out in a number of ways. This invention is, therefore, not to be limited to the precise details described, but is intended to embrace all variations and modifications thereof falling within the spirit of the invention and the scope of the claims.

I claim:

1. A small-end disc of unitary construction for the filling replenishing battery of a loom comprising a circular series of pressure yielding indentations being adapted to sustain the tip ends of filling bobbins, bobbin tip positioning grooves leading to each of said indentations, each indentation in said series being centrally positioned on a flexible integrally formed member, said flexible member being formed between two radially directed cuts connect-ed at the outward ends of said cuts by a circumferential cut the inward ends of said radially directed cuts delimiting a flexible hinged area, and a smooth raised annular peripheral surface for separately supporting the end of filling from each bobbin.

2. In a loom, a rotatable filling battery adapted to contain a series of wound filling bobbins in circular arrangement which comprises a plate adapted to retain the butts of filling bobbins in spaced separation, a connected smallend disc member of unitary construction including a circular series of pressure yielding indentations being adapted to sustain the tip ends of filling bobbins, bobbin tip positioning grooves leading inwardly to each of said indentations, each indentation in said series being centrally positioned on a flexible integrally formed member, said flexible member being formed between two radially directed cuts, said cuts being connected at their outer ends by a circumferential cut, the inward ends of said radially directed cuts delimiting a flexible hinged area, a smooth raised annular peripheral surface for separately supporting the end of filling from each bobbin, and a circular thread guide being adapted to rotate with said plate and said disc.

References Cited by-the Examiner UNITED STATES PATENTS 830,397 9/06 Wood 139-248 1,407,423 2/22 Jackson 139-249 1,430,005 9/2 2 Crompton et al 139--349 1,528,468 3/25 Crompton 139-249 FOREIGN PATENTS 7,285 4/02 Austria.

DONALD W. PARKER, Primary Examiner.

Claims (1)

1. A SMALL-END DISC OF UNITARY CONSTRUCTION FOR THE FILLING REPLENISHING BATTERY OF A LOOM COMPRISING A CIRCULAR SERIES OF PRESSURE YIELDING INDENTATIONS BEING ADATPED TO SUSTAIN THE TIP ENDS OF FILLING BOBBINS, BOBBIN TIP POSITIONING GROOVES LEADING TO EACH OF SAID INDENTATIONS, EACH INDENTATION IN SAID SERIES BEING CENTRALLY POSITIONED ON A FLEXIBLE INTEGRALLY FORMED MEMBER, SAID FLEXIBLE MEMBER BEING FORMED BETWEEN TWO RADIALLY DIRECTED CUTS CONNECTED AT THE OUTWARD ENDS OF SAID CUTS BY A CIRCUMFERENTIAL CUT THE INWARD ENDS OF SAID RADIALLY DIRECTED CUTS DELIMITING A FLEXIBLE HINGED AREA, AND A SMOOTH RAISED ANNULAR PERIPHERAL SURFACE FOR SEPARATELY SUPPORTING THE END OF FILLING FROM EACH BOBBIN.

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