US2267017A - Manual winding core - Google Patents

Description

Dec. 23, 1941. N. DONAHUE V 2,267,017

' MANUAL WINDING 001m Filed June 9. 1941 FIG.4-

FIGS

INVENTOR, N Incl Donahx) 6 BY cum Patented Dec. 23, 1941 UNITED STTES QFFIQE MANUAL WINDING eons Nina. Donahue, Braintree', Mass.

Application June 9, 1941, Serial No. 397,282

\ I 4' Claims. (01228-15) mental units, appliques, or similar objects; from candle-wicking, strips of cloth, yarn, string or thread.

A- primary object of my invention is to provide a ready means for manually and freely allowing th winding of the material upon an improved core or bobbin and for holding the convolutions in juxtaposition when removing and while permanently fastening them together into the finished product.

In accordance with my invention, there is produced 'a small compact unit. It is easy to handle and operate. It is portable and easily fits into an envelope or bag. It is cheap in cost and easy to manufacture. It produces a uniform, symmetrical product and one well tied and firmly constructed. It can be reused indefinitely. Variations in its basic dimensions result in products of variable sizes. Variations in the application of the windings and in the number of turns and number of layers result in products of variable design.

It provides a simple means of forming, tying, and properly holding the product during construction.

Further objects of the invention will hereinafter appear from the following description of a preferred embodiment illustrative of the invention and shown in the accompanying drawing in which like characters represent like parts and in which- Fig. 1 is a front view of a single unit,

Fig. 2 is a side view of Fig. 1,

Fig. 3 is a plan View of Fig. 1,

Fig. 4 shows a variation of cross section embodying my invention,

Fig. 5 shows another variation of cross section.

The device consists of a small bobbin made of wood, rubber or plastic material having a uniform cross section and a longitudinal groove or slot extending its entire length and parallel to its axis. The bobbin or winding core is bevelled or tapered at its ends and is longer longitudinally than transversely.

Referring to the drawing, the device therein shown comprises a bobbin I, with a longitudinal slot 2 in and below its longitudinal surface and extending from end 3 to end 4. 4 are tapered as at 5 and 6. The outer or winding surface 1 may be a continuous surface as in Fig. 1 and Fig. 5 or may consist of a series of contact points 8 and surfaces 9 as in Fig. 4.

To operate the device a tie cord of flexible I material slightly longer than the core is placed The ends 3 and v in the longitudinal slot 2. This cord is entirely below the winding surface so that each turn of the material placed on the winding surface is loop'edentirely around the tie cord.

The" winding rii'aterialis then wound on the The type of winding as to number, layers, and angl of the turns depends on the product desired". I For a" symmetric'alfinished unit to be assembled with other similar units to form larger symmetrical layouts and designs, the same number of turns must be used for each unit, wound at the same angle upon the core.

Variations in the number of turns, the angle and regularity at which they are wound and the number of layers all produce products of different design.

Increasing the area of cross section of the core increases the size of the resulting unit.

Starting adjacent to one end of the core, the required number of turns are wound in one or more layers according to a predetermined count and angle in order to obtain a predetermined result.

The ends of the tie cord are then looped together into a tight single knot. This holds all the turns in a certain definite relative position.

While held in this position by the tie cord,

it is important that the whole fabrication be carefully slipped from the core. The tapered or bevelled ends 5 and 6 make it possible to thus slide the unit from the core without disturbing the position of the turns with relation to each other.

The ends of the tie cord now formed in a single knot are carefully drawn together as tight as possible and a double knot is made. The ends of the tie cord are cut off close to the double knot.

The resulting unit can vary from a fine delicate web to a coarse heavy rosette.

Where a cord is made with flat surfaces 9 and m as shown in Fig. 4 and Fig. 5, two similar cores may be placed with flat surface to flat surface, in order to increase th effective cross section. One tie cord is used and the encircling turns hold the two sections of core together.

The effective cross section may also be further increased by placing fiat inserts between the flat surfaces of similar sections of core.

While the preferred embodiment of my invention has been described in detail and several constructions set forth since changes in the form,

proportions and. details of construction may be resorted to without departing from the spirit and scope of the invention, or destroying any of the advantages contained in th same, heretofore described and defined in the subjoined claims.

I claim:

1. A bobbin comprising a core of uniform cross section, said core being tapered at its ends and containing a slot parallel to the axis of said core, said slot being adjacent to and extending from the longitudinal surface of said core, said slot being adapted to receive and hold under said outer longitudinal surface a tie cord of flexible material, said outer surface being adapted to receive and hold contiguous layers and adjacent turns of flexible material wound upon said surface, said tapered end being'adapted to allow i turns of flexible material wound upon said surface, said tie cord lying within the loops of said turns, said tapered ends being adapted to allow said contiguous layers and adjacent turns to be slipped from said core in substantially unchanged relative position.

3. The process of positioning an unlooped tie cord below the winding surface of a bobbin of uniform cross section, winding one or more layers and turns of flexible material upon said bobbin, looping the ends of the tie cord into a tight single knot so as to enclose all the turns and hold them together, slipping the entire fabrication from the bobbin, tightening the single knotted tie cord and forming a double knot with the ends of said. cord, and removing the said ends ad- 'jacent to the double knot.

4. The process of positioning an unlooped tie cord in a longitudinal position below the winding surface of a uniformly cross sectioned bobbin, winding one or more layers and turns of flexible material upon the winding surface so that each turn of the winding passes around the cord, looping the ends of the tie cord into a tight single knot, slipping the entire fabrication from the bobbin, tightening the single knotted tie cord and forming a double knot with the ends of said cord.

NINA DONAHUE.

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