US2431928A

US2431928A - Apparatus for forming wire coils

Info

Publication number: US2431928A
Application number: US585136A
Authority: US
Inventors: Armand J Garreau
Original assignee: Individual
Current assignee: Individual
Priority date: 1945-03-27
Filing date: 1945-03-27
Publication date: 1947-12-02
Anticipated expiration: 1964-12-02

Description

DQC. 2, 1947. R U 2,431,928

APPARATUS FOR FORMING WIRE COILS Filed

larch

27, 1945 2 She ets-She et 2 1N VEN TOR.

Patented Dec. 2, 1947 UNITED STATES PATENT OFFIICE APPARATUS FOR FORMING WIRE COILS Armand J. Garreau, Newport, R. 1. Application March 27, 1945, Serial No. 585,136

The present invention relates to the manufac ture of wire in coil form. and has particular reference to an apparatus for the manufacture of coils of y re-determined non-circular shape.

The principal obiect of the invention is to provide an a paratus for winding wire into helical non-circular forms.

Another object of the invention is .to provide an apparatus w ich may be readily changed or adjusted to provide different helical non-circular forms for wire coils.

still another object is to provide an apparatus which is particularly suitable fr winding wire coils into ornamenta forms suitable for jewelry and for general ornamental use.

With the above and other objects and advantageous features in view, the invention consists of a novel arrangement of parts more fully disclosed in thedetailed description following, in conjunction with the accom anying drawings, and more s ecifically defined in the claims appended thereto.

In the drawings,

Fig. l is a front elevation of an illustrative ap aratus embodying the novel invention;

Fig. 2 is an end view thereof;

Fig. 3 is a section on the l ne 3-3 of Fig. 1;

Fig. 4 is a top plan view thereof, parts being broken away;

Fi s. 5 to 8 are illustrative perspective views of difi'erent shapes of wire coils which may be formed w th the novel apparatus;

Figs. Fa to 8a are lan views of the corres onding dr ven ears utilized to obtain the coils illustra ed in Figs. 5 to 8;

Fig. 9 is a perspective view of wire coil: and

F g. 10 is a view of the rotating arbor for produ ing the coil of Fig. 9.

It has been found desirable to provide a sim le and inexpensive machine for manufacturing wire coi s having an desired non-circular sha e. To this end, I prov de a machine which receives wire from a source of supply. such as a reel. and winds the wire around spaced pins on a rotating arbor, the rotation of the winding arbor being intermittent to provide periodic dwells, and the wire being bent and formed around the arbor p ns during the dwells of the arbor. Wire of any suitab e material may thus be coiled into a nona bow-shaped 2 Claims. (Cl. 153- -64) used to form ornamental coils for display and similar uses.

Referring to the drawings, the wire forming apparatus I II is illustrated in Figs. 1 to 4, and include a base II on which a front support plate l2 and a rear support plate I3 are mounted in spaced alignment. A winding arbor I4 is secured to the forward end of a stub shaft I5 which is circular shape, the individual coils being of unithe upper arbor suitably journalled in the front support plate, and is provided with a plurality of spaced winding pins IS, the shaft l5 being rotated by a spindle ll, through the medium of a detachable connector l8, and the spindle I! having a driven gear IQ of special formation keyed thereto.

As illustrated in Fig. 3,-the driven gear l9 has a number of ar'cuate slide portions 20 which are uniformly spaced around its perimeter, and is meshed with a drive gear 2| which has an arouate portion 22 adapted to slide over the arcuate portions 20 of the gear IS, the drive gear 2| being keyed to a drive shaft 23 which is suitably-journalled in the rear support plate, and is in turn driven by a power gear 24 keyed thereto. The drive shaft 23 is direct connected to a plunger shaft 25 by a connector 26, the plunger shaft 25 being suitably journalled in the front support plate and having an off-center pin 21 at its forward end. The off-center pin-moves in a horizontal slot 28 ina slide plate 29 to reciprocate the slide plate, which is housed within a slide support block 30 secured to the forward side of the front support plate. The lower end of the slide plate 29 is provided with a plunger 3|. which has a terminal cam end 32 for periodica ly enga ging the wire and bending it around the upper winding pin l6 as hereinafter described.

A second slide plate 33 which is similarl provided with a plunger 34 and a terminal cam end 35, is slidably mounted in a. guide block 36 which is positioned on the forward side of the front support plate at an angle to the guide block 30, see Fig. 2. and is actuated by a transverse shaft 3! and similar slot and eccentric in connection similar to the actuation of the first slide plate. The transverse shaft 31. see Fig. 4, is journalled in the forward support plate. and is actuated by a spindle 38 through a connection 39. The s indle 38 is iournalled in the rear su port plate and is rotated by a gear 40 keyed thereto and meshing with the power gear 24.

The two slide plates are thus reciprocated in timed relation to the rotation of the winding arbor, and the gears are set so that the two terminal cam ends engage and bend the wire around pin I 6 each time the winding arbor is at a stop or dwell interval, to thus obtain a positive bending forming of the wire into the desired shape. Fig. 2 shows the position of the cam 'ends at a dwell interval, the wire 4! being fed through a suitable passage in a guide member 42, then between the front bearing plate and a guide plate 43 which is mounted on and spaced from the front bearing plate, the wire then passing over the winding pins 18. The wire is preferably fed under a slight tension from a rotation and with respect to each other, thus supply reel (not shown), in order to prevent over-running.

slide piungers move downwardly to bend and W form the wire around the upper pin. As the coil is progressively formed, it is pushed clear of the pins by the finger of an adjustable screw plate 44 and the finished coil passes clear of the machine and to a storage receptacle (not shown), through any suitable, guide, such as for example a tubular or trough shaped channel.

When the winding arbor is in dwell position it is preferred to provide an arresting means for holding the winding arbor spindle in dwell position and against backward rotation; An illustrative construction is shown in Figs. 3 and e, and includes a friction drum 45 which is keyed to the winding arbor spindle and has stop notches 48; a leaf spring 41 is mounted on a suitable transverse bar 48 secured to the front and back plates, the forward end of the spring resiliently resting on the friction drum in positionto engage the stop notches and thus to hold the winding arbor spindle during the dwell period.

It is clear that a fiat coil such as shown at 49 in Fig. 5 is formed when two diametrically opposed arbor pins are used, the driven arbor gear 50 being shown in Fig.- 5a, and having two dwell portions 6i, and the friction drum having two stop notches. The distance between the arbor pins determines the width of the formed coil,

and the slide plate plungers each are provided 56, see Fig. 7a, having four dwell places 58 and an octagonal coil 59, see Fig. 8, is formed by using a drive gear 60 having eight dwell portions 01 as shown in Fig. 8a. The other operating parts such as the number of pins on the winding arbor and the friction drums with the appropriate number of stop notches. are correspondingly changed in the apparatus. If a special shape for the spring coil is desired, such as for example a bow-shape such as designated 62 in Fig. 9 is desired, the winding arbor 83, see Fig. 10, is provided with spacing pins 64 in addition to the two winding pins 65, and the slide plate terminal end cams'are correspondingly shaped so as to accurately form the desired coil shape.

producing unusual coil shapes such as progressive spirals, and that the apparatus may be adapted to shape any type of wire, such as solid, tubular, ribbon, or the like, and may be utilized to form coils of any material which will retain a permanent set after bending and forming, such as lucite and other non-metallic substances, without departing from the spirit and the scope of the invention as defined in the appended claims.

I claim:

1. In a coil forming apparatus, a rotatable arbor having spaced wire guide pins extending therefrom, means for feeding a wire to wind over said pins, means for rotating the arbor, and for periodically stopping the arbor rotation to provide dwell intervals, reciprocable plunger mechanism having cam ends adapted to move into engagement with the wire at one pin and to bend the wire about said one pin, and means for reciprocating the plunger mechanism in timed relation to the arbor rotation to contact the cam ends with the wire and produce the wire bending during the dwell intervals.

2. In a coil forming apparatus, a rotatable arbor having spaced wire guide pins extending therefrom, means for feeding a wire to wind over said pins, means for rotating the arbor, and for periodically stopping the arbor rotation to provide dwell intervals, reciprocable plunger mechanism having'cam ends adapted to move into engagement with the wire at one pin and to bend the wire about said one pin, and means for reciprocating the plunger mechanism in timed relation to the arbor rotation to contact the cam ends with the wire and produce the wire bending during the dwell intervals, said reciprocable plunger mechanism including two plungers angularly positioned to engage the wire at each side of said one pin.

ARMAND J. GARREAU.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 426,386 Kelly Apr. 22, 1890 1,585,905 Madden at al. May 25, 1926 1,715,046 Rogan. May 28, 1929 1,807,892 Brindle June 2, 1931 1,896,670 Gars't Feb. 7, 1933 2,205,171 Kile et a1. June ,18, 1940 FOREIGN PATENTS Number Country Date 189,732 Switzerland Aug. 16, 1937