US1613647A - Electric-cord connecter - Google Patents

Description

Jan. 11 1927. 1,613,647v

` G. DAVIES ET AL ELECTRIC CORD CONNECTER- Filed Sept. 14, 1925 All,

ll-NewYorm k 9mm www.

Patented Jan. l1, 1927.

A UNITED STATES I PATENTl oFF ".7 'I 1,613,647 Ica.

GILBERT DAVIES' AND ALFRED GHARLES MIRES. 0F MONTREAL, QEBEC, CANADA. I

ELECTRIC-conn CONNECTER.

-Application led September 14, 1925. Serial No. 56,280.

The invention relates to an electric cord connecter plug, as described in the present specification and illustrated in the" accompanying drawings that form part of the same.

The invention consists essentially of the novel features .of construct-ion pointed out vbroadly and specifically in the claims for novelty following a description in detail of an acceptable form of the invention.

The objects of the invention are to facilitate the handling of lamps, tools,` utensils and other articles energized through the flowing of electric current in wires enclosed in insulation and commonly termed electric cords; to avoid the twisting of said cords and the ultimate dislocation of the wires and often the short circuiting of the connections; to eliminate the troubles incident to the making ot' connections by inexperienced persons particularly in households; to furnish a plug of reasonable dimensions and applicable to any kind of casing already preparedin the tool or utensil or light or separated therefrom; to supply this plug ata price'notmateriall7 advanced as compared with conventiona plugs; and generally to provide an eiicient serviceable and durable rotary plug. l

In the drawings Figure 1 is a side elevation of the plug, as it appears in its individual casing.

Figure 2 is a longitudinal sectional view of the invention as illustrated in Figure 1.

Figure 3 is a perspective detail of one half of the shell.

Figure 4 is -a perspective detail of the other half of the shell.

Figure 5 is a perspective detail of the rotary `contact core.

Like numerals of reference indicate corresponding parts in the various ligures. Referring to the drawings, the fibre core 10 is formed with the central bore 11 arid the reduced threaded ends 12 and 13 and the oppositely reduced sides14 and 15 of the body 16, the side 14 sloping inwardly from one `end 17 of the body 16 to the other end 18 and the side 15 sloping from the end 18 to the end 17 said sloping sides at the end hav ingthe recesses 19 and 20.

The rotary ring contacts 21 and 22 are respectiveljv screwed on to the ends 12 and 13 and abut the ends 17 and 18 of the body 16 respectively forming open spaces on the contacts at the recesses 19 and 20 for the screw holes 23 and 24 adapted to receive the screw binding ' posts 25 and 26.

The wires 27 and 28 from the cords are attached to the posts 25 andv 26 respectively and of these Wires the wire 27 extends into the bore 11 and passes through the oriice 29 into the recess 19 and so around the post 25 and the wire 28' extends into the bore 11 and passes through the orifice 30 into the recess 2() and so on to the post 26, thus yproviding a constant connection from the electric cord to the rotary contacts respectively, the other end of the cord being connected to the light, utensil or tool. Y.

The stationary contacts 31 and 32 are rigidly secured to the shells 33 and 34 at opposite ends respectively and riveted and connected to the inwardly offset connecter bars 35 and 36' countersunk in the fibre shells 33 and 34 and flush with the periphery thereof.

The contacts 3l and 32 form a lining piece atone end of each of the shells 33 and 34 and are flangedto form the stops 37 and 38. f

The clips 39 and 40 are also riveted to the contacts 31 and 32 and in use embrace the rotary contacts 21 and 22, the latter turning freely in said contacts 31 and 32.

The shells 33 and 34 are inserted in the casing 41, which has at one end a permanent head 42 with the bar slots 43 and 44 through which the connecter bars35 and 36 pro'ject, and at the other end a screw cap 45 with the central cord hole 46 through which the electric cordsextend to the translating device.

The translating device, light, utensil, tool orv other article, may form the casing for the shells 33 and 34 quite readily by having a correspondin recess.

In the operat1on of thisinvention the connecters are inserted in the contacts of the wall or other connection cr tothe .contacts of the translating device and-this brings the shell parts Vin permanent association during the connection. In this position the rotarythe binding posts connecting them to the wires of the cord jolning the main working 4circuit to the translating device, the said cord may turn freely. without affecting the same as'the rotary contacts turn with every movement,

What we claim is Y 1. In an electric cord connecter plug, a rotor of insulating material having reduced reduced ends and having binding posts therein, a split shell and fixed contacts secured thereto having flanges forming stops at opposite ends of the shell pieces for said ring contacts respectively and bearings for the latter and clip extensions embracing the said ring contacts, and connecters riveted to said ring contacts through said shell pieces. c

2.' In an electric cord connecter plug, a rotor of fibre having reduced threaded ends and reduced sloping sides from either end respectively and recesses at the ends of said slopes communicating vwith a central bore ring contacts secured 011 said reduced ends and having binding posts therein and a split shell having connecters extending therefrom I and contacts rigidlyl secured with said connecters and forming bearings and stops for -said rotor and ring contacts. ends and sides, ring contacts secured on said 3. In an electric cord connecter plug, a

rotor formed of fibre and ring contacts and having a central bore and binding posts recessed in the body and screwed in the ring contacts,y a fibre shell in two parts, one part having a lining contact at one end flanged and secured to said part with a retaining clip and a connecter bar offset at the end beyond the shell part and the other part having a similar lining contact at the other end likewise secured to a retaining clip and `offset connecter and a casing containing and holding said shell parts together.

Signed at Montreal, Canada, this 27th day of August 1925. n

GILBERT DAVIES. v ALFRED CHARLES MIRES.

Images