US2082453A

US2082453A - Electrical connecter

Info

Publication number: US2082453A
Application number: US756384A
Authority: US
Inventors: Howard C Kissel
Original assignee: Individual
Current assignee: Individual
Priority date: 1934-12-07
Filing date: 1934-12-07
Publication date: 1937-06-01
Anticipated expiration: 1954-06-01

Description

June 1, 1937. H. c. KISSEL 2,032,453

' ELECTRICAL CQNNECTER Filed Dec. '7, 1934 2 Sheets-Sheet 1 H- E- Kfs 5 El- June 1, 1937-.

' H. c. KISSEL;

I ELECTRICAL CONNECTER Filed mm. 7,. 1954 2 "Sheets-Sheet 2 Patented June 1, 1937 UNITED STATES- PATENT OFFICE -This'invention appertains to electrical connecters, and more particularly to a novel outlet socket. or receptacle, and plug therefor.

With the use of the customary pronged plug;

considerable diillculty is experienced in properly alining the prongs with the socket recesses for making the desired connection. This is particularly true in the night time or where the socket is located in the baseboard at an inconvenient point (such as behind articles of furniture).

Therefore, one of the salient objects of my invention is to provide an outlet socket and plug which can be quickly and conveniently coupled together and make the desired connection without necessitating the careful alining of conductor prongs and recesses.

Another object of my inventionis the provision of an outlet socket, or receptacle, having an enlarged opening and av wide flaring mouth, or'

entrance throat, leading to said opening, and a plug having a tapered inner endfor fitting in said opening and guided therein by the throat,

having novel contacts for engagement with novelly arranged contacts in the socket.

Another important object of my invention is the provision of an outlet socket, or receptacle, having an enlarged opening with bayonet slots formed in the side walls thereof, and a plug for fitting in the opening having lugs for reception.

in the bayonet slots, .the lugs forming contacts for engagement with conductor members diss.

posed in the slots 'for forming one connection, the other connection being made/by centrally located contacts carried respectively by the plug and socket,.the provision of the bayonet slots,

and lugs preventing the accidental pulling apart of the plug and socket.

A further object of my invention is to provide I novel means for arranging the contacts in the socket, or receptacle, whereby the accidental receiving of shocks is prevented, even though a person should inadvertently insert his finger in the opening of the socket. v

Afurther object of my invention is to provide novel means for forming the plug itself,

whereby a convenient grip can be obtained there-- on for facilitating the insertion and removal thereof from the socket.

A further object of my invention is the provision of novel means for leading the cord into the plug and for connecting the conductor wires thereof to the contacts carried by the plug.

A still further object of my invention is to provide a quick coupling plug and socket of the upon the market at a reasonable cost.

With these and other objects in view, the invention consists in the novel construction, arrangement andformation of parts, as 'will be hereinafter more specifically described, claimed and illustrated in the accompanying drawings, in which drawingsz- Figure 1 is a longitudinal section through my improved plug and socket, showing the same connected together, the socket being of the lamp base type. j

Figure 2 is a side elevation of the improved p us.

Figure 3- is a central vertical section through the improved socket, the view being taken at right angles to Figure 1.

Figure 4 is a fragmentary side elevation of the base of the plug, looking at right angles from Figure 2 and illustrating the formation of the connecter lugs carried thereby.

Figure 5 is a top plan view of my novel socket, showing a part of the plug indotted lines.

Figure 6 is a top plan view of a-socket of the flush baseboard type embodying my improvements.

Figure 7 is a bottom plan view of the socket shown in Figure 6. v

Referring to the drawings in detail, wherein similar reference characters designate correspending parts throughout the several views, the letter 8 generally indicates my improved socket, and the letter P the novel plug used in connection therewith.

The socket 8 comprises a' porcelain or other insulating body l0 having an axially disposed 4o cavity, or opening II. This cavity, or opening.

ll terminates short of the inner end of the socket and opens out through the outer endcf the socket. If preferred, the socket can be surrounded at its outer end by an annular flange It for facilitatingthe gripping of the socket by the operator. Embedded in the inner wall of the body in at the axial center thereof is the central contact ll, and it is to be noted that this contact is exposed both interiorly and exteriorly of the socket.

In. accordance with my invention, the outer end of the opening Ii is beveled. or curved, to provide the wide flaring entrance mouth, or throat, it, which facilitates thelguiding of the N undue effort on sitely extending arcuate grooves l1. Either one or both of the arcuate grooves l1 can be provided'with Ushaped conductor strips i3, and

these strips are preferably tapered and inclined I toward one end,- for a purpose which will be laterset forth. It will be noted that the inner faces of the conductor strips are covered by insulation to prevent shocks from being inadvertently received.

As the socket S is of the lamp base type, the outer face thereof has rigidly secured thereto the threaded metallic conductor shell IS. A drop of solder or the like 20 is employed for electrically. and rigidly connecting the shell with the U-shaped conductor strip l8.

- From the description so far, it can be seen that the socket is provided with'a centrally disposed conductor, or button, l3 and a side conductor IS.

The improved plug P is also formed from porcelain or other insulating material, and includes a main body 2i having formed thereon the forwardly extending, axially disposed'plug projection proper 22. The diameter of the plug projection 22 is the same as, or slightly less than the interior diameter of the socket S, and the plug projection is adapted to flt within the opening ll.

As is clearly shown in Figure 1 of the drawings, the insertion of'the plug projection in the opening is considerably facilitated byv the flaring guide mouth l4. If desired, the plug P at the juncture of the body 2i and the plug projection 22 can be shaped, as at 23, to fit in said flaring mouth when the plug and socket are coupled, so as to completely close the opening.

Extending diametrically through the plug projection 22 at a point intermediate its ends is a conductor rod 24. Theterminals of the conductor rod. 24 are extended a material distance beyond the opposite sides of the plug projection, so as to form connecter lugs 25.

By referring to Figure 4 of the drawings, it

will be noted that theinner, or rear, face of the lugs are beveled, as' at 26, so as to form a substantially wedge-shaped structure for reception in the tapered arcuate ways i1 formed in the socket.

Molded in the bottom. of the plug P are conductor strips 21 and23. The forward end of the conductor strip 21 is electrically connected with the conductor rod 24, as is clearly shown in Figure 1 of the drawings. The forward end of the conductor strip 23 is extended exterlorly of the plug projection'22 at its axial center, as indicated by the reference character 23, for engagement with the central contact, or button, l3.

The inner ends of the conductor strips Hand 23 are extended laterally to provide attaching feet 33 and 3i respectively, and the plug body is formed with openings 32 to permit access to be had to said feet. Binding screws 33 are threaded through the feet and auto the plug body to permit the attaching of conductor wires .70

The inner end of the plug .body is formed with a transversely extending hand grip 34 which can have its opposite sides corrugated or otherwise treated, as at 35, to facilitate the gripp thereof. This hand grip 34 is provided with a cenaosaiss tral bore 33, through which is adapted tobe inserted the electric cord (not shown) leadin from an electric iron or other electrical appliance. This central bore 33 has communicating therewith diverging bores 31 which open out through,

In use of my novel plug and socket, the plug P is gripped by the handle 34, and the plug proiection 22 is inserted in the socket. The plug projection will be guided in place by the flaring mouth, and the. terminals of the conductor rod 24 will strike this mouth and the plug can be rotated until the terminals of the conductor rod ride into the longitudinal grooves IS of the bayonet slots.

The plug isnow pushed all the wavinto the socket and is again turned, so as to move the connecter lugs, or terminals, of the conductor rod 24 into the arcuate ways I! of the bayonet slots. Obviously, the conductor strip 23 electrically contacts with the button l3, and the conductor strip 20 through the medium of the conductor rod 24 electrically connects with the shell l3 through the conductor strip I3 andthe solder 23.

Due to the inclined shape of the. ways and the U-shaped conductor strips i3, and the beveled faces of the lugs 23, a wedging action will be had, which will effectively couple the plug and socket together. This wedging action or inclined plane principle will take up any play caused by wear, and will always keep the contacts tight and prevent sparking and heating. This type of coupling positively prevents the accidental uncoupling of the plug and socket.

Obviously, the plug can be quickly and easily removed by grasping the handle 34 and rotating the same in a reverse direction until the terminals of the conductor rod again aline with the longitudinal grooves l3 of the bayonet slots, at which time the outward pull on the plug will uncouple the plug from the socket.

In Figures 6, '7, and 8, I have illustrated a flush type of receptacle, or socket, and, as shown,

or guide throat, 43. The side walls of the opening are provided with the bayonet slots 44, and anchored in one or both of the curved portions of the slots is the U-shaped conductor 45.

Attached to the inner face of the body is a conductor plate 43 which is adapted to be engaged by the central contact of the plug. As shown, a. binding screw 41 is carried by the plate 43 to per-, mit one of the house line wires to be connected therewith. vl'isimilar binding screw 43 is provided for the other house line wire, and this screw is carrled by the conductor strip 43, which. can

be molded in the socket, and which is'electrically connected'with u shaped conductor strip". 76

pvent the contacting of the line wires when the same are secured to the binding screws.

This socket is very similar to the socket shown in Figures 1, 3, and 5, and the plug? is inserted therein in the same manner.

With my type of plug and socket, no shock can be received by inserting receptacle, or socket, even when standing on a peri'ect ground, due to the fact that the neutral wire goes to the central terminal, and live wire to the contact in the arcuate way ill, and the iace of this contact is covered by insulating material.

Obviously, the principles of my invention apply to all types of receptacles, or sockets, with which the plug can be used, and the sockets, or receptacles, can be made in multiple without departing fronrthe invention.

Particular attention is invited to the fact that there are no moving parts in either the plug or socket with the exception of the terminal screws; and that the connection between the plug and the socket, or receptacle, is not dependent upon springs and the like. a

The entire assembly of both the plug and socket, or receptacle, are of one piece molded, and are not various stampings pressed together and inserted in insulated cores,

Stress is again laid on the novel means employed for uniting the socket, or receptacle, and the plug together. The pitch of the inclined ways ii and the tapered terminals of the conductor bar 26 form, substantially, a, screw thread connection which holds the parts tight and takes up anyplay due to wear and the like. as the plug is inserted and turned, the same is fed inwardly, insuring proper contact between the axial conductors i8 and 29.

From the foregoing description, it can be seen that I have provided an exceptionally simple and a finger or tool in the Obviously,

durable form of plug and socket, which will per- I mit the convenient and quick coupling of these members together. x v

Changes in details may be made without departing from the spirit or the scopeof my invention, but what I claim as new is:

1. In a separable electrical connectcr, a socket. or receptacle, including a body of insulation having a central opening therein,- a central contact for the body,the.opposite sides of the wall of the opening being provided with bayonet slots, a threaded metallic shell fitted on the outer face of the body, a lirshaped conductor strip embedded in one of the bayonet slots and having electrical connection with the shell, a plug for movement into and out of the opening at the will of the operator, an axially disposed contact on the plug for engagement with the axial contact of the body, and a conductor bar extending diametrically through the plug having its terminals protruding beyond the plug'for detachable reception in the bayonet slots and in electrical engagement with the U-shaped conductor strip.

2. In an electrical connector, a socket, 'or receptacle, including a body of insulation having a central opening therein, an axial contact for the body, the opposite sides of the wall of the opening being provided with bayonet slots, a threaded metallic shell fitted on the outer face ofthe body, a U-shaped conductor strip embedded in one of the bayonet slots and having electrical connection with the shell, a plug for movement into'the opening, an axially disposed contact on the plug for engagement with the axial contact of the body, and a conductor bar extending diametrically through the plug having its terminals protruding beyond the plug for reception in the bayonet slots and in electrical eneasement with the U-shaped conductor strip, the U-shaped conductor strip and the terminals of the conductor bar being of a wedge shape.

' HOWARD C. 15c: 88%.