US2097370A - Electrical fixture - Google Patents

Description

Oct. 26, 1937. IH, Tl HAYAsHl I I 2,097,370

lELECTRICIUJ FIXTURE i Original Filed April 6, 1935 INVNTOR HARRY 77 HHYHSH.

ATTORNEYS.

Patented Oct. 26., 1937 ,UNITED STATES aLEcTmcAL mmsnmy '1'. Hayashi, Honolulu, Territory of Hawaii v.application Apta s, 1935, 'serial No. 15,113

- Renewed March 24, v193'! 2 Claims-,r (01m-343) I This invention relates to improvements in electrical iixtures, and has particular reference to an electric plug. t

The principal object of the invention is to produce a plug wherein the cap portion of the,

plug may be rotated about in the plug and further the cap may be .inserted in the plug in anydesired position, and will at all times form a contact.

A further object is to produce a' device which is economical to manufacture, neat in appearance and one whichmay be used as a substitute for the standard form of plug. y I

Other objects and advantages will be apparent during the course of the following description.

In the accompanying drawing forming a part of this specification and in which like numerals are employed to designate like parts through-- out the same, l f

Fig. 1 is a vrtical section of my device showing the cap and the plug separated, 1

Fig..2 isa side elevation of my plug showing the cap and plug separated,-

Fig. 3 is a bottom plan view of the cap Vshown in Fig. 1, and

Fig. 4 is a cross sectional view takenbn the line I-B of Fig. 1 and on an enlarged scale.

'Ihe ordinary plug consists of a base portion and a cap portion, the base portion usuallyhaving two parallel openings therein, into which the prongs of. the cap ilt. It is often diilicult to cause the prongs of the cap to enter the open.- ings in-the plug if the-position of the plug cannot be4 seen. Applicant has, therefore, devised a plug and cap which will produce an electrical contact, no matter what position the cap en I ters the plug. A

This is accomplished by providing a plug consisting of` a base portion 5 having the customary metallic threaded conductor 6 secured thereto, and a base contact 1.' A bore 8 extends through the base 5. Positioned within the bore 8 is a contact ring 9 which is electrically connectedto the threaded conductor 6. A similar ring II is electrically connected to the contact 1. ril'he cap consists of a. top portion I2 and a grooved central extension lI3. whichis preferably reinforced as shown /at I4. Contacts IG and I'l are. secured to the top I2 and are electrically connected to .the wires'of the ordinary conductor cord I8.

1t wm be noted that the contacts I0 and I1 lie in'the grooved sections of the extension I3 and are each provided with a curved spring section extending slightly beyond the face of the said extension 'and that the contact I6 is longer than the contact I'I. t Consequently, whenever the cap is placed in the plug the contact I6 will engage the rin'g II and the contact l1 will engage the ring 9. With this arrangement it is possible to place the cap in the plug in any desired position and always secure an electrical circuit. The cap will be heldin the plug through the friction of th curved spring portions of the contacts I6 and I1 with the interior of the bore 8.

It is to be understood that the form of my in'- ventiofn herewith shown and described is to be taken as a preferred example of the same and that various changes' relative to the material, size, shape and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims. Having thus described my invention, I claim:- 1. In a plug of the character described, coml prising a base having a bottom contact and a threaded side contact,said base having a bore formedtherein, a pair of spaced rings mounted flush in the bore and respectively electrically `connected to the bottom and to the threaded contacts, and a cap having a projection capable of extending into the bore, said cap beinggrooved and carrying spring contacts arranged in said grooves, and being engageable with said spaced rings. l

2.- In a plug'of the character described, comprising a base having a bottom contact and a tacts,- a cap adapted to engage said base, said HARRY-"1'. HAYAsHI.

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