US2526277A - Compressible insulated connector - Google Patents

Description

Patented Oct. 17, 1950 COMPRESSIBLE INSULATED CONNECTOR Julian-Rogof, New Rochelle, N. Y., assignor .to

Burndy Engineering Company, Inc., a

tion of New York Corporaoriginai application June 6,1944, serial No.

Divided and this application August 21, 1947, Serial No. 769,934

' My invention relates to insulated wire connectors, and the principal object of my invention is to provide an insulation-covered electrical connector whereby a connection can be established by simply inserting the wires into the covered connector and compressing the connector through the insulation cover to establish an efficient mechanical and electrical connection.

This application is a division of Ser. No. 538,991

filed June 6, 1944 issuedas Patent No. 2,429,585 October 21, 1947.

I accomplish these and other objects and obtain my new results as will be apparent from the device described in the following specification, particularly pointed out in the claim, and illustrated in the accompanying drawing invwhich:

Fig. l is a side elevation of one form of my insulation covered connector with wires inserted therein and before crimping.

Fig. 2 is a top view thereof, partially in section. 4

Fig. 3 is an end view after crimping.

Fig. 4 is the top view thereof.

Fig. 5 is a longitudinal cross-sectional view of a modified form before indentation.

Fig.l 6 is a similar view'after indentation.

Fig. 7 is the top view thereof.

Fig. 8 is a longitudinal cross-sectional view of a further modiiied form employing a spring type of connector.

Fig. 9 is a cross-sectional view of the same, taken through 9-9 of Fig. 8.

Fig. 10 is a siinilar'view illustrating the conductors positioned therein.

Referring more particularly to Figs. 1 and 2 of the drawing, reference numeral I0 designates 1 Claim. (Cl. 174-87) l Depending on the type of insulation used, other types of well-known bonding methods may be employedinvolving heat. A shoulder I5 may also be moulded inside the cover or moulded about the sleeve to prevent removal thereof, as shownin Figs. 1 and'B.

The insulation itself may be of any well-known type which can withstand a compression, Aindentation, or crimping without cracking or cutting the insulation, such as rubber, a copolymer vof vinyl chloride, vinyl acetate, etc. In some cases the insulating material may be baked on the sleeve.

Where an end to end connection is desired, the cover may have the skirted section on both ends of the open sleeve, as shown in Figs. 5, 6, and 7. Here the sleeve is of suflicient length to allow the exposed wires '2| and 22 to be inserted into the ends of the sleeve. The body of the insulation cover 23' extends over the sleeve 20 and overlaps the wire ends 2| and 22, to form skirts 24 and 25 where the wire insulation 26 and 21 is cut to expose the wires.

As shown in Fig. 6, an indenting tool provided with jaws 28 and '29 compresses the sleeve 20 Y to the wire ends 2| and 22, through the cover 23,

a. tubular copper sleeve which may be force-fitted Y ycompressing the wall thereof, and forcing vthe sleeve to be securely indented to the wires. This is shown in Figs. 3 and 4.

' Various methods of securing the insulating cover to the metal sleeve may be employed. As has been indicated, one method is to force ilt the sleeve into the cover. Another method is to cement the two together by a suitable adhesive.

The cover is proforming indentations 30 and 3l. The sleeve should be made of thick-walled malleable stock to withstand the indenting action. f

In Figs. 8, 9, and 10,1 have shown a modified form of connector wherein a removable type of spring-iiexed gripping means is employed for securing the wires, operated by compressing the flexible walls vof the insulating cover, by a compressiontool. v v

Thev gripping means comprises a sheetmetal clip 35,y of phosphor-bronze material capable of developing a high degree of resiliency for securing the end of the wires. The two ends of the strip are notched to form jaws 36 and 31 and which will interlock with wires 38 and retain them by spring pressure. The clip 35 is inserted into a moulded cup-shaped cover 40, having a hollow portion 4I for containing the clip, a peripheral shoulder 42, for securing it therein, with an extending skirt 43 for covering the exposed entering wires 38.

The'fiexible cover 40 is compressed at points 44, which causes the clip 35 to open to permit the wires 38 kto be inserted into the hollow portion 4I and between jaws 36 and 31. Upon releasing the pressure on the cover, the jaws will grip the wires, retaining them.

The cover may be opened at both ends to permit end toend connection as shown in Fig. 5.

metal connector to a conductor inserted therein,

thereby permitting the insulated metal connectors to be used for establishing electrical connection without the necessity of rst removing the insulation from the connector before securing the wire to the connector and thereafter replacing the insulation.

I have thus described my invention, but I desire it understood that it is not confined to the particular forms or uses shown and described, the same being merely illustrative, and that the invention may be carried out in other Ways Without departing from the spirit of my invention, and, therefore, I claim broadly the right to employ all equivalent instrumentalities coming within the scope of the appended claims, and by means of which, objects of my invention are attained and new results accomplished, as it is obvious that the particular embodiments herein shown and described are only some of the many that can be employed to attain these objects and 2 accomplish these results.

I claim:

An electrical connector for joining the bared wire'ends of a plurality of insulated electrical conductors, comprising an insulating cover made of exible material, a sleeve mounted within the cover and adapted to receive the wire ends, said sleeve having Walls made of resilient material to enable the walls to be compressed toward each other, gripping means contained within said inner sleeve and integral therewith and having oppositely acting engaging arms extending transversely of said sleeve to engage said wire ends, one of said engaging arms being positioned between the other engaging arm and the Wall to which said other engaging arm is secured to enable the arms to be separated to form an opening to receive the wire ends there between when the walls are compressed, and to resiliently grip the Wire ends when the pressure on the Walls is released.

JULIAN ROGOFF.

REFERENCES CITED The following references are of record in the l'e ofthis patent:

UNITED STATES PATENTS Number Name Date 845,268 Schade Feb. 26, 1907 1,622,632 Fahnestock Mar. 29, 1927 1,965,151 Mueller July 3, 1934 2,122,252 Hayes June 28, 1938

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