USRE13605E - Consin - Google Patents

Description

R. H. WELLES.

ELECTRICAL CONNECTOR.

APPLICATION FILED APR.19, 1913.

Reissued Aug. 12, 1913.

1 To all whomsz't may-concern."

1 UNITED STATES PATENT OFFICE.

RICHARD'H. WELITES, OF KENOSHA, 'WISCdNSIN, ASSIGNOB- T THE BADGER BRASS MANUFACTURING- COMPANY, OF KENOSHA, WISCONSIN, A CORFORATION' OF WIS- CONSIN.

ELECTRICAL CONNECTOR.

Specification of Reissued Letters Patent. Reissued Aug. 12, 1913.

Original No. 1,05 4,809, dated March 4,1913, Serial No. 632,768. pplication for reissue filed April 19,

. 1913. Serial No. 762,421.

Be itknown that LRrcmmnH. WELLES, a citizen of the United Stat-es, residing in the city of-Kenosha, in the county of Kenticularly when such terminals must be conosha and State of Wisconsin, have invented certain new and useful Improvements in Electrical Connectors, of which the followingis a specification.

This invention relates toimprovements in electrical connectors, and in the present instance is shown as applied to an electrically lighted headlight.

' Among the salient objects tion are to provide improved means for preventing short-circuiting of contact terminals or the ends of electrical conductors, parnected to a' relatively small socket holder the same time keeps them efi'ectively insulated from each other; to provide in such a construction a secondary insulating bridge piece. which prevents accidental short-circuiting between the terminals when the latter are disconnected from the fixture; to prbvide in a construction of the above character a cap or fitting which locks the terminals-to the connector and also the connector to the lamp socket 0i fixture; to provide a in described and more particularlypointed' construction which is adapted for use with various kinds of electric sockets or other electric connections; to provide a device characterized by its simplicity and economy of construction and which can be readily connected to or disconnected from the contact terminals; and in general to provide is a detail perspective view with parts shown .in fragmentary section of one form of lamp fixture, the lamp proper being shown dis: connected, Fig. 3 is a vertical sectional view showing the conn ctor secured to the lamp fixture, Fig; 4: is a detail perspective view showing the electrical connector-and lockof the 'inventhe connector to p ug.

ing cap, and Fig. 5 is a detail perspective view of the connector proper.

Heretofore difficulty has been experienced in preventing sh-ort-circuiting between contact terminals when the latter are connected to small fixtures. For example, in electrical automobile lamps the electric light fixtures are relatively small, while the conductors themselves arerelativelylarge, and considerable difiiculty has been experienced in properly applying, in the small space allowed, the terminals of the supply c011- ductors for the lamps in such way as to prevent short-circuiting thereof. Connectors have been used comprising usually a rubber plug with contact pins extending therethrough. In soldering the supply wires to such pins the rubber plug is usually injured.

The present invention not only eflectively prevents any possibility ofshort-circuiting, Y

but also providesmeans whereby the terminals may be readil and quickly secured to Referring to the drawings, 1 designates an 1 electric headlight, at the lower end of which is fixed a bushing 2 through which extends the lamp fixture 3 which may be locked in position by a set screw 4.

This fixture 3 comprises a cylindrical sleeve or shell 5,'centrally within which is fixed a block 6 of in sulating material having two vertical bores 7 and 8 through which extendelectricalconnecting members 9 and 10. Asv shown, each of these members comprises a sleeve 11 and contact pins 12 and 13 which are slidable through the heads of the sleeve and are pressed outwardly by a compression spring 14. The upper end of the sleeve 5 receives the base 15 of the lamp, L, and ,the lamp is locked to the sleeve by pins 16 engaging in A tact therewith-by the springs 14.

. Describing snow the electrical connector which-forms the salient feature of my inyenti'on, this connector comprises a cylindrical plug 19 having longitudinal bores 20'- ,and 21 for receiving the metal terminal tips 22 "and 23 "soldered; or otherwise secured to the ends of the supply conductors 24.

The upper end of each terminal tip is of e ed. dia i s te to ea sh u r 25 f r ed into or withdrawn from the plug, and

also to prevent the conductorsimmediately adjacent the pins from being squeezed together to. be thus short-circuited, I provide an extension 28 on the base of the plug which bridges between the'term inal tips, and the semi-cylindricalchannels 29 receiving the conductors rigidly hold the conductors and'thus prevent loosening or disconnection thereof on the terminal pins. Also, to prevent 'short-circuiting between the heads of the screws 27 a short projection 30 on the plug bridges between these screws, so that the screws will not be sh'ort circuited upon engagement of .the plug end with a metallic surface. Member 31 has the sleeve part 32 for receiving the conductor cable, 0 and the flange part 33 which is internally threaded to have threaded engagement with.

the lower end of the lug 19. The plug 19 fits the lower end 0 the fitting sleeve 5 and is locked therein by the engagement of pins 34 with ba onet slots 35 in sleeve 5, and when the plug'is thus locked to the sleeve the screws 27 are held in firm electrical engagement with the contact pins 13 by the force of the springs 14. The flange 33 of the cap frame 31 abuts against the lower;

edgeof the sleeve 5 when'screwed up on the plug, and thus the pins 34. are securely locked in the bayonet slots, the horizontal faces 36 of these slots being slightly concave, as best shown in'Fig. 2, toreceive the pinsand to prevent rotation of the vplug I after. the cap has been screwed against the sleeve 5. y I thus provide connector mechanism which can .be readily applied and secured to electric fixtures and to which supply con- .,ductor terminal pins can be readily applied and secured without any' danger of short-circuiting thereof. b r

I do not of course desire to be limited to the precise construction and arrangement and adaptation shown, as changes and modi fications are, of course, possible which would still come within the scope of the invention,

and I therefore claim the following:

Claims:

1. In. an electrical connector, the combi-' nation of a cylindric bod art of insulating material, a short cyhn ri'cal extension from the base of saidbody part and of less diameter than said body part, a longer cylindrical extension from the head of the body part and of less diameter than. saidbody part, parallel bores extending entirely through said body part and said cylindric extensions, part of the bore within the body part being of less diameter to' formouter and inner shoulders, terminal tips engaging insaid bores within the body part and abutting against the inner shoulders, screws extending into theother end of. said bores and. abutting against the outer shoulders and having threaded engagement with said tips, the outer faces of. said screws bev ing substantially flush with the base of the body part but bridged between by theshort cylindric extension, and terminal conductors.

extending through the bores of said head cylindric extension and said body part and secured in suitable holes in said tips, the

ends of said conductors being bridged be- 1 tween by said head cylindric extension. a

2. In an electrical connector, the combination of a cylindric body part of insulating material, ashort cylindrical extension from the-base of said body part and of less diameter than the body part, a longer cylindrical extension from the head of the body part- -and of less diameter than said body part,

parallel bores extending entirely through said body part and said cylindric extensions, part of the bore within the body part being of less diameter to form outer and inner shoulders, terminal tips engaging insaid bores within the body part and abutting against the inner shoulders, screws extending into the other end of said bores and abutting against the outer shoulders and having threaded engagement with said tips,

the outer faces of said screws being substantially flush with the base of the body part but bridged between by the short cylindric extension, terminal conductors extending through the bores of said head cyli'ndric extension and said body part and secured in conductors being bridged between by said headgcylindric' extension, and a cap having' a cylindric bore for receiving the conductors and internally threaded atone end for engagement with threads on said body art. i

3. In an electrical connector, the cbmbination of a sleeve, a block within said sleeve carrying contact pins, a plug having a body part tor fitting into said sleeve, said sleeve suitable holes in said tips, the ends of said.

having a bayonet slot and said body part having a pin for engaging in said slot, terminal tips within saidbody part for recelving conductor terminals,a cap having an opening for receiving said conductors and having internal threads at one end for engaging with threads on the body part, the

end of the bayonet slot being notched for re-- ceiving the body part pin and said cap abutting against the sleeve end to securely lockthe pin in said slot to thereby securely lock the body part .to said sleeve.

4. In an'electrical connector, the combination with a' cylindrical shell-like casing adapted to receive contact tips and an electrical fixture, of an insulating plug having detachable connection with said casin and provided with a pair of longgg'itudinaly extending bores, a reduced insulating cylin- "drical extension at the outer end of said ,jplug' provided with oppositely disposed grooves, contact screws in the upper end of said bores, a pair of flexible, conductors lyin insaid-bores and grooves bridged by said insulated extension, and means for detachably locking the plug in the casing.

5.- In an electrical connector, the combination "with a casing adapted to receive contact members and an electrical fixture at one end, of" an insulating plug detachably seated in p the other end of said casing and provided with a pair of longitudinally extending hores, an insulating extension on the outer

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