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Publication numberUS870490 A
Publication typeGrant
Publication dateNov 5, 1907
Filing dateJan 24, 1906
Priority dateJan 24, 1906
Publication numberUS 870490 A, US 870490A, US-A-870490, US870490 A, US870490A
InventorsStephen Frontis Burbank
Original AssigneeStephen Frontis Burbank
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Combined electric connector and switch.
US 870490 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

No. 870,490. PATENTBD NOV. 5, 1907.



E 1%" t a I &y-744 rzw nnrrnn s ra'rns Parana errone- STEPHI JN FRON'llS BURBANK, OF WILMINGTON, NORTH CAROLINA.


Specification of Letters Patent. A li tion fil d January 24. 1906. Serial No. 297.628.

'No. 870,490. Patented Nov. 5,1907.

To all whom it may concern:

Be it known that I, STEPHEN Fnonrrs BURBANK, a

I! end and an annular groove 15 in its other end, for the resident of Wilmington, in the county of New Hanover I reception of the annular rib 9 on the annular conductor 7. A sleeve 16 embraces the pipe sections. One end of this sleeve may be screwed to the pipe section 1, and the other pipe section may be moved freely Within said sleeve.

With the construction and arrangement of parts as above described, it will. be readily seen that when the blocks within the two pipe sections are brought toand State of North Carolina, have invented certain new and useful Improvements in Combined Electric 0onnectors and Switches; and I. do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My inventionrelates to improved electrical connecting devices, and more particularly to a combined revoluble contact and switch device',-one object of the invention being .to so construct a combined device of the character specified, that one part can be turned 360 without breaking the circuit, and so that the circuit can be made or broken'by moving one part endwise with respect to the other part atany point within the 360 through which each part may be turned.

A further object is to produce a combined revoluble contact device and switch which .shall .be simple in construction; aflord extensive contacting surfaces, and which shall be effectual, in all respects, in the performance of its functions. I

With these objects in view, the invention consists in certain novel features of construction and combinations parts as hereinafter set forth and will enter the socket and groove in the conductors in the other block and the'electricbircuit in which said conductors are included, will be closed,-the extensive bearings between the conductors, afforded by the and groove construction of the conductors, insuringefiicient electrical connection between the conductors even when there is slight longitudinal movement of the respective pairs of conductors relatively to each other. In order, however, to preductors relatively to the other set, screws 17 may be passed through the sleeve 16 andmade to enter elongated slots in the pipe section2. -When these screws are removed, the blocks containing the conductors, can be moved manually away from each other to open or close the circuit and thus the device may be utilized as a switch. One block can be turned 360 relatively to v the other, when the screws. 17 have been removed, without breaking the circuit, and they may be brought together to close the circuit or cuit, when in any tatcd.

While I have describedmy improvements as applied to gun carriages, it is evident that they may be used with equal'advantage in other apparatus or devices Wherc rotary contacts or connecting desirable.

Having fully described my invention what I claim as new and desire to secure by Letters Patent is:

1. A device of the character described, comprising two sets of insulated conductors,

ing, sockets receiving projecting and arrangements of pointed out in the claims.

In the accompanying drawings; Figure 1 is a longitudinal sectional view illustrating my improvements: Fig. 2 is a transverse sectional view on the line x-w of Fig. l.

My improvements are intended for use in connection with any electrical device where a combined revoluble contact and switch device is desirable,for instance, in supplying electric current to gun carriages.

1, 2 represent tubes or pipe sections which may be connected in any suitable manner to'two parts of a gun carriage so mounted that one part has revoluble movement with respect to the other part, and one of said tubes or pipe sections is intended to have an endwise movement with respect to the other part. Within one end of the pipe section 1, a composite block 2 is screwed. This block comprises a central core 3 of tively to each other throu h 360 decree provided] at one end with binding post 4 and at A device of the cliaritcter dcsdribeii comprisin two lts Other'end wlth tenon 5 which projects bqyond the Set s of insulated conductors, one condu ctor of eac h set end of the pipe section 1.

A sleeve 6 of insulating material surrounds the core 3 and encircling said insulating sleeve, is an annular conductorj. 'lhe annular conductor 7 is provicl ed at one end with a binding post 8 and at its other end with an annular rib 9. A composite block 10 is screwed into the end of the pipe section of two blocks, each comprising a central conducting I ion 2 and comprises a central core ll having a socket in I w I no end to receive the who 5 on the 3 and a p ing material between said core and annular conductor, said ing post 12 at the othcrcnd. An insulating sleeve 13 surrounds the core 11, and encircling the sleeve 11 is an annular conductor 14 having a binding post 14 at one i position to which they may be rotudinul movement relative to each other.

vent any longitudinal movement of one set of conseparated to open the ci'rv devices are 1 3. In a device of the character described, the combinathroughout any revoluble movement of one block relatively groove in one end, an annular rib on the annular conductor to the other. of the other block to enter said annular groove, and the 4. In a device of the character des ribed, the mbi centralcore having a tenon' to enter the socket in the cention of two pipe sections and a. sleeve embracing said pipe tl'fll C of the other b O 5 sections and secured to one of them, of a connector block In testimony whereof, I have Signed this spccificilticll in each pipe section, each connector block comprising a in the-Presence of two Subscribing Witnesses. central conducting core and an annular conductor en- STEPHEN FRONTIS BURBANK. circling the core and insulated therefrom and from the Witnessesg pipe section, the core of one block having a socket and the PERCY CANADAY,

l 0 annular conductor of the same block having an annular LOUIS BELDEN.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2422961 *Mar 24, 1943Jun 24, 1947Gen ElectricRotating joint for concentric cables
US2487079 *Apr 11, 1946Nov 8, 1949 Electric circuit controller
US2570784 *Jul 23, 1948Oct 9, 1951Ferguson Kenneth FAdjustable electric plug
US3771096 *Apr 3, 1969Nov 6, 1973Walter VVideo and audio passing and lane changing signaling system for vehicles
Cooperative ClassificationH01R39/64