US430846A - Emil f - Google Patents

Description

II. .sin

` Patented June 24, 1890.

UNITED STATES PATENT OFFICE.

EMIL F. GENNER' OF NEV YORK, N. Y.

f si N'sUEATI N e. -J el NT.

SPECIFICATION formingpart of ,Leers Patent No. 430,846, dated une 24, 1890.

Application letl November 23,

889. Serial No. 331,290. (No model.)

To LIZ whom, it may concern.-

Be it known that I, EMIL F. GENNERT, a citizen of the United States of America, and a resident of the city, county, and State of New York, have invented certain new and useful Improvements in Joints and Couplings for Fixtures for Electric Lighting, of which the following is a specification.

My invention appertains to fixtures for gas or electric lighting, and relates more espeeially to the joint connecting a fixture to the nipple of a ceiling supply-pipe or support, my object being to provide a joint which will be free to move in any direction to a suflicient extent to allow the fixture to he swung in and to maintain a vertical position, even though the nipple should project .at considerable inclination from the vertical, or inthe case where said nipple changes direction of projection, as is the case with nipples in the ceilings of the cabins of ships or steamboats, and to provide such a movable joint with means for preventing it from swiveling and with proper insulation, so as to make it suitable for use on combined gas andv electriclight fixtures.

My invention consists in the construction, arrangement, and combination of parts whereby I accomplish the aforesaid objects, as is hereinafter described, and particularized in the claims.

In the accompanying drawings, which form part of this specification, Figure 1 shows an elevation partly broken to a central section. Fig. 2 shows a top view of Fig. l with part of the nuts and insulation removed. Fig. 3V shews a horizontal section of Fig. l on the plane l 2. Fig. et shows an elevation, partly in central scction, of a moditied form of my invention. Fig.

`5 shows a top view of Fig. ithpar pf the annular nut and insulation removed. Fig. G shows a horizontal section of Figi-lc on the plane 3 4. Fig. 7 shows a vertical central sec tion.

Like letters designate like parts in all the figures.

The nipple A, having a screw-thread or other suitable means of connection to a gas or electric-light ixture, is made with a semiball-shapcd portion d, adapted to lit freely but snugly and gas-tight in the semi-spherical chamber of a casing B, which is detachably joined to another nipple C, that has a screwthread or other suitable means ot connection to a nipple projecting from a line ot supplypipe. The nipple A is diminished in size just below the semi-ball-shaped portion d., so as to form a neck, which passes through the lower end of the casing B through an openin g sufficiently large in diameter to allow it considerable movement. Lugs Gr G project downward from the lower end of this casing, and the spaces between these lugs are adapted to receive projections g g of any suitable form, which are attached to the nipple A in such a position that the projections of the nipple will engage with the lugs of the casing and prevent thc swiveling of the joint, but not prevent movement otherwisc, the purpose being to protect any connected electric conductors from being twisted by the accidental turning ot the joint.

The casing ll may be joined to the nipple C by any suitable means Without departing from my invention; but I prefer to constitute of it and the nipple an insulated coupling by means of the annular flanges l) and c, the flange l) being made to project from the upper end of the casing A, and the flange c to project from the lower end of the nipple C.

A WasherD of insulating materialis placed between them, and another washer ot' insulating material is placed on the top of the lian ge c, and then bolts F F are passed through both flanges and washers, suitable bolt-holes being provided in each. These bolts are screwed'up tight into the nuts or annular nut-plate ff, and thus the nipple (C and oasin g A are secured together. The belt-holes in the liange c are made much larger than the diameter of the bolts, and the bolts being passed centrally through them a space ris IOO the bolt-holes of the flange c. The insulatn ing-Washer D, I make with the two cylindrical flanges I-I and h joining its periphery, the fiange H extending upward to cover the pcriphery of the metal flange c, and the fiange h extending downward to cover the periphery of the metal flange b, the purpose being to prevent contacting of the said flanges with any outside part, such as the canopy sometimes used to cover the joint of a fixture.

I prefer to make the projections g g detachable, as the screw-pins shown in Fic. l, or adjustable, as shown in Fig. 4, in which a band K, having the projections g g, encircles thc ijple e. arl is adapted to adjustment thereon. It is provided with suitable means for securing'it in fixed position, so its lugswill engage the lugs G G on the casing; but it may be desirable when putting up a fixture to turn the nipple C without turning the whole fixture. In such case the detachable or adjustable projections can be disengagedfrom the lugs, and this will allowthe joint to turn till the nipple Gis screwed to its place, whereupon said projections can .be again fixed in position to engage the lugs.

In cases where a ground-current of electricity is needed or desirable an insulated joint is not needed; but it is obvions that an an ti-swiveling ball-and-socket joint is useful and important on any pendent fixture, even, though it has but one electric conducting wire. I will therefore make this part of my invention the sole subject ot' one claim.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1` Tr fixtures .or gas and electric lighting, a ban-and-socket joint consisting of a nipple A, havingthe semi-ball-shaped portion a, and

provided with projections g g, which are external to the casing forming the socket, in conn bination with the casing forming the socket for said se1ni-ballshaped portion a, and provided with lugs G G, which are adapted to engage with the said external projections g g on said nipple, in the manner and for the purpose set forth. t

2. In fixtures for gas and electric lighting, an insulated joint consisting of the nipple C, having the iiangc c, the casing I3, constituting the socket of a ball-and-socket joint, having the fiange b and the lugs G, the intervening washerof insulatingmaterial D, thetop washer of insulating material e, and the bolts ff, in

' combination with a ball-and-socket joint consisting of the said casing B, the semi-ball a, fit-ted therein, as `described, the projections g, and the nipplq A, said elements being arranged in the manner and for the purpose set forth.

3. In fixtures for gas or electric lighting, an insulated joint consisting of a nipple, as C, having the external angular portion, as J, and provided with a flange c, having boltholcs adapted to form annular spaces around the bolts, bolts, asf, having suitable nuts, a wash er of insulating material, as e, having an angular central opening adapted to fit 011 the por tion J of the nipple C and provided with boltholes that fit closely to the bolts, and an intermediate Washer of insulating material, as (hin combination with a flange, as b, having bolt-holes and provided with suitable means to attach a gas or electric fixture, said elements being arranged in the manner and for the purpose set forth.

4'. In fixtures for gas and electric lighting, a nipple C, adapted for attachment to gas pipe and having the flange c, a casing B, hav ing the flange Z), a nipple A, suitably attached to said casing B and adapted for attachment to gas-pipe, bolts F F, for securing said flanges c and b together, and a Washer of insulating material having an integral cylindrical fiange, which serves to cover thc peripheral surfaces of said flanges c and l), as and for the purpose set forth.

. In testimony that I claim the foregoing as my invention I have signed my naine, in prcsence of two witnesses, this 22d day of November, 1889.

EMIL li. (HCNN lill't'l. lVitnesses:

F. W. BELMoN'r, J. F. CUNNINGHAM.

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