US973558A

US973558A - Adjustable joint for electric-light fixtures.

Info

Publication number: US973558A
Application number: US48949709A
Authority: US
Inventors: Edwin F Pierce
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-04-12
Filing date: 1909-04-12
Publication date: 1910-10-25
Anticipated expiration: 1927-10-25

Description

E. PJPIERGE. ADJUSTABLE JOINT FOR ELEGTRIG LIGHT FIXTURES.

. APPLIQATION FILED APR; 12, 1909.

UNITED STATES PATENT ()FFICE.

EDWIN I. LPIERCE, OF MILWAUKEE. WISCONSIN.

ADJUSTABLE JOINT 'FOR ELECTRIC-LIGHT FIXTURES.

Specification of Letters Patent.

Patented Oct. 25, 1910.

Application filed April 12,1809. Serial No. 489,497.

To all whom it may concern:

Be it known that. I, EDWIN F. PIERCE, a

citizen ofthe United States, residing at Milwaukee, county of Milwaukee,'and State of Visconsin, have invented new and useful Improvements in Adjustable Joints for.

Electric-Light Fixtures, of' which the following is a specification.

My invention relates to improvements in adjustable joints for electric light fixtures,

and it pertains to. that classwhich are used either with'or without'ga's pipe connections. The construction of my device is explained by reference to the accompanying drawings,

in which Figure 1 represents a vertical section and Fig. 2 .is abott-orn view-of an uriin'sulated adjustable fixture-adapted to be connected directly with the ceiling of. a room. Fig. 3 is a vertical section and Fig. 4 is, a bottom view of an insulated adjustablefixture, also connected with the ceiling of a room; and

' tom view of a combined gas and electric- Fig. dis a vertical section and, Fig. 6 a botlight fixture with' an adjustable insulated hanger. g I

Like artsare identified bythe same reference figures throughoutthe several views. 1 is a-tubula'r hanger Which isprovided at its lower end with a screw threaded bearing 2,by which it. 'is adapted to be, coupled with a chandelier, lamp, or other light'fixture ofordinary cons'truction. The upper end of thehanger 1 is provided with a spherical shaped member :3, which together with the cup shapedbrackets forms a so-called ball and socket joint, which permits the hanger to be-freely moved or swung in any direction, as may be required to bring the hanger and fixture suspended therefromto the vertical regardlessfofu the uneven surface of the ceiling, or thefact thatthe supporting" bracket is'out .of plumb. The'lower end: of the bracket 4 diverges outwardly forming an annular flange 5 ter- -m-inating at a" distance from the lower end of the hanger 2', whereby the-required space is provided'betweenthe hanger and the on posing surface of the annular flange for the proper movement of thehanger to bring the same to the vertical as stated. 1 The annular flange 5. is rovided with a plurality of set screwsfi, w ichcontactwith the lower end of the hanger 2 and serve to hold the hanger, wh'enadjusted in its proper. position; The bracket 4 is open at the top, whereby the hanger 2 is provided at its upper end with an outwardly diverging fiangeS and is surrounded with 'a spherical shaped insulating bearing 9, thc'exterior surface of which conforms in shape to the opposing bearing surface 10 of the bracket and the two parts 00- operate to form an insulated ball and socket joint, which permits of the lower end of the hanger 2 being inclined as may be required to bring the fixture suspended therefrom to the vertical beneath the bracket.

In the form shown in Figs. 5 and (3, the

annular fastening'plate 7 is dispensed with and the upper end of the bracketet is provided with a threaded coupling sleeve 11,

which isada'p'ted to be coupled to the endv of a gas pipe frorn'which the' fixture is adapted to be suspended. Thecoupling 11 is-provided' with screw threaded bearings .12, with which. it; is connected with a similar threaded bearing formed" in the upper end of the bracket 4. 13 is an inwardly diver in'g iannular-collar, which is connected r wit 1 the inner wall of the coupling 11 and terminates. centrally above the central duct 14 of the-ban er 2, whereby such" moisture as may arise rom condensation in the gas pipe will be caused to drip into't-he duct 14: o'ftlie'hanger. The opposing surfaces of the insulation 9 and the bracket 4 are so ground the hanger 2 and the lower end of, the coupling l1 and serves to retain the hanger: in close contact with thexsupporting bracket,

caping is thereby prevented.

I am aware that 1i ht fixtures have heretofore been suspende from ball and socket joints, the sockets of which have been '95. a'sto form a tight joint'and a spiral spring .15 is interposed between the upper end of formed in two parts adapted to be separated horizontally at the center of the ball for the reception of the latter. 'By 111 improvemerit, however, the socket or so ca ed bracket .is made open at its. upper side for the recep-' hanger and for this. reason it tion of t e whereby a tightjoint is maintained between such parts and the liability of the gas esbecomes unneeessar to form thebracket inconstruction made into member provided at vthe. junction of such and retai'n- 'the same at any desired point or- --tures of -he clam described, the combmation a downward y 5Q'member of a ha and 6 of the drawings, whereb the I anger 'ters Patenti is'- lower side with a downwardly diver member-of such hanger, and at the junction of such recesses with an aperture forthe v hanger,

in shape and ada such arts are by my a 1y, whereby the construction is simplied and expense of manufacture diminished. 1

To prevent the hanger 2 and the spherical member connected therewith from turning in the supportin bearings of said bracket, I have provide said bracket'and hanger with closel fitting angular bearings, which are locate at the junction of the spherical member withthe c" lindrical member of such, hanger, as more 0 early shown in Ei s. '2, 4

separable parts an is prevented from turning in t e bracket as a gas pipe or other fixture is being secured thereto.- Having thus described my invention, what I claim as new, and desire to secure by Let- 1. In 'a evice of thedescribed class, the combination of a bracket provided on its upper side 'with a downwardly converging spherical shaped recess for the reception of a spherical member of a hanger, on its re cess for vthe reception of the cyllnd ical reception 10f. the-angular bearings of the a hanger comprising an upper spherlcal member and a lower cylindrical;

memberswith-a ular bear' sconform".

ted to fit 1n%o the angu l a bearings of Y sai, aperture, whereby: said, hangKer is prevented from turnin with said brac st and a plurality of radia adjustable screws havin tlirea ed beari in. the

downwardly ivergin'g walls of sa d bracket 3 adapted to' infi i-nge-attheir inner ends against the feentra' member .of said hanger adj stm t P 2.: In adj us'table' joints for electric light fi'xof a bracket rovided on its u per side with 4 v nvergin sp erical shaped recess for the receptiono? a spherical shaped. er',;and on-it-s lower sidetrally above t .tion of a-bracket provided on its hearings in the up'per'si of, sai

I of said with ,a downwar I, y diverging recess for the reception of the cylindrical member of such hanger,- a hen ercomprising an L1 lower cylindrical member suspended in said bracket, a screw threaded eouplin havin threaded bearin s in the upper sidfi of mi bracket provided at its lower end with downwardly conver mg flanges terminating e central aperture 0 hanger -and adapted to said ing threaded bearings in-- the -downwardly diverging ed to the central member of said hanger and retain the same at any desired pointof-adjustment.

L a In adjustable joints for. electric li ht scharge. liq'uid'. moisture from above into saidaperture, anda plurality of radial adjustable'screwshavwalls of said bracket and adaptimpinge at their inner ends against pper spherical shape insulating member an 'a Gen-'- .1

fixtures of the class described, the combinai with a downwardly convergintg spherical shaped recess for the reception 0 a spherical shaped member of a hanger, and on its lower side witha downwardly diverging recess for upper side a the reception of the cylindrical member of such hanger, a hanger comprising an upper spherical shaped member and a lower cy lindrical member suspended in said' bracket,

a screw thrcided-couplin having thr'eaded provided at'its-lower'e'n'd converging fia above the centra a spiral wire s screw threade coupling and the spherical memberfof said hanger, aplurality of radial adjustable screws,

aperture of said hanger,

necting said bracket with the ceil'in of a tures from said hanger, a

In testimony Witnesses:

e of. said bracket with. downwardly, es terminating centrally ring interposed between said having threaded bearin' s in. the downwardly diverging walls- 5 bracket and adapted to. impinge at their inner "ends against the central member hanger and retainthe same: at; any desired point of adjustment, means-for eons 1 room and means- :for sus ending lig t fi'xsubstantially as and for the. purpose specified. i, .1:

whereof I aifix-myslgnature in the presence of two witnesses.

' Y EDWIN F. PIERCE,