US1758469A - Lamp bracket - Google Patents

Description

May 13, 1930. A. w SANSBURN LAMP BRACKET Filed Oct. 8 1928 3 Sheets-Sheet l anuemfoz AM Earl 51:] LLI'I-L May 13, 1930. A. w. SANSBURN LAMP BRACKET Filed Oct. 1928 5 Sheets-Sheet 2 AW 5 an 51:1 u r 11 May 13, 1930. A. w. SANSBURN 1,758,469

LAMP BRACKET Filed oct- 1928 s Sheets-Sheet s anventoz AW 5 ans 1:11.11? TL attozumzo Patented May 13, 1930 PATENT orncs ALEXANDER W. SANSBURN, F PILARES DE N ACOZABI,

LAMP BRACKET Application filed October 8, 1928.

The present invent-ion is directed to improvements in lamp brackets.

The primary object of the invention is to provide a. device of this character so constructed that the lamp can be conveniently adjusted vertically when desired and can also swing in a'horizontal plane.

Another object of the invention is to provide a device of this character so constructed that it can be easily and quickly applied and is so arranged that the current conducting wire can be easily applied thereto.

Another object of the invention is to provide a device of this character so constructed that the lamp will be supported upon its currentconducting wire, said wire serving also for supporting a counterbalance.

With these and other objects in view, this invention resides in the novel features of construction, formation, combination and arrangement of parts to be hereinafter more fully described, claimed and illustrated in the accompanying drawings, in which Figure 1 is a side elevation of the device, 525 partly in section.

Figure 2 is a similar view of a modified form of the invention. 1

Figure 3 is a modified form of the invenion s10 i 1e .1 i t l w ng tl sa ne when n use in con nection witha kerosene or other fluid burning lamp. Figure 4 is a side view partly in section, of

another modified form of the invention.

Referring to the drawings 1 designates a portion of a ceiling and to which is secured a block 2, said block having threaded therein the upper end of a tube 3, said tube having rotatably engaged thereon a union 4. In order to maintain the union in place the lower end of the tube 3 has connected thereto a cap 5 which will obviously maintain the union in place but at the same time permit the same to rotate freely upon the tube.

In this form of the invention a pair of diametrically opposed tubular arms 6 are provided, said arms having their inner ends threaded in the sockets 7 of the union 4. To the upper ends of these arms are threaded I Ts 8 in which are rotatably engaged tubes 8. 59 to the lower ends of which are connected Ts Serial No. 311,193.

9, the latter Ts having engaged therewith tubular arms 10 and 11, each of which having secured thereto a clip 12 and 13, which rotatably support pulleys Hand 15, respectively. It will be observed that the pulleys ;5 14; will be located adjacent the outer ends of the arms 10, whereas the pulley 15 will be supported intermediate the ends of the arms 11. The tube 8 is retained in the T 8 by a cup 15. 15.

The electrical conducting wires 16 are passed through the tube 3 and thence through perforations 17 formed in thearms fixed adjacent the inner ends thereof, said wires being extended longitudinally along-the arms 2 6 and are then passed through grouped perforations 18 and thence through the Ts 8 and 9 and through the perforations 19 of the arms 11. The wires are then passed through perforations 20 formed in the inner ends of 1 arm 11 where a loop 21 is formed, said loop having engaged there-with a pulley 22 which supports the counterweight 23.

The wires are trained over the pulleys 15 and 14 and have their terminals connected to a lamp socket 24 in which is engaged an incandescent'bulb 25, there being a shade 26 for the bulb. r

The weight of the lampand its shade are such that the weight 23 will counterbalance -59 the same in order that the lamp can be raised or lowered and maintained in any selected position. Since the arms 6 are rotatably engaged-on the tube 3 it is apparent that the lamp can be swung in a horizontal plane to f position the same where needed.

In Figure 2 there is illustrated a single unit which is supported by a wall 27 and to which is secured vertical-1y spaced brackets 28 for rotatably supporting the Vertical rod 29, 9 the upper end of which has secured thereto a union 30. The union supports the horizontally disposed tubular arms 31 and to-which is connected the arms 32 and 33, and since these arms support the lamp 34 and weights in the same manner as that disclosed in the preferred form of the invention a detail description thereof is not thought necessary. The lower end of the rod 29 is rotatably supported upon the bracket 36 which willob- .9

viously prevent downward movement of the rod, but will permit the same to rotate freely when it is desired to swing the lamp 34:. In this instance the current conducting wire 37 leads from aswitch 38 carried by the wall.

In Figure 3 there is illustrated a rod 38' which is rotatably supported by brackets 39, said rod having an arm 40 fixed to its upper end and to which is carried the arms 41 and 42, said arms supporting the pulleys 465 and 44 and around which are trained a chain 45,

one end of the chain being fixed .to the inner ends of the arm 42 while the other end of said I chain has carriedthereby rods 46 which support a holder 47 for receiving a fluid burning lamp 48, A counterweight 49 is employed "and has carried thereby a pulley 50which engages the chain-and operates in the same manner as the weight illustratedin theother forms'of the invention,

In the modified formas shown in Figure 4, the tubular arm 51 is-connected to the ceiling in the same manner as the arms of the preferred form. The arm 51 has carried upon its outer end a T 52 in which is rotatably mounted a tube 53 and rotatably engaged upon the lower end of the tube is a T 54:, said tube having caps 55 and 56 threaded upon its upper and lower ends to maintain theparts the lamp.

--It will thus beseen' that a bracket has been provided so constructed that the lamp can be in assembled relationship. Threaded in the ;T 54 is atubular arm 57 having'rotatably mounted thereon pulleys 58 and 59 and over whichthe conductor'60 is trained, said conductor being also passed through the tube 53 and looped as at 61 for engagement with the pulley 52 carried by the counterweight 63.

"*The -outer end of the conductor has fixed thereto a socket 6t'forsupp'orting the incandescent bulb 65. i

W1 Theflcounterweights are preferably of bowl 'like formation in order that weights may be placed therein. to accurately counterbalance conveniently swung in horizontal plane to various points, and ad usted vertlcally 1n a simplefand practical manner.

From the fore-golng, it is thought that the construction, operation and many advantages of its pivotal connection, pulleys carried by the fixed arms, said wire being trained over the pulleys, a lamp carried by one of the terminals of the wire, and a counterweight having a pulley carried thereby and engaged with the wire intermediate its ends for counterbalancing the lamp.

2. A lamp bracket comprising a rotatably supported arm, arms having their opposed ends rotatably connected therewith, and havlng clips carried thereby, pulleys carried by the chps, a current conducting wire extending longitudinally of all of said arms and trained round said pulleys, said wire being of the pair of arms, a chain having one of its terminals fixed to one of the paired arms and trained over both pulleys, the other ter minal having a-holder connected therewith, a lamp in the holder, said chain being looped intermediate its terminals, and a counterweight having a pulley carried thereby and engaging the looped portion of the chain for counterbalancing the lamp.

4. A lamp bracket comprising a rotatably supported horlzontalarm, a T'carried by the outer end thereof, a tube engaged in the T, a second T engaged on the tube, said tube being rotatable in the Ts, a pairof horizontal arms having their opposed ends engaged inthe second T, a current conductingwire passing through the tube and movably supported upon the last named arm, a lamp supported upon one end of the wire, and a counterweight engaged with the intermediate portion of the wire for counterbalancing the lamp. I p

In testimony whereofI affix my signature.

ALEXANDER w. SANSBURN. 1. s]

of the herein described invention willbe apparentto those skilled inthe art, without fur ther description, and itwill be understood that various changesinthe size',sh'ape and proportionan'd minor details of construction, maybe resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

- What is claimed is 1;;Alamp bracket comprising a supporting tube,-a horizontal arm rotatably engaged with said tube, arms rotatably connected to the first-named arm, a current conducting wire leading'from the tube and engaged with said arms and disposed uponopposite sides

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