US859398A - Incandescent-lamp holder. - Google Patents

Description

PATEN TED JULY 9, 1907- E. E...MAR SH.

INGANDESGBNT LAMP HOLDER.

APPLICATION FILED APR. 24,1905.

" lllhllTElB PATENT ELMER EDWARD MARSH, OF NEWPORT, KENTUCKY, ASSIGNOR 'iO FREDERJ'GK U. KINGSBURY, OFCOLUMBUS, OHIO.

INCANDESUENT-LAMP HOLDER.

Specification of Letters Fatent.

Application filed April 24, 1905. $B1ialll0. 257177.

Patented July 9, 190?.

To all'who'm it may concern:

'Bo it known that I, ELMER Enwmm .MARSII, a citizen of tho United States of America, and a resident oi Newport, in the county of Campbell and State of Ken tuckyhave invented certain new and useful improvemonts in Incandescent-Lump Holders, of which the following is a specification. I

This invention relates to certain improvements in that class of holdors which are especially (losignod for use in. connoctiou with incandescent electric-lamps and which permit of adjustment to acoommodato dillor- (mt positions in which it is desirable to hold tho lamp for use, and the ohjoct of tho invontion is to provido a holdor of this gonorafl charactor of an improved and simpliliod construction Whorohy the lamp may ho moro convoniontly and roadily adjustod in various dosirodv positions [or uso and, also, securely hold againstl1t.(ldental displacomont when the desired adjustment has onco boon el'foctod.

'lho invontion consists in certain novol looturos of tho construction, mmthination and arrangomont of tho sovoral parts of tho improvod hunp-holdor, whorohy oortain important arlvantagos are attainod and the do vico is rondorod simplor. ohoapor and olhoriviso hottor adaptod and moi-o oonvoniont l'or uso, all as will he ln-roinal'lor fully not l'orth.

upward for illustration of tho univorsal-Hmnoction of tho uppor oud olsaid atom; Fig. 4 is an onlargoil partial soction takon axially through tho adjustahlo stom and showing; tho in'l'angomont for guiding tho oud oi tho inolosod tolosoopio-oxtonsion ihoroot'; and -l ig. 5 a dolaohod, lraomoulary dot-ail viow ol tho'lamp-socln-t (lamp or clip at tho lowor ond of tho adjustable stom of tho holdoix I In thoso viows, l indioatos a coiling \'all or othor Ft![)pultlllg -filll'l ttt'ti to which the improvod lamp-lioldor is attaohod i'oi' nuo and 2 indioatoa, as a wholo, a pondont lnackot l'ormod from motul with lugs 3. ii at npposilo sidos for scrow-attaohmonl to said supporting-surlaoo, said hraokot 2 hoing oonstrui-tod with pondont or downWardly-oxtomloil parallol and'spacod arms or bars 4, 'l, tho lowor onds ol' \vhioh aro intogrally-o'onnootod with opposite sidos ot a ring onumuhn' portion 5 which has pendent or downwardlyextended and inwardly-ourvod arms or projootons (l, G a ngod at intorvals around it, thoro being, as horoiu shown, l'our oi said arms (5, (5, although it is ovidout any doai rod nun1- bur may ho omployod.

'lho zmns (l, (i am integral with the ring or annular port 5 and upon tho upper odgol'if said part 5 lhoro are 'n'oduood other similarly spat-oil but upright lugs or projections '7. 7, whioh are, howovor, of loss longth than tho arms 6. Tim ring or annular part5l'orms; cllCllltll lioaring-momhor whoroin is hold for univorsal movemont a hollow hall or sphoro ll oonnoolod, as will ho prosonlly oxphtinod, with tho uppo'r ond of tho adjust ohio rod or stom of tho holdon and tho inward curvatnxo oi tho lowor arms 6, (l of tho ring 5 i =ulliciont to so ouroly hold said sphoro 8 suspondod w in said ring 5 Whilo pormitling iroo movomont ihoiogu' in various diroctions within the ring.

ll indication a frictional boat-inganonihor oi invortod oup iiko or hollow homi-sphori allorm and Within whoso undor convoxity is adapted to snugly lit and turn tho sphorica uppor ourl'auc of tho hail t and said momhor t) has around its ,lou'or odgo portion a doponding llango or shirt ltl adaptod to talio iusido tho upright spaced lugs 7, 7 on tho top ol ring 5, in such way as to provont latoral displm'omont of tho fi'iclional-im-mhcr El from tho lli';(l(l'l \'lll hall 8 during the "various movomoms nooosaary [or said hall in tho adjuatmoiit of tho improvod holdor. 'lho l'riotional l oaring-memhor t) is also proi-idod with an odo-o tlang'; or horizontal port-ion lt ouisido tho poudonl llango or ltirt, l0, and said odgo l5 produood at tho uppor onds of tho \tltlt'lll Sidodnn's i, l of tho lnzu'lcot 22.

Ill; is a out. having 'iO\\'-;\ilj\lr-'l mont upon the lower tlu'omlod ond oi atom l3. and l7 is :1- spring coilocl on said .lt*!i1 l3 holihooi. tho nut ill and tho strap or yolio l with its tonsion oxortod on tho nut in such a way as to hold tho momhor ll oloh-ol y pi'ossod in frictionalongagoniont upon tho sphoi'ioal t p Mn'l'aco ollh ball t5v 3y turning tho nut Hi, tho springaousion may evidontly ho \ariod lo! ("aiming tho momhor 9 to boar with groator or loss l'orco upon tho said hall 8.

it; indioatos tho ontor main momhor or alcove cont prisod in tho adjustahlo rod or lamp-lwlding stom of tho iinpl'mod holdor, and tho upper ond of said sloovo or member 18 has threaded-engageinent, as indicated at 19 in dotted-lines in Fig. 1, with the lower central part of the ball 8 so that the holding rod or stem is caused to depend below the bracket 2.

20 indicates the interior telescopic-member of the adjustable holding rod or stem, and this inner member is of a diameter less than the bore of the sleeve 18 so as to permit of being slid upwards in said bore in the position seen in dotted-lines in Fig. 1, so that the holder rod or stem may be thereby shortened, a reverse sliding-movement of the inner member 20 serving for its withdrawal from the lower end of sleeve l8 in lengthening said holder rod or stem.

The upper end of the inner member 20 has a reduced part 21 on which is held a leather or other washer 22 adapted to prevent lateral play of the inner member within the larger bore oisleeve 18 without impeding the movement of said inn r member in lengthening and shortening the holder rod or stem and the lower end of said inner member 20 is extended down below the lower end of sleeve 18 through a perforated cap 23 screwed olnsl'eeve 18, a spring 24 being coiled on the inner member 20 within the hollow of the cap with its turns or spirals arranged to frictionally bear on the said inner 1nember'20 to irictionally impede the slidingmovement thereof within sleeve 18. The upper end of said spring 24 bears on the extremity of sleeve 18 and when the screw-cap 23 turned, a certain adjustment of said spring will be effected whereby 'it may be caused to bear on the inner member 20 with greater or less tension so that more or less force will be necessary for withdrawingthe member 20 from sleeve 1.8 or sliding said member within said sleeve in the longitudinal adjustment of said parts for lengthening and shortening the stem of the holder. A

The lower extremity 25 of the inner stern-member 20 is perforated for the passage of a clamping-screw 27 seen in Figs. 1 and 5 and by mean of said screw 27, clamping- arms 26, 26 are held to opposite sides of said lower perforated end 25o? said inner member 20, the arrangement being such that when said screw 27 is loosened, the clamping-arms may be adjusted pivotally upon the said member 20 as indicated in dotted-lines at y in Fig. 1 and when'any such adjustment desired has been effected, said screw 27 may be again tightened to hold the parts locked in position. The rod 20 may also be rotated in the sleeve i8 ior facilitating such adjustmeut, and the universal connection afforded by' the construction at the upper end of the stem above described permits the adjustment of said stem at. any desired angle as indicated in dottedlines at .1: in Fig.

l the frir-tional-engagem ent of l earing-n'iember 9 with ball 8 serving to hold the holder-stem in the desiredadujstcd position as willbe readily understood.

The clamping- arms 26, 26 constitute a clamp or clip by means of which an incandescent lamp 30 is supported at the lower end of' the holder-stem and for this purpose, said arms 26 have rr'everselymurvcd end portions 28, 28 connected by a set-screw fl] and adapted for clamping-engagement on opposite sides of the lamp-soclret 29, the screw 31 being-adapted to, be turned to permit. the socket to be tightly gripped between the jaws 28 of theclamp. I

252 indicates the conductors extended from the lampsocket 29 through a loop or eye 33 at the lower end of 36 on the upper part of sleeve 18, and 37 indicates a coil-spring of sufiicient strength, one end of which iscon'nected with the said shaft or stud 35 while its opposite end has connection with the clip 36, the tension of said spring being exerted to wind up the conductors 32 upon the spool or reel 34 so as to prevent sagging of the conductors when the holder-stem is shortened. 38 indicates the portion of the conductors extended from the spool or reel 34 to an insulator 39 at the-ceiling or other supporting surface 1. Y

The iinproved lamp-holder constructed according to my invention is of an extremely simple and inexpensive nature and is especially well adapted for use by reason of the ease and convenience with which the lamp may be adjusted in any desired position and also of the scci lity with which the lamp is held against displacementwhen in adjusted positionfthespring tension devices piovided at the upper and lower ends of the sleeve serving to effectively counterbalance the weight of the lamp and of the several parts of the holder and being capable of ready adjustment in order that 'looseness resulting from wear or careless handling of the device may be readilytakcn up.

.i claim:

1. A device of the character described, comprising a sup porting bracket. having adjacent one end thereof an open circular bearing member and adjacent the other end thereof a cross-bar with a central opening thercthrough, n spher-,-

leal member adjustnbiy positioned in the bearing member. a hemispherical shell member positioned in said bracket and adapted to frlctionaliy engage suld spherical member and havlng'nn external circumferential flange adjacent the edge thereof, a stem adapted to engage said hemlspherical shell with one of its ends and said opening in said cross-bar with its-other end, a spring curried by said stem, aseries of projections carried by said bearing member and :idapted'to engnge the edge of said hemispherical member, and a lanip-holder-stem carried by s'uid spherical member. I n 2. A device of the character described, comprising a Human-ting bracket having adjacent one end thereof a' circular bearlm: member provided with a series of spaced upturned projections and a serles 0!,pendent arms, a

spherical body seated loosely within said circuhuhearing member and engaged by said'pendent arms, a frictional member having a concave surface iltting'over said sphericul member and having u skir t-llke iiange adopted to engage the inner faces of said upturned. projections, elastic means for maintaining the engagement of said frictional member with said spherical member, and n lump-holder rod carried by said spherical member. i

ii. A device of the clm rzlcter described, comprising a biuckethaving an open, circular bearing: member, aspherlcnl member loosely seuted in said bearing member and having a lamp vholder rod projecting therefrom, a frictlo'nal member liavlng a cdncnv'e surface iittlm: o'v'er said sphericnimember, a pin having one end in sliding engagement with an oriliced cross-bar on said bracket and having its other end in adjustable engagement with said i'l'lctlolull member, a not on said pin, and (1 spring coiled on said pin I and engaging said nut at one end and said crossbar on said brucketnt its other end.

Signed at Cincinnati, 'Ohio, this zlst day oi Apribl'JU-r. 1 I IGLMER EDWARD MARSH. 'Witness T I Join: rim/ls Jones, Witunii Scnucimno'r.

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