US754235A - Extension-fixture for incandescent electric lamps. - Google Patents

Description

N5. 754,235. PATENTED MAR" 8, m4.

QM. PITEL. EXTENSION :EIXT'YRE FOR ENGANDESOENT ELECTRIC LAMPS.

APPLICATION FILED MAY 6, 1903.

N0 EODEL. 3 SHEETS-SHEET 1.

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U. M, PITEL. EXTENEEON FIXTURE FOR ZNOANDESGENT ELEGTRIG LAMPS APPLICATION FILED MAY 6, 1903.

L 0., 75 2x235. PATENTED MAR. 8, 1904.

HQ MODEL. 3 8HEETS-SHEET 2.

5 head may oe-raised or lowered es eelul improvement 111 i SFHCIFIGAZIGH formlug p,

Applicci'ior. filed liay 5 4 new my invention coil- Wue heme cezmit known Maiden, in the cou ty 01 (l ccmhinacione of 1 :nhcd, e (I State 033 Connecticut have levee or incandescent Electric LEA! hereby declare the fol v connection with the eccompmf' and the numerals of reference ml to be a full, clear, and exact; descl'lpt same, and which said drawings censm-uul-e of chic, specification, end represent, iii--- Figure 1, a View in side elevation one form which an extension-fixture for .lncehd electric lamps constructed in eccozr 1C3 with my invention assume; Fig. e thereof Wiih a "portion of the upper the drum broken away to Show the c nnection it is fonncd with en u pbetween the uppel rotatable contact-cup and y edmce ilzmges lo M),

the upper braid-covered conductor cm the ncrchy its materiel? em:-

ee grooves or annular l3, mid lei. lie uppe:

- deep conceniric recess l5, shaped to form e901- id (.h-us'n moon i1- fcrmcd at it; :ldcd stud 13 we i euepcmicn,

7 For cho mol (no? Sll-QWiL) in -)()l'(jCliLlil craves-- JV with, or she de- V A h elitering thaw d l:, lslce\'cepgl broken away; 9., e deteched leveise i in film: ccilingiz 'i the ueual we). 719W oi the heme; her 10 e lei-med wlsh lon liilfli- Fig. 10, dcieched ViSW. L

1 01' end of a coiled in elevation of the drum-arbor; Flo. ll, 21 igfihe inn .verse end View thereoi; detached 1g 21 locai'cli within the drum and havplan View of such e bell-receiving contectend attached totlie inner 'phpiece as may be used in place of bee coemctand psopca-liencd in power Lo the cups shown and described; Fig. 13, fwLculbllfiil I vc lamMixtuic whichis notshown, plan vlew Oh one of tneawo-pe ,coirug led is emetielly balanced, o to speck, \Jl she powe. oi the spring Jhich up the drum and lif s the lamp-i Lure, Elie erher l8 pnesee cpcning in the upper 21 cii'cular openi pulleys; Fig. 14 a detached View in inside 1 l elevemon 01 one pare at one of the ccrrugliced l l pulleys.

- This inventioni detesto improveznentin extens'nmfixtures 'for incandescent elec"ic lamps, the object being to produce com'gze z convenient, durable, and efiec bl ivhereby an electric lamp suspended The iower end of J are not in con ct trio cenncc ion wi contact-indie to the lower the "form 0; (t

per cross-h2ir trz-ti opening end the arbor and 29, it will 5 ings 28 end 9 (llaillii'ifi th whe" not:

cted u.

we cope -n .l with. i v). our note l 3 3 N r r v rrr' co n1 its loner or, is shown,

i. I secur to'the topo the reception of a coupling};-

i the d rum.

- is also formed "with n central openmg "for the recc the arbor 9 in 1 rov de i anti-mull to wi'zic e orniwcovercd 4 opening; 36, formed in 0 "91:

lower coirpcrtment Lia conductor is connected through 2H1 opening 3 in the with the radially-projocting' 55 tact-cup 39 also Conn -d for rotation therewith. For secured to en insuletim disk is formed, as r-ihown, v. c coupling-pin 3C3, secured resorted to for en icing the cups end to rotate with said cup 39 has n non.

tachcd. to 2M1 insulating-dish 'c conductors 36 is secured through an oodv of the drum, in;

ctor round in at its inner end hod oi the dr n11 arm 38 of at conwith the drum "3 this purpose it is -20, which in turn itch Lil receiving" to t e bottom of the drum; but of con other means may he otntnhle contactthe drum. The

ctzztnble iellow iii, at i rigidly coni il l l l l l l l nectcd with the lower cross-her 3 of the frame, these two cups having their edges out of contact, but being kept in electric connection by n of contact-hells 39. The said disk 43 in formed with crndiol arm 15, with which a Wire or connection. 26" is connected, the current entering the fixture through the wire 26 aforesaid and. leaving it through the said wire 26. ill nisohe noted that the rings 43 have itrnl o cnings 3?)"nnd 45,larg;er in diameter the P ,dlcineter 01' the arbor 17, from which "he 7 are thus insulated, es seen in Fig: it thus be seen that as means of electrically connecting the braid-covered conductors 36 and n the drum with the wires 26 and 26, l electric current into and from the Jle nploy, as shown two pairs of cups,

themsev es connected by contect-lmlls,onc cup er ctetnhle with the drum. At its end the arbor 17 is formed with rse holes &6 and. 5:7forthc reception of hing-pin 428, by which it is confined in he insulating-disks 29, 32, 40; and 4-4 made either of rubber, porcelain or any uitahle non-conducting material. he reaction the drum 8 under the influhei lg stationary with the frame fiction-- 9 gel, edepto be down over the orew-tfnremled forming the upper end of the arbor i7.

by means of c sheet-motel s r1 59 hitting it central open ingi rill feet which rest upon the upper insulating i, and the greater their downward pres- .1 union it the greater-the -friction developed 'etwcen the contact-cups of the respective oi contact-cups and their interposed The friction developed mils, and vice verse.

:ngnges with its upper face and which in np- PlIQfl to the stud U5. The ends of the said npriug are confined in place by means o l vidcd with corrugations musing the pulleys.

to bite the hrnid-ccwcrcd conductor and prevent the some from slippin mounted in the upturned end of an arm 54; formed integral with the lower cross-her 3 of the frame, and provided with it housing" 55. 'ihe iowcr lucid-covered conductor 37 passes over :1. corresponding two pert pulley 56, mounted in the upturned end of an arm 57, located in line with the arm 51- nforesziid and aiso formed integral with the lower cross-her of the irzune. This pulley is provided with housing; 55 like that before mentioned.

in order that too great at strain may not be imposed upon the conductors 36 and 37, I precc of .ic spring :21 may be controlled, if dc- 5 ends oi this spring are turned. inward to,

This pulley is' J this s n'in is re ulated b a nut 52 w i'ch

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