US1158113A - Electrolier. - Google Patents

Description

R. B. BENJAMIN. ELECTROLIER. APPLICATION FILED MAR. 1 0. 19| l.

Patented Oct. 26, 191

I 'i HAM i I@ /0 mi h LEI y `y I I 43 7g t mH53 MI gd 375 \YI 3S 415 u Y. u y 555 Q) REUBEN B, BENJAMN, OF CHXGGO, ILLINUS, SSGNOR T0 BENJAMN ELECTRIC MFG. COMPANY, GF CHCGG, LLNOS, A CORPGRATION OF ILLINOIS.

ELEGTROLEE,

Specication of Letters iatentD Patented Uct. 2d, Mild.,

@riginal application lcd December 27, 13 6'9, Serial No. 535,162. Divided and this application filed March To all whom t may concer/n:

Be it known that I, RnUnN B. BENJA MIN, a citizen of the United States, residing at Chicago, in the county of Cook and State of lllinois, have invented new and useful Imf provements in Electroliers, of which the fol lowing is a full, clear, concise, and exact description, reference being had to the ac companying drawing, forming a part oit this specification. L

My invention relates to electroliers having individual switches for the lamps carried by the various arms thereof, and has as its principal object the provision of a device of this character, in which jarring of the lamps, due to the operation of the switches, is minimized.

lit is a further object of my invention to provide an improved pull switch mechanism.

lt is a considerable disadvantage in electroliers of the usual forms of construction that the switches for controlling the lamps are usually carried by the sockets thernselves. This gives rise to -a jarring effect upon the lamps, particularly when the switches are of the kind known as pull switches. This kind of switch. is, however, in other respects a very convenient variety. Now that the` tungsten and other similar lamps have come into general use, this disadvantage has become the more important, since the filaments of these lamps are very delicate and a very little vibration injures them. l remedy the above drawback vby' of pull switches, one

providing a plurality for each arm of the electrolier, situated in the body of the electrolier, so that there is no chance of appreciable vibration 'being imparted to the lamps.

ln the accompanying drawing, I have shown an electrolier constructed in accordance with my invention, the device shown being the same, in its details, as that described in my PatentNo. 1,016,317,l dated February 6, 1912, of which this application is a division. It is to be understood, however, that, in other embodiments of my in vention, the details of the electrolier may be changed without exceeding the scope of my invention as defined in the appended claimso lin the drawings: Figure 1 1s a partly sec tional elevation of an'clectrolier construct- Serial No. 613,571.

ed in accordance with my' invention; Fig. 2 is a plan of the switch-supporting base; Fig. 3 is a detail sectional view, the section being taken on the line 3 3 of Fig. 2; and Fig. 4 is a detail sectional view, the section being taken on the line d-Ll of Fig. 2.

Referring now to the drawings, 1 0 is a supporting plate or member adapted to be secured to the lower end of a conduit such as 11. To this plate are connected a pluralityof lamp-socket-supporting arms 12, the connection being effected by securing L-7 shaped extensions 13 upon the ends of the arms 12 and connecting these extensions to the plate 10 by means of hollow rivetsA 14 passing through suitable holes formed in 'the supporting plate 10 and in the extensions 13. The hollow rivets 14C are of suiicient size to permit the passage therethrough of the conductors leading from. the sockets and entering theelectrolier through the hollow arms 12., To the lower side of the supporting plate 10 is secured, as will lbe hereinaiter described, a switch-supporting base 22, the base being protected by an' outer casing 16 which lits upon the plate 10 and is formed with a plurality of vertical recesses 15, through which the socket-supporting arms l2 extend outwardly. ln order to impart a pleasing and finished appearance to the device, a hood 21 is mounted on the conduit 11, the hood being arrangedto engage over and close the upper end of the casing 16.

The switch-supporting base 22 is secured in placeupon the lower side of the supporting plate 10 by means of screws 23 which pass through the base and into thesupportu ing plate. -These kscrews also serve to secure in position upon the underside. of the base 22, a bridge 24 to which the casing 16 is attached by means of a suitable thumb screw 25. Clamped between the bridge 24 and the under side of the base 22 is an insulating plate 26 which extends over the whole of the lower tace of the base 22.

rlFhe base 22 is formed with an upper and a lower annular recess, 27 and 28 respectively, in which are secured, by means of suitable rivets such as 29, conductor rings 30 and 31. The upper conductor ring 30 carries a binding terminal 31 to which onel ot the leading-in wires, 'entering through the ioo ldd

conductors leading vmg ring 31 carries minals 32, to one of conduit 11, is secured. Thev lower conducta number-of binding ter-A which the other leading" in wire is secured. The other binding terminals 32 each receive the endof one of the from the lamp sockets i and extending through the arms 12 and hol- .terminal plates carry'binding terminals 35 y each of which receives the end of a conductor leading from the respective lamp socket. To accommodate the conductors whlch are to be securedto the binding lterminals 35, the, l

baseis formed with passages 36 extending therethrough and opening adjacent these binding terminals. The'conductlorring 30 isV provided with a plurality of spring centact strips 37 extending outwardly through suitable passages formed in the base 22, one

of these strips lbeing provided for each of the Contact plates 33. These Contact Strips tll', adapted t0 be forced into contact with the plates 33 by means of triangular cams 38 mounted upon spindles 39 rotatably sup- Aported in suitable 4recesses of the base.

When acontact strip rests upon one'of the flat portions of its particular -cam it remains out of contact with the corresponding con- 'that one'of its angles ring 31 and the other tact plate 33, but when the cam is turned so bears against the con tact strip, the latter is forced up against the contact plate 33. Electrical connection is thereby established between Athe conductor ring 30 and the particular contact plate 33, current being thereby enabled to flow from the leading-,in wire to the conductor ring 30, thence to the particular contact plate 33, thence to the lamp and back to the conductor leading-in wire.

In order .that the rotation of the cams 38 may be effected, a ratchet wheel 40 is mount-` ed upon each of the spindles 39, each of these etA -seein that a 'single ratchet wheels having six teeth. Rockably mounted upon each spindle 39 is a lever 41 carrying a spring pawl arranged to engage the teeth of the adjacent ratchet wheel. To each of these levers is attached a flexible cord 42 by meansof which the levers may be operated, the casing 16 being formed with suitable openings through 42 exten tween the levers 41 and the support plate 10 to effect the return ofthe levers after a switch has been operated. It will thus be pull on any one of the cords 42 will operate to switch the corresponding lamp either on or od', while a second pull will put the lamp into the reverse` condition. rlhe switches being supported in kupon said plate' and which the cords v Springs 43 are connected bethe body of the electrolier, little or no vibration is imparted'to the lamps carried by the arms 12, when the lamps are turned onor oi. Besides this, the construction is a very simple one and very convenient in use.

aving thus'desc'ribed my invention, what I claimv as new and ,desire to secure by Letters Patent, is:

rality of lamp. socket carrying arms secured extending radially therefrom, an insulating base mounted on the under side'of said plate, and a plurality of pull switches, one for each of said lamp smret carrying arms mounted on said base an amp sockets carried on said arms, the pull means for these switches being located around the axis of the center support in positions corresponding to -the positions of the various lamps whereby the operator may know which light will be lit when a certain pull is operated.

.2. Ain electrolitr comprising, in combina- 110113I il' Clltltli SllIlDOltlIlg plate arranged to e secured upon the end of a conduit, a plurality of lamp socket supporting arms carried y'thereby and radially extending from said conduit, an insulating base secured on the under side of said supporting plate, and a plurality of pull switches mounted on said base, one for each of the sockets carried on said arms, and an inclosing cover for the base, the pull means for these switches being located around thev axis of the center support in positions corresponding tothe positions of the various lamps whereby the'operator may know which light will be lit when a certain pull is operated.

3. Thecombination with a central support, of means for supporting a plurality -of electric lamps thereon around the axis of said central support, and a plurality of pull switches, one for each of said lamps, all supported independently of the lamps by said central support, the pull means for these switches being located around the axis of the said central support in various positions corresponding to the positions of the various lamps, whereby the operator may know which light will be lit whenA a certain pull is operated.

4. A plural lamp fixture comprising means for supporting a plurality of lamps, a `conducting member having a terminal obnnection for one of the main feed wires,

and a plurality of terminal connections, one l adapted to control the circuit of the meeuw 5. A plural lamp fixture comprising means for supporting a plurality of lamps,

an annular conducting member having a terminal connection for one of the main feed wires, and a plurality of terminal connections, one for each of the lamps, a second annular conducting member having a terminal connection for the other main feed wire, and a plurality of terminal connections, one

10 for each of the lamps, and a.plurality of slwitehes, one located in each individual lamp circuit.

In witness whereof, l have lhereunto subscribed my name in the presence of two witnesses.

REUBEN B. BENJAMlN.

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