US280337A - Incandescent electric lamp - Google Patents

Description

( NO Model.)

R. H. s. THOMPSON; ING ANDESG'ENT ELECTRIC LAMP.

' No. 280,331. Patented June 26, 1883.

mines; flz.fl v $4M ra M flu/en for g m x4 PATENT OFFICE.

RICHARD H.,s. THOMPSON,

or LEXINGTON, AssIGNoHOF ONE-HALF To PHILIP B. THOMPSON, JR.,'. or HARRODSBURQIKENTUOKY.

INCAN'DESCENT ELECTRIC LAMP.

s'rncri rcs'rron forming part of Letters Patent1Io. 280,8 37, dated June as. 1583.

Application filed March 14,1883. (No'modeL) Ia aM-whom it "my concern.- Be it known that I, RICHARD S. I song-a citizen -of the United States, residing at Lexington,-. in the county of Fayette and State 5- of Kentucky, have invented a 'new'and useful lncandescentElectric Light, 'of whichthe'following is a specification. v

Myinventio'n relatesto improvements in in candescent electric lights, whether inclosed in .10 a vacuum or not, andthe objects of my improvement are, first, to provide a means of regulating the light, increasing or diminish- 1 'ing it without changing its character; second,

to save electricity in' proportion to the diminution of the light; and, third, when-the light is in vacuo, to have the mechanical movements which accomplish the above result also in the vacuum and their control outside.

.taiu these objects by mechanism equivalent to thatsillustrated in the accompanying drawingsiin which;-, p g I Figure 1 is a view of the lamp ready to be. placed in its' stand, Fig. 2 is a vertical section of the-stand; and Fig. 3, a side viewof the incandescent strip or loop, one of the. electrodes, and the ratchet-bar. Fig. 4 isa view of the switch when turned to theiright and the connections then made; Fig. 5,'a viewof the same when turned to the jleit, and'liig, 6 a

'crossrsection of switch.

Similarletters refer tosimilar parts through- .Out the several views. The incandescent loop A, the electrodes B, the mtchet-b ar C, supporting the non-con- 5' ducting strip 1:, to which the incandescent 1 loop-A is attached, andthe eleetromotor 1), constitute the working part of the lamp proper.

The frame E, the binding-screws a a, the contact springs b b 'b, and-the rotating switch 0 d, together with theconductorse e, constitute the stand. or receptacle for the lamp. .The

' cock h serves to turn the switch d.

Upon the lower part of the stem of the globe containingthe light are three metal rings,

f l lf 'f, of which f and f are connected with e two electrodes'B and B".byconductingwires,.-which are sealed ..'in the glass; The 'thirdring,"f', is connected by anotherwire,

also sealed inthe glass, with one of the brushes, 9, of t the commutator :of the electroihotonf Whenthe lamp'is placed'in' the socket of the g stand, the'three ringsf THQM1?-.

':f come n cont-act 'with the springs b b b and'form a circuit for the electric current. The electrodes B B are formed of springbrass orlother suitable'material, and a'rebent in such' a, shape as'to form good contact with each side of each arm of the incandescent loop.A. I p

With the switch (Z'in the position shown in Fig. 2, the current, entering through thebind= dug-post a, passes directly, by way of the con:

ductor e, the spring b, the ring f to the electrode B, thence through the loop A to the electrode B, 'aud'by way of the spring b and conductor-e to the binding-post -'a andthence to its source; SVheu the switch dis turned to the-right by means of the cock h, the current, entering as before, and passing through e, divides, one, portion passing to "the spring b, 7o 'thence tot-he brush of the commutator oppo--. site 9', (the one shownin the drawings, Fig. 1,) thence-through the wire ofthe rotating arrna tnre" to the bru'shg, which has. metallic con- I'nection with the electrode B, at 'which point the divided current reunites and' passes through the electrode 13, the loop A, through the elec- 'trode'B, and tlrence bywayof the ringf, the spring b, and the conductor e to; the hind .i'ng -.post a, and thence to its source. I The passage of thecurrent around the armature causes it to rotate,-and'by means of the pinion- .wheel tp-and the ratchet-bar Othe incandes Gent loop A is drawn down 'betweenthe lips 'of the electrodes B and B, thus diminishing the amount of the incandescent surface as nuch as may be'desired,-'whe1 1.the co'ck is'turned so. as to bring the switch in the position shownin the drawings, Rig. 2.! When it is desired to increase the light again, the switch. iSjJillllBd. to the left, in whichthe current, entering asbefore, passes frorn the conductor e to the spring b, thence'tothe electrode B, through the loop- A and the'electrode Bto its base, where 'it divides, one portion passing to the brush'g, thence around the armature to the brush'g and its connection to spring b and-f the conductor'ia, where it reunites with the other port tion,'whichhas passed from the electrode B to the; ring f and the, springb to thezsameconductor, whence the reunited'current passes out 'bythe-binding-post a to its source. This re;

veieal of the direction of the-current ereund the armatme causes it to revolve in the ogposite directiqn to the 'i'ormer; ca'ee; raising the incandescent Map; A through the lipe of the s eleetrbde's ae war as may be desired, when the cock is tufned so as to bring the switeh in the positibn shown 'in Fig.

It i'sevidentthat varieeemeens maybe adopt ifja s biexleid is'usedasthe'motor, no eliange i8 151mm; It is al a evident that when mere meehameal means amused-for moving the reteheHear a y or flown, of the I eieetmmetor', ell itsjoennecti'on's outside theetem of the globe 2o musftbe preperly SeaIeeL-eo as te' peeeerye the vaeim-m in'the globe 'W'h'at I claim asmy invention, endvde'sire to aware by Lett rs mane, "it;

'1'. The cmiibmatieln in" an; incmfiescent 25 lamp tif eleetrofies heving-geefi but ings 011 contact with eech-side of the inwndescent strip or 1o0jp,jwith suitable mechanifim for changing the pointsoi eontmtlbetween the electrodes and the strip or 10012 A, snbsten'w tially as and for the purpoeefieeeribefi, e 2. The combinetien, in an inee-nfieeeent lamp; of springeieeti ndes whose Rips mm tact with each side of the inee-neeeent etaip or 100;) A, withe ratchet-8m '01 lent, and an electrometer for meiring eaiii, 5 eaqdesee'nt stripup anti down between the iipg I of the electrodes B and B, substantially as and for the purpose set forth! 3.. The combination, i

21.; anineende'seenttrodes bearing upon e'eidieopfor strip, findfliiku electrognotor for moving said electrbd es, with a switeh and suitable eennections; whereby the eurrentmey be sent through the-leap or; strip, 01' through'both the Keep e1 'eti'ip and- 5 the motor, substantieilyas describw." t

4 RIOHA'RDH; Sq THOM$OBL Witnesses: v

- P IL; B. Tmmeeei J12,

' Tnos. G. INGRAM.

-- lamp of the1oep-0r strip,'the-mevaigle eiee- 4Q

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