US1062809A - Electric-arc lamp. - Google Patents

Description

ARTHUR GEORGE WAY, or LONDON, ENGLAND.

EtEo'rniO-ARC LAMP.

To all whom t 'may conce/Mt:

Be it known that I, ARTHUR GEORGE Vilar, subjecty of the King of England, residingat London, in-England, have invented certain `new and usefull Improvements. in

Electric''Arc Lamps, of which the following l.is a spec'ication..

This -invention' relates to electric arc lamps of the type usedin lanterns, projectors andA the like.: Such arc lampsv hitherto 'have' either been of ,the open type'withcarbons inclined'at an angle to each other, or of the'in closed type with 'cai-bons in a. vertical line.- .Eatih of these types has' disadvantages, 'the open form. consuming the carbons very rapidly. and thus, if hand-regulated, requiring 'constant attent-ion, and the closed forni wit-hverticall carbons being unsuitable for use with standardlanterne o-r apparatus on ac# count of the large amount ofl headlrooin required and .alsocaiising considerable loss of l v illumination owing to the crater of the carbons being'in the wrong direction. A further disadvantage of the' open type is that thegarc is'eiitir'ely'unprotected. andlikely to cause lire.

'The present invention embodies various .improved constructional features, one being that the are is practically inclosed although the carbons are at right angles to each other, one of the4 lcar'loons being .substantially horizontal and 'passing through an opening inade Vto receive it in theinclosing .cover or casing ort Aglass or other transparent material; An-

' other lfeature is the arrangein'entfor feeding this horizontal carbon by nieans of a ring clutch operatedbv a hand lever. v

rlhe invention also includes other details of construction.hereinafter described and. shown in the acdornpanying drawings, i-n.

which- Figure l is a side elevation, and Fig. 2 is a plan of one construction of lantern or projector arcl lanip according to this invention. .Upon a tray or base .A adapted to t into the 4lantern or projector, is a plate or table -B haring lugs B1 which are engaged by pivot projectors. The front end ofthe plate B is. furnished with lugs B2 and to each oitheser' is* pivoted a link D, the other ends of/thev ,Specification of Letters Patent.

Patented May 2'?, 1913.

Applieation tiled April l, -1911. Serial No. 6 1'-8,333.

.links being pivotally connected to a'y'o'ke E which` can 'be made -to slide backward. andforward along the base A4 by the rotationfo'f a screw Ffurnished with a milled head F1.'-

lThe frontendv of this' screw is held in alug A? forming part of the base A and it passes through atapped hole lin the yoke E. Thus',

by turning the milled head Fil, the yoke E is forced one way or the other along the screw F, the angular'posit-ion. ofthe-links D is.

'alteredl land the front end of theplate Yraised or'lowred..y Thismotion is for purposes of adjustment after'the initial position for'height has been determined by the -piv otsC.

l-Pivoted as'at G tothe plate B is acarrier *platexH having an extension H1 furnished with alug H2. through which passes a cross traverse screw J. This screw is mounted in bearings in'I lugs B3 on the'plateBand is' provided 'with awheel'or disk H3 by means 'of which it can -be turned. This rotary 'motion of'the screw J turns the plate H' about its center "at G.

' Secured to thefplate H', but insulated trein it, is a circular plate K flanged to receive a cylindrical casing L of glass or other transparent inaterial which is provided at its upper end with ya cover L1. The plate K is furnished witha downwardy extending boss or-stein K1 which passes through a hole in the carrier plate H and is boredto take a sliding carrier or liolderfor'the bottoni yca rbon lvl. g This carrier' is not shown in the drawings but' it may be of any convenient forni and it is'provided with a rack operated by-a pinion M1 at the end of a spindle lv'l? having a milled head lvl. The rotation of the spindle M2 'will thus cause the lower car-l bon M to be raised and lowered in the usual way.

As will be seen from Fig. 1, the upper carbon N issubstantially horizontal, that is. at right angles to the lower vertical carbon M.' It passes through holes made to large enough to allow the vcarloon N to slide through it lwhen the clutch plate is prac# yti'cally at right angles to the carbon.- Pivoted tothe bracket l? is a lever .S having a vhandle S1 and positioned so thatit acts upon mpejectee er eil' mi the elueh plaie E. Thus-1f the handle S1 be mused. "elle clutch f u q 7" 1 'plate R lsirst shghy eee-Keel se me is 'Upon the release ef the lever handle S15 'the lsg'ning/ll Causes the elu'ch plaie again t' assume its norm-al position Arelellxv'elgzf 'te `the carbon N, and carries it beck ove? the carbon to lts postlon of rest es shown In 'eylinler L and p'efemblyts que closely other purposes requ'ngestongly eetn 1 .Vase

light,v the'lnlet 'llmay, be closed s0 {sheipra'ctlcally nomi' is acl'mlted Wltlqm the cylln order te control are -m the well known wey, ajn elee-emagnetll 1s tecl to the cerner plete 'El and -may be veormeeecl in series With-ehe carbone.

A permenenbmagnet may .be *used for this purpose mstead of ythe eleetromagnes shown.

x The arra-ngement of the -hanel-epereefl clutch' for feeding the horizont-al carbn is of material advantage o'rila-ntern and ple jectr 'Work as e :considerable 'saving 4of lengt-l1 is e'eeteol compared with thev space occupied by a rack and pinion.

in smaller lamps she inclosing cylinder L Vme? be placed eccentfically Wli regard@ v the. lowereebon M m order *lo prevent undue heang 'or clepest 01E- carbon clust in flee du'ectlon oi 'elle projectlon vof the mfc.v Fue-- -'t`-her,j1'n sueli small forzrns,l the meelleeism fel' raising and, lowering the lamp' and fee -t'urning it slightly,l may be "simplied. Fm

example, heplat'e B 'bearing thelemp malghe:

be mounted-se es io sll'eup end' 'flown enel A .upglls time e insurable, e elmell plate, suppored en end -e seeendeerben bet-Ween seidupright, e lever fulcrumecl below the seeving acleped te' the direction of the 'plaie n; y

3.Tl1e eemfomalou mn Meeus O' :L .L p

the Character elesefbeel, ef e, besei e liable -Va-eying the 'Melina-m 'means for illus 2m Leeeeee turn beevefll'eel piller' in elle menne? usuel Wbpmjeeen lamps.

Y'Vlm; l el es my invention mil .desire Jae secure ley Melese Paten@ is l. le an eleere efe lmnp, she Combine tien of e re. AWely eelonay upright ce1, ben; e cesmg surrelmdmg smal carbon, e.l

seeend eearbee exendng through en epeetue in the s iale. Wall ef *alle easing, means for suppor'ng the Segond cereale arranged eutslele of 'L/lle casing and eenwesing ltwo which ille carbon is freely and enel. actuele Clutch l 1e-ie ie :Se-eel' "elle carbon .into Ahe casingg and e celecl spring surseeen eezbon and engegmg 4 rounding the supper? 1011 sind.A ea'lfben to move the f-2. The com?pq '.eppeetus ef Connecting 'thel mosme" the yoke ef Velle sable? e. eefme" plzue pvot-elly meenteel en 'he te 1 im 1n ving the plete, and en mei.

lin sesbmemy whereof' I have sily neme "te -hls speemeetlen m the 'p ci tive sul-jseibng .'Witnesses,

ARTHUR GEORGE We Witnesses:

TW..- MEACBER,

HERBERT le; ,Gmee

bese, e yoke- 'vsr f the nell'uatlen mfg meuntef on ehe

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