US928189A - Arc-lamp. - Google Patents

Description

R. FLEMING & C. A. BLHALVORSNrJR.

ARC LAMP.

APPLICATION FILED JAN. 16", 1906.

Patented Ju1y13,1909. y

2 SHEETS--SHHET l.

Inventors; Richard Fleming, Cromwell A B. Halvorson Jr f. Richard Flemin Cromwell A B. l-lalvoon Jr., M bg R. FLEMING (Y: A. B. HALVRSON. JR. ARG LAMP.

APPLIUATION FILED 11.16, 190e.

928,189. Patented Ju1y13,19n9.

2 SHEETS-SHEET 2.

Wtnes ses: Inventors:

UNITED sra-raras Prnnr ormon.

RICHARD FLEMING AND onoMwnLL A. B. IIALvoRsoN, or LYNN, nnssxcnusr'rrs,

' AssIoNons To VGENERAL ELECTRIC COMPANY, `A conroItArIoN-or New YORK.

ARc-LAMP.

Nojeasnse.

Specification of Letters Patent. v Application led January 16,1906. Serial No. 296,303.

Patentes July 13,1909.

To ad whom 'it may conce/m: l

Beit known that we, RICHARD FLEMING and CROMWELLA. B. HALVoRsoN, Jr.,citi Zeus of the United States, residing at Lynn, county of Essex, State ot'. Massachusetts, have invented certain new and 'useful Improvements intArc-Lamps,v of which the following isa specification. y

Our present invention relates to arc lamps and comprises certain improvements in t e electrode feedingniechanism of such lamps. These improvements are intended to producean arc .of constant.` length and in fixed relation to the arc lamp structure at each feedlng operation in thevparticular embodiment of our Invention disclosed.

Uur invention'also comprises features of construction and arrangement 4particularly fumeswhich requirelspecial 'provision for their disposal. f

The various features ofv novelty which characterize our invention are pointed out i with particular-ity in the claims -annexed to andforming,r a part ofxthis specification.

For a betterunderstandlng of our Invention: and for the advantages possessed by 1t reference may be had to the accoI'npanyingv drawings and d'escri tive matter lin which we lhave ustrated an described some of the forms In which vour Invention maybe /em- 1 bodied. f

Of the drawings, Figure 1 is a perspective View of an arc lamp with casmganr globe broken away and in 'sectiong'Fig 2'is a sectional elevation illustrating the lamp ventilation and the arrangementl of the upper electrodepFig. 3 is an inverted )lan showing the lower end of the lower electrode and nozzle surrounding mechanism; Fig. 4 is a perspective view-of a portion of an arc lamp' illustrating a. modifiedY electrode feeding mechanism; and Fig. 5 is 'a perspective view `illustrating-'the clutch mechamsmused in the lampfshown in Fig.' 1.

In the construction disclosed in Figs. 1V andv 2 an arc lamp is shown in whichV the back-y bone of.. the arc lam `frame-work is formed by "a draft tube or c imneymember 1. To

the member 1 at a short distance-below its upper Iend is secured a hood 2. To the ex- .treme upper endof thechimneyxmember 1 or an extension thereof, is secured a carrier member 3 froin'the upper side ol' which may extend members 4 through which the lamp is suspended.- lnxthe construction shown, the lower end of the chimney member 1 is in threaded eno'agement vwith a hell-shaped fume box or lhood memberl 5; The member 5 is provided with an annular flange portion 6 which forms the lower platform of the -arc lamp. From the conical portion of the member 5 belowthe platform 6 extend two boxlike chambered portions or pockets 7'V open at their .upper ends diametrically opposed to each other with respect to the axis :of the member 5.

Openings are formed in the' adjacent inner Awalls of the member 7A into which project the- As shown, thev ends of a hollow member 8. member 8 is separated from the o'rton 7 by insulation and is hold in placey means of plates 9 secured to the lower ends ot' the portion 'Ybysc'revvs` 10."l The member S is .formed with a tubulabo's's 11 projecting from its upper side and coaxial with the The lower end of n.' tube-like member 12 is seclred in the boss `1.1 The lower end of the upper electrode 13 of.v

chimney member 1.

the lamp projects from the lower end of the member 12 which serves as a shield or recep-l is connected a horizonta portion or `diavphragm 20, 1s suitably secured mtho boss 1S.

A central aperture 21 is formedv in the portion 20 through which thelower end of the electrode 13 projects. vA series of apertures 22 are also formed inthe portion 20 surround-v ing the aperture 21. Tithin the caplilge member and preferably separated from itby insulation 23 is secured an annular member 24; which islprovid'ed with an inwardly extending proj ection-25 forming'- a sto for li1niting the upward movement of tie lower electrode in a manner hereinafter described,

A' flexib le conductor and t rough an insulating guide 31 secured for the pur ose in an opening in the plat- 'form 6.

is connected` the electrode is gripped between the projections 27. When,

an Vupward pullxis exerted uponv the member e lever 26 is tilted so that the upper electrode-'is released and is free to move downward under the action of gravity. Nut

32 threaded on the rod 30 engages the und er side of the guide 31 to limit the upward 1 movement of the member 30.

The lower electrode 33 which in the worl-V ing. osition ofthe lamp shown in Fig. 2 is in alinement'wit-hthe electrode 13, is supaxia ported in a socket formed in a bracket'arm 34 carried at the lower end of a hollow barlike member 35 which is rectangular in crosssectional outline. The member 35 slides through a tubular member 36 secured to theplatform 6 extending down through an open- -ing formed forthe purpose in the lconical I portionof the member 5, and slidesupon a member 37 secured to the framework of the Y lamp in any suitable manner. The member `tween the 35 1s engaged by two clutches located belatform 6 and the hood 2. The lower clutcli in the formv shown in Figs. land 5 of the drawings comprises a bar-like member 3'8 provided with an aperture 39 at one end throughwhich the member 35 extends.

j opening 39 to lock 'the members 35 and 38V The member 38 is so' arranged that when its` fend opposite to that containing the a erture 39 is raised,' the member 35 is crampe in the together. The end of the member 38 remote from the member 35 is pivoted to the lower end, of a link-like member 40. The upper end of the member 40 is pivotally connected toa link-like member 41 to the other end of which is pivotally connected a member 42 provided with an aperture '43 through `which the member 35 passes. 4The member 41 is formed with an aperture'between its ends and adjacent the member 42 through which loosely passes a rod'44. -The rod 44 has secured to 1t a'fulcrum member 45 which 0- engages the underside of the member 41. 6

When the. rod 44 is pulled upward and the adjacent end of the member 42 correspondingly raised the member 35 is cramped 1n the opening 43, thus locking the members 35 and 42 together.

The member44 is extended to pass through en' the member 30 does not hold up the end of the member 26 to which it owever,

member 38.. Adjustably secured to the member 45 by means of screws 47 is a hook shaped member 48. The hook portion of the member 48 extends through a slot 49 ina clined portion. The member 38 is provided with anaperture through which t e'upper end of the clutch operating' member'30 extends. A pair of nuts 51 secured t0 the upperend of the' member 30 serve as a'means by whichthe amount of upward movement of the member 38 necessary to cause the member 30 to be elevated to, release the upper electrode can be adjusted- The-upper endofthe rod-'like member 44 is pivotally connected tota member 52 connected to the underside ofthe U-shaped armature53 by springs 53. The legs-,oli the armature 53 extend into solenoidI coils 54. The movable shell memberv55 of a dash-pot is secured to l the member 52j.' lThe. stationary pistonr I member 56 of the dash-pot is secured to an extension ofthe member 50. l

When the lamp is inl the lout-of-service position the electrodes are in the osition Vshown in Fig. '-2, the lower electro e lbeing supported by the member 38 which inrturn is oft e lamp the upper electrode is gripped between the pins 27. As soon as the lam is connected into the operating circuit armature 53 to be'attracterhthus elevating the member 44. The initialupward movement of themember 44 causes-both clutch members -38 and 42 to grip the member 35, after'which the member- 35 and the lentire clutch mechanism moves upwardwithv the member 44 until the upward movement of A fterthe upward movement of thepmem'ber 38 is checked by the member30 through the nuts 32 and 51 further upward movement of the member .44 causes the member 42 -totilt about' the fulcrum block 45 causing a further upward movement of the member 35 which is then moved through the aperture 39. As

tion of the member 48 moves out ofthe lower the vertical portion of the slot. This moveber 45 and-thereby of .the lower end-'of the anism turns the member 35 about the rod- 37 as an axis.- This results. in vthrou'ulng the lower electrode from a osition in'alinement --with the upper electro e to the position indicatedby the dotted line in Fig. 3. The u ward movement of the member 35 is c ecked by the engagement ofthe upper end of the electrode 38 with the projection 25.

slotted member 50 secured -to the chimney. member l. As shownfthe slot 49 comprises an upper vertical'portion and a lower msupported by the platel 50. In this condition' the coils 54 are energized. This' causes the ment Vcauses a lateral movement of the mem-` an opening formed for the purpose iny the l the member 38 is checked by the member 30.

the member 45 moves upwardthehook porend of the inclined portion ofthe slot 49 into member 44 which through the clutch mech- The position of the clutch mechanism at this i instant is shown in Figs. I an`df5. i At or usually slightly before the instant at. which the electrode 33 engages the projection 25 the member 30 is raised by the member. 38 sufficiently to release the upper electrode.which drops into engagement withone'side of the upper end of the lower electrode. As soonv as current begins to fiow through the electrodes, the coils 54 .are automatically deenergized in any suitable' manner -and the member 35 andfelectrode 33 begin to descend under the action of gravity. The dash- pot members 55 and 56 are arranged'to cop'erate to retard "the downward movement of the electrode .33 4without im edin the upward movement of the electro e, r[gh movement of the member A435, is checked by the engagement of the lower clutch member 3,8 with themember 50. As the member 45 descends the coperating cams formed by the member 48 and the walls ofthe slotl 49 causes the electrode 33 to fbe swung back Minto axial Valinement with thefelectrodel] .The clutch mechanism .is so arranged that when the coils 54 are denergiz'ed and the lamp is in its normal running or .operative condition, as well asin its outof-'service con dtionflthe' projection' 42v yof the member 42 rests on' the member 38. f f

It will be understood that the movement of the member 35 through the clutch member 38 at each feeding operation is greatl cess in plate 50,and the stop for the upward movement is constituted by the nuts 32 and '51 on'rod 30. soon as the member 38 starts to descend the member 30 is released, whereupon the electrde 13 is again grip ed -between the projections 27 t themem` er 2 6, As a result after each feeding opera-V tion the lower end yof the upper electrode,

` projects through the diaphragm 19 a--fixed distance as shown in Fig. 2 by dotted lines.

The 1am mechanism between the hood 2 and plat orm 6 is inclosed by a casing 57 which may be" of any suitable lconstruction.

,An annular rmember 58 is secured "to fthe lower end of the member 5 of which'it forms' an extension. The member 58-in turn supports in any suitable manner' a transparent or translucent. globe 59.

Inoper-ation, the heat of the arc causes a rapid ow of airjup through the chimney 1.

The air carried out of the chimney 1 in this manner is replaced by air entering through the members 7 and 8. The air entering in e downwardV this manner passes down through the nozzle formed by the apertures 22 to .form atubular body of air surrounding the upper end ofthe arc and s erving'to steady the arc and to keep-down the temperature yof the 'upper Under these conditions an' u electrode. Ward current of air is also produced from t e bottoni and the si'des` of the globe, which current causes thedowerend 'of the are. to..v

, besjurrounded by an upwardly moving shell "The air circulationA thus provided'serves'to steady thearcas well `as to lcarry'out of thearc lamp" strucor tubular mass of air.

ture'any fumes or smoke which'may'resultl from the consumptionof the electrodes.

Theparticular lamprmechanisrn disclosed is intended for operation in the alternatingcurrent circuit. Underthese circumstances we haveobtained excellent results by malring the upper'electrode of the lamp of ordinary carbon land byforming the.y lower' electrode b principally 'ori entirely 'of titanium car- In the modification ofour invention shown` in Fig. 4 the member 35' is engaged by an.

'upper clutch member 42 which is connected to the feeding mallet. The lower clutch member 38 is normally "held in the position in` whilc'hiitis lock-ed to the member 35 by Aa long` helical spring` 60. yThe member .38J is provided'with an aperture 61 through which extends a post' 62 adjustably secured to the laml frame-work.'v Thepost-62 Ais inclinedv to t e line `of movement of the me'mber3`5. Consequently as the member 35is moved upward by means 'offl the clutch. 42'," it is' ro-y tated by reason of thel engagement. .of the member'l with the aperture 61,'thus moving' the'lowerv lelectrode out of jalinemelrt with'the upper electrode. -In this construction, as shown, the up er end of' the lmember 6 2 'is provided` with which serves as a stopte limit v the upward movement of the clutch member 38", vSimi- V .1*10.

'mg the downwardV movement ofthe clutch.

In-this form of. our invention the' larly, washers 64 may ,serve as stops limitan .enlargement 6 3v f length of the arc struck' at each feedingy op eration is the lay of the member 38 be- 'tween the enlliirgement `r63 Jandthe top washer 64..-

.. While the'forms of our inventionl herein-'i4 before described have been foundfto give excellent results inV ractice it 'will be readily understood byfal those v'skilled in the art that changes may 'be .madeinthe forms of .our invention without de arting. from its sptirit, and we do notwish 'tl e claimshereinl a er madeito be limited to the particular constructions described and illustrated more than is made necessary by thestate of the art.

'1.' In an arclamp, an electrode, a stop ad- What we claim as new and'desire tosecure by Letters Patent of the United States, is,+

ljacent the -arcing end of said electrode but out of line therewith, a second electrode normall-y in line with the first-mentioned electrede, and means for rmoving said second electrode toward the iirst-menti'oned electrode and also laterally lso as to bring it into engagementwith said stop and the first-4 mentioned electrode.l

2. In an are lamp,fthe combination of two electrodes normally-in-axial alinement with" e'a'ch other," and `means for moving one of said electrodes toward thel other and laterallyv with yrespect to the axis of. the other elecl trodej.-

electrodes normally in axial alinement with veach other, and means for movingY one-of 3. e In an are lamp, the combination of two said electrodes"simultaneously toward the other and laterally with respect to its own axis. l v

l 4. In an arc lamp, anelectrode, Va support for the same, vand means for moving the support parallelto theaxis ofy the electrode and v about another axis parallel to thatof the 2,5f'electrode.

5. In an 'arc lamp, a movable electrode, a

moving it toward the first-mentioned electrode and .laterally into engagement with' ysaid stop.

6. In an arc-lamp, an'upperA electrode, a shield or guard surrounding its lower and arcing end and provided with a sto adjacent the arcing end .of said electrode )ut out ofv contact therewithmeans normally7 holding the u per electrode in iixed relation tofsaid vshiel a lower electrode, means for moving said lower` electrode toward the upper electrode and laterally into position to `engage r said ystop and to be engaged'by the upper electrode, and meansfor causing said upper electrode to be released at or about the instant at which the lower-electrode engages said stop whereby an engagement between the two electrodes occurs while the lower electrode is vin engagement with the stop.

7. In an are lamp; an electrode'from which an arc normally axially extends, a movable electrode-carrying member, a clutch engaging said member'for moving it parallel to the axis of the electrode, and means for moving said clutch laterally to thereby turn said member rotatively about an axis onset from but parallel to that of the electrode.

8'. In an are lamp, a chimney, a hood car-` ried at the lower end of the chimney, a nozzle carried -by` the hood in line with the axis of the chimney, an electrode projecting through said nozzle and extending into said chimney,

a conduit for .conveying air from outside said hood to said nozzle'7 and means extending through' saidl conduit" for controlling the movement ofthe electrode passing Vthrough said nozzle.

9.. In an arc lampl a chimney, a hood supported at the lower end thereof, an annular member supported bythe hood With'its axis in line with the axis oi sald chimney, a conduit establishing' communication between the space outside of said hood and the 1nterior of said annular member, `and a perforated diaphragm located in andinsulated from said annular member.

Y 10 In anare lamp, -an electrode, a movable electrode-carrying member whose axis is parallel to but offset-from that ofthe electrode, a clutch -for moving the memberin a direction, parallel to its length, and means 'chambered mem-ber establishing communica-v tien between said pockets, an electrode, one lend of whichextends transversely through .said chambered member, a clutch member located? in said chambered member, and an operating device therefor extending into one of said pockets.-

12. In an 'arc lamp, a pair of electrodes normally. in axial alinement withv each other, and means for automatically moving said electrodes simultaneously in the lines of *their axes and one of them laterally thereto.

In witness whereof, we have hereunt-o set our hands this second day of January, 1906. RICHARD FLEMINWG.'

CROMWELII A. B. HALVORSON, .IIL

lVitncsses:

loi-,1N A. McManus, Jr., HENRYTQ...WESTENDARR

Images