US1083658A - Electric-arc lamp. - Google Patents

Description

H. H. BoNEY. BLBGTRIG ARC LAMP.

APPLICATION FILED SEPT. 20, 1911. 1,083,658, I 4 Patented Jan.,6,1914

-4 SHEETS-SHEET 1.

H.H. BONEY.

'ELECTRIC ABC LAMP.

APPLIGATIONHLBD SEPT. go, 1911.

Patented Jan. 6, 1914.

4 SHEETS-SHEET 2.

jig/Umm H. H. BONEY.

ELECTRIC ARG LAMP.

APPLICATION FILED SEPT. zo, 1911.

' 1,083,658. Patented 1311.111914.

Agar/111614945( if. a?, V l wk 4 SHEETS-SHEET 3.I

, H. H. BDNEY. ELECTRIC ARG LAMP.

APPLICATION FILED SEPT. 20, 1911.

Patented J an. 6, 1914.

4 SHEETS-SHEET 4 Bierman foney,

f3. @a-VZW@ HERMAN n. Borrar, or CHICAGO, ILLINOIS;

ELECTRIC-ARC LAMP.

Specification of Iletters Patent;

Patented Jan. 6, 1914.

Applielt'ion led September 20, 1911. Serial No. 650,418.

T0 all whom 'it may cance'm .'f

f Beit known that 1,--HE11MAN BONEY, a citizen of the' United-States, residing at the city of Chicago, county of Cook, and State of Illinois, have invented cert-ain new and useful Improvements in'Electric-Arc' Lamps, of which the following is a specification.

My invention relates to improvements in electric arc lamps, the object being to produce a lamp of this character which is capable of automatic adjustment to compensate for the burning of the cai-bons thereof, and to effect suchl adjustment by a simple and eicient mechanism. l

A further object of m invention is to provide automatic means or'replacement of the carbons of the lampafter the same have been burned out.

Other objects will't appear'hereinafter. With these objectsin view, my invention consists in thel combinations and arrangements of parts hereinafter describedt and claimed. 1

My invention' will bel best understood by reference to the accompanying drawings forming a part of this specification and' in which,

Figure 1 is a side elevation of an electric arc lampembodying my invention, Fig. 2 is a rear elevation showing. mechanism for automatically feeding' the adjustable carbon of the lamp, Figs. 3 and 4 are respectively side and front elevations of said mechanism, Fig. 5 is an enlarged vertical section taken on line :vfof F ig. 4, Fig. 6 is a vertical 'transverse section taken on line y-y of Fig.

1, Fig. 7 is an enlal ed horizont-al section taken on line .2f-z of ig. 1, and Figs. 8 and 9 are views part in elevation andv art in section,` illustrating the mechanism or feeding carbons from' the magazineinto the carbon holder.

The preferred form of construction as illustrated in the accompanying drawings comprises an adjustable carbon electrode'l which is slidabl mounted in af vertically movable carbon older or'tube 2, the latter having a flaring ori bell-mouthed opening 3 at its upper extremity, as clearly illustrated in Fig. 4. In Fig. 1 the lower or copper electrode is shown which is arran d in axial alinement with and directly beoew the carbon electrode 1. In order to. control the automatic adjustabilty or feeding of the carbon 'electrode 1 during the burning of the lower end thereof, a solenoid 5 is provided in which a vertically aing a guide slot 13I ormed therein. a: statlonary housing 13 are'mounted two .also vertically movable.

.gize'd by the passa vertically movable core 6 directed by a guide v6 operates, as clearly indicated in Fig. l.

rEhe elevated osition of the core 6 is somewhat above e body of the solenoid 5; as indicatedl by dotted lines but the ma etism produced by the latter when energize' draws said' core downwardly. Extending downwardly fromthe'core 6 and formed integral therewith is an axial stem 7 to the lower end' of which is pivoted 'an oscillatory lever 8 which' 1s fulcrumed'as at 9 to the main support or frame 10 or lthe lamp. The' other end of the lever 8 or the end thereof opposite stem 7 is pivoted to a vertically extendin rod 11 the upper end of which is pivot to a bifurcated lug 12 carried by a movable late 13 the latter hav- Within compression helical springs 14 and 15, the former' acting on a vertically movable sleeve 16 passing through the lower end of the housing 13 to retain the core 6 in an elevated positiony through the intervening connection, and the latter on a rod 17 which is The sleeve 16 carries a eur-ved horizontal bar 18 at its lower end towhich is pivoteda vertically disposed link 18', the lower endof the latter being pivoted-to the free end of 'a clutch lever 19. The pointed or clutch-end 19 of the clutch lever 19' is adapted to impinge the peripheral surface of the carbon electrode 1 when the sleeve 16 is moved upwardly' against the resistance of the' spring 14. A rigid connection is formed betweenthe' sleeve 16 and plate 13. by means of a screw 20 reciprocat- '1ngin'a-slot20 formed in the housing 13",

and a second screw 21 secured in the housing 13 coperates with the slot 13 in guiding' the plate 13 during the vertical reciprocations thereof. From this construction it is seen that when the solenoid 5 is enerof anelectric current therethrou h that t e stem 7' will be moved downward y and that the rod 1 1 will be pushed upwardly by the action of the lever 8.y The iirst result of this actionis to'r'aise the sleeve 16' through the medium of the plate'land the screw 20 for effecting' the oscillation of the lever 19 which thereupon clutches the carbon electrode' 1. Further upward movement of the rod. 11 and sleeve 16 causes the tube 2 to moveA upwardly, the consequence being that a gap is formed between the electrodes for` creating the arc los therebetween; The function of the spring 15 which acts upon an enlargement 15 formed on the rod 17 is to create a slight resistance to the upward movement of the tube 2 in order to assure that the clutching point 19 of the lever'19 will securely clutch the carbon and not slip thereon. After the carbon has been clutched the action of the solenoid 5 is such that Athe rod 11 will continue to move upwardly and also the sleeve 16 and tube 2 as aforesaid. An arm 2 projects laterally from the tube 2 and is formed integral with the rod` 17, hence when said tube is moved upwardly the helical spring 15 is compressed, thus creating a resistance to said upward movement. Further resistance to the upward movement of the holder or tube 2 is caused by the sprin 14 which acts upon the upper extremity o the sleeve 16, the latter being at this time in rigid connection with said tube through the medium ofthe link 18 and clutch lever 19. The holder 2 will continue to move upwardlyfor increasing the arc gap until the resistance of the springs 14 and 15 equals the force ex erted by the solenoid 5. As the arc gap is increased, greater resistance is brought into the electric circuit and the strength of the solenoid thereby reduced, allowing the carbon electrodes to be lowered. However, the

burning end of suchcarbon will be consumed faster than it is fed downwardly and when the are gap is so increased by such burning that the pressure of the electric current is insufficient to maintain the arc, the electric circuit will be broken and the solenoid denergized. The clutch 19 will now cease to a'ct on the carbon electrode l, whereuponthe latter will fall into contact with the lower electrode 4, thus closing the cir.- cuit., Simultaneously with the closing of the circuit the solenoid 5 will resume its action" on the parts connected therewith.

In order to adjust thehelicalsprings 14 and 15 an adjusting screw 17. is provided at the upper end of the housing 13, the lower; end of said screw abuttingthe upper ends of said springs. Extending laterally from the lower end of the housing 13" and formed integral therewith is a horizontal v.arm` 18". This arm is provided with an opening in which the holder or tube 2 is adapted to reciprocate freely as shownfin Fig. 4. Screwed into the extremity of the arm 18 is a vertical screw 20 having a head 20 at the lower end thereof. ing upon the head 20 is a .perforatedlug 2, which extends laterally from the holder or tube 2 as shown in Fig. 4. In this manner the downward movement-of the tube 2j being is limited, any desired adjustment effected by turning the head 20,.

From the foregoingdescription the eneral construction of the automatic fee ing Restgranged as-to feed the carbon therefrom automatically into operative position in case of the burning outof a preceding carbon. In this manner no appreciable interruption to the operation of the lamp during the life of the carbons is permitted. The magazine 22 containing the carbons is arranged somewhat above the flaring mouth 3 and the construction ofthe same is such that when the top of the carbon electrode 1 within the tube or holder 2 is below the level of the mouth 3` the next carbon electrode will be pushed automatically into position thereabove or in alinement with the carbon electrode l. This magazine and the automatic means for replacing the carbons will be described hereinaft'er.

The frame 1()v is mounted upon a stud 23 formed integrally with a base 24 in such a manner as to be angularly adjustable thereon, there being a stud screw 25 for effecting any desired adjustment. A reflector 26 is provided and mounted adjacent the lamp as shown in, Fig. 1. In order to render the lamp vertically adjustableto bring the arc of the lamp in the same horizontal plane as the focus of the reiector 26 a set screw 27 and a lock nt 28 is provided, said set-screw are screwed to the magazine as shown in Fig. 4, and interposed between. the same and the side of the ma azine are circular insulating blocks 30, w ereby said magazine is electrically separated from the carbon feeding`mechanism. The housing 13 is. held rigidly in position by means oftheup-Q wardlv extending curved arm of the frame 10 as shown in Figs. 1 and 4, said arm being formed integral or soldered to said housing. Since the magazine 22 is rigidly secured to the housing 13.I this also is stationary and immovable.

The carbons 1 are arranged in the magazine 22 as shown in Fig. l, there being a leaf spring 31 secured to one side of the magazine and serving to push the carbons into operative position when released by the mechanism to be presently described. The carbons -,l are'retained inthe magazine by means of a latch 32 which is supported by arms 33 and 34 as shown in Figs. 2 and 3.

The latch 32 is secured in `locked position by means of a thumb screw 35 which is tapped into one side of lthe magazine as shown in Fig. 4. A vertically movable carbon retaining member 36 is provided at the upper end of the magazine 22 and is supported by a vertically movable rod 37 which is slidably mounted in a cylinder 38,. At the lower end of therod 37 asmall piston 39 is provided which is adapted to reciprocate freely in the cylinder 38, there being a helical compression spring 40 interposed between said piston and the upper end of the cylinder 38 for creating'a resistance `to the upward movenient of the rod 37 and theretaining member 36, the lower edge of the latter being beveled as shown in Fig. 3. The retaining member 36 normally remains at its lowest-V terminal of movement and the upper end of the lowermost carbon in .themagazine 22 rests against it. When suchl lowermost carbon 1 is fed into the 4carbon holder 2 it is moved from its full line position, in F ig. 8, through its dotted line position 1 in Fig. 8 and its full line position in Fig. 9, passing under the retaining member 36 and to a vertical position indicated by dotted lines l, then dropping intothe carbon holder 2. Should there be a carbon 1 in the holder 2 with its top end substantially in the position indicated in Fig. 9 and the solenoid 5 be energized during the movement of the lowermost carbon 1 from the magazine 22, such carbon would be forced upwardly to a position, such as indicated by the dotted lines 1 in Fig. 9 raising the member 36 and compress- `ing the spring 40. As'soon as such carbon 1s moved downwardly or outwardly the spring 40 will returnthe member 36 to its normal position. Thecarbons 1 contained in the* magazine 22 are preferably insulated from the carbon feedi mechanism and held in' inoperative position by means of a vertically movable releasing catch 41 which is formed lpreferably of insulating material such as liber, vulcanite orithe like. The releasing catch 41 is adapted to slide vertically between two lugs 42 which depend from a carbon chute 43 curved in cross section and in which the points of the carbons rest. AThe upper end of the releasing catch v 41 projects into thechutes 43 and normally abuts the lowest carbon contained within the magazine thus retaining all of the carbons contained therein. The catch 41 is mounted at the upper extremity of a threaded rod 44 which is screwed into the curved bar 18 and adjustably secured therein by means of a locking nut 45. The construction is such that when the solenoid 5 is energized and the bar 18 consequently moved to its elevated position that the point of the catch 41 Awill abut the lowest carbon within the magazine 22 and thus retain the carbonstherein. But

when the solenoid 5 is denergized -long enough for the dash pot 50', through its connecting mechanism, to allow catch 41 to fall to its position indicated in Fig. 9, the lowest carbon within the magazine will be moved 'laterally and downwardly into the holder 2 by its own weight, if the carbonl within the tube 2 has Ibecome burnt out or the u per end thereof depressed below the level o the l in the holder 2 extends above the chute 43, it prevents a new carbon from being fed into said holder 2 regardless of the position'of catch 41. The arc lam-p is so designed that while in use the upper end of the catch 41 lwill reciprocate substantially between its full line position and its dotted line position 41, in Fig. 8, and when the lamp is not in use, the catch 41 will be lowered to its position indicated in Fig. 9. The dash pot 50 preventing, by means of its connecting mechaposition indicated in Fig. 9, until solenoid 5 has been denergized long enough for such action to take place. of the dash-pot 50 causes the catch 41 to be maintained in and between its positions indicated in Fig. 8, while the lamp is in use, and the carbon is being fed downwardly into the holder 2 as it is consumed.

It is apparent that the solenoid 5 is arranged in the lamp circuit, a wire extending support 10, thence through the carbon regulating mechanism, thence across the arc gap, and thence through the lower carbon holder to the other side of the circuit. The lower electrode holder comprises a bracket 46 secured to the support or frame 10 and insulated therefrom .by means of a block 47. To the upper end of the bracket 46-is pivoted a vbell-crank lever 48 one end of which embraces the electrode 4 and the other an edge of a vertically movable locking wedge 49 which is illustrated in detail in Fig. 7. The lower end of thewedge 49 is provided with an adjusting screw 50 for regulating the height of theelectrode 4. In order to insert the electrode 4 the wedge 49 is moved u wardly a short distance which forms asu cient clearance therebetween and the bracket ter the wedge 49 will fall into the Aposition shown in Fig. 1, thus locking the electrode in position. It is clear from this construction that a good electric contact is made, since not only does the bell-crank 48 engage the electrode 4 but one edge of the wedge 49. When the screw 50 is properly adjusted to suit the diameter of the electrode 4, satisfactory results are obtained. In order to retard the action of the stem 7 depending from the core 6 a dash-pot or cylinder 50 is provided, there being a piston 51 operating in chute 43. While the upper end of a carbon from the solenoid to the arm of the lamp nism, the catch 41 from being lowered to its This retarding effect v 46 for the electrode. After placing the latbecome burnt away sufficiently to produce agap between itself and the electrode 4 to prevent the passage of a current, then the solenoid 5 ceases to act, the same being denergized. The clutch 19 will then no l onger hold the carbon in positionand automatically re leases the same, whereupon the falling of the latter will renew contact with the electrode 4. A current will again be established for effecting the normal action of the solenoid 5 and the clutch 19 controlled thereby. This alternate action will continue during the life of the irst carbon, whereupon the lowest .carbon within the magazine will automatically fall into position above the burnt,

out carbon as hereinbefore described.

An electric are lamp of the construction set forth is simple of construct-ion and eilicient in operation. Moreover, sincel the lamp is provided with a carbonv magazine capable of containing a plurality of carbons,

the lamp will operate over an extended period without any attention.

While I have illust-rated and described the preferred construction for carrying my invention into effect, this is capable of variation or modification without departing from the spirit of the invention.

of construction set forth but wish to avail myself of such variations and moditications as come within the scope of the appended claims.

-Having described my invention what I claim as new and desire to secure by Let` ters Patent is:

1. An electric arc lamp comprising a frame, a solenoid secured to said frame so that the axis thereof is vertically disposed, a core operating within said solenoid and adapted to be drawn downwardly when the latter is energized, an axial stem formed integral with said core and depending therefrom, a dash-pot and piston arranged in connectionv with said stem and adapted to retard the movement thereof in eitherA direction, a lever fulcrumed to said frame and pivoted at one end to said stem, a vertically disposed' rod pivoted to the other end of said lever and extending upwardly therefrom, a spring housing arranged adjacent the upper end of said rod, a vertically disposed compression helical springeontained within said housing, there being a longitudinalI slot formed in one side of the latter, -a

I therefore do not wish to be limited to the exact det-ails vertically movable plate pivoted to the upper end .of said rod and mounted to move vertically on the side of said housing in abutting the upper end of said sleeve and adapted to resist the upward movement thereof, a vertically disposed tubular carbon holder arranged adjacent said sleeve, a clutch lever projecting into said carbon holder the free end of which extends horizontally therefrom, a link connecting the free end of said clutch lever with the lower end of said sleeve and adapted to render said clutch lever operative upon an upward movement of the latter, a carbon contained within said carbon holder and adapted to be secured therein by the operation of said clutch lever, said carbon formingan electrode,`a second electrode arranged beneath said carbon electrode and-adapted to contact therewith upon release of said carbon electrode upon the downward movement of said link, and means for regulating the tension of said helical spring, substantially as described.

2. An electric arc lamp comprising a frame, a vertically disposed solenoid secured to said'frame, a core operating in said solenoid and adapted to be drawn downwardly when the latter is energized, a stem depending from said core'and adapted to operate therewith, an oscillatory lever fulcrumed to said frame and pivoted at one end to said stem, a vertical rod pivoted to the other end of said lever and extending vertically therefrom, a slotted plate pivoted to the upper end of said rod, a vertically disposed housing, a screw projecting from said housing and passing through the slot of said plate forming a guide for the movement thereof, a

screw rigidly secured in said plate and projecting into said housing, there being a slot formed in one side of the latter to permit of the free vertical movement of said last named screw, a vertical sleeve adapted to reciprocate in said housing into which said.

last named screw is assed forming a rigid connection, a vertical) rod adapted to move freely in said sleeve and projecting upwardly therefrom into said housing, a helical spring surrounding said last named rod and adapted to exert a dotvnward pressure thereon, a second helical sp'ring surrounding said last named rodand said first named helical spring, said second helical spring be- 'ing adapted to'exert a downward pressure on said sleeve, anadjustable nut threaded into the upper end of said housing abutting the 'upper end of both of said springs, said last named rod projecting through the lower end of said sleeve, a tubular carbon holder carbon 4electrode and verticall formed integral with said last named rod and adapted to move vertically therewith, a bar `into which the lower end of said sleeve is threaded, a link depending from said bar and pivoted thereto, a clutch lever pivoted to one side of said carbon holder and havin a clutching point projecting therein, the ree end of said clutch lever being-pivoted to the lower end of said link, the construct-ion being such ,that when said link is` elevated that said clutching point will be rendered operative, a carbon forming an electrode and loosely mounted in said carbon holderA and adapted to be clutched therein upon the upward movement of said first named rod, the latter movement being effected upon the energizing of said solenoid, a second electrode arranged in'axial alinement with said Q under the same, said electrodes being a apted to be spaced apart forming an arc gap when said solenoid is' energized, and means for limitthe downward movement of said 'carbon ,.llider substantially as described.

'-3. In an are lamp, the combination with a base, of a. supporting arm mounted fthereon; a casmg carried by said arm; a carbon holder mounted on said casing by means permitting rectilinear reciprocatory move# ment; a sleeve having one end slidably mounted in said casing; a rod carried by said carbon holder, slidably monntedin said y sleeve and extended through said casing; compression springs in said casin pressing downwardly on said rod -and sai sleeve; a

clutch l do f projecting into said carbon holder an operatively connected with said sleeve; and means for automatically raisin said sleeve for engging said clutch do wit the carbon electr e in said carbon older and elevating the same.

4. In an arc lamp,the combination with a base, of a supporting arm thereon; a casing rigidly secured vto said supporting arm; a sleeve having one end mounted for reciprocation in said casing; a rod extending through said casing and Asaid sleeve and said ma slidably mounted therein ;l a' carbon holder mounted on said casing by means permitting rectilinear movement and provided Vwith an arm secured to the lower end of said rod; a clutch dog pivoted on said carbon holder and projecting thereinto; means operatively connecting saidclutch dog with said sleeve; and means for imparting reciprocatory movement to said sleeve.

5. In anarc lamp, the combination with a support, of a casing rigidl mounted there on; a sleeve havin one nd mounted for reciprocation in sai casing; a rod extending through said sleeve andv casing and slidably mounted therein; springs 1n said casing mounted orreciprocation upon said casing; a connection between sald sleeve and said plate; and a common source of power whereby said plate may be reciprocated,` impart# ing a similar motion to said sleeve.

6. In an arc lamp, the combination with a carbon holder havin automa tic feedin -means for feeding car ons therethrough', o val magazine located adjacent said; carbon` holder; a chute extending. from said magazine to said holder; a catch carried by said automatic feeding means and' ada ted to have its upper end extended vinto lsaid /chute while the arc lamp is in use; and an upwardly yielding Acarbon' retainer carried .by and spanning the open upper portion of Zine.

In witness whereof Il have signed my name to this specification in the presence of two subscribing witnesses.

HERMAN H; BONEY. vWitnesses:

HmmN F. LILLIB, J osuna R. H. Po'rrs.

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