DE1813591U - ARC LAMP WITH SELF-ACTING CARBON FEEDER. - Google Patents

Description

R, -Hr. Farmer 434-

25.9 * 1958 black / yes. ". _ΛΛ

RA. 300137 * 1 i 5.60

Attachment to
Utility model registration

EUGEN BAXTER GMBH, Stuttgart-Unteirbürkhsiis, at the island power plant 10

Arc lamp with automatic Eohlenvorscüub

The term "refers to an arc glass with sell> s1; aktivepj Eolilenvorscbub, especially for motion picture projectors. which slide positive Coal dependent "iron of the duixsli rays scanned position of their is advanced

It is known anauordnen a heat-sensitive ^ Switch so that it s shining from the heat tew of Idelitßosetjs, einos EOhlenendes is made if this Koblenenöa ma a certain distance is suruckgebrannt "The container includes: then a circuit ,, the follow up on the the Cave causes · In this way the arc can be kept relatively exactly in the same place, what kind of constant light? to the projection, for example of a film, is essential *

ring Bauer GmbH Eo-ITr ₀ Bauer 4-34

Stgta-Üntertürkheim 25ο 9 »1958 Sehw / Yes«

Bg is also known to depend τοπ the voltage of the coals To push the arc, since its voltage increases when the arc is larger, that is, when the coal areas move away from each other »A precise control was already measuring address small voltage differences. However, this regulation does not guarantee a constant arc position, but only one constant length 'especially if the coals are angled to one another are standing, this can lead to very annoying positional errors »

Combining both processes does not seem possible at all, since the feed movements are due to the beam uxigs-dependent Control bring certain changes in the arc length with it, to which the voltage-dependent control responds, even if it is not necessary, so that an 'override and mutual Disruptions would arise *

These disadvantages are avoided according to the invention in that a control device which is dependent on the voltage of the arc provided for the feed of the negative carbon and is connected to a switch that is operated by an element of the positive Coal influencing control device actuated wircL

In a particularly expedient embodiment of the invention, means be provided, which control devices toi? Surges sehii.t'i.ivn, the span between pulling in and falling off the reduce the Heiais used in the control devices and the Yora lifting devices a simple, cheap, but versatile give usable design.

An embodiment of the invention is shown in the drawing » Is 55 own

Breast Bauer GmWI Ii ₄ -Kr ₀ Bauer 4J4 /

Stgt.-XJnterfcürkheim 25 «9 * 1958 Sehw / Yes. f

-3 ·

Fig »I a horizontal one ?! Scmiitü through a Lamp house "with a disengaged mirror, FIG. 2 shows a part of FIG. ΙΙ-ΊΙ of Fig “1 Fig. 3 is a circuit diagram of the control devices of the lamp o

In the lamp house 1 of an arc lamp are a holder 2 door a positive carbon 3 and a holder 4 for a negative carbon "attached *

The holder 2 comprises a housing 6 _t, cooled on its upper side guide pieces 7 · are angebracht- = They encompass the positive .Kohle 3 and hold it with one, some pressure between them so that the festj the Führungsstiicken 1 on a not shown way supplied fuel current can go over to the positive carbon without disruptive contact resistance »

A carrier 8 is attached to the housing 6. It contains bearings and drive elements for three lobes 9 * 10 ητΑ 11, öie rest on three different sides of the coal 3, and the axes ζυτ axis of the coal are crooked. If the rollers rotate, they therefore also rotate the positive carbon 3 and at the same time push it through the guide pieces 7 in the direction of the arc in front of _e

If the 9 »U are driven via a bevel gear 12, the" latter meshes with a bevel gear 13 on a perpendicular sitst mounted in the housing 6 * IQ shaft at its lower end is -sin not shown bevel gear mounted which meshes with a bevel gear Vj . The 'ffelle 16 of this lie ^ slradea is stored in a bearing block 17 on the floor of the larapen house *

The holder ^! λ · the negative carbon also builds a housing ISo. A support cable 19 is attached to this, on which a carriage 20 is slidably guided with the help of non-Öargestilter guides

laugen Bauer GmbH S _β ~ Untertürkheim

R ₉ -Ir, Bauer 45 * 25-9.1958 Black / Yes

With the help of a San ^ e 21, the negative one is on this sledge Foal 3 held »

In the Sragteil 19 is a "pre-) spindle 22, which cooperates with the carriage 20 and feeds it as soon as it is rotated _e The rear end of the feed screw carries a bevel gear 2 ?, which engages in a mounted in the housing 18 bevel 24 A second bevel gear 25 "which is in mesh with a bevel gear 26" sits on its'"hurry.

The shafts 27 and 16 are connected by a pin 29 (S ¹ Xg. 2) to a curve piece 30 at their end directed towards the operator. The curve piece is surrounded by a troimelike anvil 51. Between these ropes there are three balls 32 serving as entrainment links, which are jerked by springs 33 into the gaps between the levu.rvense! Ie: ü) e 30 and the drive link 31 se ^^ ü ^^^^^^^^^^^^^^^^^^^^^^^^^^ M an inner cylindrical surface of the drive member 51 and a Eurven ~ surface of the Eurvenstücks 30 .7ird thereby ", the drive member 31 is driven clockwise _v so it will take over the balls 32, the cam piece 30, so this makes the A'otriebsglied a parts mentioned in the If the drive member rotates against the \ Jh.i: ze ± 3evs ± wa _% , the balls roll back against the pressure of the spring 53 as soon as the cam piece 30 opposes a rotational resistance that exceeds the spring force; the output member is then not taken

Each of the overrunning clutches of shafts 16, 27 is a switch · » member 34, 35 assigned, each with a -TeIIe 36 37 connected is »oils V / ellen 36,37 penetrate the conveyor wall 35 of the lamp— house and carry on their outer », rnöe handles 39? ^ - öo

Eugen Bauer GmbH Stgt.-Untertürkheim

R "-Hr * Bauer 434 25.9ο58 Black / Yes ·

.5.

Jades of the switching elements is mounted on the associated wells 36,37 concentrically to the associated overrunning clutch and has three switching pins 41, which engage on egg-the springs 33 opposite values of the balls 52 in the spaces between the drive member 31 and the _{cam piece 30 β}

If you turn one of the handles 39 or 40 clockwise, the switch pins 41 read gs ^ -en cheese 42 of the cam piece 30 and thereby take this drive link together with its shaft 16 'or 27 with * If you turn the handles in the opposite direction In a clockwise direction, the sliding pins 41 lie against the balls 32 and, via these and the correspondingly compressed springs 33, in turn take the associated shafts with the help of the handles 39-40, so the coals can be pushed back and forth at will.

The drive elements 31 are connected to one another via bevel gears 43, 44 and a '"eile 45, which is mounted on the floor of the lamp house _{with the help of bearing blocks 46 S 47.} Bevel gear 49 of a V / elle 50 engages «The V / elle is also n: with bearing blocks 51 * 52 on the floor of the larapenhauses and carries a bevel gear 53 at its rear end, which meshes with an iron bevel gear 54 is located "This sits under Sv / ischenschaltuns a friction n ^; '55 on the shaft 56 of a Koöors 57 *

A gear crane 58 is placed around the Gchaltglieä 35 a bolt 59 (FIG. 2) is arranged; the us an axis 60 a bearing block 61 fastened in the floor of the lamp house is rotatable is »Br is in its rest position with the help of a spring 62 of An dein free Gchen & el des held away from the ring gear 58 The latch 59 designed as a Vvinke! lever is a pull rod hinged, which is connected to the armature 64 of an electromagnet 65 is;" That which protrudes from the electromagnet, the üiejel 59 opposite end of the pull rod 63 carries a stop *

lugen Bauer GmbH H.-Hr ₀ Bauer 4-34

Stgt "-Untertürkheim 25o9" 1958

screw 66 _v whose position determines the rest position of the pebble 59 _a If the electromagnet 65 is excited, it pulls the rfcer into the position shown; the lever 59 engages the acidic acid in the ring gear 58 and holds the switching link 35 tight.

On eggs Clem -Kegelrad 54 opposite hand, the // ropes 56 of the motor 57 is a fan placed 67 to "Eesaugt axially sugeführte through a pipe 68 air and blows it to a portion on the bottom of the lamp housing away ₅ in its" Mow the above- transmission described parts are mounted "Am part of the fan wheel 67 is ^ r on Einein G-eiiau.se 69 surrounded by a pipe 70 runs out. Fs is divided into a pipe 71? that is carried up to the housing 6 of the positive carbon holder, and a pipe 72 _$ for the holder 4 of the negative coal led the pipe 71 opens ^ sstüeken between the Guide e '7 and these upstream "/ poor protection plate 73 · you supplied through the pipe cooling air? is blown out in the direction of the coal 3

The tube 7S continues through the housing IS of the bracket holder and divides it into two Hohrstück 7 ^, 75 with nozzles 76 ₉ 77 _S which blow the air supplied in the direction of the arc »

This lightbocen forms after the lamp has been sinsed between the negative and positive charcoal. The rays emanating from it - the rays 73 are shown in the drawing, which emanate from the place where the arc is located at the burning end of the positive charcoal. ? Lens 79 to the scope of the lamp house caught ₅ of a game! 30 onto a second mirror S1 and thrown from there through a filter 82 and a slit diaphragm 83 onto a photoresistor 84. This photoresistor is together with a-Heihe ύοώ. Heiais, which sit in housings 83, are attached to the outside of the lamp house. The seiais and photoresistors are one

Eugen Bauer (JmbH R "-Mr" Bauer

«- • Untertürkheim · 25« 9, -1953 Schw / Jd

Surrounding hood 86. Almost a little this * hood are Air inlet openings 87 attached; tob. the opposite The end of the hood outputs the pipe 6ίί »Das laiffeerrad 6? so sucks Air passes through the hood 86 and thereby cools the relays and the photoresistor ■> These relays are related to the circuit of the system is described in the following.

The pftoto resistor 84 is shown in i ^: ig * 3 aoobaals, also the slit diaphragm 83 * the lens 79 and the coals 3 and 5 are shown »

The Pb öto-resistance lies in a ßtr-omkreis <starting from a Hechsestromquelle 88. A helix has been advanced to him. The coil 9C of the relay is in EeI ¹¹ Ie with a paoto resistor; parallel to it is a capacitor 91 * Sei? Capacitor is tuned to compensate for the inductance of coil 90, if the? EingeEocen 7 ^«r ~ verifiable iron core of the coil is" Zn relay has a Veehselsohalter ■ 92 "which alternately a tob. two contacts 93 »94 connects with one contact 95 *

The negative carbon 5 is connected via a Le3.t »n; r 96 with the negative pole 9? connected to a current source, the positive carbon 5 via a line 98 "kit to the positive pole 99 äes currents , ti · ;; · !! © * Bat · positive carbon is directly a relay ICO * Its coil IGj. is a switch 102 arranged ^ which has a contact 105 connected to the line 98 and a Koniäit 104 connected to the contact 95 and "is open when the fteiais is not excited _c

One end of a 7orw.i <! S ^ starsds 105 is connected to the line 98 , the other end of which is connected to the contact 03 and, via a variable resistor 106, to the anchor ?? 10? the SlektroEiOtors 57 is connected * -The anchor the other hand, "ic a '? arose 108 with the line 9 £ veröunden. A sw & tsr? orwMerstand 109 is also provided with a SNDS to the line 98 and mxb its other end to a with the contact 9 & connected line 110 connected

Eugen Bauer GmbH B ₀ -Hr ,, Bauer 434

Stgt _o -Untertürkheim 25 * 9.1958 Schw / Ja ^

The field winding 111 of the motor 57 is switched on between this and the resistor 10S. Between the contact 104 and the line 110 there is an indicator lamp 112 and a resistor 113 connected downstream of it

The parts of the circuit described so far are primarily used to control the advance of the positive carbon. The elements regulating the advance of the negative carbon are connected, on the one hand, to line 110 and, on the other hand, to a tap 114. Its voltage is bsw by the following circuit of the operating time. Temperature of the Lazipe dependent: its line 115 connects via zvtei. Resistors 116 * 117 the lines 98 and 96 · " ¹ OJHST size <3rd resistor 117 decreases _o From these resistors in the potentiometer circuit 2 taps 118,119 are led away and connected via a 'multiple status 120. This is again in potentiometer position · the Tap non-adjustable. (The 'mode of action is given below ») ^

The line 110 initially leads to a protective relay 121, whose coil 122 is on the one hand ar; the line 110, on the other hand at the tap 114; An adjustable resistor 123 is connected in parallel to the coil. "A switch 124, which is closed in the idle state, is assigned to the coil," which connects the line 110 to a terminal 125 of a main relay 126. " A second connection 127 of the main relay is connected to tap 114. The ends of a resistor 129 are connected to the two connections via a non-linear resistor 128. At the end of this i '/ idei'stan & s drawn on the right, one side of the coil 151 of the main relay is connected via a rectifier IJO; The other validity is connected to a tap 132 of the resistor "Parallel to the coil 131 is a compensation round capacitor 133"

1} X »i © size of the '« ideretanße 116 doesn’t take the «··

«9-

Eugene. Bauer GmbH R.-Mr »Bauer 4-34-, ..

Stgi% rüntertürkheim 25 * 9.1958 Schw / Ja ₇ ^ l

Between the attack 132 ixnd a sliding tap 13 * of the resistor 128 is placed a switch 135 * the 2a belongs to an auxiliary relay 136. Sin Knäe of whose coil 137 is connected to the handle 114, the other Eaaa via a co. Belonging to the Haptrelais 126 '& aXter 138 with the connection 125. The switches 135 and 138 are open in the rest position. To the Hllfsrelais 136 has not a switch 139 'is closed in the rest position, and connects the line 98 with the electromagnet 65 _t eggs on the other hand via a resistor 140 to the line 96 is augesohlοεaen "

As long as the lamp is aasgeschaltet _¥ fütet oils coil 101 of the 100 Heiais no electricity, so aal the switch 102 is open NNCL the controllers Sincu energized This will remain so during the ignition = DI® .Spar.nuB.g between the poles 97 and 99? which are usually clamps of a gleiciis? iclite: -? s is higher during the ignition process than during the burning of the lamp ", this overvoltage is therefore kept away from the control devices by means of the switch 102""

Once the arc has formed, it is effected by the öie coil 101 flowing, relatively strong arc currents the closing of the salary 1C2.

As long as the carbon plus 3 riehti3s the position _occupied% are no rays on denPhotoY / esistance 84 "bars Seiais 89 is therefore de-energized, and the Weehselschalter 92 assumes the position shown _ö The field winding 111 of the motor 5? therefore receives current via the contact 94- _β Since the armature 107 öes Kot or s is constantly connected to the line 38 via the switching resistor 105, the motor starts up after the switch 1C2 is closed, at a relatively low speed.

+) The lamp 112 is short-circuited and does not light up. -10-

Eugen Bauer GmbH Eo-Fri ₁₃ Bauer 3

Stgt »-Untertürkheim 25-9.1958 Sehw /

-10-

The shaft 56 of the motor is the same; the v7elle: i 50 and. 4-5, the latter cireht via the bevel gears 43 and 44. The drive shaft 31 of the freewheel clutches on the shafts 27 and 16: I) the shaft 16 is thereby taken along and drives; the rollers 9 at 11 Ms ι the positive coal v / ill be therefore continuously advanced * The speed of this movement is so measured that it does not completely _$ balances the .Abbrand the coal. The Faieilaufkupplung on the shaft is kloelciert, cla the magnet 65 through the closed switch 139 receives current. Bio negative soles burn is much lower than that of positive charcoal "," therefore stops * The air sucked in by the * Lü & erraä 6? Cools the relays housed in the housings. 85 relay 89 * 100.121 «126.136« The required air cools the Store eggs and are blown out at the points described above, *

^! A ^; emi. the positive Kohl © 3 is a piece of surücSgel} 2? annt, rays fall on the photoresistor 84 nncl make it conductive. On the coil 90 · of the relay 89 its voltage occurs 5 the relay sees and turns the '^ echseisclialter 92 so that it connects the contacts 99 and 93. When the armature is tightened, the capacitor reaches> 1 its maximum Kcmpensationsffekt5 the photoresistor 84 · you reactive current is therefore relieved and there is only a lower voltage at the coil 9C

The for · ® id erstand 103 has been short-circuited by the changeover switch 92. The anchor 10? of the solder 57 therefore receives a higher voltage * The field winding of the motor only receives current through the X ^r or resistor 109 (äes: -ΐΐίίstand 113 is relatively large compared to this), the field of the eotor is * weakened and the motor runs faster · * Sr pushes the positive coal in short time so because; ? Yor ₄ that / ide on the photo-: estanä 84 no longer rays fall "Once äesseii resistance only i ^s / enig grows, the on AEEI? Coil 9 ^ lying, connected by the process described above, connects the tension even smaller and the Seiais 89 falls off. The 'Jeehaelsclia.lter 92 turns

+) The lamp 112 lights up and indicates that the —11- » Control device works.

Eugen Bauer GmbH E ₀ -Ir. Farmer 434

Stgto ~ üntertürkheim 25.9 «1958 Gchw / Yes.

-11-

Back to the position shown * Through the arrangement described the relay 89 works very sensitive iraci only has a small one Range between response and

The control device for the feed ds: c negative carbon only works when the switch 92 is in the? Laj? e shown is ₉ since the line 110 only then carried a sufficiently high voltage

The switch 124 "remains closed as long as the voltage between the poles 97 and 99 remains in a certain range around the normal operating voltage". If it is higher, the protective relay 121 picks up and thereby separates the main relay 126 from ₀ Bas sensitive and the relatively expensive main relay is protected from damage.

Seiais 121, 126 do not directly measure the voltage between lines 110 and 95, but between the first-mentioned line and tap 114. When the lamp is only freshly switched on, voltages corresponding to the ratios of the corresponding appear at taps 118 and 119 Fractions of resistors 116 and 11? in the cold state correspond to “The tap 114 has a voltage which, depending on its setting, was between the voltages of the taps 118 and 119. As long as the terminals are cold, its voltage is not sufficient to power the relays to respond to »Bas has the advantage» that.3 the voltage fluctuations that usually occur some time after the arc has been formed, Syrian poles 97 and 99 have no effect on the control device «

Are resistors 116 and 11? warm, so see the tension of taps 118,119 and 114 increases and is in the operating range of the relay · By setting the tap 114 can be in certain Grensen the response voltage of the relay compared to the arc »·

Eugen Bäwer GmbH Stst * -Untertürkheim

H "-Hr. Bauer 25,9,1958 p

12th

-12-

Spanmmg, that is to say, the one who is awakened by the EeIaIs Arc length, to be adjusted »

The nonlinear resistor 128 and the rectifier 30.1 serve the spool 131 respond only in their field of work, but particularly sensitive there gu let ₀ If the Bogenspannun ^ up to the intended ^{n A:} increased ert, so does the main relay 126 and closes the switch 136 * As a result, the auxiliary relay 137 receives current and, on the other hand, closes the switch 135, which short-circuits part of the v7i <3es? stanäs 138. The voltage on the coil 131 is thereby reduced, so that even a slight decrease in the voltage would cause the main relay to drop out again »

When addressing the auxiliary relay 137, switch 139 wircl open 'The magnet 65 is thus de-energized and the spring 62 pivots the latch 59 from the ring gear 58 out "The> 7elle therefore via the associated Freilauflc'ippluBg τοπ the shaft vfeväen rotated and the negative charcoal 5 'sird. advanced. It is always a question of small ways; As soon as the arc voltage is lower, the power relay 126 drops out. The auxiliary relay 137 is de-energized again, the switch 139 closes and the gate push of the negative carbon is locked again

V / ie from the circuit diagram and the introductory ». Description, the relays of the control device for the negative coal remain inactive as long as the Kelais Sy has drawn in, so as long as the positive coal is pushed in at an accelerated rate - voltage fluctuations at the arc, cie occur during the XTachschiebens, remain ¹ without any influence on the Negative coal movement. Blocking the feed of the negative coal also has the advantage that the kinus coal never reaches the. Touching the holder of the positive carbon 6 can be advanced, for example if the positive carbon is not replaced in time and

Bugen Bauer GmbH R ₀ -No * Bauer 434

Stgt _e ~ Untertürkheiin 25 ο 9 »195Q Schw / Ja / U

• 13 =

"In this case" it would always be relay 89 stay sucked »

The Keifcungskupplung 55 on the shaft 56 has the purpose of mechanical Damage to the store ^ if by any chance both soles or even ropes of the coal bearer Ms ssur immedi ~ visible contact should be advanced.

»14 =

Claims (2)

lugen Bauer GmbH R. ~ No. Bauer 4-34- ) j Stgt.-Uhtertürlcheim 55 * 9 * 1958 Black / Yes / 7 r.A. 300 Ansjjruche ^ Arc lamp with: automatic Txih ^. ^ Vr-riujeeliiu · - · ^ liiä \> e special for motion picture projectors ^ at v / elcher the potent coal depending on the position of its burning point scanned by rays is advanced, dadurclj. gslssnnäeiclinet ^ that its ot-euesieinrictitung, which is dependent on the voltage of the electric heating, is provided for the Yorsciiub of the negative carbon (5) and is connected to a switch (92). the ύοώ. an element (89) «3 the positive carbon (3)" is actuated to influence the control device .. 2., arc lamp according to claim I ₅ because a relay (89) is followed by a sound of the rays of the positive throat (3) "influenced by the switching element (S ^), which alternates with the advance of the positive E'ohle "makes accelerating circuit, odes? switches on the tax unit for the negative coal » 3ο arc lamp according to claim S ₅ , characterized in that the relay (89) is provided with a device which the voltage lying on the coil (9C) of the relay; after the relay has responded ο 4- _ώ Bogenlaiape gekannzeichnet according to claim 3% öaßnrcli "that AEA relay (89) with alternating current betrd ^ b-eri is _s and that its coil, a capacitor (91) paraiIelgsseusXfeeii is _e is dimensioned for the compensation of the Spulenindofctiirltat at aageisogeneia solenoid armature * 5ο arc lamp according to one of claims 1 "'+, öadurch marked' stands _t that is connected with the coal (3 * 5) in a row- HeIaIs (100), the switch (102) DIE control devices for both coals to form clss Lielitstroraes with a current-carrying contact (103) irerblndöt «; when the lamp is switched off and during Siirtdens but γ on keeps this contact separate » Eng en Bauer GmbH So «-Hr» Bauer 434 · Stgt, -Untertürkheim 23 "9". 1958 black / yes & _A arc lamp according to, one of claims 1-5 characterized _¥ gelcennzeichnet that the armature (.10?) And the 'f ^ lclwicklung (.1.11) of the drive motor (37) lor dsiiTorsclmb the positive carbon (3). .je a resistor (10: ^ 109); 'is connected upstream, and in that the control means for the feed of the positive carbon say assigns a changeover switch (92) XST ₉ of alternately kurascalleß one of the resistors. 7ο arc lamp according to claim 6 "characterized gekenaseicimet, <! Ate indicator lamp (112) connected in parallel to the changeover switch (92), which indicates tmmnliBSmiBi & ffikBKBxti ^ mkaffe eier control devices" δ ο arc lamp according to one of claims l * -? j characterized * that the tax direction of the negative coal (5) a main relay (126) contains, ai'5 a device ^ which the voltage at the coil (131) otes relay is lagging behind Response of the relay. 9- _3-arc lamp according spoke 8, characterized GEK ^ iin-Eeiclmets that the coil (131) of the main relay and a VJicer-Suäsid is connected (129) parallel ^ and affects a switch (138)., Where a Eilfsrelais (136) nacligeordnet is _§ which short-circuits part of the parallel-connected resistor (129) when it is tightened 10a arc lamp according to claim S oaex? 9 ^ öadurcli marked, that the coil (131) of the main relay (126) is preceded by a non-linear resistor (129), Ho arc lamp according to one of claims S-IO _9, characterized in that your main relay (126) is preceded by a protective relay (121) which »switches off the main relay when the voltage introduced to it exceeds a certain permissible value» Eugen Bauer GmbH 2o «Ir, Baues? 434 Stgt «, - Untertürkheim 25 * 9 * 1958 ScIv // Yes, -16 « 12 ο arc lamp according to one of claims 3 ~ 1Q, characterized in that a connection (127) äes main relay (126) for the control device of the negative carbon & ϊι a potentiometer (116 to 119) is connected, which consists of E? ^ Ei resistors ( 116,117) with oppositely variable temperature coefficients, which are connected one behind the other in parallel cen KoI) Ien (3 ^ 5) of the lamp » ■ <Arc lamp according to claim 12, characterized * that two taps (118,119) äes temperature-dependent resistors (116,117) containing Potentiometex's Qj he another Potentiometers (120) are connected to one another at whose operationally adjustable aluminum handle (1.1A) the spool (131) of the main relay (126) is connected. "■ .4- _e arc lamp labeled in 9-13 ?. according to one of Claims« seiohnet that the Hllfsrelals (136) includes a switch (139) "which turns on the feed usr a negative carbon influencing circuit, 15 »Arc lamp according to one of the claims l-l-'K characterized * that the feed of the positive coal (3-) be ~ Acting motor (57) also with the feed device (22,23) for the negative coal antrie'bsTerbunclera is, and. this in the connection is connected to a device which from the control device for ö & a. Feed the negative Charcoal (5) is influenced and interrupts the antriether bond, as long as the arc lamp tense the sexist Has value » 16, arc lamp each claim 15 »äadurea characterized in that the motor (57) is rotatably connected to the drive member (31) of a freewheel clutch _v whose output member (3C) to the feed device (23 * 24) for the negative carbon (5) is connected, and that one with the help of an ele & tromagnetisct Eugen Bauer GmbH H.-Ir ₁ = Bauer 434 I .xf Stgt. -Untertürkheim 25 «9.1958 Schw / Jsfj0 actuated bolt (59) a lockable shift member (35) is arranged which does not affect the clutch in a free rotation, but held firmly disengages the drive and output connecting iSitnaiimaglieder (32) of the clutch and. ae.s Abteiebsglieö (30) hold l? _e arc lamp according to claim 16, characterized in that the switching element (55>) reads with a lamp from the outside? Arbitrarily Terärehbaren handriff (40) is connected \ mä in both Brenrichtunjen the output link (30) mitnefaBiea.de means (41) has ο 16ο arc lamp according to one of claims 1 ·> -17ί, characterized in that that between the eotor (57) and the feed device (9-11) for the positive carbon (3) a free-wheeling clutch is switched on is with one. Switching element (34) $ that with a handle (39) connected to the outside of the lamp house and running freely does not affect the coupling, but in both directions the output member (30) has driving means (41) » 19 »Arc lamp according to one of claims 1-18, characterized in that the motor (57) which brings about the gate thrust of at least one 5-point coal drives a fan (67 ^ 69) at the same time, which stx'om a cooling air via the relays (89» 100 , 12Γ * Τ2Β ~ ₉ 136) the control devices conducts v » 20o arc lamp according to claim 19 »characterized-gekenrisöicimet that the photoresistor (84) and the relays (89 ^ 100,121,126,136) are accommodated on the outside of the lamp house in a room through which the fan (67 $ 69) outside air; draws in ο 21c arc lamp according to claim 20, characterized geke _»$ .nseiclmet that the conveyed from the Liifterrad (67) of the fan air is at least a part of Zn in the region of the lamp house passed into which the Antriebsverbindunnren for the Yorseliiib the coals are * Eugen Bauer GmbH »R ₄ -Mr ,, Bauer 4-J4 / Stgt, -Untertürkheim 25o9-> 1958 Black / Yes. 22 * arc lamp according to claim 21 ₁ characterized; ₈ da3 part of geXörderten from the impeller (67) air passed through lines (70,71,72) in the saw his the Kohlenenöen and is blown out vrir-δ "