USRE15652E

USRE15652E - woltmann

Info

Publication number: USRE15652E
Authority: US
Publication date: 1923-07-10

Description

Juy 10, 1923.

.A Re.15,652 E. WOLTMANN OPERATOBZ'S OUTFIT FOR ELECTRIC WELDING Original lFiled May l,l 1915 3 She'etsheet 1 fvenfor;

July l0,- 1923. Re. 15,652

E. WOLTMANN A OPERATOR'S OUTFIT FORVELECTRIC WELDING Original Filed May 1,1915 SSheets-Sheet' 4 4 if@ fr 72 /4 6/ Y 5 52a g h/Zz www. In Uenor:

l25 Fig. 3

' UNITED STATES i 'i A n n-NST woLTnANmwor Nnw'Yoam'rN'; Y.

ornna'ronsoo'rrir ron Enncrai'c WELDING. l y

original in. meenemen/aa number-12, 191e, suini No. 25,179. mea nay i, ma. applicaties for,

relsaueled December'l, 1919. Serial No. 348,682.

To all whom it may concern: l Be itv known that 1,. ERNST WoL'rMANN, citizen ofthe UnitedStates, and resident o' New York,.i`nv the county of' New York and 6 State of New York, have invented certain new and useful Improvements in Operators Outfits for Electric Welding, of which the following is a 'cifcation The object o my invention is van opera- 10 tors outfit or hand tool by means ofwhich an inexperienced operator may repair or join metal ortions y means of an electric are and we ding terminal means adaptedto Ydeliver molten metal to the arc which in 16 turn carries it to the metal portion` to be welded or repaired so organized as. to cause the arc to'have a` tixed'voltage and amperage and therefore a fixed heat, to secure an even ow of' welding metal. 20 In the drawings:

Figure 1 is a side elevation of my hand l tool with a small portion broken away.

Fig. 2is a bottom view of the c lip, a portion of which is broken` away in Fig. 1.

1s aview bottom of the solenoid shown in Fig. Fig.. 4 is a detail. Fig. 5 vis a side elevation partly in section showing further details.

Fig. 6 is a rear view with portions removed.

7 isa diagram of the circuits of my invention.

Fig. 8 shows a sectional elevationr of a line A A,

g5 preferred form of construction.'

Fig. 9 is ak plan view of same on Fig. 8.

In my operators outfit, or hand tool I employ a handle 1 which may a hollow'cyl- 4o inder of metal with a chased or engraved surface to enable the hand to grasp it easily without slipping. Within the cylinder` 1 is secured a solenoid 2 shown in Figs- 5v and 6. The cylinder 1 is secured to the ends 3 and 5 4 of the vsolenoid magnet by means of screwsv 5 and 6. The 4solenoid is'provided with a winding covering a spool 8, hollow to form a dash-pot chamber 10 to receive the varmal ture o r core 9'of the solenoid which is adapt-- so ed vto reciprocate sluggishly within the chamber 10. -The 'core 9 is linked by means of the lug 9 to the pin 9" secured to a plunger 9 operating in the chamber 10, said plunger e plunger inthe chamber 10, or such seep 1n of air may be accomplished by such partlyin section of the' PAT-ENTFOiFICE.

and chamber forming a dash-pot, airbeing allowed to seep by the `plunger in slightA uantities because of intentional loose fit of ot er means appurtenant to the'plunger and chamber as may be adapted for this purpose, said plunger being of lcarbon orY graphite. This -renders the action of the corev sluggish and overcomes its tendency underthe spring 29 totremble or vibrate rapidly. The movable core 9 is pivoted to a lever 12 shown in Fi`g. 1- which in turn is pivoted at 13 in the bracket 14 which is secured to the bottom ange 4 of the solenoid spoolas shown in Fig. 6. This bracket is provided with a nut or other binding post. 15 adapted to be connected with a main linei conductor for the purpose of supplying current thereto for welding purposes. n

.Upon the end of the lever 12 is secured a spring clip 16 more clearly .shown in bottom' y view in Fig. 2. This clip is composed ofthe block of metal 17 having'a tongue 17 adapted to lit the s lot 18 in'the end of the lever 12. A screw 19 passes through theend of the lever and binds the cleft portion upon the tongue 17 securely uniting' them ltogether. Upon theblock is also fixedly secured the clip member 20. This is stationaryand betweenit and the block is secured the spring 21 tending to separate the clips. The other clip member 22 is loosely secured tothe block by means ofthe wing nut 23 and screw 24 means of the pin 25' fixed to the block and loosely passing through a hole in the clip 27. The clip 22is electrically connectedv to the lever 12. by suitable means, such as the flexible; stranded co per connection `13,'on e end secured under t e plate 13" fastened se- I .curely to the clip 2O and the other lend sol deredto the block 13 secured by screws to the bracket 14.

The bracket"14 is hollowedout as'indicated by the broken line 28 so that it will. contain the s ring shown 1in broken line 29, one end of w ich 1s secured to a fixed pin '80 and is held from getting out of'position by passing through the bracket and the other end of which is secured to the end of a screw 31 which passes loosely-through the aperture 32 and through the heel of the lever 12 .shown at, 33 and then through a. thumb nut the .spring tension to the lever is such' that as the spring is stretched and its -tension increased the point of application approaches a line drawn from the pivot 30 through .the fulcrum, thereby reduc- 1 ing the leverage effect of the spring upon 'the compensating lever.. Suitable proportions will result in such a balance between the reduction of the leverage and the increase of the tension. Thus thev tension of the spring 29 upon the lever is not materially varied by the maximum variation in position of the core` 9 of the solenoid. The core isi loosely fitted within the spool of the solenoid and the pivots 9al are loose to provide freedom of action for the core.

The spring 29 is so arranged as to dra-W the welding terminal means or pencil away from the Work. Thecore of the solenoid on vthe contrary is so arranged as to draw. the

welding terminal means or pencil toward the work.

The ,circuits are shown in Fig. 7. The main welding circuit may be traced from the Abinding post 36 by Way of the conductor 37 to the bracket 14 thence through the pivot'13 or connection 13a around the post to the lever.

12 and clip 22, and then through thewelding pencil 27 which is brought sufficiently close to the Workv 38 as to form an arc. The current then returns by way of the conductor 39 to the source Vof supply binding post 40. The

circuit or coil 7 of the solenoid is connected on one side tothe conductor and on the other side to a push button switch 41 normally open but adapted to be closed by the operators finger when he grasps the. cylinder 1, to establish a circuit through the .conductor 42 to a terminal means adapted to be connected temporarily to the work 38, Oras shown connected to the threaded member 43, which may be Vtemporarily` attached to the work 38, the purpose of suchv connecting means or terminal memberbeing to establish a shunt circuit to supply a current to the coil-7 of the Solenoid. This shunt is carried across the arc from one side of-thevcir cuit to the other.

It is open until the operator closes the switch41. This is a confA venient thing to do since it is located upon the tool itself as shownin Fig. 1`. rIn this figure this switch is shown to be-composed of a clip 44 connected as shown in Fig. 4 to the flexible conductor 45 Whichhrin turn is con* nected to the terminal '43 asv shownk Fig. 7. The other side of this switch is composed of a clip or spring 46 block of insulating material 47 which is secured to the top of the solenoid and the circuit is led from this clip 46 in two directions, one to the solenoid as heretoforey described and the other by means of a conductor 48 to the contact 49 of the buzzer thence through the coil 50 ofthe buzzer and the conductor 51 to a spiral spring 52 carryingv at its to a contact 53 adapted to come into electrica connection with the core 9 and thereby'establisha connection with the bracket 14 and thus enable current to pass through the ybuzzer from the conductor 37 to the clip 46 in shunt of the coil 7 of the solenoid. A

This circuit and buzzer are for the pur` pose of informing theoperator that his tool has beenbrought too close to the work and there is not sufficient room for the necessary variations of the welding terminal means by means of the solenoid. When the operator hears the signal or buzzer, he lifts his tool slightly so that the-contact 53 and the core 9 are separated and4 thereafter his welding goes on as before. of particular value iny thisyconnection since during the operation of welding the operator usually observes his arc through mounted upon thel An. audible signal is smoked glass which is so dark that he is unable to see much else. A signal which would be Yvisible Ordinarily wond be inf visible through the glass so that some other sort of signal is advisable to inform him when his tool is not held at the proper distance from the work. The contact v53 and the spring 52 are located upon a block of insulating material 54 which is sup-4 ported by posts 55 upon the bottom of the solenoid 4. The conductor 51 is shown in Figs. 1, 3 and 6. These figures show how the conductor is concealed between the outside of the solenoid coil vand within the cylindrical cover or handle 1. l

While, as has been stated, an audible signal is advisable, it should be understood that I do not restrict myself to an audible signal but thatthe signal may be of any kind suitable to give -warning to` the operator, and adapted and arranged to become operative bythe 40o near approach` of the tool to the work.

The flanges 3 and 4.of the solenoid are through which the wire 5l is adapted to passin order that it may be concealed within the cylindrical handle Upon the top of the solenoid is an insulating block 47 lprovided with slots or cut-out `portions 55 'shewn' in.- rig.. i.

' the top 'mechanism um' the bottom of 44 thereb 'and intr The upper rtion of this block is removed in Fi' 5 an' 6.. Uf ii of this block which is accu p. the spool of the soleno'd in any" suitable way is mounted thebuzzer as shown iny Fig. 1 and Fig. 4. In Fig. 1 is shown theconnecting conductor 5 1 leading from a binding: post 56 upon. the buzzer into theV solenoi handle" l: Figs; 5A and 6. This 52' and contact 53.

spring 0 Thel vconductor from the other binding'post 5,8 'is'. shown' in Fig. 4' and is carried' through the edgeof the block 47 and connectedv tothe clip 46 as shown. The spring cli also connected. to it asrshow-n in` ig. 4`y a conductor 59 leading to one endof the solenoidV coil 7 as shown at 59 in Fig. 5. j 'I fhe other endgof the solenoid coil" is' carried through the hole in the bracket 14 as shown in Fig. 6 end secured by a proper bindingscrew 61' to the bracket. Surrounding the the f solenoid' is located the ollow cylinder 62 having suitable cut-out ,portions 63 for thelever 12,

Spring- 46V has Y and 64 for the bracket 14. The cylinder is secured v to the bracket 14 b means of screwsl 65 to hold it in place. Be ore operatiomthe weldin terminal means, or'pencil of metal 27, is ocated between-the spring clips-- 2 0 and The welding terminal. means or the neil 2 7 'shown, 'mayfbe com' 'o'f Swe ish iron or any allo of steel that may be desired, or any con uctive and .fusible metal or material suitable for .the purpose.

The operator grasps the cylinder l and with a linger pushes upon the insulating piece rinl clip 46 vand 'presses it-int) contact 'with 1 e spring clip c os - ucing t e solenoid 'into a normally open shunt circuit adapted to be 'closed by .meansl of 'the terminal 43 to the work 38.

When the latter connection has beenl estab# lished, theoperator-may bring the rwelding terminal means orv the vwork drawn. travels from the source of supply 36 by ncil into contact with 38 in 'or er that an are may wayof a conductor 37 to the'binding post 15 through the bracket 14 to the'le'ver 12 to the welding terminal means or pencil 27,'

tothe workv 38, thence byway of conductor 39 to the other terminal 40. of the source of supply."jWhen the welding in bmiighijinw contact, a rent terminal means from the solenoid rcircuit vof the welding term 5ml means thereby reduc' sive eect of the l ect of releasing-:the core 9 somewhat sothat under the influence of the' spring 29 the the electro-responwelding terminal means is drawn away from tte-:werk iieebfytmfing t are:

This is shown4 more clearly in conductor is connectedl i to the binding post 57 upon the block 54v which in turn is connected tothe spirali shown:iii-'Figs'.f` 8

*mounted to'. swingsabout the y y result of'this arranl ment' is that as. the.

the pair of contacts41 solenoid Vwhich has the eflimitsl of motion o the com' 91116 U19' strengthlof. the: solenoid'f and the tensionkoff, djiisted to each fot-lier l the' spring. 295- are so' a that when the action; of drawing the are takes' place', the arc drawn: Ato the right llength for welding-purposes; Itis' drawn rapidly and automatically so thatthelo rf-f ator A.ngo-trainingor. skill to enable iin-v toerfo this-rfun'ctienrproperly. e preferred formjofmy invention; is

thev lever andclip: whichV carry lever 1 2'y vibi-ates su cientl under the inilueiicel of the,v s ring '291ml the core 9, the end ofthe vcfeldl'iing,y 'enci1', where it isnearest the `work and' drawn, swings along ai curve of which the ivot 13 is the een fr. 4This action somewhat interferes withv the'. be'st 'vveldin'gy xe'si'ili'.f'.V My constructionshown in Fi: 8 and' 9' overcomes this diculty'. thel welding pencil isl scheld va'i'id maiiip iilatedv that it approaches thev work` or r`etra mm the wo'rkiii i straightv une, 'rm-S.

result is block which carries the clip member 20 and 22 withinthetube 675 by pinning; it' asin.- dicated at 68. or' by brazing it into the tubey andi 9. In Figs. .11 naar,

the pencil are:- pivot'13': The

rom' whichI the a'rc is.l

by mounting thel or securing it in any other suitable ma'nner. The tube 67 is adapted to slide freely within the tubular housing A69 which forms an extensioiiof the bracket 14". The lu 66` is rovided with ea'rs 70between w 'ic the en `71 ofthe lever 12 is pivoted loosely, Y

the hole' in the lever 12 being elongated to givethe `pivot free lay. The lever` 12l is'v pivotedat 1'3 in the vracket 14;".` The housmg 69 is o n as 'showns at 72.*for the ure' ose of giving the lever 12* freeplay w ere it enters the housingand also for the, pur# pose of allowin access to the'binding nut 7 3 lfor the purpose also of allowing the' lever r freedom 'of action. The ii'exible connection 13'* is vsoldered at one end' to one be ofthe ears 73 of the` plug 66 andthe other The current that creates the arc end is secured as shownfin Fig.' Wunder 14 r the purpose ofcarryiiig4 lgs'. 1, 3, 4, 5 and 6 is -shown lin section` in this 8. The handle 1 isA secured tothe vspool 10% This'spool includes the tubular portion and the bottom a Bange 10 both being composedr preferably of brass.4

The topv ldan or iron; an secured-to the bottom. flange are'proyided tofore described and allow a feecirculalio' iis

thezplate 74v which is'sc'r'ewed toibo" bracket fr th i kttoui 'i maintient. om e rac e Y epenci carrying.`c ips.'

In other respects, the construction` iswthew same ae'that in Fig. 1 and the constructionl vshown -in F' '.S the' 815061151"r iron flange 4. These aii'ges` l with the cut-outportions here'. f

3 is preferably made of` steel' l tion of air within the handle l1 l tion where the force of the solenoid core in this figure thereby keeping itfairly cool and .c omfortableto the l. -Secured -to. the topi-lange S are the two blocks 47a and 4:7@ upon'th'etop ofwhich ismunted the buzzer 50a'.` kThe play of the as'that in F igl and amounts to perhaps an` inch. The play of vthe other ed'oif the levver 12, namely the end 71amounts to aboutl half that amount. This proportionis found most effective forthe regulation of the are. In Fig. 8 the core 9g 'is shownincontact with the contact point 53, the lever being in the extreme position. lVhen the circuit of the solenoid is closed however, the core is instantly brought up to its proper posithe tension of the spring 29a. he operation of the construction in this figure 1s evident, the chief difference fromY other figures being lthat; the weldingv termi@ nal means or pencil moves ina straight line instead of in the arc of a circle.

In the'operation of wel ing, an operators hand is, as a rule unsteady and he'is unable to prevent variations in the lengthA of the are due to this unsteadiness.

and cutting,r down th 'current through the solenoid -coil which has the eff The various strengths of the coil and spring are so adjusted as to provide a suitable compensation for this tendency.

When, through the operators unsteadiness`,.the welding terminal means, or pencil,` tends toward shortening the arc, al

greater current starts tonow through the' i thelsolenoid pull so that the spring 29 pulls the Welding terminal means delivers a constant los or pencil-correspondingly away from the Work. v

These variations take place between suoli narrow limitsthat for practical purposes, the arc remains steady and uniform and flow of metall from the welding terminal means or pencil to the work thereby avoiding the porosity of the weld which otherwise might occur. `Having thusv described Amy inventlom shouldL be understood thaty there mayA modifications thereof be and variations therein is approximately the same.

' ing said weldm balances means connected to terminal means it from the spirit of my -invention or excee ing -the scope of the appended claims. What I claim is: f l. An electric Welder comprising, with .means for supplying electricity thereto and means Afor' operating the welder, welding terminal suppl ing electricity and operatively supporte and providing an electrode, terminal 4means connected to said means for supplying electricity and attachable to the work and-'providing an electrode, means for movterminal means -to the work able terminal means is elecwithout departin when said attac means connected to means for tric'allyconnected tofthe work, and means v.

for moving said welding terminal means away from the work. j i 2. An electric welder, comprising, with electricity thereto and the welder, welding terminal means connected to said means for supplying electricity and operatively supported and providing an electrode, terminal means connected to said means for supplying elect city and attachable tothe' and providing an electrode, means for movi ing said weldm terminal means to the Work whcnsaid attac able terminal means is electrically connected to the work, :and spring actuated meansfor moving said welding terminal means away from the work.

3. An electric Welder com'prising, with means forv supplying electricity thereto and means for operating the Welder,l welding terminal means connected to said' means foi supplying electricity and operatively supported and providing an electrode, terminal means connected to'said means for supplying electricity and attachableto thework and providing an electrode, means for moving saidV welding terminal means to-the .when said attachable terminal means.

work is electrically connected to thework, means for vmoving said Welding terminal means away from the work, :and means for compensating the movement of said terminal-means to and away from the Work. An electric Welder comprising, with supplying electricity ported and providing said means for supplying electricity and attachable to the work and providing an electrode, means for moving said welding terminal `means to the `work when said i-s electrically connected tothe work; spring actuated means away from the work, an

means for compensating. theV movement of said-weldingterminal means rto and away from the -workv f' welding attachable terminal means for moving said- Welding an electrode, terminal l 5. An electric Welder comprising, with connected to said means forsupply' elc-v means for operating the welder,wel ing tertricity and' attachable to the work :all pro- .v

minal means com of conductive fusible material electrically .connected and operatively supported for vroviding an electrode, electrically connected terminal means attachable to the work and providing an electrode, electrically energized means operatively arranged for moving said Weldingl terminall means to the work when said at-4 tachable terminal meansA selectrically 'com A,netted to the work, and means'A for moving 'saidwelding terminal meansaW-ay from the means attachable to the Work and providactuated means for moving said We ing an electrode, electrically energized means! o iv'ely arranged forA moving Said Wel ingiterminal lmeans to the work when said attachable terminal means is elec.- 'trically connected to the work, and spring terninal means away from 'the work.

7. `An electric Welder comprising, with means for operating the Welder, welding terminal means composed of conductlve fusible material and electrically connected and operatively supported for providing an electrede, electrically connected terminal. means -attachable to the 'Work and provlding an electrode, electrically energized means op l eratively arranged for moving said welding terminal means to the Work when said attachable terminal means is electrically connected to the work, means for moving said- Wel'd'ing --terminal means away from the work, and means for compensating the movement of said Weldingterminal means to and away from the Work.

8.A An lectric Welder comprising, With means for` operating the.V Welder, welding terminal means composed of., conductive fusible material and electrically connected and operatively supported for providing an electrode, electrically energized means opera tively arranged for moving said Weldingl terminal means to the work when said at.

' i tachable terminal means is electrically iconnected to the Work, spring actuated means for moving said Welding terminal means away from the work', and means orv compensating the movement-` of said' welding terminal meansto and away from the Work.

'9. An electric Welder comprising, with means for supplying electricityy thereto.

and means for operating the Welder, Welding terminal means of conductive fusible material connected to said means for suplying electricity andoperatively supported or providing an electrode, terminal means providing anelectrode, termina ding - 12. An electric Welder comprlsing, means for supplying electricity thereto and; means for operating the Welder, welding."

viding an electrode solenoid means operatlvelyarranged and connected for movin said Welding terminal means to the wor when said attachable terminal 'meansiselectrically connected tothe work, and means for moving said. welding terminal means away from the work.

,10. An electric Welder comprising, with means for supplying electricity thereto and means .for operating the Welder, welding terminal means of conductive fusible material connected to said lmeans vfor supplying electricity and operatively supported for means con nected toV said vmeans for supplying electricity, and attachable-to the Work and 4providing an electrode solenoid. means operatively arranged and connected for movin said Welding terminal means to the wr vwhen said attachable terminal means is electrically connected to the work, and ring actuated means vfor moving saidv we ding terminal means away from the work.

, 11.v An Aelectric ,Welder comprising, With means for supplying electricit .thereto and means for operating the we der, Welding terminal means of conductive fusible ma terial'connected to said means for supplying electricity and operably supported'for providin y an electrode, terminal Ameans vconnected to vsaid means for supplying elec-4 tricity andattachable to the work and proi vidin anelectrode, solenoid means Voper ative y arranged and connected for moving said Welding terminal means to the Work when said attachable terminal means is elec'- vtrically connected to the Work, means for moving said welding terminal means away from the Work, and means for compensating the movement of saidweldin terminal means Vto and away from the wor terminal means of conductive fusible material connected to said means for supplying electricity and operably supported for pro- 'viding an electrode, terminal means connected to 'said means for supplying elec, tricity and attachable to the work-and providing an electrode, solenoid meansoper-v atively arranged and connected for morlng said Welding terminal `means to the Work when said attachable terminal'means is electrically connected to the work, spring actuated means for moving said welding ter. minal means away fromv the Work, 4and means for compensating the movementv of said Welding terminal means to and away the work."1 .l

13. An electric Welder comprising, with means for supplying electricit thereto and means. ferH enemies the 'fw der.- welding;

' plun er, means for moving said Welding t-erterminal means of conductive fusible material connected to said means lor supplying electricity and operably supported` for providing an electrode, terminal means con-- mina meansawy from the work, and means for compensating the movement of said Welding terminal lmeans to' and away' from the work.

14. An electric Welder comprising, with means for supplying electricity thereto and means for operating the Welder,welding`- terminal means 'of' conductive fusible material connected to said means vfor supplyingelectricity and operatively supported for providing an electrode, termlnal means .connected to said means for supplying ele:-l

tricity and attachable to the work and providing anelectrode, solenoid means operatively arranged and connected for moving said Welding terminal means to the work When said attachable terminal means is electrically connected to the work, said solenoid means comprisinga plunger having airseeping l ing suggish operation 'of the IpIunger, spring-actuated means for vmoving said welding-terminal means away from the Work, and meansfor compensating the movelment of said Welding terminal means to and away from the Work.v

15j. An electric Welder comprising, With means for supplying electricity thereto, a hollow cylindrical handle, solenoid means arranged in said handle and comprising a plunger movable in a chamber in said handle and operatively attached to the solenoid core, said core having pivotally attached to the end thereof opposite Vto said plunger, an arm carrying at an end thereofl opposite to said pivotal attachment of the arm to said core a welding terminal member,

and said arm being provided with a transversely extending heel, a bracket secured at an end to said handle and pivotally attached at the other end thereof tosaid arm and provided with a spring operatively connected to said heel, the tendency of said spring being to draw said heel of said arm towards said bracket, means for regulating said tendency of said spring, said bracket being in electric' connection with said means for supplying electricity and -com` municating current therefrom to said arm and thereby to said Welding terminal member, terminal means connected to said means for supplying'electricity and attachable to means appurtenant thereto for caus-` the work for establishin a shunt current to the solenoid coil, and means for controlling the supplyof electricity to said bracket and to: said attachable terminal means.v n l .16. An 'electric Welder comprising, with means vfor,supplyingelectricity thereto, a

hollow ",cylindrical handle,` solenoid means varranged in said handle and comprising a sluggishly movable plunger operating in a chamber in said handle and operatively attached to the solenoid cere, said core having pivotally attached to the end thereof opposite to said plunger -an arm carrying by clip means at an end thereof opposite to said pivotal attachment of the arm to said core a welding terminal member, said arm being provided with a transversely extending heel,a,bracket secured at an end to said handle and pivotally attached at the other end thereof to said arm and provided With a spring operatively connected to said heel, the tendency of` said spring being to draw said heel towards said arm, means for regulating said tendency of said` spring, said 'bracket being in electric connection with said means for supplying electricity and communicating current therefrom to said arm and lthereby to said Welding terminal member, terminal means connected to said means A:for supplying electricity and attachable to the work .for establishing a shunt current to the solenoid coil, and means for controlling the supply' of electricity to saidv bracket and to said attachable terminal means. v

,17. An electric Welder comprising, with means forl supplying electricity thereto and means -for operating the Welder, welding terminal means connected to said means for supplying electricity and operatively supported and providing an electrode, terminal means connected to said means for supplyingvelectricity and attachable to 'the Work and providing an electrode, means for moving said Welding terminal means to the f Work when said attachable terminal means is electrically connected to the work, means for moving said welding terminal means away from the Work, and warning means normally inoperative and arranged to become operative by too near approach of said Welding terminal means to the work.

18. An electric Welder comprising, with actuated means forv moving said wel .terminal means away from the `work, an

i Y warning means normally inoperative and y.-wveldf termina 19.

electrically connected and arranged to b e- .come operative by too near approach of sald means tothe work. electric welder comprising, with @means for supplying electricit .thereto and f'fmeans for operating the we der, welding terminal means connected to said means lfor`v suppl ing electricity and operatively supporte and providing an electrode, terminal means connected to said means for supply- .ingelectricity and attachable to the work and providing .an electrode, means formoving said welding terminal means to the: .work when said attachable terminalgmeans jiselectrically connected to the work, means for moving` saidwelding terminal -means away from the work, and audible warning means normally inoperative end arrang'ed to become operative by too'near approach o fsad welding terminal means to the work.

'f 20-. Anele`ctric Welder comprising, with means for supplying electrici thereto and means .for operating the Iwe der, weldmg terminal connected ,tosaidl means for suppl .electricity andv o vratively sup- P01-ted -lnal means connected and providing an e ectrode, termito saidy means for supporting' electricity g and attachable' to the work and providing an-electrode, means for moviggsaidwelding terminal 'means to the fro.;

when said attachable terminal means .iselectricallyconnected to the work, and audiblewarning means comprising a buzzer normally inoperative andl electrically" connected and arranged to become operative, by too near ap roach of said welding nal means to-t e work.

21. In an arc weldin system, in combina? tion, a welding penci subject to the control of an operators hand and adapted to be brought into contact'with a piece of work,

. a compensating lever carrying said pencil to draw said ypencil awa from the work, an

' oerators handle, sai

apted to approach the pencil to the work,-

i 'y a signal mounted upon said combination f brought too close and -a vlimiting contact mounted upon saidcombinationy adapted to connect electrically with said lever when the combination'ls to the work to inform the operator thereof. i

. 22. In an arc welding system, in comibination, a welding pencil, subject tothe control of an operators hand and adapted to'be brought into contact with a piece of work, a compensating levercarryin said p encl, a resilient device to draw sai -pen- .away from the work, an operators handle associated .with an 'electroresponsive device to appjroael""the pencil to the work,

a signal. niountedipon said combination operators handle and a contact mounted upon said combination adapted to connect electrically withsaid lever when the .combination is brought too close to the work to-inform the operator thereof, said contact. being resiliently-f-mounted so Aas not to interfere withilo the motion of said lever.

23. In an electric-arc welding system, a`

freely movable welding tool adapted to be heldand supported y.by the operator during the welding operation and having'a handle 75 adapted to be grasped by the hand of the operator whereby the operatorv is enabled to support and manipulate the welding tool, sal' welding tol having a movable W eldin'g\l electrode, and an electro-responsive device 80 in said tool having a movable sive 'to fluctuations inthe wel ng current to maintain the welding arc st aneven heat.

24.. In .an arc welding system, in combination, a welding pencil subject to thecontrol of an operators hand A'and adapted to be brought into contact with a. piece of work, a compensating lever carryinsad pencil, a resillent deviceoto'draw sai 'pencil awa from the work, an operators handle adapte (part respon- -to be ywielded manually,-carrying an ,electroresponsive device. to approach the pencil to the work', said electo-responsivedevice beinglocated'n a vshunt around the are 25. In an arc welding system, in combination, a welding pencil subject to the control of an operators hand. and adapted tobe bro ht into contact with `a ieee of work, a resilient deviceto draw'said pencilaway r from the work and an joperators 'v handle adapted to be wielded manually car ing an electro-responsive .device tocont'rol t e position of the pencil with relation tothe work,

lsaid electro-responsive device being located ina shunt around the arc.

26. Inanarc welding system, in combination, a welding pencil subject to the control of an .o rators hand and adapted to be ht intoicontact with a piece of work, a resilient device and an operators handle adapted to -be wielded'manually, carrying an electro-responsive device to control the. position ofthe pencil with relation to the work, an operatorsswitch mounted upon said combination adapted to be closed' by' 'an operators hand when'graspin said handle said electro-responsive devicec eing tw'o points, one'adapted to ber closedby said operators lswitch andthe other vincluding located I in a shunt around the arc normallyv open at a terminal ilexiblynnected to said c'ombi- V nation and adapted'tobe brought into con-4 tact with the work. i 27. .In an arc welding system, vin combination, a welding pencil subject to the 'control v i of an operators hand'and adaptedjto brought into contact with a piece of wieg,

a resilient device, an operators handle ca ing an electro-responsive device such as a solenoid coil to control the position of the' pencil with relation to the Work, saidy electroing an electro-responsive `device to. control responsive device being located in a shunt around-the arc, and an audible signal having electro-responsive operating means located in shunt of said 'solenoid coil.

28. In an arc weldlng system, in combina-v` tion, a welding pencil subject to the control of an operators hand and adapted to be -brought into contactwith a piece of Work,

a resilient device, an operators handle carrythe position of the pencil with relation to they Work, said electro-responsive devioebing located' in a shunt around the arc, said resilient device and' said electro-responsivc device being so ladjusted toeach other and to the current :as to maintain substantially a steady arc. v

29. In an arc Welding system, in combination, a welding pencil subject 'to the control of an operators hand' and adapted to be,

broughtv into-contact with a p iece of work,

a resilient device, and an operators handle, consistingof a hollow7 cylinder surrounding an electro-responsive device to control' the position of the pencil with relation to the work.

30. Inan arc'welding system, in combinaL tion,- a welding pencil'subject to the control of an operators 'hand and adapted to be brought into contact witha piece of work,

a resilient device to draw said pencil away from the work. and an operators 'handle consisting of a hollow cylinder surrounding an electroresponsive device to approach the pencil to the work. 31. In an arc welding system, in combination", a welding pencil subject to the control I of an operators hand and .adapted to be brought into contact with a piece of work, a

` compensating lever carrying said pencil, a

resilient device to draw said pencil away from the work. an operators handle consisting of a hollow cylinder surrounding an electro-responsive device to approach thc pencil to the work and an'audible signal mounted upon said combination.

32. In au arc welding system, in combination, ya welding pencil subject to the control of an operators hand and adapted to be brought into contact withy a piece of work. avcompensating lever carrying said pencil. a resilient device to draw saidpencil away from the work, an operators handle A consisting of a hollow cylinder surrounding an electro-responsive device to approach the pencil yto the work, an audible signal mounted upon said combination, and an operators switch mounted upon said handle.

33. In an are Welding system, in combination, a welding pencil su ject'to the control of an operators hand and adapted to be brought into contact with a piece of Work,

a compensating lever carrying said pencil, a signal mounted upon said combination, op-

erated by a limiting contact mounted upon said combination adapted to electrically connect with said lever when the combination is broughttoo close to the work to inform the operator thereof.

34. In an arc welding system, in combination, a .welding pencil subjectto the coni trol of an operators hand and adapted to be brought into contact with-a piece of work, a compensating lever carrying said pencil, an.V audible signal mounted upon said combination operated by a limiting vContact; mounted upon said combination adapted to connect electrically with said lever when the combination is brought too .close to the Work to inform the operator thereof.I

35. In an arc weldin bination, a welding penci subject to the control of an operatorshand and adapted to system, in coni-v be brought into contact with a piece of Work,

a compensating lever car ing said encil, -an audible signal-mounte upon sai combination, operated by a. limiting vcontact mounted upon said combination adapted to connect .electrically with'said lever when the combination isvbroughtI too close to the work to inform the operator thereof, said contact beingresiliently mountedsoas not to interfere wlth the motion ofsaid lever.

36. In an arc Welding system, in comblnation, a welding pencil su ject to the control ofan operators hand and adapted to be 'brought into contact with a piece of work,"

a compensating lever carrying said pencil, an operators handle associated with an electro-responsive device such as a solenoid coil. an audible signal mounted upon said combination `operated-by a limitin co'n-A tact mounted -upon said .combination adapted to connect electrically with said lever when the combination is brought too close to the work to inform the operator thereof, said Contact being resiliently mounted so as not to interfere with the motion of said lever.

37. In an electric arc welding system, a handle, a movable welding device combined withan audible signal and a limiting stop'to cause the operation of said signal when said Welding device drifts beyond the range of position provided with relation to said handle, I

38. In an arc welding system, in combination, a welding pencil subject to the control of an operators hand composed of Welding metal and adapted to be brought into contact with a piece of work, a spring clip adapted to frictio'nally hold said pencil at one end, on one side of its fulcrum, and an electrically influenced magnetic device associated with' the other endof said compenlever upon the other side of said'- y 'cl-'um located atl a substantiallyv greater distance from said fulcrum than'said pencil, and a resilient device to approach the pencil to thework. f v' '39. In en arc welding system, in combination, a welding pencil subject to the I control of an operators handl composed of said welding metal and adapted to be brought into contact with a iece of work, a spring clip adapted to frictlonally hold said pencil, a compensating lever carrying at one end encil on one side of its fulcrum and an e ectrically influenced magnetic device vassociated with the otherlend of said compensating lever upon the other side ofrsaid fulcrum located at a substantially greater.

4'distance from said ulcrum than said pencil to approach the pencil to the work, .and a ltension spring to draw said pencil away from thework.

' 40. In an. arc welding system, in combination, a welding pencil subject to the control brought into contactwith a piece of Work,A

'l approach the pencil tothe work, and a resilof an operators hand and adapted to be brought' into contact with a plece of work,

V.a resllient device, means to adjust saidresilient device, and an operators handle carry# ing an electro-responsive device to control the position of the pencilwith relation to the work. 1

41. In an arc welding system, in combinay tion, a welding pencil subject to the control of an operators hand and adaptedto` be brought into contact with a piece of work,

a compensating lever carrying lsaid pencilv and an electrically1 vice to approach t e .a 4'resilient device to influenced magnetic deraw said pencil afway from the work.

l 42.` In an arc welding'system, vin" combination, a welding pencil subject to the control of an operators hand and .adapted to be a compensating jlever carrying said pencil, an elect'rically'rhfluenced magnetic device' to ient device to draw said pencil away from the work,'said resilient device exerting" a pull upon said compensating lever at a point close to its fulcrum. Y' V 43. In an arc weldin system, in combination, a weldingH nci subject to the control of an operators hand and adapted to 'v be brought into contact .with a piece of work, a compensating levercarrying at. one end said pencil on one side of its fulcrumv and an electricall 'influenced magnetic de- 'vice associated wlth the other end of said compensating leverupon the other side of said fulcrum located at a substantially'tgreater distance from said fulcrum than sai penlcil to approach the pencil to the work and a resilient device to ,draw said pencil away from the work.l 44. In an arc welding system, in combinancil to the work, and"` tion, a welding pencil subject to the controlof an operators hand anda'dapted'to be brought intoconact with a piece f work a com nsating ever carryin sai nc' and arilectrically-influenced gms eti? device', .a resilient device, an operato s handle, a bracket mounted thereon, said operators handle surrounding a solenoid coil adapted to 'attract said magnetic device to control the position of thepencil with relation-t0 thewoxk. p

45. In an arc welding system, incombination, a welding pencil subject to the control of an; operators hand and adapted to be broughtintocontact with apiece of work, a compensating Ylever carrying said pencil and anelectrically infiuenced magnetic' de` vice to 'approach the pencil to the work, a

resilient device tol draw said pencil awa from the '-work, and an I'operatos hand e consisting of a hollow cylinder surrounding an electro-responsive device adapted A*to* attract said magnetic device to control the posilion of the'pencil with-relation to the wor In an are welding system, in combination, a welding pencil subject to the control i of an operators hand and adapted to' be brought into contact with a piece of work, a spring clip. adapted to frictlonally and resiliently ho d lever carrying said clip onv one side of its fulcrum and an electricall influencedma'gnetic device associated with the Aother end of said compensating lever to approach the pencil to the work,; a resilient device to draw said pencil away from the work, an operators handle, carrying said fulcrum, said operators :handle surrounding a solenoid coil adapted to attract said magnetic device to control the position ofthe pencil with relation to the work.

47. In anarc welding system, in combination', a'weldi'ng pencil subject'to the control ofA an operators hand land adapted to be brought into contact with a piece of work,

.a scpring clip adaptedto frictionallyhold sai pencil at one end saidcli on one side of its fulcrum and an electrica lyvinfluenced -magnetic deviceaociated with the other en of said'compensating lever, upon the other side of said fulcrum located at a substantially greater distance from said fulcrum thanv said pencil to approachl the pencil to the work, a resilient device to draw said pencil away from. the work, an .operators andle, a bracket mounted thereon carrying said' fulcrum, saidA operators handle surrounding asolenoid lcoil adapted to attract said magnetic device t0 control the position of, the pencil with relation tothe work.,`

48.' In an arc welding system, in combines tion, a welding pencilA subject to the controll 'of an operator-s hand and'adapted to' be brought-into contact` with a piece of work,

a. s ringclip adapted to frictionally hold sai pencil, a compensating-lever carrying at one endsaid clip on one side of its fulcrum and an electrically influenced magnetic device associated with the other end of said compensating llever upon the other side of said fulcrum to approach the pencil to the work, a resilient device to draw said pencil away from the work, an opera-tors handle, a bracket thereon carrying saidv fulcrum,. said operators handleI surrounding a solenoid coil adapted to attract said magnetic device to control the position of the pencil with relation to the work.

49. In an are welding system, in combi n nation, a welding pencil subject to the con,

trol of a opcrators hand and adapted to be brought into contact with a piece of work, a spring clip adapted to l'rictionally hold said pencil, a compensating lever carryin' at one end said clip on one side of its fgulcrum and an electrically influenced magnetic device associated with the other end of said compensating lever upon the 'other side of said fulcrum located at a sub- Y stantially greater distance from said fulcrum to said pencil to approach -the pencil to the work, a resilient device to draw said pencil away from the work, an operators handle and a bracket mounted thereon carrying said `fulcrum,

lsaid operators handle surrounding a solenoid coil adapted to attract said magneticv bination and adapted to be device to, control the position of the pencil with relation to the work, and an operators switch mounted upon said electro-respon-` sive device, said device being `located in a shunt around the are normally open at two points, one adapted to be closed b said operators switch, and the other inc uding a terminal flexibly connected to'said combrought into contact with the work. f

50. In an arc-weldin system, in combination, a welding pencisubject to the control of an operators liand and adapted to be broughtinto contact with a piece of work, a spring clip adapted to frictionally hold said pencil, a compensating lever caring a solenoid coil adapted to attract said magnetic device to control the position of the pencil with relation to the work and an operators switch mounted upon said electro-responsive device, said device being nation, a welding pencil. subject to the control of an operators hand and adapted to be brought into contact with a piece of 4Work, a compensating lever carrying at one end said pencil on one side of its fulcrum and an electrically influenced magnetic device associated with the other end of said compensating lever upon the other side of said fulcrum,` and a resilient device to draw said pencil away from the work, said resilient device exerting a pull upon said compensating lever at a point close to its fulcrum. i

53. In an arc'welding system, in combination, -a welding pencil subject to thecontrol of an operators hand andadapted to brought into contact with a piece of work, a compensating lever carrying at one end said pencil on one side of its'fulcrum and an electrically influenced magnetic device associated withthe other end of saidcompensating lever upon the other side of said fulcrum located at a substantially greater distance from said fulcrum than said pencil, to approach the'pencil to the work, a resilient device to draw said pencil away from the work, said resilient device exerting a ,pull upon said" compensating lever at a point close to its fulcrum, an operators handle and a bracket thereon carrying said fiilcrum, said operators handle associated `with an electro-responsive device adapted to attract said magnetic device to .control the po- 'sit-ion of the pencil with relation tothe work. l i 54. In an arc welding system, in combination, a. welding pencil subjecttothe ,control of an operators hand and adapted to be brought into contact with a piece ofV Work. and an electrically influenced magnetic device to approach the pencil to the work, an operators handle, said'operators handle adapted to attract said magnetic device to control the position of the pencil with relation to the work and an operators switch mounted upon said handle adapted to be trol of an operators hand and adapted. to bina'tion, said audible signa-l having electrobe brought into contact with a -pieceof work, and an electrically influenced magnetic device to approach the pencil to the work, and an operators hande carryingan electro-responsive device adapted to attract said magnetic device to control the position of the pencil with relaticny to the work and an o rators switch mounted upon -said hand e adapted to be closed by an operators hand when grasping said handle, said electro-responsive device being located .in a

'shunt amtrndthe arc in acircuitnormally open and adapted to be Lclosed by said operators switch.

56. In an arc welding system, in combination, a Welding pencil subject to the control of an operators hand land adapted to be brought into contact with a piece of work and an electrically influenced magnetic device to approach the pencil to the work, an operators handle carrying an electro-responsive device adapted to attract said magnetic deviceto control the position of the pencil with relation to the work and an operators switch mounted upon said handle adapted to be closed by an operators hand whent grasping said handle, said electro-responsivedevice being 'located in a shunt around the arc normally open at two points -one adapted to be closed by saidjoperators switch and the other'including a terminal flexibly connected lto saidcombination and. adapted to be brought into contact with the wor 57. In an arcvwelding system, in combination, a welding pencil' subject to the control of an operators hand and adapted to be brought into contact with a piece of worlc and an velectrically influenced magnetic device to approach the pencil to the work, an operators 4handle 'carrying an electro-responsive deviceadapted to attract said magnetic device to control the position of the pencil with relation to the work, an audible signal mounted upon said combination. and an operators switch mountedj upon said handle adapted to be closed by an operators hand when grasping said handle, said electro-responsive device being .located in a shunt around the arc in a circuit normally open and adapted to be closed by said opcra'tors switch, and said audible signal having electro-responsive operatingmeans located in shunt of said solenoid coil.

58. In an arc welding system, in combination, a welding pencil subject to the control of an operators hand and adapted to be brought into contact with a piece of work in order that an arc may be drawn, an op' j erators handle associated with an electro.-

responsive device adapted to attract said magnetic device to control the position of the pencil with relation to the work, and an audible signal mounted upon said com'- responsive operating means located in shunt of said electroresponsive" device.

59. In an arcwelding syem, in combination, a welding pencil subject to thecontrol of an operators'hand and adapted to be brought into contact with a piece of work and an electrically influenced magnetic device, an operators handle associated with an electro-responsive device to control theposiuponfsaid combination adapted to.connectv tion of thepencil with relation to the work and a si al mounted upon said combination opera by 'La limiting contact mounted electrically with said. lever when the combination is brought too close to the work to inform the operator thereof.

60. In an arc welding system, in combination, a Welding pencil subject `to the control ofan voperators hand and dapted`to be brought into contact with a piece of work and an electrically influenced magnetic device, an operators handle associated with an electro-responsive device to control the position of the pencil with relation to the work .and an audible signal mounted upon said combination operated by a limiting contact. mounted upon said combination adapted to connect electrically with said magnetic device when the combination is brought too close to the work to inform the operator thereof.

61. In an arc welding system, in combination, a weldingpencil subject to the control of an operators hand ,and adapted to be brought into contact with a piece of work and an electrically influenced magnetic device, an ,operators handle associated with anelectro-responsive device to control the position of the pencil with relation to the work and an audible signal mounted upon said combination operated by a limiting contact mounted upon said combination `adapted to connect electrically with said magnetic device when the combination is brought too close to the work to inform the operator thereof, said contact being resiliently mountedso as not to linterfere with the motion of said lever.

62. In an arc weldingvsystern, in combination, a welding pencil subject to the control of an .operators hand and adapted to be brought into contact with a piece of work brought into Contact with a piece of work, a'.

'las

compensating lever carrying said pencil and an electrically influencedlmagnetic device adapted to reciprocate sluggishly to approach the pencilto the Work, a resilient device-to draw said pencil away from the Work -and an operators handle associated with an electro-responsive device adapted to attract said magnetic device to control the position of the pencil with relation to the, work.

64. In an arc Welding'system, in. combina-` 4 tion, a Welding pencil subject to 4the control of an operators hand and adapted to be broughtl into contact with a. pieceof work, a compensating' lever carrying said pencil on one side of its fulcrum and an electrically infiuenced .magnetic device adapted to re ci rocate sluggishly upon the other sideof sald fulcrumA to approach the pencil to the Work, a resilient device to draw said pencil away from the Work andan operators handle associated with anV electro-responsive device adapted to attractsaid magnetic device to control the position of the pencil with relation to the Work. 65. In an arc Welding system, in comblnation` a welding pencil subjectto the con-` trol of an operators hand vand adapted to.

' be brought into contact with a piece of. Work,

a. compensating levercarrying said pencil and adapted to reciprocate sluggishly.

66. In an arc Welding system, in combination, aV Welding pencil subject to .the control of an operators hand and-adapted to be brought into contact With a piece of Work. a spring clip adapted to frictionally and resiliently holdsaid pencil, a compensating lever 'carrying said Vpencil `on one side of its .fulg

. crum and an electrically influenced magnetic -device adapted to reciprocate sluggishly (to the Work.

67. In an arc Welding system, in combination, a Welding pencil subject to the control of an operators hand and adapted to be brought into contact with a piece of Work, a spring clip `adapted to frictionally and resiliently hold said pencil, a compensating lever carrying said pencil .on one side of its ,fulcrum and an electrically infiuenced -nation, a Welding pencil subject to the conmagnetic device adapted to reciprocate sluggishly upon the other side of saidfulcrum located at a. substantially greater distance from said fulcrum than said pencil to approach the pencil to the work, a resilient de= vice to draw said pencil'away from the work,

a'n operators handle carrying said ulcrum,

said operators handle associated with anV electro-responsive device adapted to attract said magnetic device to app-roach the pencil to the work and an operators switch mount- .ed upon said handle adapted to be closed by an operators hand when gras-ping said handle.

68. In an' arc welding system, in combination, a Welding pencil subject to the control'of an operators hand and adapted to be brought into contact with a piece of Work,l an operators handle associated with an electroresponsive device to control the position of the pencil with relation to the Work, said electro-responsive device andhandle being concentrically mounted with free air passages between them with inlets and exit passageways for air cooling purposes. y 69. In an arc welding systennin combination, a Welding pencil subject to the control of an operators hand and adapted to be brought into contact with a piece of Work,

a compensating lever for causing the movean operators handle associated with an elec-.

tro-responsive device to control the position of the pencil `with relation to the work and means to cause said welding pencil to vibrate -in a substantially straight line to and from.

the Work and guiding devices for said ele-' nient to guide it to and from the Work.

71. In an arc Welding system, in Combination, a Welding pencil subject to the control of an o-perators hand and adapted to be brought into contact with a piece of work, an operators handle associated with an electroresponsive device to controlV the position of the pencil with relation to the work. andmeans to render the motion of said pencil sluggish. l

72. In an arc welding system, in combi'- nation, a welding pencil subject to the control of an operators hand and adapted to be brought into contact with .a piece of work, an operators handle associated with an electro-responsive device to control the position of the pencil'with relation to the work, and means to render the motion of said pencil sluggish consistino of a dash pot'.

73. n an arc Welding system, in combitrol of an operators hand and adapted to be brought into contact with a iece of work, an operators handle associate with an electro-responsive device to control the position of the pencil with relation to the work and means to render the motion of said pencil sluggish consisting of a dash pot device having a iston. 4. n an arc welding system, in combination, a weldingv pencil' subject to the control of an operators hand and adapted to be brought into contact with a piece of work, an operator-s handle associated with an electro-responsive device to ,control the position of the Apencil with relation to the work and means to render the motion of said vpencil sluggish consisting of a dash pot device having a piston of self lubricating substance.

5. n a arc welding system, in combi` nation, a welding pencil subject to the control of an operator brought into contact with a piece of work, a compensatirglever carrying said pencil adapted to reciprocate sluggishly, a magnetic core, an operators' handle associated with an electro-responsive device to control the position "of the pencil with relation to the work and means. to render the motion of' said pencil sluggish consisting of a dash pot device having a piston of carbon linked :to

said core 76, In anarc welding system, in combination, a welding pencil subject to the -control of an operators hand and adaptedto be brought into contact with a piece of work, a

4compensatin lever carrying said pencil and an electrica an operators ndle associated with an electro-responsive device to control the position of the pencil with relation to the work and .meansto render the motion of said pencil sluggish consisting of a dash pot device hav-4v ing a piston of carbon linked to said compensating lever. Y

77. In an are welding system, in combination, a welding pencil subject to the control of an operators hand and adapted to be brought into contact with a piece of work a compensatin lever carrying at one en said pencil am? an electrically magnetic de'- vice, an operators handle associated with anelectro-responsive device to control the position of the pencil with relation to the work and means to render the motion of said pencil sluggish and consistin of a dash pot and device having a piston o carbon linked to said compensating lever within the spool of said electro-res onsive device.

78. In an arc we ding system, in combination, a welding ,pencil subject to the control of an o rators hand and adapted to be brought into contact with a piece of work, an operators handle aociated with an electro-responsive device to control the position of the ncil with relation to the work and magnetic flanges for the spool of said elecs hand and adapted to be A y influenced magnetic device,

tro-responsive device, the ianges surrounding the movable core being spaced therefrom to prevent magnetic interference with its action.

.79. In an electric arc welding system, a handle, a movable Welding device combined with an audible signal and a limitin stop to cause the operation of said signal w en said weldingdevice drifts out of position with relation to said handle.

80. In an arc weldingsystem, in combination, a Welding pencil subject to the control of an operators-hand and adapted to be brought into contact with a piece of Work to establish an arc, a compensating lever, mounting said pencil, electro-responsive means to inliuence the operation of said lever in its relation to the arc and a resilient device opposing said electro-responsive device an electrically influenced magnetic device adapted to actuate said lever to approach the pencil to the work, and a tension spring opposing said magnetic device to draw sald pencil away from the work.

82. In an electric arc welding system, a

freely movable handle adapted to be grasped by the.hand of an operator and carrying a movable welding electrode, an electro-responsive device mounted thereon having a movable part to maintain the welding arc at an even heat and means to minimize the range of movement of said electrode with relation to that of the movable part of said electro-responsive device.`

83. In an electric arc 'welding system, a freely movable handle adapted to be grasped bythe hand of an operator and carrying a movable welding electrode, an electro-responsive device mounted thereon having a movable part to maintain the welding arc at an even heat and resilient means to evenly oppose the influence of said electro-responsive device regardless of the relative positioxs of said movable part and of said electro e.

ERNST WOLTMANN.

Witnesses:

. Fm-:Damon T. Sass,

H. D. PaNNar.