US929473A - Soldering-tool. - Google Patents

Description

J. L. & O. NILSSON.

SOLDBRING TOOL.

APPLIOATION FILED JAN.13,1908,

Patented July 27. 1909.

Offa- UNITED STATES' PATENT OFFICE.-

JOHAN LUDvie NnlssoNaND OLOF eUsTAF NILSSON., or CHICAGO, ILLINOIS. f

As'oLDERm'csr-TOOL.

Application filed January 13,` 1908. Serial No. 410,582.

T o all. whom fit may concern:

Be it known that We JOHAN L. NILssoN andOLorl G. NILssoN, citizens of the United States,-res'iding at Chicago, in the county of Cook and State of Illinois, have invented certain new and usefulY 'Improvements in ing; to provide the core and coil with improved electrical contacts; to facilitate separation of the difterentvparts of the tool; to` provide means for lvarying the distance of the lhand-grip from *the copper tip, Or to shorten or Vlengthen the tool as'necessity may lrequire; to provide an improved con structionV for theheel. or rear end of the core upon which thecoil is Wound, for the purposes of securing strength and atthe same time yreducing'. someWhat thel conductivity 30.

of heat at said end; to provide means at the forward end'of the core for the purpose of assisting in the conduction of heat from core to copper tip; to protect the resistance coil, incase it substantially air-tight, Aand adapt' it generally to be freely handled, as a separate part removed from the tool, Without danger of injury to thecoil and to prof vide other minor improvements hereinafter referred to.

lVith the above named objects in view our invention consists in the novel construction, arrangement and combination of parts, herelinafter described in detail, illustrated in the drawing and incorporated in the claims'.

In the drawing-Figure 1 is a longitudinal section of a full size tool embodying my invention. Fig. 2 is a similar view of several of the parts separated. Fig. 3 is an enlarged cross section taken on line 3-3 of Fig. 1. Fig. et is asimilar section taken on line #l1-.l1 of Fig. 1. Fig. 5 is a similar section taken on line 5 5 of Fig. 1. Fig. G is a section, partly broken away, taken, on line 6 6 of Fig. 1.

Referring in detail to the several views,

- Speceationof Letters Patent. I

PatentedrJuly 27', 1909.

the body of the tool comprises a tube, handle portion, or piece of gas-piping, 2, a grip 3 slidably mounted on said tube and normally secured thereto against movement by means of. an interiorly threadedfcollar, or chuck, 4,-the opening of which is tapered as shown ,-\vl1ich has threaded .engagement With an exteriorlyg threaded and tapered collar 5` forming a, part of the ferrule'y secured to the grip 3 in any suitable manner.

lso

A steel collar 7 is mounted on the forward end' of the tube 2 and -this collar is secured4 ,to the rear end of a shell 8 'Within Which is what l term a heat cartridge 9. The" latter is composed of a copper 'core v10 upon Which is Wound a resistance coil 11 and theplatter is protected by a copper shell or tube 12. The forward end of the core projects beyond the coil inthe form of a threaded nipple 13.

Upon this nipple and against the'end ofthe coil 11 is a copper ring 14. This ring together Withthe shell 12, is secured aga-inst displacement on the core by means of a pin 15 which passes through shell 12, ring 14. and

core 10. This separate copper ring-111A is mounted on the core after the threads 16 on its nipple have'been cut, Which enables..v the formation of threads so that they AWill eX- tend fully up to thel ring, as shown, and make it possible to screw the butt end of the soldering tip 17 up against the ring ,111 very closely. The butt orA rear end of the tip 17:' has a threaded bore 18 which -engages the 'nipple 13 which conducts the heat to the tip 17 through the Walls of said bore 1S While. the copper ring 14 carries the heat of the coil and core tothe eXtreme rear end of the 'tip, Or the rim formed by the opening 18.

The outside shell 8 is not threaded-directly upon the copper tipv 17 for the reason that. the vaCidsused in soldering eat into the copper threads and make the joint loose, which not only makes the tip 4Wabbly and unsteady inl service, but it also admits the ,acids to the coil and causes its destruction as Well as an insulating film between core and tip. We obviate lthis diiiiculty by placing upon the tip 17 a tightly fitting ring 19 which 1s made of some metal upon whichv the soldering acid does not act in the above-described manner. Ironv and steel Will serve very well for, the ring 19. With said ring 19 the outside shell 8 has'threaded engagement. The forward rim ofthe ringv19is beveled as`shown at 2O and the beveled portion extends slightly be loo yond the threads on the ring so as t'o form an annular shoulder 21 against which the forward end ofthe shell 8 is tightly screwed. The beveled surface is provided to shed the acid away from the joint' between the shell 8 .and the ring 19.

Atv the rear end of the lcoil and core is aA tliimble 22 and a nipple 23 all in one piece and made out of a metal whichis a relatively' poor 'conductor of heat. This thimble and nipple is made out of a solid piece or metal bored out at one end and reduced at the other, as shown.- in the recess formed by the bore is mounted a thimble of lava 24 the inner i end of the recess in which is of less diameter than the outer end. In .the inner or reduced recess is mounted a. phosphor bronze con-- tact ring 25 and in` the outer or larger portion of the recess is a similar, but largeiyring .26. Freni the former ring one ',end, 27, of

the resistance coil leads through a suitable perforation in the thiinble 22. rl`he `larger ring 26 is similarly connected with thev opposite end 28 of the coil.l rlhe nipple 23 is mounted in an opening 29 in the end of the core and is secured to the core by a transverse pin.30 that passes through bothy core and nipple.

The tube 2 is fined throughout pm of its length with a lava stick 31 in whi'ch conducting wires l32 and 33 are embedded. The inner ends of these wires are Hattened into contact spri'ngs v34 and 35, the former having electrical connection with the outer, or large,

, trodes of the handle and of the coil.

and 37 and with a longitudinal bore 42.

J ring 2G and the spring 35 having similar connection withl the inner and smaller ring 25.- These springs, as shown, are curved at their cndsso that they shall not'stub against the rims of the respective rings when the springs and rings are pushed into contact i' pair of wires 42 and '43 lead into the'tool `through the' bore 42 and a knot 45 Yis formed in these wires to occupy the transverse bore 40, and thefree ends thereof, .labeled 4G and..

47, are engaged by the clips, or clamps, 38 and 39. The knot 45 is larger than the bore 42 and thus prevents pull upon 'the cord of wires 48 from disengaging the ends 46 and 47 from the clips.

In order to exclude air, gases or va )ors -*from gaining entrance to the interior o the tool'7 from the handle-end thereof, we pro-i vide substantially a hermetic seal between the tube 2 and the insulation 41, which seal consists of a suitablewax ring 49 which is poured into an annular recess around the in# sulation, through a hole 50 in the tube 2 while the sealing substanceis in a fluid state.V

vIf for any reason it is necessary'to pull out the-contents of the tube 2 the seal 49 is liqueiied vi-r'st if its resistance is suficient to bind the parts together against separation. The other points at which admission of air -or fumes might be possible are the joints be. tween the ends of the outer sleeve 8 and the rings 19 and v7. But with the provision of the shoulder 21 and a close fitting of the tube 8 against same this joint is easily made l airtight. The ring 7 is provided" with a similar annular shoulder'. 21 for the saine purpose as the shoulder 2 1. As the grip 3 is made removable from and adjustableupon the tube 2 and the lava and insulation inthe tube may be removed therefrom 'access tothe inner parts may be had without having the sleeve 8 removable from the rear ring 7, and the general construction therefore makes it possible to braze the' ring' 7 and sleeve 8 together, thus leaving only thecjointbetween the tip 17 and between the sleeve or tube 2 and insulation, to 'be guarded. vTlie latter is simply andveffectually accomplished by the-niolded-in ring 49 and the'foriner by the inclined shedding surface 20, the shoul der 21 and the close'contact niade possible byii'he contacting surfaces of the ring 14 and tip 17 as above 'set forth.

'A Workman whose duties take him from place 'to place cannot use the ordinary solden ing irons in all places, because the volta-ge varies on different lines. With the aid of our invention he can use the same tool everywhere lby simply lproviding himselfl with a few varieties of cartridges 9; that is, Y

resistance coils of .vai-ying iresistances or numbers of windings. change' the tip 17 is simply unsci'ewed from the shell andy the cartridge 9- unscrewed from the tip, a new cartridge' firmly screwed.

in ,place and the -whole inserted` in the shell 8. When the tip 17 is turned to engage the `threads on collar 119 and sleeve or shell 8 the' contacts between the'springs 34 and 35 and the phosphor bronze rings 25 and 2G are established and the scraping of tl-ie rings against the springs tends to brighten the contacting surfaces, or remove any film or corrosion thereupon tending to interfere with electrical conductivity. The coil 11 is thoroughly protected against being bruised in 'handling by the shell 12, audjis easily guarded against fumes by the construction which provides the ring 14 at one eiid'of the 4shell and the thinible 22 at the opposite end.

As shown' in Figsl and 2 theinner edge of the thimble is rabbetedvto receive the end of the shell 12 and the parts are driven to- To accomplish the gether so as to Vmake a completelyy air and fume tight covering for the coil.

It often happens that it is desirable to vary the reach of the tool, or to vary the position of the grip with respect to the tip,

and We provide for, this variation by making the grip 3 slidably. adjustable upon the tube 2-an'd then securing it firmly by means ot' the taper threads onthe ring nut 4 and split ring 5v forming an extension of the fei'rnle.

We' claim as new and desire to secure by Letters Patentl 1. In combination, the shell 8pt-he solderin tip, the handle portion, the ivi/reswithin said handle portion having their coil" contact ends projecting/into said shell, and a coil incased by said shell, said coil being removably secured to said tip and having. electrodes which' automatically slip into electrical connection W'ith said' contact Vends.

'2. In combination, the shell 8, the solderinox; tip, the handle portion, the Wires Within saidy handle portion, the seal in said yhandle which excludes air from the coil contact ends of said wires, said coil contact ends projecting into said shell, a coil incased bysaid shell, said coil being removably secured t0 said tip and `having its electrodes arranged to automatically contact With said coil contact ends When thecoil is inserted in said shell 8.

3. AIn 'a 'soldering tool, the. combination Wit-h a resistance coil, itsvcore and contact springs '3f-l and 35, of a heat transmission ring 14 against vthe tip '17 a thimble 22 on the rear endV of said core and coil, and contact rings `and 26 mounted Within said thimble 22, said rings'being electrically separated from each other and arranged in contact WithV the Wiring in the handle, as set forth.

4. .In a soldering tool of the class described,

a heat-transmitting ring in combination With covering 19, on the joint-endet the tip, -conthecore of the coil, said ring arranged to contact With the butt end of the tip 17 around said core; a heat-resisting membercomprising the lava thimble 24 and the means for supporting it upon the rear end'ot the coil and core, coil terminals Within saidthimble, and means for removably connecting said coil With the -soldering tip'and Wiring in the handle of the tool. y

5. In a. tool of the class described, a joint between the tip 17 and shell 8 including' the" 1 ring 19 interposed between said shell-and tip, said ring composed of a material adapted to withstand the action of soldering acids to ahigher degree than the metal in said tip.

6. The combination With the copper soldering tip and the shell 8, of the protecting sisting ofsteel or iron and having` threaded connection with said shell. e

7. The combination with the copper tip 17 andthe core proyided with a threaded nipple and threaded socket oint, of the heattransmitting copper ring 14- mounted on said lcore as set forth lafter formation of the threads on the nipple, whereby said threads may be extended fully up tothe iing when 'l0 against saidl tip t0 form a closure against acids and fumes, as and for the purpose vset fort-h. V

'9. Thel combinationpwith a tool of the class described', of a separate heat-cartridge 9, a soldering-tip 17, means for separably connecting said ltip and cartridge, an acidresisting ring orI band upon said tip, an

outer shell 8 having-threaded engagement lwith said ringfand means for loosely or scparably connecting said cartridge whereby its resistance coil may receive an electric curl90 ren't through the-handle of said tool.

10.. They combination with a.V tool of the class described', ot' a tip 17, a shell 8, a sep- Iarate member consisting cfa' heat-cartridge- 9 including a -resistance coil, means for-scp 95 arably connecting said tip andcartridge, means for similarly connecting said shell -and tip, the latter means including an acidresisting ring 19 secured to the tip and having threaded-engagement. With-'said shell, the 100 contact rings of the coil, heatinsulating sup-l ports therefor forming a, 'part ofsaid cartridge and 'consisting ofthe thimble 24 supporting' andfseparating said rings electrically together'with the thimble 22 in which 105 said thimble 24 is held.' i v 1 11. The combination with a tool of the` class described of the separate heating mem- .ber 9 which consists of a core having aresistance co`il-wound vthereupon and a metal 1 10 shell surroundingsaid coil, and closers for the ends of the coil and its surrounding shell .which .consist vof connections With, respec- 1 tively,tliesoldering tip 17 andthe ends of the coil." 115 12.' In a tool of the class described,/the, combination of the tube 2, the 4grip 3 adjustably, secured to said tube,the lava stick 31V Within said tube, the removable seal 50 and 'insulation 49 adapted, to form an air 120 tight closure for the interior of said'tube', the Wires 32 and 33 having, clips 38 andt) at one end -andl projecting'contact springs 34 and 35 at their opposite ends, the removable coil having contacts adaptedto enl gagesaid springs 34 and 85, the shell 8 inclosing said coil, the .tip 17 secured to said shell and to the core of said'shell removably, and the means *for connecting said clips 38 and 39 electrically, which means comprise 130 the wires 43 and 44 having an irremovably held knot 45Athereon and the loose ends 46 and 47 adapted to engage said clips.`

13. The combination with a toolof the' class described, of the wires Within the handle portion, the ends of said wires being formed into, respectively, the fiat spring" .terminals and the spring-jaw or clip ter-` minals, whereby thefeed wire and coil ,terminals are removably held.

14. The combination with av tool of the class described, of a tubular handle having a pair of conducting wires therein,rthe ends of which wires are confined within the tool,"

and means for loosely'connecting said ends with thev coil terminals and the feed wire terminals, whereby rupture ofthe wires within the handleof thetool, through twist ingor pulling. upon the feedvwires,.is obviated.

15. The combination,with a tool of the class described, of the wires confined within the handle of the tool, the core and coil having terminals which loosely contact. with. one

end of each of said wires, the soldering- `head, the shell incasing said core, coil and part of said head for the purpose set forth, and the means, includin the knot 45 and spring clips 38 and 39, for removably con necting' the loose ends 4G and 47 of the feed wires 32 and 33.

1G. In `a` soldering tool, the combination with the solderinghead and hollow handle, ofa core, a coil wound upon said core, a casing loosely' containing said core and coil and also incasing a part of said head, the

' concentric terminals for the coil, the wires 'withinthe handle wh'ose ends are in the form of, respectively, spring-jaws, or clips, and flat spring contacts with curved tips,

and means for fastening the ends of feed` Wires vto vthehandle independently of the Wires Within said handle.

17. The combination with a soldering tool ofthe class described and its hollow handle, of thewires provided atytheir respective ends with spring'contacts and spring jaws adapted to receive 'the ends of feed wires, the' casing, the core and coil normally contained within'said casing and having the` coil terminals projecting from the endof the core and slidable against the sides of said spring contacts, the feed wires, means f0.1` fastening said feed wires to the handle so that the ends of said feed'wires'are normally free, andthe head having threaded engagement with said core and shell. .A

tube ,2, the wires p 18'. In combination, the 32V and 33, the insulation supporting said Wires withintliehandleor tube 2, the spring contacts formed of the' ends of said wires 32 'and 33, the core 10 having .a coil 11 thereupon, the terminals of said coil consisting of the rings 25 and 26, the .shell 8 incasingsaid j core, the head 17 "threaded onto saidcore,

said head having a threaded portion covered by said shell, and having also an annular shoulder 21 against which the end of saidv shell abuts, and the means set f orth for preventing twisting or pulling of the feedwires out of the handle and for connecting thev ends'of the feed wires vloosely with the ends of said wires 32 and 33. i

In testimony whereof we have hereunto,

presence of two sub-

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