US1644190A - Ignition device - Google Patents

Description

Octc 4,

W. HERMANN lIGNITION DEVICE Filed Sept. 20, 1924 le/"MRR, @MM

W. HERMANN I. IGITION DEVICE Filed sept. 2o. 1924 2 Sheets-sheet 2 Patented Oct. 4, 1927.

' WOLFGANG HERMANN, or caricano, rLLrNors, .assrerion T omer.

'ro Maren v 'sieno-ianrfrns MANUFACTURING'COMPANY, or onicneo, rnnrnes. n conroaerroiv oFILi'iINo-Is.

IGNETION DEVICE. I

Application filed Septemberf, 1924.l Serial No. 738,956.

Thisfinvention relates particularlyto ignition devices for 4use Vin connection with` electriccigrar lighters, and thelike. ,xfilfheprimaryobject is `to provide a-simple and Limproved vdevice whose parts can be formed and assembled with great facility.V

.A further Objectis to provide a ventilated `body of yinsulation material which serves as .a mounting `for the `resistance element and the circuit closing device. A

The invention is .illustrated in its `preferred embodiment yin .the accompanyingr drawings,in Which- Figure l.illustratesbrokenly cord-Winding' v.means and a cigar lighter associated therewith` the device :being welladapted to serve as a: cigar lighter for use in connection with :an automobile; Fig. 2, .an enlarged sectional View of the ignition device, `or tip, shown .in Fig. l; Fig. 3,:a1sectional'view yof a `suit able form ot handle for .the ignition y'device; Figr 4, a front side view of the ignition device.; Fig. 5, .a rear side view of the same; Fig. 6,3 rear view of the insulation body employed andthe socket member with whichl Y itisequipped; F ig 7 a view of a spider-like device.

' comprises astubular member Z having secured guard, or protecting;` plate, .with which the resistance -elementfisequipped ;.Fig.k 8, ay view of a spider-like insulation member; Fig.9, .a- .view/oa` Washer ,employed in the resistanceelement assemblyFig l0, a view of the `resistance wire; F igll. a view of an insulation. member employed; Fig. .12. al rear view of amodiiied form .of .the ignition device; .Figla section taken as indicated at line 18 ,of Fig. l2; and Fig. 1.4, .arbroken prospeo .tiveview of aspring segment 4employed as a circuit closer in .the .modified form of the In the construction illustrated in Figs4 l to ll inclusive', A represents a portion of a vcordswindin-g device mounted on a dash B; `C represents a. handle, or socket-device, ywith which is connected arcord l which includes l the-electric wires; and D represents the iin- .proved ignition device which `is Iadapted to the handle,` ,or socket, C.

TheV device C, vin Ythe A'illustration' given,

inlon'e tliereoin metallic socket 3, 2in

fber 3.

the illustration fi/viven,` the socketS isgpro-` vided internally with a thread 3a adapted to receive the threaded shank of the ignition device. The member ..3 is shown provided with aniinsulated central contact-4 the Wires la and lb 'of the cord are shown connected, respectively. with the socket memberg and thecentral terminal 4f. Y- r The :ignition device D -preferablysoonprises an insulation body 5. Thisbody zis inV the vform of a .suitably shaped disk 5` having a vfront peripheral liange bqand a rear peripheral flange 5'?. The fdiskziS fillther provided at its :trontside witha ,central lhub-like projection 5d andat. its lrear vSide `the disk has afcentral stem 5e which is iencircled by a metallicsoketfmember The member 6 preferably is secured in position in the operation' of molding the body'. The member .6 preferably has an externa-l flange 6@ at its front end which is'embedded so as to lie liush with the rear surface-ofthe disk portion 5'L1 of the insulation body. The member 6 is of'general tubular form' and Apreferably has a taper bore 161?, .which, :inI` the soldini; operation. becomes `filled `with the .insulation material. The bore converges forwardly, andthus the shank 5e is enlarged at .itsrear end so that .it-cannot be forced through .the tubular member whentthe ignition device is-screwed `into the sooketmeml VThe' resistance element assembly is-design nated 7. It comprises a spiral lresistance wire 7a, an inner insulation disk byanfouter spider-like insulation disk 7, airing Winton' posed between the insulation disks', Land a spider-like guard, or retainer, Zewhicliimay be l'orm'ed of sheetemetal. Thedisks 7b and 7C may be formed of mica. Thevspiral :re-v sistancewire .7a has a `,ireamvardly turned' outer extremity Tf and a rearwardly turned inner extremity 7g. The inner extremityextends intoia-small tubular member 8 Iwhich forms a part of the central terminalfo-:the device, `the rear end of the member 8 re` ceiving a screw 9 which extends throughthe insulation shank 5e andvwhose head is adaptev ed 'to contact with-the central contest of the device (la The extremity' T5 the Wire is secured in the tubular memberl by a wedge-pin 10. The parts are secured together by bending the arms 11 of the blank 7e rearwardly about the edges of theinsulation disks and the interposed ring and bending the extremities of the arms inwardly so as to engage the rear surface of the underlyirg disk 7b.

ithin the front flange b of the insulation body 5 there yis afforded an open chamber 12 which is adapted to receive the resistance element assembly. The central portion of the disk 7b is provided with al per- 'foration 13 throuoh which the sleeve 8 extends, and the sleeve 8 preferably is provided with a flange 8a which overlies the central portion' of the disk 7b. The wire ele- Ament 7al lies within the plane of the ring 7rx and between the planes of the mica disks. The insulation body 5 is provided .with an annular recess 14 which encircles the hubportion 5d, so that an air space is provided -back'of the plane of the resistance element assembly.

The insulation body 5 is further provided kwithin the rear flange 5C with a shallow chamber 15 in which the spring circuit closer is mounted. There extends through thedisk 5a an eccentric metal bushing 16. The outer extremity 'Tf of the resistance wire extends through this bushing and is secured by a drop of solder 17.

' The insulation body 5 is further provided with eccentric y Ventilating perforations 18 which are located inside of the flanges of the body. Located in the chamber 15 is a spring segment 19 which has one end connected.

'provided, and having at the other with the rear end oi' the bushing 16 and thc other end connected with a metallic push button 20 which is adapted to work freely through a perforation in the rear flange 5 of the body 5. In the illustration shown in Figs. 2 and 5, the spring segment 19 is in the form of a curved piece of wire having at one end a hook 19a wich engages a slot with which the rear end of the bushing 16 is end a hook 19b which engages an annular slot with which the inner portion of the push button 2() is provided. In the form of device being described, the spring segment 19 serves to hold the bushing 16 in position and also to hold the push button 20 in position` The spring normally holds the push button out, or away `from the circuit closing position. When the button is pressed., its inner end makes contact with the ange 6' of the `metallic socket member 6, and thus the circuit is closed.

In the modification shown in Figs. 12-141, the tip, or ignition device, is designated D. The device is like the one previously described, except that the bushing 16 is replaced by a metal insert 21, and the wire circuit closer 19 is replaced by a sheet-metal spring segment 22. One end of the segment is secured, by a tubular rivet 23, to the insert 21. The other end of the segment is provided with a- U-shaped yhead 22a, one flange of which is provided with a perforation 22h to which is secured the inner end of the push button 20a. The pushr button extends laterally through a perforation in the wall of the insulation body. Normally, the circuit is open, but when the push button is pressed inwardly, the circuitcloser 22 is forced into contact with the iange 6aL of the socket member 6.

Each of the constructions described provides a main insulation body which serves a mounting for the resistance element and switch device and which is directly provided with a shank, or socket member. adapted for connectionwith any suitable socket device, such as the device illustrated in Fig. 3. VThe insulation body, or tip, is itself of a composition adapted to resist the'transmission of heat. ln addition, the Ibody is well ventilated. Such a construction enables the tip to be held in the hand while the ignition device is being` used for lighting a cigar, for example. The construction renders entirely practicable the use of a switch device .in connection with the tip itself, and distinguished from the usey of a switch in the handle, or a switch in connection with the mrd-winding device.

The foregoing detailed description has been given for clearness of understanding only` andV no unnecessary limitations should he understood therefrom, but the appended claims should be construed as broadly as permissible in view of the prior art.

That l regard as new, and desire to secure by Letters Patent, is:

1. A device of the character set forth com prising an insulation disk equipped with front and rear flanges and affording front and rear chambers, a metallic socket member projecting from the central rear portion of said body, said socket member being provided with a taper bore, insulation material in said bore, a centralterminal extending through said body and through the insulation in said socket member, an eccentric metallic insert extending through said insulation body, a resistance element mounted in the front chamber and having an inner extremity connected with said central terminal `and an outer extremity connected with said eccentric insert, and affcircuit closing de1 vice mounted in the rear chamber and adapted to effect closing of the circuitfbetween said eccentric insert and said socket member.

2. A device of the character set forth comprising an insulation disk equipped with front and rear flanges and affording front and rear chambers, a metallic socket member projecting from the central rear portion of Said body, said socket mernber being provided With a taper bore, insulation material in said bore, a central terminal extending through said body and through the insulation in said socket member, an eccentric metallic insert extending through said insulation body, and a resistance element mounted in the front chamber and having an inner extremity connected with said cenl0 tral terminal and an outer extremity connected with said eccentric insert.

WOLFGANG HERMANN.

Images