US1613040A - Flash igniter - Google Patents

Description

l 4 Jan 1927 .0. J. LElNs FLASH IGNITER Filed Jan, 21. 1924 l 45 guiding and Patented Jan. 4,1927@ i 1,613,040 f UNITED- s'rATEs PATENroFFicE. y

OSCAR J. LEINS, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO MILWAUKEE GAS SPE- CIALTIES C0., OF MILWAUKEE, WISCONSIN, A AGOR}`.ORA'1ION'OF WISCONSDT.

'FLASH IGNITEB.

.Application med January a1', 1924. senin no. canso?.

My invention relates lto flashigniters'for gas burners and the like, and more particularl to flash igniters of the reciprocable as i distinguished from the rotary valve type. The invention is illustrated in the accompanying drawings, in which: Figure 1 is a side elevational View of an igniterembodying the invention; Fig. 2 is an enlarged longitudinal section l0 through the valve and firing tip of Fig. 1;

, Fig. 3 is a transverse section through the plunger housing on line 3--3 of Fig. 2.

. Fig. 4 is a fragmentary side elevational- 'view of amodified form of firin tip; and Fig. 5 is a top plan viewof t e tip shown in Fig. 4.

In the drawings the Valve cage Aor casing 5 is mounted'directly on and opens directly into the fuel supply pipe 6 which may be the main gas supply pipe of the stove, for

example.

Cage or casing 5 constitutes the plunger housing. It -is formed of standard'hexagon stock, preferably brass, and comprises an intermediate hexagonal faced body portion 7 having an upwardly extending tubular rejection 8 and a depending nip le 9 threaded at 10 into supply pipe 6. Tu ular rojection 8 and nipple 9 are coaxial and both are eccentricall disposed with respect to the intermediate ody ortion'7 to leave suicient stock to one si e of the common axis of projection 8 and nipple 9 for a union fitting for the torch tube 12 which leads to the firing tip or head 13.

. The lower end of cage or housing 5 projects into the interior ofpi e 6 ,and forms a seat engageable by lthe .hea 14 of a plunffer `valve 15 whose stem 16 extends upwardly through chamber 17, slidably through a guiding and packing seating flange 18 and ,up throughl a chamber 19. Chamber 17 is bored u axially through nipple 9 and up into bo y portion 7 to the annular plunger v packing seating flange 18 and chamber 419 is lbored down through tubular projection 8 to flange 18 and coaxial with chamber 17. The diameter of bore 17 is larger than the diameter of stem 16 and forms an annular passage or chamber about the stem. A duct 20 o ens from chamber 17 into tube 12, said tu e having its valve end flared -out at 21 and secured ina transverse threaded bore 22in the off center body ,55 portion 23 by a union nut 24 threaded'into lthe upper end of "stem 16 and is` slida bore 23 and provided with a hexagonal head 25. e

A passage or duct 26 axially through the head 14 and stem 16 opens into annular chamber 17 through a-transverse duct 27 and with duct 27 constitutes a b -pass through which a restricted flow of uel is permitted to ignitin'g tip 13 to maintain the small pilot light which normally 4issues therefrom. .s The restricted or b -pass supply from duct 26 vthrough duct 2 and thereby the pilot light at the jet is decreased or increased by a valve pin 28, havin a lower needle end for .metering the fuel ow from duct 26 to tube 12 and having threaded engagement at 49 with the interior of the upper end of stem 16. At 50 the threaded ortion of pin 28 extends loosely through a utton 51 and has at its upper end a head 52 which fits in a recess 53 in the head of button 51', head 5 2 having a screw driverV slot 54 for threading it into and yout of stem 16, and j the lower end of duct 26 terminating 1n a: screw' driver slot 55 for` threading the plunger into button 51. 4

The shank of button 51 threads at 59 upcn mounted in bore 19. The upper surface of v lannular'flange 18 is inclined outwardly and seated upon said surface is 'suitable packing means 56 in the form of a fabric or fibre `washer anda metallic ring or washer 57 is arranged about stem 16 upon packing 56. Button 51 is normally projecte upwardly and head 14 into closed engagement with the inner end of nipple 9 by a coiled's ring 58 interposed between washer 57 and t e inner or lower end of the shank of button 51 and fitting at its outer end into a recess in said button. V

The tip 13 shown in Figs. 1 and 2 is enlarged at its inner end and threaded at 60 upon the outer end of tube 12, and is tapered outwardly and rovided with outlet ports 61 which preferab y correspond in number to the number of burners; etc. grouped about the igniter and so4 alignedv that an i uiting flame will be projected upon each urner of the groupl when the Valve is operated.

The jet may be a single or multiple one and may be with or without a protecting hood, as desired. l'

In Figures 4 and 5 the outer end of tube 12 is turned up at 62 with the tip 13 disposed vertically instead of horizontally and provided as before with outlet/ports 6l through which the flame is directed toward the desired burner ,or burners.

'In operation a small pilot light is normally maintained at the jet bythe passa e of uel lfrom pipe 6 through ducts 26 an 27,

. chamber 17, duct 2O and tube 12 to the jet.

The size of the normal pilot flame may be adjusted as desired by screwing pin 28 into or from stem 16. To ignite one or a plurality of burners, button 51 is depressed to unseat valve head 14 whereupon the fuel supplied to the jet is directly through the open end.v of plunger housing 5. This increases the supply to the jet and projects a long slenderciiame to the burner or to a number of burners for lighting same. A

It should be noted that the interior of the supply pipe itself provides the necessary clearance for th'e reciprocable movement .of

. plunger head 14. There is no valve'body between the plunger, housingand the supply pipe and the number of joints whichA must be kept tight and the number of parts are therebyminimized. The nipple 9 and projection 8 which are coaxial with respect to each other and formed eccentric with respect to body portion 7 as for example on an automatic screw machine, or otherw1se, lends.

@a valvev cage having a nlpple threa ed dir'ectlyv into said pipe, the inner end of'said?` I nippley forming a valve `seat within thesupply pipeand valvel means mounted directly A1n lsaid cage, cooperable with said seat andl reci rocable within the supply pipe for conl' trol ing the fuelsupply to the firing head.

' 2. 'In a device .of the class described, a valve cage formed ofjnoncircu1ar stock with an eccentric nipple projecting from one end .and threaded to be screwed directlyinto a tapped opening in a supply pipe, anda tu. bu ar projection coaxial with respect to said nipple projecting from the opposite end of said cage, a torch tube opening laterally into the valve cage through the off center inter# mediate ortion thereof and a valve mounted directly m lthe valve cage, said valve being Y reciprocable within the supply pipe and coo erable with a seat on said-cage for controlling the fuel supplyto said vtorch tube.

3. In a device of the class described, the

Acombination of a supply pipe, a valve cage the class described-the i t ing means.

Aing a valve seat within the supply pipe and being bored. axially up into the intermediate body portion, the tubular projection having a coaxial bore, an intermediate guiding-and packingl seating flange between saidbores, a torch tube opening laterally into' said first, bore, a -reciprocable plunger mounted'directly in said valve cage, said plunger ex tending axially through said bores and said intermediate flange and having ahead at its' lower end reciprocable in 'the supply pipe and coo 'erable' with the inner end of the.. threade nipple, packing on said' annular flange `and about the plunger, a push button on the upper end of the plunger said button having a shank reciprocable within said second bore, a spring inte osed bet-Ween the annular 'flange and sai button, by-pass means openingv from the supply pipe to'the torch tube when the lunger head is in engagement with the nipple, and a metering pin threaded into said plunger yfor ad'usting the normal by-pass iiow of fuel, sai ,pin having a head fitting in a recess in the push button. 4. In combination, a suppl pipe compris'- ing a lrelatively thin. Walle tube, a valve cage threaded directly into saidl tube and forming a. valve .seat within the tube aY 100 plunger valve mounteddirectly in the v a ve, cage and having a head cooperable with saidseat and reciprocable in the tube, said ca el having a, .bore"surrounding said;valve, pac ing meansin lthe cage along-the lunger for sealing said bore and a torch tube attached. directly 'to' said cage and opening -into said bore between the supply pipejanfd'saidpack- 5. In-a device of .the class described-1113110 valve cage-having an intermediate 0E center'jl-'f portion, a .reciprocable controlling valve mounted directlyin said cage, coaxial projections extending from opposite ends 'of said intermediate portions eccentrically. thereto, oneof said projections being adapted for direct connection with ajue supply pipe a push button mounted on the valve member and reciprocable-.in the other 'pron jection' and-a torch tube mounted in the of l2" center portion of the cage and opening thereinto. l ;--1' .4 1

In witness whereof, I hereuntosubscribe my name this 17 day 'of January, 1924.

, l v osca'n amants.- .l

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