US1654265A - Cialty co - Google Patents

Description

Dec. 27, 1927. l 1,654,265

0. J. LEINS TIP FOR IGNITING DEVICES AND THE LIKE Filed D60. 22, 1924 mmummu Patented Dec. 27, 1927.

UNITED STATES PATENT OFFICE.

OSCAR J. LEII TS, F MIL'V/AUKEE, \VISGONSIN, ASSIG-NOIR. TO MILWAUKEE GAS SPE- CIALTY (30., OF MILWr-"k'UKEE, WISCONSIN, A CURPORATION OF hVISCOhIfiILhl'.

TIP FOE, ItFi-NITING DEVICES AND THE LIKE.

Application filed Decemher 22 1924. Serial No. 51 ,503.

My invention relates to tips for igniting devices and the like and its ohjectis the provision of a generally improved simple and inexpensive tip having; relatively great structural strength combined with relatively high heat and flame reaieting qualities.

The invention illustrated in the acconipanyin gg drawings, in which:

Figure 1. is an enlarged fragmentary side elevation oi. the i-iutlet tube 01' an igniter aborting a tip embodying my invention thereon;

Figure is a longitudinal section eubstair tially centr= lly through the tip and ad jacent end of the tube;

lfl' g'ures It and i: are longitudinal sections no antially centrally through the tip proper and nut respectively;

li igure i is an end view of the tip proper looking); from the rightin Figure 3, and

l igrure 6 is a longitudinal section substantially centrally through another form of tip.

lu present day practice, tips of this sort are usually made of a material having; sutlieient strength and body to permit convein lent cutting therein ot the internal threads for or BlIlQill. with the external threads on the outlet tube of? the ignlter and to carry said threads without stripping in assembling the device or threading the tip upon the iguiter tube. Brass has been commonly employed. llecauee of the fact that it is an alloy of relatively high specific gravity, certain negative phases are encountered, namely. the flame temperature is somewhat reduced because of the brass conducting heat from the flame to other parts (it the ignite]: Also, hrass being an alloy containing low melting; point metals thcee melahi Where gas of a relatively high ll. t. u. ia eiu-oimtcred melt or teiul to disintegrate out of the alloy, causing premature b1 airing down of the tip. ltlso, because oi the apecilic heat factor of brass, when ii'npiiirities are encoiultercd .in the gas. or other fuel, that is being burned, l lind that a deposit oil ash or pure carbon or partly consumed hydrocarbons takes place on the tip. These disadvantages are, of course, all undesirable.

l find that all other materials having the desired structural strength and body to permit convenient threading and. to carry the thread against stripping have generally the above disadvantages, and I propose to pro vide in a tip of this sort a material of great structural strength and body along the threaded or nioui'iting portion in combination with another n'iaitcrial of relatively high heat and flame resisting ipiafllitiee along the outlet orjitice or orifices. Ahnniuum seems to overcome all oil the heat and .llalue difliculties of brass, but cutting); of the threads therein ith dijllicult and alter the thromls are cut in such material l find that they are very readily Stripped. In the dra lugs, the outlet tube of the 1gniter is dc m iated at and said tube is sbo W11 threaded cxtern ally at its outer end at (l to receive tip designated generally at 'l'. The tip 7 comprises a nut olfuunultiug por" tion 8' and a tip proper 9. i

The not 8 is of a material having struc. tural strength and body sulllcient to permit convenient fori'ning ot the threads 10 therein and to hold. or carry said threads against stripping, thie part oi the tip boiler-pretcrahly of brass and it may he inexpensively and conveniently formed on a screw machine. internally, the not 8 is shown as hemp; ot

hexagonal torniation at or otherwise formed tor engagement by a wrench or other suitable tool :Iior tl'ireadin r it on and oil the tube 5. and at one end said not 8 has an inwardly turned or extending: annular flange l l otl'eet at ll and provided internally with a tapered surface 15, the internal threads 10 preferably exteiulii' to or Saulietantially to the internal tapered surface for a. purpose which will hereina'lite appear.

'lfhe lip proper 9 is oil a. material i la vino; high flame and heat reeisting properties, preferably aluminum. This part which may be inexpens vely atampcd tron] a suilalilh billet has a base flange ill and is hollowed out internally at ll. ll tapered sin-taro 18 between the periphery 11E) of the lip proper and the periphery of? the base llan ie in has substantially the same inclination as the interual tapered surface .15 to seat snugly and tightly thereon when the two parts are assembled. The two parts are i 'blcd by inserting the tip proper 9 into the nut part 8 and swaging it into the position shown in Figure 2, the tapered surface 18 seating tirinly on the internal tapered surface 15 and the periphery of the base flange 16 being sivagged up tightly upon the surface 5 and into the adjacentinternal threads 10 and by such engagement therewith securing the parts firmly and tightly together. This provides till llltl llU a simple and inexpensive yet highly effective union of the two parts. The periphery 19 of the jet proper 9 is preferably tapered slightly and the bore opening 25 in the nut part 8 preferably of a diameter slightly less than that of the inner end of the periphery 19 so that in swaging or pressing the two parts together the opening 25 will conform itself to the periphery 19 .and fit snugly thereover.

The flame or pilot orifice or orifices 26, as the case may be, open outwardly from the interior 17 of the tip proper 9 and are preferably drilled afterassembling or uniting the two parts. A tip is thus produced having a material of high flame and. heat resist ing qualities at the flame or pilot orifices and a material of relatively great strength and body along the threaded portion and the union between the two is simple and inex pensive and provides a tight joint and in effect a one-piece tip.

Any suitable number of outlets or flame orifices 26 may, of course, be provided. In

Figure 6, I have shown another form of tip proper 9 having a reduced closed end 28 projecting therefrom through which a sin- 'gle outlet or flame orifice is formed after assembling the parts as indicated in dotted lines at 29. The tip shown in Figures 1, 2, 3, 4 and 5 is especially suited for use Where manufactured gas is employed while the tip proper of Figure 6 is especially adapted for single flash igniters and for use with natural gas, but it is to be understood that either tip may be used with any sort of fuel or wherever-found desirable. The aluminum at the flame or outlet orifices minimizes the reduction of flame temperature and the heat that is conducted to other parts of the igniter, avoids premature breakingdown of the tip, because of melting or disintegrating of certain elements thereof and minimizes the ash, carbon and other deposits, while the brass along the mounting portion takes a good thread which will not strip readily.

I claim:

1. As an article of manufacture, an ignitcr tip comprising a brass nut adapted for engagement with an igniter tube, a tip of aluminum forming the outlet and having fixed pressed fit in and integrally joined to and sealed in said nut solely by the interengagement between the tip and nut and common means in said nut engaging the pressed tit portion of the tip and opposing longitudi-- nal displacement between the nut and tip in opposite directions.

2. An ignit'er tip comprising a nut having an internally threaded recess adapted to be threaded upon an igniter tube, an annular flange defining a reduced opening at. the outer end of the nut, a tip part fitting in the nut and having an externally tapered outlet extending through said nut opening and having pres ed fit therein. the extending outlet of the tip part having oritiee m ans adapted to open from the igniter tube and a flange on the inner end of the tip part co-operating with the nut flange and s aged up tightly upon the nut flange and into fixed engagement with the threads in the nut part to permanently join and seal the joints between the nut and tip parts and provide in effect a one-piece jet.

An igniter tip comprising an internally threaded nut formed of material of relatively great strength and body and provided with an annular flange at one end and a tip formed of relatively softer material ot greater heat and flame resisting properties extending through the flanged end of the nut and having pressed fit therein and a flange at the inner end of the tip swaged into eugagen'ient with the nut: flange and with the the adjacent internal threads of the nut.

l. As an article of menu lact ure, an igniter tip comprising an internally threaded brass nut adapted to be threaded upon an igniter tube and an aluminum tip with a relativetv thick outlet having fixed pressed tit: in the nut with the joint between the nut. and the tip sealed independently of the. igniter tube and a relatively thick flange at the inner end of the tip swaged into engagement with the adjacent internal threads of the nutv In witness whereof, I hereunto subseribe my name this 1.8 day of December, 192i.

OSCAR .l'. LEINS.

Ttl

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