US1084815A - Igniting device for internal-combustion engines. - Google Patents

Description

J. G. NEWMAN. IGNITING DBvIoE PoR INTERNAL coMBUsTIoN ENGINES.

. .IPPLIuATIoII FILED Dnc. 1e, w12. 1 684,815. Patented Jan. 2o, 1914.

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JOHN GLEN NEW-MAN, OF MILSONS POINT, NEAR SYDNEY, NEW `SOUTH WALES,

AUSTRALIA. y

y `l"'raurr-1n'e`nnvrcn Fon INTERNALCOMBUSTION ENGINES.

'Speeication of Letteiii'atent.

Patenteaaan. 2o, 1 ari.

Application led December L16,- 1912;' Sei-tal No. 736,914.

To all whom t man; concern: i

Be it known that I, JOHN GLEN Newt/IAN.,O

Milsons Point, near Sydney, in the State of New lSouth Wales, Australia, haveinvented a certain new and useful Improved Ignitin which the following is a specification.

y,Device for Internal-Combustion Engines,

-My iinvention relates to that .type of de-y charge v in an internal 'combustion engine 'AF-whereinthesparkr isstruck at the proper r`vice dfor producing lsparks for-igniting ,the`

l firing 'time internals bythe frictional contact ,of anfalar-adan surface upon ya piece of pyro- "pho'rici material.'

l.The objectof the invention is toprovide a certain construction of device of the type' mentioned wherein the necessity for replac ing the pyrophoric material frequently is avoided byv forming the same in a special 'shape which presents an extensive surface to be acted on by thestriker and using a Special form of striker, whereby a large body of material is renderedfavailable and an extended life of a single charge of pyrophoric material 1s thus procured. In carry ing out my said invention the pyrophorlc material is molded 'in the form of a hollowcylinder and the Striker acts against the end of said cylinder, sectorv by sector, as the parts are moved relatively to each other at properfiring time intervals. Such a hollow cylinder will contain a body of pyrophoric material equal to the bulk ofmany pencils such as are used lin other constructions of such apparatus. In the. preferable forni oi the abrading device orstrilter said device consists of a disk having two otl'sets on its end, one of which is a smooth face sector of hard metal which acts asa .gage and the other an insert of a slow wearing abradant, such tor instance as hard einery or carborunduni, or a jewel. In the otherforni a jewel or sca'tch point Vof hardened l,metal or ot carboruiulum, einery or like hard sl.ibsta1ice is carried in the end of a holder, and acts against the end of said hollow cylinder malrother. Y ln the accolnj'ianjving drawing is a .sectional elevation.;

lof a hollow cylinder 1. i shown in Fig. l this hollow cylinder is fixed sectional elevation showing the disk form ot' Striker with gage; Fig. 3 sectional ele ation Showing the jewel vpoint form of striker;

Eig.' transverse sectional elevation show-Y ing the operative relation vof the jewel striker t0 the pyrophoric cylinder; Fig. 5

semidiagrammatic view showing mechanism for moving the striker or the pyrophoriccylinder; and, Fig. 6 detail View of the spark, advancing and retarding mechanism in `connection with the striking cani by which the. mechanism is operated.

In the case of either construction, `the pyrophoric material is molded into the shape In the arraiigement in the forward end of a sliding carrier which is pressed forward by a helical spring 3 setting `back against the cap 4, which cap is fitted with wings 5 to enable .it to be screwed at G on to the pocket extension ot the plug V8. t) is an offset pin or sinking slidable in a slot 10 to hold the slidingcarrier 2 against rotation in the pocket 7 while permitting it to slide im-vardthercin under the pressureof the spring ,3. In this construction thestriker consists of a disk 1l mounted on the end of spindle 12. At one part of the face of this disk there is an otl'- set piece 13 polished on the face which rubs against the end of the pyi'ophoric cylinder 1 and `acts a gage for the striker insert which is a piece of hard einery, carborunduin, or steel with a roughened face or other suitable abradant. The operating mechanisin, which is separately described below, acts to partially rotate the shaft always in one direct-ion at proper timing interrals,

thereby causing the alnadant insert ll to' rub over a sector of the pyrophoric cylinder l, and in so rubbing to strike a spark.

In the arrangement shown in Fig. 3. the pyrophoric cylinder 1 is mounted on a fixed carrier L1 the stem of which is fixed in the back nut 16, said nut being screwed at .1T

into the casing 18, wings 1S) being provided corea' 2E) is removed the .fpring 2 and cai,

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said j cylinder at 'rier 21 and also the abradant striker 24 which is fixed4 in the forward end of the part 2l maybe withdrawn and replaced. The abra- 'dant 24 'may be hard carborundum or emery ora jewel or a serrated end of hard steel. TheV operating mechanismV is in this case tted' 'on the spindleA 25 which carries the .pyrophoric cylinder holder 15. This mechav .nisn separatelyy described operates to move l 19:

bears on the back of the pawl 40 and keeps same in contact with the detents on theedge of the wheel 44.

friction. The rocking' arm 38 carries a tappet piece 47 which is acted` upon by y,the

pawl, or cam 48 on the collar49. This coliar slidable endwise on the half time 'shaft 50 of the engine and a helical-feather way or key 51 on said shaftcoacts with'the complementary partof the collar 50, so that when said 'collar 50 is moved lengthwise of the shaft it is turned'relatively to the shaft.

This endwise movement -o' the col/lar is eifected by means of a fork, not shown, which engages the groove collar 55. A spring y5G is provided to fhold np the outboard end of the rpckingarm 38 to any fixed part of the engine structure. v .l

roper timing intervals` p This wheel is keyed on the' outboard end of, the spindle 12 and said spindle moves in its bearing with a. little the spindle of said.

What :I claim as my invention and desire to secure by Letters Patent is 1. lAnigniting busti'on engines comprising a' der of pyrophoric material, afvstriker bearing lightly against the end of said cylinder, and means for eiectin relative movement .of said cylinder and strlker while maintaining them in light frictional contact.

2. A11 ignitlng bastion engines, comprising a hollow cylinder of 'pyrophoric material, a striker in ight frictional contact therewith and means for moving said striker-at firing time intervals over the end of said cylinder.

3. An igniting device yfor internal combustion engines consisting of a hollow cylinder of pyropl'loric material held in a slidable but n'onrotatable inclosed carrier, arstriker disk having on its face a gage offset and a `striker offset of abradant material, and pawl and detent operating mechanism acting on striker disk, actuated by the engine, and operating to partially rotate said striker disk at firing time intervals.

4. An igniting device for internal combustion engines comprising a hollow cylinder of pyrophoric material, a striker, means for holding said striker against the end of said cylinder, and means for eiiecting the relative movement of said cylinder and striker without interrupting the operation of said holding means.

In testimony whereof I have afiixed my signature in presence of two witnesses.

JOHN GLEN NElVMAN. lVitnesses l/V. I. Davis, S. BECK.

Gopies of this patent may be obtained fori'l five cents each, by addressing the Commissioner of Patents,

'\ iWashington, 2D. G.

device for internal comhollow -cylindevice for internal com-

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