US1043221A - Gas-engine. - Google Patents

Description

A. M. GIBSON.

GAS-ENGINE.'

APPLICATION FILED JAN. 4, 1909.

1,043,221, Patented N0v.5, 1912.

4 SHEETS-SHEET 1 A. M GIBSON.

I GAS ENGINE. APPLICATION run In. 4., mos.

' 1'',04'3321. Patentd N0v.5,1912.

4 sums-sum 2.

v A. M. GIBSON.-

' GAS ENGINE. APPLICATION FILED JAN. 4, mop.

mm v1m. 5, 1912 A. M.- GIBSON.

GAS ENGINE. ufnmnmn run an. '4, 1901).

' v Patented NOV. 5, 1 912.

4 BHBETHEI BET 4.

" im e' s or-cmei mun-am. I

( mme s pecliicetion of Letters f aunt.

Be it known that'iI, ADAM M. Gmsoii; Ia,

citizen of the United States','residing at Chi-l *eago,

in the-'ceunty of Cook'a'nd State of Illinois, hai e'j invented certain new engine and has for its ob]ect-tc provide an engineof. the

explosive type which shall be simple and into construcfleconomical of incl;-

minimized. 'More particularly, the invention has for an object to provide a; twotcycle, explosive' engine 'provided with an exheust port, the I eifectiye size of which canbevaried'aecordF' ing toithe speed-at which theengin'e run-' this const-ru ning;

the expnlsionbf allofthe burnt to obtain gases, even when the speed is high,1.a-nd' to appreciable. 'escalpe v y 4 qt-lomofjthe' exhaust valve; and Fig;-5 isfe prevent et all times any of the charge.

i The invention hes for n fllrthertobject to Y modified Construction; of; thefrfee'tl cylinder.

nrow ide a peculiar"construction.'for the ex- I blosl'on cylinder; and a peculiar-location of the intake and exhaust ports of thesam'e, whereby the incoming charge efl'ectnellyex- 'pels the burnt charge.-

The invention -"'has .f0r a inrther object to proviclea' fee'cl cylinder having a; piston workin sinuiltaneously withIt-he piston of the exp osi'on' cylinder,:thje feedeylinder' being so connected with theexplosion cylinderthet the charge first-drawn into the feed cha her is compressed. and forced: into "the expilcsinn-cyllnder under pressure, thus nsur ng the expulsion or the. burnt gases anclthe 'p b'sion cylinder, measured by.correspondinflg positions ofthe respective pistons; and I f ,throat' 20, preferably;

- th'eintake p0rt '21,i-whichis controlled-by the Irieens may be provided {for varying-these itective volumetric contents or the feed-cylintler inordert'o vary the pressure a't whic the charge is int-reduced into the explosioncylinder.

The invention livrther ccntetnplaiteshn ranging the-two cylinders in li ne witheach ether and employing a' sisting of a single, rigid 'structure,'and"1onr=,

nalinglthe crank shaft- I ton and out of linewiththe'cmnecting rod."

and; use-f ful' Improvements in- Gas-Engines, ofwhich the following i'sa, specification.

My invent-ion relates-to 'a'jgas y e? as in the claims appendedlthereto.

ct-ion' making .it possible filling of the explosionbylinder with; ire sh gas. To this end, the feecl "c'yllnder 1s, n'tieferably of greater yolumexthanWthe e'x-Q I proper time,

s t n x i I I aises; a

. f the. pie;-

The invention-he'siforla. secondary, but

.nevertheles's'fim ortant 'objeetfto provide a; in vvf icht-hedr-iyen-sliaft may be I Q S Clllat eil back and forth; '.less than" a. full Fr'ew olution, when .desired,..insteed. 10f being" rotated r continuously in "the same direction.

gas engine The inventionfhgsfor further objects such and errangement's in' gas "enginesg 'a'nd -paliticnlarly 1n gas engines-of the; two-cycle will be described 'inithe epcolnp any}- new and improved constructions;l ideviees 5 One embodiment} of. m'y i n entiojn, is shown.- m1

wherein +4 i F gure' 1 is "a; r sidef f'elei'etion' of" a g s en :gi ne of the two cycle'type, -,'para-tus and its" circuits =be1'ng,

shown indiegrem. Fig.2 is'ziipl a'n viewjof I however,

the engine. ;Fig. .3'is a longitudinal, ver

ig iti n P.-

tical section; 'Fig;l4 is e'd'et-ail, cross seedetail,= longitudinal se'cti'oni,illustrating a Lik characters. of referencejind we like; 3

.pzirts in I the several figures. of the A represents the-explosion cylinder, Bthe v I a connecting nipe'leading' from the-letter tb the former,'D the double ra wing's.

piston, Ethe spark coils andzF the battery for these-me. Theexplosicn cylinder A is constructed;- as here-shown, of the; castings l0 and 11, the g I -Water chamber '12-, to which leedt-he pipesj former "provided with the 13., The cast ng 11 i-s' perforated fen-the. stem 1415f the intake} valve 1'5 the Valve being heldegeinst its'se'atjlfi by,a.spring :17 abutting against anfadjustable;nut 18, which The end of might be. employed.

of less diameter than check valve. This contr'ectetl throatis-pro-Y duced,j-as I haireshown it,'by c aus ngther ,cylinderto,taper'eti'theend. y

.The charge, itjwi-ll be understood, is com-- pressed in the Lfeed 1 cylinder and, at the r wed, through theiconnectlng into the explosion. cylinders-a t theend thereof. Thecontracte'd throat of the cylinder causes the: incoming charge to. be concentrated directly back of thebod-y of'burnt gases and the-Widening of the cyl-i inder beyond the thro'atcauses jas I'appr'e bend it, a's'preading of the incoming gases' behind and -against the burnt charge, with "the result of. 'very effectively expelling all of the burnt gases from the explosion cylinder. 4 The exhaust port 22 extends through the under side of the cylinder and is located preferably at some little distance from the end pf the-cylinder. One of theiinportant objects of my invention is to provide means" .for varying the effectivesizeo'f this port in accordance with the speed at which the englue is running." To this end, in the construction shown, a valve casing-23 18 provided on the under side of the cast ng 10,

- in which i sflocated a rotatable valve a pre ferred construction of whlch isshown-in ,i Figs. 3 and a. The Valve consists of the. end

pieces 24,24 connected by the segments. 255 25, which are spaced apart, making a port 26 of the same width as port22. -Th-is valve piece'is mounted on a shaft '27. on which .is

. pinned a disk '28, which closes the valve --chamber- :23' at one end, the other end-being closed. by adisk 29, against which presses a sarin 30,'the tension of which Ina be ad' justed by" nut 31. By rotating this valve one of the segments inay be'rnade to par: tially close the port 22 and I have provided means, which will be described later, for

- effecting this adjustment in accordancew-ith.

the speed atwhich ,the engine is'runnin'g.

Any other'construction of valvemight be" I, employed in this connection.

' The feed cylinder B is composed, as

shown.,.of. the castings 32, 83 and 34:, suitably bolted together, as shown. The .cylinders A and B are bolted to a central casting 35 with an opening at the top which isprefi I casting providedat' the ends with the heads 37. and Packing of any desired form connecting'rod and cranks are within'the erably provided with the removable 36.

' The piston D may be made of a single .inay be employed, such as the packing rings 39. The casting forming the piston is hollow and has an opening in the top,and the piston.- I have shown the driven shaft 4Q of'the. enginej provided' ith cranks 41, .to the crank pin 43 of which is'conne'cted in the 11SU3l-11121BI18I,-il'18 connecting rod 42,

which isconnected *to' the forward end of thepiston bythe pin 44L; It will be seen that the crank shaft is journaled above the i point fof attachment-of the connecting rod withthe' piston: l By thisarrangeniennndun ing thewvorking'part'of the stroke, the connectin'g' r0 ,d .i's substantially i in" "line with the :5 in ostffavorablelposition The inclinas.

' line of travel of the piston; which; of course,

little importance.

tion of'the connecting rodiis,"of conrsehi n creased onv the forward stroke, but that is of The feed cylinder B is coiinected by a pipe 45 with the carbureter G', of any desired and air is drawninto. theJfeed chamber .7? construction. As the .carbureter forms -initself no part of my invention, it is j not shown nor described in'detail'. -Wh en:the; piston D'moves forward; a charge of gas..

, through pipe oy'which charge-is compressed 5 bytheback stroke of the pistonand is forced i through the pipe connection 'G into the explosion cylinder A. Preferably Ixnake' the feed cylinder B of grea ter diameter than 'the.

explosion cylinder,- so thatthere'is always more than enough gas in the feed cylir'ider.

'q'to fill the explosion cylinder, as well as thei connecting pipe C. This insures afull Theengine will operate successfully withcharge.

out a separate ralve for the outlet from cylinder B, Such a valveniayihowever, be

employed. I have shown in the drawings a suitable valve *which 'isso constructed as to openust at the proper time, The casting is formed with the internal web 443, cone; stitnting anoutletport ti'gto which pifpe C connected, and affording a seat .418 or the diskvalve 49, the ste1n50 of which ex-' tends through ape'rforation in the web, .A, spring 51 holds the disk against its sea-ta. With a back stroke of piston D, the in cylinder B-is'compressed,'this pressure, as

sis/ting the springin holding thewalve'to its sea-t. Before the piston reachc slhe' end of the strokegit engages with the stern-of the valve, forcing the valve open long. enough toallow the charge, which .is nnderlveryronsiderable pressure; to escape through pipe G i and into the explosion cylinder. As there willbe need of an initial'adjustment of-this tern or the the end of. stem 50, .As i ted, the entire valve might be. omitted; as the check valve- 15" operates against the pressurein cylinder i A and 1S arrangedas to open onlywhenlhe pressure. is lowered afte'r'theexplosion has i taken place I v In Fig. 5;I"have shown" a modifiedand' preferred construction of the feed cylinder.

omitted and which has advantages not pos gassed y e construction .shown inflt-he oth r features feedcyhnder is in this case, provided with asuitahly fp'acked disk 53," which can beadjustcdj-to; various posit-ions in the cylinder by thcset screw 54, which is threa'dedthrough the.

end of the cylinder.' The position of the disk"'53 will "obviously varythe -.voh i metri'c 1 in which the adjustable timing valve may be battery circuit between this eccentric and 5 "from the battery contents of thecylinder for any given position of the piston, indicated in this figure by D, which will, of course, vary the pressure and-amount of the char e taken into pacit-y-tha'n cylinder A...

p, I prefr to connect the valve controlling-" the exhaust 0 I ort of the explosion cylinde withthe lgmtion apparatus of the engi so that the effective size of the exhaust poi will be increased as'the spark is advanced and the speed of the engine increased. To

' this end, I provide the driven shaft 40 with on the end of thesc'rew ,of theliiiks 69 and..70,ithe latter being pref- 3 72 leading'from pin 62,. which, with the bar .nected one. end of a bar dle 57' toward the right (Fig. 1)

an eccentric and makethe contact in the n adjustable. dev-ice, the position of which 01s the position-of the valve. jLoose e shaft 'is a" counts having a hanwhich can'be set at various angular ns upon a toothed sector 58, the hanng provided with a tooth 59 which is ed by the thumb piece 60 in the ual'to constructions of this sort. The

collar is provided with the arm 61, in. the

end of which 1s pivoted a pin 62, these parts being completely insulated by means'of the washer-6 3, of rubber compound or other in sulating material. To the pin- 62 is conofwhich rests on thefin'sulating button 65 66, which can be adjustably set in a pin 67 pivoted to the [farm 68flextending from collar'56 in the opposite direction., from arm 61. The arm 68. is connected iwith the shaft 27 of the valve controlling-exhaust port 22 by means erably secured to" shaft 27 by the set screw 71,'which permitsan initial adjustment of the links. r 1

The battery circuit consists of the wire 64, is completely insulated from the rest of the machine, to'the battery F; wire '73 leads' to one primary terminal of the spark coil box (the latter being of any desired construction and not here shown in detail) wire 74 from the other'primary terminal of the spark coil box to the engine; the wires 7 5 and 7 6 lead from the sec-v ondary terminals of the spark Qcoil, respec- .tively, to a' point spark plug H. 55.

on the engine andthe desired type and extends into the explosion cylinder at its forward end 1n/..tlie usual manner.

As themoveinent of the operating han- :will slow down thespark and a; movement in the opposit-e direction will advance it, then, w th the slowing of the spark, the exhaust valve will be rocked so as to bring'theright hand segment 25 (Fig. 3') partly over the port 22, thus decreasingthe effective size of the:

creased by a rotationof the valve in the man- 64;, the other end Thelatter may be of any,

ignition apparatus.-

opening through which the interionof the explosion cylinder is in' communication with the atmosphere; As the spark is advanced, the size f the opening will be gradually inopposite direction, It has been customary, so far as I am re, to govern gas engines at the point iich the charge is first taken into the e. I have found that there are ad- 'ges, particularly in the construction of ihe above described, in governing the amount of the charge which goes to the explosion cylinder at a point between the two cylinders. Vithoutconfining myself to any particular form of valve or governor, l have shown apparatus for controlling the supply of gas which goes to the-explosion c vl- -inder without directly affecting the taking in of 'the gasin'the feed cylinder. In the pipe 6 is located a valve cas ng 77, 1n which.

is a sliding valve-consisting of the solid disks 7S and the guides 79, whichare spaced apart. This valve is connected to the rod. 80 of a governor J o ordinary type. which need-not be described in detail, the driven pulley 81 of this governor being connected by abelt 82 with a pulley 83-631 the. driven shaft 40 of the engine. As the engine speeds up, the rod 80 'of the governor and shuts 01f.- to a more or less extent, the inflow of gas into the explosion cylinder.-

The operation of the engine isas follows: hen the piston .moves forward, the. charge is drawn'into cylinder. B from the carbureter G. A backward movement of the piston compresses the in cylinder B. and, (in case the timing valve is employed), when the piston head 38 reaches the screw -52, valve 49 is opened against the spring 51 and the pressure in the cylinder and the charge is driven around through pipe "C, past the valve 78 and valve 15, into the end of the exploslon cylinder. The partof the piston in cylinder A has by this time'unv covered port- 22 and the incoming charge,

which is concentrated by passing through ,the contracted throat at the end of the cylinder, expands behind the body of burnt gases and, asI apprehend it. has a scouring action around the curved surface within the throat, and thus forces the body of burnt gases through the cylinder and out of the exhaust port 22. The cross sectional area of this opening has been determined by the position of handle 57; whichcontrols the hen the spark-is, slow, the port 22 ispartly closed, because, in such case, the engine'is. running slow and. there.

is ample time foi. the expulsion of hll of the burnt gases. The opening should be no larger than is necessary to. insure -a clean cylinder,fbec'ause, if too large. there is danger that some of the fresh charge will escape. As the engine is'speeded up, the

crom sectienal area of the opening is in The I creased by the rotation oflthe valve. increased speed of the engine makes a larger outlet for the burnt gases necessary and, if the initial adjustment of the valve,

.Which can. be'efi'e'cted by means of the set 1 screw 71, is correct, the size of the exhaust opening Will-be so proportioned to the spark that for all speeds the burnt gases will be 19 completely expelled without material loss ottthe fresh charge. 'll itha forward movement ofthe piston, a new charge is taken into cylinder B and the charge received in cylinder A is compressed, the piston as soon as it moves forward closing the exhaust port 22, When the piston reaches the proper point, this being determined by the positionof handle 57, the charge is exploded and the pistondriven back, as above described. The fioposition of the handle 57 times the spark relative tothe position. otthe piston. by shifting the angular :-sit.imn oi the bar 64 relative to theshnft 40., so that the enlarged part of the eccentric comes into contact with the barsooner or later in its revolution, as the'case may be". The valve controlling the rotation as the bar 64 when the position of handle 57 is changed'.- lVhen the eccentric comes into, contact with bar 64, the circuit is closed through the primary coil of the spar'ker, current being induced in the sec-. ondary, which produces the spark in the explosion cylinder;

lt'will be. seen that, by

in such anianner as to drive the whole body of burnt gases through the cylinder toward' the exhaust port, the forward end of; the

cylinders, where the spark is produced, is sure to be filled wlth clean gas, even though,

.for some reason, the burnt'gases are not com pletely exhausted. Such burnt as may remain will be crowded away from the fori ard end. ot the cy inder, sothat there is no danger of the engine missing fire. it any new charge at all is introduced intothe cylinder. v By'making-the piston a single, rigid-strum ture which isguidedjat each end by contact with the eylinders,-tl1at practically a. combined piston and cross head, I avoid any rocking motion ofthe piston, likely to cause wear and noise. This double piston is'always workingugainst a pressure of gas at each end and, for this reason the engine'is very t niet in its action, the crank connections particularly being kept, from rattlin The space within casting 36' beneath the. piston can be filled with oil, so that'the piston will be self-oilingz By journaling the crank shaft above the center of. the piston, the connecting rod is .in the most: favorable posltion for doing work during the working part of its stroke,

tween the two' cylinders, I insure. keeping exhaust is given just the same amount or" introducing the fresh chargento theend of the cylinder C, (assuming that valve l9 is omitted); but

accuse because it is in a. substantially horizontal position through the movement backward of the piston. This involves, of course, having the connecting rod at. an increased inclination during a part of the forward stroke, but that is a mat-ter'of littlei-mportance, because at this time the parts arc moving by'their momentum and because of the pressure in cylinder B. i

By governing the charge at'a point be'- the feed cylinder full of gas, whichmak e's the engine easier to start after a momentary stop. ()rdi'narilyithas been the custom'to govern the. engine at the carbureter or in take, which means that, afterthe governor. has acted to stop the inflow for any reason'a both the explosion cylinder and the 'feed cylinder, or its equivalent, have to be filled 'up with gas before the engine "can start or- 5 continue its regular. operation. The feed cylinder acts notonly to force the charge .i nto the explosion'cylinder under pressure,

but also as a mixer. This latter function is increased when the cylinder is ,made of greater volumethan the explosion cylinder, because there is then in'the feed cylinder always a certain amount of gas which has been. churned upby a. previous movement of the piston. When the construction of feed cylinder shown in Fig. 5 is employed in connection with the'features of. my engine, several advantages are obtained. .The timing valve controlling the 'outlet from the. feed cylinder may be omitted. It will be obs rved that valve 15 which controls the 'inflo the charge to explosioncylinder nece arily operates againstthe pressure in the ylin. der so that this arrangement. itself imes the charging of the explosion cylind A= back stroke of the piston. compresses the gas in the 'feed cylinder and in connectirigfprpe;

until there has been, a reduction of pressure.

in cylinder A, caused by 'the'exhausting of burnt gases through port 22, no fresh charge Y will. pass valve'15. Inthe construction of Fig. 5,.the adjust-ability of disk'53 by verving the pressurei'n the feed cylinder, which .pressure can be thus made more or less, 'a-ccording to whether the engine is running at high speed or low speed, takes the place of the adjustment of the timing valve shown inFig. 3. If-t he engine is to runfa't 100 revolutions, the-disk will be relativelyfar back in the feed cylinder. Ifthe engine is to run at 500 revolutions, the'disk may be advanced, in which case a greater pressure will be exerted on the back ofvalve; 15,

tending to open this valve moreonic'kly when the engine 18 thus running at' the higher rate of speed. Under such circumstances there IS no danger that the, in-

creased'pressure'of the charge entering the explosion cylinder will cause a loss through the exhaust portbecause the .opening through this port will be made smaller when the engine running at a high rate of speed.

In four cycle engines, in order to obtain greater pressure in the cylinder of a given engine, it is necessary to decrease the volu metric contents of the cylinder by making, for example, the cylindershorter. In

my construction of engine, the pressure in the explosion cylinder may be increased without decreasing the volumetric contents of such cylinder. By a forward adjustment ofdisk 53 the pressu're in tliefeed cylin der will be increased which will give an in,- crease both of 'the amount of gas and of pressure in .the explosion cylinder, pros vided, of course,- the feedcylinder is always.

larger than the explosion cylinder. This adjustable feature is also valuable in adapting the engine to different fuels. Less pressure is 'needed 'when the fuel is, gasolene, ,for example, than when ordinary illuminating gas is used. here the'charge is timed by relative pressures on opposite sides of the valve 15, a full cylinder is insured,,,

' even'under varying conditions. Even after the' piston has begun to move forward and closed the exhaust port, the charge will coir. tinue coming into the cylinder, provided the pressure warrants it.

An engine constructed as above described is capable of being operated to give 'the crank shaft'an oscillating instead of a rd tary movement, that is, of turning the crank shaft back andforth for a fraction of a revolution It is very desirable to have an engine'which can be made to so operate, as, for example, when a reciprocating movement is to be given the driven part, as 111 pumping, churning or the like. By starting.

theengine with. an advanced spark, I can obtain this oscillating IIIOVQIDBIlt of the crank shaft. The crank .niakes somewhat more than a half revolution untilit gets approximately to the position of the greatest inclination of the piston rod, and then moves back again in the opposite direction.

The force of this oscillatin movement is very considerable. The capacity of the engine to so operate is due, as I apprehend it, partly to the posit-ion of thejournals of the crank shaft above the center of the piston, and partly'to the balancing of the piston by the bodies of gas in the two cylinders.

. I do not limit myself to the particular de vices, constructions and arrangements shown 'and described, as modifications might be.

devised which would comewithin my invention as defined by the claims.

I claim:

1. A gas engine, comprising an explosion cylinder having an exhaust opening, and means for varying by one operation the able ignition device, and a connection between the ignition device and the valve, whereby the position of one conditions that of the'other.

vary the effective size of the port, an ignition device comprising a member adapted to be member.

' I 5, A gas englne, comprisinganexplosion cylinder having an exhaust port, 'a valve to ,rivary the efiective size of the'port, an ignition device comprising an eccentric. driven by the "set at different positionswith respect to eccentric f l l l v contact evice and the valve.

6; A gas engine, comprising; an explosion vary th jettective size of. said port, an eccentric,ti'xecl on the shaft of the engine, a contact device .ro tatably mountedon said shaft, means for setting said contactde'vice and said valve; v i

7. A gas engine, comprising an explosion cylinder and piston, said cylinder having port in the sideof the cylinder; mean introducing the charge ,into. the cyli under pressure,a timing device .for the the positionofthe timing device.

, 8..A'gas engine, comprising an explosion cylinder with anintake portat one end, a feed cylinder, a .connect1ng pipe leading the side of the explosion cylinder. a timing the efiectivesize. of'said exhaustopening '1'11:

devic I Q 9'. A'gas engine. comprising an exp "cylinder having an inletport"throu 'end thereof aiic 1 side, a feed cylinder, aconnecting pipe leadvary the eifectiveisize of said port, a var i-.

cylinderliaving an exhaust port, a valve -to spark, and means for/varying the eifective size of the exhaust port in accordance with device for the spark, and means for-varying,

liaust opening 'in' accordance with the posi 4. A gas engine, comprising anexplosion cylinder having an'exhaust port, a valve to set to control the time ofthe spark, and a l nk connection between .the valve and said engine, and a contact device adapted to be.

' the and "a connection between said in difi'erent-posit-ions on tlieshaft, and a link connection between the contactdevice an intake port at one end, aridan exl'iaiifst from the'fecd cylinder to the'intake port of the explosion cylindema double pist on for. said cylinders, an exhaust openingthrough "accordance with the positionof the timing 12 I ing from the feed cylinder to the inlet port of. the explosion. cylinder, a check valve for said inlet port, a .double piston for said cylinders, a centrally arranged crank in said piston to operate the same, a valve to vary the eifective size of the exhaust-port, an

' ignition device having an perat-ing' handle cylinder, 9, piston,

I is

an said explosion for timing the spark, and a connection beween said handle and the valve controlling the'exhaust-port. 1 10, A gas engine, Comprising an explosion a feed cylinder in which the gas is compressed with a back stroke of the piston, means for introducing the gas 1 from the feed cylinder. into the explosion cylinder at times determined by the pressure cylinder and ,means for varying the exhaust from the explosion cylinder in accordance wit-hthe speed at which the engine is running. 4 I

11,. A gas enginecomprising an explosioncylinder and apiston, said cylinder having I an intake port and anexhaust port; a feed I cylinder, .means for introducing the gas from the feed cylinder into the explosion cylinder, means ton-varying the efiective size of the exhaust/port of-the; explosion cylinder, a disk. fitted within said feed-cylinder,

and means for adjusting the position of the disk so asto vary the effective size of the feed cylinder; 'the volumetric contents of said feed-cylinder being atall times greater than that of the explosion cylinder, whereby the pressure of the gas introduced into the latter may-be increased without diminution of the amount of the charge.

12. In a gas engine the combination with an explosion cylinder and a piston, of means for varying the speed at which the, engine is run, and means operated by said last named means for correspondingly varying the; discharge ofburnt gases from the explosion cylinder.- e 13. In a gas engine, the combination with an explosion cylinder and piston, of a timing device for the spark and means for *varying the discharge of burnt gases from the; explosion cylinder in accordance with the position of the timing device. I

- 14. In a gas engine, the combinationwith an explosion cylinder andpiston,-of means f comprising a spring pressed -valveg set in tiperatlon by a decrease 1n] pressure in the explosion cylinder after an explosionv for introducing fresh. charge of gas, means for "varying the discharge of, burnt gases from said explosion cylinder in accordance: withthe speed of the engine, and means for vary-;

ing the amount of the fresh charge introduced into the explosion-cylinder.

15. In a gas-engine, the combination with an explosion cylinder and piston, of means comprising a spring pressed valve set in oporation by adecrease in-pressure in the ex-' 3 v: 6

plosion c linder after an explosion, for invalve for the explosion an inlet troducing a fresh charge of gas, means for varying the discharge of burnt gases from said explosion cylinder inacoordance with thespeed of the engine, and means for varying the amount of the fresh charge int-roduced into the explosion cylinderin accordance with thespeed of the engine.

16. In a gas engine, the combination with an explosion cylinder, of a feed cylinder, a

conduit between the same,- pistons in'said cylinders which operate together, means for varying the size of the feed cylinder rela-' tive to any given position of its piston,,and means for varying the discharge of burnt gases from the explosion cylinderin accordance w1t-hthe speed of the engine.

17- In a gas engine, the combination with 1 an explosioncylinder, of a teed cylinder,a

cylinders which operate together, an inlet valve for the-explosion cylinder arranged to be opened by pressure, der provided with .an exhaust port,v and means operated bv the timing device for the spark for varying the eifective crosssec clonal-area of said exhaust port;

18. In a gas-engine, the combinationwith an explosion cylinder, of a feed cylinder, a

conduit between the same, pistons in said cylinders which operate togethenan inlet cylinder. arranged to be opened by pressure, said explosion cylin der provided with an exhaustjport, means for varying the effective cross-sectional area of said exhaust port, a valve between the feed cylinder andsaid inlet valve, and a governor to control the same in accordance I with the speed of the engine. 3

n a; gas engine, the combination with 19. I an explosion cylinder, of a' feed cylinder, pistons 111 said cylinders which operate'td. gether, aconduit leading from the feed cyl- -c0nduit between the same, pistons in said 7 said explosion cylin inder, into theend of the explosion cylinder,

valve for the explosion cylinder which is opened by pressure, saidexplosion cylinder being provided with an "exhaustl port, mean's for varying the eflec-t-ive cross-- sectional area of said exhaust port, avalve interposed .in said conduit between the feed cylinder and. said inlet valve, and a, gov-.

.ernor to control the position of the inlet valve in engine. i

20.- In a gas engine,- the combination with accordance with the speed of; the

an explosion cylinder, of a feed cylinder,- pistons in said cyllnders which'operate together, a conduit leading from. the feed cylinder into the end ofthe explosion cylinder, an inlet valve *for the explosion cylinder whichis opened by pressure, said explosion cylinder being provided with an exhaust port, means for varying the effective crosssectional area of said exhaust port, a valve interposed in saidoconduitbetween the feed cylinder and, said inlet valve,a governor to controi' the position of the inlet Valve in no 1 cordance with the speed'ofthe engine, a timing device for the spark, and connections between the tuning device and said meanseiiect ire size of the latter in weer-done*ewith with 2e 5 for varyin'g the cross-sectional area of the the speednt Which the engine is'renning; a'

exhaust port, whereby the position of the feed cylinder, pistons which worksinni-lta- 25 former determines the position oi the letter. neously in saidcylinders, and means for ;.Z1 A- gas engine comprising an explosioh arying the effective size of the feed cy1incy ee.- heving an inlet port and an outlet tier the volumetric contents of the feed cyln port, means for varying the effective size of' iinie being at aii-tiniesgreeter than thet of th'eiatter port in ziccorclanc'e with the speed the gxpiosion cylinder, so that h filers-easing;- 3e

dat w'hich the engine isrunning, means for ,corhpresemgjqthe gashefore it enters the explosion cylinder, a conduit leading from said compressing, means to the inlet port of said explosion cylinder, and a governor comprising a valve interposed in' said conduit, the position of which isva'ried in accordance with the speed of the engine.

7 meet in correction as follows:

the eftective size of the feed creased pressure is obtained. in sion hylinder' Withoiit any dillli} amount of the charge;

rADAM -Mw Cs? -Witnesses-z P. HJTRUMA H. L. PEcK.

It is hereby certified that in Letters Patent No. 1,043,221, granted November 1912, open the application of Adam M. G ihs on, of Chicago, Illinois, for an i nprore v Gas-Engines, errors appear in the printed. specification requiring Page 6, line 88, after the word port insert then m'cis (a timing ale'mcefor the spark; same page, line,91, after the w0rd"'p0rt insert the words in accordance with th position of the timing-device, -and same page, line 102', t after the word same a ndline 117, after the vWon. valve insert the word auto --matically; and that the said Letters Patent should be reedvi'ith these corrections in Letters iatent No, 1,043,221.-

therein', that the Seine n my conform to the record of the case inthe PatentOfiicef I Signed and seeledthis 31st day of December, A. D., 1912,. 3 8%. 0.0. BILLINGS,

Acting; Omnmissiqnr QfPat nta.

controi' the position of the inlet Valve in no 1 cordance with the speed'ofthe engine, a timing device for the spark, and connections between the tuning device and said meanseiiect ire size of the latter in weer-done*ewith with 2e 5 for varyin'g the cross-sectional area of the the speednt Which the engine is'renning; a'

exhaust port, whereby the position of the feed cylinder, pistons which worksinni-lta- 25 former determines the position oi the letter. neously in saidcylinders, and means for ;.Z1 A- gas engine comprising an explosioh arying the effective size of the feed cy1incy ee.- heving an inlet port and an outlet tier the volumetric contents of the feed cyln port, means for varying the effective size of' iinie being at aii-tiniesgreeter than thet of th'eiatter port in ziccorclanc'e with the speed the gxpiosion cylinder, so that h filers-easing;- 3e

dat w'hich the engine isrunning, means for ,corhpresemgjqthe gashefore it enters the explosion cylinder, a conduit leading from said compressing, means to the inlet port of said explosion cylinder, and a governor comprising a valve interposed in' said conduit, the position of which isva'ried in accordance with the speed of the engine.

7 meet in correction as follows:

the eftective size of the feed creased pressure is obtained. in sion hylinder' Withoiit any dillli} amount of the charge;

rADAM -Mw Cs? -Witnesses-z P. HJTRUMA H. L. PEcK.

It is hereby certified that in Letters Patent No. 1,043,221, granted November 1912, open the application of Adam M. G ihs on, of Chicago, Illinois, for an i nprore v Gas-Engines, errors appear in the printed. specification requiring Page 6, line 88, after the word port insert then m'cis (a timing ale'mcefor the spark; same page, line,91, after the w0rd"'p0rt insert the words in accordance with th position of the timing-device, -and same page, line 102', t after the word same a ndline 117, after the vWon. valve insert the word auto --matically; and that the said Letters Patent should be reedvi'ith these corrections in Letters iatent No, 1,043,221.-

therein', that the Seine n my conform to the record of the case inthe PatentOfiicef I Signed and seeledthis 31st day of December, A. D., 1912,. 3 8%. 0.0. BILLINGS,

Acting; Omnmissiqnr QfPat nta.

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