US915717A

US915717A - Gas-engine.

Info

Publication number: US915717A
Application number: US66227797A
Authority: US
Inventors: William James Wright
Original assignee: A F HOLLIDAY; D L GILLESPIE; DALLY JR AB
Current assignee: A B DALLY JR; A F HOLLIDAY; D L GILLESPIE; DALLY JR AB
Priority date: 1897-12-17
Filing date: 1897-12-17
Publication date: 1909-03-16
Anticipated expiration: 1926-03-16

Description

N J. WRIGHT.

GAS ENGINE.

PPLxoA'rIoN num Dra 17.1897.

Paigented Mar. 16, 1909.

2 SHEETS-S EET l,

W. J. WRIGHT.

As BNGlNE.

APPLICATION FILED DEO.17,1897.

Patented Mar. 16,1909.

2 SHEETS-SHEET 2.

WIT/158858:

ATTORNEYS UNITED STATES, PaTEisiir, QFFICE f WILLIAM JAMES wnieirr, oil rrr'rs'uize, PENNSYLVANIA, Assioma or onena'nr n. i.. c nLLiisrni, A; B. DiLLi'.'Jn. .ANp ar. Hormon', oF Pir'rsone, igisNNsrLvAuia.

To all .whmn it may concern.:

" WRIGHT, residing at Pittsburg, inthe county are also provided for drawing a fresh air supply into thc working cylinder in advance of a or cx lode'd charg portion tiat might r'episton cylinder as the exploded mixture is l exhausting to blow out said lmrned mixture.

- have invented a. new and Improved GasEn predetermined times to draw ofi' the exhaust 't ic opposite directions.

"icas-Enom. t

no. eimiz.

Be it known that I, WILLIAM Janes.

of Allegheny and State of Pennsylvania,'

gine, of which the following is a specification.

My present invention relates to explosive engines and `more particularly'refers toimprovenients in that tvpe of engine disclosed in my co-pending application filed December In my other application referred to' the .pumping cylinder has its pist-'Jn operated by an independent crank upon-thecrankshaft, coperatively so arranged with the working piston crank, -as to effect a suction action'at om the back or explosion end of the working cylinder and at. the saine time draw in a fresh charge of the working agent at the forward end of the. working piston. In other words,-one end of the working cylinderis charged after the other end has exploded and is exhausting, an explosion occurring at each' cvcle of movement of the working piston in In my other application referred to, means new charge Voi: the mixed air and gas of the working .agent to blow out' a. ossible flame main ack of the working piston, and leave the. exploded end clear Aof burned mixture'for a fresh working charge.

My present invention primaril)v seeks to provide a modified construction of the working and pump cylinders, whereby n inore economical, simplified and compact engine is produced, and in which the .several parts are cooperativelyY so arranged that thepunip will act to draw in a charge of workii '1 agentat one end of the pump cylinder by `iction as thenew charge ofY new working agent. in front of the puin p piston is licingcompressed so that as the working piston uncovers the exhausts f or the end in which the exploded mixture is located, the new charge of workin-,regent pump piston will be. 'creed into the working l Again, in vpresent invention has for its ob- E ject to provide means for storing up a supplyofjpure an' which is adapted to be forced i Specication of Lettersfatent.

Patented March 16, 190?.

Application lad 'December 17 1897., lio. 662,277.

into the working cylinder under considerable pressure in advance of the new charge of working agent. to blow. out the burned mixture. before the new charge of Working agent enters the 'working piston cylinder as the working piston -uncovers the exhaust ports.

the working and pumping .pistons at the cxtreme left. hand limit of their stroke. Fig. 2,

is a; similar view showing the working. and

pumpingl pistons in the position they assume intermediate the. ends .of the working and pumping cylinders and after the crank of the drive shaft hasinade one-fourth revolution.

Fig. 3, isa transverse section on thc line 3 3 of Fig. 1. Fig. 4, isa similar view on the line 4-4 of Fig.. 1. Figs. 5 and 6, are detail sectional viens of the'igniting tube device. Fig. 7, is a cross section on the line. 7-47 of Fig. i. 8-8 of Fig. 1. Fig. 9, is a similarl viewv on the line 9 9 of Fig. 1.

Fig. 8, is a similar viewon the line' .'Referring new to the accompanying' drav. ings in which like numerals and letters Aof reference indicate like parts in all of the figures, the working cylinder 1, and the pump cvlinder 2 are arranged in the same longitudinal alinement, the working and pumping pistons X and Y respectively of the working and pumping cylinders l and 2 respectively, being connected together by the rod 3 so that. tlie t-wo pistons u ill move in unison.

At eac-h end thc working cylinder l has a duplex set of ignitiiig tubes 4 and 5, of different heat area. the larger ones 5, of uhich,

: are brought into use on y u lien it is desired E to explode a charge at the cud of the working cylinder l. to start thc engine from a stopped which has been com resscd in front of the i or dead position, the smaller tubes 4, being 'used after the engine has started and during the regular running thereof. lunch set of igiiitng tubes has a rotary valve mechanism 6 having ports 6 6 so arranged with respect. to the igniting tubes that when the valve 6 is set in one position, the shortignit A6 will cut out the short tubes 4 and place the 4 ,long tubes 5 in operative communication witthe inteiior of the working cylinder.

.Euch vulve 6 has o suitable handle 6*a for manipula-ting the sume, it being understood that the ports t--6 are so arranged that when the vii-lifes nre. set with the ports 6" between the tubes 4 und 5, both tubes 4 und 5 will he cut out and the engine stopped. The left hiind end of the Working cylinder 1 is `:onnected to the right hand end of the um cylinder 2 by a pipe 7 while the right lien end of the working cylinder l, and the lefthand end of the cylinder 2 communicate with eiich other through the pipe 8. which pipe S is inode of sufficient eonvolutions to l ove the sinne ciipiieity es the pipe 7.

At the points where. the pipes 7 and S join with the working cylinder 1, they are, provided ii ith bock pressure valves 7*-8 (see Figs. 1, 2, 8 ind Q), :ind they also hove'each e. supplemental cham-ber 'lb-8" respectively in which thcvelves 9--9 for closing oli the chamber 7b-8b respectively from the chambers EVM-9" res ctively into u hieh the pipes 7 und 8 lend, t e valves 9 9x opening one wity into the chambers 9-9", to'chzimlier 'fh-8* respectively while the valves 7-P5 open outwardlyr from the chambers 9*-9l into the working cylinder.

10-10 denote fresh oir supply pipes each provided with e check valve 10, os shown.

"lhese pipes 10-10 connect with the miiin feed pipe l()b which connects with n volve mechanism in a. manner presently explained, und the said pipes 10-10 communicate u ith the chambers b and 8b, us

. shown by dotted lines in Figs. 8 und 9.

V designates n double iictiiig: valve mech- A snisin comprising n valve. casini; 11 hirving it valve chamber 11' in which :t valve member 15 is slidiible :in l this valve member 15'is of tubulin' form mid provided with -casing 11" is provided with a pnir of dinmetriciiily opposite :dinin;,r ports 11b-11" A with which the nir suppl)i pipe 1 l and tb(- nii' .M1-:oke pipe if; respectively connect. the valve member if being so iirrsingcd that when the vulve is moved in the position slur-.vii in Fig. 2. the ports 15 and 15" open up tiiiiiiiiiiiiicution between the airpipe l1 The port 15of the vulve casing 11, is

adapted, when the. valve is in the position shown in Fig. 1, to register with in ii crture.

11d in the. vulve cesing 11 iilto which the feed pipe 10 is led. When the valve is in the position shown in Fig. 2, the i e 10b is cut out. The valve mechanism X' n so coinprises on nir chamber or pocket 14 closed by a llexible diaphragm 14 to which the stem 15X of the vulve member 15 is secured.

T he vulve stem 15 projects through the diaphragm 14 ond into a supplemental valve casing 12c having a chamber 12" in which n slide valve 163s. movable ond the vulve 16 has :i port 16" foi opening; up coni- Iniinicstion with the apertures 12b 12" of the valve casing'` 12x into which apertures 12b-12"', the gas supply pi e 12 and the gas otiteke pipe 12y respective y lead. The slide valve 16 and the vulve member 15 are so arranged thatwhen the valve member 15 is" in the position shown in Fig. 1. the pipes 12-12y are out of communication with each other, and when the vulve mechanism isin the position shown in Fig. 2, the pipes 12 :md 12 are in communication with each other. The air off-tiike pipe 1.3 and the gas oli-take pipe 12y connect together through the lead 13X with the pipe )3F whose ends communicate with the right und left hond ends re spot-.tively of the pumping cylinder 2 sind. t

e sind f pipe 13y is provided i\ ith check valves 13-13 and cut-oil' vulves 13"--13b es clearly shown in Ngs. 1 nud Z of the drawings.

The cylinder 1, at points intermediate the center and ends, has two set-s of escape ports 17 that open into nn annular jacketl 17" which .discharges into an'iii'i'ttike 17h to the atmosphere.

Operation: Assuming the/parts to be. in the osition shown in Fig. 1 a. coin ressed working` charge in the left hand en of the working cylinder justabout to be exploded, the pipe 7 filled with air. the right hond end of the working cylinde:- having the burned mixtiireexhausted and just about filled with new working agent, the pi ie S rind the remaining: spiice in the left and er.-d'ol' the pumping cylinder being: tillcd with working: :igt-ntnnd valve Y being in the iosition shown; iis the charge fit the left Imm end of the working; cylinder is exploded und Ithe pistons moved in the direction indicidedliv the :irri-iw, the valve 7'l will be. held closed,- diie to the pressure of the exploded clmi'g'e in the left hand end of the cylinder. the vola-'eab at the left hand end of the working cvlinder will be closed vdue to the pressure in t ie pipe 7 which increases as the pompini! pis-ion moves in the direction of the iii-row to com press the working agent in the right hand end of the pumping cylinder. Now -sis the pistons begin their movement in the direction of the arrows in Fig. 1, the. working piston X will close the right hand set of exhaust ports 17, and compress the chiirge of 'working agent within the right hand end of theworlr-l ing cylinder, it being undeistood, that n.5.A

'l0-10h as the pipe 1Uh is in communication einem dn compression in the right hand end o@ the working cylinder begins, the valve 8"s will be heldv closed by the pressure y'if the working agent in the. right hrendv end of the working i with the pipe 1l through the' portal 15b-15C.

. The beginning of the movement of the pistons from left to right is a quick one and hy the time piston Y has drawn the. Working agentwhiclr was formerly in pipe 8 out of the saine and drawn suliicient air into the pipe 8 to. ll the same, the suction created by the air passing through pipe 1l into pipe l0 causes a partial vacuum in the. chamber 14 Ywhich shifts the valve member 15 to the poias sition shown in Fig. 2. After thevalve been shifted to the position shown in Fig. 2, which occurs just as soon as the pipe 8 has become filled with air, then the piston Y can no longer draw air into the pipe 8 through t-lie pipe lil-10b as the ipe 10" is cut ott from the air pi e 11. 'l.` e pipe S remains full of'airduring the `rest of the suction stroke ofthe pump, since the suction created by auch stroke draws air and gas through

pipes

11, 13, 12 and'12y into' the left hand end of the pumping cylinder, it being understood that at this time pipes l2 and l2 and 1 1 and 13 respectively, are in communication with eachother. As the )ist-ons reach the limit of their stroke in the iiect-ion indicated by the arrows in Figs. .1 and 2, the

workinglagent in the right hand end ol the pump pistons will lia-ve been compressed to its full extent. while an uncompressed charge of working agent will have been drawn intol the'left hand end of the pump cylinder. At t-hc saine time the working avent in the right hand end of the working cfliiidei' will have. been compressed while the exploded mixture iii the left hand end of the cylinder will have moved the piston in the direction indicated by the arrow and spent its force.

Lpistons reach tlie'limit of their stroknin the direction-of the arrow` the left hand series of I exhaust. ports 17 of the workingy cylinder will be uncovered, thus allowing' the exploded charge to pass out into the exhaust i'ecci-ver and from thence to atmosphcre,and as soon as theexhaust ports l? are open at the left is at practically atmospheric pressure and the compressed air in pipe 7 and4 compressed working agent charge in rightl hand end of the pumping cylinder. As valve 7 opens e the compressed charge in the right haio end of the pumping cylinder will force the' air out of the pipe 7 into the left hand end of the working cylinder which air of the pipe 7, .iii turn, forces out the exploded mixture from the left hand' end of the working cylinder to atmosphere; the air from the pipe 7 being then forced out of theleft hand end of the 'working cylinder by the compressed charge of new Working agent from the right hand end of the pumpinpr cylinder, it being understood that the pistons X and Y do not start on their return stroke in adiiection opposite to the arrows iii Figs. 1 and 2and cover up the left hand seriesof'poits 17 of the working cylinder, until the compressed chai'ffe of working agent in the right hand end (il the pumping cylinder has forced the air out of pi e 7 into the left hand end of the working cy inder and out of said end of the working cylinder into the exhaustreceiver. As soon as this is done and thc left. hand end of the working cylinder has become filled with a,

new charge, the pistons-X and Y begin their .movement from right to left in the direction opposite to the arrows in Figs. l and 2 t0 compress the chargeof working agent intopage of both pistons when no movement` At this instant, the vacuum in .the chamber 14 n released and.

`thereof takes place.

the flexible diaphragm together with the spring of the valve V shifts the valve V into the position shown in Fig. l. .Now us thi` piston-begins to more from right to left to compress the charge in' the left. lniiid end of the working cylinder, (the chaige in Athe right hund end of the working' cylinder being just exploded) the valve S is held closed, valve 9x is also heldclosed. valve 7 is held closed while valve 9 opens to allow the piston i at the heginniiigof its movement from right to left 'to draw in uir from pipe l1 through pipes lllf--W into the pipe 7 to fill j the same., it beingr understood that as soon l as the iiipe 7 is lilled the viic-iiiiiii created in hand end of the cylinder, the valve 7 will i V11, 13, 12, 1.2! 'and 13? to allow the pump open due to the difference in pressure' bepiston during' the remainder of its stroke I from rivht to left to draw in ali'e'shworking tween the exploded working agent at; the left hand end of the workingfcylinder which Qhlfg the hand end of the pumpico :od that'as soon as los isb

ing cylinder. Aa the piston Y nieves from ri ht to left the char e in the left hand end o both cylinders wil be compressed as before. As the pistons reach their initial osition the same series of operations take p ace,

as before. A

-From the foregoing description taken in connection with the accompanying, drawings, it is thought the complete construction,

operation and many advantages of my invention will be'apparent to those skilled in the art to which 1t a pertains.

Having thus descriilied my invention, what I claim and desire to secure by liet-ters Pat- 1. A gas engine comprising a Working cylinder having inlet ports at its opposite ends and exhaust ports intermediate the ends, a pumping mechanism for compressing a new charge while the werking piston is making its' stroke eected by the impulse of the last exploded mixture, pipe' connections of relatival)7 small cross sectional area and great len th, between the )umping mechanism an the working cylini er for storing up air.

air admitting means connected with said pipe connections, said pump arranged to force said' air out of the pipe connections into the working cylinder in advance of the '30 new charge of working agent substantially as shown and described.

2. A gas engine comprising a working cylinder and a piston recipiocably mounted therein, inlet ports at cach end oi' said working cylinder` two sets of exhaust ports intermediate the ends and middle of said working cylinder; a pump comprising a pumping cylinder and pumping piston reciprocahly mounted therein. said working and pumping 40 pistons being connected to more 1n unison.

a storage and connemingpipe connecting one end of tlicworking cylinder to the opposite end of the pumping cylinder. a cher-l;

valve adjacent the working cylinder for said storagc and connecting pipe, a second storage and connecting pipe ioiningthe mln-r end oi the working cylinder to the otlicrcnd of thc pumping c5 lindcr, a valve device iidjaccnt the working` cylinder for said second storing' and connecting pipe, valve conti'olleil air pipes connecting with .said storing and cominciingpipesl at the ends adjacent the working cylinder, anuir supply and a gas suppl) pipe. o double acting'valte con 35 nectcd with said air and gas supply pipesi and with said air pipe which connects with the storing pipes. a pipe having laterals connected with each und of the pumping' c vl` iinlcil and connected to seid double acting valve, said double acting vnlvc having projisions in virtue of which -oirimnnicntion "maybe: han between thc air inict pipe' and the air supply pipe for the storing and connecting' pipes or communication may be hed betgwgeien the air supply pipe and the pipe connecting with the pump cylinder and bctween the es supply -pipe and the ipe connecting wit the pump cylinder whi e simultaneously cutting ofi the air supply to the air ipewhich connects With the said storing ran .connecting pipes, all being arranged substantially as shown and described.

3. A gas engine comprising a Working cylinder having inlet ports at its opposite ends and exhaust ports intermediate the ends, a pumping mechanism, pipe connections of relative y small cross sectional area and great lengt-h, between the umping mechanism and the inlet ports of t e working cylinm der, said pumping mechanismhaving provisions for compressing a new charge While the working piston is making its sti-oke effected by tlieimpulse of the last explo'ded mixture and for -storing up air in such pipe connection, said pump arranged to force such air out of said pipe connection into-said Working cylinder to blow out tlic exploded mixture and to force the compressed new charge into the Working cylinder after the air, substantially as shown and described.

4. A gas engine comprising a working cylinder' l'iaving inlet ports at its opposite ends and exhaust ports intermediate the ends, a pumping mechanism, pipe connec tions of relatively small cross sectional area` and great length, between the umping mechanism and the inlet ports. of tlic working cylinder, .said pumping mechanism hai'- ing provisions' for compressing a new charge while the Working piston is making its stroke etl'eeted bythe impulse of thc last ex iloded mixture and for storing up air in suc pipe.

connection, said pump arranged to forcesuch air out of said pipe connection into said Working cylinder to blow .out the czipioded,

mixture and to force the compressed newA charge into the Working cylinder att-er the air, to force out thc air and riztill the workingchamber 'with a. lrcsli ohci-gc substantially as shouf: and described.

e. .A engine comprising u working cylf inder having iiil'et ports 'at its opposite ends and piston controlled ports intermediate the ends. a pumping mechanism. pipe connectienslictween thc pumping mechanism and tlv.` inlet pr-.rt-soi thc working cylimler, said pipe connections being relatively long and of small cross sectional area to serve as' air storing reservoirs, means controlled by the pumping mechanism for drawing in working agent into tlic pumpingincclni-nisrn, means.

for autoinntically shutting oli" the air supplyl ed to thc pipc conmctions when they ure vwith air, said pumping mechanism-arranged to force said air within tin pipe connections into the working cylinder in advance of the new working charge to blowout the exploded 4, f

mixture licl'ore rclilling the working chamber with freslicharge, substantially ns s hownf` and described. .Y

6; A gas eiigine'comp'rising aworl'iing cylinder having inlet ports at opposite ends, and

i provisions for compressing a 4new charge,

while the Workingpiston is making 'its stroke effected by the impulse of the last exploded mixture and for storing up air in shown and described.

sind pipe connections, said pumping mechanism arranged to force saidair from said pipe connections int-o said Working cylinder to blow out the exploded mixture., and to force thecoinpressed new'charge into the Working cylinder aft-cr the air, to refill the working 'chamber with a fresh charge, substantially 7'. A gas enginelcomprisingapower cylini der having induction ports at its opposite ends and centrallydisposed exhausts, of a pump connected with the working cylinder for storing up and compressing a new charge outside ofsaid Working cylinder as a charge within the working cylinder is bein compressed,valved cut-offs governed oy the discharge of the exhaust in the working cylinder -for opening u communication between the pump and t e working cylinders whereby to admit f the exteriorly held compressed charge into the working cylinder after the previous charge has become exhausted, said connections between the pump and working cylinders serving as fresh air reservoirs, substantially as shown and described.

8. An` explosive engine, u comprising 'a working cylinder and a pump cylinder arranged in tandemja single piston rod, having a piston operating in the `roi-king cylinder in cylinder and automatically and a piston operating in the puinpin cylinder, the. adjacentiends of the two ey inders having n. pipe connection, a closure valve in ,said connection, theother ends of the twa cylinders having a like viilved connection, o

-working age-nt feed pipe having valved laterals connecting with the opposite ends of the pumping cylinder and a separate fresh air supply connected with each endof the workoveiiied va ve devices for opening up the sai( air supply directly against the exploded charge prior to feeding in a new charge of working agent as specified. Y

9. In an ei plosive engine as described, the combination with the working and )ump c linders, cooperating pist-ons X and YI, and

A t e valved connections for bringing the opposite ends of the two cylinders into communication With each other; of a working agent 'feed connected with the pum ylinder, a

fresh air supply for each end o the working cylinder, valved ports through which said air supply passes into the working. c 'lindei, a.

valve device for cont rollingthe fee of airand gas to the pump cylinder, said device including means for cutting ofi the aforesaid fresh iir ,supply to the working cylinder when the working agent is fed therein, as set forth.

10. 'lfhe combination with a power cylinder having inlet ports and piston controlled exhaust ports, of a pumpingmeehanism forv forcing charges of working agent into the power cylinder as it is being relieved of the exploded mirtilli-c pipe connections of rela.- tively great length and small cross sectional is i,

area between the pumping mechanism and the power cylinder to permit passage of working agent and scavenging agent from the pumping mechanism toQtlie power cylinder,

and air and working agent feed mechanism for the pumping iiiechenisni, anautomatic controlling mea-ns for said air and working agent feed mechanism, said pipe connections serving as fresh air reservoirs, said pumpin mechanism serving to force a new charge o .working agent into the fresh air reservoir to displace the fresh air and force it into the power cylinder to blow out the burned mixture before the new charge enters the power cylinder and serving to refill the air reservoir at times, said air and working agent feed controlling means having provisions forV cutting 0H the pure air supply and admitting combined air and working agent into the pumping cylinder at times, substantially as shown 'and described.

l l. A gas engine comprising combina'- tion with a power cylinder having inlet ports .at its opposite ends and piston controlled exhaust ports inteiinediate its ends, of a pum reat length and small cross sectional area,

eti-reen the pumping mechanism and the in` ing mechanism, connections of relative y of are opened to blow out the burned mixture and serving to force a new charge of working agent through said reservoir iiito said Wer c linder todisplace the fresh air, su stantially as shown and described.

i l2: In a fus engine, the combination witha power cy inder havin in let and exhaust orts, of a pumping mec ianism, connections etween the pumping mechanism and the power c linder, means for first drawing in a fresh air charge into said connections and f' il v 6 I 91mm? than drawing, in u charge nf w01king-ageut burned mx'xLux-e esther umvchguge of wm'kmg: inw Suid pumping mechanism, and than ol'cugent machu the power cymdel, 1115MB- ing Suid Charw of sxm'king agent frm the tiixllyns shownand descaibed. Y pumping; nwvanism to displacethe fresh nir WILLIAM, JAMES RIGHT. 5 charge uml fmcc it into the pnwer cylinder Witnesses;

when the exhaust ports thereof are open to FRED G. Dlmmucu, cause the flesh air. charge tu blow out the.. .101m 14. FLETCHER.