US288479A

US288479A - Jsttcolaus a

Info

Publication number: US288479A
Authority: US
Publication date: 1883-11-13
Anticipated expiration: 1900-11-13

Description

(No Model.)

N. A. OTTO;

GAS ENGINE. 110,288,479. Patented Nov. 13, 1883.

. Inna-6563mm Jlfie'ohw 02 11 7009? 0,

THE NORRIS PETERS ca, WASHINGTON, o. c.

I a r NITED ,NICOLAUS .A. came, on ,nnn'rz onrnn-nnmn, PnUssIA, GERMANY.

eAs-ENelNE.

SPECIFICATION forming part of Letters otent No. 288,479, dated November 1'5, 1883;

v Application filed Mn will (He model.) *Iatented in England April 3,1 E83,No.1,677.

To all whom, it"nmy concern a citizen of Prussia, residing at the'Gas-Motoren-Falr'ik-Deutz, at Deutz-on-th'e'Rhine, in the German Empire, have invented a new and'nsfulImprovement in Gas-Engines, (for which provisional protection has been obtained in Great Britain, No. 1,677, dated April 3,:

the gas motor engine an auxiliary cylinder open to the atmosphere at one end and provided at its closed end with a check-valve opening outward, which cylinder has a piston con nected to ac ank on the engine-shaft, so arranged that it makes its outstroke simultaneously with the o utstrokc of the working-piston. The piston of the auxiliary cylinder, at the end of its instroke, is situated close against the closed end of its cylinder, so that when it is made to perform its outstrokc during the working-outstrokeof the engine-piston, a vacuum or partial v'aouum will be formed behind it'in thecylinder, a portion of the power pro-.

auxiliary cylinder in forcing its piston inward.

Any air that may have leaked into the auxiliary cylinder during the outstroke of its pistpn will be expelled through the before-mentioned chcch-valte on the reti'irn-stroke.

The'accompan yin g d rawin gshows a sectional plan of a gas-motor engine having two singlcacting working-cyinders a b, and provided with an auxiliary vacuum -'cylinder, (1, with discharge-valye 1', according to my invention. The pistons a I) d are all connected to parallel cranks on the engine-shaft 0, so as to make their out and instrokes together. The piston d moves close up to the bottom of the cylinder d at its instrolce,and expcls any air that Be it knownt-hat I, Nrconws Ancusr OTTO,

may leak into the cylinderthrough the dis-' charge-valved, so that when ibis caused to 1 perform its outstroke during the working-outstroke of the pistons a Z), a vacuum orpart-ial vacuumis iormedbehind it, against which the atm osph eric pressure actson the return-stroke.

From thetoregoing descriptionit will readily be seen that the unequal action of single-act ing gas-motor engines will by this invention be effectuallycompensated and a comparatively uniform motion be obtained without the use of Jarge and heavy fly-wheels. As is well understood, the explosion of theicombust ible charge of such engines developes very considcrable force during the working-outstroke of the piston, resulting ina yery rapid outward motion of the. piston and correspondingly rapid semi-revolution of the crankshaft, while the remainder of the revolution of the latter and the return-stroke of the piston can. only be effected by the expenditure of the 172 s mm stored up in the shall; and fly-wheel duringthe outstrokc; henceit follows that, unless the tly-wheel be made ineoiweniently large and massive, so as to enable it to store up a large amount of ris eira',tho return-stroke of the pistonand second half of-the revolutionof the shaft will take place at a com m-ratively slow speed, theunstcady motion of the engine thus obtained rendering it unsuitable for work, such as driving dynamo-electric machines, requiring a'vcry uniform motion. Now, by expending a portion of the power developed during the working-outstroke in producing a vacuum in the auxiliary vacmnn-cylinder d, as above described, and then allowing the mot-ivcpower thus stored up to be given off during the return-stroke of the piston, it will be veryfevidcnt that the power developed by the engine will practically be evenly distrib- I uted over the entire revolution of the engine shaft, resultlng in a gr. atlyincreased uni- 1. In combiiiatioirwithagas-1notorengino,

, in which the-,admission and combustion of the gaseous charge is effected only on one side of too 2 i seams the. piston, a separate eylii-ider whose piston during the instroke of the working-piston moves close up to the bottom of the cylinder, so as to ex'pel allthe 'air therefrom through a 5 discharge-valve, so that when the piston is made to perform its outstroke during the working-outstroke of the working piston -or pistons, avaouum or partial vacuum is formed behind it against which the pressure of the atmosphere acts on the return-stroke of the piston, thus giving out the power again that had previ- '-ously been expended informing the vacuum, substantially as described.

2. In gas-motor engines, the combination, I 5 with a single-acting working-cylinder, of an auxiliary cylinder. 11, with disoharge-valve i and piston d, by whose outstroke avaouum or expelled through. the valve i, substantially as 20 and for the purposes. set forth. In testimony whereof Ihave signed my name to this speoificatio11,' in the presence of two subseribing'witnesses,this 13th day 01' April, A. D. 1883.- I

NICOLAUS AUGUST OTTO.

.Wit-nesses:

.lH. REITMANN, SAMUEL SPACKMAX.