USRE11909E - Gas-engine - Google Patents

Description

N0. ||,909. Reissued May 28, l90l.'

' o. F. soon.

V GAS Emlyn-z.

(Application filed Dec. 29, 1900.) -3 sheets-shag g PH Nu. ||,9n9. Reissued May 28; 190i. o. F. GOOD.

GAS ENGINE.

(Application filed Dec. 29, 1900.)

3 Sheets-Sheet 2 UNITED STATES PATENT -OFFICE.

OLIVER GOOD, OF DAYTON, OIIIO.

GAS-ENGINE. I

SPECIFICATION forming part of Reissued Letters Fatent No. 11 ,909, dated May 28, 1901. Original No. 634,686, dated October 10,1899. Application for reissue filed December 29,1900. Serial No. 41,550-

To all whom it may corms/1%:

Be it known that I, OLI V'ER F. G OOD, of Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements inGas-Engines; and I do hereby declare that the following is a full, clear, and ezgact description of the invention, that will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the characters of reference marked thereonflvhich form a part of this specification.

My invention relates to improvements in gas-engines, and has for its object simplicity and cheapness of' construction, especially of the valve-box and its accompanying parts;

1 also, to provide a device in which the valve mechanism and governor may be operated by the use of but a single cam and cam-rod; to

provide an engine which will run equally as well in either direction, and to provide a valve which shall serve both as an exhaust and inlet valve, whereby the supply of cool air and gas passing over the valve as an inlet-valve will aid in cooling the valve, which usually grows very hot by contact with the escaping burned gases. I attain these objects by means of the devices and arrangementsof parts here inafter described and shown, and illustrated in the accompanying drawings, made part hereof, in which Fignre l is a side elevation of my engine, showing the parts in place; Fig. 2, a central longitudinal elevation, in vertical section, of the valve-box hereinafterreferred to, taken on line B, Fig. 4; Fig. 3, a top plan view of said valve-box with a portion of the,cover broken away; Fig. 4:, a transverse sectional view of said valve-box, taken on line A, Fig. 3, viewed from the left; Fig. 5, an end e1evation of said valve-box viewed from the left in Fig. 1, with capan'd main valve' removed; Fig. 6, a vertical transverse section of the 'cyli'nder on line C, Fig. 7; Fig. 7, a side elevation of the cylinder with the valve-box removed.

Like letters-and numerals of reference indicate like parts throughout the drawings.

'In the drawings, A is the base of my cngine, upon which is secured and supported the cylinder O is the crank-shaft, journaled upon the base, connected by a connecting-rod to the piston (not shown) and carrying in the usual K is the gas-supply tube, and K theairsupply tube-for the burner. Onithe gl'rivingshaft is a pinionli, engaging with and proportioned to make two revolutions to one of a gearwheel M, journaled upon the base. Upon the hub of this gear-wheel is a cam 01 eccentric N, which is symmetric in outline; so that its throw is the same when rotated in either direction. Pivoted upon the base at. 0- is a rocker-arm O, which pivotally supports the main valve-rod P. This rod has at one enda cam-roller p, which takes the cam N and slides in a bracket 19', secured to the cylinder.

In the valve-box is a chamber 1, into which lead gas-pipe F and air-pipe G and in which the gas and air aremixed. Leading fromthe chamber 1 is a port 2, leading to the explosion-chamber of the cylinder, which port, as hereinafter described, becomes alternately an admission and anexhaus't port. Between the the valve. This spring is interposed between.

a nut on the end of the stem and the bottom of a socket in the wall of the valve-box,.as

appears in Figs. 2 and 4'. In port 2 is a valve 4, controlled by.valve-stem 5, having spring 5, (see Fig. 1,) which holds the valve 4 normally closed. Leading from chamber or port 2 is an exhaust-port 6, which extends through an opening in the cylinder, as shown by dot 23 stein 9,'whi

tedlines in Fig. '7, to the. exhaust-pipe ll.

Between the port or chamber 2 and the exhaust-passage 6 is a valve 7, seated from above Secured to the m ain valve-rod is a bracket or'hanger 10, upon which is pivotal'ly mounted the governor. This governor is of the gravity orli nertia type and has projecting forward from its pivoted weight 11 a finger 12,.adapted when in horizontal position or nearly so, to

engage the notched extremity 13 of the valve- I stem 9, whichco'ntrols the valve 8 in the gasinlet E. ,Depending from the valve-stem 5 and rigidly secured thereto is an arm 13-,

which forms a support and guide for the valveendfof said a'rm.

The operation of my engine is as follows: Assuming that the partsiare assembled as above described, .that the ignition-tube I is .30 heatedto a proper degree, and thatthe mixed gas and air are compressed within the explo si'on-chamber andwithin the ignition-tube I;

the explosion now takes place and the piston is driven forward,communicating motion through the connecting-rod and crank-shaft to the fly-wheel in the usual mannert At this point all the working valves are closed and exhaust takes place through. the open exhaust-port into the pipe H. (See Fig 7.)

c The 'caln oneccentric through gears L and M now moves the valve-rod P outwardly and thro'ughvalve-stem 5'0pens the valve 4, per

. mit'ting the escape of theremaining burned gases asthey are expelled by the return of the piston to its starting-point. The gases thus expelled pass out through port 2',lift the valve 7, and through passage '6. escape through exhaust-pipe H. The cam N now holds the valve 4 open, while the piston again moves forward,

0 which movement permits the valve 7 to close by its own weight, and the valve 3 is caused to open by the vacuum formed by the movement of the piston, which permits air to enter behind the advancing piston. The air thus taken is 5 5 expelled by the alternate backward stroke of the piston over the valves4 and 7. At each alternate forward stroke air is in this man ne'r drawn in and by the alternate backward stroke expelled until the next explosion I do takes place,- (which is determined 'by thespeed of the engine through the governor',) thereby cooling the exhaust-valves and to a great extent overcoming the difliculty arising from the undue heatof the exhaust-valves and their adjacent parts. The governorand admitting gas to the explosion-chamber. I The governor-weight 11 is regulated by means by lessening the tension'on said spring.

ch'slides in an openingin the lower the weight will tilt sufficiently to throw its .arm upwardly and out of linewith the valvestem 9. Otherwise the arm will come in contact with the notched extremity 13 of the valve-stem 9, thus pushing open the valve 8 of a compression-spring 11 upon the bracket 1 10, the tension of the spring being controlled by a set-screw 11; Thus by means of the tension-spring, which rests upon the arm 12, the explosion-point in the speed of the engine is established and the valve 8 may be compelled to operate at each alternate stroke of the engine. The -speedniay be diminished It will'beseen that this arrangement of the'governorand the valves provides for their proper working and the regulation of the speed of the engine withthe use 'of but a single cam or eccentric and rod, thus dispensing with the multiplicity of parts usually encountered in'connecting the flywheel and its shaft with the governor and with the valve mechanism of the engine. v Having described my invention, what I claim, and desire to secur'eby Letters Patent,

1. In an explosive-engine, the combination with a cylinder, of a valve-boxhaving a gas and air-induction 'port therein, a vertically" operating valve in said port, an ed u'etionport in said valve-box, a valve in said eduction po'rt,*a port connecting the induction and eduction ports with the cylinder, and a positively-operate'd valve in said port, substanm5 tially as specified. s. v

' 2. In an explosive-engine, thd combination with a cylinder, of a valve-box, a gas and air induction port therein, a vertically-operating valve in said port, an, eduction-port, a verti- Ira cally-operating automatic valve in the latter port, said valves having the same. vertical axis, a positively-operated valve intermediate the two valves and thecylinder, and a chamber common to said valves, substantially I as set forth.

3. In an explosive-engine, a cylinder, a

valve-box, a gas and air induction port therein, a vertically-operating automatic springactuated valve in said port, an eduction-port, 12c and a vertically-operating valve in the latter port, combined with a positively operated valve 8 which is held normally closed by a spring, and a positively-operating valve intermediatethe two valves and cylinder, and a chamber common to said valves, the two automati'callyoperating valves having the same vertical axis, substantially as set forth.

4. In an explosive-engine, the port 2, the spring-actuated valve 3, the gravity-valve 7 1 0 placed in the same axial line with the valve thereon; the parts being combined and ar- 3 and moving inthe same direction, a val e ranged to operate substantially as shown. 10 4t placed upon the valve-rod 5, and the sprir Intestimony whereof I affix my signature 5 for holding it normally closed, combined in presence of two witnesses.

5 with the chamber 1, the gas-inlet F leading OLIVEI l GW )1 I intocsaid chamber 1, the gas-inlet valves itnessesr -controlling-theadmission ofgasinto thechal'm R. N. BRUM'BAUGH, her 1, the valve-rod i) and thespringfi placed J. MUCAilTY.

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