USRE12255E - Engine - Google Patents

Description

Nd. 12,255. l BEISSUED AUG. 9, 1904.

o. A. BRADBN.

ENGINE.

APPLIUATION IILED APR. 6, 1903.

UNITED: STATES Beissued August 9', 1904;

PATENT. OF CE;

CHARLES A. snanniv. or BUTLER, PENNSYLVANIA,-ASSIGNOR TO THE.

BRADEN ens nus-inn COMPANY, A CORPORATION or WEST VIRGINIA.

ENGINE.

SPECIFICATION forming part of Reissued Letters Patent No. 12,255, dated August 9, 190 4. ()riginal No. 715,008, rls f i-dt giember 2, 1902. Application forreinsue filefl April 6, 1908. Serial No. 151,927.

To all whom it may concern:

Be it known that I, CHARLES A. BRADEN, a "esident ofButler, in the county of Butler and State of Pennsylvania, have invented certain new and uset'ul Improvements in Engines; and

1 do hereby declare the following tobe a full,

' clear, and exact description of the invention,

such asvwill enabie others skilled in the art to which it appertains make and use the same.

7 Myinrention relates to an improvement in ,engines, the object of the invention being to produce an engine which shall be adapted to be operated by the pressure of gas and steam applied independently of each other.

gas-engine.

A further object is to provide a combined steam and gas engine which will be neat in appearance, strong and durable, and most efiectual and useful when in operation.

With these objects in view the invention consists in certain, novel features of construction and combination and arrangements of parts, as will be more fully herein described, and pointed out in the claims.

The accompanying drawing is a view in section illustrating my improvements.

1 represents a gas-engine, and 2 a steam-engine connected therewith and disposed in the same plane. A partition 3 is disposed between the gas-engine cylinder and steam-engine cylinder and is secured in place by means of bolts 4, which'pass through openings in a flange a: on the gas-engine, thence through 35 the partition 3, and thence through a flange '1' on the steam-engine, and said bolts are secured in placeby means ofnuts 5, as, shown. The partition 3 thus constitutes heads for the abutting ends of the two engine-cylinders. The gas-engine cylinder is provided in its wall surrounding the eXpiosion-chamber 7 with a water-jacket 8, which is preferably constantiy supplied from any convenient source through an inletrpipe c, the water escaping through a of the gas-engine cylinder 1 constitutes a mix- A further object is to provide a reversible v larger outlet-pipe a and thus the water con stituting tne wateracket 1s kept in constant ing-chamber 9. The chamber 9 is of a larger diameter than the explosion-chamber and is connected therewith by a passage 10, which communicates with the explosion-chamber 7 a point'approximately in alinement with an exhaust-port 11 of the explosion-chamber. A suitable gas-inlet tube 12, having a spring' actuated valve 13, communicates with the-mixing-chamber 9, and an air-inlet tube 14, having a spring-actuatedvalve 15, also communicates with said mixing-chamber. Any approved igniter 6 may be employed and is preferabiy located at the extreme end of the explosion-chamber, as usual. A piston 16 is disposed within the explosion-chamber and is secured to a pistonrod 17, which extends through the'partition or common head 3, where any approved packing 18 is provided. The piston-rod 17 extends into the steam-engine cylinder, wherein it is provided with a piston 19.- A pitman 17 is secured to the piston of the steam-engine and is connected with any approved operating mechanism. Any approved valve mechanism .00 may be employed for the steam-engine, as the particular form of steam-engine is immaterial.

A valve-casing 18 is disposed near the end of the explosion-chamber and communicates therewith by means of a tube or pipe 20. A pipe 21 communicates with said valve-casing in alinemejnt with the pipe 20 for exhausting the gas therefronn -A valve 22 is disposed in said casing 18, and said valve is provided with an opening 23, adapted to aline with the pipes or tubes 20 and 21 to permit the gas to exhaust from the explosion-chamber. A rod.

24 is secured to the valve22 and extends through one side of the valve-casing 18, where any approved packing 25 is provided, and is connected. throughthe' medium of a lever 18, with a rod 18", andthe latter is connected,

through the medium of an engine-link B, with the valve'w of the. steam-engine. Hence itwill be seen that when the opening 23 is. in

alinement with the pipes or tubes 20 and 21 the combined gas-and air can escape from the explosion-chamber and prevent any explosion therein, and when the valve is pushed to one side, with the opening 23 out of alinement ton again moves outwardly,

piston 16, and the chamber 9 with the tubes QO'and 21, the valve will effectually cut off any escape of gas and air from the explosion-chamber, and the gas-engine will be free to perform its functions.

The operation of my improved gas-engine is as follows: Air and gas are admitted to the mixing-chamber 9, and'on the forward thrust of the piston 16 the mixed air and gas is forced through the passage 10 into the explosion chamber 7, and, before the airland gas have time to escape through the exhaust 11 .the piston returns, closing both passage 10 and exhaust 11 and compressing the air and gas in the outer end of the explosion-chamber, where it will be ignited, the resulting explosion causing the piston 16 to be propelled forwardly, the burned gases finding an exit through the exhaust-pipe 11, When the pisit will compress at the same time 1 gas into the mixing chamber for the succeeding charge. When it is desired to reverse the gas-engine, the engine-link B is elevated so as to shift valve :1; through the medium of rod (0'. The valve y, located in steam -inlet pipe is opened, and the valve it having been shifted so as to another explosive charge and serve to draw air and cover port 2 the steam is admitted to the steam-cylinder 2 through the port .2, in front of the piston 19, and forces this piston, together with the piston 16, rearwardly. The mixingchamber 9 is necessarily of greater diameter than the explosion chamber 7 for the reason that the explosion chamber must act as the working barrel or cylinder for the must be of a diameter capable of admitting a sufficient quantity of the explosive mixture. If the gas-engine cylinder extendedinto the steamcylinder, such space would be provided for; but since I attach direct to the end of any ordinary steam-engine without altering the construction of the latter I obtain the necessary mixing-space by increasing the diameter of the mixing chamber 9 beyond the diameter of the explosion-chamber 7. The link B is connected to rods B B, attached to eccentrics, (not shown,) so that a rocking niovcmentwill be imparted to the said link in order to move the valve (1:, as in the usual construction of valve-gearfor steam-engines. At its lower end the link B is pivotally connected to an auxiliary link C, provided in its lower portion with'a slot 0 to receive a pin or stud carried by one arm of a bell-crank D. This bell crank is pivotally mounted on the engineframe and has its other arm pivotally connected to the rod 18'. The link in eleva tion carries with it the auxiliary link (1, and by reason of its being pivotally connected thereto no rocking movement is imparted to the link fl, and when the pin in the bell-crank arm engages the lower end of thcslot ct, the bell-crank is rocked on its pivot, so as to actuate rod W", and through the medium of the lever 18 and rod 24 the valve 22 isshifted so as to slice its opening 23 with the pipes 20 and 21 in order that the gasandair which was compressed in the explosion-chamber? by the rearward stroke of the piston 1 6*will be discharged through said pipes 20 and 21.

pistons toithe position so as to admit steam through 175; in steam-inlet pipe 3 is hell-crank engages the upper end of slot c.'

the bell-crank and rod 18 are actuated so" as to move valve 22 to a position Wltll itS opening 23 out of alinement with the tubes 20. and, 21, andthegas-engine will then be free to again operate and has been effectually reversed...

It will be readily seen that it is very desirable, especially in Oil countries, to have engines which can be readily reversed.v Heretofore gas-engines have been used to pump wells, and steam-engines are left in position to handle tubing, rods, and the like because of their being capable of being readily reversed. By my improved engine I am enabled to vemploy same not only for pumping,

but also for the raising and lowering of the tubing, rods, and the like Without any change of engines other than the opening of a valve to start the steam-engine for thepurpose of reversing the gas-engine.

Various slight changes might be resorted to in the general form and arrangement of the several parts set forth without departingfrom the spirit of my invention, and hence Iwould have it understood that 1- do not wish to limit myself to the precise details set forth,'but

consider myself at liberty to make-such slight changes and alterations as fairly fall within the spirit and scope of my invention.

Having fully described my invention, What I claim as new, and desire to secure by Letters Patent, is a 1. The combination with asteam-engine cylinder having a piston working therein, of a head forming one end of said cylinder with the piston-rod Working therethrough, and a gas-engine cylinder, connected to said head in alinement with the steam-engine cylinder, the

' head forming one end of the gas-engine cyltoo maliy operated independently of the steam engine and reversed through the medium of the ttcr, and means for exhausting the expiosive mixture from the explosive-chamber oi the gas-engine when steam is admitted to the ste: [meg finder, substantially as described.

3. The combination with a steam-engine of gas-engine connected to the steam-engine in alinenient therewith, the steam-engine acting when started to reverse the gas-engine, a partition separating the cylinders of the two engines and forming one head of each cylinder, the gas engine normal y operating independently oi the steam-engine, an explosion-chanr' her, and a mixing-chamber in the cylinder of the gas-engine, the mining-chamber being of greater diameter than the explosion-chamber and in commnmcation through a port therewith, an exhanstwalve chamber in communication through a port with the explosion chamber, a valve in said exhaust-valve chamher, and means connected to the steam-engine adapted to'operat/said valve to exhaust the explosive-mixture from the explosion-chamber when steam is admitted to the steam-cylinder, substantially as described.

4. The combination with a steam-engine, of a gas-engine connected to the steam-engine in alinemcnt therewith, a partition separating the cylinders of the two engines and forming one head of each cylinder, the gas-engine normally operating independently of the steamengine, an explosion-chamber in the cylinder of the gas-enginaand a mixing-chamber in said cylinder 1n communication with the explosicnchamber and of greater diameter than said chamber, substantially as described.

5. in a combined steam and gas engindthe combinationwith a steam-engine cylinder, its piston, a piston-rod extending through both heads of said cylinder, and a reversing-gear,

of a gas-engine cylinder arranged. in axial alinement with the steam-engine cylinder and having its piston attached to the pistonerod of the steam-cylinder, and a mixing-chamber communicating with the gas-engine cylinder and arranged between the steam-engine cylinder and the gas-engine, cylinder and in axial alinement with both, said mixing-chamber be ing of a larger diameter than the gas-engine 5, cylinder, and means operable by the movement of the said. reversing-gear for eliminat ing gas from the gas-engine cylinder while the steam-engine is in operation, the said gasengine and steam-engine being severally op erable whereby the operation of either will discharge the contents of the mixing-chamber.

'6. In a combined steam and gas engine,"the combinationwith a steam-engine cylinder, its reversing-gear, its piston and'a piston-rod extending through both heads of said cylinder,

of a gas-engine cylinder arranged in axial alinement with the steam-engine cylinder and having its piston attached to the piston-rod of the steam-cylinder,- and a mixing-chamber communicating with the gas-engine cylinder and arranged between the steam-engine cyl inder and the gas-engine cylinder and in axial alinement with both, and means whereby the movement of the reversing-gear of the steamengine will open a port for the escape of gas from the-gas-engine cylinder, the said gas engineand steam-engine being severally cperable whereby the operatic of either will discharge the contents of the mixing-chamberl In testimony whereof l have signed this specification in the presence of two subscribing witnesses. a

. CHARLES A. BRADEN. Witnesses:

ALBERT L. Bowsnn, R. W LLnrrrs.

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