US722672A - Valve for gas-engines. - Google Patents

Description

110.722,672. PATLNTLD MAR. 111, 1903.

- L. P. BURGER.

VALVE POR GAS ENGINES. APPLIOATION FILED Novfn, 1201. A no MODEL. 2 HLETs-SHLLT 1,.,

No. 722,672. PATBNTBD MARi 17, 190s.

' L..F.BURGER. f

VALVE FOR GAS BNGINES.

APPLICATION FILED NOVQll, 1901 [NVE/v TOR UNITED STATES vPATENT ERICE.

LEOPOLD E. BURGER, OE'ANDERsON, INDIANA, Ass'IGNOR 'ro vvOOLLEIT EOUNDRY AND MACHINE WORKS, OE ANDERSON, INDIANA.

VALVE FOR GAS-ENGINES.

SPECIFICATION forming part ofV Letters Patent No. 722,672, dated March 17, 1903. Application iiled November 11, 1901. Serial No. 82,070. (No model.)

To @ZZ whom it may concern.:

Be it known that I, LEOPOLD F. BURGER, a citizen of the United States, residing at Anderson, in the county of `Madison, State of Indiana, have invented certain new and useful Improvements in Valves for Gas-Engines, of which the following isa specification, reference being had therein to the accompanying:

drawings.

This invention relates to gas-engines, and particularly to that class in which a liquid fuel is admitted at the intake-valve and af-- terward vaporized.

The invention has for an object to improve' the construction of the fuelcontrolling valve, whereby the air and fuel inlets may be opened in unison or the flow of Oil stopped,r

While the air-valve continues to open by disconnecting the valves.`

A further object of theinvention is to improve the construction of the f uelinlet,

whereby the same discharges behind the airdetail section of the fuel-inlet-valve casing.k

Fig. 5 is a vertical section through the fuelreservoir, and Fig. 6 a horizontal section on the line 6 6 of Fig. 5.

Like letters of reference refer to like parts in the several gures of the drawings.

The present invention is capable of application to any suitable class of engines, but

for the purpose of illustration is herein shown f in connection with an engine and valve, op,- erating mechanism disclosed in my application, Serial No. 79,374, iiled of evendate herewith, so that the principal features of novelty herein refer to the feed of liquid fuel and means for controlling the same.

In the form of engine shown the letter A designates a cylinder having therein a piston A', connected to drive a crank-shaft A2. This cylinder is provided at one end with a combustion-chamber A3, communicating with an exhaust-valve A4, adapted to Vbedriven by a gearing A5 from the crank-shaft A2. This shaft is also provided with a ball speedgovernor, as indicated at C, Which is pivotallyV connected to a sliding collar C', bearing against a bell-crank C2, from which a connecting-rod C3 extends to a slide-bar G for .operating the valve-connecting device, all as more fully shown and described in the application hereinbefore referred to.

Projecting into the combustion-chamber A3 is a valve-casing D, carrying at its end an air-valve D', which is provided with a stem D2, passed through a bearing D3 and having its extended end D4 projectedbeyond the casing and bearing a collar D5. The casing D is provided below the bearing D3 with aseries Yof air-inlet openings D6, while the stem D2 of the air-valve has secured thereon a bearing-nut D7, against which a spring E bears and extends to the bearing D3 for the purpose of restoring the valve to its seat. This spring E is coiled, and within the same an oppositely-coiled heavier spring E' of greater tension and less length is disposed, so as'to check or cushion the Opening action of the valve. The lower portion D8 of the valve-casing is provided with a guide-sleeve D9, through which the extended portion D4 of the valve-stem passes. Between this stem and guide a tubular extension F from a push- Yplate F is disposed, and this plate is adapted Vto rest in a suitable seat F2, While the end of the extension thereof is provided with a pivoting-lug F2, carrying a pawl G', controlled vby the slide-bar G by means of the pins G2,

carried by said bar at opposite sides thereof, While th'epoint of the pawl or dog G' is adapted to bear against the collar D5 when the parts are connected together,as shown in Fig. 3. Between the lug F2 and the body of the valvecasing a vspring E2 extends for the purpose of restoring the push-plate F and holding the same upon its seat. When the valve-casing D is placed in position upon the engine, as

l shown in Fig. l, the air-inlet D6 communicates with an air-space A7 in the engine-casing which is open to the atmosphere.

The fuel-valve H is provided with an extended stem H', resting upon the push-plate F, and is held in contact therewith by means of a coiled spring H2. This valve is located within a casing H3, provided With a valveseat H4, an injector-opening H7, and a feedchannel H5, communicating at it its end With a reservoirI, Figs. 5 and 6. Above the valveseat H3 a removable cap H6 is applied for retaining the spring H2 in position above the valve. The reservoir is supplied with a suitable inlet-opening I and outlet I2 at one side, which communicate with the pipes Is and I4., respectively, the former of which extends through a pump I5 to a storage-tank I6 for the fuel, While the latter communicates directly tween the reservoir and tank by means of the pipe I4, as shown in Fig. l. The pump I5 may be of any desired construction-for instance, provided With a depressible piston I, adapted to be restored by a spring I7 and to bek operated by a crank-arm J, having the member J thereof in contact With a drivingcam J2. Upon the shaft of this cam a pinion .I3 is provided, Which in turn meshes with a pinion J4 upon the crank-shaft A2 of the engine. The result of this connection is to operate the pump in the continued rotation of the shaft, so as to supplyaconstant and suficient quantity of fuel under an equal pressure to the fuel-valve H by gravity from the reservoir.

In the class of engine shown when the piston A is moved outward air and fuel are drawnv into the cylinder through the airvalve D' and the fuel-valve H, which are connected to operate together by means of a pawl, carried by the push plate F. The oil or other fuel which passes the valve H when the same is raised by the push-plate F passes through au injector or inlet H7, formed in the casing H3, thus striking the springs and being thoroughly distributed, so that it is vaporized almost instantly. This vaporizing occurs in the body of air which has entered through the ports D5, and a thorough mixing is thus eected. In the return movement of the piston the air and fuel comprising the explosive mixture are compressed and then ignited by any suitable means. The force of the explosion drives the piston outward again until at the end of the stroke the exhaust-valve is opened and retained in that position until the piston has returned to lar on the stem of the air-valve, thus leaving this valve free tooperate under the suction from the engine, While the fuel-valve H will not be effected thereby. The capacity of the passage H5 may be controlled by means of a needle-valve H8, located therein, as shown at IS in Fig. 5.

The details of construction described and illustrated in my application hereinbefore referred to will not be specifically described in this case, as they are not of an essential character to the operation of this invention.

It will be obvious that changes may be made in the details of construction and configuration Without departing from the spirit ofthe invention as dened in the appended claims.

Having described myl invention and set forth its merits, what I claim, and desire to secure by Letters Patent, is-

l. In a gas-engine, a valve-casing comprisinga mixing-chamber, an air-Valve at one endl of said chamber provided With a stem extending therethrough, a fuel-valve and casing located Within said chamber, a push-plate slidingly mounted upon said stem' Within the mixing-chamber for operating said fuel-valve, and means for connecting said plate to said stem; substantially as specied.

2. In a gas-engin e, a valve-casing comprising a mixing-chamber, an air-valve at one end of said chamber provided with a stem extending therethrough, a fuel-valve and casing located Within said chamber, a push-plate slidngly mounted upon said stem Within the mixing-chamber for operating said fuel-valve, and a shifting device carried by said pushplate to engage the free end of said stem; substantially as specified.

3. In a gas-engine, a valve-casing comprising a mixing-chamber,an air-valve at one end of said chamber provided with a stem extending therethrough, a fuel-valve and casing located within said chamber, a push-plate slidingly mounted upon said stem Within the.

mixing-chamber for operating said fuel-valve, means for connecting said plate to said stem, a reservoir communicating with said fuelvalve adjacent thereto, a supply-tank located below said reservoir, a feed and return pipe circuit between said tank and reservoir, and

`a pump in said circuit to effect the feed to the reservoir; substantially as specified.

' 4. In a gas-engine, a valve-casing comprisinga mixing-chamber, an air-valve at one end thereof and provided with a stem extending therethrough, a push-plate Within the mixing chamber having` a tubular extension around said stem, means for connecting said extension and stem together and for disconnecting the same, a fuel-valve and casing disposed Within said mixing-chamber, and a stem from said fuel-Valve contacting With the push-plate for operating said fuel-valve in the movement of said plate; substantially as specified.

5. In a gas-engine, a valve-casing comprising a mixing-chamber, an air-valve at one end ICO IIO

thereof and provided with a stem extending therethrough, a push-plate within the mixing chamber having a tubular extension around said stem, means for connecting said extension and stems together and for discon-v necting the same, a fuel-valve and casing disposed within said mixing-chamber, a stem from said fuel-valve in contact with said plate, a restoring spring above said fuelvalve, a restoring-spring for said push-plate, a restoring-spring for said air-valve, and an inlet-passage in the casing of said fuel-valve communicating with the mixing-chamber; substantially as specified.

6. In a gas-engine, a valve-casing comprising a mixing-chamber, an airvalve at one end thereof provided with a stem passing therethrough, a restoring-spring surrounding said stem, a fuel-valve discharging within said chamber, and a valvecasing for said fuelvalve having an opening adapted to discharge upon said spring; substantially as specified.

7. In a gas-engine, a casing for a fuel-valve comprising a spring-chamber at one end, a guide-sleeve at the opposite end having adjacent to said chamber a discharge-chamber and opening therefrom laterally to said sleeve, a valve-seat disposed between said springchamber and discharge-chamber, and a feedpassage communicating with said springchamber and extending parallel with said guide-sleeve; substantially as specified.

8. In a gas-engine, an air-valve having an extended stem with contact means upon its free end, a push-plate provided with a tubular extension slidingly mounted upon said stem, a valve-casing provided with a seat for said plate and a guide for said tubular extension, a pivoted device upon the end of said extension to contact with the means upon the free end of said stem, a restoring-spring extending 9. In a gas-engine, an air-valve having an extended stem with contact means upon its free end, a push-plate provided with a tubular extension slidingly mounted upon said stem, a valve-casing provided with a seat for said plate and a guide for said tubular extension, a pivoted device upon the end of said extension to contact with the means upon the free end of said stem, a restoring-'spring extending between said stem and casing, a fuel-valve disposed within the casing at one side of said push-plate and having a stem in contact therewith, a crank-shaft for said engine, a speedgovernor on said shaft connected to operate said pivoted device, an exhaust-valve, an operating cam therefor driven by said crankshaft, and a fuel-pump communicating with said fuel-valve and driven by said crankshaft; substantially as specified.

l0. In a gas-engine, a valve-casing, an airvalve at one end thereof having an extended stem, a push-plate provided with a tubular extension around said stem, a valve-casing provided with a lug upon said extension, a restoring-spring extending between said lug and casing, a fuel-valve disposed at one side of said push-plate, a pawl pivoted to said extension, a collar carried by said valve-stem beyond said pawl, and means for moving said pawl into or out of the path of said collar; substantially as specified.

In testimony whereof I aix my signature in presence of two witnesses. l LEOPOLD F. BURGER.

Witnesses:

JESSE L. VERMILLION, EDWARD F. VERMILLION.

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