US615049A

US615049A - Martin henri rumpf

Info

Publication number: US615049A
Authority: US
Publication date: 1898-11-29
Anticipated expiration: 1915-11-29

Description

N0. 6l5,049. Patented Nov. 29, I898. NI. H. RUMPF.

INTERNAL COMBUSTION ENGINE.

(Application filed Dec. 8, 1897.)

No Modei.) 2 Sheets-Sheet l.

Q KN a INVENTOR; W/T/VE$'5$- I? f%/ w ATTORNEYS m: NORRIS QETERS co PHaYo-Lnm, wAsHmGvoN. o, c

No. 615,049. 7 Patented Nov. 29, I898. M. H. BUMPF.

INTERNAL COMBUSTIDN ENGINE.

(Application fil ed Dec. 8.1897.) [No Model.) 2 Sheets-Sheet 2.

WiTNESSES: E INVENTOR BY ll" a!" {7- ATTORNEYS NITED STATES MARTIN HENRI RUMPF,

OF BRUSSELS, BELGIUM.

INTERNAL-COMBUSTION ENGINE.

SPECIFICATION forming part of Letters Patent No. 615,049, dated November 29, 1898.

Application filed December 8, 1897. Serial No. 661,143. (No model.)

To all whom it ntay concern.-

Be it known that I, MARTIN HENRI RUMPF, a citizen of Brazil, residing in Brussels, in the Kingdom of Belgium, have invented certain new and useful Improvements in or Relating to Internal-Combustion Engines, of which the following is a specification.

My invention relates to gas-engines; and it involves certain improvements in engines of this nature that will be hereinafter made to appear in the following description of an engine provided with such improvements and illustrated in the accompanying drawings.

In said drawings, Figure 1 is a vertical longitudinal sectional view of the main cylinder, piston, and explosion-chamber of the engine, illustrating the position and arrangement of certain valves. Fig. 2 is a horizontal longitudinal sectional view of said cylinder, piston, and eXplosion-chamber,the pump and its reservoir, and means auxiliary to the pump and intermediate the same and the cylinder for conveying the combustible gases from their supply to the explosion-chamber, said view being taken on the line 00 5c of Fig. 1. Fig. 3 illustrates a certain automatic means for controlling the emission of air from the reservoir, said view being taken on the line w x of Fig. 1. Figs. 3 and 3' show in detail the means illustrated in Fig. 2 for conveying the combustible gases from their supply to the explosion-chamber. Fig. 4 illustrates automatic means under control of the enginegovernor for regulating the supply of combustible gases that are conducted to the explosion-chamber; and Fig. 5 shows in detail a portion of the mechanism represented in Fig. 3.

A is the main cylinder of the engine. Said cylinder communicates directly with the explosion-chamber C, situated at its rear end, andis open at its front end. The explosion chamber is provided with an air-inlet valve cl, that is spring-actuated and adapted to open when the external pressure is greater than the internal pressure on said chamber, and with an inlet for the combustible gases,which latter inlet is provided with an atomizer f and communicates with a tube 19, connecting said inlet indirectly with the gas-supply through a device, hereinafter to be described, for propelling the gases into the explosion-chamber.

Said cylinder is also provided with a series of perforations c, constituting exhaust-ports. B is the piston for said cylinder, and B is its piston-rod, said piston-rod being pivotally connected to the piston. The piston-head is provided with a disk-valve a, and said diskvalve is adapted to be opened at each backward thrust of the piston by an extension I), projecting longitudinally from the contiguous end of the piston-rod in a plane appreciably distant from that of the longitudinal axis of said rod.

P is a pump provided with suitable suction and discharge valves, and R is an air-reservoir in which air is compressed by said pump, communication between the two being afforded through the discharge-valve p of the pump. The piston of said pump is driven by means of a piston-rod E and a connecting-rod D, pivotally connected at their adjoining ends by a pin it, arranged to slide in a guide mounted on the engine-frame, said rod D being connected to an eccentric keyed on the drive-shaft of the engine.

S is a casing or housing mounted at one end upon the reservoir R and extending from the same over the explosion-chamber O. Said casing orhousing includes a chamber h, situated over said reservoir, and a cylinder i, merging into said chamber and constituting the overhanging portion of said casing or housing. Through its upper wall said cylinder communicates with a gas-supply through chamber h communication with the air-reservoir R is afiorded through the valve-controlled opening g. The valve 9 for this opening is spring-actuated and is automatically operated, as hereinafter described. The pipe 10 connects said cylinder 1' with the explosionchamber through two openings 0 and q, situated in the lower wall of said cylinder. Z is a slide-valve contained in said cylinder 2' and normally held away from the head of the cylinder by a spring 8, disposed between the head of said cylinder and the adjoining end of said slide-valve. Said slide-valve is penetrated by a transverse duct n, which alternately registers with and conveys gas from the one to the other of the openings m and 0, which are arranged out of opposition to each other.

The slidevalve is actuated by compressed the tube m, and through the lower wall of the ICO air admitted through the valve-controlled opening g into the chamber 7L. By reducing the end of said slide-valve that is contiguous to the chamber 7L and attaching thereto a disk t", that closely fits in the cylinder, an annular chamber q is formed. This chamber communicates with the pipe 1), above described as providing communication between the cylinder at opening q and the explosion-chamber, and when the compressed air which is admitted to the housing 7t has driven the slide-valve with the charge which it carries in its duct 91 to its extreme position, where said charge can escape into the pipe 1) through the opening 0, and said slide-valve again returns, any air contained under compression in the tube 1) may be allowed to escape through said annular chamber and an opening 2- in the wall of the cylinder.

The valve 9 is operated from the pistonrod of the pump through an intermediate mechanism similarin function, construction, and operation to that shown and described in United States Patent No. 584,097, issued to me June 8, 1897, to which patent reference may be had for a description of said mech anism.

In Figs. 2, 3, and 3" I have illustrated a device, already described, by which the supply of gas admitted through the cylinder t to the tube 1) is regulated, and in Fig. 4 I have shown means whereby said device may be controlled from the engine-governor. The means referred to consists of a rod that penetrates the head of the cylinder t' and also the slide-valve Z. This rod has bearings in the cylinder-head and the disk 2" and is pro-' vided with a transversely-arranged duct 11', that registers with the duct a of the slidevalve. The outer end of said rod carries a crank d, and to this crank is connected (in such manner as to permit perfectly free reciprocation of the crank with the slide-valve) one end of a connecting-rod ,2, supported be tween its ends in a bracket 3 mounted on the engine-frame, and having its other end connected to the lower arm of a bell-crank lever w, fulcrumed at ,2 on the engine-frame. The other arm of said bell-crank lever is operat-ively connected to a centrifugal governor z. Connected at one end to an eccentric on the drive-shaft of the engine is ahorizontally-reciprocatory shaft F, situated in a plane that is slightly above the normal position of the extremity of the upper arm of the bell-crank lever. Extending from the free end of said shaft F and pivotally connected thereto by means of a pin a, that slides in a suitable guide mounted on the engine-frame, is an arm G, having a notch t in its free end and supported in a horizontal position by means of a projection v, extending from the shaft F. The notch 15 is adapted to receive a pin 3 carried on the end of the upper arm of the bell-crank lever whenever the said lever, under the influence of the governor, is moved out of its normal position. It will be obvious from the foregoingthat whenever the speed of the engine increases beyond a predetermined degree the bell-crank lever is drawn by the governor into such a position as to be engaged by the arm G in its reciprocations with the shaft F and suddenly thrown upward, thereby momentarily effecting the closure or partial closure of the passage through the duct n, and consequently interfering with the supply of gas until the speed of the engine has sufiiciently decreased to allow the governor to move the bell-crank lever to its normal position.

The operation of the engine may be thus described: In starting the engine the pump is first thrown out of gear and is disconnected from its operating means. The pump is then worked by hand in order to fill the reservoir. Having filled the reservoir, the disconnected parts are again placed in operative arrangement and the fiy-wheel of the engine given a turn by hand in the direction indicated by the arrow in Fig. 1. The piston-rod of the pump is consequently reciprocated and'effects the opening of the valve 9, thereby permitting compressed air to flow into the chamber h back of the slide-valve. The compressed air moves said slide-valve and the latter carries its charge of gas in the duct n to the opening 0, where, upon its escape into the tube 1), it is driven onward into the explosion-chamber by the air which, having driven the piston far enough, escapes into tube 1) through the opening q. The explosion being effected, the piston of the engine is driven forward in the cylinder A, and when the piston has passed to a certain point, the pressure within the cylinder being less than the external pressure of the atmosphere, air enters at the valve d in the explosion-chamber and fills the same and the cylinder, driving out the consumed gases through the exhaust-ports 0 when the piston has passed them. The return of the piston to compress the air contained in the cylinder then follows. All of the air contained in said cylinder, however, is not compressed, but just enough is permitted to escape through the valve a of the piston, which is caused to open in an obvious manner by means of the extension Z), to leave the proper quantity in the explosionchamber for forming the mixture with the next charge of gas.

The operation of that portion of the mechanism of the engine which controls the amount of the charge that escapes through the duct 17. from the supply-pipe m has been hereinbefore referred to, and further description thereof is believed to be therefore unnecessary.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a gas-engine, the combination with the main cylinder and its explosion-chamber, an airreservoir communicating with said chamber, and a gas-supply, of a slide-valve situated between saidair-reservoir and the explosion-chamber, actuated by the air in the former, and adapted to convey charges of gas from the gas-supply to the latter and to control the communication between said air-reservoir and the explosion-chamber, substantially as described.

2. In a gas-engine, the combination with the main cylinder and its explosion-chamber, an air-reservoir, and a gas-supply, of a housing affording communication between said reservoir and the chamber and communicating with the gas-supply, and a slide-valve situated in said housing, actuated by the air in said reservoir and adapted to convey gas from the gas-supply to the explosion-chamber and to control the communication between the said reservoir and the chamber, substantially as described.

3. In a gas-engine, the combination with the main cylinder and its explosion-chamber, an air-reservoir and a gas-supply, of a housing communicating ,with the said gas-supply and with the reservoir, a forked tube connecting said housing with the explosion-chamber, communication between said chamber and the reservoir being afforded through one of the members of said tube and the housing, and a slide-valve in said housing actuated by the air in the reservoir and adapted to convey gas from said gas-supply to one member of said tube and to control the communication between said explosion-chamber and the resand adapted to convey gas from said gas-supply to one member of said tube and to control the communication between said explosionchamber and the reservoir through the other member of said tube, and a spring-pressed valve actuated from the pump-piston and controlling the communication between said housing and the reservoir, substantially as described.

5. In a gas-engine, the combination with the main cylinder and its explosion-chamber, of a gassupply communicating with said chamber, a slide-valve for controlling the communication between said gas-supply and the chamber, a rod projecting through said slidevalve and provided with a transverse duct adapted to register with the duct in the slidevalve, a governor connected to and adapted to rotate said rod, and means operated from the main shaft of the engine and independent of said governor for manipulating said rod when the speed of the engine is abnormal, substantially as described.

6. In a gas-engine, the combination with the main cylinder and its explosion-chamber, of a gas-supply communicating with said chamber, a slide-valve for controlling the communication between said gas-supply and the chamber, a rod projecting through said slidevalve and provided with a transverse duct adapted to register with the duct in the slidevalve, a lever connected to said rod and the engine-governor and adapted to rotate the former, and a reciprocating element operated by the main shaft of the engine and adapted to engage said lever so as to manipulate the rod when the speed of the engine becomes abnormal, substantially as described.

In testimony whereof I have hereto set my hand in the presence of the two undersigned witnesses.

MARTIN HENRI RUMPF.

IVitnesses ALFRED WUNDERLIOH, GREGORY PHELAN.