US269163A - teichmann - Google Patents

Description

(No Model.) a Sheets-Sheet? K. TEIOHMANN.

GAS ENGINE.

No. 269,163. Patented Dec. 12, 1882.

N. PEKEIN. MUMM- Wan. RC.

(No Model.) 3 Sheets-Shet 3. K. TEICHMANN.

GAS ENGINE. -'.l. I0.269,163. T Patented De0.'12,1882.

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Application filedAngust 14, 1882. (No model.) Patented in England April 28, 1882, No. 2,008; in France April 28, 1882, o. 148,644;

iiNiTEn STATES PATENT Frie KARL TEIOHMANN, OF STUTTGART, WURTEMBERG, GERMANY.

GAS-ENGINE.

SPECIFICATION forming part of Lett ers Patent No. 269,163, dated December 12, 1882,

in Belgium April 28, 1882, No. 57,745; in Italy April 28, 1882, XVI, 14,148 and XXVIII, 168; in Luxemburg May 1, 1882, No. 198.

and in AustiiaHungary July 7, 1882, No. 1,200 and No. 1,202.!

igniting the mixture, as more fully described hereinafter. y

In the accompanying drawings, Figure 1, Sheet 1, is a vertical section of a caloric or gas engine constructed in accordance with my invention; Fig. 2, a sectional plan of the same on the line 1 2, Fig. 1;- Figs. 3, 4, 5, 6, and 7,

Sheet 2, diagrams illustrating different modifications in the general arrangement of the main parts of the engine; Fig.8, Sheet 3, a face view of the seat for the slide-valve, showing the air, gas, and water ports; Fig. 9, a

transverse section of the slide-valve, seat, and

ports; Fig. 10, a view of the face of the slidevalve; Figs. 11 and 12, views showing the slidevalve in its two extreme positions; Figs. 13,14,and 15, sectional views of different forms of gas-igniting devices, and Figs. 16 and 17 views of the cut-off valve for the gas-supply.

The principal parts of the engine are thegas and air mixing chamber B, a pumping or compression cylinder, A, and its piston, and alarger expansion or working cylinder, G, and its piston, and the cran k-shaft, rods, and valve-gear.

- In Figs. 1 and 2 I haveshown the compression and expansion cylinders as arranged side by side, and the mixin g-chamber immediately underneath the compression cylinder, and the crankshaft and connecting rods above the cylinders; but it will be understood that the relative arrangements of the several parts may be modified as found convenient without departing from my invention. For instance, in Figs. 3, 4, 5, 6, and 7 I have shown diagrams sion-cylinder A.

the-mixing-chamber B through a conduit, B,

. containing the device forigniting the combustible mixture of air and gas entering said conduit from the chamber 13 through the outletport b,'controlled by the slide-valve D,Fig. l, Whichalsocontrols the air-inlet passage a, gasinlet passage d, Fig. 2 and port 0, forming the communication between these ports and the interior of the mixing-chamber and the compres- The construction of the slide-valve D and the arrangement of the ports are illustrated more fully in Figs. 8 to 12, inciusive,in which it will be seen that a cavity, 1), in the face of the valve, when the latter is in the position Fig. 12, forms a communication between the air-inlet a and passage 0 to the compressionchamber, and at the same time the passage 0, Fig. 10, in the valve is brought opposite the gas-inlet d, so that the gas will enter a chamber, f, in the rear of the piston, and thence pass through perforationsto the cavity b to be drawn with the incoming airiuto the cylinder 0 on the rise of the'piston in the latter. Unlike the -slidevalves of most gas-engines, the valve D has only one bearing-face, instead of moving between two bearing-plates, the valve being maintained in position by the pressure of gas in the chamber 13. When the valve 1) has been moved to the position Fig. 11 the air and gas pass from the cylinder'Ainto the chamber B, which, on the rising of the valve D to the position shown in Fig. 12, can pass out through the outlet-port I) and pipe B to the interior of the expansion-cylinder C.

1n the tube B is the device F for igniting the explosive mixture of air and gas; The preturned on its pivot by the arm S, connected to cise construction of this igniting device may be Varied. In Fig. 13, for instance, I have shown a U-shaped pipe, g, the bend of which is heated red-hot by a gas-jet, 9, within the tube. In Fig. 14 I have shown a straight pipe, g, heated by a gas-jet, g, and having a small tube, 71, passing through it, while in Fig. 15 I have shown an igniter like that shown in Fig. 14, except that a diaphragm, i, is substituted for the tube h.

any convenient manner.

The inlet-pipe M, Fig. 2, for the supply of gas, is provided with two valves, both controlled by a centrifugal governoron the shaft v K-one valve, n, for regulating the supply of gas, and the other, q, for cutting off the gas entirely. The "alve n is a disk-valve, Figs. 16 and 17, carried by a rotary shaft, m, mounted in hearings in the frame, and carrying at its opposite end a horizontal arm, Z, with a counter-weight, which causes the vertical arm lon the said shaft to press on the end of the movable rod or axis K in the direction of the arrow, Fig. 2, against the centrifugal action of the governor-balls K, when the shaft is driven from some moving part of the engine, as will be readily understood. Hence when there is too great an increase in the speed the governor-rod K will turn the shaft m against the action of the counter-weight, and tend to close the disk-valve n. This disk is not set up close to its seat, however, so that a little gas will pass through at all times, sufficient to make the mixture inflammable, no matter what may be the position of the valve n.

To insure the automatic cut-0E of the entire supply of gas, I employ a second valve, g, which is controlled by the connecting'rod r, bell-crank lever p rod 19, and rock-shaft carrying the arm 1). the governor-rod K, Fig. 2, so that when the engine is moving at too high a speed the said cam 0 will comeinto contact with an arm, p, and through the rods and levers described close the valve q, while when the engine has slowed down again the cam 0 will move back, and, actin g on a second arm on the rock-shaft carrying the arm 19, open the valve q again.

In order to prevent the too great coolin g of the igniting-pipe F when the gas-supply is cut off and the engine is running with air only, I

. provide the pipe F with a shield, 8, (shown in difl'erent forms in Figs. 13 and 14,) which is A cam, 0, is arranged on the rod 1'', Fig. 2, to protect the hottest part of the pipe F from the cold air. Theair and gas entering through the separate portsare more or less mixed in passing through the valve D and passage 0 and cylinder A; but to insure their more thorough mixture I arrange in the chamber B a bent perforated plate, G, which is adjustable horizontally by suitable means (not shown) to vary the spacet between the plate G and the valve D, and that a between ber'B, Figs. 1 and 2. The perforations may also be provided with devices for closing them.

In orderto keep the compression-cylinder and mixing-chamhercool, I arrange a waterjacket around both and a water-space between the two, as shown in Fig. 1, and in the seat for the slide-valve D, I arrange two water-ports, y, Fig. 8, which communicate with grooves 00 in the face of the slide-valve, Fig. 10, and a water-space, '0, Fig. 9, in the body of the valve, so as to allow of a circulation of water through the latter to keep it cool at all times, in no matter what position the valve may be.

When the engine is in operation it will be seen that the two pistons A and 0 both move in the same direction at the same time, and I when the two pistons are rising the valve D is in such a position, Fig. 12, as to allow the mixture of air and gas to be drawn into the cylinder. The slide then begins to descend just before the piston A, so as to close the port 0, Fig. 9, and allow the piston A to compress the air and gas, which, on the further descent of the slide D to open the port 0, Fig. 11, pass into the chamber B, and thence on the next rising movement of the valve D, Fig. 12, and of the piston C, the gaseous mixture is drawn into the cylinder 0, being ignited by the redhot pipe 9 on its passage through the tube B. The valve E is opened just before the piston 0 begins its descent, so as to allow of the escape of the products of combustion.

I claim as my invention- 1. A gas-engine having a compression-cylinder, an expansion-cylinder, an intermediate mixing-chamber, and a pipe forming acommunication between themixing-chamber and expansion-cylinder, and provided with an igniting device, all substantially as set forth.

2. In a gas-engine, the combination of ajacketed compression-cylinder and a mixing-chamber with an intervening water-space between the two.

3. The combination of the expansion-cylinder and the mixing-chamber of a gas-engine with a tube or conduit, B, forming the communication between the two, and a pipe or pipes, g, heated internally within said tube B, substantially as described.

4. A gas-engine having a mixing-chamber containing a perforated distributing-plate, Gr.

5. The combination of the gas-supply pipe of a gas-engine with two valves, n and q, both the edge of the plate and the wall of the chamcontrolled bya governor-one to regulate the communicating at all times with the space in o supply of gas and the othei to cut it off.

6. The combination of agas-engiue with an igniting device consisting of a pipe or pipes heated internally, with an adjustable shield, 8, controlled by the valve-gear, substantially as and for the purpose set forth.

7. The combination of a slide-Valve having a watenspace, 2:,with a valve-seat having spaces the valve, substantially as specified.

In testimony whereof I have signed my name to this specification in the presence 'of two suhscribing witnesses.

' KARL TEIGEIMANN.

Witnesses E. KRUG, Professor. 0. SCHMIDT, Professor.

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