US730056A - Sparking igniter for explosive-engines. - Google Patents

Description

c. A. STIGKNEY.

SPARKINGIGNITER 'FQR EXPLOSIVE ENGINES.

I APPLICATION FILED APR. 11, 1900.

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No. 730,056. PATENTEDJUNE 2,1903.

' 0, A. STIGKNEY.-

. SPARKING IGNITER FOR EXPLOSIVE ENGINES.

APPLICATION I ILED APR, 11,.19oo.'

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.SPARKING IGNITER FOR EXPLOSIVE ENGINES.

APPLIOAT ION FILED APR. 11, 1900.

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UNITED STATES 7 Patented June 2, 1903.

PATENT OFFICE.

S'P AR KlNG IGNITER FOR E'XPLOSIVE-ENGINES.

SPECIFICATION, forming part of Letters Application filed April 11,1906.

T aZZ whmn-it may concern:

Be it known that 1, (Julianne A. STICKNEY; a citizen of the United States, residing at St." Paul, in the countyof Ramsey and State of, Minnesota, have invented certain new and useful Improvements in Sparking Igniters for; Explosive-Engines, of which the following is a specification.

This invention relates to that class of vertical four-cycle petroleum-engines in which. every second downward stroke of the piston is elfected by the explosion of a charge of mixed air and gas. I

My invention consists of a sparking device recessed into the side of the cylinder having a spring for holding the device normally open and one for closing it and a trip carried by the exhaust valve-rod of the engine which sweeps the sparking device, so as to operate the spring, and thereby open and close an electric circuit in the cylinder. As compared with petroleum-engines now in use I secure simplicity and positive action.

In the accompanying drawings, forming part of this specification, Figure 1 is a side elevation of my improved engine, showing one of the balance-wheels removed. Fig. 2 is a detail sectional view of Fig. 1, taken on the line X X. Fig. 8 is a front view of the igniter. Fig; 4 is a section taken on the line X X of Fig. 3. Fig. 5 is another section taken on the line X X showing the movable terminal'arm and plunger removed. Fig. 6 is a rear view of the igniter. Fig. 7'is a 1ongitudinal section of the tripfor the iguiter fastened to the connecting-rod as shown ,in Fig. 2. Fig. 8 is a detail view of myinven tion, showing the tripping device in engagement with the sparking device during the for-} ward revolution of the engine. Fig. 9 "is a View showing the tripping device returning, and Fig. 10 is another view showinghthe trip, depressed against the plunger when the engine is reversed.

' In the drawings -let Arepresent the usual supporting-frame for theworking parts of the engine; B, the balance-wheel, rigidly seated on the shaft 0, from which the power is communicated to the machine to be operated either by means of a belt, pulley, or gears. (Not shown.) I

D is the power-piston, attached at its outer hinder by bolts 3. ;the frame and carries on its inner end the crank-arm 5, which is provided at its head 6 .nal of the electric circuit.

Patent No. 730,056, dated. June 2, 1903.

SerialNo. 1 2,418. (No model.)

end in the. usual way to the shaft 0 and having its action in the cylinder E.

F is the exhaust-valve, which is positioned at the upper end G of the cylinder. Gas and air are admitted into the cylinder by means -of a mixing or transition chamber.

(Not shown.)

H is the igniter, located in the recess J in the side of the cylinder. The igniter consists of the frame 2, which is fastened to the cyl- A shaft 4 extends through with a platinum washer, which is one termi- The other end of this shaft: carries the'lever 7, to which the spring 8 is attached for the purpose of holding .the lever normally'as shown in Fig. 3. The

bolt 9 passes through the frame, from which it is electrically insulated at 10, as shown in Fig. 5. Its inner end is formed with the head 11, to which the platinum washer 12 is attached. This washer forms the other terminal. The electric circuit is shown diagrammatic- -al1y.in Fig. 1 and consists of the battery I and induction-coil 13, from which the connections 14 are made with the terminal, as described. The normal position of the sparking device is maintained by the plunger 15 in the socket 16 of the frame. This plunger is provided with head 17, which impinges against the lever 7 .and by means of the expansion-spring 18 holds the terminals open. The tension of the spring 18 is greater than that of spring 8. The plunger may be adjusted, by turning the nut 19, so as to regulate the igniter. The ig- ;niter may be closed and the engine stopped by drawing the handle 20 out.

A connecting-rod 21 is carried by the eccentric-collar 22, which is journaled in eccentric 23. The eccentric is journaled and op- .erated on shaft" 0 .and carried by gear 27,

which in turn is driven by gears.24,.25, and 26, which respectively-mesh. The gear 2 1 is keyed to shaft 0. The eccentric thus makes one revolution for two of the shaft; The rod 21 carries the trip 28, which is fastened by pin 29. The trip has the tripping-pin 30, the head 31 of which is adapted to sweep the head 17 of the igniter, causing the terminals 6 and 12 to meet and complete the circuit and then break, so as to spark and ignite the mixture in the cylinder of the engine. The trip is adjusted by nuts 32 and is provided with the spring 33 in the socket 34: of its frame 35, by which spring the pin is adapted to be depressed should the engine be turned backward. The upper end of the connecting-rod is connected by pin 36 and arm 37 to the rock-shaft 38. This shaft is journaled in the upper end of the cylinder and carries the relief-arm 39, which is adapted to open and close the valve F. It is the laterally-inclined motion of the arm that causes the trip to operate the igniter.

In operation the balance-wheel revolves in the direction of the arrowsshown in Fig. 1. The connectingrod is propelled by the eucentric, so as to open and close the exhaustvalve, and carries the trip. The head 31 sweeps the plungers 15, so as to release the lever 7 and cause the shaft l to turn. The terminal on the arm 5 is thus caused to contact with the stationary terminal 12 and close the circuit. When the head 31 passes from the plunger 15, the working parts of the sparking device return to normal position and break the circuit, thus causing a spark between the terminals. If the balance-wheel is reversed in direction, the trip-head 31 is depressed, so as to prevent breaking of the parts.

Having described my invention, what I claim as new, and desire to protect by Letters Patent, is

1. Asparking igniterforexplosiveengines, consisting in combination of a cylinder, having a recess in one of its walls, a rock-shaft extending into said recess carrying a terminal arm, a fixed insulated terminal bolt extending into said recess, a spring for closing said terminals, an auxiliary spring-plunger impinging against a lever carried by the rockshaft to hold the terminals normally apart, an eccentric upon the engine-shaft, an exhaust-valve in the cylinder, a rod connecting the valve and eccentric for operating the valve, and a spring-trip carried by said rod, adapted to depress the spring-plunger as it is revolved forward by the rod and to spring from engagement with the plunger when reversed.

2. Asparking igniter for explosive-engines, consistin gin combination of an exhaust valverod and cylinder-chamber, a plug extending into the side of said cylinder, a spring-controlled rock shaft extending through said plug and carrying a terminal arm, an 'insulated terminal bolt passing through said plug, a lever carried upon the outer end of said rock-shaft, a spring-controlled plunger bearrod and to spring from engagement with said plunger when reversed.

3. A sparking igniter for explosive-engines,

consisting in combination with a cylinder E having an opening in one of its walls, of a plug 2 in said opening having its inner end recessed in the side of said cylinder, a rockshaft 4 through said plug, a terminal arm 5 on the inner end of said shaft, an insulated terminal bolt 9 passing through said plug, a lever 7 on the outer end of said shaft, a spring attached to said lever for closing said terminals, an adjustable spring plunger 15 by which the normal position of the terminals is maintained, a valve-rod 21, and a springtrip pin 30 carried by said valve-rod adapted to depress the plunger as it is driven forward by said valve-rod and to sweep over said plunger when reversed.

4:. Asparking igniterforexplosive-engines, consisting of a plug, recessed into the side of the cylinder and carrying a fixed, insulated terminal and a movable terminal, with which terminals the electric circuit is connected, a spring for throwing the movable terminal into contact with the fixed terminal, an auxiliary spring for holding the terminals normally apart, and a spring-trip carried by the valverod of the engine, positioned so as to depress the auxiliary spring and close the circuit when revolving forward, and to sweep over the auxiliary spring when reversed.

5. Asparking igniterfor explosive-engines, consisting of a plug, recessed in the side of the cylinder and carrying a fixed and a movable terminal insulated from each other and with which terminals the electric circuit is connected, a spring for throwing said movable terminal into contact with said fixed terminal, an auxiliary spring for holding said terminals normally apart, and a trip carried by the valve-rod of the engine, positioned so as to depress said auxiliary spring and close the circuit each stroke of the rod; said trip consisting of a pin and a spring socketed in a frame, whereby the pin is adapted to be depressed when the engine is reversed.

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

- CHARLES A. STICKNEY.

Witnesses:

C. O. JONES, F. G. BRADBURY.

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