US728747A - Electric igniter for hydrocarbon-engines. - Google Patents

Description

PATENTED' MAY 19, 1903.

H. M Mofl ALL. ELECTRIC IGNITER FOR HYDROOARBON ENGINES.

APPLICATION FILED FEB. 27. 1902. I

2 SHEETSSHEET 1.

NO MODEL.

No 728;?47. V

v PATENTED MAY 19', 1903. H. M. MoGALL. ELECTRIC IGNITEB. FOR HYDROGARBON ENGINES.

APPLICATION FILED FEB. 271 1902.

2 SHEETS-SHEET 2.

:60 MODEL.

UNITED STATES HARRY M. MOOALL, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO PITTS Patented May 19, 1903.

PATENT OFFICE.

BURG GAS ENGINE COMPANY, OF PITTSBURG, PENNSYLVANIA.

SPECIFICATION forming part of Letters Patent No. 728,747, dated May 1 9, 1903. Application filed February 27. 1902. semrno. 95,910. (N model.)

To all whom it may concern.-

Be it known that I, HARRY M. MCCALL, a citizen of the United States, residing at'Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a certain new and useful Electric Igniter for Hydrocarbon- Engines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention has relation to electric igniters for hydrocarbon-engines; and it consists in the novel construction and arrangement of its parts, as hereinafter described.

The object of the invention is to provide an electric igniter having contact-points adapted to engage each other and a means for bringing said points together, a means being provided for regulating the force with which the contact-points are brought together, the device being so constructed that the force of the blow of the contact-points may be regulated while the igniter is in operation, thereby enabling the operator to delicately adjust the parts to meet particular requirements.

In the accompanying drawings, Figure l is a side elevation of a hydrocarbon-engine having my electric igniter attached thereto. Fig. 2 is a top plan view of the igniter. Fig. 3 is a horizontal sectional View of the igniter. Fig. 4 is a transverse sectional view of the igniter, showing one position of the parts. Fig. 5 is a view of the inner end of the igniter, showing one position of the parts. Fig. dis a view of the inner end of the igniter, showing the position of the parts when contact between the igniter-points is broken. Fig. 7 is a view of the inner end of the igniter, showing the position of the parts when contact between the igniting-points is about to be broken. Fig. 8 is a view of the inner end of the igniter, showing the position of the parts when contact between the igniting-points is closed. Fig. 9 is a sectional view of the igniter, showing the shaft-hammer in its elevated position; and Fig. 10 is a perspective view of the hammer in my invention, and Fig. 11 is a perspective view of the anvil in my invention.

The igniter consists of the barrel 1, which extends through the side of the combustionchamber of the hydrocarbon -engine. The

'end of the Wire 15.

shaft 2 is journaled in said barrel and is provided at its inner end with a contact-point 3.

The anvil 4 is rigidly fixed to the shaft 2, said anvil having a lip 5. The hammer 6 is provided with bifurcated ends, which pass on either side of the anvil 4:, the said bifurcated ends being loosely journaled on the shaft 2. A coil-spring 7 surrounds the shaft 2 and is secured at one end to the jam-nuts 8, which are fixed to the end of the shaft 2, and at its other end the saidcoil-spring 7 is fixed to the sideof the hammer 6 at the point 9. (See Fig. 2.) The bolt 10 is provided at its inner end with an electric contact-point 11. Said bolt 10 passes through the barrel 1 parallel to the shaft 2. The insulation 12 surrounds said bolt 10. The arm 13 is connected to the outer end of the bolt 10, said arm 13 being provided with a binding-post 14, which receives the The electric contactpoints 3 and 11 are adapted toassume two positions with relation toeach other, one as shown in Fig.' 6 and the other as shown in Fig. 7, while the hammer 6 is adapted to assume three positions, one as shown Fig. 8, when its outer end is elevated and the points above referred to are brought in contact with each other. A second position is as shown in Fig. 7, when the hammer 6 is in a horizontal position and the electric sparking-points are still in contact with each other. A third position is shown in Fig; 6, when the hammer 6 is slightly depressed at its outer ends and the electric sparking-points above referred to are disconnected from each other.

The device is operated by means of the cocentric 16, fixed on a cross-shaft 17, as shown in Fig. 1. The pitman 18ois provided at-its lower end with a vring, which'surrounds the cam 16. The upper end of said pitman passes through the guide 19, the said pitman being provided with a collar 20, which is provided with a sharpened edge adapted to lift the outer end of the hammer 6 as the pitman 18 is elevated and cause said dog to make a partial revolution on the shaft 2, and as the outer end of said dog 6 moves upward the tension of the coil-spring 7 is increased, and when the edge of the collar 20 passes beyond the free end of the hammer 6 the tension'of the said spring 7 causes the free end of said hammer 6 to descend with a snap, the body of the hammer striking the lip of the anvil 4. and causing the shaft 2 to make a partial revolution, which separates the points 3 and 11. Thus contact between the said points is broken and a spark is produced, the current passing from the wire 15 through the post 14:, arm 13, to bolt 10, to point 11, and when in cont-act with point 3 through the last said point to shaft 2, to barrel 1, from which point it is. grounded by any suitable means (not shown in the drawings) and carried back to the point of generation. As the shaft 17 is revolved (see Fig. 1) the pitman 18 is reciprocated substantially perpendicularly and the operation above described is repeated. The eccentric 16 may be so located on the shaft 17 as to cause the contact-points 3 and 11 to come together or separate at any desired time. The spark caused by the separation of the contact-points 3 and 11 ignites the gases in the combustion-chamber and pro: duces the explosion. It will be observed that the contact-points 3 and 11 are in contact only while the free end of the hammer 6 is being elevated. At other times the contactpoints 3 and 11 are separated from each other in a manner as shown in Fig. 6, the stop 21 being so located as to limit there'volution of the shaft 2 as the end ofthe contact-point support 22, which is located at the end of the said shaft 2, comes in contact with the side of said stop.

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

An electric igniting device for hydrocarbon-e'ngi nes consisting of a rocking shaft suitably journaled, a contact-point carried by said shaft, a stationary contact-point located within the path of the first said contact-point,

HARRY IWI. MCOALL.

Witnesses:

DAVID A. Runs, W. H. WILLIAMS.

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