US739199A - Electrical sparking igniter. - Google Patents

Description

No. 799,199. PATENTED SEPT. 15, 1903. 0.'W. MILLER.

ELECTRICAL SPARKING IGNITER.

APPLIOATION FILED JAN. 21, 1903.

30 MODEL. 3 SHEETS-SHEET 1 Shunt yfi f 99,

No. 739,199. PATENTED SEPT. 15, 1903 c. w. MILLER. ELECTRICAL SPA'RKING IGNITER.

APPLICATION FILED JAN. 21, 1903. no MODEL. a SHEETS-SHEET 2.

PATENTED SEPT. 15,, 1903.

c. w. MILLER. ELEGTRIGAL SPARKING IGNITER.

APPLIOATION FILED JAN. 21, 1903.

no MODEL,

3 SHEETS-SHEET 3.

UNITED STATES Fatented September 15, 1905.

PATENT OFFICE.

CAREY W. MILLER, OF ALBION, MICHIGAN, ASSIGNOR TO WM. D. BRUNDAGE AND E. O. LESTER, OF ALBION, MICHIGAN, COPARTNERS.

ELECTRICAL SPARKlNG IGNITER.

SPECIFICATION forming part of Letters Patent No. 739,199, dated September 15, 1903.

Application filed January 21, 1908. Serial No. 140,009. (No model.)

4 city of Albion, in the county of Calhoun and State of Michigan, have invented certain new and useful Improvements in Electrical Sparking Igniters, of which the following is a speci-.

- fication.

This invention relates to improvements in gasolene electrical sparking igniters. It re lates particularly to the sparking device for an engine and the method of controlling the same whereby an engine can be readily started without causing it to perform a full revolution and whereby the time of the sparking with relation to the movements of the piston is readily controlled to regulate the engine for fast or slow speed, it being well understood that when a gasolene-engine is running at a high rate of speed it must ignite earlier in the stroke to secure the best results than when it is running at a low rate of speed.

Objects relating to the details of construction will readily appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification.

The invention is clearly defined and pointed out in the claims.

nying drawings, forming a part of this specification, in which Figure 1 is a front elevation view of a horizontal gas or gasolene engine to ,which my improved sparking meansis applied. Fig. 2 is a detail plan View of the structure appearing in Fig. 1. Fig. 3 is a horizontal sectional view through the cylinder-head,taken on a line corresponding to line 3 3 of Figs. 1 and 4. Fig. 4 is an end elevation view of the cylinder-head, the relation of the interior parts which appear in Fig. 3 being indicated by dotted lines.

In the drawings the sectional views are taken looking in the direction of the little arrows at the ends of the section-lines, and similar letters of reference refer to similar parts throughout the several views.

Referring to the lettered parts of the drawing, A is the base, which carries the remaining parts of the engine.

' B is the cylinder, and B the cylinder-head. On the cylinder-head are carried a stationary electrode 0 and a movable electrode 0'. To the movable electrode 0 is secured a lever O for actuating the same. The lever O is actuated by means of a plunger-rod D, which has a spring connection therewith. The plunger-rod D extends into contact with the cam I on the cam-shaft K of the engine and is actuated thereby to properly release the plunger and permit the spring to break the 7 connection between the electrodes 0 O. A lever II is provided with a forked upper extremity in which the plunger D rests for adjusting the end of the plunger-rod D up and down, whereby it will be released at different intervals, this enabling the regulation of the sparking, by the mere manipulation of this lever, to time the same properly for a high or low rate of speed. On the plunger-rod D is a notch d, and a pawlE is provided which engages this notch cl, thus holding the electrodes O G into close contact. This pawl E extends out over the cam-shaft K, but is offset longitudinally of the shaft, so that it does not contact with the cam I, but extends across the shaft to one side of the same. A second cam F is provided on the shaft K, which is slightly in the rear of the cam I in the direction of its rotation and is positioned to strike the pawl E when the balance-wheel of the engine is swung backward in advance of the sparking cams actuation of the sparking device, so that the sparking device will be operated, in the first instance, by this cam F releasing the sparking device independent of the regular sparking cam.

In starting the engine the plunger-rod D is 0 pushed over to one side to such an extent that the pawl E engages the notch d therein. A charge of gasolene or other explosive mixture is then introduced into the cylinder, the same being ready for ignition, that being accom- 5 plished by putting a small quantity of gasolene into the charging-cup L or in any other suitable way. The engine is then swung backward until the cam F strikes the pawl E, lifting the same out of the notch d on the plunger-rod roe D. This permits the rod to strike back, causing the electrodes to separate and the charge to be ignited. This gives the engine its first impulse,and thereafter the ignition is secured by the end of the plunger-rod D passing off from the cam I. As the cam I never carries the rod D back far enough for the pawl E to engage with the notch (I, the same does not engage the notch and is out of operation after the initial spark. By rocking the lever II the timing of the sparking is very exactly regulated, as will be seen from an inspection of Fig. 1.

The usual governor is provided for controlling the engine; but as my invention does not pertain particularly to the governor mechanism I have not lettered or described the same in my drawings.

I desire to remark that the structure I have illustrated as embodying my invention can be greatly varied in its details without departing from my invention,although I believe the exact form in which I have illustrated the same is .very ciiective and is worthy of specific claims.

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

1. In an electrical sparking igniter,the combination with a suitable engine-cylinder of the head with electrodes thereon, one of which is movable; a plunger-rod connected to the movable electrode with a suitable spring attached thereto for breaking the connection; a camshaft with a cam for acting upon the end of the plunger-rod positioned to release it at the proper time for generating the spark; a lever suitably connected to the plunger-rod for adjusting it laterally in relation to the cam for varying the time of the spark; a pawl E adapted to engage a notch (Z on the plunger-rod and hold the same out of engagement with the sparking cam; a second cam on the said camshaft, positioned to the rear of the sparking cam, and positioned to contact with the said pawl E. to release the same on the backward throw of the engine, whereby in starting the engine, it will be necessary only to move it backward to secure slight compression, when the sparking device will be released and brought into action, all coacting substantially as described and for the purpose specified.

2. In an electrical sparking igniter,the combination with a suitable engine-cylinder of the head with electrodes thereon, one of which is movable; a plunger-rod connected to the movable electrode with a suitable spring attached thereto for breaking the connection; a camshaft with a cam for acting upon the end of the plunger-rod positioned to release it at the proper time for generating the spark; a pawl E adapted to engage a notch d on the plungerrod and hold the same out of engagement with the sparking cam; a second cam on the said cam-shaft, positioned to the rear of the sparking cam, and positioned to contact with the said pawl E to release the same on the backward throw of the engine, whereby, in starting the engine, it will be necessary only to move it backward to secure slight compression, when the sparking device will be released'and brought into action, all coacting substantially as described and for the purpose specified.

3. In an electrical sparking igniter,the combination of an engine-cylinder; a pair of electrodes within the cylinder, one of which is movable; a spring connection for separating the electrodes to break the circuit and induce a spark; a plunger-rod connected to the said movable electrode; a suitable cam for actuating the same; a pawl to engage the plungerrod and hold the same out of contact with the sparking cam; a second cam to contact with the pawl and disengage the plunger-rod on a backward throw of the engine to release the same, thereby igniting the engine and permitting the sparking device to come into operation, as specified.

4:. In an electrical sparking igniter,the com bination of an engine -cylinder; electrodes within the same, one of which is movable; a cam-shaft; a connection from the said movable electrode to a cam on the said cam-shaft; a catch for holding the electrodes in contact with each other and disengaged from the sparking cam; and a second cam on the camshaft timed slightly in the rear of the sparking cam to release the catch, whereby the engine can be started on a partial compression, and the sparking device be thrown automatically into operation, for the purpose specified.

5. In an electrical sparki11gignite1.',tl1e combination of an engine cylinder; electrodes within the same, one of which is movable; a cam-shaft; a connection from the said movable electrode to a cam on the said cam-shaft; a catch for holding the electrodes in contact with each other and disengaged from the sparking cam; and a trip on the cam-shaft, timed slightly after the sparking cam to release the catch, whereby the engine can be started on a partial compression, and the sparking device be thrown automatically into operation, for the purpose specified.

6. In an electrical sparking igniter,the combination of an engine cylinder; electrodes within the same, one of which is movable; a cam-shaft; a connection from the said movable electrode to a cam on the said cam-shaft; a catch for holding the electrodes in contact with each other and disengaged from the sparking cam; and an adjustable trip means, timed slightly after the sparking cam to release the catch, whereby the engine can be started on a partial compression, and the sparking device be thrown automatically into operation, for the purpose specified.

7 In an electrical sparking i gniter,the com bination of the enginecylinder; electrodes within the cylinder; means for delivering current therethrough controlled by movable parts of the engine; a catch to support the same in an inoperative position; and a trip carried by a movable part of the engine timed after the sparking means, whereby the engine can be Started on a partial compression and the sparking device be thrown automatically into operation, for the purpose specified.

8. In an electrical sparking igniter, the combination of the engine cylinder; electrodes within the cylinder means for controlling the current therethrough controlled by the movable parts of the engine; a catch to support the controlling means in an inoperative position; a trip carried by a movable part of the engine, positioned to strike the catch and re- CAREY w. MILLER. [n s.]

Witnesses:

EARLE KNIGHT, O. J. DOWLING.

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