US794826A - Sparking igniter-gear for explosive-engines. - Google Patents

Description

No. 794,826. PATENTED JULY 18, 1905.

E( WESTMAN.

SPARKING IGNITER GEAR POR EXPLOSIVE ENGINES.

AFPLIOATION FILED APB..18,1904.

3 SHEETS-SHEET 1.

No. 794,826. lMATENTED JULY 18,1905 E. WESTMAN.

SPARKING IGNITER GEAR. FOR EXPLOSIVB ENGqINllS.

yAPPLIATION FILED APB.18,1904. i

3 SHEETS-SHEET 2.

5.. 0 9 l om 1 V.. L U Td. D E T N E ml. A D..

N. A M T .S E W nn.. n0. 2 om, 4 9 7 0. N

SPARKING IGNITER GEAR'EOR EXPLOSIVE ENGINES.

APPLICATION FILED ABR. 18,1904.

v3 SHEETS-SHEET 3,

UNITED STATES Patented July 18, 1905.

PATENT OEETCE. s

EMIL WESTMAN, 4OE MINNEAPOLIS, MINNESOTA, ASSIGNOR TO THE ENTERPRISE MACHINE COMPANY, OF MINNEAPOLIS, MINNESOTA,

A OOPARTNERSHIP.

SPARKING lGNlTER-GEAR FOR EXPLOSlVE-ENGlNES.

SPECIFICATION forming part of Letters Patent No. 794,826, dated July 18, 1905.

Application iiled April 18. 1904. Serial No. 203,578.

To all whom, it may 0071.067171,.-

' Beit known that I, EMIL WEsTMAN, a citizen of the United States,-residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new andusefulImprovements in Sparking Igniter-Gear for Explosive-Engines; and I do hereby declare the following to be a full, clear, and exact description of' the invention, such as Will enable others skilled in the art towhich it appertains to make and use the same.

My invention relates to explosive-engines, and has for its object to provide certain improvements in the igniting-gear with a view of securing increased eiciency; and to this end my invention consists of the novel devices and combinations of devices hereinafter described, and defined in the claims.

The invention is illustrated in the accompanying drawings, wherein- Figure 1 is a View in end elevation with some parts broken away and others removed, showing my invention as applied to a double or two cylinder engine of the four-cycle type. Fig. 2 is a view of the same parts shown in Fig. 1 in side elevation, some parts being broken away and others removed. Fig. 3 is a detail in end elevation similar to Fig. 1, but with the parts shown in a dierent position. Fig. 4 is an enlarged detail of some of the parts shown in Fig. 3, and Fig. 5 is a detail showing the upper end of the trip-rod with the tripping-nose removed therefrom.

The engine being of the well-known fourcycle type, it will not be necessary to give a detail description thereof', but will be suiificient to note the parts to which my improvements are applied.

The numeral 1 represents the main enginecasting; 2, the crank-shaft; 3, the gear thereon in mesh with the larger gear 4 on the counter-shaft 5 for communicating motion to said shaft at the ratio ofone to two from the engine-shaft. The said counter-shaft 5 is provided with cams 6, operative on the outer ends of the spring-seated exhaust-valve rods 7 for positively opening the exhaustvalves in the usual way. The shaft 5 is also provided with crank-disks 8, to the pins of which the lower ends of the trip-rods 9 are pivotally attached in the usual manner. The said triprods 9 are provided at their upper ends with tripping-noses 10 for action on the springheld movable arm 11 of' the movable electrodes. Said trip-rod 9 is provided with. a swivel-bolt 12, to the head of which is fixed a short guide-rod 13, working in guide-keepers 14, formed on or fixed to the engine-casting 1. The tripping nose-piece 10 is pivoted to the upper end of the trip-rod 9 by a nutted stud-bolt 15, working through an elongated slot 16, formed in the upper end portion of the trip-rod, as best shown in Figs. 4 and 5. The head portion of the trip-rod is also re.- cessed, as shown at 17 in Fig. 5, and the nosepiece 10 is provided with a stop-lug 18 working in the said recess to limit the pivotal motion of the nose-piece on the trip-rod. A spring 19 is fixed to the trip-rod and bears at its free end against the back of the pivoted tripping-nose a'nd tends to hold the nose in its forward or most projecting position toward the movable electrode-arm 11. F rom this construction it will be seen that the tripping-nose 10 is adjustable lengthwise of the tripping-rod and is at all times free for pivotal motion thereon against the tension of its holding-spring 19. A link 20, attached to the pivot-bolt 15 of the nose-piece 10, connects the same with the upper arm of a bellcrank 21, which is pivoted on the swivel-bolt 12. The lower arm of the bell-crank 21 is connected by a link 22 to the lower end of a hand-lever 23,' fixed to a rock-shaft 24, which is mounted in suitable bearings 25, fixed to the engine-casting. The hand-lever 23 moves over a suitable friction-lock segment 26 and is provided with a stiff springclip 27, cooperating therewith to hold the hand-lever and the parts connected therewith in any desired set position. The rockshaft 24 is of sufiicient length to extend across in front of all the igniting devices of the several engines and is provided with a crankarm 28 corresponding to the lower end or arm of' the hand-lever 23, and each connected by l ulation and setting of the hand-lever 23.

a corresponding link 22 with the lower arm of the corresponding bell-crank lever 21, which forms a part of the toggle-lever connection to the tripping-nose l0. With this construction it is obvious that the tripping-nose 10 may be moved lengthwise of the rod 9 and be heldin any desired adjustment by the proper manipt is equally obvious 4that all the tripping-noses on the several different trip-rods for the several dierent engines may be manipulated and properly set by the single hand-lever 23, rock-shaft 24, and th'e connections therefrom. In whatever position the tripping-nose 10 may be set in its longitudinal adjustment on the trip-rod 9 it will always be free for its limited pivotal motion against the tension of its retracting spring 19 for the proper cooperation with the spring-held movable electrod e-arm 1l of the electrodes. Hence it follows that by the manipulation of the hand-le ver 23 the tripping-noses 10 in the actuatinggears for all the igniters may be properly set to var v the timing of ignition, as required to make the necessary changes in the time thereof for starting and when running at full speed and for regulating the speed of the engine. In practice I built double-cylinder units and attach as many thereof to a common engineshaft as may be required for the power desired. The cranks for each double-cylinder unit are located o-ne hundred and eighty degrees apart. The cams 6 for operating the exhaust-valves and the crank-disks 8 for operating the igniter-gears must of course be properly positioned or set in respect to the cranks and each other for the respective required actions therefrom.

By actual usage I have demonstrated the efhciency of the devices herein disclosed and claimed for the purposes had in view. I have shown my invention as applied to an electric igniter; but it will of course be understood that in the broad point of view the same might be applied as part of the operating-gear for any other suitable form of igniter.

It will further be understood that the details of the construction might be modified and varied to a considerable extent without departing from the principle of the invention.

What I claim,'and desire to secure by Letters Patent of the United States, is as follows:

l. In an explosive-engine, the combination with a pair of electrodes, one of which is movable, of means for operating said movable elec-v trode, comprising a reciprocating rod, a longitudinally-adjustable tripping-nose on said rod, a set-lever adj ustably mounted on a fixed support, and connections between said lever and said tripping-nose, permitting the free movements of said rod, and serving to transmit longitudinal adjustments to said nose while the engine is in action, and without changing the movement of said rod, substantially as described.

2. In an explosive-engine, the combination with a fixed and a movable electrode, of means for operating said movable electrode comprising a reciprocating trip-rod, having an adj ustable tripping-nose, a toggle-lever carried by said trip-rod and connected to said trippingnose, a hand-lever adjustable on a fixed support, and a connection between said hand-lever and said toggle lever, substantially as described.

3. The combination with a plurality of eX- plosive-engines,having fixed and movable electrodes, of means for operating said movable electrodes consisting of trip-rods, having adjustable tripping-noses, toggle-levers connecting all of said tripping-noses to a common rockshaft, and a hand-lever on said rock-shaft movable over a lock-segment, for setting all of said tripping-noses in any desired adjustment on their respective tripping-rods, substantially as and for the purposes set forth.

In testimony whereof I aiiix my signature in presence of two witnesses.

EMIL WESTMAN.

Witnesses:

JAS. F. WILLIAMSON, F. I). MERCHANT.

Images