US1117616A - Magneto-machine. - Google Patents

Description

L. A. WILLIAMS.

MAGNETO MACHINE.

APPLICATION FILED 110v. 17,1913,

Patented Nov. 17, 1914.

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' spark-producing current.

. springs to cause theflow of create a spark to ignite the 1n1t1al or start- UNITE @TATTES PATENT OFFICE.

LY NN A. WILLIAMS, 0F EVANSTON, ILLINOIS.

MAGNETO-MACHINE.

To all whom it may concern:

Be it known that I, LYNN A. WILLIAMS, a citizen of the United States, residing at Evanston, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Magneto-Machines, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, formin a part of this specification.

My invention relates to magneto machines, and particularly to that class of magneto machines employed in connection with ma ke-and-break ignition devices to produce the ignition sparks or arcs necessary for internal combustion engine operation. The magneto is preferably of that type comprising a solid metal rotor movable in one direction by an engine-driven actuating device, and returned quickly to normal position by springs when released from said actuator to cause a rapid change in the magnetic flux through the energizing windings of the magneto machine to cause the flow of the While the exact details of the magneto machine per 86 are not particularly important, in so far as the present invention is concerned, it is essential that the movable element thereof be operable by an engine-driven actuator-and provided with meansfor quickly returning it to normal position by spring action, as set forth.

One of the objects of the present invention is to provide a lever whereby the movable element of the rotor of the magneto by one stroke of the lever may be manually moved from normal position, released and then quickly returned to normal position by the current and so in .',charge within. the cylinder of the interna combustion engine with which the magneto is associated in order that the engine ma be started without cranking. The mahe-and-break ignition devices are, of

course, operated simultaneously with the operation ofthe magneto machine to permit the passing of the spark at the proper time. The manually-operated lever just referred to is conformed and proportioned to secure the maximum mechanical advantage and is adapted to be used as a gage for adjusting the magneto and so that the same may be operated at the necessary time during the enginecycle. These and other features of my invention are fully set forth 1n the fol- Specification of Letters Patent.

Application filed November 17, 1913.

be unnecessary be operated by Patented Nov. 17, 1914. Serial No. 801,374.

lowing description and are illustrated in the accompanying drawings, in which Figure 1 is a front view of the mechanism of my invention; Fig. 2 is a rear view there of, certain parts being illustrated in section;

Fig. '3 is a detail view illustrating the position of the hand-operated starting lever immediately before the rotor of the magneto machine is released therefrom, and Fig. 4 is a detail view showing the hand-operated starting lever used as a gage.

Similar reference numerals refer to similar parts throughout the several views.

Referring to the drawings, I have shown the framework of the magneto machine at 5, send magneto being provided with the field magnets 6 mounted in the framework 5. The said field magnets are provided with suitable pole-pieces (not shown)? located in the framework 5, and movable between said pole-pieces is a rotor (not shown), said rotor being rigidly attached to a shaft 7. The rotor referred to. is preferably in the form of a solid metal inductor adapted when operated to cause a rapid change in the magnetic flux passing through generating windings mounted upon the polepieces. These last-mentioned features of magneto machine construction are now well known to those skilled in the art, so it will for me to go into any elaborate description of the same at this time.

Keyed or otherwise rigidly seonrpdupon the shaft 7 is a yoke 8, said yoke being bent and pins 10 mounted in brackets supported by the framework of the machine are the ,1

helical springs 11 which normally retain the yoke 8 in the position shown in Fig. l ofthe drawings. Mounted upon the pins 10 and the portions 9 of the yoke are suitable rollers 12 engagedby the ends of the helical springs 11.

Rigi'dly mounted upon the rear end of the shaft 7 is an operating arm 13 arranged to an engine-driven actuating rod 14. It Wlll rod 14 passes over a roller 15 and that therefore the position of the roller 15 will determine at what point in the engine cycle the arm 13 will be released from the enginedriven actuating 'rod 14.

:The magneto machine may, if desired, be

ulounted upon a bracket 16 arranged to be be seenthat the actuating well known to those skilled in the art. It

secured to the side of an engine cylinder. The present invention is not particularly concerned with the details of the bracket 16,

so the same is merely shown partially in section and partially in elevation in F 2 of the drawings.

At 17 in Fig. 2 I have illustrated in section a shaft upon which in practice is rigidly ,mounted the movable contact of -a make-and-break ignition device. I have not thought it necessary to illustrate the make and-break contacts because these devices are will suffice to say that turning the shaft 17 etfects the closing or separation of said contacts. is an arm 18, and acting between said arm and the bracket 16 is a helical spring 19 which normally-tends to move the arm 18 and shaft 17 in a clockwise direction (Fig. 2). Threaded into the lower end of the arm 18 is a screw 20 which normally abuts against an arm 21 formed integral with the arm 13 mounted upon theshaft 7.

Mounted upon the right hand one of the pins 10 (Fig. 1) is a manually-operated lever 22 rounded to a point at 23. It will be seen that the lever 22 is provided with. two apertures illustrated at24: and 25, the pin 10 being disposed in the aperture 24: when the lever 22 is used as a starting lever and the said pin 10 being disposed in the aperture 25 when'the lever is utilized as a'gage.

Assuming the piston within the engine cylinder with which the magneto machine just described is associated to be in proper position and the cylinder to contain a suitable combustible charge; the lever 22 is in the position shown in full lines in Fig. l of the drawings and the makeand-break contacts within'the engine cylinder are closed. The long arm of the lever is then depressed,

moving the yoke 8 to the position shown in single thrust, as the portion 9 of the yoke engaged by the lever will slip off the pointed end of the lever when the lever has reached a certain position. As, soon as the yoke is released from the lever, the helical springs 11 serve to quickly return the yoke and rotor to normal position, thus causing a rapid change in the magnetic flux through the energizing windings of the magneto machine and causing the flow of ignition .current.

Referring to Fig. 2 of the drawings, it will be seen that when the lever 22 is operated to move the yoke to the position shown in Fig. 3, the arm 21 rigidly mounted on the shaft 7 will be moved in a clockwise direction' (Fig. 2), and out of engagement with the screw 20 carried by the arm 18, the spring 19 tending to hold the movable contact mounted on the shaft 17 in engagement with its associated stationary c ontact.

Rigidly mounted upon the shaft 17 When the yoke is released from the lever the springs 11 not only carry the yoke and parts fixed relatively thereto to normal position, but carry them past normal position, whereupon the arm 21 acts as a hammer to engage the screw 20 serving as an anvil to move the arm 18 in contra-clockwise direction (Fig. 2), against the tension of the spring 19 to separate the contacts within the engine cylinder and so cause the passing of a spark to ignite -the combustible charge within the engine cylinder.

The engine, having started as a result of the explosion of the charge caused by operating the lever 22, the magneto machine is now operated at the proper-time in the en gine cycle by means of the engine-driven actuating rod 14:, which once in every engine cycle moves the arm 13 and parts fixed relative thereto in a clockwise direction (Fig. 2), the said arm 13 being released from said actuating rod at the proper time and returned quickly to a normal position by the helical springs 11. The sparking contacts are, of course, operated when the magneto machine is being driven from the engine in identically the same manner that they are operated when the magneto is operated by the starting lever 22. When the lever 22 is not in use it may be removed from position upon the pin 10 which supports it, or it may be permitted to assume the position illustrated in dotted lines in Fig.

The roller 15 which causes the enginedriven actuating rod 14 to be disengaged from the arm 13 at'the proper time is mounted on a spindle 26 fixed to a disk 27, and also fixed to said disk is a shaft or spindle 28 mounted in a block 29 supported by the bracket 16. The shaft 26 is disposed eccentric to the shaft 28 so that by adjusting the handle 80 mounted upon the spindle 28, the time in the engine cycle at which the arm 13 is released from'the engine actuating rod 14 may be determined. Thus the passing of the spark in the engine cylinder may be advanced or retarded within certain limits. The handle 30 is provided with a flat spriigg 31 arranged to engage in suitable notches in a sector 32 formed integral with theblock 29.

It will be seen that the block 29 is secured to the bracket 16 by means of screws or bolts 33 passing through an elongated slot 34 in said block. The time in the engine cycle at which, the spark passes is primarily determined by positioning the block 29 relative to the machine framework. The spark is advanced or retarded within certain limits by manipulating the handle 30. W hen it is desirable to adjust the position of the block 3 29 with respect to the other parts of the magneto machine, the lever 22 is utilized as. a gage, the pin 10 at the right hand side of the machine (Fig.1) being disposed in the aperture 25 of the lever. The pointed end ed at 23 that when the said lever is used as a starting lever one stroke of said. lever is r of the lever is then depressed to move the yoke 8 to the position shown in Fig. 4, and this position is the one at which it is desirable to release the rotor from its actuating member during the operation of the magneto machine, regardless of whether said 0 erating lever is the lever 22 or the engineriven actuating rod 14. It will be seen that the yoke is securely locked in the position shown in Fig. i when. the lever 22 is utilized as a gage, and the position of the block 29 may be readily adjusted in order that the engine driven actuating rod 14: may be released from the arm 13 at exactly the proper time in the engine cycle.

It will be seen that the lever 22 is so roundsuliicient to operate and release the yoke and that the operation of the said yoke 1s accomplished by means of a minimum amount of effort. 'The gage end of the lever serves as a handle when the'lever 22 is utilized for operating the magneto machine to roduce the starting spark. It will be un erstood that the lever 22 is utilized as a gage very (rarely and thatwhen'the lever is utilized as a gage and the yoke is locked in the position shown in Fig. 4 it is necessary to withdraw the lever 22 from the pin 10 upon which it is mounted to release the yoke.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent ofthe United States is:

1. In combination, a magneto machine com prising a framework and a rotor,"an enginedriven' actuator formoving the rotor in one directionand automatically releasable from said rotor, springs for quickly moving the rotor in the opposite direction when released a from said actuator, a manually operated lever adapted on one stroke thereof to move the rotor in the direc tionin which said rotor is moved by the engine-driven actuator and to release the rotor, and a pin fixed relatively to said rotor, said hand-operated lever comprisingan operating arm adapted to engage said pin, said-lever arm being rounded to a prising a framework and a rotor, an enginedriven actuator for moving the same in one direction and automatically releasable from said rotor mechanism for quickly moving the rotor in the opposite direction when released from said actuator, and a manuallyoperated lever adapted on one stroke thereof to move the rotor in the direction in which it is moved by the engine'driven actuator and to release said rotor, said rotor comprising an operating arm, and said lever comprising a portion adapted to engage said operating arm, the operating arm engaging portion of said lever being rounded to a point and said lever being pivoted to a stationary part of the machine framework.

3. In combination, a magneto machine comprising a framework and a rotor, an engineclriven actuator .for moving the rotor in one direction and automatically releasable from said rotor, a yoke fixed relatively to said rotor, springs attached to said yoke adapted to quickly move the rotor td normal position when the rotor isreleased from said actuator, and a manually-operated lever adapted on one stroke thereof to move the rotor in the direction in which it is moved by the engine-driven actuator and to release the rotor, said lever comprising a portion adapted to engage said yoke, said portion being rounded to a point and said lever being ivoted to a stationary part of the mac line framework. I

In witness whereof, I hereuntojsubscribe my name this 12th day of November, A. D.,

LEONARD E. Boson, AUGUST H. L. Armor.

Copies of this patent may be obtained for five cent: each, by addressing the Commissioner of Patents,

Washington, D. 0.

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