US1298534A - Ignition-dynamo. - Google Patents

Description

C. T. MASON.

IGNITION DYNAMO.

APPLICAILON FILED APP..,19.

Patented Mar. 25, 1919'.

2 SHEETST'FSHEET I.

314-021 01; fiar/zsf mason C.T.MASON.I

Patented Mar. 25,1919

2 SHEETS-SHEET 2.

gnvmlfoz Char/c: s T/7as on UNITED STATES PATENT OFFICE.

CHARLES THOMAS MASON, OF SUM'I'ER, SO

UTH CAROLINA, ASSIGNOR TO SPLITDORF ELECTRICAL COMPANY, OF NEWARK, NEW JERSEY, A CORPORATION OF NEW JERSEY.

IGNITION-DYNAMIC.

Specification of Letters Patent.

Patented Mar. 25, 1919.

Application filed April 19, 1916. Serial No. 92,196.

To all whom it may concern:

Be it known that I, CHARLES THOMAS Mason, a citizen of the United States, resid: ing at Sumter, in the county of Sumter and State of South Carolina, have invented certain new and useful Improvements in Igni tion-Dynamos, of which the following is a specification, reference being had to the accompanying drawing.

This invention relates to ignition dynamos commonly termed magnetos, and more specifically to the manner of mounting the generating winding or coil, and to bringing out from said coil the high tension current generated therein so that same may be led to a spark plug.

One of the main objects of my invention is to arrange the high tensionconnection, or terminal, as it is usually termed, so that it may be easily and cheaply manufactured, and so it may be used on either side of the machine.

I also disclose a novel method of mounting the condenser commonly used in magnetos, whereby all wires are eliminated, the condenser being attached directl to the circuit by means of metal terminals orming clamps for mechanically holding said condenser to its supporting frame-work.

There are other objects as will hereinafter ap car.

11 the accompanying drawing, Figure 1 is an end view with part of the side of the magneto broken away to show the arrangement of the high tension terminal and the overlapping side plates whereby the magnets are clamped to the base; Fig. 2 is a side view with one of the cover plates removed; Fig. 3, a sectional view of the high tension terminal; Fig. 4 is a diagram of the electrical circuit and connections. Like figures of reference denote the same parts wherever they are shown.

My invention may be used with various types of magnetos, but for the sake of illusbent around the field magnet or magnets 2 and secured to the base 3 in any suitable manner such as by the screws indicated at 4 and 5. This cover, together with the side plates 6 and 7, completely inclose the magneto with the exception of the usual interrupter mechanism indicated at 29, 29 in the diagram, which is inclosed by the cap 8 held in position by a suitable cover spring 9 supported on the post 10.

The two cover platesare bolted together by through-bolts, indicated at 11 and 12, or 1n any suitable manner, and are secured to the base by screwsvl2 and 12'. These cover plates have fianges as shown partly in sect1on in the upper right hand corner of Fig. 1, adapted to overlap the edges of the magnets, thereby clamping the same to the base.

On the side plate is mounted a metal stamping 13 having the insulating member 14 carrymg the metal piece 15, in one end of which is placed a suitable contact brush adapted to bridge across the pole pieces, one

of which is shown at 23. These pole pieces and the base and rotor housing all form the means for supporting the coil, and may be of any suitable form to accomplish the result of changing the flux flow through core 22 when the shaft of the magneto is revolved or oscillated. The heads of the coil are of insulating material, and upon one of them 21, is carried the terminal 24 to which one end 25 of the primary winding is connected. The other end of the primary winding is grounded on the core 22. I

The primary terminal 24 is connected by means of the clip 26 to a condenser 27, the remaining terminal 28 of which connects to the base 3. These solid metal cli s eliminate the use of wires in this circuit. conductor 29 is also connected to terminal 24 and runs to one of the contact points 29 in the in terrupter.

One end of the secondary Winding is connected to the core, 22 and the remaining end to a terminal piece 30 placed across the heads of the coil and secured in any suitable manner, and it will be seen that spark gaps exist between the points 31 and 32 of said terminal and the upper surface. of the ends of the core 22.

Brush 16 is so positioned as to engage terminal 30 on either end, and therefore the high tension current is conducted out of the machine, as shown in Fig. 1, it being possible to place the terminal on either side of the machine, a great convenience in commercial use.

By removing the bolts 11 and 12 holding the side cover plates in position, it is obvious that the entire high tension terminal may be removed, together with the side plates, thereby permitting easy access to the condenser or coil terminals, and that by arranging the condenser in the manner shown all sliding or flexible contacts in the primary circuit are eliminated, the condenser circuit connecting directly by means of solid metallic clips to the frame of the machine and the primary circuit terminal respectively.

The diagram, Fig. at shows the circuit resulting from the arrangement of parts as just described. The entire absence of all wiring between the various parts will be noted, the only wire being conductor 29 be-- tween primary terminal 24 and one of the interrupter contacts 29.

I locate the condenser so that it forms the circuit connection between the primary winding and the frame of the machine, and it is this location and arrangement in combination with the other parts that constitute one of the features herein claimed by me.

The operation of a magneto of this description being well known, I do not describe the same, nor do I describe the obvious modifications which can be made without departing from the appended claims.

I have employed the term terminal in the foregoing description of my invention to the several elements constituting the high tension connection, and particularly to designate the parts 13, 14, 15, 16 and 17 forming the detachable terminal for the cable 19, and. it will be understood that the word terminal in the appended clain'is is employed to designate, and refers to the group of partsaforesaid, constituting a unit member detachable from the magneto as described.

Having thus described my invention, I claim 1. In an ignition dynamo, a rotor, bearing supports therefor, generating windings, a stationary core therefor, means supporting said core, a magnet extending over and in closing said windings with its ends resting dependently thereof.

2. In an ignition dynamo, a'rotor, bearing supports therefor, generating windings, a stationary core therefor, means supporting said core, a magnet extending over and inclosing said windingswith its ends resting upon said core-supporting means, a cover around said magnet, side plates separate from said bearing supports covering the lateral openings beneath the magnet and in engagement with said cover on its lateral edges, and a ternnnal having a portion adapted to receive a conductor external said cover and side plates removably connected tosaid windings, and supported independently thereof.

3. In an ignition dynamo, a. rotor, a base, an inverted U-shaped field magnet supported on said base, stationary generating windings inclosed by said field magnet and mounted above said rotor, side plates secured to the base and fitting over the edges of the field magnets so as to clamp the same securely to the base and at the same time completely inclose said rotor and generating windings, and a circuit terminal carried by one of said side plates and removably connected to said windings.

4. In an ignition dynamo, a rotor, a base, an inverted U-shaped magnet structure supported thereon to form a bridge, stationary generating windings within and beneath the bridge, and supported above said rotor, side plates secured to said base and extending up into overlapping engagement with the magnet structure so as to clamp the same to the base, and a circuit terminal carried by one of said side plates and removably connected to said generating windings.

In an ignition dynamo, a rotor, a base, an inverted ,U-shaped magnet structure supported thereon to form a bridge, stationary generating windings within and between the bridge and supported above said rotor, non-magnetic metal side plates secured to the base and extending up into overlapping engagement with the upper part of the magnet structure so as to close the open space beneath the bri .lge, and a circuit terminal carried by one of said side plates and re movably connected to said generating Windings.

(3. An ignition dynamo comprising a base, magnets supported thereon, stationary generating windings supported within said magnets, a. pair of flanged cover plates secured. to the base and extending over both sides of the magnets with their flanges overlapping the edges thereof, and a circuit terminal carried by one of said side plates and removably connected to said generating windings.

7. In an ignition dynamo, a base, a magnetic field structure supported on said base, a rotor, stationary windings inclosed within the space above said rotor within said field structure, covers or closures for said space extending across the field structure on each side and secured together, and a terminal carried by one of said covers and removably connected to said stationary windings.

8. In an ignition dynamo, U-shaped field magnets, a stationary generating coil, side plates closing the open U space beneath said fieldmagnets, a circuit terminal carried on one of said side plates and connecting with said generating coil, and a metallic member carried on said coil and forming with the core thereof a spark gap of definite dimension for limiting the operative potential generated in said coil, substantially as described.

9. In an ignition dynamo, a field magnet structure, plates covering the sides thereof so as to inclose a space, a terminal member mounted on one of said plates, a stationary generating coil having a core mounted within said space between the side plates and having a connection to said terminal member and a member forming one element of a safety spark gap carried by said coil, substantially as described.

10. In an ignition dynamo, generating windings, a core supporting said windings, heads on said core, a high tension terminal spanning said heads and secured thereto, means supporting said core, a magnet extending over and inclosing all said parts with its ends resting upon said means, plates clamped to the magnet and covering the lateral opening beneath the same, and a circuit terminal carried by'one of said plates and insulated therefrom and connecting with said high tension terminal.

11. In an ignition dynamo,a generating winding, a high tension terminal on said winding having two contact ends, means supporting said winding, a magnet extending over and inclosing said winding wlth its ends resting upon said means, and a side plate adapted to cover one of the lateral o enings beneath the magnet and having a clrcuit terminal carried thereon adapted to engage said high tension terminal at either end, substantially as described.

12. In an ignition dynamo, a coil-carrying structure, a coil on said structure having insulating heads, a circuit terminal on one of said heads, a connection between said circuit terminal and said coil-carrying structure, said connection comprising a condenser having rigid metallic terminals forming denser having rigid metallic terminals and forming a connection between said circuit terminal and said coil-carrying structure, a high tension terminal carried by said coil and having end portions forming contact surfaces, side plates covering the openings in the closed figure formed by said permanent magnets, and a circuit terminal on one of said plates and engaging the said high tension terminal, substantially as described. 14. In an ignition dynamo, a fixed sup port, a core carried thereon, a stationary generating winding on said core, heads on said winding, and high tension terminal members secured across said heads and supported thereby and forming a limiting spark gap with said core.

15. In an ignition dynamo, a fixed support, a core, a stationary generating winding carried thereby, a high tension terminal on said winding and forming a limiting spark gap with the core thereof, a primary terminal, and a condenser having rigid metal terminals secured directly to said primary terminal and said support, whereby said condenser is mechanically supported as well as electrically connected.

16. In an ignition dynamo, generating windings, a core therefor, heads on said windings, and a conducting member secured to said heads and adapted to be engaged at either end by a circuit terminal, whereby the current generated may be conveyed out of either side of the dynamo.

17. In an ignition dynamo, primary and secondary windings, a core therefor, heads on said windings, a terminal for one end of said secondary winding on both heads, and a circuit terminal mounted exteriorly of said dynamo and adapted to be placed in contact with said first terminal, at either end thereof.

18. In an ignition dynamo, a rotor, U- shaped field magnets, a stationary generating coil, side plates closing the open space beneath said field magnets, a circuit terminal carried on one of said side plates and connecting with said generating coil, and a high potential terminal member carried on said coil and forming with a metallic part of said dynamo a spark gap for limiting the operative potential, substantially as described.

19. In an ignition dynamo, a fixed support, a generating winding carried thereby,

heads on said Winding, and high tension terminal members secured to said heads and forming a limiting spark gap with a part of said dynamo.

20. In an ignition dynamo, a fixed support, a generating Winding carried thereby, a high tension terminal on said Winding adapted to form a limiting spark gap with some metallic portion of the dynamo, a primary terminal on said winding, and a con I0 denser having metal terminals secured directly to said primary. terminal and said support.

In testimony whereof I hereunto affix my signature.

CHARLES THOMAS MASON.

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