US912565A - Dynamo-electric generator. - Google Patents

Description

J. 0. HEINZE, IR. 1 DYNAMO ELEGTRIG GENERATOR.

APPLICATION FILED NOV. 11', 1907.

Patented Feb. 16, 1909.

'JonN o'r'ro HEINZE, 1a., or LOWELL, m'ssaonusnr'rs nYNmo-nrncrmc ennnnaroa.

Specification of Letters Patent.

Patented Feb. 16, 1909.

Application filed November 11, 1907. Serial No. 401,559.

To all whom it may concern:

Be it known thatI, JOHN O'r'ro HEINZE, J r.,

a citizen of the United States, residing at Lowell, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Dynamo-Electric Generators, of which the following is a "s ecification, reference being had therein to e accompanyingzdrawing.

My invention relates to dynamo electric generators, havingpermanent magnets.

The object of my invention is to provide means whereby, should one of the several magnets become demagnetized, .the flow of magnetism from the other magnet or magnets would not only be prevented from passing through the deenergized magnetwhich thus becomes a keeper or magnetic circuit closer for the magnetic circuits through the other magnet or magnets-but said flow would always pass to and through the armature, and not through the deenergizedmagnet. Hence should one of, say, eight ma nets of the magneto, become denergizeu, then there would be lost the ma netism of only one of the eight magnets. y the old form of construction, there would be lost not onl the generating power of one out of the eig t m. nets, but said demagnetized magnet Wonk? form a short circuiting bar for the other seven magnets, and would partially.

shunt the magnetic circuit from passing through the armature, and would reduce the strength of the magnets, for example, to one half or less.

Now I attain the object of my invention by providing the magneto with a series of independent complete magnetic circuits; each of which has its own independent magnet, yoke, and armature, and is rendered independent of the other, by building up the armature, as

well as the yokeof the magnets, with as many iron sections insulated from each other, as there are magnets.

The drawing shows a diagrammatic view of a generator embodying my invention, namely, a plurality of magneticallyinsulated, and hence independent, magnetic circuits; and a wiring plan commonly employed for distributing secondary currents to the ignition ap )aratus of an explosive engine, and with w ich my invention may be used to great advantage,

The drawing illustrates the principle of my invention, and the best mode I know of embodying that principle.

material, as sheet brass 10, 11, 12,

in a quick understanding of that principle. A plurality of permanent steel magnet-s, as 1, 2, 3, is rovided, and they are connected to gether y a yoke built up of-a corresponding pluralit of iron sections, 4, 5, 6, 7, 8, 9

which, owever, are magnetically insulated from each other by suitable non magnetic 13. An armature is likewise built up of a plurality of iron sections 14, 15, 16, also magneticallyv separated and insulated by such sheet brass 17, 18L This armature has the usual winding '21, which may form part of a rimary wind- 32 of an induction coil. T e armature is A reference to the drawing will greatly aid mounted upon its shaft 23, which may be the main shaft of an explosive engine.

An inspection of the drawing shows that each magnet as 1, is independent of themagnetic influences oflevery other magnet, as 2 or 3, because its insulated yoke section 4,-its insulated armature seetien14, and yoke system 7, and no othershave complete control over 'its magnetic field. The field of one magnet, as 1, may be of one strength; that of another, 2, or 3, of a different strength;

. and yet as these magnetic circuits are magnetically insulated, by insulations 10, 1'7, 12, and 11, 18, 13, the weaker magnet, as 1,.cannot serve as a circuit closer to the stronger, as 2, or 3, and, in course of time, be overpowered, become de-magnetized, and serve as a shunt circuit, about the armature,and

thus greatly to reduce the strength of the remaining magnetic current or currents ing through the armature. I

' My magneto may housed in many difierent environments, but it was designed especially for use in connection with explosive engines, and, as already stated, it is shown in the drawing as used in connection with apparatus for distributing the secondary. or

igh tension current to 'four sparking devices, successively' One end of the winding 21 of the armature is grounded, as to the armature, and its other end portion emerges, although not shown, from the center 2% of the armature shaft'2 3, from which the wire is insulated. A-spring 30 contacts the exposed end of the wire, and is connected to one end 31 of the primary wire 32 of an induction or spark coil 33; the other end 34 of said primary wire being connected to an insulated contact 35, forming the anvil of a mechanical interrupter 36. On the armature shaft 23, shown pass- I below the armature between the poles 'oithe "magnets, and disconnected, for the sake of 'clearness, IS a cam 37 WlllCll upon each half revolut'nn of the shaft, operates a lever 38 to move a spring hammer 39 of the interrupter,

out of contact with its anvil, for the purpose ofbreaking the circuit in the primary wire; said Wire being grounded, as to the yokeof the magneto. It is understood, of course, that the primary circuit is interrupted when the current is at its maximum intensity. One end of the secondary Wire 40 is grounded, as to the yoke, and itsotlier end is connected to 'a distributing arm l1 which is on a distributing arm shaft 42, and which .is moved into successlve contact with terminals 43, 44, 45,

46, leading to spark plugs 47, 48, 49, 50.

The apparatusshownis supposed to be that used withv a four cylinder engine, and

tWo sparks are made during each revolution of the main' shaft. Accordingly the distributing shaft and the main shaft are provided'with two gears 51, 52, the nuinber'of teeth of" which are in theratio of? to 1,,so that the distributing shaft 42 and hence the arm 41, will rotate once for each two revoluticns of the main or armature-shaft. 23. Having shown and explained the principle of my invention, and also the environment in which it maybe used to advantage; and desiring to protect my invention in the broadest manner legally possible,

Whatl claim is 1. A series of permanent field magnets to,

erases sections rotatable in their respective fields;

each magnet and its iron armature section, being magnetically independent of its adjacent magnet and associated armature section, and lying in a plane parallel with that of its adjacent magnet and associated armature" section.

2. A series of permanent magnets which are not in magnetic contact with each other; a rotatable armature made up of a corre' sponding number or non armature sections 1 mounted upon, and having a common axis witli, an armature shaft; and not 111 magnetic contact with each other all the north poles and all the south poles, of said magnets, being. in parallel alinement' with said gether with corresponding iron armature axis; all designed to prevent magnetic-short circuits from one magnet to the other.

3. A series of permanent magnets 'separated from each other by brass plates; a corresponding series of iron armature 'SBCiZlODS separated from each other by brass plates,

and mounted upon, and having a common 1 Jenn o'rro nnn zn, J3.

Witnesses;

Arron-I. CRAWFORD, ELrzAnnrn F. UNiAo.

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