US311141A - Regulator for dynamo-electric machines - Google Patents

Description

(No Model.)

B. F. ORlON.

REGULATOR FOR DYNAMO ELECTRIC MACHINES. No. 311,141. Pate/ted Jan. 20,1885.

UNITED STATES PATENT @Erica BENJAMIN F. ORTON, OF EAST SAGINAV, MICHIGAN.

REGULATOR FOR DYNAlVlO-ELECTRlC MACHINES.

SPECIFICATION forming part of Letters Patent. No. SlLMt-l, dated January 20.1885.

A pplcaiicn filed February T, 1884.

.To @ZZ whom it may concern:

Be it known that I, BENJAMIN F. OirroN, a

citizen of the United Statis, anda resident of East Saginaw, in the county of Saginaw and State of Michigan, have invented certain new and useful Improvementsin Regulator s for Dynamo-Electric Machines, of which the following is a specification.

' My invention relates to means for regulating or governing the current supplied by a dynamo-electric machine either by hand or automatically in accordance with changes in the condition or vresistance of the external or Working circuit to which the machine furnishes current.

In carrying out my invention I malte use of the well-kno`wn expedient of varying or ad justing the strength of the magnetic field in which the armature of the machine moves, and this I effectby certain novel and simplified combinations and arrangements of circuits and switch devices', whereby the number ol" exciting-coils on the field-magnet and the consequent strength ofthe magnetic field may be determined or adjusted according to the necessities ofthe case.

y invention consists in the novel combinations and arrangements hereinafter described and claimed, whereby the number of coils on the two or more legs or cores cfa held-magnet having a number of cores or legs may be simultaneously varied, so as not to disturb the symmetry of the magnetic held, while at the same time the strength of the field is varied.

Myinvention consists, also, in certain details of construction that will be specified more particularly in the claims, after being first described in connection with the accompanying drawings, forming a part of this specification.

Figure lis a side elevation ot' a common form of field-magnet having my invention applied to it. struction, and shows the manner of adjusting or operating the switch that serves to determine the number of exciting-coils in action automatically.

A AIZ A3 AL indicate the four legs or portions of a field-efforce magnet, and N S the consequent pole-pieces forming the magnetic eld for an armature.

B B indicate ordinary cross-pieces or yokes, to which the cores or" the magnet are bolted Fig. 2 illustrates a detail of conl (No mcdcl) after the application of the exciting-coils of wire to said cores. rlhe coils on each leg are divided into twelve sections or bobbins, more or less, according to the capacity of the machine and the nicety of the-regulation desired. The sections or bobbins are preferably made separately by winding them on a suitable form of the same shape as the magnet-core, from which form they-are afterward removed and then slipped into place on the core, or they are wound upon a suitably-shaped spool or support that will' fit the core and may be slipped upon the same after the winding is complete. The two ends of each section or bobbin are left free for attachment to binding posts or blocks d, io which latter connections are also made from the switch er circuit controlling` device, that serves io determine the number ol'seciions in circuit. Opposite ends of adjoining bobbins are connected tothe saine post or block-d in such way that, in the absence of other conditions, current may ilow through them all, as ordinarily, in the proper direction to give the desired polarity at the pole-pieces N S. The bobbins or sections in each portion A AJ ACs A' are numbered from l to l2, beginning at the outer ends.

B indicates a block or support, preferably of insulating material, iixed in any suitable position, and carrying four seis of contact` pieces insulated from one another to correspond with the vfour sets of coils on A A2 A"A. The contact-pieces, twelve in number, corre spending to the coil-sections on A, and to which said coil-sections are connected by the wires b, leading to the binding-posts d, are indicated by a, and the contact-pieces, to which the bobbins in A` A A'L are respectively connected, by a2 c:E c".

Mounted on a suitable shaft are four contact-making arms or pieces, b I)2 bJ b", adapted to sweep over and make electrical connection with the sets of contact-plates a c2 a c, and arranged symmetrically with relation to the sets of contacts so as to simultaneously rest upon contact-plates connected to bobbins that are at the same distance from the ends of the several legs A Az Az A'1 and are correspondingly numbered. rEhe arms b b2 are electrically eonneeted with one another, but are insulated by any suitable means from the arms if b", which latter are also electrically connected with one another. The contact ends ICO or portions of the arms are of such form or l of the lever F, and the link G to the long arm width as to make contact with one block before breaking contact with a preceding block. The binding-posts d are preferably double connectors-that is, have two binding-screws and oriees for the insertion of the connecting wires, one orifice and screw serving for the attachment ofadjoining terminals ot' adjoining bobbins, and the other for the attachment of the Wires leading to the insulated contactplates on the support B2. The binding-posts d are mounted on bars or supports M of insulating material, bolted or otherwise secured to the endpieces,B,and extending in line with the series of bobbins on each leg ot' the tieldmagnet. Thcterminals of the field-magnet cir` cuit are indicated by the signs and and the circuit through the coils passes first tothe bobbins on A,to and through that particular one whose end nearest the pole-piece is in connection through a block, (d, with the arm b, then through arni b2 and the bobbiiis on A2, which lie between that one ot' them whose contact-blocklies under the arm band the terminal bobbin l, connected through wire g with the set of coils on A3 5 then through said set of coils, arms b3 b, and coils on A" in a similar manner to the negative terminal indicated by the sign lf the contact-arms b Zr D b" be turned by the insulated knob on b`,or by other suitable means, so that the arms make contact with the first one of each series of blocks, a c2 a3 i4-viz., that one connected to the terminal of bobbin numbered l2 on the several legs A A2 A3 A-it is obvious that all the coils of the field-magnet will be in circuit. It' it be desired to reduce the tieldvmagnetism, the arms are turned in the direction ot' the arrow, thus disconnecting the bobbins on the several. legs A AL A3 A4, one after the other, beginning with those nearest the center on every leg, so as not to disturb the symmetry of the tield. In the posit-ion of the parts shown the three sections on each leg nearest the center are disconnected, but current flows through the remaining sections ou each leg in the manner already described. It' any section ofthe coil becomes injured,it may be replaced by simply disconnecting the bobbin terminals from the binding-posts and slipping the bohbins off from the core.

In Fig. 2 means for governing the strength of the tield automatically are shown.

H indicates an electro-magnet in the main or principal circuit of 'the machine, as illustrated diagramniatically; and D, a crank at.- tached to the shaft or spindle carrying the contact-arms. The movable core or armature ot' the magnet is connected with the crank through a lilik, G, and a lever, F, or other suitable means, so that when the strength ot the magnet increases the core will be drawn up and will turn the spindle orshatt carrying the contact-arms, so as to throw out coil sections on the four legs and reduce the strength of thefield-magnet. Themotionis multiplied by connecting the core of H to the short arm thereof. Other mechanical devices might be used for the same purpose. The weight of the core and attached parts or a suitable retractor acts to throw the contact-arms back, and place more coils in circuit when the strength of the current in H diminishes.

Other forms oi' binding-posts besides those shown might be placed upon the arms or bars M, and the invention may obviously be applied to other forms of field-magnets.

Vhat I claim as my invention is*- 1. The combination, in a dynamo electric machine, ol" two sets of ieldmagnet coils or sections on separate legs or coresof the field` magnet Ifor said machine, two contact-arms electrically connected and forming the con iiection between the two sets ot' coils, two corresponding sets ot' contacts connected with the coil-sections, all arranged as set t'orth, so that coils will be simultaneously thrown out ot' circuit on both cores, and a magnet energizcd by the current ofthe machine, and having a movable core connected with the shaft supporting the arms, as and for the puipose described.

2. The combination, with base piece orsupport B2, ot' the t'our series of eoncentric`contacts, the four contactarms electrically connected in pairs, and connections from said contacts to coil-sections on the field -magnet legs, each pair ot' said contact-ari'ns serving ,as the electrical connection whereby current flowing in the coils on one field-magnet leg h'nds circuit te the coils on another field-inag- 1ietleg, as and t'or the purpose described.

3. The combination, in a dynamo-machine regulator, of the block B2, contacts a a2 c c", arranged concentrically, two double circuitclosers each adapted to `coin plete the circuit between two sets ot' contacts, and the coils connected with said contacts but insulated from one another, and sectional field-magnet coils connected with the cont-acts, as and for the purpose described.

4. rlhe combination, with the sectional field magnet coil and a circuit-controller for determining the number of sectionsthat shall be in circuit, of a series ot' binding-posts and a suit.- able support therefor carried by the crosspiece B and ranged parallel with the iieldmagnet.

5. The combination, with thesectional fieldmagnet coil, of the circuit-controller having contactarms mounted on a common shaft, and arranged to move in the arc of a circle over suitable contacts, and a magnet in the main circuit of the machine mechanically connected with said shaft, as and for the purpose described.

Signed at New York, in the county of New York and State of New York, this 28th day of January, A. D. 1884.

BENJAMIN F. ORTON.

Vitiiesses:

Trios. TooMnY, WM. H. BLAiN.

IOO

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