US569385A - Magneto-electric generator - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1. G. H. NORTH.

MAGNETO ELECTRIC GENERATOR.

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2 Sheets-Sheet 2.

(No Model.)

0. H. NORTH. MAGNETO BLEOTRIG GENERATOR.

No. 569,385. Patented Oct. 18, 1896.

UNITED STATES PATENT GEEIcE.

CHARLES H. NORTH, OF CLEVELAND, OHIO.

MAG NETO-ELECTRIC GENERATOR.

SPECIFICATION forming part of Letters Patent No. 569,385, dated October 13, 1896.

Application filed April 1 1 96- To aZZ whom it may concern.-

Be it known that I, CHARLES H. NORTH, a citizen of the United States, residing at Cleveland, in the county of Ouyahoga and State of Ohio, have invented certain new and useful Improvements in Magneto-Electric Generators, of which the following is a specification.

This invention relates to magneto-electric generators, and has for its object economy of construction and greater efficiency of electrical generation; and it consists in the details of construction and combinations of parts substantially as hereinafter described, and pointed out in the claims.

I11 the accompanying drawings, Figure 1, Sheet 1, is an end view of my new generator. Fig. 2 is a vertical section on line 2 2 on Fig. 1. Fig. 3 is a detached view of one of the end plates which support the working parts. Fig. 4 is a detached view of one of the poleplates. Fig. 5 is a detached view of the armature. Fig. 6 is a detached view of one of the pieces composing the laminated armature. Fig. 7, Sheet 2, is a side elevation of thegenerator as seen contained in a box in connection with a call-ringer, showing the method of making wire connections.

In this generator two courses for the electric current are provided, and a switch mechanism operated by the laterally-reciprocatin g movements of the driving-shaft is used for changing the current from one course to the other. Thus when the driving-shaft is in the normal position the current is from bindingpost P, through the center spring S of the switch, thence back through spring S, thence to the ringer, thence to binding-post N, leaving the generator open, but when the said driving-shaft is pushed outward from gearwheel by the revolutions of the shaft the current will be from the binding-post P, through the center spring S, thence through spring S thence through the armature and by the frame to return-wire direct to binding-post N, leaving the ringer-circuit open, so that in calling a distant phone the local ringer will not sound. If it is desired that both the local and distant bells should ring simultaneously, it is only necessary to cut the local ringer into the main circuit between bindingpost Pand the center spring S.

A A are the end plates comprised in the Serial No. 587,560. (No model.)

framework supporting the working mechanism. These plates are stamped out of sheet metal, preferably of brass or other non-magnetic metal, with dies, and are therefore uniform in size and shape. The lower half of the side edges of said plates are made curved, and at the lower corners are made ears or lugs a a, and at the upper ends of said curved edges .are provided similar projections a Said ears and projections are perforated for the purpose of receiving the binding-rods a which join said end plates. In the top ends of said plates are made holes for the bearings of the driving-shaft D, and at the center of the arc of said curved side edges are made holes for the bearings of the armature-shaft.

B B are pole-plates, also stamped out of sheet metal and pressed into form by dies. They have curved sides conforming with the curved sides of the end plates A, which curvature is parallel with and but slightly greater than the circumference of the armature. At the lower sides of the plates B are bent flanges b, which extend at right angles, and at the upper side of the curvature is made a short inward curve 19 above which the plates eX- tend in a perpendicular line and are pierced with holes 12 The ends ofthe curved portions of the plates B have short extensions 5 adapted to fit onto the curved sides of the plates A between the cars a and the projections a Now when the plates A A and B B are placed together, the rods a are put through the eyes, and the nuts are screwed onto the ends of the rods the frame is complete.

C G O are permanent magnets placed over the pole-plates B B, with their ends standing on the flanges b b, and are secured in place by the screws 0 0, passed between the magnets and screwed into the holes I). Thus the magnets, the pole-plates, and the frame are firmly bound together.

E is a laminated armature composed of a shaft 6, two end pieces 6, and the intermediate thin pieces 6 The end pieces are stamped out of sheet-iron and formed with broad curved ends, which are bent at right angles to the middle cross part, as shown in Fig. 3, to form hoods, the side edges of which are on a line with the side points of the laminm. These hoods form a perfect continuation of the side edges of the armature, completely covering the ends of the coils and perfecting the magnetic lines through the armature. The thin pieces are also stamped out of thin sheet-iron, with a center hole, like the two end pieces c, and are placed on the shaft 6 between the end pieces, and all are secured thereon by the brass sleeves c, which occupy the spaces on the shaft between the end pieces and the end plates A.

In one end of the armature-shaft is provided a contact-pin :r, insulated from the shaft, and having its inner end connected with the wirecoil on the armature, (seen at .115 The other end of the coil is connected with the shaft by pin a. This leads the generated current through the frame to the wire at to.

D is a driving-shaft having its bearings in the holes in the upper ends of the end plates A A over the armature.

G- is a gear-wheel placed loosely on the shaft D and meshing with a pinion I on the end of the armature-shaft. In the outer end of the hub of wheel G is made an inclined recess 9, and through the shaft I) is put apin g, the ends of which bear against the inclines in said recess.

II is a sleeve placed on the shaft D, held by a set-scrcw 71 II is a spring placed on the shaft between said sleeve and the end plate A, and is designed for assisting the spring S in forcing the shaft inwardly. The spring S may, however, be made strong enough to withdraw the shaft. In such case the spring K may be dispensed with.

The switch consists of three spring-pieces S S S fixed on an insulating-piece T on the end plate A. The spring S has a ring through which an insulated head D on shaft D is passed, the flange of the head bearing against said ring. The lower end of said spring S is connected by wire with binding-post l. The lower end of spring S is in contact with the contact-pin {U in the armature-shift, the upper end contacting with spring S when the shaft 1) is pushed outward by the pin g moving on the inclines in recess 9 when the shaft is rotated.

Having described my invention, I claim 1. In aniagneto-electrie generator, the combination with the rotary armature IE and vibratory shaft l),of the springs EihSQSanounh ed on the end plate A, spring 5" contacting with pin X in the arinainire-shaft, spring S connected in the main circuit, spring 5 interposed between said springs t5, t5 and connected in the main circuit, also connected with the end of the vibratory shaft I), and adapted thereby for changing the electric current between said springs S, S as and for the purpose set forth.

Inainagneto-electric generator,thc combination with the rotary armature E, of the cylinder composed of the stan'iped pole-pieces I B, having the end projections b b, the stamped plates A A, comprising heads for the cylinder, and having the perforated lugs a a and curved edges between said lugs, adapted to receive the said. projections b, and. the tie-rods a which enter said lugs, and bind the pole-pieces to the end plates, substantially as described.

(JIIARL' 5S II. NORTH.

\Vitnesses:

GEO. XV. TIBBITTS, LEWIS W. FORD.

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