US172309A - Improvement in electro-magnetic motors - Google Patents

Description

J. H. GUEST.

ELECTRO MAGNETIC-MOTORS. No. 172,309. Patented Jan.1e`.1a7e.

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NITED STATES PATENT OFFICE.

JOENEENEY GUEST, oE BaooKLYN, NEw YORK.

IMPROVEMENT IN ELECTROfMAGNETIC MOTORS.

Specification forming part of Letters Patent N o. 172,309, dated January '18, 1876; Vapplication filed l August 10, 1875. v

To all whom it may concern Be it known that I, JOHN H. GUEST, of Brooklyn, in the county of Kings -and State of New York, have invented an Improvement in Electro-Magnetic Motors, of which the following. is a specification:

This invention is vfor concentrating the effective magnetism, and rendering the motor very compact and efficient.

The magnet is composed of a central core, around which is a helix, so that the current polarizes the same. Outside this helix is a cylinder and a second helix, and then a second cylinder and a third helix, and so on, whereby all the cylinders become polarized. These cylinders and core are all in metallic contact with soft or cast iron heads that become polarized by induction, and these heads have parallel poles, approaching toward each other and surrounding the helices, and these poles are rendered powerfully magnetic by induction, and this device becomes 4a cylinder of highly-magnetic 4poles in a very compact form. Outside this cylinder of poles there is a cylindrical cage of armatures corresponding in number with or a multiple of the poles, and either the cylinder of poles revolves with its core within the stationary circular cage of armatures, or else the armatures revolve about the cylinder of poles, the latter being stationary, and in either case thereis a circuit-breaker that interrupts the flow of the current through the helices as the armatures leave the poles, and pass to the sphere ofthe attraction ofthe next poles, when the current is again closed. The power is taken from the portion that revolves by a pulley and belt or otherwise.

In the drawing a motor is shown with a stationary magnet. Figure lis alongitudinal section. Fig. 2 is a cross-section. Fig. Sis an elevation of the circuit-breaker, and Fig. 4 is a cross-section of a modification of the electromagnet.

Vcorrugated or fluted, and if iuted, as shown in Fig. 4, the helices should be separately der before placing over them the next and correspondingly-luted outer cylinder.

In all cases the heads f and g are upon the core a, and the inner faces are in metallic con tact with the respective ends of the cylinders, and the helices are wound or connected so as to be continuous, and hence the current will pass through all the helices, and powerfully magnetize both the core and cylinders, and, by induction, the heads f and g, and the inwardly-projecting polesh and k, will be powerfully magnctized, one north, the other south. These poles are parallel, or nearly so, to each other, and cast with or attached to the heads f g, and they extend toward each other, but there is a suflcient space between them to prevent contact, and they are preferably numerous and made with narrow edges,

as shown. Around the magnet is a cylinder or cage of armatures,0 o, connected with heads r'. If this cage is stationary the magnet will revolve, and vice versa. I have shown the cage as revolving, and provided with a cordpulley, s, by which the power is transferred,

through a belt, to the article to be revolved The poles f g and armatures o being V-shaped sectionally, as shown, the narrow edges coming toward each other increase the efficiency of the motor.

There is a circuit-breaker, t, placed in the circuit to the battery, and it is provided with as many non-conducting sections as there are pairs of armatures, so that the circuit will be interrupted as the armatures arrive over the respective poles, and the circuit is not closed until the momentum has carried the armatures more than halt' the distance to the next poles.

It is preferable to place the circuit-breaker upon one of the heads 1", and to havetwo contact-wheels, c o, as in Fig. 3. These close the circuit simultaneously, and lessen the risk of imperfect contact. These contactwheels U should be insulated and connected to one pole of the battery by the wire 2. l The other pole of the battery is to be connected to the cage of armatures surrounding such magnet,

and a circuit-breaker7 substantially as set forth.

3. An electro-magnetic motor made by combining a circular range of V-shaped poles with a cylindrical cage of Vshaped armatures, substantially as specified.

Signed by me this 6th day of August, A. D. 1875.

J. H. GUEST.

Witnesses:

GEO. T. P1NGKNEY5 GHAs. H. SMITH.

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