US411150A - Executrix of abraham s - Google Patents

Description

(No Model.

A. S. KISSELL, Deod.

M. A. KISSELL, Executrix. BLEGTROMOTOR.

No. 411,150. Patented Sept. 17, 1889.

Wifhwaea, m fi/dwz/ W? M W UNITED STATES PATENT OFFICE.

MARY A. KISSEIIL, OF CHICAGO, ILLINOIS, EXECUTRIX OF ABRAHAM S. KIS- SELL, DECEASED.

ELECTROMOTOR.

SPECIFICATION forming part of Letters Patent No. 411,150, dated September 17, 1889. Application filed April 1, 1889. Serial No. 305,617- (No model.)

To aZZ whom it may concern:

Be it known that ABRAHAM S. KIssELL, late of Chicago, Illinois, and a citizen of the United States, now deceased, did during his life-time make certain new and useful Improvements in Electromotors, of which the following is a specification.

The invention relates to that class of electromotors which are designed for use where IO only a small amount of mechanical work is to be performed, and is particularly adapted for the operation of heat-controlling devices.

The invention consists, chiefly, in novel means for forming and breaking the electrical circuits in which the motor is joined,so as to obtain intermittent motion therefrom. In its adaptation to the regulation of heatsupplying devices it may be used in connection with a thermostat, whereby the elec- 2o trical circuits are automatically made and broken according to variations of tempera- .ture, and this adaptation is chosen for the purpose of describing the invention.

In the accompanying drawings, Figure l is a 2 5 plan view of the motor, thermostat, battery, and electrical connections; and Fig. 2 is a side elevation, the wiring being merely indi cated.

In the drawings, A is the base of the machine, upon which are mounted vertical plates B B, which constitute the poles of the fieldmagnet, the location of which is indicated by the screws 1) Z).

O is a revolving armature of the Siemens type, having three coils.

D is the commutator, and (Z (Z the brushes thereof.

The shaft of the armature has a threaded extension D, meshing with a worm-wheel E,

0 secured upon a rotatable stud or spindle F, mounted in a bearing formed by a'bracket F, extended from the end plate of the pole-pieces B B. Mounted upon the upper surface of the worm-wheel is a disk G, of insulating ma- 5 terial, upon the periphery of which is secured an annular cam-plate H, whose upper surface is divided into two segments of one hundred and eighty degrees each, with a uniform in cline and abrupt end walls. It will be ob- 5o served that the insulating material projects above the lower end. of the inclines, so that only about one-half of the upper edge of the latter is made effective, as hereinafter described. Suitably secured upon a supportingplate I are contacts J K L, the contact K having a bent end, which is maintained continually in contact with the outer face of the cam-plate II. The binding-screw of said contact K will be connected by wire 7.; to the brush 41, and a wire M leads from the brush d to the battery. The contacts J and L are connected by the wires j Z to the respective hot and cold sides of thermostat T, or other contact-making device, which is also joined in circuit with the battery Y. Said contacts are made of spring metal, and their inner ends ride upon the upper edge of the camplate inclines. The thermostat, as usual with such devices, will have a pivoted needle vibrating between two contacts, and when brought to touch either the one or the other a current is established through the motor, and by means of the worm-gear rotates the spindle,which may be connected, for example, with a damper adapted to be actuated thereby. This rotary movement continues so long as the contact which is in the electrical circuit is in engagement with the metal of cam H; but when the worm-wheel has turned until said contact drops off at the end So of the incline upon the insulated disk G the circuit is broken, the motor stops, and the movement of the damper or other actuated mechanism ceases. The same working cycle is performed upon the resumption of the eircuit by the operation of the thermostat, and thus intermittent movement is imparted to any device with which the spindle is connected.

It will be observed that by means of the cam-plate and its described contacts the circuit is mechanically broken at each quarterrevolution of the cam-plate, and so, if the device be used with a thermostat, it is not important that the needle of the latter shall be released from contact immediately. By means of this automatic cut-out device the battery-power will only be expended in the accomplishment of useful work, and a small battery may be employed.

It may be found expedient to dispense with the battery, the electro-motive force being threaded end, an annular plate mounted on said wheel, but insulated therefrom, a contact joined in the motor-circuit and adapted to bear constantly on said plate, the latter having an interrupted portion to provide cams, and a contact joined also in the motoreircuit and adapted to engage said cams intermittently to make and break the motorcircuit, substantially as described.

MARY A. KISSELL, Executrioc of Abraham S. Kvlssell.

Witnesses:

T. D. BUT ER, FREDERICK O. GOODWIN.

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