US1556640A - Circuit controlling and interrupting apparatus - Google Patents

Description

Oet. 13, 1925. 1,556,640

C. E. SILVER cincun cQN'rRoLLIuG AND IN'IBRRUPTING APPARATUS Filcd Feb. 21.1921.

atto: cq

Patented Oct. 13, 1925.

UNITED STATES CLARENCE E. SILVER, OF BLACKWELL, OKLAHOMA.

CIRCUIT CONTROLLING AND INTERRUPTING APPARATUS.

Application filed February To all whom t may concern Be it known that I, CLARENCE E. Srnvnn, a citizen of the United States of America, and resident of Blackwell, in the county of Kay and State of Oklahoma, have invented certain new and useful Improvements in Circuit Controlling and Interrupting Apparatus, of which the following is a specification.

This invention relates to circuit controlling and interrupting apparatus for alternately supplying current to a resistance and for heating, the said invention having for its object the provision of novel means for separating terminals or contacts mechanically, means being provided for pulling the contacts together against the action of the mechanically operating separating device.

A further object of this invention is to produce a circuit controlling mechanism preferably for use in heating machines and particularly for use in electrically heated machines, the object of the mechanism being to turn on and to turn olf the electric current automatically for the purpose of conserving the mechanism or heating elements atleast, of such machines. C-ontinuous current in machines of this kind results in a Waste of the current as well as damage to the machine whereas the intermittent current through the electrode proves effective in regulating the degree of heat and in economizing the mechanical parts of the device and prevent burning contents.

An object of this invention is to produce `mechanism associated with the power driven parts of the machine for interrupting or breaking the circuit and for re-establishing the circuit to attain the objects stated WVith the foregoing and other objects in view, the invention consists in the details of construction and in the arrangement and combination of parts to be hereinafter more fully set forth and claimed.

In describing the invention in detail, reference will be had to the accompanying drawings forming part of this application, wherein like characters denote corresponding parts in the several views, and in which- Figure 1 illustrates a view in elevation, partly in section and partly diagrammatic of a controlling mechanism embodying the invention;

Figure 2 illustrates a top plan view thereof;

21, 192.1. serial No. 446,638.

Figure 3 illustrates a detail vieu' of the controlling mechanism; and

Figure 4 illustrates a detail vieuv of the mountingby which the terminal carrying elements are supported.

In carrying the invention into practice, I employ bre strips 5 and G which are reinforced by the metal strips 7 and 8, which metal strips are preferably of steel, nickel plated. The strips 5, 6, 7 and S are bound together and are connected to a bracket by a screw 9, the said bracket being oscillatably mounted on a pivot 10, in order that the plates may be oscillated as will presently F l appear.

The plates 5, G, 7 and S when in assembled position might be termed an arm, in that they, collectively, constitute a support for the metallic housing 11 which is internally threaded to engage the threads of a bolt 12, carrying a contact 13. The liber strips are apertured to receive the housing, and the metal strips oscillate under the influence of a cam 13a mounted on a shaft 15 utilized for dr'ving the mechanism of the heating machine so that as the machine is being operated, the sleeve and contact will be raised and lowered for intermittently estabiishing a circuit through the electrodes of the heating machine.

The housing 11 is provided with a flange 11 that forms an abutment for the loweriuostlibre strip, and the said housing has a nut 16 threaded on it, which engages thc terminal 17 of the conductor 1S, so that the said terminal is bound against the housing 11 which engages bolt 12 and current may reach the contact 13. The nut also presses the terminal 1T against the uppermost fibre strip and thus the parts are held on the said housing. The screw 12 is adjustable in the housing to regulate the. position of the contact 13 with relation to a fixed contact 19, which latter Contact extends through insulations 20 and 21 of the member or bracket and is connected to ay terminal 22 of the conductor 23, the said conductors 18 and 23 being in circuit with a heating electrode 24 which circuit has therein a switch 25.

The spring 14 is shown as having its lower end anchored to the bracket and its upper end connected to the fiber strips 5 and 6, so that the said fiber strips are pulled normally downward against the action of the cam which lifts them, so that as the shaft 15 rotates and the cam is disengaged from the arm, the contacts 13 and 19 will engage and establish a circuit whereas when the cam again strikes the lowermost plate of he arm, it separates the contacts and interni s the circuit. The screw 12 being threa ed to screw in housing 11 makes this deviuendjustable in so far as screwing bolt 12 upward allows the said arm to come nearer to thecenter of shaft 15. In this position cam 23 comes in contact with said arm sooner and stays in contact with said arm longer keeping points 13 and 19 separated longer which in turn keeps the current off longer. As bolt 12 is screwed downward the reverse action takes place kee in the current on longer, as wil be note r; t is has the same effect as turning a gas or oil fire u p or down. The arm has oscillatory movement, as stated by reason of the fact that it is mounted on the pivot at one end and as the said arm oscillates, it carries the housing and the terminal 17.

The construction of the bracket or support for the fixed control or electrode is Well shown in Figure 3 and it will be observed that the device eanbe installed in machines at comparatively low expense owing to the fact that the device contains few parts.

I claim:

1. A device of the class described including fixed and movable transversely disposed electrodes or contacts, insulated meal' for supporting the fixed electrode or contact, an insulating arm or member disposed 101.gitudinally carrying the movable electrode or contact and comprising a pivoted bracket, insulating strips fitted together and secured to the bracket and exterior metallic strips backing the insultating strips and also secured to the said bracket, means for urging the arm or member in one direction and a shaft provided with e cawlated; intermediate ofthe ends of thearm and arranged to engage one of the metallic strips for positivel moving the erm er member in the opposl e directlon. Y'

2. A device of the class described, including a pivoted bracket, an insulating arm or member secured to the bracket and comprisin a pluralit of strips of insulat material and bac 'n stps of metal, an interiorly threaded s ve piercing Ytheinsulatin strips and carried y the said Aarm or mem r, an adjustable screw mounted Yin the threaded sleeve and provided with a contact or electrode, a xe Contact or elef trode arranged tobeen a bythe said contact or electrode, insu ating means for supporting the fired contact or electrode and means for moving the arm or member to carry the movable contact or electrode into and out of en gement with'the fixed con; tact or electrogea.

` 3. A device of the class described inclini a @Porting i and insulating the fixed contact or electrode i and for connecting a conductor therewith and means for operating the pivoted mm to engage the electrodes or contacts with each other and to separate the same.

CLARENCE E. SILVER.

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