US1330124A - Relay - Google Patents

Description

W. F. KRAUTTER,

LELAY.

APPLICATION FILED MAR. 27, 1919.

1 ,330, 1 24. Patented Feb. 10,1920;

' Wa -M f. M

UNITED STATES PATENT oFFIo -WILLIAM F. KRAUTTER, OF CHICAGO, ILLINOIS, ASSIGNOR TO INTERNATIONAL TIME RECORDING CQMPAN Y 015 NEW YORK, A CORPORATION OF NEW YORK.

RELAY.

Specification of Letters Patent.

Patented Feb. 10, 1920.

Application filed March 27, 1919. Serial No. 285,456. j

To all whom it may concern:

Be it known that I, WILLIAM F. KRAUTTER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Relays, of which the following is a full, clear, and exact description.

In certain electrical systems it is necessary that a series of operating impulses sent through the controlled apparatus through the instrumentality of a relay operated on a line carrying a current of fixed direction or even one the direction of which is not subject to control, should be alternately positive and negative or in other words the direction of successive impulses should be alternately in opposite directions.

I have devised an apparatus by means of which this result may be accomplished in a simple and effective manner, and such apparatus is illustrated in the partly diagrammatic drawing which is hereto annexed.

In this drawing A designates the magnet of a relay connected up in a line circuit B, and arranged to attract when energized a spring retracted armature C.

This armature carries a contact arm D,

' adapted to be brought by the action of the magnet into contact with a spring or stop E and to thereby close the circuit of a local battery F over wires G, H, I and J leading to any controlled mechanism requiring for its operation current impulses of alternately opposite direction, and through a pole changing device. a

The pole changing device consists essentially of two contact sprin s K, L, connected by one wire as G with t e contact arm D and by it when in engagement with stop E with the positive pole of the local battery F. These springs are suitably held by an insulating support in line with and proximity to springs M, N, beyond which are two spring stops 0, P. A ratchet wheel Q is mounted below the abovedescribed spring and with it engages a pawl R pivoted to the armature C and a. stop pawl 8.. Fast to the shaft of the ratchet wheel Q is a gear wheel T which engages with the pinion of a second gear 7 U, which latter engages with a pinion V carrying an arm W with a roller at its end. In the normal position of the parts tile arm W is in a horizontallposition with its roller end in engagement with and forcing back either spring M or N out of con- I tact with' springs K or L and into contact with the outer stops 0 or P, but by the movement of armature C toward and then away from the relay magnet the movement imparted to the gears and by these to the arm W turns the latter through an arc of 180 degrees and shifts it from one spring N to the other M. 7

At a given moment the positive pole of battery F is brought into electrical contact with arm D and thence by wire G with the spring M, which at such moment is in contact with spring 0. The current will therefore flow from spring M to the wire I and thence to the controlled appa-- ratus, and back through wire J, spring N, sto P, with which it is in contact, and thence to I attery.

The movement of-the armature G, however, which has completed this connection shifts the pawl R, which on the retraction of the armature imparts through the ratchet Q, and the gear U movement to the arm W,

which allows spring N to contact with spring L, separates springs N and P, and on the other side separates springs, K and M and brings together spring M and stop 0.

By this means the apparatus is left in such condition that when the relay magnet next operates the positive pole of battery F will be connected to the wire J, and the current will return through the wire I, spring M and stop 0, and thereafter each impulse through the relay magnet leaves a path from the positive pole of the battery through either the wire I or the wire J, and the controlled apparatus will never receive two successive current impulses in the same di rection.

In the drawing a condenser X is shown connected to the local circuit around the break to prevent sparking. This and other details not specially described are matters well understood in the art.

What I claim is: ,1

1. In combination, a control circuit, a relay coil therein, a double pole double throw switch having its poles biased toa predetermined position, a controlled circuit connected tosaid switch and whose polarity is reversed by operation of said switch, and means controlled by said relay coil for operating said switch. i

2. In combination, a circuit, and means comprising a relay-controlled pole changer connected to said circuit for successively reversing the polarity of the latter, said pole changer comprising a pair of movable contacts a plurality of relatively fixed contacts, and an arm for alternately operating said movable contacts.

3. The combination with the relay magnet and its movable armature, of a ratchet wheel, means connected With the armature for rotating the same, gears operated there by, a pole shifting arm-actuated by said gears, springs in the local circuit adjusted by the said arm and a pawl connectedwith the armature and adapted to turn the ratchet on each retracting movement of the armature.

In testimony whereof signature.

I hereunto affix my WILLIAM F. KRAUTTER.

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