US1546432A - Relay and circuits therefor - Google Patents

Description

July 21, 1925.

D. E. BRANSON RELAY AND CIRCUITS THEREFOR Filed June 21. 4

IN VEN TOR B E fll ZZIZJOII/ ATTORNEY Patented July 21, 1925.

UNITED s'ra'ras 1,546,432 PATENT OFFICE.

DAVID E. BRAITSON, 01 BLOOMFIELD, NEW JERSEY, ASSIGNOR TO AMERICAN TELE- IHDNE AND TELEGRAPH COMPANY, A CORPORATION OF NEW YORK.

RELAY AND CIRCUITS THEREFOR.

Application filed June 21, 192-1. Serial No. 721,487.

To all whom it may concern:

Be it known that I, Davin E. BRANSON, residing at Bloomfield, in the county of Essex and, State of New Jersey, have invented certain Improvements in Relays and Circuits Therefor, of which the following is as ecification.

.his invention relates to relays of the vibrating armature type, and more particularly to accelerating arrangements therefor. An object of the invention is to provide a circuit arrangement for polar relays when only a single local battery is available.

Another object of the invention consists in the use of such arrangement in connection with local and other circuits to provide for the opening and closing thereof or to provide continuous interruptions therein.

These objects and further objects of the invention will be apparent from the following description, when considered in connection with the accompanying drawing, in

' which a preferred embodiment thereof is diagrammatically represented.

Referring to the drawing, the numeral 4 designates the yoke of a polar relay which has associated withit a permanent magnet 5. The armature-of the relay, in this instance, is shown, as bein provided with a pluralityof'windingsi' 1e operating windmg 6 for the relay is connected to conductors 7 and 8, extending to an operating circuit in which is included a source of current that may flowthrough the windingti in either direction. The opposing windings 9 and 10 are-bridged across the contacts of the relay,

and are grounded at their center point 1n I such a w y that steady current flowing.

through these windings, as will presently appear, tends to move the armature 11 away from either the contact 121 the contact 13, against which itmay be resting, to the o The armature 11 may e posite contact.

' clamped at one end, and its opposite end may extend through the air gap provided between the pole pieces of the yoke 4. In this position the extended end of the armature may swing between the contacts 12 and 13. The accelerating winding 14, which is in series with the condenser 15, is also connected to the contacts 12 and 13, in such a way that a surge of current, upon the closing of a contact or at the time the armature 11 is in the air between the contacts, will supplement the influence of the operating correspondin the direction in which it is being vibrated.

In the present arran ement the o osin windings 9 and 10 sh pp g means of resistances 16 and 17, respectively so that their effect will not take control of the operation of the relay, but will serve to neutralize the effect of the accelerating winding 14.

' A condenser 18, in series with a resistance 19, is associated with each of the contacts 12 and 13 of the armature 11 toprotect said contacts from arcing, and also serve to prevent interference between the local relay circuits, in which rela 20 and [retardation coil 21 are respective yincluded, and the vibrating circuit.

The local circuit including retardation coil 21 is provided in case it is desiredto eliminate relay bias. This circuit is similar to the local circuit in which relay 20 is included, and is connected to ound from the contact 13 so that the-local clrcuits extending from each of the contacts of armature-11 to ground' will be entirely symmetrical.

Ifit is permissible to operate thepolar relay with a'slight bias for the armature 11, this may be brought; about by connecting only one contact o the armature to ground through the 'moderate resistance presented by-the relay 20, included in the local circuit connected to that contact, so that the oppoould be adjusted bysite contact .of the armature will have no local circuit and retardation coll connecte thereto.

Incoming current from the operating circuit over the conductors 7 and 8 fiows' of the armature on either contact 12 or 13 will cause a surge of current from the local battery over the contact against. which the armature may be positioned, and will hold the armature momentarily against the make contact by means of accelerating winding 14. With the armature 11 of the polar relay positioned a ainst the contact 12, as indicated in the rawing, a circuit is closed from local battery connected-to the armature, through said contact, resistance 16, opposing winding 9 to ground. In case the armature 11 is positioned against contact 13, a circuit will be closed from battery, through make contact 13, resistance 17, opposin winding 10, to ground. The closure of either of these circuits tends to neutralize the effect of the accelerating winding 14 and to move the armature from the contact at which it is site contact.

The circuit comprising the opposing windings 9, '10, and 14, including the reresistance 16 and 17," is so arranged that the relay may be made to operate in accordance with current incoming over the conductors 7 and 8 and flowing through the op crating winding 6.

The winding 6 may be omitted, if neces-f sary, and in such case the relay will be operated by the opposing Windin'gs'Q, 10 and the accelerating winding 14, and will function similarly to that previously outlined.

Each time the armature 11 in Vibrating rests against contact 12, acircuit is momentarily established from the-local battery,

through said armature and contact 12, wind ing of relay 20 to ground. The closure of this circuit causes the operation of relay 20, which in turn completes a circuit over'its make contact to operate such circuits and apparatus as it may be desired to control.

While the arrangements of this invention have been illustrated as embodied in a certain specific form which has been deemed desirable, it will be understood that they are capable of embodimentin many and widely ,varied forms without departing from the rious testing and measuring circuits.

What is claimed is: I 1. A vibrating relay system including a polar relay having anarmature, a pair of contacts between which said armature is adapted to swing, an operating winding associated with said armature to bias it toward either of said contacts, a winding associated with said armature and bridged across said contacts'to supplement the influence of said operating w1nding,a source of current connected'with said armature, and an opposing winding connected with each contact for completing a circuit from said source of current to neutralize the effect of the bridged winding on said arma positioned toward the oppo-' contacts between which said armature is.

adapted to swing, an operatingwinding associated with said armature to bias it to,

- ture, and a pair of windings associated with the'armature and brid ed across said con-' tacts, eachof said win ings being adapted ,to'complete a circuit trom said source of currentthrou h the contact with which it is connected and 'said armature to neutralize the'efiectof the bridged windingon the armature. v

3. A vibratingsystem including a polar relay-having an armature, a pair of contacts ,between which said armature is adapted to swing, an operating winding associated with said armature to bias it toward either of said contacts, an accelerating winding I bridged across said contacts to supplement the influence ofsaid operating winding, a

single source of current connected with said armature, and an opposing 'wmdmg connected with each contact member for completing a circuit from said source of current to neutralize the efl'ect ofthe operating and accelerating windigi tacts, and a local circuit controlled by, said armature through one of its'contacts.

4. .A v brating relay system including a polar relay having an armature, a pair of contacts between which said armature is adapted toswing, an operating winding associated'with said armature to bias it toward either of said contacts, 'a' winding bridged across said contacts to supl ement with which it is connected to neutralize the efiect of the bridged winding, and a resistance associated with each ,of the opposing windin s whereby proper relation is obtained etween the eiiects of the opposing;-

windings and the bridged winding.

a .on said armature; when 1t 1s positione at e ther of SaId'COIk- 5. A. vibrating system including a polar relay having an armature, a pair of contacts between which said armature is adapted to swing, anoperating winding associated with said armature to bias it toward either of said contacts, an accelerating Winding bridged across said contacts to supplement the influence of said operating winding, a single source of current connected with said armature, and an opposing winding connected with each contact member for completing a circuit from said source of current to neutralize theelf ect of the operating and accelerating windings on said armature, when It is positionedat one contact and tend tomovethe arnia'ture to the opposite contact when theoperatmg winding associated with said armature to.

bias it toward either of said contacts, a winding bridged across said contacts and connected therethrough with said source of current, said bridged winding being adapt- I ed'to supplement the influence of said op- I crating winding, and a pair of windings associated with the armature and budget], across said contacts each of said windings being adapted to complete a circuit from said source of current through the contact with which it is connected to neutralize the eifect of the bridged winding and operating windin a condenser connected with said bridge winding for efl'ecting therethrough, a change in current during the movement of said armature, said change in current taking place in advance of current changes through said opposing windings to accelerate the movement of said armature, and a resistance associated with each of the opposing windings whereby proper relation is obtained between the efi'ects of the opposing windings and the bridged winding.

In testimony whereof, I have signed my name to this specification this 20th day of June 1924.

DAVID E. BRANSON.

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