Dec. 31, 1946.] - E, WEBER - 2413,39‘! OSCILLATORY ARMATURE RELAY Filed May 29, 1941 M'WJZZR: Y W ' M Aa‘i'fTORNEYS. Patented Dec. 31, 1946 2,413,397 UNITED STATES PATENT OFFICE 2,413,397 OSCILLATORY ARMATURE RELAY Ernst Weber, Zug, Switzerland, assignor to Landis & Gyr, A-G., Zug, Switzerland, a corporation of Switzerland Application May 29, 1941, Serial No. 395,832 In Switzerland June 11, 1940 1 7 Claims. (Cl. 200-103) The present invention relates to change-over devices and more particularly to such devices which comprises an oscillatory armature relay. Objects and advantages of the invention will be set forth in part hereinafter and in part will be obvious herefrom, or may be learned by prac tice with the invention, the same being realized and attained by means of the instrumentalities and combinations pointed out in the appended claims. 2 short impulse it is moved out of its position of rest through the place of maximum ?ux density, in which operation on the subsequent falling back of the auxiliary detent armature it is locked and on energisation of the relay by the second impulse it is again released and thus after cessation of the impulse it can no longer be held by the auxiliary detent armature and can return to its position of rest. The oscillatory armature relay 10 is formed so that the oscillatory armature The invention consists in the novel parts, con- ' actuates a change-over contactor, which itself structions, arrangements, combinations, and im from time to time again interrupts the relay provements herein shown and described. current circuit closed from a place of actuation. The accompanying drawing, referred to herein In order to synchronise the relays which may and constituting a part hereof, illustrates one 15 have fallen out of step, the strength of the ?rst embodiment of the invention, and together with impulse can be made greater than that of the the description serve to explain the principles second impuse. of the invention. It will be understood that the foregoing general It is an object of the present invention to pro description and the following detailed description vide- an electrical change over device for use with 20 as well are exemplary and explanatory of the multiple tariff meters and the like which is cer invention but are not restrictive thereof. tain in operation; employs a minimum of The oscillatory armature relay consists of an mechanical parts, and is simple in operation and upright magnet coil 3 and ?eld piece 4, the latter economical in construction and operation. It is having the pole pieces I, 2 projecting outward a further object to provide an oscillatory arma 25 through a non-magnetic inner supporting plate ture relay change over device in which the chang 4'; and an oscillatory armature 5, an auxiliary ing over mechanism is electrically controlled and detent armature 6 and a change-over switch ‘I does not employ step by step mechanism or tilt mounted on said inner supporting plate and an ing devices. Another object is the provision of outer non-magnetic supporting plate 4a secured electrically controlled change over mechanism to the plate 4'. The oscillatory armature 5, which for change over devices of known types which is subject to the torque of a returning spring 3, may be easily and economically installed therein. bears a change-over pin in acting on the central The invention also provides an oscillatory arma contact 9 of the change-over switch ‘I, and an ture relay change over mechanism which is al abutment pin II to engage the end of the ways synchronized with its actuating force. auxiliary detent armature B. The two outer con Fig. l is a front elevation of a change-over tacts l2, l3 of the change-over switch ‘I are in relay or electric switch embodying my invention electrical connection with the contacts [4, [5 of and showing a circuit in which it is arranged. a change-over switch I ‘i also having an oscillatory Fig. 2 is a top plan view, partly in section, of the contact It. The switching apparatus is con relay. In accordance with the illustrative form of the present invention a change over mechanism com prising an oscillatory armature which is ener nected to a source of current l8. In the moving over of the oscillatory contact It of the change-over switch I‘! by hand or by means of a clock to engage contact l5, the cir gized at intervals is provided with an auxiliary cuit of the coil 4 of the relay is closed. The detent armature controlled by the same ?eld as 45 oscillatory armature 5 is then attracted by the the oscillatory armature. This auxiliary arma poles I, 2 of the ?eld piece, in which operation ture acts on the oscillatory armature in such a by reason of its inertia it passes out beyond the manner that after energisation of the relay, by places of maximum flux density. At the same means of a ?rst impulse, it holds the oscillatory time, the auxiliary detent armature 6 acting as armature in the attracted position and after 50 a detent pawl and subject to the pressure of a energisation of the relay by means of a second spring [9, is also attracted by the pole I of the impulse again releases the oscillatory armature upright magnet 3. and allows it to return to its position of rest. The _ The energlsing current circuit immediately travel and inertia of the oscillatory armature can after the attraction of the two armatures 5, 6 is be such that on energisation of the relay by a interrupted by the change-over pin l0, since this 2,413,397 4 armature and thus release the main armature, then releases the‘contact 9, so that the latter by but not to bring the oscillatory armature from the force of its spring 2?} comes on to the con the position of rest into the locked position, so tact E3. The oscillatory armature 5 which has that synchronisation of the relay is obtained in a come out beyond the places of maximum flux simple manner, and thereby any falling out of density begins to f all back somewhat immediately step of the relay is avoided in practice. after it reaches that position, due to the action Since in the above described oscillatory arma of spring 8. In the meantime, the auxiliary de ture relay, the changing over and the mainte tent armature 6 has also fallen away from the nance thereof take place by means of electrically pole 1 due to the interruption of the circuit, so that the oscillatory armature 5 by means of the 10 controlled means, namely an auxiliary detent armature, which does not require any further abutment I l is prevented by the auxiliary arma mechanical means, such as step-by-step mecha ture 6 from falling back into the position of rest. nism or tilting devices, the certainty of operation In this operation the oscillatory armature 5 is of relays of the improved kind is very high. so held by the auxiliary detent armature 5' that Furthermore, by this means by selective dimen it still does not take up the mid position i. e. a sioning of the strengths of the two impulses position in the places of maximum ?ux density. actuating the relay, a synchronisation of the relay [is soon as the oscillatory contact it of the can also be obtained. It is moreover important change-over switch ii is again brought on to the and advantageous that the oscillatory armature contact Hi, there takes place through the contacts relays heretofore made on mass production lines 9, E3 of the change-over device ‘l a closing of the and therefore inexpensive can be employed with energising current circuit. In this case, there out alteration and have solely to be provided in is now ?rst attracted only the auxiliary detent addition with the auxiliary detent armature. armature 6 by the pole l of the upright magnet. 3. The invention in its broader aspects is not The oscillatory armature 5 is thereby released, limited to the speci?c mechanisms shown and so that it is attracted and therewith moved back described but departures may be made there through a short distance into the position of from within the scope of the accompanying maximum flux density. This small backward claims without departing from the principles of movement of the oscillatory armature '5 is suffi cient to enable the change-over pin iii to remove , I the invention and without sacri?cing its chief advantages. the contact 9 from the contact l3 and ‘to bring What I claim is: it again into engagement with the contact E2. l. A change-over relay comprising in combina The relay is then again lie-energised and the tion an oscillatory armature to be oscillated by oscillatory armature 5 can now return to its posi tion of rest, since it can no longer be held by the _ . an electrically energized magnetic ?eld from a falling back of the auxiliary detent armature 6, “ position of rest to an oscillated position to and through the position of magnetic equilibrium and as the abutment I i already lies behind the edge an auxiliary detent armature normally arranged of the auxiliary detent armature 6. in detaining position and embodying a unitary The movements of the oscillatory armature are employed to effect any desired switching-over, motion. Ina multiple-tari?‘ meter installation‘ on the response of the oscillatory armature the counting mechanism can be changed over from one to theother counting mechanism and this change over maintained by'theauxiliary detent armature. In this operation, the pivotal shaft 2! of the oscillatory armature can be connected to a lever, which acts in a known manner on the element controlled by the magnet ?eld through successive intermittent impulses energizing and deenergizing said ?eld so as~to be ?rst attracted by a ?rst impulse produced ?eld and moved to non-detaining position, then released and allowed to move to detaining position to engage and hold the oscillatory armature in its oscillated position on the interruption of said produced field, and then attracted to non-detaining position by a second impulse produced ?eld to release the change~over pinion of the double tari? meter armature and finally allowed to move back to its mechanism. This arrangement is not shown in the drawing, as it is well known in the art and 50 normal detaining position on the interruption of forms no part of the present invention. Instead such second ?eld. ' 2. A changemver relay comprising in combina of the mechanical change-over an electrical one tion an oscillatory armature having opposed poles can obviously be employed It is obvious that the and mounted for oscillation centrally on a hori oscillatory armature relay is also directly appli zontal transverse axis in a magnetic ?eld between cable for purposes other than for changing the coacting poles, and energized by intermittent tariii. When the actuating device produces the im electric impulses to oscillate said armature from pulse, the change-over device on the relay is ob its postiion of rest to an oscillated position into viously dispensed with. If a whole series of oscil and through the position of magnetic equilibrium, latory armature relays is actuated by the change 60 and an auxiliary detent armature normally ar over switch, it is advantageous that one osci1la~ ranged in detaining position and embodying a tory armature relay with a change-over device unitary element controlled by the magnet ?eld shall co-act with the change-over switch, whilst through successive intermittent impulses ener the remaining relays are connected in parallel gizing and deenergizing said ?eld so as' to ‘be with this ‘relay and have no change-over devices. ?rst attracted by a first impulse produced ?eld In order that the relay in the event of a single and moved to non-detaining position, then re lapse shall again come into step, a resistance 22 leased and allowed to move to detaining position is advantageously inserted in the branch conduc to engage and hold the oscillatory armature in tor between the contacts is and I5, whereby the result is obtained that the ?rst impulse is stronger 70 its oscillated position on the interruption of said produced ?eld, and then attracted to non-detain , than, the second. In the first stronger impulse, ing position by a second impulse produced ?eld the oscillatory armature is attracted and in the to release the armature and ?nally allowed to second weaker impulse it is released by the move back to its normal detaining position on auxiliary detent armature. This second weaker the interruption of such second ?eld. impulse is suf?cient to lift the auxiliary detent 5 2,413,397 3. A change-over relay comprising in combina tion an oscillatory armature having spaced poles and mounted for oscillation centrally on a hori zontal transverse axis between coacting poles in a magnetic ?eld energized by intermittent cur rent impulses from a position of rest to an oscil 6 detaining position and back again to detaining position to engage and hold the armature in thrown position and operative on a second cur rent impulse to move to a non-detaining position to release the armature for retraction and upon the cessation of said second current impulse to lated position into and through the place of move back to its normal detaining position. maximum flux intensity, a pair of switches to 6. An electrical switch comprising in combina tion a vertically disposed electromagnet having energize said magnetic ?eld when closed actuated by the armature on its opposite movements to 10 upper and lower poles, an oscillatory armature having coacting poles and mounted for oscillation close one of said switches when the armature is on a central horizontal axis located between the in the position of rest and the other of said poles of the magnet for movements between switches when the armature is in the oscillated initial and thrown positions, a pair of circuit position, said switches being opened by slight make and break switch contacts, a switch mem movements of said armature away from said posi ber for alternate engagement with and disen tions, and ‘an auxiliary detent armature con gagement from said contacts to transmit alter trolled by the magnetic ?eld for movements into nate current impulses to energize the magnet and and out of detaining position and adapted to be moved successively out of detaining position 20 deenergize the same after each current impulse, a switch actuating element carried by the arma and their back into detaining position to engage ture and oscillating therewith for moving the and hold the armature in oscillated position after switch member alternately into engagement with alternate energizations of the magnetic ?eld, and. disengagement from the respective contacts ,4. A change-over relay comprising in combina on preliminary portions of the movements of the tion a vertically disposed electromagnet having 25 oscillatory armature in opposite directions, and a spaced poles, an oscillatory armature having co pivotally mounted auxiliary detent magnet ar acting poles and centrally mounted on a horizon ranged in the ?eld of one of the magnet poles tal axis for rotary motion between the poles of so as to be in?uenced thereby and operative on the magnet from a position of rest out of the posi a ?rst current impulse and its cessation to move tion of magnetic equilibrium to an oscillated posi 30 respectively from a normal detaining to a non tion to and through said position of magnetic detaining position and back again to a detaining equilibrium, by energizing said magnet in im position to engage and hold the armature in pulses, a pair of switches to energize said magnet thrown position and operative on a second cur when closed, means actuated and carried by said rent impulse to move to a non-detaining position armature to close one of said switches when the to release the armature for retraction and upon armature is in the position of rest and the other the cessation of said second current impulse to of said switches when the armature is in the move back to its normal detaining position. oscillated position, said switches being opened by '7. An electrical switch comprising in combina slight movement of said armature away from said tion a vertically disposed electromagnet having positions, and an auxiliary detent armature ar ~10 upper and lower poles, an oscillatory armature ranged to be attracted by one pole of the magnet having coacting poles and mounted for oscilla and moved to non-detaining position by a ?rst tion on a central horizontal axis located between impulse and rendered operative to engage and the poles of the magnet for movements between hold the oscillatory armature beyond the posi initial and thrown positions, said arm having a tion of magnetic equilibrium after the ?rst im latch projection thereon, a pair of circuit make pulse and to be attracted and disengaged from and break switch contacts, a switch member for the oscillatory armature upon a second impulse alternate engagement with and disengagement and to return to non-detaining position after said from said contacts to transmit alternate current second impulse. impulses to energize the magnet and deenergize 5. An electrical switch comprising in combina 50 the same after each current impulse, a switch tion a vertically disposed electromagnet having actuating element carried by and oscillating with upper and lower poles, an oscillatory armature the armature for moving the switch member having coacting poles and mounted for oscilla alternately into engagement with and disengage tion on a horizontal central axis located between ment from the respective contacts on preliminary the poles of the magnet for movements between 55 portions of the movements of the oscillatory initial and thrown positions, a pair of switch armature in opposite directions, and a pivotally contacts, switch members for alternate engage mounted auxiliary detent armature arranged in ment with and disengagement from said con the ?eld of one of the magnet poles so as to be tacts to transmit alternate current impulses to in?uenced thereby and operative on a ?rst cur energize the magnet and deenergize the same 60 rent impulse and its cessation to move respec after each current impulse, means actuated by tively from a normal detaining to a non-detain the armature for moving the switch member ing position and back again to detaining position alternately into engagement with and disengage to engage the latch projection on the armature ment from each contact on preliminary portions of the movements of the armature in opposite directions, and an auxiliary detent magnet ar ranged in the ?eld of one of the magnet poles so as to be in?uenced thereby and operative on a ?rst current impulse and its cessation to move respectively from a normal detaining to a non and hold the armature in thrown position and operative on a second current impulse to move to a non-detaining position to release the arma ture for retraction and upon the cessation of said second current impulse to move back to its nor mal detaining position. 70 ERNST WEBER.