US1661748A - Louis l - Google Patents

Description

L. L. CHAUVEAU CALL SELECTOR Filed Jan. 8. 1923 March 6, 1928.

Elwuqntoz L0 3\.. CHAUVEAU, @513 ms 2 Q Patented Mar. 6, 1928 siren sr Tss LOUIS L, CHAUVEAU, ()F PARIS,

CALL SELECTOR.

Applicationfiled January 8, 1923, Serial No; 611,537, and'in France January 17, 1922.

The present invention relates to a new type of call selector. Thev object of this apparatus is to cause the actuation of a calling device (bell, etc.)." The apparatus may be a controlled over wires orby means of wireless telegraphy and is responsive to signals compoles,'respectively, of a source of electricity,

(battery storage battery, generator, etc.) not shown in the drawing.

1 is a contact which may be closed manually or by means of any-suitable relay (not shownjcontrolled by a receiver for wireless or wire telegraphy. This contact 1 controls the circuit of relay 2 in such a manner that said relay is energized upon'each closure of the contact and while the contact is closed. In response to each one of these impulses the relay 2 is energized through the circuit: from contact 1,'relay 2, contact 33, to

(+) and closes through its contact 6 the cir-.

cult of the controlling relay 8, and the latter being energized, closes its holding contact 9 and thereversing contact 10. As a result of this, upon each closureof contact 1, the re lay 8 is energized from minus'through contact 6, relay, 8 to plus and locks up through its contact 9 from the minus connection as sociated with relay 11 through contact 26, contact 9, relay 8 to plus. By actuating the contact 10, the circuit of the normally energized slow-release relay 11 is opened. This relay may be of the slow-release type used in automatic telephony and is adjusted'in such a manner that its normally open contact 12 is closed only after the expiration of apeceased to be energized if the signal received is a dot, but willbe still in energized condition it the signal received is a dash. 'The Contact 12 extends the current path to the re- The apparatus is soar-ranged that the riod of time required for a dot. Therefore, when the contact 12 is closed, the relay 2 has versing contacts 7 whereby, ifthe signalreceived is a dot, current flows through con ductor 15, and through conductor 14 if the, signal received is a dash. This arrangement constitutes the dot and dash selector.

At the same time that relay 11 allows its contact 12, to close, it opens itscontact 26 which in turn opens the locking circuit of relay 8. The apparatus is now in condition to select a new signal. It is necessary to arrange for the transfer of the signal, depending on its nature, to its proper circuit and for this purpose the relay 2 is provided with a set of contacts 40. When the contact 1 is 'openedthe contact 40 is in its normal position and closes an energizing circuit from minus to contact 40 on the right hand side,

contact 42, relay 41toplus for the relay 41 "which in. turn locks up through minus to contact 45, contact 42, relay 41 to plus. The relay 41 closes also the contact 43.

When a signal is received theline 46 is connected thru relay 44, contact 43 and the contact 40 with the pole of the battery.

Circuit may then be completed thru. the line 46 through one of the electromagnets. or relays 47, 50, 53 and 56 to the pole, as described below. For example, when the proper initial signal is received, relay 2 is energized by the closing of contact 1 thereby moving all of its movable contacts to the left, and with relay 41 energized as explained vabove thereby closing contacts 42 and 43, the circuit through relay 47 is .as follows: 40 on the left, 43, relay 44, line 46, 68 on the left, relay 47 ,conductor 58?, 58, 33 to The relay 44'will then be energized and opens at 45 the locking circuit of the relay 41'. The contacts 42 and 43 of this latter relay are opened and the line 46 is disconnected from the negative pole at 43.

During the silent period following the receiving of the first signal the relay 41 is again energized. These operations are repcated upon the receiving of each signal and a short currentimpulse is sent through the line 46 at the. beginning of each signal. I

When the first impulse is sent the line 46 is connected through contact 68 on the left hand side with the relav 47. This relay bej short impulses under-the control of the relay 44, the relay 50 does not now become energized. It will be energized upon the. send ing of the next impulse. Relay 47v being locked up through contact 68 on the right hand side to as a result of the first i'nipulse, and contact 49 now belng closed, relay 50 will be energized by the following cir cuit: 40 on the left, 43, relay 44, line 46, 49, conductor 49 51 onthe left, relay 50, conductor 58, 58,3810, The relay 50 illt-henlock a result o fi-the second; impulse tf fi llloivs z 51 on the right, l y. Q, flli l fll r 8, 34. l- A? a result contact 52, wjil l close and prepare.

re ay 3, for e. hir mpul eby C nn c ing the relay 58with signal line 46.

Upon the sending of, the third, impulse,

any will, be energized by the. following.

circuit:l( 40fon the left, 43, relay 44, line 46, 52;. conductor 52%, 54 on the left,

relfa is's, 53, 33,60 The'relay 53 will,

then look up, through its contact 54 on the right to At" san e t me contact 65"kyil1fhe closedto prepare relay 56 for the,

fourth impulse by connecting the relay 56 to the signal line '45, through 55, conductor 57 oni the left, relay 56, conductor 58 58,3 3 to( Theltoiu th i npulsewill then energize relay 56, Wl 1ich w ill lock up'through ),"57 'onthe right, relay 56 conductor.

,8,, 33? 4+ :t It W'll be SBS L that such. arrangement mahespossible the successive: operation o t;

' the electroinagnetsjor relays 47, 50, and

56in accordance with the arrival of the le- 11. der 9 i s r a were: pe at on it is necessary that: the contactj68 be. closed as soon as theiela .47 o crates and that the C n act 49 e dined n a th nd of. the operation of said nelay. The same thing holds good also for relays'SO, 53 and 56 and such adjustinents inay bereadily made in the contact springs. It'rnay happen that the,r,elay,44 opensthe locking circuit of relay 41 too soon; adjustment of itscontactspring.

will then he requirech The contact 43 being;v

pene inf s pen e he uc e s ve. op ra;-

tion these two relays, the line46 will be current for a sufiicient length of tirne to cause th BHQI'PDIHZQQQIL ot'one of the relays 47, 50, 53 or 5 r In accordance withthe operation of relays 47, 50, '53 and 56, the restoring relay 23 is connected through the contacts 17, 18, 19 and 20 either with the dot line 15 or with the paratus is adjusted, the contacts'li', 18, 19 and 20 arenot traversed by current, Whereas if the signal group received does not correone of the traversed-by current whereupon the relay 23 beco nes energized from the minus connection associated with relay 11, contact 12 eithec of contacts 7 through contacts 17, 18,

19, 20, through contact 24,through restoring y, ,-wr1us n pens in ente t 58 the'circuit of the relays 47, 5Q, '53, 56 andv theserelays cannot operate unless the Sig]- ls eceiired. belo to the c eep i 1 hi h the apparatusisjadjusted.

tlie'oneior' which the apparatus. i sse't is re;

ceivefd, (it being notedthat the figure illustrates the apparatus set tor the signal Then, if the first iinpulse received is a: a shout current iinpulse will; besent,

through the circuit, 40fto the left, 48, relay-4 4, signal line 46, 68 on',thelet, relay 47, conductorhS, 58, 3310 resulting in relay 4'7 lockingiupa-t 68, to the right to,

(), and'closing, contact 17 -At thefsani'e tune, a short current impulse Willbe sent throughgthe circuit (f), contact, 7 to the,

right, 'd-ot-line15,'cQI1tact 1:7, conductor 17f, 18, conductor 18?, 19, conductor 19 20, relay 23 to This auses the en'ergization of relay 28, thus breaking the. circuit of'relay 47 at 58, and causingthc apparatus tobe reset to its original setting. Now suppose that the first irnpulse correct, namely a, and the second, impulse is also a )7,

the latter being incorrect for the particular setting of the apparatus, then, a current impulse i-villbe senttln ough dash-line 15', contact 18 to the right, conductor 18". 19to the ft) C nduc or 9%, Co tac 0,. thereby energizingrelay 23, which in turn breaksfthe circuits of delays 47 and 50 at 58, thus restoring-the apparatus to its original setting.

Letus, assume that a, signal difieren t, than ,spond to the adjustment of t-he appar'atus, above mentioned contacts is h f ey 231's Pro ded; With a ea contact 24; which holds it 11p f1f01 11 minus, tac ee'ntaq 24, rem in plus s soon as it receives an impulse and until; the slovvrelease relay 2? becomes deenergized.

This slorvrrelease relay controls the duration of the silent scribed. I r

7 Upon the energiz ationi of the controlling relay 8 a circuit is closed in, the contact 10 for the slow releaserelay 27 which. is provided for the purpose of controlling theduperiods in a manner to b eederation of the silent periods separating the signals of one and'thesaine group, In response toeach signal received the relay 27 becomes energized it the signals received follow each other in, normal succession. i. e. if the duration the silent periodseparafl ing two consecutive signals is, shorter than eft me m rg n of he l w-act ng m gn riods between the signals and before the v receiving-of the last signal (if they are too long) cause the restoration of the apparatus.

If the signals received belong to the group for which the apparatus is adjusted and if the signals aresent in normal sequence i. e. if they are separated by suit-able'silent periods, the relays 47, 50, '53 and 56 will op,-

, erate in thenormal manner indicated above.

Two things may happen n'owz'either the group of signals received is the one for which the apparatus is adjusted or the group of'signals received comprises one more signal than is required by the adjustment of theapparatus. v

Inthe first case the group received will be followed bya longer silent period than the normal silent period separating the signals, the contact 28 of the slow-release relay magnet 27 will return to normal and an energizing circuit will be closed'through c011 ductor 29 and the contact 22 for the ring ing 'relay31. Relay 31 closes contact 33 completing the circuit of the call-bell S. At the same time, the relay 31locks up through contact34 to the minus pole until the apparatus is stopped, either by hand or by means ofa key 35. When the relay 31 operates, the relay2 is disconnected from the pole-in contact 33. F or this reason, the. signals that might be sent later on, will not be received until therelay 31 is returned to its'normal condition upon the actuation of key 35. p

The bell willriiig untilthe' key 35 is depressed, and during all this time the signals do not actuate theapparatus.

Upon the energization of the ringing relay 31, the contact 33 also disconnects the positive pole from the common return leading to the relayse'i, 50, 53, 56 whereupon these relays become deenergized.

In the secondcase, if the group of signals received is followed by another signal, the contact 21 being closed at this time, the restoring relay will be energized at the beginning vof this additional signal and will re store the apparatus to its normal position without causing the actuation of the bell. It will be seen therefore that the calling device cannot be actuated by a group of signals composed of the same signals as the group for which the apparatus is adjusted but comprising an additional signal (dash or dot). In this manner, if the Morse code is used and the apparatus is adjusted for 2 ther incase of the letter S the device cannot be operated by the letter .B'(.. as

the restoring relay 23 is energized by the first signal (which is adash) and locks up through its contact 24 and the contact 28 of the slowrelease relay 27. The relays 47'. 50, 53 and 56 are restored to normal until a suiliciently long silent period is produced.

It will be seen, therefore, that when an apparatus is adjusted forla certain group of" the letter S ,itwill not respond to the signals, the calling device does not respond unless the group is normally sent out, i. e.

signal and the periods for spacing the signals are not too long. In this manner, the

so it is neither preceded or succeeded by any system adjusted for a certain group cannotbe'actua-ted by elements of other consecutive gr0ups. g e

The above description was given merely for the purpose of exemplifying-the invention, the arrangement disclosed relating to a group of signals correspondingtothe letter C .),of the Morse code Obviously, the apparatus may be subjectedto various modifications or simplifications depending on the particular application desired. The type and construction of the relays or magnetsfis arbitrary, the main thingbeing that these relays perform the functions disclosed.

The apparatus may be used to respond to call signals, such as groups of letters in wireless telegraphy for ships or to respond to the SO S signal. In this case the num berofthecontacts 17 to 20 and relays 4C7 to 56 will be increased to equal the total 1 number of signals formingthe' different lettersvof the call indication. i

. In the case of transmission over wires, the

apparatus may be simplified, whenever possible,by substituting in the place of the I .Morse code, a code composed of groups coinpr-ismg a unlform number of signals. 1

A certain elasticity in the cadence of op- I eration may be obtained by proper adjustment-of the slow-release relays 11 and 27 in such a manner that, the contact 1 may be manually controlled. This elasticity may be further increased if the relay 27, instead of controllingthe silent periods between each I signal, is used for controlling the duration of the whole group (both impulse and si-j lence Under these conditions, the manipu- 1 lation may beirregular but the apparatus will respond as long as the signals forming v the group are sent out during a time determined' by the slow-release relay 2'7, irrespective of the cadence of manipulation during this time. i

In addition to its use as a call selector, this apparatus may be used also as a selector for controlling distant mechanical functions or as a telephone or telegraph selector.

4, Lee

Having described my invention I declare. that what I claim is 1-, In combination, a repeating relay, impulse, relays actuated thereby, one of which elfects a time delay, a signal line connected with the other impulse relay, a series of character relays sequentially associated with the signal line on successive impulses, dot, and dash lines associated with the firstim-, pulse relay, contacts controlled by the char acter relays to connect the dot or dash line in predeterminedsequence, and means controlled by such connections to restore the character relays when operated out of; Se.- quence for which they are arranged.

2. In combination, a. repeating relay, impulse relays actuated thereby, one of which etiects atime delay, a signal line connected with the other impulse relay, a series of character relays sequentially associated with the signal line on successive impulses, dot and dash lines associated with the first impulse relay and controlled by therepeating relay, and means controlled; by each character relay for sequentially completing the dot and dash line circuits.

3 In combination, a repeating relay, impulse rel ys actuated thereby, one of which effects a time delay, a signal line connected with the other impulse relay, a series ofcharacter relays sequentially associated with the signal; line on successive impulses, dot, and dash lines associated, with the first impulse relay, a restoring relay for opening the circuits to the character relays, a space relay for rendering the restoring .relay inoperative, contacts controlled by the character relays for connecting the dot and dash line to the. restoring relay in a predetermined sequence whereby the restoring relay will nullity the eiiect of prior impulses on the character relays whenever an impulse out; of sequence occurs.

4. In combination, a repeating relay, iinpulse relays actuated t ereby, one ofwhich. effects a t me delay, a signal l ne connected with the other impulse relay, a series of character relays sequentially associatedwith the signal; line on successive impulses, dot. and dash lines associated with the first impulse relay, a restoring relay for opening the circuits to the character'r-elays, a space relay for rendering the restoring relay inop- 'erative, contacts controlled by the character relays for connecting the dot and dash line tothe restoring relay ina predetermined sequence whereby the restoring relay willnullify the etl'ect of prior impulses on the character relays whenever an impulse out of sequence occurs and the. space relay will nullity the efi'ect whenever improper spacmg occurs. r V

5. In a call selector, means responsive to received impulses, timing means tor determining the length of impulses received on the was impulseresponding means, a conductor and means whereby itis arranged to be ener-- gized whenever an impulse is received by the responding means, two conductors and: means including the timing means whereby they. are arranged to be selectively euer- .Q'lZQCl according tothe lengtlrot the received impulses by the responding means. a plurality of relays and means whereby they are arranged: to be connected in sequence to saidlirst conductor-on the receipt of successive impulses, means controlled, by the last of said relays to prepare a call, circuit, predetermined connections between the two conductors and the successive relays corresponding to the signal to which the selector is to respond, and means cont-rolled by said connections for prev nting; the preparation. of the call circuit by said relays when. the receivedsignal does not correspond; with the sequence 0? connections. Y

6. A call selector having a call circuit adaptedto benenergized when signal inn ductor and arranged to be energized sequentially only upon receipt oi the signal in pulscs for which the selector is. adpisted, means associated. with the timing meansand.

.with the character'relays for nullifying the effect of prior impulses on the relays when other impulses areQreceIved on the responding means, and means controlled by the last of said relays to prepare the call circuit for energizing an indicator.

7. In a call selector, means responsive to received impulses, timing means associated therewith for determining the length ofthe impulses received on the impulse responding means, a plurality of line-conductors and means whereby one of said conductors is arranged to be energized whenever an impulse is received. means including the time ing means whereby another of said conductors is arrangedto be energized whenever thereceived impulse is a dot and means including thetiming means whereby thethird conductor is arranged to be energized whenever the received impulseis a dash, a plurality ot'relays, the number of said relays corresponding to the number of impulses in the call to be selected, means whereby said relays are arranged: to. be connected in sequence to. said first mentioned conductor on the receipt of successive impulses, means associated with the relays and with the dot and cash line-conductors in such manner that when a relay and either the dot or the dash ill) line-conductor are simultaneously energized, the selector will return to normal, and means controlled by the last of said relays for preparing a circuit for energizing an indicatingdevice.

8. In a call selector adjusted to respond to desired signal impulses, in combination, means responsive to received impulses, timing means associated therewith for determining the length of impulses received on the impulse responding means, a plurality of relays assiciated with the impulse responding means energized in a predetermined sequence on the receipt of desired signal impulses, means controlled by saidrelays and said timing means for restoring the selector to normal on the reception of an undesired signal impulse, and means controlled by the last of said relays to prepare a circuit for energizing an indicator.

9. In a call selector adjusted to respond to desired signal impulses, in combination,

means responsive to received impulses, timing means associated therewith for determining the length of impulses received on the impulse responding means. plurality of relays associated with the impulse respondingmeans energized in a predetermined sequence on the receipt of desired signal impulses, means controlled by said relays and said timing means for restoring the selector to normal on the reception of an undesired signal impulse, means controlled by the last of said relays to prepare a circuit for energizing an indicator, and a second timing means for completing said circuit on the expiration of a predetermined silent period after the termination of the last impulse as received on the impulse responding means in the sequence for which the selector is ad justed.

10. A call selector adjusted to respond to desired signal impulses, comprising means responsive to received signal impulses, a sig-' nal line conductor energized whenever an impulse is received through said means, a plurality of relays associated with said signal line conductor and arranged to be energized in a predetermined sequence only upon the reception of the desired signal impulses,

- call circuit.

leasing relay associated with said signal responsive means for restoring the system to normal at the expiration of a predetermined silent period after the termination of any signal impulse except the last impulse of the predetermined sequence, said slow releasing relay completing the circuit for energizing the indicator at the expiration of a predetermined time after the termination of the predetermined sequence of desired signal impulses. v

11. In a call selector for indicating the reception of certain desired predetermined signal impulses, in combination, means responsive to received signal impulses, a series of relays assoclated' with the signal responsive means equal in number to the total number p of desired signal impulses, means for consecutively energizing each of said relays upon the reception of desired signal impulses in sequence, a call circuit, and means actuated by the last relay for closing the call circuit. I

12. In a call selector for indicating the reception of certain desired predetermined signal impulses, in combination, means responsive to received signal impulses, a series of character relays associated with the signal responsive. means equal in number to the total number of desired signal impulses, means for consecutively closing a circuitthrough eachcha-racter relay upon the reception of desired signal impulses, a call circuit and means actuated by the last character relay for closing the call circuit, circuit breaking means associated with a common portion of each character relay circuit, and means associated with each character relay for actuating the circuit breaking means upon the reception of an undesired signal impulse, thus preventing the operationot the LOUIS L. OHAUVEAU.

Images