US2023952A - Selective market system - Google Patents

Description

Dec.10, 1935. R. F. DIRKES ET AL SELECTIVE MARKET SYSTEM Filed. June 30, 1932 I L J INVENTOR; R. F. DIRKES 4 TTORNE V Pa'tentedDec. 10, 1935 PATELNT once 2,023,952 -SELECTIVE MARKET SYSTEM Robert F. Dirkes, Jamaica, N. Y., and Morris R. Marsh, Plainfield, N. J., assig'nors to The Western Union Telegraph Company, New York, N. Y., a corporation of New York Application June 30, 1932, Serial No. 620,241

2 12 Claims. This invention relates to a telegraph-system and more particularly to a system for separatingreceived-signals into two or more groups for distribution to two or more printers or groups of printers.

It is particularly advantageous in connection with market service where it is desired to transmit .two or more different markets over a single line and ate. distant station to distribute each market to separate printers or over separate ticker networks. For example, it may be desired to transmit fromsome central situation such as Chicago to a remote city such as Denver a number of difierent markets no one of which consume the entire line time, and at the latter city to distribute any or all of said markets to brokers. banks, etc., in the adjoining sections I of the country.

For instance, certain bfokers may desire only the cotton market, others the grain market, etc.

Neither of these markets is sufiicient to occupy the complete line and therefore it hasbeen proposed, heretofore, to transmit a number of such markets over a single line and at the city of destination to retransmit manually the various markets over their individual networks. This system is not eflicient, however, in that it requires the service of a number of operators and causes an inherent delay in the retransmissionof thesignals.

One of the objects of the present invention is, therefore; to provide a system whereby anumber of such markets or services can be transmitted over a single circuit and at the receiving station automatically separated and distributed over 4 circuits individual to each market or service.

Another object is to enable the line to be divided between such services in proportion to the volume of business transacted in connection with each service.

A still further object is to enable two or more printers to be operated selectively over a single line in accordance with the signals intended fm' each printer.

Another object is to provide a selective distributing system of this nature which is simple, inexpensive andrequires aminimum of change in standard equipment.

Other objects and advantages of the invention will hereinafter. appear.

In accordance with our invention we contemplate that each group of signals representing a particular market will be preceded by an identifying or transfer signal indicative of such market, the receiving apparatus responding to such be recorded or the line or network over which they are to be repeated.

The invention is shown in connection with signals of the permutation code type, but it is not limited thereto, being also applicable to any other code. The equipment required forefiecting the selection between two markets, at the receiving station comprises three standard relays and a standard telegraph printer to which has been added three contacts.

The invention will be best understood by reference to the accompanying drawing in which the single figure represents diagrammatically a market selecting system embodying the present invention. v

The apparatus comprises a standardtelegraph printer P, and three polar relays A, B, and C. If the signals are assumed to be of the start-stop variety; that is, in which each character as of the form known in the art as a 5A ticker.

The construction of this ticker is fully disclosed in United States patent to Morton, No. 1,821,110, dated Sept. 1, 1931. This printer employs a group of five notched cod discs It, surrounded by an annular row of stop pins H, one of which is adapted to be forced into the notches of the discs when they are set in alignment. The pins ll serve to stop the type wheel (not shown) mounted on a shaft I! in a pre-selected position. The pins H are guided in the slots'lil of a disc or combfld.

In "the code employed the first five impulses determine the angular position of the type wheel through the setting of the discs I!) and the sixth F or shift impulse determines the case position of the type wheel. The type wheel is shifted either to letter orfigures case position by a shift lever 15 controlled, as stated, by the. polarity of the sixth impulse. Three contacts 16, I1 and I8, are

added to the standard printer to control the relays A, B and C.

The contact I6 is disposed adjacent the upper end of the shift lever l5. It is arranged to be held open in the letters shift position and to be closed by the lever I 5 in the figures shift position. Contacts l1 and I8 site two of the stop pins, designated HI and 2|,

and are arranged so as to be held open normally by these stop pins, but to close when .either of the pins are selected to enter the alined notches of the discs '10.

20 code 1 group is preceded by a starting impulse and folare disposed oppoother side of the contact is by conductor 23 to spond to positions ofthe type wheel which are not employed for printing functions in at least one case shift position. It has been assumed in the present embodiment that both pins l9 and 2| are idle in the figure case position. I

The pilot printer P is controlled through a. selecting magnet22, connected directly in the incoming line L, whereby the printer responds to all signals received over the line. The line signals are also repeated through the line relay LR to either one or the other of two printers PI and P2, depending upon which one of the two markets they represent. Relay B serves to connect the printer PI' to the tongue of the 'relay LR and relay C serves to connect the printer P2 to the tongue of relay LR. relays A, B and C will now be traced.

One side of the contact I6 is connected to positive battery through a resistance RI and the connected to one side of contact I! in parallel with one side of contact I8. The opposite side of contact 11 is connected operating coil OCI of the polar relay A in series with operating coil 0C5 of relay B, in serieswith operating coil 0C6 of relay C sixth pulse being marking to ground. The corresponding side of contact I8 is connected through operating coil 0C4 of relay A in series with the operating coils 002 and 003 of relays B. and C respectively, to ground. Each relay has two locking windings designated LCI to LCB, locking winding LCI being connected to the left contact of relay A in series with locking coils D02 and 106, respectively, of the relays B and C. Similarly locking coil LCI is connected to the right contact of the relay A in series with looking coils LC5 and L03 respectively of relays B and C. The tongue of the-relay A is connected to negative battery through resistance R2 and the tongues of relays B and C are connected respectively to the operating magnets of the printers PI and P2. The left or spacing contacts of relays B and C are connected in parallel through the resistance R3 to negative battery and the right contacts of these relays are connected in parallel to the tongue of the line relay LR.

The operation of the system is as follows. The incoming line signals are assumed to be composed of two markets which may be designated as market I an market 2, market I to be printed upon the printer 'PI and market 2 to be printed upon the printer P2. Associated with the signals representative of each market is a special identifying signal which we have termed the transfer signal and which determines the printer upon which the succeeding signals are to be recorded. As previously stated the receiving pilot ticker P receives all of the signals coming over the line and consequently it prints both markets. Its function is to set up certain circuitsin the relays A, B and C by means of'the contacts l6, I1 and I8. Assuming that all of the tickers P, PI and P2 are idle and it is desined to print market I upon the printer PI. The first character to'be received over the line will be the transfer character associated with market I. This character code group serves to select the stop pin l9 thereby permitting a switch I! to close. transfer code to consist of units I, 2, '3, 4 and 5 spacing and unit 6 marking, the first five impulses will cause the discs I0 to be moved in such position as to bring the notches in alighment opposite the pin l9, thereby closing the switch H. The

The control circuitsfor' Assuming this shifts the lever l5in' such manner as to close the contact IS. The two contacts l6 and I1 will be closed simultaneously and thus complete a through the contact I6, contact, I'I, conductor 23 and coils OCI, 005. and 0C6 of relays A, B and C respectively, to ground. The .directlon of current through these windings is such as to cause the tongues of relays A and C to move to their left contacts and the tongue of relay B to move to its right contact, thereby (1) establishing a circuit from negative. battery through the resistance R2, locking windings LCI, LC2 and LCS to ground; (2) completing a circuit from the tongue of the line relay LR through the tongue of relay B to the printer PI; and (3) connecting negative battery through the resistance R3 and left contact of relay C to the printer P2 to hold this printer idle. It will beflunderstood that with simplex printers the idle line condition is continuous negative battery. Due to the locking circuit established, all of the relays will retain this position during the transmission of the subsequent signals, which signals will be recorded upon the printer PI.

Assuming that after several quotations of market I have been transmitted over the line and recorded upon the printerPl, it is desired to print market 2 on the printer P2. 1 by sending a transfer character signal over the line so as to select the stop pin 2| in upper or figures case position. Such a transfer character will cause contacts I6 and I8 to be closed at the same time, thereby completing a circuit through these contacts and through coils 0C4, 0C2 and 0C3 of relays A, B and C, respectively, to ground. The direction of current to these coils is such as to place the tongues ofrelays A and C on their right contacts and the tongue of relay B on its left contact. Consequently, the printer PI is disconnected from the line and connected to negative battery through the resistance R3 and the printer P2 is connected to the tongue of the line relay LR... The locking circuits for the relay is completed from negative battery through the resistance R2, tongueand right contact of relay A, coils LCl, D05 and LC3 to ground. Succeeding signals will then be recorded upon the printer P2. It is to be understood that in place of the printers PI and P2 repeating relays may be provided for repeating the signals over individual ticker networks or if desired,'tongues of relays B and C- may be connected directly through outgoinglines. The sole purpose of contact I6 is to prevent the operation of the relays A, B and C when the stop pins letters position. If these stop pins correspond to blank spaces on the typewheel in both shift positions, the contact I6 will not be required. Obviously, numerous changes may be made in the system and apparatus without departing from the invention and, therefore, we do not desire to be restricted to the specific embodiment shown but contemplate all such obvious variations as I9 and 2| are selected in the lower case or 5 circuit from positive battery This is effected coming within the scope oi the appended claims. I

' comprising a market and being preceded by a single identify- 70 ing permutation, a receiving station, a separate recording circuit for each market terminating at said station, and means responsive to said identifying permutation for connecting the circuit associatedwith the market represented by 75 one identifying permutation, to said source of signals and disconnecting the other circuit therefrom.

2. A selective market system comprising a source of signals, said signals including a plurality of groups of character permutations, each group representing a particular market and being preceded by a single identifying permutation,

a receiving station, a separate recorder for each market,- and means including a printing machine responsive to said character permutations to produce a record thereof and also responsive to said identifying permutations for connecting the recorder associated with the market represented by each identifying permutation, to said source of signals.

3. A telegraph system comprising a source of signals, and a recorder responsive to predetermined of said signals for producing a record thereof, said recorder responding to predetermined others of said signals to distribute said first predetermined signals selectively to a plurality of other recorders.

4. A telegraph system comprising a source of permutation signals, a recorder responsive to predetermined of said signals for producing a record thereoi and a plurality of recording circuits, said recorder being responsive to a single received permutation for connecting said signal source selectively to one or another of said recorder circuits.

5. A telegraph system comprising a source of permutation signals, a pilot recorder, a plurality of printers, said recorder responding to all of said signals and serving to distribute predetermined of said signals to one or the other of said printers.

6. A telegraph system comprising a source of permutation signals including character selecting conditions and case selecting conditions, a recorder responsive to all of said signals, a plurality of printer circuits, and means including said recorder, responsive to predetermined of said character selecting conditions, in association with a predetermined case selecting condition for distributing said signals selectively to one of said 'printer circuits. Y

'7. A telegraph system comprising a source of permutation signals including character selecting conditions and case selecting conditions, a plurality of recorder circuits, and means responsive to predetermined character selecting conditions in association with a predetermined case selecting condition for connecting one of said recorder circuits to said source of signals and disconnecting the other recorder circuit therefrom.

8. A selective market system comprising a source of signals, said signals including a plurality of groups of character permutations and case selecting conditions, each group representing a predetermined market, a recorder for each 5 market, and means responsive to all of said signals and controlled by said case selecting conditions for selectively distributing each group of character permutations exclusively to its corresponding recorder. l0

9. A selective market system comprising a source of permutation signals, each permutation consisting of character selecting conditions and a case shift selecting condition, a receiving apparatus having a plurality of character selecting elements and a case shift selecting element, a plurality of recording circuits, contacts associated with predetermined of said character ele-- ments and a contact associated with said case shift selecting element, and means controlled by the operation of said latter contact and at least one of the former contacts for distributing said signals over one only of said recording circuits.

10. A telegraph switching system comprising a source of signals having character selecting and case selecting conditions, a receiver having a plurality of character selecting elements and a case selecting element, a plurality of recording circuits, a relay for each circuit for connecting its associated circuit with the source of signals,

and means controlled by the combined positions of said character selecting and case selecting elements for selectively operating said relays whereby to connect one of said recording circuits to the source of signals and to disconnect another recording circuit therefrom.

11. A telegraph switching system comprising a source of signals, a telegraph printer having character and case selecting elements, contacts associated with certain of said selecting elements, 40 andmeans controlled by the position of said contacts for connecting said source of signals to one or another of a plurality of recording circuits.

12. A telegraph switching system comprising a source of signals consisting of groups of character permutations, a pilot printer, a plurality of other printers associated therewith, said pilot printer being arranged to respond to all signals received fromsaid source, and means controlled by the selective operation of said pilot printer for distributing one group of said signals to one of said other printers and another. group to another printer.

ROBERT F. DIRKES. MORRIS R. MARSH.

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