US2842315A - Sequential pulsation timer - Google Patents

Sequential pulsation timer Download PDF

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Publication number
US2842315A
US2842315A US361608A US36160853A US2842315A US 2842315 A US2842315 A US 2842315A US 361608 A US361608 A US 361608A US 36160853 A US36160853 A US 36160853A US 2842315 A US2842315 A US 2842315A
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counting
terminals
cathode
tube
conductor
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Julius L Solomon
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Welding Research Inc
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Welding Research Inc
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Priority to US361608A priority patent/US2842315A/en
Priority to GB1757554A priority patent/GB753403A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable

Definitions

  • the invention relates to an electronic timing system for the individual timing of a number of operations or functions taking place in sequence such as may be performed by a welding machine and has reference more particularly to a timing circuit employing electronic elements including a cold cathode glow transfer tube in combination with control means therefor for effecting a counting function.
  • Objects of the invention are to provide an improved electronic system which will accurately time any desired operation by counting a predetermined number of electric pulses supplied by an electric current source; to provide an electronic timing system as described which may be utilized as a pulsation timer or as a heat-cool timer for seam welding; and to provide an electronic timer which will be simple in construction, embodying relatively few parts, and wherein the parts can be duplicated and connected in series relation for adding additional stages to the system.
  • a further object resides in the provision of a pulsation timer which will utilize two or more cold cathode glow transfer tubes as the counting elements, and wherein circuit control means are provided for switching from one counting element to the next at the end of their counting function.
  • a more specific object is to provide a pulsation timer which will incorporate a pair of counting elements as herein described in combination with a control circuit for switching the counting function from one element to the other so that they alternate in operation.
  • Another object resides in the provision of counting elements for a timing circuit and wherein said elements are electrically connected by a control circuit and by a commutating circuit, the latter circuit incorporating electric translating means for transmitting pulses and which are so connected to the elements that certain translating means will supply current pulses to be counted to one element and will supply current pulses for resetting purposes to another of the elements.
  • Figure l is a view illustrating schematically the various elements and circuit connections comprising the cold cathode glow transfer tube employed by the present invention as a counting instrumentality;
  • Figure 2 is a wiring diagram schematically illustrating the control circuit for switching the counting function from the counting instrumentality of one stage to the counting instrumentality of the next stage;
  • Figure 3 is a wiring diagram of the control circuit for a commercial form of pulsation timer coming within the invention
  • Figure 3A is a view illustrating schematically the various elements and circuit connections for a pair of counting instrumentalities such as employed by the invention and which are electrically connected to the control circuit of Figure 3;
  • Figure 4 is a wiring diagram schematically illustrating a modified form of timing system coming within the invention and wherein a series of cold cathode glow transfer tubes are employed for effecting functions in sequence.
  • Figure l of the drawings illustrates in diagrammatic form a cold cathode glow transfer tube which comprises the counting element for the present control circuit and to which is connected a source of direct current whereby the tube is energized.
  • Other terminals of the tube connect with a sinusoidal pulse source, the pulses of which are counted by the tube during a counting function, and still other terminals of the tube are connected electrically to means whereby the tube can be reset each time for a predetermined count following an operation thereof.
  • Said tube It is characterized by a single anode l1 and a plurality of cathodes 12, 13, 14, etc., ending with the last cathode 16.
  • cathode 16 In a ten-cathode tube cathode 16 would therefore be the last or the tenth cathode, whereas, in a twelve-cathode tube said cathode 16 would be the last or twelfth cathode.
  • the terminal C is electrically connected to cathode 16.
  • the cathodes In the construction of the tube the cathodes are arranged in a circle so that all will be relatively adjacent the common anode l1, and in order to transfer the glow from one cathode to the next in succession, the tube is provided with guides 18 and 20, the same being associated with each cathode.
  • the conductors 21 and 22 connect the guides respectively to the guide terminals 23 and 24. Accordingly, a current pulse applied to terminal 23 will be supplied in turn to all of the guides 18 and in a similar manner a current pulse applied to terminal 24 will be supplied to all of the guides 20.
  • the anode 11 is connected through resistance 25 and by a conductor 26 to the positive terminal 27 of a source of direct current, the voltage of which may be in the neighborhood of four hundred volts.
  • the negative terminal of said direct current source has connection with conductor 28 leading to terminal D.
  • terminals C and D will be understood as the description proceeds.
  • Each cathode is electrically connected to conductor 28 by a resistance circuit which includes a switch, as clearly shown in Figure 1.
  • cathode 12 is connected by the resistance 3t) and switch lever 31 to conductor 28, and in a similar manner cathode 13 is connected by resistance 32 and switch lever 33 to said conductor.
  • a circuit including resistance and a switch lever, is provided, with the exception of cathode 16, which is connected to conductor 28 by circuit 33, which includes resistance 39 only.
  • the conductor 40 having connection with terminal G, is associated with conductor 28 and is connected by conductors 41, 42, 43 and 44 to switch terminals 45, 46, 47 and 48, respectively.
  • the switch terminals 31, 33, 35 and 37, etc. have selective positions, in one of which they electrically connect with conductor 28 and in the other, they electrically connect with terminals 45, 46, etc., and with said conductor 40 leading to terminal G.
  • the terminal A is connected by means of conductors 50 and 52 to guide terminals 25 and 24, the connection including condensers 51 and 53. Both conductors and 52 are connected to a parallel circuit which includes rcsistances 54 and 5S. Said parallel circuit at a midpoint between the resistances is connected by conductor 56 to a potentiometer including the divider 5'7 and resistance 58, the latter being connected across the direct current source previously described. It will be noted that point er 57 is positioned at point 0 on the resistance 58 and thus the guides 13 and it? are normally maintained at a slightly higher potential than that applied to the cathodesv The resistance 53 is connected at 61) to conductor the terminal B also has connection with said conductor 28 through the conductor 61.
  • terminals A and B are connected to a source of alternating current of sinusoidal wave form
  • condensers tion with the connecting circuit function as a phase shift circuit to shift the phase of the voltages applied to the guide terminals 23 and 24,
  • Thecounting element of Figure 1 is activated by the application of periodic impulses to terminals D and Since switch element 33 of cathode 13 is theonly element connecting with terminal G the said periodic current impulses produce a glow, between anode 11 and cathode 13.
  • To initiate a counting function current pulses are applied to terminals A and B, the same having a uniform time interval such as may be produced by an alternating current of sinusoidal wave form.
  • the application of the first pulse to terminals A and B will energize the guides 18 and the glow is accordingly transferred from cathode 13 to the guide 18 associated therewith.
  • the guide 2%, associated with cathode 13 is energized and the glow is transferred from guide 13 to guide 20.
  • the glow is transferred from one cathode to the next and a counting function accordingly takes place.
  • the glow will have been transferred to cathode 16 representing the last cathode of the counting element.
  • current flow takes place through resistance 39 of conductor 38 and the drop in voltage across this resistance is exhibited at the terminals C and DJ
  • the voltage thus appearing across terminals C and D is used to transfer the counting operation to a second counting element which may represent the second stage in a sequencing series.
  • Figure 2 of the drawings is a wiring diagram illustrating in schematic forma control circuit for a two-stage counting system wherein each stage employs a counting element such as shown in Figure 1, having terminals A and B, C and D, and D and G.
  • the main function of the control circuit is to alternately render conductive a pair of electric discharge valves such as thyratrons whereby the counting function is shifted from one counting element to the next and so on, with the operation being repeated as long as the control circuit remains energized.
  • control circuit of Figure 2 is dis- 1 and 53 in combinaclosed in connection with two countingelements which are generally designated by numerals 7t) and 81 each element being constructed as explained in connection with Figure l and having operation to perform a counting of a predetermined number of electrical impulses such as may be applied to the terminals A and B of the elements.
  • the tliyratrons of Figure 2 are indicated by numerals '71 and 31 and an electric discharge valve of the double triode type is indicated by numerals 72 and 82.
  • the resistances 73 and 33 have electrical connection with the anodes of valves 71 and 31.
  • the anodes of the double triode valve 72, 82 are respectively connected to primary windings '74 and 84 of the transformers 75 and 85, each transformer having a pair of secondary windings 7c and 77 for transformer 75 and 86 and 37 for transformer 85.
  • the control circuit is energized by a source of direct current connected across conductors 911 and 91 with the positive terminal of the source connecting with conductor 9%.
  • the resistance 92 connects at its respective ends with conductors 911 and 91 and is accordingly in parallel relation with the direct current source, the said resistance and the pointer 93 providing a potentiometer which may be adjusted to vary the potential applied to the pair of thyratrons 71 and 81.
  • the conductor 94 connects with the pointer 13 and the resistances 73 and 83 in turn have'con nection with said conductor 94 and with the anode 95 of valve '71 and anode 96 of valve $1.
  • the cathodes '97 and 98 of said valves are joined by conductor )9 which is in turn connected to conductor 91 through resistance 1% and the condenser 101 in parallel circuit relation with the resistance.
  • the control grid 75 of valve '71 is connected by conductor 162 to the terminal C of the counting element 713, whereas the control grid 38 of valve 51 is connected by conductor 163 to terminal C of the counting element Conductor $9, having connection with the positive terminal of the direct current source, leads to the cathodes 1M and 105 of the valve 7.2, 82.
  • the anodes 1115 and 1&7 thereof connect with the primary win-dings 74 and
  • the control grid 103 of triode 72 is connected by conductor 10) to resistance 33, who ear;
  • control grid 111 of triode 32 is connected by conductor 111 to resistance 73.
  • the conductivity of triode 72 is controlled by that of thyratron 71, whereas the conductivity of triod-e 82 is controlled by that of thyratron 31.
  • the primary windings 74- and 84 of the transformers 75 and 35 connect with one terminal of secondary winding 112 of transformer 113.
  • Said transformer 113 is provided with primary winding 114, the terminals of which are suitably connected to a source of sixty cycle alternating current of approximately one hundred and ten volts.
  • the opposite terminal of secondary Winding 112 is connected by conductor 115 to the cathodes 104 and 1135 of the triodes '72 and 82.
  • the primary windings 74 and 84 each have associated therewith a pair of secondary windings, as clearly shown in Figure 2.
  • Secondary winding 76 is connected by conductors 116 and 117 to terminals D, G, respectively of the counting element 71?. in a similar manner secondary winding 86 is connected by conductors 118 and 119 to the terminals D, G, respectively of counting element St).
  • Secondary winding '77 is connected through conductors 120 and 121 to terminals A, B of the counting element 80.
  • Secondary winding 37 is connected by the conductors 122 and 123 to the terminals A, B of the counting element 70.
  • Conductor 124 connects conductor 91 with terminal D of counting element 79, whereas conductor 125 in a similar manner connects conductor 91 to terminal D of counting element St).
  • a bypass circuit is provided in connection with conductors 116 and 117, the same including the direct current battery 126 and switch 127.
  • Conductor 117 and thus terminal G of counting element 70 can be connected to the positive end of the battery 126 through switch 127.
  • the negative end of the battery has connection with conductor 116.
  • Conductor 122 leading to terminal A of the counting element 70, is provided with a main switch 128 which controls the operation of the control circuit and the starting of the counting functions of the elements 70 and 80. It will be observed that the main switch 128 has a fixed relation through member 130 with switch 127 so that when one switch is closed the other is positively held open.
  • capacitor 131 When 81 is rendered conductive by the positive pulse applied to grid 33, the positive end of capacitor 131 is electrically connected with the cathode of 71 so that the anode 95 of said tube is thus made negative with respect to its cathode which extinguishes said tube.
  • triode 7.2 will be held nonconductive, whereas, triode 82 will be conducting since there is no voltage appearing across the resistance Transformer 35" will therefore be passing current and an alternating voltage will be induced in its seconda y winding: 3'5 87.
  • the current pulses generated in the secondary winding 86 are applied to terminals D, G of the counting element 80 and a periodic glow is thus maintained in said counting element from anode to the patricular cathode which has been selected for starting the counting function, all depending on the particular count desired of this element.
  • the current pulses generated in secondary winding 87 will be applied to terminals A and B of counting element 70 and said element is thus operative to effect a counting function.
  • the number pulses to be counted by element 7i) will, of course, depend on the cathode selected for starting the count.
  • the glow has been transferred to the last cathode of the counting element 70 the voltage caused to appear across terminals C, D thereof will apply a positive pulse to thyratron 7 i, causing it to become conductive.
  • the same action involving the capacitor 131 takes place as before and thyratron 81 is immediately extinguished.
  • t ith tube 71 conducting a voltage drop now appears across '73 and there is no voltage across 83.
  • This switch in the conductivity of the thyratrons effects a switch in the conductivity of the triodes so that 32 is extinguished and triode 72 is rendered conductive.
  • Transformer '75 accordingly pass-cs current and pulses are induced in its secondary windings.
  • the current pulses induced in winding 76 are applied to terminals D, G of counting element 70 to reset this element in a manner as previously explained.
  • the current pulses induced in winding 77 are applied to terminals A and B of counting element 80 and this element now becomes operative to effect a counting function wherein each pulse applied to terminals A and B will be counted by a transfer of the glow from the starting cathode to the last cathode, whereupon a signal voltage is produced across its terminals C, D.
  • this signal voltage applies a positive pulse to the grid 88 and thyratron 81 is again rendered conductive, thus completing the cycle of operations.
  • the counting functions will alternate between elements 70 and and as long as the initiating switch 128 is maintained in closed position. If the switch is thrown to off position while counter St) is in operation the counting by this element will continue to the end of the count, after which the control circuit will become inoperative. Thus the heat time is never cut short. However, should switch 128 be opened during the operation of counting element 79 for the cool time, the counting function will stop immediately since the pulses to terminals A and B are discontinued. With the opening of 128 switch 127 is automatically closed and counting element 70 is accordingly reset by the current supplied by battery 116.
  • the timing system of Figure 2 will operate in a manner to give accurate timing functions and such a system will find extensive utility as a pulsation timer or as a heatcool timer for seam Welding.
  • the counting element 80 would function to time the duration of the welding heat and timing element 70 would operate to time the duration of the cooling periods between welds.
  • the system could be amplified by adding additional stages, each stage incorporating a counting element having the characteristics and mode of operation as described.
  • terminals E, F are substituted for terminals D, G.
  • Said terminals have connection respectively with conductors 132 and 133 which are connected by the current limiting resistor 13 3.
  • Conductor 132 leads to the grid 135 of the electric discharge tube 136.
  • the anode 137 of said tube is connected to conductor 40 and through current limiting resistor 138 connection is made with conductor 28.
  • the cathode 140 is joined by conductor 41 to the positive end 142 of the battery 143, the negative end of which connects with conductor 133.
  • a second battery is employed, namely, 144, the same being joined by conductor 145 to terminal 142 and by conductor 146 to conductor 28.
  • tube 138 When the resetting pulses are applied to terminals E and F in the manner as described with respect to terminals D, G, it will be understood that tube 138 will be rendered conductive and will thus transmit amplified current pulses to maintain the glow between the anode 11 and the particular cathode selected for initiating the counting function. When the pulses to terminals E and F are terminated the tube 138 is held in a nonconductive state since grid 135 is maintained at a potential which is more negative than its cathode 140.
  • Figures 3 and 3A are wiring diagrams schematically disclosing a commercial form of counting system wherein a pair of the counting elements of Figure 1 are al ternately controlled as regards their counting function by means of a control circuit.
  • Figure 3 is analogous in all respects to the control circuit shown in Figure 2 and similar elements are identified by related reference numerals.
  • the thyratrons are numbered 271 and 281 and the resistors connecting with the respective anodes of the thyratrons are identified by 273 and 283.
  • the conductivity of the thyratrons controls the conductivity of the triodes 272 and 282.
  • the transformer 275 is associated with triode 272 and transformer 285 is associated with triode 282.
  • Each transformer has a pair of secondary windings which are '2 connected by suitable conductors to certain terminals of the counting elements 270 and 28?; shown in Figure 3A.
  • switch 328 has a fixed relation with switch 327 through member 330 so that when one is open the other is closed. With the opening of switch 328, if counting element 289 is in operation, it will continue until the end of the counting function and thus the heat time is never cut short. However. it counting element 270 for the cool time is in operation when switch 32% is opened, its counting function is ended immediately. Switch 327 is simultaneously closed and the current source 316 is rendered operative for resetting the counting element.
  • each element consists of a cold cathode glow transfer tube embodying the same circuit elements and circuit connections as i lustrated in connection with the tube of Figure 1.
  • Each counting element is therefore provided with terminals A, B; C, D; and D. G.
  • the said terminals A, B are connected with suitable means for supplying current pulses to the elements to be counted thereby.
  • a signal voltage is produced across terminal C, D to signify the end of the counting operation of its respective element and the terminals D, G connect with the resetting means of each counting element so that the element can be reset by a resetting pulse applied across said terminals.
  • the counting elements are electrically connected by an improved control circuit essentially consisting of the cold cathode gas tubes 414, 415. 416 and 417 and the cathode resistors 41%, 419, 420 and 421, respectively.
  • Each of the cold cathode gas tubes consists of an anode. a cathode, and a control grid.
  • the anode 422 is connected to the conductor 423, comprising the positive terminal of the direct currentsource, which is provided for energizing the said gas tubes.
  • the conductor 424 constitutes the negative terminal of said power source, and the cathode 425 of the tube 4-14 has electrical connection through the cathode resistor 418 with said negative conductor 424.
  • said conductor being additionallyconnected through 42a to terminal D of the counter 410.
  • Terminal C of said counter is connected through conductor 427, condenser 428, and switch 439 with the grid 431 of tube 414.
  • the counting element 4-11 is similarly connected through its terminals C, D to cold cathode gas tube 415, the anode 432 thereof having connection to the positive conductor 423, the cathode 433 thereof connecting through resistor 419 with negative conductor 424 and the grid 434 having connection through conductor 435 to terminal C.
  • the terminal D is connected through conductor 436 to 424.
  • Similar elements electrically connect the terminals C and D of counting element 412 with tube 416 and likewise counting element 413 is connected with tube 417. With respect to this last tube,
  • the invention provides means for switching the conductivity from one cold cathode tube to the next. For example, should tube 414 be conducting and should tube 415 be rendered conductive, then tube 414 is immediately snuffed out by the capacitance having electrical connection with the cathode circuits of the tubes.
  • the conductor 4-48 electrically connects the four cathodes of the tubes respectively and in between each tube there is interposed a condenser 450, the operation of which is such that only one tube may be conductive at a time. Such operation will be presently described in detail.
  • the vacuum tubes are connected in parallel across conductors 46% and 461, the said conductors constituting the terminals of the secondary winding 462 of the power transformer 453 having primary winding 464.
  • the terminals of winding and are connected to any suitable source of alternating current identified by leads L and L With respect to vacuum tube 455, it will be seen that its anode 465 thereof is connected to primary winding 45:; of transformer 451, which windingis in turn connected to conductor 469.
  • the cathode 467 of said tube 455 is connected to conductor 451, whereas the grid 1 tliereo. has electrical connection through conductor 57% to cathode 443 of the gas tube 417, said connection being made between the cathode and resistor 421 and said tube.
  • the vacuum tube 256 is connected across the conductors 460 and 461, with the grid being electrically connected by conductor 4-75 to the cathode 425 of tube 414 at a point between the tube and the cathode resistor 418.
  • a source of biasing potential in the form of a direct current battery 43% has its positive terminal connected to conductor 461 with its negative terminal being electrically connected through conductor 487 to the negative conductor 424.
  • transformer 455. this transformer is provided with a plurality of secondary windings.
  • One winding 4-238 is connected through conductors 4% with terminal A, B of element 410.
  • the other secondary windings thereof have connection with the reset terminais D, G of counting element 411, 412 and 413, respectivel Transformer 452 has two secondary windings, winding identified by numeral 491 having electrical connection with the reset terminals of counting element 43th, with the other secondary winding, namely, 492;, of said transformer having electrical connection with terminals A, B of counting element 411.
  • Transformer is provided with one secondary winding, namely, 4-5 3, which has electrical connection with terminals A, B of counting element 412 and in a similar manner transformer 454 has one secondary winding, namely, 494, which electrically connects with terminals A, B of counting element 413.
  • the gas tube 417 With switch 447 in the position as shown, the gas tube 417 is rendered conductive and the same will pass current from the positive terminal to the negative terminal of the direct current power source. Current flow as permitted by the conductivity of this gas tube will produce a voltage across the cathode resistor 421. From an examination of the cathode to grid circuit of vacuum tube 455, it will be seen that battery 486 supplies a negative bias to the grid 4T8 thereof through resistor 421 and conductor 47%. This same bias is supplied to the grid of vacuum tube 456', 457 and 458 through the cathode resistors 418, 419 and 420, and respective grid conductors. These tubes are therefore normally maintained in a nonconductive state by this negative biasing Voltage.
  • the voltage across resistor 421 is suflicient to bring the grid of vacuum tube 455 to a positive potential with respect to its cathode and the vacuum tube accordingly conducts to pass alternating current pulses from the power supply L L through the primary winding 466 of transformer 451.
  • One secondary Winding, namely, 483, of this transformer is connected to terminals A, B of counter 41% and said counter accordingly begins a counting operation to count the pulses thus supplied thereto by transferring the glow from cathode to cathode of said counter, all as explained in connection with Figure 1.
  • a voltage pulse is applied to terminals C, D of said counting element 410 and the counting operation is repeated.
  • the timing system of Figure 4 is characterized by a series of cold cathode glow transfer tubes which constitute counting elements and which are electrically connected to a control circuit for switching from one counting element to the next as each element completes its counting function.
  • the circuit elements for the timing system are completed by a pulse transmitting or commutating circuit which is electrically associated with the control circuit.
  • the counting elements 411, 412 and 413 may control the squeeze time, the weld time, and the hold time, respectively, of a welding operation, for example, with the counting element 410 controlling the off time.
  • the timing system is so constructed and arranged that an accurate count is secured for each counting operation of the elements 411, 412 and 413 and if the said operations are repeated the counting element 410 will produce a full count for the offtime period, all as determined by the presetting of the elements. Also, it will be understood that upon opening of switch 430 the timing system will continue in operation until gas tube 417 is rendered conductive, which energizes vacuum tube 455, controlling the oflti-me counting element 410. For timing more than four operations, it is only necessary to add additional stages to the system as shown in Figure 4, with each stage incorporating a counting element, a gas tube and a vacuum tube, all having the circuit connections and mode of operation as described.
  • a pulsation timer the combination with a first counting element, a second counting element, and an electric source providing periodic current pulses to be counted by the elements, of 'a control circuit for rendering the counting elements alternately operative for performing a counting function, said control circuit providing first and second electric translating means having connection with the electric source for transmitting the periodic current pulses to the elements, the first translating means transmitting to the second element current pulses to be counted thereby and transmitting to the first element current pulses for resetting the element, the second translating means transmitting to the first element current pulses to be counted thereby and transmitting to the second element current pulses for resetting the element, an electric discharge device for each electric translating means for controlling by its conductivity the energization of its particular translating means, said discharge devices being electrically connected in a manner whereby only one is conductive at a time, and means electrically connecting the counting elements with the discharge devices in a selective manner, whereby each element at the completion of its counting function supplies a signal voltage to a
  • a control circuit for rendering the counting elements alternately operative for performing a counting function, said control circuit providing first and second transformers each including a pair of secondary windings inductively connecting with the electric source for supplying the periodic current pulses to the elements, the first transformer supplying to the second element current pulses to be counted thereby and supplying to the first element current pulses for resetting the element, the second transformer supplying to the first element current pulses to be counted thereby and supplying to the second element current pulses for resetting the element, an electric discharge device for each transformer for controlling by its conductivity current flow through its particular transformer, circuit means electrically connecting said discharge devices in a manner whereby only one is conductive at a time, and other circuit means electrically connecting the counting elements with the discharge devices in a selective manner
  • a control circuit for rendering the counting elements alternately operative for performing a counting function, said control circuit providing first and second transformers each including a pair of secondary windings inductively connecting with the electric source for supplying the periodic current pulses to the elements, the first transformer supplying to the second element current pulses to be counted thereby and supplying to the first element current pulses for resetting the element, the second trans former supplying to the first element current pulses to be counted thereby and supplying to the second element current pulses for resetting the element, an electric discharge device for each transformer for controlling by its con ductivity current flow through its particular transformer, each electric discharge device including an anode, a cathode, and a control grid, circuit means connecting said discharge devices in a manner whereby the conductivity of one
  • apparatus for counting electric current pulses by means of electronic counting elements of the type employing an anode and a plurality of cathodes with guide terminals located between the cathodes, whereby the electric pulses energize the cathodes in succession and can therefore be counted of a control circuit provided by the apparatus for controlling the counting function of the elements, said control circuit providing a plurality of translating means equal in number to the counting elements and adapted to have connection with an electric current source producing periodic current pulses, at least one of said translating means supplying to the guide terminals of one counting element current pulses to be counted thereby and supplying to the resetting terminals of another of said elements current pulses for resetting purposes, an electric discharge device for each translating means and having connection therewith for controlling by its conductivity the energization of its particular translating means, each discharge device including an anode, a cathode and a control grid, and circuit means electrically connecting each counting element with the control grid of a certain discharge
  • each translating means includes a transformer having a primary winding connected to the electric current source and having two secondary windings, one secondary winding thereof supplying to the guide terminals of said one counting element the current pulses to be counted thereby and the other secondary winding supplying to the said re setting terminals of another of said elements the current pulses for resetting purposes, wherein the circuit means electrically connects the last cathode of each counting element with the control grid of a certain discharge device, and additionally including resistance in the circuit of the last cathode of each element, whereby the signal voltage produced by each counting element the end its counting function is caused by the voltage drop acro s the said resistance as a result of current flow taking place upon energization of the last cathode thereof.
  • apparatus for counting electric current pulses by means of electric counting ments of the type employing an anode and a plurality of cathodes with guideterminals located between the cathodes, whereby the electric pulses energize the cathodes in succession and can therefore be counted
  • said counting elements each having input terminals, output terminals and resetting terminals, of a control circuit electrically connecting the elements in tandem relation and which controls the operation of the elements in sequence
  • said circuit including a source of electrical energy, an electric discharge valve for each counting element connected across said source, circuit means connecting the output terminals of each counting element with the grid and cathode of its respective discharge valve, whereby the signal voltage produced by each element at the termination of a counting operation thereof is caused to render its discharge valve conductive
  • a commutating circuit including an electric discharge valve for each valve of the control circuit, means in electrical connection with the first valve of the commutating circuit for supplying the input terminals of the first counting element with electric pulses to be counte
  • said counting elements each having input terminals connecting with the guide terminals of the element, output terminals across which there is produced a signal voltage at the completion of the counting operation thereof, and resetting terminals to which there is supplied a current pulse for resetting purposes, of a control circuit electrically connecting the elements in tandem relation and which controls the operation of the elements in sequence, said circuit including a source of direct current, a normally non-conductive electrical discharge valve for each count ing element connected across said source, circuit means connecting the output terminals of each counting element with the grid and cathode of its respective discharge valve, whereby the signal voltage produced by each counting element at the end of its counting operation will render its discharge valve conductive, a commutating circuit including a normally

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US361608A 1953-06-15 1953-06-15 Sequential pulsation timer Expired - Lifetime US2842315A (en)

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BE529639T BE529639A (enrdf_load_stackoverflow) 1953-06-15
US361608A US2842315A (en) 1953-06-15 1953-06-15 Sequential pulsation timer
GB1757554A GB753403A (en) 1953-06-15 1954-06-15 Improvements in electrical circuits for timing a sequence of operations

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US361608A US2842315A (en) 1953-06-15 1953-06-15 Sequential pulsation timer

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BE (1) BE529639A (enrdf_load_stackoverflow)
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US2521789A (en) * 1948-02-25 1950-09-12 Rca Corp Frequency control by electronic counter chains
US2547008A (en) * 1947-11-13 1951-04-03 Int Standard Electric Corp Electric pulse generator
US2740921A (en) * 1950-12-12 1956-04-03 Int Standard Electric Corp Electric discharge tubes and circuits therefor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2250202A (en) * 1937-08-17 1941-07-22 Gen Electric Control device for electric translating apparatus
US2521774A (en) * 1947-03-21 1950-09-12 Rca Corp Predetermined counter
US2547008A (en) * 1947-11-13 1951-04-03 Int Standard Electric Corp Electric pulse generator
US2521789A (en) * 1948-02-25 1950-09-12 Rca Corp Frequency control by electronic counter chains
US2740921A (en) * 1950-12-12 1956-04-03 Int Standard Electric Corp Electric discharge tubes and circuits therefor

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GB753403A (en) 1956-07-25
BE529639A (enrdf_load_stackoverflow)

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