US2420751A - Phase calculating device - Google Patents

Phase calculating device Download PDF

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US2420751A
US2420751A US468845A US46884542A US2420751A US 2420751 A US2420751 A US 2420751A US 468845 A US468845 A US 468845A US 46884542 A US46884542 A US 46884542A US 2420751 A US2420751 A US 2420751A
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relay
selector
arm
contact
occurrence
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Lenzlinger Werner
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/22—Arrangements for performing computing operations, e.g. operational amplifiers for evaluating trigonometric functions; for conversion of co-ordinates; for computations involving vector quantities
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/40—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using contact-making devices, e.g. electromagnetic relay

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  • the present invention relates to an apparatus designed to determine at any ⁇ given moment the state oi at least one periodically recurring occurrence, assuming that the duration oi the period and the starting time of the periodical occurrence are known. This determination is achieved through calculation of a number characterising the state inquired into; the calculation consists oi consecutive addition and subtraction of numbers characterising the starting moment of the occurrence and the time at which it is desired to determine the state of the said occurrence.
  • the calculating process is automatically carried out by switching step by step at least one indicating organ in dependence on the position of other organs set from hand in accordance with the data supplied.
  • the apparatus is characterised in such a manner that the extent of the shifting of the indicating organ corresponds to the complement oi the number cliaracterising the state it is desired to determineto a number xed in advance. Thus is obtained. the propulsion in one single direction of the indicating organ for carrying out subtractions as well as additions.
  • the indicating organ is inscribed in such a way that the state of the periodically recurring occurrence it is desired to determine can be ascertained by direct reading.
  • the numbers serving as basis for the calculation, characterising the starting time of the periodically recurring occurrence and the time at which it is desired to ascertain the state of the said occurrence, are so-called characteristics i. e., a kind of code numbers, co-ordinated to the data, i. e., points of time, given.
  • characteristics i. e., a kind of code numbers, co-ordinated to the data, i. e., points of time, given.
  • the signification of these characteristics shall be explained by way of example before describing fully a performed model of the apparatus.
  • the periodical occurrence contains a certain number of full days. Assuming the start of the occurrence to fall in a given day To, the number p--characterising the state it is desired to ascertain for any one day Tx--is given by the formula:
  • the calculation is more diiiicult when the period of time which has elapsed from the start of the occurrence includes any arbitrary number of days.
  • the number p characterizing the state of the occurrence on any one day Tx will be found by using the formula:
  • the abovementioned numbers 8, 13, 21, 5 and 13 are selected as characteristics for all dates falling on the months of February, March, April, May and June.
  • the months characteristic can thus be dened as the number resulting from the number of days between 1st J anuary and the rst day of each particular monthafter subtraction of the number of the days ineluded in the full periods.
  • These characteristics can be calculated in advance, not only for the months, but also for the days of the month, for the years, decades, centuries, etc.
  • the January characteristic is zero where zero time falls on 1st January, 0 oclock.
  • the 29th Februaiy has, of course, to be specially considered.
  • the characteristic for March is no longer 13, but 14.
  • the characteristics of the months March to December inclusive ln leap-years exceed by one unit each the characteristics of the same months for ordinary years.
  • the result remains naturally the same if the characteristics for January and February are reduced by one unit each instead. This is connected with a slight simplification in the practical design of the apparatus, since leap-years have to be paid special consideration in the case of two monthly characteristics only, instead of ten.
  • the yearly units, decades and centuries, etc. presents no particular diiculties.
  • the characteristic for the yearly unit zero is fixed at zero; it follows that the characteristic for the year 1 will be 20, since 365-15.23+20.
  • the leapyears must, of course, be taken into account here too, duly taking in consideration the fact that certain decades include 2 leap-years, and others 3 leap-years. If we split up any number of indieating a year into units and decades the matter of the leap-yea-rs can be accurately circumscribed, since the odd decades contain two, and the even decades three leap-years each.
  • the following tables can now be evolved for the characteristics of the yearly units and decades to be determined in advance:
  • the value p characterising the state inquired into is represented by the diierence between two values.
  • the indicating organs of the apparatus designed to carri7 out the calculating process should be switched step by step in one single direction, the indicating organ will be shifted to the extent corresponding to the complement p of the value p to a fixed number K, not to the extent corre- Instead of the spending to the value p itself.
  • Formula 1 p TzT0
  • K may be represented by any positive number. It is advisable in practice to select K as small as possible so as to limit the pitch range. In view, however, ci the necessity of complying with the requirement of switching in one direction the value selected for K may not be smaller than the greatest possible characteristic. This means that it will be advisable to equal K to the period duration.
  • the indicating organ is not inscribed with the values of p', but with those or" p so as to find the result p by direct reading. Since the registering organ is switched forward in one direction for the two data given, it is possible to use, for building up the apparatus, elements of automatic telephony, such as relays and step-by-step switch selectors.
  • the enclosed drawing shows a constructional example of execution of the apparatus according to the present invention, as described below.
  • Fig. l serves to explain the calculating process.
  • Fig. 2 is a View from above of a constructional example of an apparatus according to the invention.
  • Fig. 3 is a schematical cross-section of this constructional example along the line III-III of Fig. 2.
  • Fig. 4 shows the reading scales enlarged.
  • Fig. 5 is a diagram of connection of the constructional example.
  • the apparatus described below serves for determining simultaneously the state of three different periodical occurrences.
  • the period of the nrst occurrence is 23 days, of the second one-28 days, and of the third one- 33 days.
  • the apparatus has a range suihcient to investigate these periodical occurrences within the time interval between lst January 1700 and 31st December 1999.
  • the handfoperated switches are designed as rotary step switches, each step being connected by wire-in a manner partly to be seen in Fig. 5-With the contact plate of a stepby-step switching rotary selector D acting as guiding selector.
  • Two push-keys Tal and Ta2, respectively, are used for starting the apparatus for registering the iirst and second sum, respectively, of the difference p.
  • the apparatus can be set back to zero position by means of key Ta3.
  • a signal lamp BL lights up during the setting and registering process.
  • the reading device (Fig. 4) is arranged besides the switch board provided with switch buttons, lamp and keys.
  • the scales M, W and I are tted on the endless strips 5 (Fig. 2) which are switched forward step by step in the direction indicated by the arrow P.
  • These strips are inscribed with numbers indicating the period days of the different occurronces. Positive and negative half of the periods are coloured differently so as to be distinguished more clearly.
  • each positive part is provided with black rims.
  • the date scale contains the daily dates 1-31 and is fixed.
  • the day scale contains the names of the week-days and is made to slide to and fro (arrow PI) so as to be brought to coincide with the date scale according to the date to be controlled.
  • a table e. g., Written at the place I8 below scales, may be used.
  • a calendar for the running and yperhaps of the neighbouring years is quite Sunicient.
  • the strips 5, preferably 16 mm. (1%6 in.) film strips, are stretched on two rollers 6 and 1 each (Fig. 3); the one, 6, is geared and inuenced by a step-by-step switched electro-magnet 8.
  • This electro-magnet controls an armature 9 with an arm Iil carrying a pawl I I and bringing this latter into engagement with a gear wheel I2.
  • This gear wheel I2 is rigidly coupled with the roll 6.
  • a cam disc I5 actuated by the roll 6 over a reduction gear I3, I4 controls an alternating contact I6.
  • the transmission ratio of the gear is such that the cam disc accomplishes a full revolution when the strip is switched forward for as many steps as correspond to a period.
  • each strip must be such that it corresponds to an entire multiple of periods. For the strip M this revolution corresponds to 23, for the strip W-to 28, and for the strip I-to 33 steps.
  • the contacts i6 controlled by the cam discs serve to bring automatically the strips into position of rest. This is characterised by the fact that the gure (number) l of each strip is standing at the same height as the ligure 1 of the date scale.
  • the armature 9 of each step-by-step switching magnet controls moreover a working contact I'I whose function shall be explained later.
  • Each strip must be as long as to run over its whole length when switched forward over so many steps as one or several complete periods contain.
  • each strip is at least as long as the distance of so many scale-divisions as the corresponding period, respectively several complete periods, contain. Of course this entire number of periods must be at least so large as to allow each strip to cover at least its scale window.
  • the strips M, W and I have different lengths generally, and consequently request diierent axle-distances of the different roll-couples 6, 7.
  • Fig. 5 all relay contacts are, in the conventional manner, in the resting, unexcitated position.
  • the hand-operated switches and 2 are each provided with three contact rows TI to TIII, and MI to MITI, respectively; the handoperated switches 3 and 4-each with four contact rows ZI to ZIV, and EI to EIV, respectively.
  • the contact rows I to III of each handoperated switch are connected by wire with the contact rows swept by the selector arms dI, dII, dIII of the rotary selector D acting as guiding selector.
  • Fig. 5 only those wire connections are shown that are required for demonstrating one example of calculation.
  • a twelve step controller switch Si with arms stI to stVIII also fullls a few switching functions which shall be explained later on with the help of an example of calculation.
  • Several relays C, F, U, V, Pm, Pw and Pi serve furthermore for establishing various circuits.
  • the rst step of the hand-operated switch Z coincides with the 170th decade decade 179 step I3l) to decade 199.
  • the rst step of the hand-operated switch E corresponds to the year zero the th t0 the 9th year unit.
  • Table IV contains in the columns step the respective contact number (step) upon which each of the switches T, M, Z, E has to be set by hand.
  • the numbers in the columns dI, dII and dIII are deduced from the above-mentioned characteristics (characteristical numbers) and mark the wire-connections of the hand-operated switches with those contacts of the guiding selector, which cause the switching-electromagnets M, W and I to stop regarding the initial date of 8th November 1738 respectively to start regarding the nal date of 6th February 1793.
  • the wire-connection-numbers in the columns dI, dII and dIII are deducted from the abovementioned characteristics as follows: Each days characteristic must be reduced by one unit, whereas five units are added to each monthly characteristic for allowing the practical fabrication of the wire-connections to be realizable. For 8th November 1738, i. e., the days characteristic 8 is to be represented by the 7th selectors contact, while to the months characteristic 5 corresponds the 19th selectors contact for a period of 23 days. For 6th February 1793 the characteristics undergo the same translations; 6 to 5, resp. 8 t0 13, etc.
  • each months characteristic may be one unit larger or smaller for leap years with re'- gard to normal years; thus each contact of the hand-operated switch M is to he connected al ternatively to one or the other of two consecutive contacts oi the guide-selector, over switches Si, S2, S3
  • the relay C responds:
  • the controller is switched one step and takes up position l.
  • the contact st switches off the relay F, which, on his part, disconnects St by means of f2.
  • the circuit (i) is interrupted twice. ⁇
  • the coil D of the guide selector is now excited over tk (4) Earth, contacts c3, f4, controller arm StVIII in position l, contact a6, coil D, battery.
  • the coil D attracts its armature and keeps this one by its own contact d2 and the selector arins dI to dV take up position 0.
  • the armature contact dl excites the relay U:
  • the relay F is excited:
  • the guiding selector D carries out one coniplete revolution. After it has reached the first step, the relay Pw is excited:
  • controller arm stII in potin 2 the hand-operated switch iii position Il, selector arm dII in position I, winding I of the relay Pw, re sistance Wz'3, battery. f
  • the relay Pw keeps itself actuated in the cir cuit I3.
  • the circuit 1 is interrupted and consequently the strip having been actuated by the switching magnet (17) Earth, controller arm stIII in position 2,
  • the relay Pm reverses its contact pm ⁇ 2 and keeps itself actuated over the circuit I2.
  • the strip having been actuated by the magnet M is stopped.
  • the selector D goes on rotating and th'e strip actuated by the magnet I is alone switched forward until the arms dI to dV reach the twelfth step; the relay Pz' then responds:
  • the relay Pz' stays in the circuit I4 and reverses its contact pz ⁇ 2, thus stopping the strip I.
  • the selector goes on rotating until its arms dI to dV reach step 35.
  • the controller is switched forward in the manner already described and comes into position 3.
  • the selector arm dV, arriving in position switches off the three relays Pm, Pw and Pz'.
  • the third revolution of the selector three processes similar to those just described take place.
  • With the selector in position I the relay Pz' is again excited over the controller arm stI in position 3, the arm ZI of the handoperated switch in position 4 and the selector arm dIII.
  • the strip corresponding to th'e magnet I has just been going forward one step.
  • the relays Pm and Pw respond simultaneously. Only on completion of the third revolution is the controller brought into position 4 by the arm (ZIV. In position the arm dV causes the relays Pm, Pw and Pz to drop in the manner already described.y The selector starts a new revolution and, in position I, the relay Pm, over the arms EIII in position I, is made to respond.
  • the strip M was thus shifted 7-l-10l-9+1 steps in the direction of the arrow P4.
  • the aggregate characteristic for the starting day of the periodical occurrence KOM is therefore found to be:
  • the hand-operated switches I to 4 shall now be set according to the date 6th February 1793.
  • the key Ta2 is depressed, the relay F excited:
  • the controller is brought into position 6.
  • the forward switching circuit 4 for the selector is re-established by the arm stVIII and the selector D carries out four new consecutive revolutions. Since the controller arm stVII is in position 6 there are no forward switching circuits for the magnet coils M, W and I, st that the strips stand still. As soon as the selector has completed five steps, the three relays Pm, Pw, Pz' which stay over their own contacts @m3, pw3, pz'3 in the circuits I2, I3 and I4 are simultaneously excited.
  • the exciting circuits ⁇ of these relays pass through the controller arms stIII, stII and stI, the arms TIII, TII and TI of the hand-operated switches, newly set, and the selector arms dI, dII and dIII.
  • the selector goes on rotating and the three magnet coils M, W and I now receive current impulses over the circuits:
  • controller arm stVII in position 6 contacts pwZ, c4 and u4, magnet coil W, battery.
  • the selector D goes on rotating until the arm dIV reaches the position 23.
  • the following circuit is now established:
  • the windings I and II of the relays Pm, Pw and Pi are Wound in opposite senses.
  • the relay Pm is thrown OIT when its winding II is excited.
  • By setting back the contact pmZ the impulse circuit 20 for the magnet coil M is interrupted and the corresponding strip stopped.
  • the selector goes on rotating until the arm ZIV reaches the position 28, whereby current is brought to flow in the winding II of the relay Pw:
  • the relay Pw is also thrown off and the impulse circuit 2
  • the excitation of the relay Pz' is cut off when the selector arm dIV reaches the position 33.
  • the arm dIV causes the controller to be switched forward into position 'I and, when the revolution is completed, the arm dI reaches the position I I.
  • the arm ZIV was brought into position
  • the arm dI gets into position I3.
  • the contact si now causes the relay Pm to respond.
  • the arm cZIV reaches one after the other the positions 23, 28 and 33, so that the armatures of the relays Pm, Pw and Pi drop one after the other.
  • the arm dIV brings the controller into position B; on reaching the position the arm cZII causes the relay Pw to be excited.
  • the impulse circuit for the magnet coil M is established, and the corresponding strip again switched forward.
  • the strips M, W and I do not any longer carry out the number of steps marked on the contact plate by these hand-operated switches, but in each case a number of steps equal to the difference between the numbers marked and 23, 28 and 33 respectively.
  • the numbers of steps carried out by the strips in the course of the second calculating process are therefore the complements to 23, 28 and 33, respectively, of the 5 numbers indicated by the selector arms. This result is made possible by the arrangement of the controller arms stIV, stVII, of the selector arm dIV, and or" the relays Pm, Pw and Pz' wound as differential relays.
  • the strip M was therefore shifted:
  • the strip W is scaled so, that the strip number 24 communicates with the xed number 6 of the date scale. From their difference 24-6-:18 results the wanted number rif-18, characterising the state y or W inquired into.
  • the shifting of the strip I in the course of the second calculating process amounts to:
  • the forward switching coil M is fed with current over:
  • the relay F responds and the contact ,f2 causes the controller to be switched forward into posi- 16 tion H.
  • a circuit is now established for the relay U over the contact w0:
  • the coil W is fed with current:
  • the coil W and the relay U act as relay breakers until the strip actuated by the magnet W has reached a position corresponding to the initial position of the strip M.
  • the contact wU is then reversed and the relay F again excited:
  • the controller is switched forward into position l2 and the relay U excited:
  • the coil I is fed With current over:
  • the controller cornes into position D and the apparatus is ready to resume work.
  • the selector D remains unaiected.
  • the relay V responds and holds up its armature in attracted position as long as the relay U is active, i. e., as long as the Contact u2 excites the Winding VI by impulses.
  • the contact vl causes the signal lamp BL to light up. This warns the operator that he shall not perform any manipulation.
  • the strips and the controller are stopped the winding I of the relay V remains Without current, thus causing the signal lamp BL to go out.
  • the contact f2 switches in the coil St and the controller comes into the next position.
  • the contact st switches orf the relay F; this latter and the coil St act together as circuit-breakers and the controller is switched forward step by step until it reaches position l0.
  • the coils M, W and I are then set to work one after the other in the manner previously described and the corresponding strips are brought back into their initial position. Simultaneously with the dropping of the relay C the selector D is stopped through the opening of the contact c3. Current feeding to the coil D of the selector is only resumed When the controller is set to position 0:
  • the contact dl switches in the relay U which together with the coil D acts as relay breaker in such a manner that the selector D is brought into position 35.
  • the calculating process can now be resumed.
  • the present invention is not limited to the one constructional example described. Other forms of execution are conceivable, more particularly as far as the inscriptions on the scales are concerned. Instead of using period days the strips could be inscribed with any other value characterising the state y of an occurrence p under consideration (Fig. 1), e. g., hours, miles or otherunits of time resp. length. If, for instanca, for any strip, the state of an occurrence is a known function of the characterising value,
  • the chief function of the present inventions apparatus is the automatical calculation of the value p characterising th estate whereas the additional subjective work of thinking is quite unessential even if the state of the periodical oc.- currence should be read from a table or graphical diagram separated from the shifted strips.
  • Apparatus for the ⁇ determination* of a. momentary status ofk any periodical occurrence, the duration period and, the starting moment of which are known comprising, in combination, a plurality of manually operated setting organs adapted to be moved to one set ofpositions indieating ⁇ said starting moment and to anotherset of positionsA ⁇ indicating the time of the momentary status desired,l an indicating organ,r electromagnetic means for ⁇ shifting said indicating organ step by step,I means connecting said setting organs with said electromagnetic means ener.- gizing said electromagnetic means to movesaid indicating4 organautomatically ay number of steps characterizing.
  • Apparatus for the determination of a momentary status of any periodical occurrence, the duration period and ⁇ the starting moment of which areknown, comprising incombination, a plurality of manuallyL operated setting organs having a plurality of contacts and adapted to be moved to one set ⁇ ot positions indicating said starting moment or to another set of positions indicating the time of the momentary status desired, any indicating organ comprising at least one endless strip4 having av scale thereon, electromagnetic means for shifting said strip step by step, a, rotary. ⁇ selector having a plurality of contacts, means connecting the contacts of said rotaryy selector with the contacts of saidy setting organs,y meansl connecting said rotaryl selector with said electromagnetic meansenergizing said electromagnetic. means to move said indicatingv organ automatically a number of steps characterizing saidstarting moment when said organs ed with the last mentioned means for initiating the twomovements of saidv indicating organ, said movements being ⁇ inthe same direction.
  • said selector and' saidY electromagnetic means energizing said electromagnetic means to, move saidv indicating organ automatically a number ⁇ o stepsv characterizlg Said starting moment when said organs are in the first-mentioned positions or further to move saidyindicating organ a number of stepsA corresponding to a, complement ofthe value characteriZng thejmomentary status to another valuev fixed in advance, the. last-mentioned means constituting electricaljcircuits each ofwhich includes an arm of the selector and anarm of a settingorgan, andcomprisingat least one test relay inat leastone of said electrical circuits,l and separatel switches connected with ⁇ the last mentionedjmeansfor initiating the two movements of the said indicating organ.
  • Apparatus for the determination of a momentary status of any periodical occurrence the duration period and the starting moment of which are known comprising, in combination, a plurality ofA manually operated setting organs having arms andcontacts adaptedto be selectively engaged by said arms, said arms being adaptedto be moved to one set of positions indicatingsa-id starting moment or to another set of positions indicating the time of the momentaryv status desiredan indica-tingy organ, electromagnetic' means for shifting said indicating organV step by; step, a rotary selector having arms and contacts adapted to be selectively engaged by said ⁇ arms, means connecting the contacts of said setting organsA with the contacts ofy said selector, ymeans connected with the arms of said selector and said electromagnetic means and confstituting electrical circuits each of which includes an arm of the selector and an arm oija setting organ, and at leastone ofsaid electrical circuits comprising atA least one test relay, means connectedwith said ⁇ relay and said electromagnetic means energizing said magnetic means to provide an intermittent
  • Apparatus for the determination of a momenta-1y status of any periodical occurrence the duration period and the starting moment of which are known comprising, in combination, a plurality of manually operated setting organs having arms and contacts adapted to be selectively engaged by said arms, said arms being adapted to be moved to one set of positions indicating said starting moment or to another set of positions indicating the time or the momentary status desired, an indicating organ, electromagnetic means for shifting said indicating organ step by step, a rotary selector having arms and contacts adapted to be selectively engaged by said arms, means connecting the contacts of said setting organs with the contacts of said selector, and means connected with the arms of said selector and said electromagnetic means and constituting electrical circuits each of which includes an arm of the selector and an arm of a setting organ, and at least one of said electrical Circuits comprising at least one test relay having an armature and windings adapted to attract said armature or to cause it to drop, and means connected with said relay and said electromagnetic means energizing said electromagnetic means to move said
  • Apparatus for the determination of a momentary status of any periodical occurrence the duration period and the starting moment of which are known comprising, in combination, a plurality of manually operated setting organs adapted to be moved to one set of positions indicating said starting moment or to another set of positions indicating the time of the momentary status desired, an indicating organ, electromagnetic means for shifting said indicating organ step by step, means connecting said setting organs with said electromagnetic means energizing said electromagnetic means to move said indicating organ automatically a number of steps characterizing said starting moment when said organs are in the iirst-mentioned positions or further to move said indicating organ a number of steps corresponding to a complement of the value characterizing the momentary status to a value characterizing the duration period and separate switches connected with the last mentioned means for initiating the two movements of the said i11- dicating organ.
  • Apparatus for the determination of a momentary status of any periodical occurrence the duration period and the starting moment of which are known comprising, in combination, a plurality of manually operated setting organs having arms and contacts adapted to be selectively engaged by said arms, said arms being adapted to be moved to indicate numerals corresponding to said starting moment or to indicate other numerals corresponding to the time of the momentary status desired, an endless strip constituting an indicating organ, electromagnetic means for shifting said strip in one direction step by step, a rotary selector having arms and contacts adapted to be selectively engaged by said arms, conducting wires connecting the contacts of said setting organs with the contacts of said selector, means connected with the arms of said selector and said electromagnetic means and comprising at least one test relay and means connected with said relay energizing said electromagnetic means to move said strip automatically a number of steps corresponding to the rst-mentioned numerals or further to move said strip a number of steps corresponding to the complements of said other numerals to numerals corresponding to
  • Apparatus for the determination of a momentary status of any periodical occurrence the duration period and the starting moment of which are known comprising, in combination, a plurality of manually operated setting organs adapted to be moved to one set of positions indicating said starting moment or to another set of positions indicating the time of the momentary status" desired, an indicating organ, electromagnetic means for shifting said indicating organ step by step, means connecting said setting organs with said electromagnetic means energizing said electromagnetic means to move said indicating organ automatically a number of steps characterizing said lstarting moment when said organs are in the first-mentioned positions, to move said indieating organ in the same direction a number of steps corresponding to a complement of the value characterizing the momentary status to another value iixed in advance, or to move said indicating organ back to its initial position, and three separate switches connected with the last-mentioned means for separately initiating said movements of the indicating organ.
  • Apparatus for the determination of a momentary status of periodical occurrences the duration periods and 'the starting moment of which are known comprising, in combination, a plurality of manually operated setting organs having a plurality of contacts and adapted to be moved to one set of positions indicating said starting moment or to another set of positionsy indicating the time of the momentary status desired, three separate strips constituting separate indicating organs for occurrences of different duration periods and provided with scales inscribed so as to be read simultaneously, electromagnetic means for separately shifting said strips stepwise, a single rotary selector having a plurality of contacts, means connecting the contacts of said rotary selector With the contacts of said setting organs, means connecting said rotary selector with said electromagnetic means energizing said electromagnetic means to move the three indicating organs simultaneously a number of steps characterizing said starting moment when said organs are in the first-mentioned positions or further to move said indicating organs a number of steps corresponding t0 a complement of the value characterizing the momentary status to Values characterizing

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US468845A 1942-10-15 1942-12-12 Phase calculating device Expired - Lifetime US2420751A (en)

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CN110594334B (zh) * 2019-09-18 2024-06-04 中国航空工业集团公司沈阳空气动力研究所 一种风洞模型被动抑振器及振子悬臂梁尺寸确定方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1944677A (en) * 1931-06-05 1934-01-23 Ibm Debit and credit tabulator
US2203707A (en) * 1940-06-11 Totalizing mechanism for voting

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2203707A (en) * 1940-06-11 Totalizing mechanism for voting
US1944677A (en) * 1931-06-05 1934-01-23 Ibm Debit and credit tabulator

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FR894565A (fr) 1944-12-28
GB577071A (en) 1946-05-03
CH230740A (de) 1944-01-31

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