US3869081A - Value input mechanism for calculating machines - Google Patents

Value input mechanism for calculating machines Download PDF

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Publication number
US3869081A
US3869081A US296553A US29655372A US3869081A US 3869081 A US3869081 A US 3869081A US 296553 A US296553 A US 296553A US 29655372 A US29655372 A US 29655372A US 3869081 A US3869081 A US 3869081A
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Prior art keywords
value
actuated
members
values
selector
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Expired - Lifetime
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US296553A
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English (en)
Inventor
Otto Haberkorn
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Walther Bueromaschinen GmbH
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Walther Bueromaschinen GmbH
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C7/00—Input mechanisms
    • G06C7/10—Transfer mechanisms, e.g. transfer of a figure from a ten-key keyboard into the pin carriage

Definitions

  • a ten-key calculating machine has a value input mechanism comprising a transversely moveable set pin [21] Appl' 296553 carriage having a plurality of set pins corresponding to the values of l to 9 and positioned in individual tens [30] Foreign Application Priority Data series.
  • a plurality of value selector members are en- Oct. 20, 1971 Germany 2152159 gageable with actuated P in descending Order from the 9 value so that each value member moves 52 0.3.
  • Ten-key calculating machines have been constructed utilizing a set pin carriage which is moveable transversely stepwise in response to actuation of the value keys on the keyboard. Actuation of these keys introduces a value into the set pin carriage from which the values are then transferred by value selector members sensing actuated set pins into totalizing and printing units.
  • the set pin carriage of such a calculating machine comprises a plurality of tens series of set pins with each series including pins to 8 with the number of series corresponding to the digital position capacity of the machine.
  • a stop bar is positioned to the right of the selector members for the nine set pins.
  • The'set pin carriage faces the value selector members on such ten-key calculating machines as disclosed in the German patents l,010,299 and 1,084,997.
  • the principle of operation of such ten-key calculating machines was also described in the second edition of the book by Wilhelm Lind, Bueromaschinen [Office Machines] published by Wintersche Verlagsbuchmaschine part 1, pages 107-117.
  • the selector members which may comprise differential racks can be guided along straight lines upon guide rails or be pivotable about a pivot point when in the form of rack segments.
  • the set pin carriage in order to accommodate the total and subtotal operations of the machine the set pin carriage must be moved from the abutment position of the selector members or the selector members must be guided through a vertical or transverse displacement away from the 0 stop of the set pin carriage.
  • the additional components necessary to accommodate this movement of the set pin carriage or displacement of the selector members requires a considerable volume which in turn also contributes to the unnecessarily increased overall dimensions of the machine.
  • a ten-key calculating machine has a value input mechanism which is responsive to the values introduced by actuating keys of a keyboard.
  • the mechanism comprises a set pin carriage which is transversely moveable stepwise in response to actuation of the keys.
  • a plurality of set pins are provided on the carriage corresponding to the values of 1 to 9 and positioned in individual tens series.
  • a plurality of value selector members are employed for transferring values into a totalizer and a printer and are engageable with actuated set pins in descending order in the direction of the values from 9 to 1.
  • each value selector member moves through a number of value divisions corresponding to the complement of 9 and this movement of a selector member is indicative of the value of the actuated key.
  • FIG. 1 is a vertical longitudinal sectional view as seen from the right side of a calculating machine with the components thereof being shown in their initial positions;
  • FIG. 2 is a top plan view looking in the direction of the arrow A of FIG. 1 and showing the relative positions of the keyboard, the set pin carriage and the value selector members.
  • values are introduced in a known manner into the calculating machine by means of digital keys 1 to 9, a 0 key, and 00 key on a ten-key keyboard 1.
  • the keyboard also includes several functional keys as known in the art.
  • a set pin carriage 2 Positioned below the keyboard is a set pin carriage 2 which is moved transversely within the machine by a suitable mechanism upon actuation of the keys as known in the calculating machine art.
  • the set pin carriage 2 comprises a plurality of set pins 3 which are actuated upon depression of a key.
  • the set pins correspond -to the values of 1 to 9 and are positionedfin a plurality of individual tens series with each series corresponding to a tens or digital position on the machine. As viewed in FIG.
  • each series of set pins is aligned with the sliding movement of value selector members'4.
  • Each of the selector members 4 carries a relatively moveable toothed rack 17 cooperating with a counter having addition and subtraction wheels.
  • the rack 17 is displaced by an indicated value on its respective selector member 4 by means of a spring 18.
  • the movement of each selector member 4 is determined by the abutment of the selector member with an actuated set pin 3.
  • the value selector members 4' are released by a collector shaft 9 mounted on a pivotally mounted lever 8.
  • tension spring mentary values which are indicative of the keyed-in values are transferred into a counter 11 which operates as an adding unit for the addition function and also in the subtraction function. These complementary values are introduced into this counter without any manipulations or control actions by the operator of the machine.
  • the set pin corresponding to the keyed-in value of 6 has been actuated and extends in a downward position so as to be engageable by the sensing edge 13 of a selector member 4.
  • This sensing edge will be in the position 13' upon contact with this actuated set pin.
  • the rack 17 of this selector member has thus been displaced only three value divisions from its initial position. For the value, the rack 17 of selector member 4 will be displaced over 9 value divisions until an abutment on selector'member 4 contacts a cross-piece which also slideably supports the selector members.
  • a digit type wheel 12 of the printing unit which is not illustrated comprises a toothed sector which meshes with selector rack member 4 by means of an intermediate gear 19.
  • the type wheel 12 is positioned to correspond with the complementary values and in the same manner as selector members 4 moves from the highest value position to the lowest value position or, from 9 to 0 position.
  • the type wheel 12 is pivoted through the corresponding number of value divisions in accordance with the displacement of selector rack member 4 and in accordance with the above specific example the value 6 is positioned in the printing position in front of a platen 14.
  • the counter 11 will receive the value 3 which is the complement of 9 corresponding to the value 9 as keyed-into the set pin carriage.
  • the representative value of 3 may be positive or negative in accordance with the actuated function key.
  • tens switching is achieved by means of a tensand the selector members 4 function as simple sensing push rods.
  • the present invention has disclosed a value input mechanism for a calculating machine wherein those value selector members corresponding to the tens series of set pins which are not actuated move over a distance of 9 value divisions to the 0 value. This is evidenced by reference to the above example of computation. Since the thin edge of each value selector member functions as the sensing structure no additional structure is employed on the value selector members for the sensing function. Since the set pins are arranged with respect to the sensing edge of the value selector members 'indes'cending value the number of value divisions that a selector member moves will correspond to the complement of 9 of the value of the actuated digital key.
  • value selector members each comprising a movable toothed rack arranged in substantially a straight line and each selector member corresponding to an 1 individual tens series of set pins, said value selector members being released by a collector shaft mounted on a pivotally mounted-lever, totalizer and printer means operatively actuated by said value selector members to receive values therefrom, each value selector member having a portion thereon engageable with an actuated set pin in a corresponding tens series for actuated values of from 1 to 9, means connected to each value selector member for moving said members in an actuated direction, the set pins of each tens series being arranged in descending order from 9 to l in the actuated direction of said value selector members whereby, for all calculating operations each value selector member moves in the actuated direction through a number of value divisions corresponding to the complement

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
  • Input From Keyboards Or The Like (AREA)
US296553A 1971-10-20 1972-10-11 Value input mechanism for calculating machines Expired - Lifetime US3869081A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712152159 DE2152159A1 (de) 1971-10-20 1971-10-20 Werteingabevorrichtung fuer rechen-, addiermaschinen und dergleichen

Publications (1)

Publication Number Publication Date
US3869081A true US3869081A (en) 1975-03-04

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Family Applications (1)

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US296553A Expired - Lifetime US3869081A (en) 1971-10-20 1972-10-11 Value input mechanism for calculating machines

Country Status (6)

Country Link
US (1) US3869081A (enExample)
JP (1) JPS4850797A (enExample)
CH (1) CH551660A (enExample)
DE (1) DE2152159A1 (enExample)
FR (1) FR2156773A1 (enExample)
IT (1) IT986860B (enExample)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2880933A (en) * 1952-01-08 1959-04-07 Westinger Karl Rotary differential actuating mechanism

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2880933A (en) * 1952-01-08 1959-04-07 Westinger Karl Rotary differential actuating mechanism

Also Published As

Publication number Publication date
DE2152159A1 (de) 1973-04-26
FR2156773A1 (enExample) 1973-06-01
CH551660A (de) 1974-07-15
IT986860B (it) 1975-01-30
JPS4850797A (enExample) 1973-07-17

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