US3301371A - Automatic zero printing means - Google Patents

Automatic zero printing means Download PDF

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Publication number
US3301371A
US3301371A US475645A US47564565A US3301371A US 3301371 A US3301371 A US 3301371A US 475645 A US475645 A US 475645A US 47564565 A US47564565 A US 47564565A US 3301371 A US3301371 A US 3301371A
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US
United States
Prior art keywords
circuit
character
contact
recording
responsive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US475645A
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English (en)
Inventor
Lungwitz Gunter Kurt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HAMANN RECHENMASCHINEN GmbH
Original Assignee
HAMANN RECHENMASCHINEN GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HAMANN RECHENMASCHINEN GmbH filed Critical HAMANN RECHENMASCHINEN GmbH
Application granted granted Critical
Publication of US3301371A publication Critical patent/US3301371A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C11/00—Output mechanisms
    • G06C11/04—Output mechanisms with printing mechanisms, e.g. for character-at-a-time or line-at-a-time printing

Definitions

  • the invention concerns an arrangement for automatically printingone or more zeros following the printing of a significant digit and without which printing of the zeros a printedvalue would be incomplete.
  • This object is achieved by activating a magnet under control of a key to cause repeated entry of a zero.
  • Means are provided whereby the circuit of this magnet is interrupted when the zero type lever has passed a certain point in approaching the platen. The circuit is re-established when the type lever passes this point on its return movement, thereby activating the magnet for another stroke of the zero type lever. This operation is repeated until the carriage has moved out of the range of a last contact bar provided on a program bar for the purpose of controlling the operations in the value column.
  • the key which serves in activating the automatic zero print mechanism is identical with the generally known tubulator key, so that both functions are alternately served by the same key.
  • a further characteristic of the invention is found in the provision of adapting a program bar, by minor modifications, in connection with switching means, to permit the automatic print-out of the decimal point at any selected position within the value column.
  • the tabulator key, the space key, or the return key may be depressed to limit, in generally known manner, the extent of entry in the typing column.
  • a tabulating function involves the depression of a key T to 3,301,371 Patented Jan. 31, 1967 close and then open a switch. With contact K2 closed an electromagnet M2 is energized. This initiates tabulation, in known manner to a desired columnar position. In this position, a particular value, e.g. 230000, may be entered by depressing the keys 2 and 3 which causes these numbers to be printed on a form. The printing of the first of these digits, the 2, causes, by conventional means,
  • the contact K4 is opened, by means of the lever 6.1 which is connected with. the lever 6, and the solenoid M2 is deenergized.
  • the contact K4 is closed again by the same parts.
  • the solenoid is again energized and causes a second zero print movement of the type lever 7.
  • the zero print-out is repeated until the slip contact 811, which is moved by means of the typewriter carriage in a known manner, has left the last contact bar finger 8c which is provided on the program bar 8 for the control of the print-out in the column 9.
  • known and therefore not described elements become effective to open the contact K0, thereby de-energizing the relay R1, and forcing all mechanical and electrical elements which were instrumental in the automatic print-out of the zeros to assume their respective normal positions.
  • any contact bar 80 (see the broken representation exemplifying this) with a contact bar 8d, instead of the bar controlling the automatic zero print.
  • an electromagnet M3 is energized by means of the bar 8a, slip contact 8b, contact bar 8d, the lower pole of contact K1, to cause printing of a decimal point automatically in the preselected place.
  • a well known holding circuit may be provided to keep R3 energized even though key T is released.
  • (0) electrical contact means including a first one of a series of said fingers, jointly responsive to tabulation of the record receiving device to said position and to the recording of a character to partially complete a circuit;
  • (f) means responsive to said recording device to open and then to close said circuit to cause repeated action of said character recording device.
  • An automatic repeat character recording device as defined in claim 1 having a key and means responsive to a first depression thereof to initiate the operation of said tabulating means and responsive to the second depression thereof to complete said circuit.
  • a repeat character recording device as defined in claim 1 including a second circuit comprising a finger electrically distinguishable from said other fingers; means responsive to said repeat recording operation to engage said distinguishable finger and energize said second circuit, and initiate the recording of a scond character.
  • (c) means responsive'to the completion of said second circuit for closing a switch in the first circuit to condition the first circuit for completion upon closing a second switch therein;
  • a repeat zero printing mechanism having (a) a solenoid, operable when energized, to actuate a zero print bar;
  • a key operable upon a first depression thereof to energize a solenoid and initiate tabulation of a printing platen to a predetermined position

Landscapes

  • 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)
  • Accessory Devices And Overall Control Thereof (AREA)
US475645A 1964-08-12 1965-07-29 Automatic zero printing means Expired - Lifetime US3301371A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH0053507 1964-08-12

Publications (1)

Publication Number Publication Date
US3301371A true US3301371A (en) 1967-01-31

Family

ID=7158369

Family Applications (1)

Application Number Title Priority Date Filing Date
US475645A Expired - Lifetime US3301371A (en) 1964-08-12 1965-07-29 Automatic zero printing means

Country Status (5)

Country Link
US (1) US3301371A (de)
BE (1) BE665287A (de)
CH (1) CH423311A (de)
DE (1) DE1449966A1 (de)
NL (1) NL6507907A (de)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2600200A (en) * 1949-10-19 1952-06-10 Underwood Corp Repeat type action for typewriters and like machines
US2737241A (en) * 1952-10-17 1956-03-06 Ibm Automatic zeros punching device under key and program card control
US2771242A (en) * 1956-11-20 von yvaldbergen
US2905297A (en) * 1955-10-28 1959-09-22 Triumph Werke Nurnberg A G Fa Repeat actuation mechanism for business machines
US3007632A (en) * 1957-06-25 1961-11-07 Royal Mcbee Corp Typewriter control of an internally cycling computer unit
US3053444A (en) * 1962-09-11 Heise
US3072238A (en) * 1960-10-24 1963-01-08 Smith Corona Marchant Inc Program unit
US3120301A (en) * 1961-04-03 1964-02-04 Scm Corp Program device
US3225884A (en) * 1960-01-12 1965-12-28 Grundig Max Type lever action control arrangement
US3232403A (en) * 1960-12-24 1966-02-01 Grundig Emv Typewriter having two sets of typelevers and continuously moving carriage

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2771242A (en) * 1956-11-20 von yvaldbergen
US3053444A (en) * 1962-09-11 Heise
US2600200A (en) * 1949-10-19 1952-06-10 Underwood Corp Repeat type action for typewriters and like machines
US2737241A (en) * 1952-10-17 1956-03-06 Ibm Automatic zeros punching device under key and program card control
US2905297A (en) * 1955-10-28 1959-09-22 Triumph Werke Nurnberg A G Fa Repeat actuation mechanism for business machines
US3007632A (en) * 1957-06-25 1961-11-07 Royal Mcbee Corp Typewriter control of an internally cycling computer unit
US3225884A (en) * 1960-01-12 1965-12-28 Grundig Max Type lever action control arrangement
US3072238A (en) * 1960-10-24 1963-01-08 Smith Corona Marchant Inc Program unit
US3232403A (en) * 1960-12-24 1966-02-01 Grundig Emv Typewriter having two sets of typelevers and continuously moving carriage
US3120301A (en) * 1961-04-03 1964-02-04 Scm Corp Program device

Also Published As

Publication number Publication date
NL6507907A (de) 1966-02-14
BE665287A (de) 1965-10-01
DE1449966A1 (de) 1968-12-12
CH423311A (de) 1966-10-31

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