US3450042A - Zero printing control for adding and printing machines - Google Patents

Zero printing control for adding and printing machines Download PDF

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Publication number
US3450042A
US3450042A US698597A US3450042DA US3450042A US 3450042 A US3450042 A US 3450042A US 698597 A US698597 A US 698597A US 3450042D A US3450042D A US 3450042DA US 3450042 A US3450042 A US 3450042A
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United States
Prior art keywords
slide
zero
printing
platen
racks
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Expired - Lifetime
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US698597A
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English (en)
Inventor
Natale Capellaro
Carlo Bellis
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Olivetti SpA
TIM SpA
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Olivetti SpA
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C19/00—Decimal-point mechanisms; Analogous mechanisms for non-decimal notations
    • G06C19/04—Devices for printing the point

Definitions

  • a zero printing control device for adding machines com prises a platen movable to strike against a set of type carriers integral with a corresponding set of differential actuators and adapted to present the zero type in front of the platen when the corresponding actuator is in the zero position, and a spring urged slide transversely variably movable from left to right.
  • the slide is provided with an edge having a first portion adapted to engage the type carrier representing significant digits, substantially at the side opposite the type face to be struck by said platen, and a second portion offset with respect to said first portion to allow the type carriers representing nonsignificant zeros to be removed from the paper during the striking movement of the platen.
  • the present invention relates to a zero printing control device for adding machines or the like, which control device is adapted to prevent the printing of nonsignificant zeros and comprises a platen which is movable to strike against a set of type carriers, a set of actuators each of which is differentially movable from a zero position to represent an amount, is integral with a corresponding one of said actuators and is adapted to present the zero type in front of said platen when the corresponding actuator is in said zero position and a spring-urged slide transversely movable with respect to said type carriers from left to right until it is arrested by the first type carrier that has been displaced out of said zero position.
  • the type carriers are located at rest in an under zero position so that they have to be displaced in order to print the significant zeros. Furthermore, the type carriers in this known device are sensed by a set of printing control latches which are adapted to prevent the printing of the nonsignificant zero in a known manner, so that the device for preventing the printing of the nonsignificant zeros is both intricate and expensive.
  • the type carriers are located at rest in a zero position and a single slide is movable transversely from left to right until it is stopped against the first type carrier which has been displaced out of the zero position.
  • the slide controls a set of independent hammers which act on the rear side of the paper and consequently this device is also intricate and expensive.
  • the zero printing control device which is extremely simple and reliable in operation and which is characterized in that the said slide is provided with an edge having a first portion adapted to engage said first type carrier and the type carriers on the right thereof substantially at the side opposite the type face to be struck by said platen, said edge having also a second portion offset with respect to said first portion to allow the type carriers on the left of said first type carrier to be removed from the paper during the striking movement of said platen so as to prevent the nonsignificant zeros from being printed.
  • FIG. 1 is a fragmentary longitudinal section of an adding machine mechanism incorporating a control device for preventing the printing of nonsignificant zeros
  • FIG. 2 is a fragmentary plan view of the mechanism of FIG. 1;
  • FIG. 3 is a front view of a detail of the mechanism of FIG. 1.
  • 4 indicates a conventional carriage carrying the setting stop pins in a ten-key keyboard adding machine.
  • the carriage 4 comprises, in each order, a column of stop pins 6 for the diflerent figures, which pins are settable by displacing them rearwardly (leftward in FIG. 1).
  • the carriage 4 is furthermore transversely movable step-by-step along a bar 7 in known manner.
  • the setup stop pins -6 are adapted to cooperate with shoulders 9 of a set of actuators in the form of vertical racks 8 which are normally located in a zero position.
  • the racks are difierentially movable from this zero position under the control of an universal bar 12, according to the amount set up on the carriage in the accumulation cycles, or according to the amount accumulated in a register 11 in the total-taking cycles.
  • the racks 8 are vertically slidable on a stationary shaft 10 and are pushed upwards against the bar 12 by the action of springs 5.
  • the universal bar 12 is secured to the outer ends of two arms 13 and 14 (FIG. 2) fulcrumed on a stationary shaft 16 (FIG. 1).
  • the arm 13 forms part of a ball-crank lever, the other arm of which is provided with a roller 17 which is held by a spring 15 against the surface of a cam 18 fixed on a shaft 19 which constitutes the main shaft of the machine.
  • Each rack 8 has a portion 21 which constitutes a type carrier and, when the corresponding rack 8 is in the rest position, presents a zero character 20 opposite a papercarrying platen 22.
  • Each portion 21 is formed with a window 23 through which extends a slide 24 (FIG. 2) adapted to slide transversely in bearings provided in stationary brackets 26 and biased by a spring 25 to move from left to right.
  • the slide 24 is provided with a bent lug 27 (FIG. 3) by means of which it contacts a pin 28 secured to one arm of a bellcrank lever 29 biased by a spring 30 which is weaker than the spring 25.
  • the other arm of the bell-crank lever 29 is provided with a shoulder 31 which is normally in contact with the lower edge of the arm 13.
  • each I spring 34 (FIG. 1) is adapted to cooperate with a shoulder 36 of the corresponding rack 8.
  • the slide 24 (FIG. 2) furthermore has a first portion 37 of its rear edge, which is normally in contact with the rear edge of the window 23, and a second portion 38 of its rear edge, which is oifset with respect to the portion 37.
  • Each window 23 (FIG. 1) is provided with a shoulder 39 which is adapted to be brought into the path of a shoulder 41 (FIG. 2) on the slide 24 when the corresponding rack 8 is moved out of the zero position.
  • the slide 24 furthermore comprises a third portion consisting of an edge 42 adjacent and to the left of the shoulder 41 and adapted to cooperate with a shoulder 43 (FIG. 1) of the window 23.
  • the slide 24 (FIG. 2) is provided with a cam element 44 located between the portion 37 and the portion 38.
  • This cam element 44 is adapted, after the platen has been struck, to engage the rear edge of the windows 23 of the racks 8 corresponding to the nonsignificant zeroes.
  • the platen 22 is integral with a shaft 46, the ends of which are journalled in bearings in two arms 47 and 48 and are adapted to slide in two slots 49 (FIG. 1) formed in stationary parts '26 of the frame, of the machine.
  • the arms 47 and 48 are connected respectively to two arms 52 of a bail 53 which is pivoted on a stationary shaft 54 and is provided with a third arm 55 biased by a spring 56 to cooperate with a cam 57 on the shaft 19.
  • the cam 18 After the printing operation, the cam 18 returns the universal bar 12 (FIG. 1) by causing the arms 13 and 14 to rock in a clockwise direction. The arm 13 then rocks the lever 29 (FIG. 3) counterclockwise so as to return the slide 24 to the left.
  • the cam element 44 (FIG- URE 2) of the slide now engages the rear edges of the windows 23 of the racks 8 corresponding to the non- 4 significant zeros so as to return these racks to their starting positions.
  • the slide 24 is returned to the left as soon as the portion 42 of the slide clears the shoulders 43 of .the racks 8' corresponding to the nonsignificant zeros and these last-mentioned racks are moved upwardly by the action of the respective springs 5 until they are brought to rest one after the other against the universal bar 12 which is being returned.
  • the slide 24 is provided with a first portion 37 adapted to act as a support for those type carriers 8, 21 which are positioned according to the various orders of the amount to be printed during, the striking operation of the platen 22, and with a second portion 38 adapted to allow those type carriers which are positioned in accordance with the nonsignificant zeros to be released during the striking operation of the platen 22 so as to prevent such zeros from being printed.
  • the racks 8 which are not supported by the portion 37 of the slide are released so that they can move forward in order to prevent the nonsignificant zeros from being printed. Therefore, the function of the springs 34 is only to prevent the said racks from slightly smudging the paper. Such smudging would, however, be acceptable in this type of machine and the springs 34 could, therefore, be omitted.
  • a zero printing control device for adding machines or the like, comprising a platen movable to strike against a set of type carriers, a set of actuators differentially movable from a zero position to represent an amount, each one of said type carriers being integral with a corresponding one of said actuators and being adapted to present the zero type in front of said platen when the corresponding actuator is in said zero position, and a spring-urged slide transversely movable with respect to said type carriers from left to right until it is arrested by the first type carrier that has been displaced out of said zero position, characterized in that the said slide is provided with an edge having a first portion adapted to engage said first type carrier and the type carriers on the right thereof substantially at the side opposite the type face to be struck by said platen, said edge having also a second portion offset with respect to said first portion to allow the type carriers on the left of said first type carrier to be removed from the paper during the striking movement of said platen so as to prevent the nonsignificant zeros from being printed.
  • each one of said type carriers has a part adapted to be located in the path of a shoulder of said slide when the corresponding type carrier is located out of said zero position, said slide having a second edge adjacent said shoulder and opposite said first portion, said second edge being adapted to prevent the type carriers corresponding to said nonsignificant zeros from being moved out of said zero position.
  • a device comprising means operable for transversely return said slide, and a cam portion provided on said slide between said first and second portions for returning the removed type carriers during the return movement of said slide.
  • a device comprising a set of leaf springs adapted to engage said type carriers to assist the removal of the type carriers on the left of said first type carrier from said platen.

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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)
  • Handling Of Sheets (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
  • Advancing Webs (AREA)
US698597A 1967-01-17 1968-01-17 Zero printing control for adding and printing machines Expired - Lifetime US3450042A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT5017067 1967-01-17

Publications (1)

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US3450042A true US3450042A (en) 1969-06-17

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US698597A Expired - Lifetime US3450042A (en) 1967-01-17 1968-01-17 Zero printing control for adding and printing machines

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US (1) US3450042A (en)van)
BE (1) BE709277A (en)van)
CH (1) CH457930A (en)van)
DE (1) DE1574549A1 (en)van)
FR (1) FR1551529A (en)van)
GB (1) GB1178662A (en)van)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3875858A (en) * 1973-09-10 1975-04-08 Hugh L Clary Zero printing control for data printers
US3878777A (en) * 1973-11-23 1975-04-22 Addmaster Corp Squeeze printer with zero elimination

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1702628A (en) * 1929-02-19 bryce
US1933309A (en) * 1930-02-21 1933-10-31 Ibm Zero printing tabulator
US2019901A (en) * 1931-06-27 1935-11-05 Ibm Printing mechanism
US2131918A (en) * 1936-07-07 1938-10-04 Ibm Printing mechanism
US2387861A (en) * 1943-12-30 1945-10-30 Remington Rand Inc Accounting machine
US2507117A (en) * 1940-02-01 1950-05-09 Remington Rand Inc Zero control means in accounting machines

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1702628A (en) * 1929-02-19 bryce
US1933309A (en) * 1930-02-21 1933-10-31 Ibm Zero printing tabulator
US2019901A (en) * 1931-06-27 1935-11-05 Ibm Printing mechanism
US2131918A (en) * 1936-07-07 1938-10-04 Ibm Printing mechanism
US2507117A (en) * 1940-02-01 1950-05-09 Remington Rand Inc Zero control means in accounting machines
US2387861A (en) * 1943-12-30 1945-10-30 Remington Rand Inc Accounting machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3875858A (en) * 1973-09-10 1975-04-08 Hugh L Clary Zero printing control for data printers
US3878777A (en) * 1973-11-23 1975-04-22 Addmaster Corp Squeeze printer with zero elimination

Also Published As

Publication number Publication date
BE709277A (en)van) 1968-05-16
GB1178662A (en) 1970-01-21
CH457930A (fr) 1968-06-15
DE1574549A1 (de) 1971-09-02
FR1551529A (en)van) 1968-12-27

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