US3260449A - Zero printing control device for a calculating machine - Google Patents

Zero printing control device for a calculating machine Download PDF

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Publication number
US3260449A
US3260449A US405368A US40536864A US3260449A US 3260449 A US3260449 A US 3260449A US 405368 A US405368 A US 405368A US 40536864 A US40536864 A US 40536864A US 3260449 A US3260449 A US 3260449A
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United States
Prior art keywords
typecarriers
amount
slide
actuators
printing
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Expired - Lifetime
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US405368A
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English (en)
Inventor
Gassino Teresio
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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

  • This invention relates to a zero printing control device for a calculating machine having a set of typecarriers presettable according to a multiorder amount by a set of actu-ators differenti-ally movable from a zero position, comprising a common member for preventing said typecarriers from printing, and a sensing member connected to said common member for concomitant movement in the transverse direc-tion.
  • a zero printing control device comprising a common member adapted to be moved from left to right until arrested by the typecarrier connected to the ⁇ actuator of the highest significant order for preventing the typecarriers of the left of said actuator yfrom printing zeros.
  • the shock of the common member against said typecarrier may perturb-ate the movement of both the actuator of the highest order ⁇ and the common member.
  • the Zero printing control device which is characterized by moving means for moving said common member and said sensing member from right to left before said typecarriers are caused to print, said sensing member being adapted to simultaneously sense said actuators perpendicular to said transverse direction land to disable said moving means when all the sensed actuators are in said zero position to condition said common member for preventing the ytypecarriers at left of the highest significant order of said amount from printing zeros.
  • a set up mechanism settable order by order is transversely movable together with said sensing member, whereby before said typecarriers 'are caused to print both said sensing member land said mechanism a-re always -aligned according to Ithe highest significant order by said amount.
  • FIG. l is a left hand longitudinal partial sectional view of a calculating machine embodying a zero printing control device :according to the invention.
  • FIG. 2 is another longitudinal partial sectional View of the machine of FIG. l;
  • FIG. 3 is a partial plan view of the machine of FIG. l;
  • FIG. 4 is a partial sectional view taken on the line IV-IV of FIG. 3.
  • the zero printing control device according to the invention is embodied in a ten key calculating machine.
  • the calculating machine comprises a set up mechanism formed of a set up carriage 1 settable order by order through a ten key keyboard not shown in the drawings.
  • the carriage 1 (FIGS. 2 and 3) comprises a bail 2 transversely slidable on a square shaft 3 and carrying a shaft 4.
  • the carriage 1 comprises also in each order a variably settable element or toothed sector 5 rotatably mounted on the shaft 4. Normally, when the carriage 1 is located in the right position shown in FIG. 3, the sectors 5 are variably rotated clockwise from the zero position shown in FIGS. l land 2, according to ⁇ an amount set up therein.
  • the universal bar 6 is operated by the shaft 7 when effecting an actuating machine cycle wherein a set of actuators, each one comprising a reciprocable rack 8, are differentially moved either under the control of the sectors 5 of the carriage 1 for accumulating the set up amount into la totalizer 9, or under the control of the totalizer 9 for taking a total.
  • a pair of cams 11 of the shaft 7 are adapted to reciprocate a universal bar 10 cooperating with the racks 8 through a forward .and a return stroke, whereby in an accumulating cycle the forward stroke of the racks 8 is positively effected by the universal bar 6 through the sectors 5 engaged therewith, whereas the return stroke of the racks 8 and the sectors 5 is positively effected by the universal bar 10.
  • an arm 12 Secured to the shaft 3 of the carriage 1 is an arm 12 (FIG. 1) having a pin 12' adapted to be engaged by a projection 13 of la slide 14 to engage the sectors 5 with the racks 8.
  • the slide 14 is connected to a bail 15 operable by a cam 17 secured to the shaft 7, as well Vas by a cam 16 secured to a hub 50 adapted to be secured to the shaft 7 during the cycles wherein an amount is accumulated.
  • the bail 2 is urged rightwards by a spring 18 (FIG. 3) land it is provided with a projection 19 engaging a notch of -a rack 20 transversely slidable on a second square shaft 21.
  • the rack 20 engages a pinion 22 secured to a longitudinal shaft 23.
  • Another pinion 24 secured to @the shaft 23 is norm-ally llocked iby a lever 25 against the urge of the spring 18.
  • the shaft 23 is adapted to be rotated by moving means comprising a clutch 30 controlled by a lever 31 (FIG. 2) and adapted to connect the shaft 23 with an electric motor not shown in the drawings.
  • the clutch 30 is normally disengaged and may be engaged by moving a link 34 forwards to rock the lever 31 counterclockwise.
  • the link 34 is controlled by a member 45 adapted to assume the position of FIG. 2 when the carriage 1 is in the right position of FIG. 3, to enable the link 34 to be engaged by a lever 33 cooperating wit-h a cam 32 of the main shaft 7.
  • the member 45 is also adapted to be displaced forwards when the carriage 1 is out of said right position.
  • the lever 31 may be returned in the position shown in FIG. 2 by rocki-ng a bail 35 (FIG. 3) clockwise under the control of a member settable according to the number of order of the amount set up on the carriage 1. More particularly, said member is formed of a sector 37 (FIG. 2) bodily rockable with, but axially slidable on a shaft 38, and variably engageable with a toothed edge 39 (FIG. 3) of slide 29 according to said number of orders, even when the carriage 1 is located in its right position.
  • the sectors 5 (FIG.
  • the calculating machine is also provided with a set of type-carriers each one formed of a typewheel 42 (FIG. 1) fulcrumed on a pivot 43 of a slide 44 slidably mounted on two stationary shafts 46 and adapted to bring the typewheell 42 against a platen 47.
  • Each slide 44' is normally urgedy by a spring 48 to contact a universal bar 49 secured to a pair of links 51 linked to a pair of arms 52 and 53 secured to a ⁇ shaft 54 lrockably mounted on the machine frame.
  • the arm 53 is connected through a pin 55 to' alink 56 linked to alever 57 pivoted at 58 and urged by a spring 59 to contact a cam 6'0 of the main shaft 7.
  • the pin 55 is adapted to engage a projection 61 of a bail 63 fulcrumed on the shaft 54and normally urged by a spring 64 to contact a stationary stop member.
  • a transverse portion 66 of the b'ail 63 is normally located on the path of a projection 67 provided on each slide 44.
  • each typewheel 42 Secured to each typewheel 42 is a pinion 68 engaging a rack 69 ⁇ linked :to a rst a'rm of a three-armed lever 71 pivoted ori a stationary shaft 72.
  • a second arm 73 of the lever 71 is provided with a notch located between two projections 76 and 77 and adapted to cooperate with a pin 75 secured to the corresponding rack 8.
  • the projection 77 ⁇ is shorter than the projection 76 to enable the raks 8 to be displaced rearwards without affecting the corresponding levers 71.
  • a third arm 78 of the lever 71 is normally urged by a spring 79 to contact a universal bar 80'secured ⁇ to a pair of levers 81 and 82 fulc'rumed on thez shaft 72.
  • An arm 83 ofthe lever 82 is pin and slot connected with the lever 57.
  • Thel calculating machine is provided with a zero printing coritrol device comprising a common member for preventing the typewheels 42 from printing. More particularly, said common member is formed of a slide 108 (FIG. 3) transversely slidable on a stationary pin 109 and provided with a bent lug 111 lnormally urged by a spring 112 to contact a pin 113 secured to the slide 29.
  • the slide 108 is provided with 'a bent edge 114 located on the path of a projection 116 (FIG. l) of each slide 44.
  • the Zero printing control device compri-ses a sensing member f-ormed of a plate 87 having a pair of bentV lug's 88 rockably mounted on a corresponding pair of lugs 89 of the slide 29 (FIG. 3), whereby the plate 87, the slide 108 and the carriage 1 may be conoomitantly moved in the transverse direction by the slide 29.
  • the plate 87 is normally urged by a spring 86 (FIG. 1) to contact a projection 8f4" of the lever 81 and it isadapted to simultaneous-ly sense the upper edge of an arcuate projection 91 provided on each arm 78.
  • the plate 8,7 is also provided with a toothed edge 92 (FIG. 3) adapted to engage a similar toothed edge 93 (FIG. 4) of lthe slide 36.
  • the machine is also provided with aV decimal point printing member formed of a slide 97 (FIG. 1) provided with two bent lugs 98 and 99 slidably and rockably mounted on a stationary shaft 100 and with a projection 96 for printing the decimal point on the platen 47.
  • the slide 97 is further slidable into a notch 101 of a slide 102, and it is provided with a shoulder 106 (FIG. 3) adapted to cooperate with a projection 107 of the slide 108.
  • the slide 102 (FIG. l) is slidably mounted on the shafts 46 at left of the slides 44 and it is urged by a spring 103 to contact the universal bar 49.
  • the slide 102 is provided with a projection 67 adapted to cooperate with the transverse portion 66 of the bail 63, but it is deprived of the projection 116.
  • the slide 97 locates its projection 96 at right of the typewheel 42 (FIG. 3) of the llowest order and its lug 99 above a stationary pin 104.
  • the slide 97 is adapted to be transversely moved manually or automatically in any known manner to locate the lug 99 at lleft of the pin 104 and to set the projection 96 between two predetermined adjacent typewheels 42.
  • the zero printing control device operates as follows.
  • the slide 97 is located in the position of FIG. 3.
  • a-n amount set up into the carriage 1 is to be accumulated into the totalizer 9, by depressing a corresponding motor key a cycle of the shaft 7 together with the hub 50 is elected.
  • the carriage 1, the slide 29 and the platt 87 either have been :shifted leftwards step by stepk when the amount has been set up, or they will be tabulated at the beginning of the cycle by a cam of the hub 50 not shown in the drawings under the control of the sector 37 when the carriage 1 has been previously returned rightwards, whereby the rocked sectors 5 are located in correspondence wi-th theI racks 8.
  • the slides 44 corresponding to the significant orders of the amount to be accumulated bring now the corresponding typewheels 42 to print said amount on the platen 47, while the slides 44 at left of the highest I
  • the cam 60 through the lever 57, restores both the universal bars 80 and 49.
  • the universal bar 80 restores thus the levers 71
  • the projection 84 of the lever 81 restores the plate 87 and disengages its toothed edge 92 from the toothed edge 93 of the slide 36.
  • the universal bar 49 in turn restores the slides 44 and 102
  • the spring 64 causes the portion 66 of the bail 63 to return on the path of the projections 67.
  • the lever 25 (FIG. 3) is caused to release the pinion 24, whereby the spring 18 restores rightwards the carriage 1 together with the slide 29 and the plate 87, while the spring 112 restores the slide 108.
  • Each rack 8 is now differentially moved rearwards by the projection 76 of the corresponding lever 71 under the action of the spring 79, until the corresponding totalizer wheel is zeroized in a known manner.
  • the levers 71 through the racks 69 rotate the typewheels 42 acc-Ording to the total taken, while the universal bar 49 releases the slides 44 and 102 which are arrested by the portion 66 of the bail 63.
  • the universal bar 6 (FIG. 2) is caused to zeroize the sectors 5 of the carriage 1, while the sector 37 is disengaged from the toothed edge 39 and is suddenly moved by the spring 40 (FIG. 3) to contact the projection 41.
  • the clutch 30 moves the slide 108 and the sensing plate 87 from right to left before the typewheels 42 are caused to print, and that the sensing plate 87 is adapted to simultaneously sense the projections 91 connected to the actuators 8 perpendicular to the transverse direction and to disengage the clutch 30 when all the sensed actuators are in the zero position to condition the slide 108 for preventing the typewheels 42 at left of the highest significant order of the amount from printing zeros.
  • the slide 97 is displaced leftwards from the position of FIG. 3 to locate the projection 96 between two predetermined adjacent -typewheels 42.
  • the lug 99 of the slide 97 is now displaced at left of the pin 104, which will no more prevent the projection 96 from printing .the decimal point.
  • the shoulder 1016 o-f the slide 97 engages the projection 107 of the slide 108, which is accordingly displaced lefbwards irrespective of the slide 29, to bring the bent edge .114 at left of the project-ion 96.
  • the pin 113 of the slide 29 additionally displaces lthe slide I108 leftwards and causes the amount to be printed with the proper decimal point.
  • the slide 1018 remains in the .position determined by the slide 97 and causes the amount to be printed according to the practice, with a cor-responding number of zeroes between the h-ighest significant digit and the decimal point.
  • a pair of elements 106 and ⁇ 113 one of which is connected to the de-cimal point printing member 97, and the' other is connected to the sensing member 87, are adapted to move the slide 108 leftwards, whereby the slide 108 will prevent the typecarriers at left of both the highest significant order of the amount and the decimal point from printing zeros.
  • a conventional non print control member may prevent the lever 57 (FIG. 1) from being rocked counterclockw-ise, whereby on one hand the bail 63 is not r-ocked counterclockwise, on the other hand, due to the shorter projec- ⁇ tion 77 of the arm 73, each rack 8 may be displaced rearwards, while the corresponding lever 71, rack 6 9 and type- 'wheel 42 are not moved.
  • a zerol printing control device comprising in combination:
  • a zero printing control device comprising in combination:
  • a zero printing control device comprising in combination:
  • a Zero printing-control device comprising in combination:
  • a zero printing -control device comprising in combination:
  • a zero printing control device comprising incombination:
  • a zer-o printing control device comprising in combination:
  • a zero printing control device comprising in combination:
  • each element (d) moving means adapted to move said sensing memof said set being variably settable according to an ber from right to left before said typecarriers are order of a set up amount, caused to print,
  • (k) means for causing then said actuators to engage UNITED STATES PATENTS said elements to back transfer said represented 2,486,959 11/ 1949 Mehan 23S-60.28 amount into said elements, 2,918,212 12/ 1959 Llorens 235-60.28

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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)
US405368A 1963-10-24 1964-10-21 Zero printing control device for a calculating machine Expired - Lifetime US3260449A (en)

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IT2216963 1963-10-24

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US3260449A true US3260449A (en) 1966-07-12

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SE (1) SE317211B (it)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3315884A (en) * 1967-04-25 Bennett mechanical memory unit by
US3455504A (en) * 1966-08-20 1969-07-15 Diehl Decimal point and zero printing mechanism for calculating machines
US3637987A (en) * 1969-06-04 1972-01-25 Diehl Zero-printing device for calculating machines
US3693871A (en) * 1970-07-23 1972-09-26 Olympia Werek Ag Apparatus for preventing printing of zeros above the highest order of a printed number
US3875858A (en) * 1973-09-10 1975-04-08 Hugh L Clary Zero printing control for data printers

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486959A (en) * 1949-11-01 Calculating machine
CA476510A (en) * 1951-08-28 A. Christian Raymond Accounting machines
US2918212A (en) * 1959-12-22 Calculating machine
US3021055A (en) * 1956-12-31 1962-02-13 Friden Inc Zero setting control means
US3221644A (en) * 1962-04-05 1965-12-07 Precisa Ag Printing device with zero suppressing means

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486959A (en) * 1949-11-01 Calculating machine
CA476510A (en) * 1951-08-28 A. Christian Raymond Accounting machines
US2918212A (en) * 1959-12-22 Calculating machine
US3021055A (en) * 1956-12-31 1962-02-13 Friden Inc Zero setting control means
US3221644A (en) * 1962-04-05 1965-12-07 Precisa Ag Printing device with zero suppressing means

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3315884A (en) * 1967-04-25 Bennett mechanical memory unit by
US3455504A (en) * 1966-08-20 1969-07-15 Diehl Decimal point and zero printing mechanism for calculating machines
US3637987A (en) * 1969-06-04 1972-01-25 Diehl Zero-printing device for calculating machines
US3693871A (en) * 1970-07-23 1972-09-26 Olympia Werek Ag Apparatus for preventing printing of zeros above the highest order of a printed number
US3875858A (en) * 1973-09-10 1975-04-08 Hugh L Clary Zero printing control for data printers

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Publication number Publication date
GB1064940A (en) 1967-04-12
CH414206A (it) 1966-05-31
SE317211B (it) 1969-11-10

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