US2307669A - Listing machine - Google Patents

Listing machine Download PDF

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Publication number
US2307669A
US2307669A US421015A US42101541A US2307669A US 2307669 A US2307669 A US 2307669A US 421015 A US421015 A US 421015A US 42101541 A US42101541 A US 42101541A US 2307669 A US2307669 A US 2307669A
Authority
US
United States
Prior art keywords
hammers
type
movement
shaft
alignor
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
US421015A
Other languages
English (en)
Inventor
Crosman Loring Pickering
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.)
Monroe Calculating Machine Co
Original Assignee
Monroe Calculating Machine Co
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 Monroe Calculating Machine Co filed Critical Monroe Calculating Machine Co
Priority to US421015A priority Critical patent/US2307669A/en
Priority to US466935A priority patent/US2348789A/en
Application granted granted Critical
Publication of US2307669A publication Critical patent/US2307669A/en
Priority to CH275189D priority patent/CH275189A/fr
Anticipated expiration legal-status Critical
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 has relation to listing machines, and particularly to printing mechanism therefor.
  • Fig. 1 is a vertical section taken through the keyboard and printing mechanism of a listing adding machine constructed in ;accordance with the invention.
  • Fig. 2 is a right side elevation f the machine, with casing removed, showing the operating and printing mechanisms.
  • the invention is shown as applied to a motor operated machine corresponding to a disclosure of United States Patent N0. 1,932,013, issued to Loring P. Crosman on October 24, l933,'and-entitled Register, as modified in an application for patent of the present inventor, Serial Number 421,016 filed of even date herewith.
  • each differential actuator lever ,BIIl is provided with segmental rack teeth, adapted to mesh with the pinions 412 of a series of accumulator wheels 413.
  • Index' bars 6I5 are pivotallyconnected with the upper arms of levers BIO, these index bars being moved, upon counter-clockwise rotation of the levers, into'engagement with the stems of selectively depressed keys 2I5.
  • Type bars 6 are pivotally connected to the rearward arms of-1evers6l0, each type bar being provided with a longitudinally disposed series of type representing the digits 0 and 1 to 9.
  • the pinions 412 will, first .be disengaged from the actuator racks,.'and thereafter the racks Will be moved counter-clockwise so that in a column in which the 7 key (for instance) has been depressed the actuator Will be allowed a degree of movement sumcient to bring the numeral type i opposite the printing line of the platen 85.
  • the motor operation of the machine is suspended before the actuator racks 6H3 have been moved, and the accumulator wheels 413 are rotated to zero, the pinions 4'12 being in mesh with the actuator racks.
  • This is eifected by releasing all of the column latches 2H and by rotation of a shaft 631 (Fig. 1) having a 5 series of pins adapted to adjust a series of stops ,6l3 individually into the paths of movement of zero stops 451 of the accumulator wheels.
  • the pins of shaft 601 also operate to move the pawls 6H, releasing the differential actuators 6H1 individually, for operation by their springs 683.
  • the pins of shaft 601 operate successively, from right to left of the machine.
  • the released lever 6I0 will rotate the accumulator wheels 413 in a subtractive direction (clockwise as viewed in Fig. l) to zero, this action serving to displace the type bars 6H to a position in which the amount subtracted from the accumulator will be set on the printing line.
  • frame 6 i 6 will be rotated counter-clockwise; printing will be effected; the accumulator pinions 412 disengaged from the racks, and frame 616 rotated clockwise, picking up the actuators bill successively, according to the positions in which they have been stopped by the accumulator wheels, and returning the parts to normal pos1- tion. It may be noted that during these totaling operations, none of the keys 2I5 are in depressed position.
  • the hammers The digit type is solidly set in the type bars til I, and these type bars are normally held n forward position substantially spaced from the platen 339i, by means of springs Hi5 (Fig. 1). Engaging the forward face of each type; bar 6H is a hammer I46, mounted upon a shaft I41 fixed in the machine frame. The hammers are operated by means of a spring M8, and are normally held tensioned by means of a bail I 39, suspended from shaft I41 and connectedby a link I witharockarml'tl. I
  • Arm II is fast upon a shaft 392 upon which is also fast an arm 32'! (Fig. 2) having link connection with the motor driven arm 3I6.
  • shaft 362 will be rocked clockwise, and bail I49 moved forwardly, permitting the hammers I46 to rotate gradually in a clockwise direction until the type bars 6 are forced to a position wherein the type at the printing line will be closely adjacent to the surface of platen 89L Bail I49 will be held in this position during the printing operation, and will subsequently be returned to restore the hammers to normal position.
  • This will be the entire operation of any of the hammers I46 located in columns to the left of those wherein keys 2I5 have been depressed.
  • a series of latches I52 (one for each hammer I46) is provided, the latches being pivotally mounted upon a shaft I53, fixed in the machine framing, and being operated by the spring I48, which connects the latches I52 and the hammers I46, as seen in Fig. 1.
  • Each latch I52 lies ben'eath a lug I54 of the related type bar 6
  • the lug I54 of said bar will move away from latch I52, which will thereupon rise and engage lug I55 of the hammer. This engagement is timed to occur before any substantial movement of the hammers is allowed by bail I49.
  • a bail I56 supported from shaft I53, is provided with a depending hook I51 (Fig. 2), adapted to be engaged near the extreme forward movement of the actuator drive by a lug I56 of arm I5I, depressing bail I56, against the tension of a spring I59, thereby releasing latches I52 from engagement with the hammers I46.
  • hammers I46 will be violently operated by their springs I48, imparting sufficient momentum to the type bars 6' to insure the engagement of the type with the record material supported on platen 89L
  • the hammers are provided with overlapping lugs I69 (Fig. 1), which will serve to hold any hammer to the right of one secured by its latch.
  • a latch I52 upon movement of bail I56, will release its related hammer I46 and all hammers lying to the right thereof, for printing operations.
  • the teeth of alignor I6I are designed to engage with the toothed or pointed ends of the rearward arm of actuator levers 6), a series of ten tooth shoulders of the alignor I6I being related to each lever 610.
  • is designed to engage the related actuator when it stands in zero position; the second tooth when it stands in 1 registering position, etc., the highest shoulder of the alignor corresponding to the 9 registering position of the actuator.
  • the shoulders of the alignor will be engaged with and thereafter disengaged from the actuators successively, in the actuator positions running from 0 to 9 and from 9 to 0.
  • roller I68 will move along the forward wall of the cam slot of plate I69, providing first for a dwell, during "the preliminary adjustment of the accumulators, eta, thereafter for forward movement of plate I49, effecting forward pivotal movement of the alignor about shaft I62, to bring the shoulder 'of the alignor successively into engaging position, roller I68 finally acting upon a dwell surface of the forward and of the rear walls of the slot of plate I69, during which time'th'e printing occurs; then acting upon a cam surface which will effect rearward movement of plate I69 and rearward pivotal movement of the alignor about shaft I62 to disengage the actuators successively, the jfina'l movement of roller I68 being along a dwell of a slot of plate I 69.
  • Shaft I62 will remain in depressed position during the rearward pivotal movement of the alignor until at the end of such movement the hammers for said type bars; means normally holding the hammers under spring tension and operable by the operating means to permit gradual movement of the hammers to move the type bars pivotally to position adjacent the platen,
  • spring latches normally held under spring tension by the type bars and each releasable by a displaced type bar to engage the related hammer to prevent said gradual movement, and means operable by the operating means after operation of the holding means to release the latches and thereby efiect printing operation of the hammers.

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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)
  • Common Mechanisms (AREA)
US421015A 1941-11-29 1941-11-29 Listing machine Expired - Lifetime US2307669A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US421015A US2307669A (en) 1941-11-29 1941-11-29 Listing machine
US466935A US2348789A (en) 1941-11-29 1942-11-25 Listing machine
CH275189D CH275189A (fr) 1941-11-29 1947-09-12 Machine à calculer enregistreuse.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US421015A US2307669A (en) 1941-11-29 1941-11-29 Listing machine

Publications (1)

Publication Number Publication Date
US2307669A true US2307669A (en) 1943-01-05

Family

ID=23668836

Family Applications (1)

Application Number Title Priority Date Filing Date
US421015A Expired - Lifetime US2307669A (en) 1941-11-29 1941-11-29 Listing machine

Country Status (2)

Country Link
US (1) US2307669A (fr)
CH (1) CH275189A (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744682A (en) * 1956-05-08 Accumulator engaging mechanism
US2746381A (en) * 1949-06-14 1956-05-22 Burroughs Corp Type bar control mechanism
US2746385A (en) * 1946-09-02 1956-05-22 Precisa A G Rechenmaschinenfab Type bars for calculating and bookkeeping machines
US2779267A (en) * 1954-01-29 1957-01-29 Friden Calculating Machine Co Printing mechanism for a calculating machine
US2821909A (en) * 1955-04-07 1958-02-04 Olympia Werke Ag Type control apparatus for business machines and the like
US3000561A (en) * 1955-12-12 1961-09-19 Underwood Corp Ten key adding and subtracting machine
US3371601A (en) * 1966-02-09 1968-03-05 American Cyanamid Co Selective type bar and ink pad arrangement
US3495529A (en) * 1968-03-07 1970-02-17 Ncr Co Type bar anti-rebound mechanism

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744682A (en) * 1956-05-08 Accumulator engaging mechanism
US2746385A (en) * 1946-09-02 1956-05-22 Precisa A G Rechenmaschinenfab Type bars for calculating and bookkeeping machines
US2746381A (en) * 1949-06-14 1956-05-22 Burroughs Corp Type bar control mechanism
US2779267A (en) * 1954-01-29 1957-01-29 Friden Calculating Machine Co Printing mechanism for a calculating machine
US2821909A (en) * 1955-04-07 1958-02-04 Olympia Werke Ag Type control apparatus for business machines and the like
US3000561A (en) * 1955-12-12 1961-09-19 Underwood Corp Ten key adding and subtracting machine
US3371601A (en) * 1966-02-09 1968-03-05 American Cyanamid Co Selective type bar and ink pad arrangement
US3495529A (en) * 1968-03-07 1970-02-17 Ncr Co Type bar anti-rebound mechanism

Also Published As

Publication number Publication date
CH275189A (fr) 1951-05-15

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