US3428159A - Tabulating apparatus for directly locking an escapement gear - Google Patents

Tabulating apparatus for directly locking an escapement gear Download PDF

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Publication number
US3428159A
US3428159A US564283A US3428159DA US3428159A US 3428159 A US3428159 A US 3428159A US 564283 A US564283 A US 564283A US 3428159D A US3428159D A US 3428159DA US 3428159 A US3428159 A US 3428159A
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United States
Prior art keywords
locking
tabulating
carriage
escapement
movement
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
US564283A
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English (en)
Inventor
Wolfgang Klingner
Arthur Kittel
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.)
Olympia Werke AG
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Olympia Werke AG
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Publication date
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Publication of US3428159A publication Critical patent/US3428159A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J21/00—Column, tabular or like printing arrangements; Means for centralising short lines
    • B41J21/06—Column, tabular or like printing arrangements; Means for centralising short lines with means for preventing rebound from stops
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J19/00—Character- or line-spacing mechanisms
    • B41J19/18—Character-spacing or back-spacing mechanisms; Carriage return or release devices therefor
    • B41J19/66—Carriage-release mechanisms

Definitions

  • the present invention relates to a tabulating apparatus, and more particularly to apparatus for stopping and looking the paper carriage of a typewriter or calculator after a tabulating movement.
  • a stop in the respective selected decimal order is placed in the path of movement of a tab set on the paper carriage when the tabulator key is actuated, and the escapement pawl of the escapement mechanism is turned to a position releasing the escapement gear so that the paper carriage runs to the left under the action of the carriage spring until the set tab runs onto the stop in its path.
  • the housing carrying the stops is shifted a short distance in the tabulating direction, and the stop is permitted to return to its initial position.
  • the escapement pawl is actuated to engage the escapement gear for stopping the paper carriage.
  • Another object of the invention is to provide a tabulating apparatus of extremely simple construction which reliably stops the carriage in a desired position.
  • Another object of the invention is to eliminate the function of the escapement pawl during tabulating operations.
  • Another object of the invention is to stop and lock the paper carriage in a desired tabulated position by a locking member which is operated by the impact of the tabulated carriage and directly engages the escapement gear.
  • the present invention relates to an improvement in tabulating apparatus for typewriters having a paper carriage, a rack bar on the paper carriage, an escapement gear cooperating with the rack, and an escapement pawl cooperating with the escapement gear during stepwise operation of the paper carriage.
  • One embodiment of the invention comprises a paper carriage biased to move in a tabulating direction and having at least one tab moving along a path with the carriage, control means mounted on supporting means for limited movement in the tabulating direction and including stop means settable to be located in the path of movement of the tab on the paper carriage, an escapement gear meshing with the rack bar of the paper carriage, and a locking member positively connected with the control means and being movable between a normal position of rest spaced from the escapement gear and a locking position engaging and locking the same.
  • the control means When the tab moving with the paper carriage in the tabulating direction engages the stop means, the control means is displaced in the tabulating direction and then stopped by an abut-ment. Due to the this displacement of the control means, the locking member is displaced from its normal position of rest, into which it is biased by a spring, to the locking position and locks the escapement gear and thereby the paper carriage in a tabulated position determined by the positions of the tab and of the stop means.
  • the escapement pawl which cooperates with escapement gear during the stepwise movement of the carriage, is not used for stopping the tabulating movement of the carriage
  • the locking member can be constructed as a rigid, preferably double-armed lever pivotally mounted on the support means and having one arm located in a cutout of the control means, and a locking arm cooperating with the escapement gear and having such a shape as to match the shape of the teeth of the escapement gear so that the same is firmly and precisely locked for stopping the carriage in the desired tabulated position.
  • FIG. 1 is a fragmentary vertical sectional view and side elevation illustrating a tabulating apparatus according to the invention
  • FIG. 2 is a fragmentary plan view of the embodiment of FIG. 1;
  • FIG. 3 is a fragmentary front view, partially in section, illustrating the locked condition of the escapement gear
  • FIG. 4 is a fragmentary front view, partially in section, on line IVIV in FIG. 2 illustrating the escapement gear in a position released by the locking member.
  • a tabulator control means 1 has a row of slots 2a receiving stops 2 and is mounted within a tabulator housing 4 which is carried by supporting means 3.
  • Control means 1 carries two projecting abutment pins, 1a, 1b which are respectively located in slots 4a, 4b in housing 4, so that control means 1 is mounted on supporting means and housing 4 for limited movement between two terminal positions in which pins 1a, 1b abut, respectively, the ends of slots 4a, 4b.
  • the paper carriage 20 of the typewriter carries the bar 5 on which tabs 6 are mounted settable between an inoperative position and a lower operative position cooperating with stop means 2.
  • FIG. 1 shows one tab 6a in the set operative position.
  • a spring 5a is mounted on bar 5 to arrest the tabs in one or the other position.
  • a tab 6a is shown in the operative position in which it moves with the carriage along a path in which the tabulator stop means 2 is located, if the latter is in the operative position.
  • a pivot means 7 is mounted on supporting means 3 and mounts a double-armed locking lever 8 for angular movement.
  • a spring 11 connects the arm 8c of locking lever 8 with an eye 3a on supporting means 3 so that locking lever 8 is biased to assume the normal position of rest illustrated in FIG. 2.
  • a washer 9 on pivot means 7 prevents axial movement of locking lever 8.
  • the shorter arm 8a of locking lever 8 has an upwardly bent projecting coupling portion 8b which is located within a cutout 1c in control means 1, positively engaging the lateral walls of the same.
  • the biasing force of spring 11 acts through locking lever 8 on control means 1 to urge the same to the terminal position shown in FIG. 2 in which pins 1a, 1b abut one pair of ends of slots 4a, 4b which form abutment means.
  • the action of spring 11 eliminates play of coupling projection 8b in the coupling cutout 1c.
  • the typewriter is provided with the standard escapement mechanism which is not illustrated in detail for the sake of simplicity, only the escapement gear 12 being shown connected by a shaft 1211 with a gear 12b which in the usual manner meshes with the rack bar 21 on the schematically illustrated paper carriage 20 and cooperates with escapement pawl means, not shown, which are operated by the universal bar, not shown, of the typewriter when the carriage is to be stepwise shifted.
  • the escapement pawl not shown, is not used for stopping the carriage after a tabulating movement, for which purpose the locking lever 8 is used.
  • Locking lever 8 has a locking projection or portion 10, and the end of locking arm 80 is bent to form a U-shaped end portion from which locking projection 10 projects.
  • locking lever 8 is forced to perform an angular movement in counterclockwise direction so that the locking projection 10, moving in a locking direction toward gear 12, engages a corresponding recess between two teeth of escapement gear 12 which is stopped so that the paper carriage 20 is stopped in the correct position by gear means 12, 12a, 12b, and 21.
  • Locking portion moves a predetermined distance which is proportionate to the given distance of movement of control means 1 determined by abutment pins 1a, 1b and slots 4a, 4b in the ratio of arms 8a and 8c of locking lever 8. A bouncing back of the paper carn'age is not possible, and the escapement pawl, not shown, engages the stopped escapement gear 12, and need not sustain the substantial forces required for stopping the tabulated carriage.
  • Tabulating apparatus comprising, in combination, carriage means biassed to move in a tabulating direction, and having at least one tab moving along a path with said carriage means; supporting means; a control member mounted on said supporting means for movement in said tabulating direction and including at least one stop settable to be located in said path; abutment means for limiting movement of said control member in said tabulating direction to a given distance so that said control member is displaced said given distance when said tab engages said stop; an escapement gear operatively connected with, and driven by said carriage means during movement of said carriage means; a locking member including a coupling portion positively connected with said control member for movement therewith over said given distance, and a locking portion moving a predetermined distance in a locking direction when said coupling portion moves said given distance; and mounting means mounting said locking member on said supporting means for movement between a normal position of rest in which said locking portion is spaced said predetermined distance in said locking direction from said escapement gear, and a locking position in which said locking portion directly engages and locks said escapement gear,
  • T abulating apparatus as claimed in claim 1 wherein said mounting means include a pivot means on said supporting means for supporting said locking member for angular movement between said position of rest and said locking position.
  • Tabulating apparatus including a spring connecting said locking member with said supporting means for biassing said locking member to turn to said position of rest.
  • Tabulating apparatus including means for biassing said control member in a direction opposite to said tabulating direction; and wherein said abutment means stop movement of said control member in two terminal positions, said locking member being in said locking position when said control member has moved in said tabulating direction to one of said terminal positions.
  • abutment means include at least one abutment pin secured to said control member; and wherein said supporting means has at least one slot extending in said tabulating direction, said abutment pin being movable in said slot for limiting movement of said control member in two terminal positions, said locking member being in said locking position when said control member has moved in said tabulating direction to one of said terminal positions.

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US564283A 1965-07-10 1966-07-11 Tabulating apparatus for directly locking an escapement gear Expired - Lifetime US3428159A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEO8282U DE1922542U (de) 1965-07-10 1965-07-10 Sperrvorrichtung fuer dezimal-hafttabulatoren in schreib- oder aehnlichen maschinen.

Publications (1)

Publication Number Publication Date
US3428159A true US3428159A (en) 1969-02-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
US564283A Expired - Lifetime US3428159A (en) 1965-07-10 1966-07-11 Tabulating apparatus for directly locking an escapement gear

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US (1) US3428159A (OSRAM)
DE (1) DE1922542U (OSRAM)
NL (1) NL6608846A (OSRAM)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777870A (en) * 1970-09-16 1973-12-11 Olympia Werke Ag Escapement controlling tabulating apparatus
US3985220A (en) * 1970-10-23 1976-10-12 Olympia Werke Kg Tabulator apparatus for a typewriter carriage moving in steps of different length
US4348124A (en) * 1980-06-27 1982-09-07 International Business Machines Corporation Tabulation rack with spring pin holding
US20060102712A1 (en) * 2004-11-12 2006-05-18 Chazem Manufacturing, Llc Chute transition frame and chute system incorporating the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4348123A (en) * 1980-06-27 1982-09-07 International Business Machines Corporation Tabulation rack with spring pin holding

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US936229A (en) * 1906-01-18 1909-10-05 Ferdinand Schrey Type-writing machine.
US2885052A (en) * 1955-04-07 1959-05-05 Underwood Corp Device to locate a typewriter carriage at multi-incremental feed stations
US2945578A (en) * 1955-07-23 1960-07-19 Olivetti & Co Spa Variable spacing mechanism for typewriters
US2984328A (en) * 1957-01-17 1961-05-16 Royal Mcbee Corp Carriage positioning mechanism for typewriters or like machines
US3269511A (en) * 1963-08-12 1966-08-30 James F Smathers Typewriter carriage positioning mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US936229A (en) * 1906-01-18 1909-10-05 Ferdinand Schrey Type-writing machine.
US2885052A (en) * 1955-04-07 1959-05-05 Underwood Corp Device to locate a typewriter carriage at multi-incremental feed stations
US2945578A (en) * 1955-07-23 1960-07-19 Olivetti & Co Spa Variable spacing mechanism for typewriters
US2984328A (en) * 1957-01-17 1961-05-16 Royal Mcbee Corp Carriage positioning mechanism for typewriters or like machines
US3269511A (en) * 1963-08-12 1966-08-30 James F Smathers Typewriter carriage positioning mechanism

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777870A (en) * 1970-09-16 1973-12-11 Olympia Werke Ag Escapement controlling tabulating apparatus
US3985220A (en) * 1970-10-23 1976-10-12 Olympia Werke Kg Tabulator apparatus for a typewriter carriage moving in steps of different length
US4348124A (en) * 1980-06-27 1982-09-07 International Business Machines Corporation Tabulation rack with spring pin holding
US20060102712A1 (en) * 2004-11-12 2006-05-18 Chazem Manufacturing, Llc Chute transition frame and chute system incorporating the same
US7472779B2 (en) * 2004-11-12 2009-01-06 Chazem Manufacturing, Llc Chute transition frame and chute system incorporating the same

Also Published As

Publication number Publication date
DE1922542U (de) 1965-09-02
NL6608846A (OSRAM) 1967-01-11

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