US2866532A - Typewriting and book-keeping machine provided with decimal tabulating mechanism - Google Patents

Typewriting and book-keeping machine provided with decimal tabulating mechanism Download PDF

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Publication number
US2866532A
US2866532A US482353A US48235355A US2866532A US 2866532 A US2866532 A US 2866532A US 482353 A US482353 A US 482353A US 48235355 A US48235355 A US 48235355A US 2866532 A US2866532 A US 2866532A
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US
United States
Prior art keywords
key
typewriting
lever
machine
book
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
US482353A
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English (en)
Inventor
Martin Hans
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.)
Alpina Buromaschinen Werk G M
ALPINA BUROMASCHINEN-WERK GmbH
Original Assignee
Alpina Buromaschinen Werk G M
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 Alpina Buromaschinen Werk G M filed Critical Alpina Buromaschinen Werk G M
Priority to US482353A priority Critical patent/US2866532A/en
Application granted granted Critical
Publication of US2866532A publication Critical patent/US2866532A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/02—Key actions for specified purposes
    • B41J25/18—Tabulating
    • 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
    • B41J5/00—Devices or arrangements for controlling character selection
    • B41J5/08—Character or syllable selected by means of keys or keyboards of the typewriter type
    • B41J5/28—Multiple-action keys, e.g. keys depressed by two or more amounts or movable in two or more directions to effect different functions or selections

Definitions

  • the present invention relates to a typewriting and bookkeeping machine provided with a decimal tabulating mechanism.
  • a mechanism of this kind can be used to advantage for the writing of figure columns.
  • a mechanism of this kind can be used to advantage for the writing of figure columns.
  • the typist actuates the decimal tabulator key 1000 and thereby releases the paper carriage for motion or travel until it is stopped, four stops before the comma place, by a tabulator stop actuated via a mechanism by the decimal tabulator key.
  • the key-heads of the decimal tabulator keys are so arranged that they form a tabulator-key-row positioned outside of the typewriter keyboard, so that these decimal tabulator keys can be used only for tabulating purposes.
  • the invention overcomes all of these disadvantages of known machines by devising the typewriting and bookkeeping machine in such a way that its key-heads are enabled to serve the double purpose of typewriting and tabulating, whereby the key-heads are rigidly connected to the key-levers, and whereby the key-levers are so devised and arranged that they control, through an additional longitudinal displacement, also the tabulating mechanism.
  • Figs. 1 and 2 are side-views of the typewriting and decimal tabulating mechanism; the machine-frame having been removed for clearness of illustration;
  • Fig. 3 is a top-view of a detail of the transmission means of the tabulating mechanism
  • Figs. 4 and 5 are fractional perspective views of the tabulator-key-row of the typewriting machine.
  • the reference numeral 1 designates a typewriter key-lever carrying at its forward end a key-head 2 and provided at its rear end with an elongated hole or slot 3.
  • the typewriter key-lever 1 is rotatably mounted on a pivot bar 4 supported by the machine-frame 5.
  • the rear end of the typewriter keylever 1 terminates in an angle-arm 6 in which engages a return spring 7 fastened to a hook 8 which is rigidly secured to the machine-frame 5.
  • the return spring 7 pulls the typewriter key-lever 1 in the direction of the key-head 2 and simultaneously presses it against a stop 9 provided in the machine-frame 5.
  • the anglearm 6 of the typewriter key-lever 1 has a hook-shaped end 10 engaging in the elongated hole or slot 11 (see Fig. 3) of a connecting rod 12 which is pivoted to one end of a double-armed lever 13.
  • the double-armed lever 13 is pivotally supported on a bolt 14 provided in the machine-frame 5 and has its other end pivotally fastened to a rod 15.
  • the rod 15 slides on a projecting portion 16 of the machine-frame 5 and has its end, which is turned away from the double-armed lever 13, provided with guiding means 17, in which engages an arm 19 of an angle-lever 18.
  • the angle-lever 18 is rotatably mounted on a pivot bar 20 provided in the machine-frame 5 and engages with its second arm 21 in the guiding means of a vertically shiftable stop 22 arranged in the machineframe.
  • the typewriter key-lever 1 is connected in per se known manner via pull means 23, a double-armed lever 24 rotatably supported by the machine-frame 5, and a second pull member 25, with the type-bar 26 rotatably supported by the machine-frame 5.
  • the key-head 2 has, at the side facing the operator of the machine, a practically vertically extending face portion 27, on which is provided a' tabulating mark 28 (see Fig. 4).
  • the typewriting or book-keeping machine is provided with a plurality of juxtaposed typewriter key-levers 1 as described above and with stops 22 which by means of the transmission mechanism, consisting of the connecting rods 12, 15, double-armed lever 13 and the angle-lever 18, are connected with a typewriter key-lever 1. It is preferably the lowermost row of the board of keys which is devised as hereinbefore described (see Figs. 4 and 5).
  • a horizontal plate .29 Positioned in the vicinity of the angle-arm 6 of the typewriter key-lever 1 and separated from the anglearm 6 only by a small gapis a horizontal plate .29 which extends throughout the entire width of the key-board.
  • the plate 29 is rigidly secured to a release arm 30 which, after thefashion of a double armed lever, is rotatably v supported in its middle on a pivot-bar 31 provided in the machine-frame 5.
  • a release head 32 Provided at the upper end of the release arm 30 is a release head 32 which rests against the collar of a gear wheel 33.
  • the gear wheel 33 is shiftably supported on an axle 34.
  • the axle 34 is supported by a paper carriage guide 35 which is detachably secured to the machine-frame 5.
  • the gear wheel 33 is toothed at its front face and forced by means of a pressure spring 36, mounted on the axle 34, against a stepped gear wheel 37 which is likewise toothed at its front face and freely rotatably, but axially shiftably, seated on the axle 34.
  • a pressure spring 36 mounted on the axle 34
  • a stepped gear wheel 37 which is likewise toothed at its front face and freely rotatably, but axially shiftably, seated on the axle 34.
  • the paper carriage moves on balls 38 the paper carriage 39 provided with a roller 41 mounted on supports 40.
  • the paper carriage carries at its underside a rack 42 which is in engagement with the shiftable gear wheel 33.
  • a ratchet 43 which is rockably mounted in the machine-frame and which prevents the stepped gear wheel 37 from rotating.
  • a skip key-lever 46 mounteded'on the paper car- ;igge 39 are holding means 44 for the per seknown slides Rotatably supported on the pivot bar 31 is further a skip key-lever 46, carrying at its forward end a key head 47.
  • a skip key-lever 46 Provided in the rear end of the skip-key-lever 46 is an elongated hole 48 in which engages the hook-shaped head of a connecting rod 49.
  • the other end of the connecting rod 49 is rotatably coupled to the plate 29.
  • the typewriter key-levers 1 When the typing goes on, the typewriter key-levers 1 are, through pressure exerted upon the key-heads 2, displaced in customary manner in downward direction, as indicated by the arrow in Fig. 1 (see dotted-line-position in Fig. 5). The result is that the typewriter key-lever 1 is rotated about the bar 4 and that the type-bar 26 is rotated by means of the pull members 23, 25 and the double-armed lever 24 in the direction toward the roller 41. Upon release ofthe key-heads 2 by the fingers of the operator, the return spring 7 returns the typewriter key lever 1 to its position of rest, in which it rests against the stop 9.
  • the respective key-head 2 For tabulating, the respective key-head 2 must be displaced in horizontal direction toward the bar 4 as indicated by the arrow (see Fig. 1) through pressure exerted against the key-head by the thumb of the operator. The result is that the typewriter key-lever 1 is likewise displaced in rearward direction (see dotted-line-position in Fig. 4). During this displacing movement the typewriter key-lever 1 and the transmission mechanism and stop 22 are displaced into the position illustrated in Fig. 2 in the following manner:
  • the connecting rod 12 has to follow the movement of the typewriting key-lever 1 and thus rotates the doublearmed-lever 13.
  • the latter pulls the rod in the direction toward the key-board and thus rotates the anglelever 18, so that the stop 22 is displaced in upward direction.
  • the typewriting key-lever 1 hits with its angle-arm 6 against the plate 29 and thereby rotates the release arm 30.
  • the latter displaces with its head 32 the gear wheel 33 provided with a collar against the pressure of the spring 36 on the axle 34 and thus moves the gear wheel 33 out of engagement'with the stepped gear wheel 37 and with the rack 42.
  • the typewriter key-lever 1 After release of the key-head 2 by the thumb of the operator, the typewriter key-lever 1 is returned by the return spring 7 to starting position, so that the gear wheel 33 is again moved by the pressure spring 36 into engagement with the rack 42 and the stepped gear wheel 37. As the ratchet 43 locks the stepped gear wheel 37 against rotation. the carriage 39 is thereby again locked up in its position. In addition to this, the stop 22 is likewise returned in downward direction to starting position.
  • the skip key-lever 46 In order to be able to skip, according to requirements, any desired number of figure columns, there is arranged, beside the typewriting key-levers, the skip key-lever 46. Through pressure exerted by the finger upon the key-head 47, the skip key-lever 46 is moved into the position indicated in dotted lines in Fig. 1, whereby the skip key-lever 46, connected with the plate 29 by means of the rod 49, rotates the release arm 30 and thereby releases in the afore-described manner the paper carriage 39 for its movement according to requirements.
  • the tabulating marks 28 are arranged either on the face portions 27 of the key-heads (as shown in Fig. 4), or on the space key 50 in front of the appertaining keyhead 2 (as shown in Fig. 5). It will be noticed, therefore, that in the novel type of typewriting or book-keeping machine as hereinbefore described, the keys as well as the entire construction of the machine remain essentially unchanged, as for the actuation of the tabulating means the already existing key-levers of the typewriter key-board are used. During the operation of the machine it is possible to typewrite, and then to tabulate in accord with the decimal place immediately afterwards, whereby the typist can leave her hands in typing position and simultaneously actuate the decimal tabulating means with her thumb. In this way, the fingers overstrained already by the typewriting, are not burdened with the work of tabulating, which work is performed by those fingers of the hand which are most powerful and therefore best suited for this kind of work, viz. the thumbs.
  • the present invention is not confined for use exclusively in typewriting or book-keeping machines, but can be used in all kinds of machines which serve a similar purpose and are provided with a tabulating device.
  • a carriage stop device including vertically movable members, key-levers individually operatively connected with said type-bars and being vertically rockable for actuating said type-bars, and mechanisms permanently individually interconnecting said members with vertically rocking portions of said key-levers, said key-levers being capable of individual longitudinal movement for actuating said mechanisms and vertically moving said members upon longitudinal movement of saidkeylevers.
  • a carriage stop device includ' ing vertically movable members, key-levers individually operatively connected with said type-bars and being vertically rockable for actuating said type-bars, and mechanisms individually operatively connected with said members and individually including horizontally movable elements which are individually movably, permanently connected with vertically rocking portions of said keylevers, said key-levers being capable of individual horizontal longitudinal movemet indvidually moving said elements for actuating said mechanisms and vertically moving said members upon longitudinal movement of said key-levers.
  • said key-levers including means movably connected with said elements and affording individual vertical movement of said key-levers relatively to said elements.

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  • Accessory Devices And Overall Control Thereof (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
US482353A 1954-12-13 1955-01-17 Typewriting and book-keeping machine provided with decimal tabulating mechanism Expired - Lifetime US2866532A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US482353A US2866532A (en) 1954-12-13 1955-01-17 Typewriting and book-keeping machine provided with decimal tabulating mechanism

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB35997/54A GB772630A (en) 1954-12-13 1954-12-13 Improvements in or relating to typewriters, accounting and like machines
US482353A US2866532A (en) 1954-12-13 1955-01-17 Typewriting and book-keeping machine provided with decimal tabulating mechanism

Publications (1)

Publication Number Publication Date
US2866532A true US2866532A (en) 1958-12-30

Family

ID=10383830

Family Applications (1)

Application Number Title Priority Date Filing Date
US482353A Expired - Lifetime US2866532A (en) 1954-12-13 1955-01-17 Typewriting and book-keeping machine provided with decimal tabulating mechanism

Country Status (5)

Country Link
US (1) US2866532A (de)
BE (1) BE534196A (de)
CH (1) CH325482A (de)
FR (1) FR1113704A (de)
GB (1) GB772630A (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US477054A (en) * 1892-06-14 Harry c
US839503A (en) * 1902-08-22 1906-12-25 Williams Typewriter Company Type-writing machine.
US926149A (en) * 1909-06-29 Alexander T Brown Type-writing machine.
US940395A (en) * 1901-01-09 1909-11-16 Union Typewriter Co Tabulating device for type-writers.
US997622A (en) * 1911-02-27 1911-07-11 Harold Jarvis Tabulating attachment for type-writers.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US477054A (en) * 1892-06-14 Harry c
US926149A (en) * 1909-06-29 Alexander T Brown Type-writing machine.
US940395A (en) * 1901-01-09 1909-11-16 Union Typewriter Co Tabulating device for type-writers.
US839503A (en) * 1902-08-22 1906-12-25 Williams Typewriter Company Type-writing machine.
US997622A (en) * 1911-02-27 1911-07-11 Harold Jarvis Tabulating attachment for type-writers.

Also Published As

Publication number Publication date
GB772630A (en) 1957-04-17
BE534196A (de) 1958-07-18
FR1113704A (fr) 1956-04-03
CH325482A (de) 1957-11-15

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