US3727742A - Adjustable blocking means for typing and printing mechanisms - Google Patents

Adjustable blocking means for typing and printing mechanisms Download PDF

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Publication number
US3727742A
US3727742A US00045771A US3727742DA US3727742A US 3727742 A US3727742 A US 3727742A US 00045771 A US00045771 A US 00045771A US 3727742D A US3727742D A US 3727742DA US 3727742 A US3727742 A US 3727742A
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US
United States
Prior art keywords
blocking
ball block
lever
block
blocking means
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
US00045771A
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English (en)
Inventor
H Fuchs
A Rix
G Werner
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 US3727742A publication Critical patent/US3727742A/en
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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
    • 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
    • B41J5/18—Locks
    • B41J5/22—Interlocks between keys, e.g. without detent arrangements

Definitions

  • the blocking means is a member such as a ball block mounted on a lever for pivoting movement to vary the position of the blocking member relative to the type actuating means during the normal operation of the machine.
  • a ratchet is provided to fix the blocking member in the desired posit1on.
  • Such blocking means are known as keyboard locks for the elimination of typebar lever blocking, which place an excessive stress on the mechanism and lead to malfunctions therein. The simultaneous depression of a plurality of keys is prevented in this way, but no adjustment of the block or of the members to be blocked is possible. These blocking means are permanently set in place during the assembly of the machines.
  • the configuration of the blocking arms of the levers falling into the ball block permits a controlling influence to be exerted on the functions of the individual mechanism in such a manner that during the movement of one mechanism a second mechanism is placed into the block for overlapping play and a third can be genuinely stored in a waiting position.
  • SUMMARY OF THE INVENTION ltis an object of the present invention to provide typing and printing mechanisms having a blocking means in which the blocking and'storage times of the actuatable members can be controlled in the simplest manner.
  • this object is accomplished in that theeffect of theblocking means can be varied during normal operation.
  • This variation need not necessarily be accomplished by a mechanic, but can be done 'by the typist at his desk in a most simple manner.
  • a detailedembodiment of the present invention provides that the blocking membersa're disposed to be adjustable and arrestable with respect to one another so that the blocking and storage times of the actuatable members can be varied. Consequently, the typist can determine the blocking and storage times of the parts to be blocked. This is done in the simplest manner by mounting the blocking means to be adjustable and arrestable. If the blocking means is found to be annoying by the typist, it can be moved completely out of the operative range of the actuatable members.
  • a further advantageous feature of the present invention is that the blocking means is constructed as a known ball block associated with a setting lever which is rotatably mounted on the machine housing and which coacts with a ratchet.
  • the operation of this device is extremely simple.
  • edge of the blocking arm of the intermediate member which first enters into the ball block is designed to be approximately parallel to the displacement direction of the block when the intermediate member is in its rest position. This assures that it is not the waiting positions of the intermediate members being stored, but rather the period of release of the ball block, which can be varied by the blocking arms of the intermediate members.
  • the members to be blocked'can also be designed to be displaceable and arrestable.
  • FIG. I is a perspective, partly schematic, partly cross-sectional view of a typing machine having a ball block, with the adjustable mounting thereof according to the present invention omitted.
  • FIG. 2 is a side elevation view, on a much larger scale and partly in cross section, of a portion of FIG. 1, including the adjustable mounting for the ball block.
  • FIG. 3 is a front elevation view, partly in cross section, of the ball block of FIGS. 1 and 2.
  • FIG. 4 is a side elevation view of a lever with a pivotal blocking arm.
  • the intermediate member is inth'e form of a lever 11 provided with a slot 11'.
  • the slot 11' is defined by a curved control surface 13 which in turn includes a basic detent portion 14, a storage detent portion 15 and an inserted portion
  • the storage portion 15 lies between the portions 14 and 15.
  • the lever 11 is mounted on a shaft 12, and is designed, as illustrated in FIG. 2, to have, relative to shaft 12, a basic detent, or rest, position, a storage detent, or released, position and an inserted, or released, position.
  • the basic detent position is achieved when the shaft 12 is in engagement with the basic detent portion 14 of the surfacel3, while the storage detent position is achieved when the shaft 12 is in engagement with the storage detent portion 15 and the inserted position is achieved when the shaft 12 is in engagement with the inserted portion 15'.
  • the lever 1 l also has an abutment surface 16, .a control tongue 17, a blocking arm 18 and an abutment tongue 19. The function of each of these portions of lever 11 will be set out below.
  • a leaf spring comb 21 is provided which includes a number of laminated springs 20. Each of the springs 20 is associated with a respective one of the levers 11 in the machine. Only two springs 20 are shown in FIG. 1 for clarity.
  • the leaf spring comb 21 is permanently connected to the machine housing by suitable, well-known means (not shown) and is arranged so that the end portion 20' of each spring 20 is in contact with theabutment surface 16 of a respective lever 11. Thus, the springs 20 continuouslybias the levers l l.
  • a cam member 22 is rotatably mounted on each lever 2.
  • the cam member 22 is provided with a drive cam surface 23 and a curved control surface 24 bearing contact points 25, 26 (FIG. 2).
  • a known intermediate lever bearing block 27 (FIG. 2) is rigidly mounted in the machine housing by wellknown means, and a known ball block 28 is slidably mounted in a slot 29" formed in the block 27 for ad justment in the direction of the opposed arrows of FIG. 2.
  • the ball block 28 includes a basic element 29 provided with a groove 29 in which a plurality of balls 31 are guided, and a releasable cover plate 32 which per-.
  • the cover plate 32 may be releasably attached to the element 29 by any suitable well-known means.
  • the basic element 29 fits within a slot 29" and is provided with a plurality of guide pins 33 which engage in a like number of correspondingly designed guide slots 43 formed in the intermediate lever bearing block 27. It is noted that only one pin 33 and slot 43 are shown in FIG. 2.
  • the row of balls 31 is held in a center operating position by a pair of coil springs 44 and 45 (FIG. 3). This spring suspension has the advantage that the inser tion of the blocking arm 18 of the lever 11 is always done with the same force; the same number of balls 31 always being displaced.
  • a setting lever 36 is pivotally mounted on a shaft 37 which is rigidly fastened to the bearing block 27.
  • a guide slot 38 is formed at the lower end of the setting lever 36.
  • a pin 39 is permanently connected to the basic element 29 and engages into the guide slot 38 of the setting lever 36.
  • a pin 40 is mounted on the setting lever 36 and coacts with a correspondingly configured ratchet 41.
  • the ratchet 41 is rigidly attached to a part of the machine frame (not shown).
  • the blocking arm 18 has a blocking tongue 34 which defines an edge 35 (FIG. 2).
  • the edge 35 is oriented to be substantially parallel to the direction of adjustment
  • the lever 46 is provided with a threaded bore 49 for.
  • lever 46 is with the exception of the blocking arm 50 and its associated elements 48, 49 and 51 similar to lever 11, that is, reference numerals 11", 16, 17, 19 and 30 refer to portions on lever 46 which are similar to the portions referred to by reference numerals 11, 16, 17, 19 and 30 on lever l 1.
  • the power roll 42 acts on the drive cam surface 23 of cam 22 so as to rotate cam 22 counterclockwise and sublever 2 about shaft 3.
  • Lever 2 pivots in a clockwise direction, which actuates link 4 and'causes the respective typebar 5 to print its particular character.
  • the cam surface 24 moves the abutment arm 19 of the intermediate lever 11 against a transverse bar 27 and thereafter back to its rest mode, where control tonsecond key lever 7 is actuated, a second lever 11 is put into its released mode. This second lever 11 is urged against the ball block 28 and is in fact stored.
  • the blocking arm 18 of the second lever 11 does not move into the ball block 28 between two balls 31, but, rather, moves out of its basic detent position to a position where the shaft 12 engages the storage detent portion 15, with the lever 11 under the influence of its respective spring 20.
  • the ball block 28 is released or disengaged by the movement of the blocking arm 18 of the first lever 11 out from between the balls 31, the blocking arm 18 of the second, or stored, lever 11, due to the force of its respective spring 20, automatically moves in between a pair of the balls 31.
  • the type printing cycle set out above is then repeated.
  • This release of the ball block 28 when the typebar actuating mechanism returns is controllable according to the present invention because the ball block 28 is adjustable.
  • Each typist can individually set the ball block 28. The adjustment is accomplished by means of the setting lever 36, which encloses the pin 39 with its guide slot 38 formed therein and which correspondingly displaces the basic element 29, including the ball block 28.
  • the ball block 28, however, can also be pivoted entirely out of the effective range of the blocking arms 18 of levers 11.
  • the position of setting lever 36 can be fixed by ratchet 41.
  • the particular construction of the setting lever 36, pin 40 and ratchet 41 enables the ball block 28 to be adjusted along a path indicated by the opposed arrows in FIG. 2.
  • the pin 39 of the ball block 28 engages in the guide slot 38 defined in the lower end of the setting lever 36 and enables the ball block 28 to slide in slot 29" of the bearing block 27.
  • the blocking arms 18 of the levers 11 will not be blocked by the balls 31 when more than one lever 11 is in its released mode.
  • the present invention can be employed and applied wherever pulses given manually by less skilled typists or typists not yet familiar with the machine are to be positively transmitted to the typebars 5 in the proper sequence.
  • said blocking means is a ball block
  • said means connected to said blocking means includes a setting lever and a ratchet, said setting lever being rotatably mounted and coacting with said ratchet and coupled to said ball block varying the position of said ball block.
  • the blocking means is formed as a ball block having a basic element including pin means, said basic element defining a groove, a plurality of balls arranged in and guided by the groove, and a releasable cover plate fitted in the groove, and the improvement comprising means for continuously adjustably and arrestably mounting said ball block including a bearing block for mounting said ball block and slots defined in said bearing block within which a portion of said pin means are engaged for guiding said ball block, means for selectively varying the position of said ball block relative to the type actuating means, said selectively varying means being connected to said ball block and including a setting lever rotatably mounted to said bearing block and a ratchet, said setting lever including a slot formed therein within which another portion of said pin means is engaged to couple said ball block to said setting lever, said setting lever and ratchet coact to selectively vary the position of said
  • said edge is oriented to be substantially parallel to the direction of adjustment of said ball block when said actuatable member is in a rest position, thereby influencing the functioning of the individual actuatable members in a controlling manner, said means for continuously adjustably and arrestably mounting said ball block in conjunction with said blocking arms serving to vary the blocking and storage times of said actuatable members.

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US00045771A 1969-06-14 1970-06-12 Adjustable blocking means for typing and printing mechanisms Expired - Lifetime US3727742A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1930362A DE1930362C3 (de) 1969-06-14 1969-06-14 Kraftangetriebenes Schreib- oder Druckwerk mit einer Sperrvorrichtung

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US3727742A true US3727742A (en) 1973-04-17

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DE (1) DE1930362C3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080119853A1 (en) * 2006-11-21 2008-05-22 Jeffrey Felt Methods and apparatus for minimally invasive modular interbody fusion devices

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US606944A (en) * 1898-07-05 Interlocking device for
US1614473A (en) * 1924-04-03 1927-01-18 Woodstock Typewriter Co Power-operated typewriter
US1932914A (en) * 1931-12-08 1933-10-31 Dothan L Shelton Typewriting machine
US1963285A (en) * 1934-06-19 Computing and typewriting machine
US2236413A (en) * 1939-12-26 1941-03-25 Pirnat Fred Typewriter key guide
DE1106777B (de) * 1960-06-30 1961-05-18 Ernst Truempelmann Tastensperre fuer Schreibmaschinen und aehnliche, durch Tasten bedienbare Maschinen
US3026984A (en) * 1957-08-15 1962-03-27 Dothan L Shelton Syllabic typewriting machine
US3086635A (en) * 1961-07-14 1963-04-23 Ibm Keylever storage mechanism
US3152759A (en) * 1964-10-13 Interlocked open keyboards with electric restoring
US3181680A (en) * 1963-05-14 1965-05-04 Scm Corp Power control apparatus in a data transferring device
US3191740A (en) * 1962-07-24 1965-06-29 Royal Mcbee Corp Keylever signal storing mechanism
US3353646A (en) * 1966-09-14 1967-11-21 Ibm Typewriter having means to store characters selected during carriage movements

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US606944A (en) * 1898-07-05 Interlocking device for
US1963285A (en) * 1934-06-19 Computing and typewriting machine
US3152759A (en) * 1964-10-13 Interlocked open keyboards with electric restoring
US1614473A (en) * 1924-04-03 1927-01-18 Woodstock Typewriter Co Power-operated typewriter
US1932914A (en) * 1931-12-08 1933-10-31 Dothan L Shelton Typewriting machine
US2236413A (en) * 1939-12-26 1941-03-25 Pirnat Fred Typewriter key guide
US3026984A (en) * 1957-08-15 1962-03-27 Dothan L Shelton Syllabic typewriting machine
DE1106777B (de) * 1960-06-30 1961-05-18 Ernst Truempelmann Tastensperre fuer Schreibmaschinen und aehnliche, durch Tasten bedienbare Maschinen
US3086635A (en) * 1961-07-14 1963-04-23 Ibm Keylever storage mechanism
US3191740A (en) * 1962-07-24 1965-06-29 Royal Mcbee Corp Keylever signal storing mechanism
US3181680A (en) * 1963-05-14 1965-05-04 Scm Corp Power control apparatus in a data transferring device
US3353646A (en) * 1966-09-14 1967-11-21 Ibm Typewriter having means to store characters selected during carriage movements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080119853A1 (en) * 2006-11-21 2008-05-22 Jeffrey Felt Methods and apparatus for minimally invasive modular interbody fusion devices

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Publication number Publication date
DE1930362B2 (de) 1972-03-23
DE1930362C3 (de) 1974-06-27
DE1930362A1 (de) 1970-12-17

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