US3666071A - Adjustable paper carriage assembly - Google Patents

Adjustable paper carriage assembly Download PDF

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Publication number
US3666071A
US3666071A US855133A US3666071DA US3666071A US 3666071 A US3666071 A US 3666071A US 855133 A US855133 A US 855133A US 3666071D A US3666071D A US 3666071DA US 3666071 A US3666071 A US 3666071A
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US
United States
Prior art keywords
threaded
carriage
carriage support
supporting means
platen
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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
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US855133A
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English (en)
Inventor
Horst Purr
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 US3666071A publication Critical patent/US3666071A/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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/20—Platen adjustments for varying the strength of impression, for a varying number of papers, for wear or for alignment, or for print gap adjustment

Definitions

  • a paper carriage support is mounted on the supporting frame 2 Cl of a typewriter for angular movement about an axis parallel to [51] Int Cl. u the direction of movement of the carriage and to the axis of 58 Field ofSearch ..197/60, 149,80 the adiusling device including adjusting screws and stop screws, exactly determines the desired angular posi- 56] References Cited tion of the carriage support in relation to the supporting frame, so that the impact area of the platen can be moved in UNITED STATES PATENTS the direction of the path of movement of the types of type levers whereby the rebound distance of the types is adjusted. 550,473 11/1895 Bigelow ..197/80 349,349 9/1886 Jenne .L ..197/60 11 Claims, 2 Drawing Figures Patented May 30, 1972 3,666,071
  • the rebound adjustment devices according to the prior art are comparatively complicated, so that a uniform adjustment of the carriage with the platen is rather difficult.
  • Another object of the invention is to provide a rebound distance control arrangement of extremely simple construction which can be adjusted by unskilled persons.
  • the present invention provides a carriage support which is mounted on the supporting frame of the typewriter for movement about an axis parallelto the axis of the platen, and which can be angularly displaced about this axis and locked in the angular adjusted position.
  • One embodiment of the invention comprises a paper carriage including a platen having an impact area located in the path of movement of the types of a typewriter; a carriage support having guide means supporting the paper carriage for movement in the direction of the platen; means mounting the carriage support on the supporting means of the typewriter for angular movement with the paper carriage and platen about an axis parallel to the platen; and an adjusting device connected with the supporting means and with the carriage support for angularly displacing the carriage support with the paper carriage and with the platen, and for holding the same in a selected angular position.
  • the impact area is placed in a selected adjusted position in the path of movement of the types.
  • the carriage support is mounted by means of pivot screws on the supporting means of the typewriter.
  • the adjusting device includes a pair of adjusting screws having threaded portions threaded into the supporting means, and head portions on which the carriage support rests.
  • the head portions have threaded recesses into which stop screws are threaded for holding with their heads the carriage support in a position abutting the head portions of the adjusting screws. The angular position of the carriage support with the carriage and platen is adjusted by the adjusting screws, whereupon the carriage support is locked by the stop screws in the adjusted position.
  • the position of the axis about which the carriage support with the carriage and platen turns, is selected so that the impact area of the platen moves along the path of the types of actuated type bars.
  • FIG. 1 is partially an end view, and partially a vertical sectional view, illustrating a carriage assembly according to one embodiment of the invention.
  • FIG. 2 is a plan view of the carriage assembly of FIG. 1.
  • a paper carriage 1 supports a cylindrical platen 2 in the usual manner, and parts of the paper carriage l and platen 2 which are of conventional nature, are not illustrated for the sake of clarity and simplicity.
  • Carriage 1 has a lower guide part In having rollers 4c, 4e guided in channels 4b,4d of a pair of rails 4, 4a which are secured to a carriage support.
  • Carriage support 3 is provided with a pair of arms 5, 50 formed with threaded bores 6c into which pivot screws 6, 6a are threaded so that the pivot or journal portions 6d of pivot screws 6, 6a are located in bearing bores 7g, 7h in side walls 70, 7b of the supporting means 7 of the typewriter frame.
  • the carriage support 3 has two holes 8, 8a disposed at the ends of the carriage support 3 which has thinner plate portions in these regions.
  • Each hole 8, has a portion of small diameter, and a portion of larger diameter.
  • the lateral walls 70, 7b of the supporting means 7 have bent plate portions 7c, 7d, each of which is provided with a threaded bore 7 f into which the threaded portion 1 la of an adjusting screw 1 l is threaded.
  • a counter nut 10a on the threaded portion 11a secures each adjusting screw 11 against turning movement relative to the plate portion 70, 7d so that loosening of the adjusting screws is prevented.
  • Each adjusting screw 11 has a hexagonal head lie on which the bottom surface portions 3a of carriagesupport 3 rest.
  • Each hexagonal head 11c is formed with a threaded recess 11d into which the threaded stem 9b of a stop screw 9 is threaded whose head 9a abuts an annular shoulder 8c of the stepped hole 8, 8a.
  • the axis of the angular movement of carriage support 3 is selected in relation to the position of platen 2 and impact area 20 so that platen 2 performs a limited angular movement for adjusting the rebound of the type bars 12 upon impact of the types 12a on the impact and printing area 2a of platen 2.
  • the impact area 20 of the platen 2 moves along a circular path having its center in the axis of the pivot pins 6, 6a toward or away from types 12a approaching the impact area 2a.
  • the lower case type face 12b is shown in the operative position opposite the impact area 20.
  • Type face 12b moves along a circular path about shaft 13a; the end portion of this path being transverse to the impact area 20.
  • the first axis defined by shaft 13a, the second axis defined by pivots 6, 6a and the impact area 20, are substantially aligned as shown in FIG. 1.
  • Type bars 12 are mounted for angular movement on a shaft 13a in a segment-shaped carrier 13 and connected by wire links 14 to other parts of the type actions. Types 12a move on circular paths having end portions substantially perpendicular to impact area 2a.
  • the stop screw 9 is first removed.
  • the hexagonal head portion 1 1c of adjusting screw 11 By turning the hexagonal head portion 1 1c of adjusting screw 11, the threaded portion 11a is screwed downward or upward in the threaded hole 7f of the supporting means 7, and since the carriage support 3 rests on the top face of the hexagonal head 11c, the carriage support 3 is placed in a corresponding position.
  • the previously loosened counter nuts 10a are then tightened so that the angular adjusted position of carriage support 3 is assured, and loosening of adjusting screw 11 is prevented.
  • the adjusting screw 11, and the stop screw 9 at the other end of the carriage support 3 are adjusted in the same manner and to the same height so that carriage support 3 is held in the adjusted angular position in which the impact area 2a of the platen 2 is located in the proper position in relation to the path of movement of the types 12a.
  • the impact area 2a moves about the axis of pivot means 6, 6a along a circular path which substantially coincides with the end portion of the path of types 12a about shaft 13a.
  • a typewriter in combination, a rebound-reducing paper carriage assembly, comprising a paper carriage including a platen extending in one direction and having an impact area; at least one type bar having a type including at least one character type face; shaft means mounting said type bar for angular movement about a first axis radially spaced from said impact area so that said character type face moves toward said impact area along a first circular path having a path end portion transverse to said impact area; a carriage support having guide means supporting said paper carriage and platen for movement in said one direction; supporting means; means mounting said carriage support on said supporting means for angular movement with said paper carriage and said platen and impact area about a second axis substantially aligned with said first axis and said impact area, and parallel to said one direction, said second axis being radially spaced from said impact area so that said impact area is movable along a second circular path merging into said path end portion of said first circular path; and an adjusting device connected to said supporting means and to said carriage support for continuously
  • said adjusting device includes threaded means for adjustably supporting said carriage support on said supporting means, and locking means for said adjusting device locking said carriage support in said selected angular position.
  • an adjustable paper carriage assembly including a paper carriage and a platen extending in one direction and having an impact area located in the path of said types; a carriage support having guide means supporting said paper carriage for movement in said one direction, and being formed with a hole therethrough; supporting means having at least one threaded bore; means mounting said carriage support on said supporting means for angular movement with said paper carriage and said platen about an axis parallel to said one direction; and an adjusting device connected to said supporting means and to said carriage support for angularly displacing said carriage support with said paper carriage and with said platen about said axis and for holding said paper carriage with said platen in a selected angular position whereby said inpact area is placed in a selected adjusted position in said path of movement of said types, said adjusting device including at least one adjusting screw having a threaded portion threaded into said threaded bore of said supporting means, and a head portion having a top face on which said
  • an adjustable paper carriage assembly comprising a paper carriage including a platen extending in one direction and having an impact area located in said path of said types; a carriage support having guide means supporting said paper carriage for movement in said one direction; supporting means formed with two threaded bores spaced in said one direction, said carriage support being located above said supporting means and being formed with two holes passing through and being aligned, respectively with said two threaded bores; means mounting said carriage support on said supporting means for angular movement with said paper carriage and said platen about an axis parallel to said one direction; and an adjusting device connected to said supporting means and to said carriage support for angularly displacing said carriage support with said paper carriage and with said platen about said axis and for holding said paper carriage with said platen in a selected angular position whereby said impact area is placed in a selected adjusted position in said path of movement of said types, said adjusting device including two adjusting screws having head portions, and threade

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US855133A 1968-09-05 1969-09-04 Adjustable paper carriage assembly Expired - Lifetime US3666071A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1786245 1968-09-05

Publications (1)

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US3666071A true US3666071A (en) 1972-05-30

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US855133A Expired - Lifetime US3666071A (en) 1968-09-05 1969-09-04 Adjustable paper carriage assembly

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US (1) US3666071A (enrdf_load_html_response)
FR (1) FR2017989A1 (enrdf_load_html_response)
GB (1) GB1257559A (enrdf_load_html_response)
NL (1) NL6912334A (enrdf_load_html_response)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3905462A (en) * 1973-02-27 1975-09-16 Olympia Werke Ag Multielectrode electrographic printing device
US4466753A (en) * 1982-09-24 1984-08-21 Willcox Frederick P Carriage guiding system and frame for a printer
US4514101A (en) * 1983-12-14 1985-04-30 Xerox Corporation Paper thickness adjusting mechanism for impact printer
EP0143467A3 (en) * 1983-11-29 1985-07-10 Nec Home Electronics Ltd. Adjusting device for dimensionally adjusting a gap between a platen and a print head assembly and printer using the adjusting device
US4643597A (en) * 1983-12-28 1987-02-17 Tokyo Electric Co., Ltd. Dot printer
US4657415A (en) * 1984-06-12 1987-04-14 Oki Electric Industry Co., Ltd. Mechanism for adjusting the spacing between the print head and platen of a printer
US4685816A (en) * 1985-12-06 1987-08-11 Ncr Corporation Impact printer with means for adjusting the associated print hammer
US4738552A (en) * 1985-03-11 1988-04-19 Oki Electric Industry Co., Ltd. Platen gap adjusting mechanism of printer

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US349349A (en) * 1886-09-21 William k
US505059A (en) * 1893-09-12 merritt
US550473A (en) * 1895-11-26 Key-locking device for type-writing machines
US626354A (en) * 1899-06-06 Type-writing machine
US1382349A (en) * 1920-03-10 1921-06-21 Bar Lock Typewriter Company Lt Typewriter with detachable platen-carriage
US1383578A (en) * 1920-02-14 1921-07-05 Fed Adding Machine Corp Interchangeable carriage
US1405412A (en) * 1919-03-05 1922-02-07 Underwood Typewriter Co Typewriting machine
US1504348A (en) * 1920-05-14 1924-08-12 Woodstock Typewriter Co Escapement mechanism for typewriters
US1627390A (en) * 1924-09-12 1927-05-03 Woodstock Typewriter Co Removable carriage for typewriters
US2178682A (en) * 1937-02-08 1939-11-07 Underwood Elliott Fisher Co Typewriting machine

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US349349A (en) * 1886-09-21 William k
US505059A (en) * 1893-09-12 merritt
US550473A (en) * 1895-11-26 Key-locking device for type-writing machines
US626354A (en) * 1899-06-06 Type-writing machine
US1405412A (en) * 1919-03-05 1922-02-07 Underwood Typewriter Co Typewriting machine
US1383578A (en) * 1920-02-14 1921-07-05 Fed Adding Machine Corp Interchangeable carriage
US1382349A (en) * 1920-03-10 1921-06-21 Bar Lock Typewriter Company Lt Typewriter with detachable platen-carriage
US1504348A (en) * 1920-05-14 1924-08-12 Woodstock Typewriter Co Escapement mechanism for typewriters
US1627390A (en) * 1924-09-12 1927-05-03 Woodstock Typewriter Co Removable carriage for typewriters
US2178682A (en) * 1937-02-08 1939-11-07 Underwood Elliott Fisher Co Typewriting machine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3905462A (en) * 1973-02-27 1975-09-16 Olympia Werke Ag Multielectrode electrographic printing device
US4466753A (en) * 1982-09-24 1984-08-21 Willcox Frederick P Carriage guiding system and frame for a printer
EP0143467A3 (en) * 1983-11-29 1985-07-10 Nec Home Electronics Ltd. Adjusting device for dimensionally adjusting a gap between a platen and a print head assembly and printer using the adjusting device
US4514101A (en) * 1983-12-14 1985-04-30 Xerox Corporation Paper thickness adjusting mechanism for impact printer
US4643597A (en) * 1983-12-28 1987-02-17 Tokyo Electric Co., Ltd. Dot printer
US4657415A (en) * 1984-06-12 1987-04-14 Oki Electric Industry Co., Ltd. Mechanism for adjusting the spacing between the print head and platen of a printer
US4738552A (en) * 1985-03-11 1988-04-19 Oki Electric Industry Co., Ltd. Platen gap adjusting mechanism of printer
US4685816A (en) * 1985-12-06 1987-08-11 Ncr Corporation Impact printer with means for adjusting the associated print hammer

Also Published As

Publication number Publication date
GB1257559A (enrdf_load_html_response) 1971-12-22
FR2017989A1 (enrdf_load_html_response) 1970-05-29
NL6912334A (enrdf_load_html_response) 1970-03-09

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