GB878767A - Improvements in or relating to ink ribbon mechanisms - Google Patents

Improvements in or relating to ink ribbon mechanisms

Info

Publication number
GB878767A
GB878767A GB376057A GB376057A GB878767A GB 878767 A GB878767 A GB 878767A GB 376057 A GB376057 A GB 376057A GB 376057 A GB376057 A GB 376057A GB 878767 A GB878767 A GB 878767A
Authority
GB
United Kingdom
Prior art keywords
hand
ribbon
pawls
rod
ink
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
Application number
GB376057A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB376057A priority Critical patent/GB878767A/en
Publication of GB878767A publication Critical patent/GB878767A/en
Expired legal-status Critical Current

Links

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
    • B41J33/00—Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material
    • B41J33/14—Ribbon-feed devices or mechanisms
    • B41J33/40—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction
    • B41J33/44—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction automatically
    • B41J33/51—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction automatically and characterised by the use of particular reversing control means
    • B41J33/512—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction automatically and characterised by the use of particular reversing control means using a pivoted reversing-feeler engaging the external periphery of the wound ribbon
    • 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
    • B41J33/00—Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material
    • B41J33/14—Ribbon-feed devices or mechanisms
    • B41J33/40—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction
    • B41J33/44—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction automatically
    • B41J33/46—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction automatically and characterised by its application to mechanism in which two spools are driven by pawl-and-rachet mechanism
    • B41J33/48—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction automatically and characterised by its application to mechanism in which two spools are driven by pawl-and-rachet mechanism comprising two pawls and ratchets, one for each spool

Landscapes

  • Impression-Transfer Materials And Handling Thereof (AREA)

Abstract

878,767. Ink-ribbon mechanisms. GROSS, H., and GROSS, S. Jan. 31, 1958 [Feb. 4, 1957], No. 3760/57.. Class 100(4) An ink-ribbon reversing mechanism comprises a pair of levers 33 bearing on the ribbon and when the change in diameter is such that e.g. the spool 11 is nearly full, the end 31a of the left-hand lever 33 engages the tail 38 of a latch 34 releasing a pin 28 mounted on a sliding rod 25 coupled to the right-hand spool mechanism. The rod 25 is normally in relaxed position between the tension of two opposed springs 30, Fig. 4, positioned between the arms 31 of the levers 33 and the pins 28, but as the left-hand lever 33 is moved counterclockwise, the left-hand spring 30 becomes increasingly compressed so that when the latch 34 is engaged, the rod 25 moves positively to the right. In so doing the pins 28 disconnect left-hand feeding and detent pawls 19, 40 and permit the right-hand pawls to engage their ratchet wheels 18. The pawls are rocked for ribbon feeding action by a machine connection at 21b, segments 21, and interconnecting link 22.
GB376057A 1957-02-04 1957-02-04 Improvements in or relating to ink ribbon mechanisms Expired GB878767A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB376057A GB878767A (en) 1957-02-04 1957-02-04 Improvements in or relating to ink ribbon mechanisms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB376057A GB878767A (en) 1957-02-04 1957-02-04 Improvements in or relating to ink ribbon mechanisms

Publications (1)

Publication Number Publication Date
GB878767A true GB878767A (en) 1961-10-04

Family

ID=9764444

Family Applications (1)

Application Number Title Priority Date Filing Date
GB376057A Expired GB878767A (en) 1957-02-04 1957-02-04 Improvements in or relating to ink ribbon mechanisms

Country Status (1)

Country Link
GB (1) GB878767A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4019618A (en) * 1976-04-08 1977-04-26 Addmaster Corporation Reversible ribbon drive mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4019618A (en) * 1976-04-08 1977-04-26 Addmaster Corporation Reversible ribbon drive mechanism

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