GB756268A - Automatic ribbon rewind cut-off mechanism for typewriters and like machines - Google Patents
Automatic ribbon rewind cut-off mechanism for typewriters and like machinesInfo
- Publication number
- GB756268A GB756268A GB21886/54A GB2188654A GB756268A GB 756268 A GB756268 A GB 756268A GB 21886/54 A GB21886/54 A GB 21886/54A GB 2188654 A GB2188654 A GB 2188654A GB 756268 A GB756268 A GB 756268A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lever
- spool
- cam
- winding
- link
- 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
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
- B41J31/00—Ink ribbons; Renovating or testing ink ribbons
- B41J31/10—Ink ribbons having arrangements to facilitate threading through a machine
Landscapes
- Impression-Transfer Materials And Handling Thereof (AREA)
Abstract
756,268. Typewriters. INTERNATIONAL BUSINESS MACHINES CORPORATION. June 27, 1954 [July 30, 1953], No. 21886/54. Class 100 (4). Ink-ribbon mechanism.-A ribbon-winding mechanism for power-operated typewriters or the like having a power-roller 6, comprises two ribbon spools 83, driven alternately by pawls 91, by mechanism actuated from a portion 52 of the power-roller 6, and latching means whereby one spool may be continuously driven until winding is complete, whereupon the latching means is released. The spools one only of which is shown, may be fed in letter-space steps during typing by the operation of a power typeaction which rocks a bail causing a pull on a link 54 to pivot a lever 48 which allows a halfrevolution of a cam 41. This oscillates a frame 38 and through a link 78, lever 77, and link 79, pivots a lever 87, and an attached pawl 91 rotates its spool 83. When one spool is full the ribbon 130 is tensioned and a lever 101 associated with the empty spool, pivots counterclockwise, pulls a link 99, and an interposer 98 is rotated so it lies in the path of a lug 107 on the lever 87. Consequently the next oscillation of the lever 87 causes a G-shaped plate 97, carrying the interposer 98, to shift upwardly so the pawl 91 is in effective position, and the pawl 91 associated with the full spool is disengaged. A manual control 112 may be used to determine which spool effects winding. To effect a winding, a continuous actuation of the frame 38 is necessary, and this is effected by depression of a plunger 58 sliding on pins 62, 63 in slots 59, 61. Slot 61 is recessed at 69 to latch the plunger in downward position where its end 71 engages a pin 72 on the lever 48 which pivots both end lugs 49, 56 clear of the pins 51 to permit cam 41 to rotate continuously. When winding is completed the tensioning action on the lever 101 and the lifting of the G-plate 97 causes a pin 113 thereon, to rock a cam lever 123 having a cam stud 125 which acts on a cam surface 127 to unlatch the plunger 58 and restore the lever 48 to original position where it blocks rotation of the cam 41.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US756268XA | 1953-07-30 | 1953-07-30 | |
| US371331A US2757776A (en) | 1953-07-30 | 1953-07-30 | Automatic ribbon rewind cut-off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB756268A true GB756268A (en) | 1956-09-05 |
Family
ID=26757077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21886/54A Expired GB756268A (en) | 1953-07-30 | 1954-07-27 | Automatic ribbon rewind cut-off mechanism for typewriters and like machines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB756268A (en) |
-
1954
- 1954-07-27 GB GB21886/54A patent/GB756268A/en not_active Expired
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