GB818884A - Improvements in and relating to printing apparatus - Google Patents

Improvements in and relating to printing apparatus

Info

Publication number
GB818884A
GB818884A GB23197/56A GB2319756A GB818884A GB 818884 A GB818884 A GB 818884A GB 23197/56 A GB23197/56 A GB 23197/56A GB 2319756 A GB2319756 A GB 2319756A GB 818884 A GB818884 A GB 818884A
Authority
GB
United Kingdom
Prior art keywords
shaft
type
rotates
cycle
lever
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
GB23197/56A
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.)
HP Inc
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of GB818884A publication Critical patent/GB818884A/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
    • B41J7/00—Type-selecting or type-actuating mechanisms
    • B41J7/54—Selecting arrangements including combinations, permutation, summation, or aggregation means
    • B41J7/68—Selecting arrangements including combinations, permutation, summation, or aggregation means with means for selectively closing an electric circuit for type presentation

Landscapes

  • Accessory Devices And Overall Control Thereof (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)

Abstract

818,884. Selective printing. HEWLETT-PACKARD CO. July 26, 1956 [March 9, 1956], No. 23197/56. Class 100(4) Type-wheel machines; electromechanical type-actions; aligning for impression. A printing machine, described for use with electronic counters, comprises an electromagnetically controlled clutch 17, 18 Fig. 4, connecting a drive 14 with a number of type wheels 86, and electromagnetic locking means 91-94, Fig. 2, which selectively lock the associated typewheel 86 against rotation for a printing operation. The characters are locked in selected position by the sensing of a particular potential by a brush and commutator arrangement as described in Specification 818,883, and this potential, together with a source potential, representing a character to be printed, are compared in a coincidence device and after operating the clutch magnet 57 to initiate a printing cycle, the coincidence device releases the armature 89 of the electromagnet 92 so that members 94 engage in a detent 87 formed between characters. Operation of the clutch magnet 57, pivots the armature 53 and causes engagement of clutch 17, 18, rotates shaft 16 and through gearing, rotates a typewheel shaft 73. Friction clutches are included in each type-wheel 86 (see Specification 818,883) so that a cycle of operation is completed upon each operation of magnet 57, although various wheels have by now been locked in predetermined selected positions. Line-spacing mechanism. Rotation of the shaft 16, (Fig. 3, not shown), rotates a cam, oscillates a follower lever, and reciprocates a pawl to advance a ratchet wheel on a feed-roller shaft 151. Hammer-impression arrangements. A cam 257 on shaft 16 operates, via follower 252 and lever 251, a spring impacting platen 122. The type-wheel shaft 73 rotates twice to one rotation of the shaft 16 so that type-setting occurs in the first half of a print cycle and impression in the second half-cycle. Ink-ribbon mechanism. Automatic ink-ribbon reversing occurs when the tension in the ribbon bears on a stud 194, Fig. 5, and pivots a lever 202. This pushes a two-position bell-crank lever 223 into its other position which engages a collar 243 to longitudinally shift a shaft 212 so that a pinion drive from a gear 209 is changed from one spool to the other.
GB23197/56A 1956-03-09 1956-07-26 Improvements in and relating to printing apparatus Expired GB818884A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US570553A US2864307A (en) 1956-03-09 1956-03-09 Printer

Publications (1)

Publication Number Publication Date
GB818884A true GB818884A (en) 1959-08-26

Family

ID=24280095

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23197/56A Expired GB818884A (en) 1956-03-09 1956-07-26 Improvements in and relating to printing apparatus

Country Status (5)

Country Link
US (1) US2864307A (en)
BE (1) BE550230A (en)
DE (1) DE1070853B (en)
FR (1) FR1163018A (en)
GB (1) GB818884A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3371270A (en) * 1963-09-04 1968-02-27 Commissariat Energie Atomique Devices for the measurement of weak magnetic fields by nuclear induction

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1320104A (en) * 1962-01-22 1963-03-08 Seailles & Tison Automatic type letterpress printing device
US3227258A (en) * 1962-07-31 1966-01-04 Pannier Corp Rotary imprinting machine moving selected character to imprinting position by shortest arc
US3176610A (en) * 1963-10-25 1965-04-06 Anelex Corp Type-setting mechanism for high speed printers
US3732812A (en) * 1971-03-04 1973-05-15 Ncr Differentially positionable type wheels in remotely controlled print modules
US3796156A (en) * 1971-07-12 1974-03-12 J Bracken Line printer with recirculating line store and line print memories

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1675969A (en) * 1925-02-20 1928-07-03 Hilditch Ernst Automatic printing machine
US1909550A (en) * 1931-10-29 1933-05-16 Tabulating Machine Co Printing device
US2066748A (en) * 1935-12-28 1937-01-05 Ibm Printing mechanism for tabulating machines
US2133865A (en) * 1936-01-08 1938-10-18 Boiteaux Eugene M La Mechanical tabulator alphabetical indexing mechanism
US2157035A (en) * 1936-09-05 1939-05-02 Ibm Printing mechanism
US2381862A (en) * 1944-03-10 1945-08-14 Ibm Printing mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3371270A (en) * 1963-09-04 1968-02-27 Commissariat Energie Atomique Devices for the measurement of weak magnetic fields by nuclear induction

Also Published As

Publication number Publication date
US2864307A (en) 1958-12-16
BE550230A (en)
DE1070853B (en) 1959-12-10
FR1163018A (en) 1958-09-22

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