GB833942A - Improvements in or relating to selector mechanism for telegraphic printers - Google Patents

Improvements in or relating to selector mechanism for telegraphic printers

Info

Publication number
GB833942A
GB833942A GB11317/58A GB1131758A GB833942A GB 833942 A GB833942 A GB 833942A GB 11317/58 A GB11317/58 A GB 11317/58A GB 1131758 A GB1131758 A GB 1131758A GB 833942 A GB833942 A GB 833942A
Authority
GB
United Kingdom
Prior art keywords
stop
cam
levers
controlled
latch
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
GB11317/58A
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.)
TELEPRINTER CORP
Original Assignee
TELEPRINTER CORP
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 TELEPRINTER CORP filed Critical TELEPRINTER CORP
Publication of GB833942A publication Critical patent/GB833942A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L17/00—Apparatus or local circuits for transmitting or receiving codes wherein each character is represented by the same number of equal-length code elements, e.g. Baudot code
    • H04L17/16—Apparatus or circuits at the receiving end
    • H04L17/26—Apparatus or circuits at the receiving end using aggregate motion translation

Abstract

833,942. Type-printing telegraphy. TELEPRINTER CORPORATION. April 9, 1958 [April 11, 1957], No. 11317/58. Class 40 (3). Relates to an improved selector mechanism for a printer of the kind described in Specification 799,956 which comprises a type cylinder moved axially and rotated by cables acted on by pulleys which are mounted on levers moved by cams, the cam-shaft being continuously rotated but the cams being turned through individual half-revolution clutches, to provide either an " in " or an " out " position for the corresponding pulley. The clutches are controlled by stop levers which are magnetically controlled. In one embodiment, a pulley 412 is carried by a cam-follower lever 414 operated by a cam 418 for movement between the solidline " in " position and the dotted-line " out " position, 4141. The half rotation of cam 418 is provided by clutch 420 having a stop tooth 422 which engages stops on arms 424, 426. The stop arms are parts of levers pivoted at 428, 434, respectively and urged by springs 432, 438 respectively towards a sequence cam 440 on shaft 166, which prevents release of the stop arms 424, 426, until a desired time indicated by the cam drop 442. A latch 444, whose position is controlled by an electromagnet 446 and a spring 456 releases the stop-arm 424 and holds the stop-arm 426 when the magnet 446 is energized. When the magnet is de-energized the opposite effect is produced. The latch is adjusted to move without touching the cooperating parts of the stop-arm levers, by raising or lowering the lever 490 upon which its pivot 452 is mounted. The latch may be controlled by two opposed electromagnets, Figs. 13 to 15 (not shown), or may be magnetically polarized in one direction or the other, by coils common to all the latches of the selector, to move towards one or the other of two individually provided permanent magnets, Figs. 16 to 20 (not shown). Specifications 813,081 and 833,941 also are referred to.
GB11317/58A 1957-04-11 1958-04-09 Improvements in or relating to selector mechanism for telegraphic printers Expired GB833942A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US833942XA 1957-04-11 1957-04-11

Publications (1)

Publication Number Publication Date
GB833942A true GB833942A (en) 1960-05-04

Family

ID=22178008

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11317/58A Expired GB833942A (en) 1957-04-11 1958-04-09 Improvements in or relating to selector mechanism for telegraphic printers

Country Status (1)

Country Link
GB (1) GB833942A (en)

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