GB818903A - Improvements in or relating to facsimile apparatus - Google Patents

Improvements in or relating to facsimile apparatus

Info

Publication number
GB818903A
GB818903A GB1283/57A GB128357A GB818903A GB 818903 A GB818903 A GB 818903A GB 1283/57 A GB1283/57 A GB 1283/57A GB 128357 A GB128357 A GB 128357A GB 818903 A GB818903 A GB 818903A
Authority
GB
United Kingdom
Prior art keywords
spring
drum
linkage
shaft
jan
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
GB1283/57A
Inventor
Frederick Percival Mason
Leonard Oswald Marden
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.)
Creed and Co Ltd
Original Assignee
Creed and Co Ltd
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 Creed and Co Ltd filed Critical Creed and Co Ltd
Publication of GB818903A publication Critical patent/GB818903A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
    • H04L13/02—Details not particular to receiver or transmitter
    • H04L13/04—Driving mechanisms; Clutches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D11/00—Clutches in which the members have interengaging parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
    • F16D3/60—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising pushing or pulling links attached to both parts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/06—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using cylindrical picture-bearing surfaces, i.e. scanning a main-scanning line substantially perpendicular to the axis and lying in a curved cylindrical surface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1502—Escapement

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Mechanical Operated Clutches (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Braking Arrangements (AREA)
  • Facsimiles In General (AREA)

Abstract

818,903. Shaft couplings. CREED & CO. Ltd. Jan. 10, 1958 [Jan. 14, 1957], No. 1283/57. Class 80 (2). [Also in Group XL (b)] In facsimile apparatus the message-supporting drum 20 is coupled to the drive-shaft 4 via a linkage 5, 12 incorporating a spring 10 so that, when the synchronous drive motor 1 is connected to shaft 4 by operation of a clutch 3, the torque load applied to the motor is limited by extension of spring 10. Subsequent contraction of spring 10, after the drum has reached synchronous speed, to realign linkage 5, 12, results in an acceleration of the drum above synchronous speed with consequent overshoot against a resilient stop 6 and a period of oscillation before the drum settles down at the correct speed and phase position. In accordance with the invention this effect is prevented by the provision of an escapement mechanism 13, 14, 17 which is set into oscillation during the contraction of spring 10 to provide a braking force. The force which is proportional to the relative velocity of the two parts of the linkage is effective to reduce the velocity to zero at the instant of alignment so that no overshoot occurs. According to a modification (not disclosed in detail) spring 10 may be allowed to accelerate drum 20 through the aligned position and the braking means arranged to become effective in response to resilient stop 10 when it acts to restore alignment.
GB1283/57A 1957-01-14 1957-01-14 Improvements in or relating to facsimile apparatus Expired GB818903A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB359157X 1957-01-14

Publications (1)

Publication Number Publication Date
GB818903A true GB818903A (en) 1959-08-26

Family

ID=10382968

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1283/57A Expired GB818903A (en) 1957-01-14 1957-01-14 Improvements in or relating to facsimile apparatus

Country Status (6)

Country Link
US (1) US2966389A (en)
BE (1) BE563941A (en)
CH (1) CH359157A (en)
DE (1) DE1110210B (en)
FR (1) FR1189064A (en)
GB (1) GB818903A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3505472A (en) * 1966-01-12 1970-04-07 Magnavox Co Facsimile synchronizing system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2683514A (en) * 1950-11-20 1954-07-13 Flight Res Inc Synchronous control device

Also Published As

Publication number Publication date
BE563941A (en)
FR1189064A (en) 1959-09-29
US2966389A (en) 1960-12-27
DE1110210B (en) 1961-07-06
CH359157A (en) 1961-12-31

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