US2184973A - Stylus for facsimile recorders - Google Patents

Stylus for facsimile recorders Download PDF

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Publication number
US2184973A
US2184973A US183759A US18375938A US2184973A US 2184973 A US2184973 A US 2184973A US 183759 A US183759 A US 183759A US 18375938 A US18375938 A US 18375938A US 2184973 A US2184973 A US 2184973A
Authority
US
United States
Prior art keywords
stylus
arm
paper
recording
point
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 - Lifetime
Application number
US183759A
Other languages
English (en)
Inventor
William G H Finch
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 US183759A priority Critical patent/US2184973A/en
Priority to FR848165D priority patent/FR848165A/fr
Priority to NL91327A priority patent/NL55153C/xx
Priority to CH211967D priority patent/CH211967A/de
Priority to GB518/39A priority patent/GB523433A/en
Priority to BE432037D priority patent/BE432037A/xx
Application granted granted Critical
Publication of US2184973A publication Critical patent/US2184973A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H04N1/0607—Scanning a concave surface, e.g. with internal drum type scanners
    • H04N1/0621—Scanning a concave surface, e.g. with internal drum type scanners using a picture-bearing surface stationary in the main-scanning direction
    • 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
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/032—Details of scanning heads ; Means for illuminating the original for picture information reproduction
    • 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
    • H04N1/0607—Scanning a concave surface, e.g. with internal drum type scanners
    • 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
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/303416—Templet, tracer, or cutter
    • Y10T409/303472—Tracer

Definitions

  • My invention relates to novel apparatus for the reception of visual images, by wire or radio, and more particularly relates to improvements for the stylus used for recording upon sensitized paper.
  • the stylus carries a marking point, which is moved towards and from the paper or otherwise electrically controlled in response tothe received signals, to imprint a facsimile of the original image onsaid paper;
  • I mount the stylus point which coacts with the recording sheet upon the oscillating stylus arm andprovide means whereby the stylus may move with respect to the rigidly motivated record arm to permit the stylus point to avoid obstructions in its path of coaction with the sheet to prevent rupture of the record sheet and also to maintain synchronous reproduction of the facsimile image.
  • the stylus point remains stationary for an instant until the scanner arm moves forward sufficiently to effectively foreshorten the radial distance of the point novel stylus mounted upon a rigidly motivated recording arm to prevent distortion or loss in synchronism in facsimile recording.
  • Still another object of my invention is to provide a marking stylus which will automatically I prevent tearing of the paper, should the stylus for any reason catch in the surface of said paper.
  • a further object of my invention is the provision ofv a marking stylus which will automatically return to the correct recording position relative 10 to the oscillating arm, after having passed over an irregularity in the surface of the paper.
  • Figure 1 is a. plan view of the stylus assembly.
  • Figure 2 is an enlarged partial plan view of the stylus, mechanism, in an impeded position.
  • Figure 3 is partial perspective view of the stylus assembly.
  • Figure 4 is a detail of a modified form of stylus point.
  • cam l is mounted on shaft 2 which is rotatable by means of the worm gear 3 engaging with worm 4, which is in turn 25 rotatable by means of a synchronous motor (not shown).
  • arm 5 Positioned adjacent cam l is arm 5 suitably pivoted at '6 so that rotation of cam I will cause the point of the recording stylus I to describe an 30 are, thus scanning the sensitized recording paper 8 as shown.
  • the sensitized recording paper 8 is continuously supplied from a roll (not shown) and moves past the recording point I in regular steps through paper guides 9-9 by means of 35 l2 and having at the marking extremity the 5 point, or stylus I, which is caused to make contact with or otherwise mark paper 8 in response.
  • arm II is free to turn relative to arm I when such an obstruction is encountered. Due to the eflective foreshortening of the stylus when it tilts, the point I will ride over the obstruction ll without inJuring the paper.
  • connection 20 which is made to the signalcurrents' for recording purposes.
  • Any convenient marking medium such as a high-tension spark or electrolytic decomposition, or means for melting a wax coating on paper with a heated stylus or equivalent systeams may be used in connection with my invensignal may also be utilized in practising my invention, by reciprocating arm ll of Figure 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimiles In General (AREA)
US183759A 1938-01-07 1938-01-07 Stylus for facsimile recorders Expired - Lifetime US2184973A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US183759A US2184973A (en) 1938-01-07 1938-01-07 Stylus for facsimile recorders
FR848165D FR848165A (fr) 1938-01-07 1938-12-29 Appareil pour la réception d'images
NL91327A NL55153C (en)) 1938-01-07 1938-12-31
CH211967D CH211967A (de) 1938-01-07 1939-01-04 Schreibhebel an Registrierapparat.
GB518/39A GB523433A (en) 1938-01-07 1939-01-06 Stylus for facsimile recorder
BE432037D BE432037A (en)) 1938-01-07 1939-01-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US183759A US2184973A (en) 1938-01-07 1938-01-07 Stylus for facsimile recorders

Publications (1)

Publication Number Publication Date
US2184973A true US2184973A (en) 1939-12-26

Family

ID=22674168

Family Applications (1)

Application Number Title Priority Date Filing Date
US183759A Expired - Lifetime US2184973A (en) 1938-01-07 1938-01-07 Stylus for facsimile recorders

Country Status (6)

Country Link
US (1) US2184973A (en))
BE (1) BE432037A (en))
CH (1) CH211967A (en))
FR (1) FR848165A (en))
GB (1) GB523433A (en))
NL (1) NL55153C (en))

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2606093A (en) * 1946-03-04 1952-08-05 Taylor Taylor & Hobson Ltd Recording apparatus
US2607654A (en) * 1949-01-15 1952-08-19 Western Union Telegraph Co Stylus assembly for facsimile recorders
US2676869A (en) * 1949-12-15 1954-04-27 Cons Electric Company Stylus mechanism
US2715055A (en) * 1949-10-06 1955-08-09 Raytheon Mfg Co Depth sounder recorder marking means
US3662394A (en) * 1970-04-13 1972-05-09 Hans A Dudler Recording sphygmomanometer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2606093A (en) * 1946-03-04 1952-08-05 Taylor Taylor & Hobson Ltd Recording apparatus
US2607654A (en) * 1949-01-15 1952-08-19 Western Union Telegraph Co Stylus assembly for facsimile recorders
US2715055A (en) * 1949-10-06 1955-08-09 Raytheon Mfg Co Depth sounder recorder marking means
US2676869A (en) * 1949-12-15 1954-04-27 Cons Electric Company Stylus mechanism
US3662394A (en) * 1970-04-13 1972-05-09 Hans A Dudler Recording sphygmomanometer

Also Published As

Publication number Publication date
FR848165A (fr) 1939-10-24
GB523433A (en) 1940-07-15
NL55153C (en)) 1943-09-15
BE432037A (en)) 1939-02-28
CH211967A (de) 1940-10-31

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