GB359821A - Improvements in and relating to means for graduating record surfaces photographically - Google Patents

Improvements in and relating to means for graduating record surfaces photographically

Info

Publication number
GB359821A
GB359821A GB1789/31A GB178931A GB359821A GB 359821 A GB359821 A GB 359821A GB 1789/31 A GB1789/31 A GB 1789/31A GB 178931 A GB178931 A GB 178931A GB 359821 A GB359821 A GB 359821A
Authority
GB
United Kingdom
Prior art keywords
mirror
graduating
photographically
relating
record surface
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
GB1789/31A
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Publication of GB359821A publication Critical patent/GB359821A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/20—Cathode-ray oscilloscopes
    • G01R13/22—Circuits therefor
    • G01R13/30—Circuits for inserting reference markers, e.g. for timing, for calibrating, for frequency marking

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Variable Magnification In Projection-Type Copying Machines (AREA)

Abstract

359,821. Recording-apparatus. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Jan. 19, 1931, No. 1789. Convention date, April 14, 1930. Addition to 359,810. [Class 106 (iv).] Graduation of record surface.-In a photographic recording device as described in the parent Specification for producing ordinates on the record surface in accordance with time the rotating mirror is replaced by a swinging mirror. As shown the mirror 3 is mounted on the end of a leaf spring 4 set into oscillation by a hand thrust or other means, the reflected image of a source of light 1 being focused by a cylindrical lens 7 on to a recording drum 6 to produce a time ordinate.
GB1789/31A 1930-04-14 1931-01-19 Improvements in and relating to means for graduating record surfaces photographically Expired GB359821A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE359821X 1930-04-14

Publications (1)

Publication Number Publication Date
GB359821A true GB359821A (en) 1931-10-29

Family

ID=6291286

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1789/31A Expired GB359821A (en) 1930-04-14 1931-01-19 Improvements in and relating to means for graduating record surfaces photographically

Country Status (1)

Country Link
GB (1) GB359821A (en)

Similar Documents

Publication Publication Date Title
GB359821A (en) Improvements in and relating to means for graduating record surfaces photographically
GB350323A (en) Improvements in or relating to optical objectives
GB359822A (en) Improvements in and relating to means for graduating record surfaces photographically
GB319809A (en) Improvements in or relating to picture and the like facsimile telegraph transmitters
ES363974A1 (en) Flare control shield for an overhead projector
GB359810A (en) Improvements in and relating to means for graduating record surfaces photographically
GB446835A (en) Improvements in or relating to the reproduction of recorded sounds
GB365559A (en) Improvements in or relating to optical systems for photographic recording of the waveform of electric currents such as those influenced by sound waves
GB350306A (en) Improvements in or relating to photographic sound recording
GB575871A (en) Improved apparatus for teaching optics
GB424042A (en) Improvements in making sound records photographically
GB617046A (en) Improvements in or relating to apparatus for recording sound oscillations
GB434376A (en) Improvements in the photographic recording of sound impulses
GB335680A (en) Improvements relating to recording apparatus for sound-films
GB390509A (en) Improvements in or relating to optical sound records
GB385576A (en) Improvements in or relating to talking films
GB495088A (en) An optical method and apparatus for the recording of oscillations, particularly for manufacturing sound-films
GB400115A (en) Improvements in photophones
GB301082A (en) Improvements in or relating to talking film apparatus
GB485637A (en) Photographic recording of sound
GB546308A (en) Improvements in or relating to photographic sound recorders
GB191022576A (en) Improvements in and relating to Rapid Photographic Records of Curves of Oscillographs, Rheographs and the like.
GB420265A (en) Improvements in systems for the optical recording of sounds on cinematograph films
GB309930A (en) An improved method and means for recording or reproducing sound
GB361555A (en) Illuminating device for use in the reproduction of sounds recorded on films