GB129736A - Improvements in Illuminating the Dials or Scales of Clocks or other Instruments. - Google Patents

Improvements in Illuminating the Dials or Scales of Clocks or other Instruments.

Info

Publication number
GB129736A
GB129736A GB1859917A GB1859917A GB129736A GB 129736 A GB129736 A GB 129736A GB 1859917 A GB1859917 A GB 1859917A GB 1859917 A GB1859917 A GB 1859917A GB 129736 A GB129736 A GB 129736A
Authority
GB
United Kingdom
Prior art keywords
clock
illuminating
cooper
bezel
dials
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
GB1859917A
Inventor
Bertram George Cooper
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 GB1859917A priority Critical patent/GB129736A/en
Publication of GB129736A publication Critical patent/GB129736A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/30—Illumination of dials or hands

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)

Abstract

129,736. Cooper, J. D., (Representative of Cooper, B. G.). Dec. 14. 1917. Cases, clock; illuminating, means for.-A clock pressure gauge, speed indicator, or the like 1 is put in an outer case 3 large enough to leave an annular space between them, and light from a lamp 4 at the back is directed to the front and cast upon the graduated margin of the dial 2 by two annular mirrors 5, 6. A unique reading as 12 o'clock is conspicuously indicated by letting a pencil of light pass through a hole 13 in the front mirror and strike a glass bead 14 in the bezel 8 holding the glass front 7 of the outer case. The bezel and front mirror can be turned together to set the hole and bead to any reading.
GB1859917A 1917-12-14 1917-12-14 Improvements in Illuminating the Dials or Scales of Clocks or other Instruments. Expired GB129736A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1859917A GB129736A (en) 1917-12-14 1917-12-14 Improvements in Illuminating the Dials or Scales of Clocks or other Instruments.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1859917A GB129736A (en) 1917-12-14 1917-12-14 Improvements in Illuminating the Dials or Scales of Clocks or other Instruments.

Publications (1)

Publication Number Publication Date
GB129736A true GB129736A (en) 1919-07-24

Family

ID=32348036

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1859917A Expired GB129736A (en) 1917-12-14 1917-12-14 Improvements in Illuminating the Dials or Scales of Clocks or other Instruments.

Country Status (1)

Country Link
GB (1) GB129736A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746160C (en) * 1935-07-01 1944-05-31 Bendix Aviat Corp Device for dial illumination of measuring instruments
US2426713A (en) * 1945-03-31 1947-09-02 Simpson Ray Illuminated instrument
US2515844A (en) * 1946-07-18 1950-07-18 Bausch & Lomb Illuminating device
US2738412A (en) * 1952-11-07 1956-03-13 Nye S Spencer Compass illuminating assembly

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746160C (en) * 1935-07-01 1944-05-31 Bendix Aviat Corp Device for dial illumination of measuring instruments
US2426713A (en) * 1945-03-31 1947-09-02 Simpson Ray Illuminated instrument
US2515844A (en) * 1946-07-18 1950-07-18 Bausch & Lomb Illuminating device
US2738412A (en) * 1952-11-07 1956-03-13 Nye S Spencer Compass illuminating assembly

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