GB336609A - The use of a spirit level bubble for control of apparatus and/or mechanism - Google Patents

The use of a spirit level bubble for control of apparatus and/or mechanism

Info

Publication number
GB336609A
GB336609A GB2157929A GB2157929A GB336609A GB 336609 A GB336609 A GB 336609A GB 2157929 A GB2157929 A GB 2157929A GB 2157929 A GB2157929 A GB 2157929A GB 336609 A GB336609 A GB 336609A
Authority
GB
United Kingdom
Prior art keywords
bubble
light
cells
sensitive
control
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
GB2157929A
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.)
E R Watts & Son Ltd
Original Assignee
E R Watts & Son 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 E R Watts & Son Ltd filed Critical E R Watts & Son Ltd
Priority to GB2157929A priority Critical patent/GB336609A/en
Publication of GB336609A publication Critical patent/GB336609A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G01C9/02—Details
    • G01C9/06—Electric or photoelectric indication or reading means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)

Abstract

336,609. Watts & Son, Ltd., E. R., and Weston, S. July 13, 1929. Levels.-The movement of a spirit-level bubble or the image thereof is caused to affect light-sensitive apparatus. In Fig. 1 light from a source 1 is condensed by a lens 11 and passes through the bubble 3 on to a light-sensitive cell 5. In another form the cell is arranged to receive light reflected by the bubble. In Fig. 2 light passes through the bubble 3 and through an optical system 4 so that a bubble image 30 is projected on to a pair of light-sensitive cells 5 6. The cells may be included in an amplifying circuit including a relay operated by differential illumination of the cells, the relay being arranged to control the opening or closing of circuits operating any desired apparatus, such for instance as means for firing a gun when a particular inclination is reached.
GB2157929A 1929-07-13 1929-07-13 The use of a spirit level bubble for control of apparatus and/or mechanism Expired GB336609A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2157929A GB336609A (en) 1929-07-13 1929-07-13 The use of a spirit level bubble for control of apparatus and/or mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2157929A GB336609A (en) 1929-07-13 1929-07-13 The use of a spirit level bubble for control of apparatus and/or mechanism

Publications (1)

Publication Number Publication Date
GB336609A true GB336609A (en) 1930-10-13

Family

ID=10165281

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2157929A Expired GB336609A (en) 1929-07-13 1929-07-13 The use of a spirit level bubble for control of apparatus and/or mechanism

Country Status (1)

Country Link
GB (1) GB336609A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE31248E (en) 1978-06-07 1983-05-24 Paul J. Berger Electro-mechanical transducer
GB2158230A (en) * 1984-03-08 1985-11-06 Robert William Rowland Electronic level
EP0168150A1 (en) * 1984-06-13 1986-01-15 Technical Designs Incorporated Electronic inclination sensing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE31248E (en) 1978-06-07 1983-05-24 Paul J. Berger Electro-mechanical transducer
GB2158230A (en) * 1984-03-08 1985-11-06 Robert William Rowland Electronic level
EP0168150A1 (en) * 1984-06-13 1986-01-15 Technical Designs Incorporated Electronic inclination sensing device

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