GB699835A - Improvements in hydrostatic levels - Google Patents

Improvements in hydrostatic levels

Info

Publication number
GB699835A
GB699835A GB995451A GB995451A GB699835A GB 699835 A GB699835 A GB 699835A GB 995451 A GB995451 A GB 995451A GB 995451 A GB995451 A GB 995451A GB 699835 A GB699835 A GB 699835A
Authority
GB
United Kingdom
Prior art keywords
tube
reservoir
transparent
valve
scriber
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
GB995451A
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 GB995451A priority Critical patent/GB699835A/en
Publication of GB699835A publication Critical patent/GB699835A/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
    • G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
    • G01C5/04—Hydrostatic levelling, i.e. by flexibly interconnected liquid containers at separated points

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)
  • Coating Apparatus (AREA)

Abstract

699,835. Levels. SCHMIDT, C. E. April 27, 1951, No. 9954/51. Class 97 (ii). A level comprises a liquid reservoir 10, Fig. 1, a tube 25a having one end communicating with the liquid 14 in the reservoir, a distant level reading sight 35 at the other end of the tube and a normally closed valve which is opened when a scriber 36 is used to scribe and mark. The transparent tube 35 provided with a datum mark 37 at a fixed distance above the scriber 36 is held by a rubber insert 49, Fig. 4, within the boss 48 of a portion 38 of a transparent valve casing. When the scriber 36, which is attached to a diaphragm 46 rigidly fixed at its edge in the portion 38, is pressed inwardly, its rear end opens a spring pressed valve 41 contained within a second portion 39 of the valve casing. A reinforcing tube and clamp 33a connect the end of tube 25a to a boss 33 on the portion 39. The reservoir 10 comprising heads 11, 12 and a transparent drum 13 is rotatably carried on a flanged base 26 by a bushed bearing, the outer surface of which is provided with a standard pipe thread which normally receives a handle but may be used for supporting the base. A bolt 15, which holds the parts 11, 12, 13 together is bored at 22, one end thereof communicating with a passage 23 whose outer end removably receives an L-shaped connector to which one end of the transparent tube 25a is clamped whilst the other end of bore 22 terminates in an opening 24 at the geometric centre of the drum 13. The drum 13 is more than half filled with liquid 14 and has a closable vent valve 18. After use, the reservoir 10 is employed as a reel on which the tube 25a is wound, a knob 19 being provided on the head 12. The end of tube 25a is passed through one of several openings 57 and the valve casing and detached sight 35 laid on head 12 so that a cover 52 secured by lugs 54 engaging posts 51, 58 may be placed thereover, a spring in the cover 52 bearing on the end of bolt 15. A hanger may be provided on the base 26 for supporting the reservoir, when in use, from a nail.
GB995451A 1951-04-27 1951-04-27 Improvements in hydrostatic levels Expired GB699835A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB995451A GB699835A (en) 1951-04-27 1951-04-27 Improvements in hydrostatic levels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB995451A GB699835A (en) 1951-04-27 1951-04-27 Improvements in hydrostatic levels

Publications (1)

Publication Number Publication Date
GB699835A true GB699835A (en) 1953-11-18

Family

ID=9881825

Family Applications (1)

Application Number Title Priority Date Filing Date
GB995451A Expired GB699835A (en) 1951-04-27 1951-04-27 Improvements in hydrostatic levels

Country Status (1)

Country Link
GB (1) GB699835A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2283818A (en) * 1993-11-10 1995-05-17 John Ashworth Level-indicating device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2283818A (en) * 1993-11-10 1995-05-17 John Ashworth Level-indicating device

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