GB444274A - Improvements in or relating to instruments for indicating atmospheric conditions - Google Patents

Improvements in or relating to instruments for indicating atmospheric conditions

Info

Publication number
GB444274A
GB444274A GB3436534A GB3436534A GB444274A GB 444274 A GB444274 A GB 444274A GB 3436534 A GB3436534 A GB 3436534A GB 3436534 A GB3436534 A GB 3436534A GB 444274 A GB444274 A GB 444274A
Authority
GB
United Kingdom
Prior art keywords
pointer
hygrometric
humidity
drum
conditions
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
GB3436534A
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.)
ALWYN STEPHENSON JOHNSTONE WAL
Original Assignee
ALWYN STEPHENSON JOHNSTONE WAL
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 ALWYN STEPHENSON JOHNSTONE WAL filed Critical ALWYN STEPHENSON JOHNSTONE WAL
Priority to GB3436534A priority Critical patent/GB444274A/en
Publication of GB444274A publication Critical patent/GB444274A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods
    • G01N19/10—Measuring moisture content, e.g. by measuring change in length of hygroscopic filament; Hygrometers

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

444,274. Hygrometric apparatus. WALLACE, A. S. J., 10, Rectory Drive, Gosforth, Northumberland. Nov. 29, 1934, No. 34365. [Class 97 (iii)] An indication of climatic or other ambient conditions determined by temperature and relative humidity is given in dependence upon the response of a thermometer and a hygrometric element of the type which changes its length with changes of humidity. In the form shown, the pointer 6 is moved over a temperature scale 7 by a bimetallic strip (not shown). A second pointer 9 is moved over a humidity scale 13 by a thread which is wound round the pointer spindle 8 and secured at one end to a tension spring and at the other to a hygrometric strip, e.g. of hair, paper, seaweed, catgut, artificial silk, or the material known under the Registered Trade Mark " Viscacelle." The area 14 in which the intersection of the pointers 6, 9 can occur is divided into sub-areas corresponding to the various climatic conditions. In a modification one pointer may be replaced by a drum and the other by a needle arranged to move across the drum. The instrument may be used to indicate the conditions in a coal mine or the state of the soil.
GB3436534A 1934-11-29 1934-11-29 Improvements in or relating to instruments for indicating atmospheric conditions Expired GB444274A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3436534A GB444274A (en) 1934-11-29 1934-11-29 Improvements in or relating to instruments for indicating atmospheric conditions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3436534A GB444274A (en) 1934-11-29 1934-11-29 Improvements in or relating to instruments for indicating atmospheric conditions

Publications (1)

Publication Number Publication Date
GB444274A true GB444274A (en) 1936-03-18

Family

ID=10364719

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3436534A Expired GB444274A (en) 1934-11-29 1934-11-29 Improvements in or relating to instruments for indicating atmospheric conditions

Country Status (1)

Country Link
GB (1) GB444274A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2584988A (en) * 1947-03-20 1952-02-12 Bendix Aviat Corp Dew point measuring apparatus
US3053090A (en) * 1959-08-31 1962-09-11 Rambeau Ross Apparatus for indicating comfortable and uncomfortable ranges in temperature and humidity
US3214975A (en) * 1963-06-05 1965-11-02 Edward G Solecki Temperature humidity index measuring instrument
DE1423922B1 (en) * 1960-09-27 1969-09-04 Oliver Dyer Colvin Device for indicating and preventing the risk of condensation or ice formation in a venturi

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2584988A (en) * 1947-03-20 1952-02-12 Bendix Aviat Corp Dew point measuring apparatus
US3053090A (en) * 1959-08-31 1962-09-11 Rambeau Ross Apparatus for indicating comfortable and uncomfortable ranges in temperature and humidity
DE1423922B1 (en) * 1960-09-27 1969-09-04 Oliver Dyer Colvin Device for indicating and preventing the risk of condensation or ice formation in a venturi
US3214975A (en) * 1963-06-05 1965-11-02 Edward G Solecki Temperature humidity index measuring instrument

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