GB372777A - Apparatus for recording the duration of sunshine - Google Patents

Apparatus for recording the duration of sunshine

Info

Publication number
GB372777A
GB372777A GB425531A GB425531A GB372777A GB 372777 A GB372777 A GB 372777A GB 425531 A GB425531 A GB 425531A GB 425531 A GB425531 A GB 425531A GB 372777 A GB372777 A GB 372777A
Authority
GB
United Kingdom
Prior art keywords
bulb
contact
mercury
contacts
condenser
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
GB425531A
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.)
ARTHUR FELIX DUFTON
Original Assignee
ARTHUR FELIX DUFTON
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 ARTHUR FELIX DUFTON filed Critical ARTHUR FELIX DUFTON
Priority to GB425531A priority Critical patent/GB372777A/en
Publication of GB372777A publication Critical patent/GB372777A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01WMETEOROLOGY
    • G01W1/00Meteorology
    • G01W1/12Sunshine duration recorders

Abstract

372,777. Sunshine recorders. DUFTON, A. F.. Greenbank, Garston, Hertfordshire. Feb. 11, 1931, No. 4255. [Class 97(iii).] A sunshine recorder comprises two differentially arranged heat responsive elements of which the external surface of one is black and that of the other white. A slight actuation of the controlling element may cause artificial heat to be supplied to the second element and prevent further movement. In the form shown, a blackened bulb 2 containing ether and adapted to be exposed to sunlight is connected through a bent tube 1 containing mercury to an ether bulb 3 surrounded by a heating coil 4 and painted white. A pair of contacts 5, 6 are fused in the tube 1 below the bulb 2 and connected respectively to one side of an .alternating current source 7 through resistance 8 and to the other side through condenser 9, the contact 5 being placed at a short distance above the contact 6. Normally contacts 5, 6 are immersed in the mercury and current flows through resistance 8, contacts 5, 6 and condenser 9. On heat being supplied to bulb 2, the mercury level falls below contact 5 and the current passes through condenser 9, contact 6, mercury column, contact 12 and solenoid 11, the latter operating an armature and starting the clock 10. Immediately thereafter the mercury uncovers the contact 6, the current then passing through the heating coil 4 so that the bulb 3 is brought to a temperature approximately equal to that of the bulb 3, the mercury surface at the contact 6 oscillating slightly to maintain the balance. When the bulb 2 ceases to be heated the mercury surface has to move only the short distance between the contacts 5, 6 to short-circuit the solenoid 11 and stop the clock. The intensity of the incident radiation may be indicated by a meter adapted to measure and record the amount of heat supplied to the coils 4. In a modification operated by direct current the condenser 9 is dispensed with and the contacts 5, 6 are placed below the bulb 3. In a further modification two differentially arranged metallic strips coloured black and white respectively may be used.
GB425531A 1931-02-11 1931-02-11 Apparatus for recording the duration of sunshine Expired GB372777A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB425531A GB372777A (en) 1931-02-11 1931-02-11 Apparatus for recording the duration of sunshine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB425531A GB372777A (en) 1931-02-11 1931-02-11 Apparatus for recording the duration of sunshine

Publications (1)

Publication Number Publication Date
GB372777A true GB372777A (en) 1932-05-11

Family

ID=9773656

Family Applications (1)

Application Number Title Priority Date Filing Date
GB425531A Expired GB372777A (en) 1931-02-11 1931-02-11 Apparatus for recording the duration of sunshine

Country Status (1)

Country Link
GB (1) GB372777A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2460655A (en) * 1945-11-16 1949-02-01 Jefferson Electric Co Apparatus for determining the permeability of materials
US3022635A (en) * 1958-10-13 1962-02-27 Union Carbide Corp Method and apparatus for controlling periodically reversed heat transfer devices
US5230884A (en) * 1990-09-11 1993-07-27 University Of Wales College Of Cardiff Aerosol formulations including proteins and peptides solubilized in reverse micelles and process for making the aerosol formulations

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2460655A (en) * 1945-11-16 1949-02-01 Jefferson Electric Co Apparatus for determining the permeability of materials
US3022635A (en) * 1958-10-13 1962-02-27 Union Carbide Corp Method and apparatus for controlling periodically reversed heat transfer devices
US5230884A (en) * 1990-09-11 1993-07-27 University Of Wales College Of Cardiff Aerosol formulations including proteins and peptides solubilized in reverse micelles and process for making the aerosol formulations

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