GB730414A - Improvements in adjustable electric contact thermometers - Google Patents

Improvements in adjustable electric contact thermometers

Info

Publication number
GB730414A
GB730414A GB3164752A GB3164752A GB730414A GB 730414 A GB730414 A GB 730414A GB 3164752 A GB3164752 A GB 3164752A GB 3164752 A GB3164752 A GB 3164752A GB 730414 A GB730414 A GB 730414A
Authority
GB
United Kingdom
Prior art keywords
wire
mercury
contact
tube
rotation
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
GB3164752A
Inventor
John Geoffrey Baumbach
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.)
J C COWLISHAW Ltd
Original Assignee
J C COWLISHAW 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 J C COWLISHAW Ltd filed Critical J C COWLISHAW Ltd
Priority to GB3164752A priority Critical patent/GB730414A/en
Publication of GB730414A publication Critical patent/GB730414A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K5/00—Measuring temperature based on the expansion or contraction of a material
    • G01K5/02—Measuring temperature based on the expansion or contraction of a material the material being a liquid
    • G01K5/16—Measuring temperature based on the expansion or contraction of a material the material being a liquid with electric contacts

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

730,414. Mercury switches. COWLISHAW, Ltd., J. C. Dec. 14, 1953 [Dec. 13, 1952], No. 31647/52. Class 38 (5). A contact - thermometer has a contact wire C arranged to be engaged by the mercury at an adjustable temperature, the wire being attached at its upper end to a triangular or other non- circular member C<SP>1</SP> housed in a similarlyshaped tube B which is connected to the mercury-containing tube A by a bridge tube B<SP>2</SP> through which wire C extends into tube A. Member. C<SP>1</SP> is formed with an external spiral groove engaging the spirals of a wire D which is attached at its upper end to an armature D<SP>1</SP>, and at its lower end to an insulating cylinder d3, surrounding wire C. A contact a<SP>1</SP> connected to the mercury is connected to a terminal d and wire C is connected via a surrounding coil b<SP>2</SP> and wire b to a terminal d<SP>2</SP>. The terminals are housed in an insulating cover d<SP>4</SP> supporting an insulating sleeve D<SP>2</SP> around which is a circular magnet D<SP>5</SP>. Rotation of the magnet causes corresponding rotation of armature D<SP>1</SP> and spiral D, thereby causing rectilinear movement of member C<SP>1</SP> and contact C which are prevented from rotation. Member C<SP>1</SP> moves opposite a scale B<SP>1</SP> graduated similarly to a scale A<SP>1</SP> opposite the lower end of wire C, so that wire C is adjusted to a selected temperature.
GB3164752A 1952-12-13 1952-12-13 Improvements in adjustable electric contact thermometers Expired GB730414A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3164752A GB730414A (en) 1952-12-13 1952-12-13 Improvements in adjustable electric contact thermometers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3164752A GB730414A (en) 1952-12-13 1952-12-13 Improvements in adjustable electric contact thermometers

Publications (1)

Publication Number Publication Date
GB730414A true GB730414A (en) 1955-05-25

Family

ID=10326291

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3164752A Expired GB730414A (en) 1952-12-13 1952-12-13 Improvements in adjustable electric contact thermometers

Country Status (1)

Country Link
GB (1) GB730414A (en)

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