GB348927A - Improvements in temperature alarms - Google Patents

Improvements in temperature alarms

Info

Publication number
GB348927A
GB348927A GB18616/30A GB1861630A GB348927A GB 348927 A GB348927 A GB 348927A GB 18616/30 A GB18616/30 A GB 18616/30A GB 1861630 A GB1861630 A GB 1861630A GB 348927 A GB348927 A GB 348927A
Authority
GB
United Kingdom
Prior art keywords
spring
wheel
shaft
cover
hammer
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
GB18616/30A
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
Priority claimed from DEU10801D external-priority patent/DE563745C/en
Priority to DEU11039D priority Critical patent/DE565114C/en
Priority to CH149743D priority patent/CH149743A/en
Priority to AT125861D priority patent/AT125861B/en
Priority to FR697581D priority patent/FR697581A/en
Application filed by Individual filed Critical Individual
Priority to GB18616/30A priority patent/GB348927A/en
Publication of GB348927A publication Critical patent/GB348927A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/04—Hydraulic or pneumatic actuation of the alarm, e.g. by change of fluid pressure
    • 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
    • G01K5/28—Measuring temperature based on the expansion or contraction of a material the material being a gas
    • 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
    • G01K5/32—Measuring temperature based on the expansion or contraction of a material the material being a fluid contained in a hollow body having parts which are deformable or displaceable
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fluid Mechanics (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Cookers (AREA)
  • Level Indicators Using A Float (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

348,927. Automatic temperature alarms. UNTERHOLZNER, J., 62, Herzogstrasse, Munich, Germany. June 18, 1930, No. 18616. [Class 47 (i).] An automatic temperature alarm, particularly for use in liquids, comprises an airtight float a which is formed at its lower end as a sealed box b with a corrugated diaphragm d and containing a liquid e. The cover carries a toothed rod f in mesh with a lantern wheel h loose on a shaft g. A clutch member i fixed to the wheel h cooperates with a clutch member k fast on the shaft g and fixed to a ratchet wheel y. A spring l holds the clutch members together, and a spiral spring o has one end fixed to the shaft g. The wheel y is connected by a spring pawl to a gear wheel p which cooperates with gears q, r to drive a hammer t against the resonant top u of the float. When the liquid e is heated and evaporates, the rod f rotates the shaft g and winds up the spring o, until an abutment n on the rod engages a flange m on the wheel h, to separate the clutch members i, k. The spring o then unwinds and drives the hammer t. A wire net x limits movement of the cover d. In a modification, the spring o is omitted, the cover d driving the shaft g with a snap action. In another modification, the cover d acts directly, with a snap action, on the hammer. The concentric corrugations of the cover d may be transversely corrugated, to increase its elasticity.
GB18616/30A 1929-06-19 1930-06-18 Improvements in temperature alarms Expired GB348927A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DEU11039D DE565114C (en) 1929-06-19 1929-12-28 Device for displaying certain temperatures
CH149743D CH149743A (en) 1929-06-19 1930-06-10 Device for displaying certain temperatures.
AT125861D AT125861B (en) 1929-06-19 1930-06-11 Temperature indicator.
FR697581D FR697581A (en) 1929-06-19 1930-06-17 Temperature indicator
GB18616/30A GB348927A (en) 1929-06-19 1930-06-18 Improvements in temperature alarms

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEU10801D DE563745C (en) 1929-06-19 1929-06-19 Device for displaying certain temperatures
DEU11039D DE565114C (en) 1929-06-19 1929-12-28 Device for displaying certain temperatures
GB18616/30A GB348927A (en) 1929-06-19 1930-06-18 Improvements in temperature alarms

Publications (1)

Publication Number Publication Date
GB348927A true GB348927A (en) 1931-05-21

Family

ID=40589791

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18616/30A Expired GB348927A (en) 1929-06-19 1930-06-18 Improvements in temperature alarms

Country Status (5)

Country Link
AT (1) AT125861B (en)
CH (1) CH149743A (en)
DE (1) DE565114C (en)
FR (1) FR697581A (en)
GB (1) GB348927A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2821951A (en) * 1955-03-21 1958-02-04 Robert W Carver Pressure indicator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1266017B (en) * 1958-02-27 1968-04-11 Earl L Pressel Temperature sensor with a membrane that moves under the action of a temperature-sensitive material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2821951A (en) * 1955-03-21 1958-02-04 Robert W Carver Pressure indicator

Also Published As

Publication number Publication date
DE565114C (en) 1932-11-26
AT125861B (en) 1931-12-10
CH149743A (en) 1931-12-01
FR697581A (en) 1931-01-20

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