DE81086C - - Google Patents

Info

Publication number
DE81086C
DE81086C DENDAT81086D DE81086DA DE81086C DE 81086 C DE81086 C DE 81086C DE NDAT81086 D DENDAT81086 D DE NDAT81086D DE 81086D A DE81086D A DE 81086DA DE 81086 C DE81086 C DE 81086C
Authority
DE
Germany
Prior art keywords
sand
container
channel
funnel
basin
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.)
Active
Application number
DENDAT81086D
Other languages
German (de)
English (en)
Publication of DE81086C publication Critical patent/DE81086C/de
Active legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F1/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers
    • G04F1/04—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers by movement or acceleration due to gravity
    • G04F1/06—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers by movement or acceleration due to gravity by flowing-away of a prefixed quantity of fine-granular or liquid materials, e.g. sand-glass, water-clock
    • G04F1/063—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers by movement or acceleration due to gravity by flowing-away of a prefixed quantity of fine-granular or liquid materials, e.g. sand-glass, water-clock using acoustic signalling

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Toys (AREA)
DENDAT81086D Active DE81086C (OSRAM)

Publications (1)

Publication Number Publication Date
DE81086C true DE81086C (OSRAM)

Family

ID=353591

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT81086D Active DE81086C (OSRAM)

Country Status (1)

Country Link
DE (1) DE81086C (OSRAM)

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