DE217583C - - Google Patents

Info

Publication number
DE217583C
DE217583C DENDAT217583D DE217583DA DE217583C DE 217583 C DE217583 C DE 217583C DE NDAT217583 D DENDAT217583 D DE NDAT217583D DE 217583D A DE217583D A DE 217583DA DE 217583 C DE217583 C DE 217583C
Authority
DE
Germany
Prior art keywords
minutes
base
clock
glass tube
hourglass
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
DENDAT217583D
Other languages
German (de)
English (en)
Publication of DE217583C publication Critical patent/DE217583C/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
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Packages (AREA)
DENDAT217583D Active DE217583C (cs)

Publications (1)

Publication Number Publication Date
DE217583C true DE217583C (cs)

Family

ID=478878

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT217583D Active DE217583C (cs)

Country Status (1)

Country Link
DE (1) DE217583C (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4408894A (en) * 1982-04-09 1983-10-11 Hemperly Richard E Multiple selectable timer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4408894A (en) * 1982-04-09 1983-10-11 Hemperly Richard E Multiple selectable timer

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