FR729130A - Improvements to electro-magnetic clockwork mechanisms - Google Patents

Improvements to electro-magnetic clockwork mechanisms

Info

Publication number
FR729130A
FR729130A FR729130DA FR729130A FR 729130 A FR729130 A FR 729130A FR 729130D A FR729130D A FR 729130DA FR 729130 A FR729130 A FR 729130A
Authority
FR
France
Prior art keywords
electro
magnetic
clockwork mechanisms
clockwork
mechanisms
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
Other languages
French (fr)
Inventor
Alfred Massey-Allen
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.)
North & Sons Ltd
Original Assignee
North & Sons 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 North & Sons Ltd filed Critical North & Sons Ltd
Application granted granted Critical
Publication of FR729130A publication Critical patent/FR729130A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C1/00—Winding mechanical clocks electrically
    • G04C1/02—Winding mechanical clocks electrically by electromagnets
    • G04C1/022—Winding mechanical clocks electrically by electromagnets with snap-acting armature
    • G04C1/024—Winding mechanical clocks electrically by electromagnets with snap-acting armature winding-up springs

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
FR729130D 1931-01-02 1931-12-31 Improvements to electro-magnetic clockwork mechanisms Expired FR729130A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB729130X 1931-01-02

Publications (1)

Publication Number Publication Date
FR729130A true FR729130A (en) 1932-07-19

Family

ID=10495429

Family Applications (1)

Application Number Title Priority Date Filing Date
FR729130D Expired FR729130A (en) 1931-01-02 1931-12-31 Improvements to electro-magnetic clockwork mechanisms

Country Status (1)

Country Link
FR (1) FR729130A (en)

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