GB509608A - Improvements in or relating to electric synchronous-motor clocks - Google Patents

Improvements in or relating to electric synchronous-motor clocks

Info

Publication number
GB509608A
GB509608A GB168438A GB168438A GB509608A GB 509608 A GB509608 A GB 509608A GB 168438 A GB168438 A GB 168438A GB 168438 A GB168438 A GB 168438A GB 509608 A GB509608 A GB 509608A
Authority
GB
United Kingdom
Prior art keywords
wheel
motor
relating
polepieces
shaft
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
GB168438A
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.)
HENRY KENNETH MORRISON
Original Assignee
HENRY KENNETH MORRISON
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 HENRY KENNETH MORRISON filed Critical HENRY KENNETH MORRISON
Priority to GB168438A priority Critical patent/GB509608A/en
Publication of GB509608A publication Critical patent/GB509608A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C15/00—Clocks driven by synchronous motors
    • G04C15/0009—Clocks driven by synchronous motors without power-reserve

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

509,608. Electric clocks. MORRISON, H. K. Jan. 18, 1938, No. 1684. [Class 139] Framework.-In a synchronous-motor clock, the motor and one or more steps of the reduction gearing form a separate unit and one or more of said gear steps is a noiseless or noiseabsorbing gear. The motor unit is clamped by screws 2, 2a, passing through polepieces 4, 4a into pillars 14, 15 on the rear plate A and comprises a magnet 3, of which the core is in magnetic contact with the polepieces, and a toothed rotor 5 ; the shaft 5a of the latter carries frictionally a fly-wheel 7 and rigidly a pinion 8 meshing with a wheel 9 of fibre or other soundabsorbing material. The shaft 10 of wheel 9 carries also a wheel 11 which, when the motor unit is in position, meshes with a wheel in the train between plates A and B.
GB168438A 1938-01-18 1938-01-18 Improvements in or relating to electric synchronous-motor clocks Expired GB509608A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB168438A GB509608A (en) 1938-01-18 1938-01-18 Improvements in or relating to electric synchronous-motor clocks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB168438A GB509608A (en) 1938-01-18 1938-01-18 Improvements in or relating to electric synchronous-motor clocks

Publications (1)

Publication Number Publication Date
GB509608A true GB509608A (en) 1939-07-18

Family

ID=9726220

Family Applications (1)

Application Number Title Priority Date Filing Date
GB168438A Expired GB509608A (en) 1938-01-18 1938-01-18 Improvements in or relating to electric synchronous-motor clocks

Country Status (1)

Country Link
GB (1) GB509608A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2642714A (en) * 1947-12-23 1953-06-23 Gen Motors Corp Electric clock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2642714A (en) * 1947-12-23 1953-06-23 Gen Motors Corp Electric clock

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