GB249835A - Improvements in and relating to alarm clocks - Google Patents

Improvements in and relating to alarm clocks

Info

Publication number
GB249835A
GB249835A GB5726/26A GB572626A GB249835A GB 249835 A GB249835 A GB 249835A GB 5726/26 A GB5726/26 A GB 5726/26A GB 572626 A GB572626 A GB 572626A GB 249835 A GB249835 A GB 249835A
Authority
GB
United Kingdom
Prior art keywords
wheel
spring
alarm
ratchet
shaped
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
GB5726/26A
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.)
CIE IND DE MECANIQUE HORLOGERE
Original Assignee
CIE IND DE MECANIQUE HORLOGERE
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 CIE IND DE MECANIQUE HORLOGERE filed Critical CIE IND DE MECANIQUE HORLOGERE
Publication of GB249835A publication Critical patent/GB249835A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B23/00—Arrangements producing acoustic signals at preselected times
    • G04B23/02—Alarm clocks
    • G04B23/023—Driving, e.g. by springs or common drive with the clockwork; gears; escapements
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/001—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power
    • G04B11/003—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power with friction member, e.g. with spring action

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Electromechanical Clocks (AREA)
  • Emergency Lowering Means (AREA)

Abstract

249,835. Compagnie Industrielle de MÚcanique HorlogÞre. March 27, 1925, [Convention date]. Alarm mechanism; wheels, pinions, and arbors. -Figs. 1 and 4 illustrate the known art in which a ratchet wheel 3 on the arbor 2 of the alarm spring 1 carries freely on it a wheel 4 which has a spring-pressed pawl 15 coasting with the teeth of the ratchet. This wheel 4 drives a pinion 8, centre wheel 9, pinion 11 and third wheel 13. Usually a dome-shaped spring 14 is clinched rigidly in an extension 15 of the ratchet wheel 3 and bears upwardly and frictionally upon the wheel 4 to keep the pawl 5 in engagement. This leads to retarding friction when winding the spring 1. In the invention, Figs. 7-9, the dome-shaped spring 18 is detachably secured to the wheel 4 by a slot 20 in the spring and a pin 22 on the wheel 4. The inner part of the spring is shaped as at 19<1>, 19<2> and when assembled the part 19<1> engages in a groove 25 in the extension 15, so that on winding the alarm spring the spring 14 and wheel 4 both remain stationary.
GB5726/26A 1925-03-27 1926-03-01 Improvements in and relating to alarm clocks Expired GB249835A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR608158T 1925-03-27
FR1616569X 1925-03-27
FR249835X 1925-03-27

Publications (1)

Publication Number Publication Date
GB249835A true GB249835A (en) 1926-07-22

Family

ID=61800712

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5726/26A Expired GB249835A (en) 1925-03-27 1926-03-01 Improvements in and relating to alarm clocks

Country Status (3)

Country Link
US (1) US1616569A (en)
FR (1) FR608158A (en)
GB (1) GB249835A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3121990A (en) * 1960-10-05 1964-02-25 Lip Sa Watch movement

Also Published As

Publication number Publication date
US1616569A (en) 1927-02-08
FR608158A (en) 1926-07-22

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