GB688415A - Alarm clock - Google Patents

Alarm clock

Info

Publication number
GB688415A
GB688415A GB22883/50A GB2288350A GB688415A GB 688415 A GB688415 A GB 688415A GB 22883/50 A GB22883/50 A GB 22883/50A GB 2288350 A GB2288350 A GB 2288350A GB 688415 A GB688415 A GB 688415A
Authority
GB
United Kingdom
Prior art keywords
cam
rotated
alarm
spindle
gear train
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
GB22883/50A
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.)
Gebr Junghans AG
Original Assignee
Gebr Junghans AG
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 Gebr Junghans AG filed Critical Gebr Junghans AG
Publication of GB688415A publication Critical patent/GB688415A/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
    • G04B23/04—Alarm clocks with coarse and fine setting of the preselected times

Landscapes

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

Abstract

688,415. Clocks. JUNGHANS, H., and JUNGHANS, AKT.-GES. GEB. Sept. 18, 1950 [Sept. 17, 1949]. No. 22883/50. Class 139. An alarm clock, the alarm arrangement of which can be accurately set to a minute, is characterized in that for controlling the alarm arrangement there is provided a first control member rotating synchronously with the hour hand and, functionally connected with said member, a second control member which rotates synchronously with the minute hand, both control members having a common axis of rotation. The alarm release lever 28, Fig. 1, is controlled by two of the usual slotted cam and pin devices comprising a pin 21a rotated by the gear train 6a, 7 and 21 at one revolution per hour and an associated adjustable cam 23 having a slot 23a, and a pin 22a rotated at one revolution per, 12 hours by the gear train 6a, 7, 8 and 22 and an associated adjustable cam 24 having a slot 24a. The cam 23 is fixed to the alarm setting spindle 18 carrying a setting pointer 32 and is adjusted by rotation of a knob 19. The cam 24 is rotated from the shaft 18 through the reduction gear train 25, 29, 30 and 26 and its setting pointer 33 is rotated through an identical reduction gearing 25, 29, 30a and 34. The setting adjustment of the spindle 18 is facilitated by the co-operation of a sixty-toothed ratchet 37 with a pawl 38 which also prevents backward rotation of the spindle 18.
GB22883/50A 1949-09-17 1950-09-18 Alarm clock Expired GB688415A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP55272A DE902836C (en) 1949-09-17 1949-09-17 Timepieces with release, in particular alarm clock

Publications (1)

Publication Number Publication Date
GB688415A true GB688415A (en) 1953-03-04

Family

ID=7387659

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22883/50A Expired GB688415A (en) 1949-09-17 1950-09-18 Alarm clock

Country Status (2)

Country Link
DE (1) DE902836C (en)
GB (1) GB688415A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1185997B (en) * 1959-05-29 1965-01-21 Bernhard Conrad Alarm clock
FR2285647A1 (en) * 1974-09-23 1976-04-16 Union Horlogere Gros Volume PERFECTED ELECTRICAL CLOCK
DE9010225U1 (en) * 1990-07-05 1991-11-07 Junghans Uhren Gmbh, 7230 Schramberg, De

Also Published As

Publication number Publication date
DE902836C (en) 1954-01-28

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