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
GB1753638A
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Individual
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Individual
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Priority to GB1753638ApriorityCriticalpatent/GB498122A/en
Publication of GB498122ApublicationCriticalpatent/GB498122A/en
G04C21/00—Producing acoustic time signals by electrical means
G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Electromechanical Clocks
(AREA)
Abstract
498,122. Electric alarm clocks. MOORE, H. E., and RICKETS, W. J. July 20, 1937, No. 17536/38. Divided out of 497,294. [Class 139] Alarm mechanism for electric synchronous motor clocks comprises a member 5 vibrated by the motor magnet or a mains excited electromagnet and released at a predetermined time by the clock-timing gear, the member 5, by means of a step-by-step mechanism 1, serving to rotate an alarm-operating shaft 8. One or more cams 9 may be mounted on the shaft and arranged to operate chiming hammers 10.
GB1753638A1937-07-201937-07-20Improvements in and relating to alarm mechanism for electric clocks
ExpiredGB498122A
(en)