The Alarm Clock Index of Erich Dees

 

Identifying  movements of mechanical alarm clocks

All movements are listed in descending order of height or diameter. All dimensions are given in mm. Square movements are characterized with height  x width x depth (inner distance of plates). Round movements are listed with diameter x inner distance of plates.

Alarm clocks with square back plates and 102 – 83 mm height
Alarm clocks with square back plates and 82,5 – 75 mm height
Alarm clocks with square back plates and 74,5 – 70,5 mm height
Alarm clocks with square back plates and 70 – 66,5 mm height
Alarm clocks with square back plates and 66 – 60,5 mm height
Alarm clocks with square back plates and 60   –  44    mm height
Alarm clocks with round back plates and 99,9 - 56 mm diameter
Alarm clocks with round back plates and 56 - 54,5 mm diameter
Alarm clocks with round back plates and 54,5 - 54 mm diameter
Alarm clocks with round back plates and 54 - 51 mm diameter
Alarm clocks with round back plates and 50,5 - 46 mm diameter
Alarm clocks with round back plates and 45,5 - 34 mm diameter

 

 

Background

For many years DGC-member Erich Dees has been  a passionate collector of mechanical alarm clocks, and he has gradually  assembled  a comprehensive data-base to help in identifying the manufacturers of movements of mechanical alarm clocks that are not stamped with the makers trademark. The characteristic shape and size of the back plates of the movements is used as the primary search criteria. Currently the data base includes 1100+ movements. The time period covered is  roughly 1880 – 1996. Mainly German models are presented, but some alarm clock movements of foreign manufacturers  are included as well.

The illustrations of the back plates and information of height/width/depth in mm and descending order offer an efficient way to identify the manufacturer of an unsigned movement. Erich Dees has adopted  this classification system  primarily based on the standards used in the horological spare part catalogues of the German dealers Flume 1) and Jacob 2), mainly between 1925 and 1967. The identification of movements at that time was often difficult because the majority of the movements had no trade marks. Therefore, these catalogues were issued with accurate drawings of the black plates of the alarm clock movements.

Erich Dees has collected all available information and completed the previously published  lists with own research results, covering all the years until  the production of mechanical alarm clock movements was completely abandoned in Germany.

The worldwide community of mechanical alarm clocks collectors and the “Deutsche Gesellschaft fuer Chronometrie” are very happy that Erich Dees has now decided to make his invaluable data base available to the public at the website of the DGC. The result is a worldwide unique research resource for mechanical alarm clocks.

The free use of the data base is permitted for all private, noncommercial collecting and research  purposes under the “Fair Use” provision of Copyright law. But the Copyright for the data remains with Erich Dees. Further  distribution or any commercial utilization of the data base or parts of it is strictly prohibited. The current data base makes no claim to be complete. All information is subject to change without further notice.

 

Instructions

To simplify the search process the illustrations of alarm clock back plates are strictly ordered by size in descending order. The primary search criteria is the height (mm) of the back plates. If you have identified an illustration where drawing and size comply with your movement you have found the  manufacturer.

For several movements the dimensions are missing or only a rough indication was available. If you have any questions, or can provide additional information regarding any of the movements in the data base, or if you own  movements which are still missing in Erichs data base your comments  are highly appreciated. In this case please send an email to Erich Dees:

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Thank you very much for your support.

 

Nuremberg, February 2013