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George Kern designed the style 1 Big Ben including the case. The
style 2 Ben case was designed by August Schierholtz, and Max Schlenker
was responsible for the design of the base. The style 3, 5 and 6 Ben
cases were designed by Henry Dreyfuss. The style 4 is a modification
of style 3 and may also have been designed by Dreyfuss. The Style
7, 8 and 9 Ben cases and the Clock of Tomorrow case were designed
by Ellworth Danz.
Dates Stamped on Big Ben and Baby Ben Movements
Dates were stamped on a movement plate of most Big Ben and Baby Ben
alarm clocks. Numbers are used for the month, day and year; or just
the month and year (e.g. 5 17 15 is May 17, 1915; and 7 34 is July
1934).
Baby Bens have month, day and year from the beginning through the
end of 1928; just the month and year from 1929 through 1932; month,
day and year from 1933 through 1944; and then just the month and year
again from 1945 on.
Big Ben style 1 clocks have the month, day and year stamped on the
movement.
Big Ben style 1a and 2 clocks have month, day and year through 1928;
and just month and year from 1929 on.
Big Ben Loud Alarm clocks have the month and year stamped on the
movement.
Big Ben Chime Alarm clocks have the month and day up through 1932;
month, day and year from 1933 through World War II; and just month
and year from WWII through the end of production (1956).
Big Ben single key wind clocks (1956 on) have the month and year
stamped on the movement.
Actual transition dates I have obvserved on clocks:
Baby Ben
Month, Day and Year up to 12-15-28
Month and Year from 3-29 to 3-32
Month, Day and Year from 1-26-33 to 19-2-44
Month and year starting 5-45
Big Ben Style 1, 1a, 2, 4 and Loud Alarm
Month, Day and Year up to 10-16-28
Month and Year starting 2-29
Big Ben Single Key Wind (styles 7 and 8)
Month and Year
Big Ben Chime Alarm
Month and Year from 5-31 to 12-32
Month, Day and year from 1-25-33 to 12-5-41
Month and Year from 2-46 to the end (1956)
Clock of Tomorrow
Month and Year
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