Korfhage and Son, Buer, Germany, 1952.
Two train with hour count wheel strike. Combined cast iron flat bed with plate and
spacer construction. Graham deadbeat escapement with adjustable pallets. Planet and ring
gear maintaining power. Movement is equipped with a one minute period, differential type
gravity train remontoire. Electric and manual
winding. 16"w x 16"h x 16"d.
Based strictly on an engineering level, this is one of the better made clocks I've
seen. The Vulliami style bushings have very long journals. The fit, finish and gauge of
the wheel works are finely executed. It is the smallest version of two train model made by
this company. This movement was originally installed in a school in Denmark. After a
period of only four years it was replaced by an electronic system. It then went to the
provincial museum of Schleswig-Holstein, Germany. The museum dissolved ten years ago. A
medium sized, manually wound, three train version can be seen here.
Planetary maintaining power is the most reliable system for this purpose. It also
provides gear reduction for heavy weights and is particularly useful in electric wind
situations to reduce stress on the motor drive. Since the electric winding may occur
during a strike sequence, the planetary gear system used for maintaining power in the time
train is also used in the strike train. Compare with Potts
The Korfhage company is still in business today and is a large machine tool