A German mahogany and maplewood observatory wall regulator, type A1
A German mahogany and maplewood observatory wall regulator, type A1

SIGMUND RIEFLER, MUNICH, NO. 117: DATED 1905

Details
A German mahogany and maplewood observatory wall regulator, type A1
Sigmund Riefler, Munich, No. 117: dated 1905
The 9½in. silvered dial signed S. Riefler Mnchen D.R.P. No. 50739 No. 117, D.R.P. No. 100870 1905 with finely sculpted blued steel hands, typical observatory lay-out with sweep minutes, seconds at XII and hours calibrated 0-XI in the outer ring, the inner calibrated 12-23, cut-out by the maker's signature for displaying the electric contacts for the remontoire, the substantial movement with thick brass square-cut plates with four pillars secured with steel screws at the backplate punch-numbered 117 and milled brass nuts to the front plate punch-numbered 117, the remontoire coils mounted to the right side of the plates, Riefler's patent double-wheel coaxial escapement with jewelled pallets and pivoting on two knife edges resting on polished steel roundels set into the brass pendulum bracket stamped D.R.P. 50739, Riefler Mnchen No. 159 suspending the invar type K pendulum, signed and numbered on the bob Riefler Mnchen D.R.P. 100870 587., the movement supported on a massive gold-painted iron bracket fixed to the wall independantly of the maple backboard, the mahogany-framed case secured with milled bolts to the side of the backboard with a glazed front door, the sides glazed to view the movement with the lower two thirds set with panels of maple; sold with an original Riefler 'manual' Präzisions-Pendeluhren und Zeitdienstanlagen fr Sternwarten von Dr. S. Riefler, Mnchen, 1907 and Riefler pendulum weight box.
59¼in. (15.5cm.) high
Provenance
Recorded in the Riefler records as leaving the workshops on 18th August, 1906 and presented by Clemens Riefler to Dr Kurt Dietzschold.

Lot Essay

Kurt Dietzschold was born in Dresden in 1852 and educated in Karlsruhe and Aachen where he studied engineering. Soon after he took over a workshop in Glashtte making calculators, instruments and precision clocks. He became close friends with leaders of the German clock industry including Adolph Lange, Moritz Grossmann and Ludwig Strasser, Director of the German watchmaking school.
It was Grossman who recommended that Dietzschold be offered the post of Director of the Clockmakers school in Karlstein. This school was near to closing and had only three pupils and one teacher! However within three years Dietzschold turned the school around filling it to capacity manufacturing clocks, instruments and machine tools, many of which were to his own design. His pioneering work laid the foundations for the development and expansion of the clock and watch industry in Germany.
In later life he suffered from extremely poor vision and then total blindness but still managed to publish technical articles and books relying mainly on his memory. He died in Karlstein in May 1922.
It would appear from the Riefler company records that this clock was presented to Dietzschold rather than actually bought by him.
The clock appears to be in remarkably original condition - even with the original wiring. On many occasions when a regulator went back to the Riefler workshops for cleaning, components such as the pendulum or suspension block were changed or up-graded which meant their serial numbers no longer matched their original factory specification. However on this example all the component serial numbers for No. 117 match the factory records

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