A rare American gilt-metal gravity timepiece
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A rare American gilt-metal gravity timepiece

JAMES TUERLINGX, NEW YORK, NO. 8. CIRCA 1860

Details
A rare American gilt-metal gravity timepiece
James Tuerlingx, New York, No. 8. Circa 1860
The glazed cylindrical case with moulded ormolu base resting on gilt-metal fruit-and-vine feet, the silvered dial engraved with Roman chapters and with blued steel hands, engine turned centre, the movement driven by the descent of a grape and vine decorated semi-hemispherical gilt-metal cased weight descending on an endless screw steel shaft with steel disc runners, the force transferred through a multi-pierced great wheel meshing directly with the 'scape wheel pinion of the lever escapement with cut bimetallic compensated balance with blued steel helical spring, the base plate engraved James Tuerlingx. New York. Patented Jany 6th. 1857. No. 8; with the original pine carrying case
8½ in. (22 cm.) high
Special notice
VAT rate of 5% is payable on hammer price plus buyer's premium.

Lot Essay

James Tuerlingx, apparently a Swiss emigré, received his U.S. patent number 16, 3444 titled Maintaining power for timepieces. His invention consists in a peculiar arrangement of parts for applying a weight fixed to a spiral or screw, so that, as said weight runs down and revolves on said screw, it gives motion to the other parts of a clock, either to drive the time or striking gear or both. And in connection with said arrangement of revolving weight, I make use of a peculiar means for winding the clock by raising up said weight at the same time that a retaining power is applied to continue the motions of the clock in winding.

Little is known of Tuerlingx, he apparently disappeared during the Civil War. Another clock of this type is illustrated in Brooks Palmer, The Book of American Clocks. Although the mechanism on the Palmer clock is the same, the configuration of the dial is different and in addition it is inscribed "The American Screw Clock". The same clock is also illustrated on the cover of The Dictionary of American Clock and Watchmakers by Kenneth Sposato.

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