The Patent Model of the "Screw Clock" with maintaining power of James Tuerlingx, New York Signed and dated 1856, for Patent No. 15344, issued January 6, 1857

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Lot 130
The Patent Model of the "Screw Clock" with maintaining power of James Tuerlingx, New York
Signed and dated 1856, for Patent No. 15344, issued January 6, 1857

US$ 3,000 - 5,000
£ 2,400 - 3,900

The Art of Time

7 Jun 2016, 13:00 EDT

New York

The Patent Model of the "Screw Clock" with maintaining power of James Tuerlingx, New York
Signed and dated 1856, for Patent No. 15344, issued January 6, 1857
The model consists of a pair of circular plates joined by three slender rods in which is planted a central spiral screw passing through a tapered cylindrical weight that that can be raised to wind the clock. The weight carries a pair of tapered rectangular steel pallets the engage the screw as the weight descends turning the main wheel of the clockwork and thus the lever escapement. A pair of steel rods parallel to the spiral and fixed to the weight turn with it. At their upper end, a geared cross piece engages the motion work driving the hands. On a turned wood base and enclosed by a later plastic cylinder
7 ¾ in (20cm) high
Contacts
The Patent Model of the "Screw Clock" with maintaining power of James Tuerlingx, New York Signed and dated 1856, for Patent No. 15344, issued January 6, 1857
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