Lot Essay
A fine and rare example of a Georgian physics apparatus designed by James Ferguson (1710-1776) to demonstrate the principles of Newtonian mechanics.
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W. & S. Jones, circa 1800
Details
Ferguson's Combined Mechanical Powers Demonstration Apparatus
W. & S. Jones, circa 1800
signed W. & S. JONES 30 Holborn London, arm with twelve notches for weights, attaches to steel axis with screw for turning brass cogged wheel, a system of pulleys to support the 72 oz. weight, supported on tall lacquered brass column, the base with three screw feet with six small weights in fitted case with two brass handles, label to front Ferguson's M. Powers Combined
20¼ x 8¼ x 3¼in. (51.5 x 21 x 8.5cm.)
W. & S. Jones, circa 1800
signed W. & S. JONES 30 Holborn London, arm with twelve notches for weights, attaches to steel axis with screw for turning brass cogged wheel, a system of pulleys to support the 72 oz. weight, supported on tall lacquered brass column, the base with three screw feet with six small weights in fitted case with two brass handles, label to front Ferguson's M. Powers Combined
20¼ x 8¼ x 3¼in. (51.5 x 21 x 8.5cm.)
Literature
Ferguson, J., Lectures on Select Subjects in Mechanics, Hydrostatics, Hydraulics, Pneumatics, and Optics (London: 1776), pl. VI
Special notice
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