Drawing. Design for hinged boards with pulleys for a driving band, 2 views and section of “Pulley frame No 1” that is shown fixed to one of the boards. Also 2 views and section of “No 2” that appears to have been intended to be fixed elsewhere. Endorsed in ink: “J. Watt / Apl. 5th 1810, 22 ¾" x 15 ¼", Coarse laid paper, no watermark. Drawing. Design for hinged boards with pulleys for a driving band 1810
The original engine of Henry Bell's paddle steamer, ‘Comet’, by John Robertson and David Napier, Glasgow, Scotland, 1812 The original engine of Henry Bell's paddle steamer 1812
Model of an independent type 'Cabinet' rotative beam engine, with self-supporting iron frame and cistern bed, made by Boulton, Watt & Co., and owned by James Watt, c1813, with tin container, for cigarettes, containing nineteen steel flat washers, fourteen slotted brass dome-head machine screws and an ‘L’ shaped flat piece of wood. Model, of an 'Independent' type beam engine by Boulton, Watt & Co., 1813 1812-1814