Valve-gear on Boulton & Watt rotative engine, 1788.
4 0 c m
 
26cm
actual image size: 18cm x 32cm

Valve-gear on Boulton & Watt rotative engine, 1788.

© Science Museum / Science & Society Picture Library

Description

Sectional view of valve-gear on the 'Lap' Engine made by Boulton & Watt. The first products of the famous engineering partnership of Matthew Boulton (1728-1809) and James Watt (1769-1848) were, like earlier engines, purely pumping machines. It was only later, in about 1782, that Watt began to introduce the rotative engine that could be harnesed directly to rotating machinery, and so made posible a huge expansion of all types of industry that needed power.
 

Image Ref.

10280819
 

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