Similar use petrol engines:Maytag washing machine motor:

A somewhat more rustic washing machine arrangement:

A very representative small water cooled petrol engine:

Several somewhat larger petrol engines:

Crossley Bros. Petrol Engine (Otto/Crossley Patent) Manchester:

All photos property of Michael Koenig - All rights Reserved.
Source: Upper photos; Assorted Kentucky Farm Machinery Shows.
Bottom three photos; Toleman Machinery Museum; Lexington, Kentucky, USA.