1851 Great Exhibition: Official Catalogue: Class IX.: William Smith
From Graces Guide
270. SMITH, WILLIAM, Kettering, Northamptonshire — Inventor and Manufacturer.
Improved double-blast winnowing machine, for dressing corn and seeds. A portable board is turned back in the hopper, so that it gives the rollers the power of pulling the corn in a rough state through from the thrashing machine, without stoppage.
New horse-hoe, simple in construction, and principally formed of wrought iron. It is drawn with shafts; and the wheels may be expanded or contracted, so as to be kept between the rows of the plants.
A similar machine for hoeing on the ridge or on the flat.