1851 Great Exhibition: Official Catalogue: Class VI.: Walter Westrup
442. WESTRUP, WALTER, 282 Wapping — Inventor.
Patent corn mill, made at the works of Mr. Thomas Middleton, Lomax Street, Southwark.
This mill consists of two pairs of stones, with conical grinding surfaces, fixed on one shaft. The upper pair crushes the wheat, the finer parts of the flour produced
thereby are instantly driven away through a cone of wire placed under them; the residue of the meal then passes through the lower pair of stones, where the grinding is completed.
The superior advantages of this system of grinding are-
1st. Eight to ten bushels of wheat can be completely and perfectly ground per hour.
2nd. Is a very considerable saving of power.
3rd. The meal is delivered from the stones quite cool, having undergone no pressure; the flour will consequently keep in good condition, and be therefore less likely to be injured by any atmospheric change.
4th. A better quality of flour is produced than by the common mode of grinding.
5th. The stones are more easily kept in truth, and take much less time in dressing.