1851 Great Exhibition: Official Catalogue: Class IX.: Edward Hammond Bentall
217. BENTALL, EDWARD HAMMOND, Heybridge, near Maldon, Essex — Inventor and Manufacturer.
Patent broad-share and subsoil plough, combined in one implement, with beam of wrought T iron. By divesting it of its side-arms, hind-wheels, and tines, it becomes a subsoil and root plough. It can be adjusted according to circumstances, by moving the tranverse cutters inserted in the frame. A point, three feet long, precedes the share on the same frame for loosening the ground.
Patent mangold, or ridge hoe, on the same principle, with pair of breasts, for moulding up root crops.
Patent double tom, with wrought-iron beam, having a double breast or mould-board cast in one piece of metal.
Patent N G H plough. A moveable lever, with a share attached in a way which renders it adjustable, and prevents any wear on the sole of the plough.
The original goldhanger plough, called the "Essex plough."
Round hogs' troughs.
Stack pillar.
Patent dynamometer, for the purpose of ascertaining the draft of implements presenting irregular resistance. The arrangement of the parts prevents the vibration of the index without diminishing the accuracy of the instrument.