Coulter Plough

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Coulter Plough

Infantry Tank Mk. I (WD number T.3433, registration number MHM 788), equipped with the Fowler Coulter Plough.

Chain drive installed on tanks that were equipped with the Fowler Coulter Plough.

The problem of clearing paths for tanks through minefields was appreciated as early as January 1937 and two devices, the Coulter Plough and Fowler Rollers, were designed for fitting to the Infantry Tank Mk I. The Plough was eventually chosen and tested on a production vehicle in 1939. It consisted of two pivoted girder arms, mounted on the hull sides and raised and lowered via chains from a power take-off on the rear drive shaft. The mine plow idea was considered so good buy the army that a decision was made to convert 70 tanks to use it. The device was never used in combat though provided experience for later adaptations of other vehicles.

The first recorded combat use is by a “Bullshorn” plow on a Churchill tank of the British 79th Armoured Division, on Sword Beach during the Allied invasion of Normandy (this was one of “Hobart’s Funnies” specialized vehicles). The “Bullshorn” was just one of various designs of plow that were tested and used by the British.


Forschungsmitarbeiter Mitch Williamson is a technical writer with an interest in military and naval affairs. He has published articles in Cross & Cockade International and Wartime magazines. He was research associate for the Bio-history Cross in the Sky, a book about Charles ‘Moth’ Eaton’s career, in collaboration with the flier’s son, Dr Charles S. Eaton. He also assisted in picture research for John Burton’s Fortnight of Infamy. Mitch is now publishing on the WWW various specialist websites combined with custom website design work. He enjoys working and supporting his local C3 Church. “Curate and Compile“
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