Holt tractor

The Holt tractors were a range of caterpillar tractors built by the Holt Manufacturing Company, which was named after Benjamin Holt

Military Use
They were most famously used by the British, French and American armies in World War I for hauling heavy artillery: including BL 9.2 inch Howitzer and the BL 8 inch Howitzer. By 1916 more than 1000 were in use by British and by the end of the war around 10,000 had been used.



Specification
There were at least two models used for military purposes: the Holt 75 and the Holt 120. The 120 hp model had a tiller-type steering wheel at the front that was usually covered. It weighed about 18000 lbs. The 75 h.p. model used two tracks for steering. It had a maximum speed of 15 mph and had a gasoline engine.

Literature

 * Holt Tractors Photo Archive: An Album of Steam and Early Gas Tractors, ISBN 978-1-882256-10-5