thomas. Dozer. June 01st , 2018.
Bulldozers grew more sophisticated as time passed. Improvements include drivetrains analogous to (in automobiles) an automatic transmission instead of a manual transmission such as the early Euclid C-6 and TC-12 or Model C Tournadozer blade movement controlled by hydraulic cylinders or electric motors instead of early models cable winch/brake and automatic grade control. Hydraulic cylinders enabled the application of down force more precise manipulation of the blade and automated controls.
Widespread acceptance of the bull-grader does not seem to appear before the mid-1930s. The addition of power down-force provided by hydraulic cylinders instead of just the weight of the blade made them the preferred excavation machine for large and small contractors alike by the 1940s by which time the term "bulldozer" referred to the entire machine and not just the attachment.
In military use dozer blades are fixed on combat engineering vehicles and can optionally be fitted on other vehicles such as artillery tractors such as the Type 73 or M8 Tractor. Dozer blades can also be mounted on main battle tanks where it can be used to clear antitank obstacles mines and dig improvised shelters. Combat applications for dozer blades include clearing battlefield obstacles and preparing fire positions.
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