When was the first bulldozer made

The first bulldozer, as we now think of it, was invented by James Cummings and J. Earl McLeod in Morrowville, Kansas in They created a large, dirt-pushing blade that could attach to the front of a tractor. The tractor they used was designed for plowing fields, and had endless chain treads. Their patent for this "Attachment for Tractors" was approved in The key features of a bulldozer are a large, front blade, and a powerful engine to make it possible to push large amounts of material.

Large rubber wheels have become common, but many modern bulldozers still use the continuous chain treads. Another contributor to the innovation of the bulldozer is LaPlant-Choate, who produced some of the first bulldozers and motor scrapers.

LaPlant-Choate took its name from E. LePlant, who started the company in by moving houses and pulling tree stumps, and nephew Roy Choate, joined him in The company evolved into the business of manufacturing bulldozer and snow plow blades and other equipment, and was sold in to Allis-Chalmers. Eventually, it was The Caterpillar Tractor Company that came to dominate the bulldozer market. Best Gas Tractor Company. The Caterpillar name is attributed to a photographer hired by Holt to take pictures of one of his crawler tractors.

The photographer noticed that the rollers looked like a caterpillar when he saw the image upside-down through his camera lens. Holt liked it, and the name stuck. Another term, a bull-dose, was a large dose — literally effective for a bull — of any sort of medicine or punishment. Bull-dosing also meant coercion or intimidation. In the late 19th century, bulldozing meant using brute force to push over or through any obstacle, referring to two bulls butting heads in a fight.

It was also during World War 1 that the first tracked armored tanks were developed and were first used in combat by the British Army in September, In the past, bulldozers were used all over the world and pulled by horses on farms to shift dirt. The attachment device was further developed so allow for more movement, but required the operator to get out and adjust the device manually. The Caterpillar Sixty was a 60 horsepower crawler tractor and the largest tractor made by Caterpillar during its manufacture from Before this addition, the term only referred to the attachment device.