Used Comedil Construction Cranes Berkeley

Crawler Crane
The crawler crane is a specific type of mobile crane which is available with either a telescopic boom or a lattice boom which moves upon crawler tracks. Because this unit is a self-propelled crane, it is capable of moving around a jobsite and completing tasks without a lot of set-up. Because of their enormous size and weight, crawler cranes are rather expensive and even hard to transport from one location to another. The crawler's tracks offer stability to the equipment and enable the crane to work without the use of outriggers, however, there are several units which do use outriggers. Furthermore, the tracks provide the movement of the machine.

Early Mobile Cranes
Initially, the first mobile cranes were mounted to train cars and move along specifically made short rail lines. When the 20th century arrived, the crawler tractor evolved and this brought the introduction of crawler tracks to the construction industry and the agricultural industry. Not long after, the crawler tracks were adopted by excavators and this further featured the versatility of the machinery. It was not long after when manufacturers of cranes decided that the crawler track market was a safe bet.

The First Crawler Crane
Northwest Engineering, a crane company in the USA, was the first to mount its crane on crawler tracks during the 1920s. It described the new machinery as a "locomotive crane, independent of tracks and moveable under its own power." By the mid-1920s, crawler tracks had become the preferred means of traction for heavy crane operations.

The Speedcrane
The Moore Speedcrane, developed by Ray and Charles Moore of Chicago, Illinois was amongst the first attempts to copy the rails for cranes. Manufactured within Fort Wayne, Indiana, the Speedcrane was a wheel-mounted, steam-powered, 15 ton crane. In the year 1925, a company known as Manitowoc Shipbuilding Co, from Manitowoc, Wisconsin recognized the tracked crane's marketability and potential. They decided to team up with the Moore brothers so as to manufacture it and go into business.

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