Trackson Company leading to the Caterpillar Track Loaders today.

A small piece of history behind the current Caterpillar Track Loader today.
In December 1951 the Caterpillar Company purchased the Trackson Company, and the cable Traxcavators and the HT4, became Caterpillar Traxcavators.

In late 1952, the all-new No.6 Caterpillar Shovel was announced by Caterpillar, and cable Traxcavator production ceased.

The Caterpillar HT4 and No.6 Shovel were the only hydraulic Traxcavators available from Caterpillar until the all-new 933, 955 and 977 made their appearance in early 1955.

The name "Traxcavator" was a registered Caterpillar brand name for many years, but has developed into common usage to describe any tracked shovel/loader.