The Caterpillar 922 Until 1959 Caterpillar had not offered a wheel loader of any sort and companies such as Hough, Allis-Chalmers, Scoopmobile and Michigan had achieved good market penetration with their machines. Cat had also realized the sales potential of the wheel loader but took its time before introducing the first machine to make sure that most of the bugs were ironed out of the design. The No.922 Traxcavator was an instant success. The Traxcavator name was a direct reference to the Track