Gradall started producing its famous excavator during the 1940's, during a time wherein the second World War had caused a scarcity of workers. This decline in the work force brought a huge need for the delicate work of finishing and grading highway projects.
A Cleveland, Ohio construction business referred to as Ferwerda-Werba-Ferwerda faced this specific dilemma first hand. Two brothers, Koop and Ray Ferwerda had relocated to the United States from the Netherlands. They were partners in the business which had become one of the major highway contractors in the state of Ohio. The Ferwerdas' set out to build a machinery which will save both their business and their livelihoods by inventing a unit which would do what had before been manual slope work. This creation was to offset the gap left in the worksite when a lot of men had joined the military.
The brothers initially created a device that had 2 beams set on a rotating platform, which was attached on top of a used truck. They utilized a telescopic cylinder to be able to move the beams out and in. This enabled the attached blade at the end of the beams to pull or push dirt.
The Ferwerda brothers improved on their initial design by creating a triangular boom to create more strength. Then, they added a tilt cylinder which allowed the boom to rotate 45 degrees in either direction. This new unit could be equipped with either a blade or a bucket and the attachment movement was made possible by placing a cylinder at the back of the boom. This design powered a long push rod and allowed much work to be finished.
Numerous digging buckets became available on the market not long after. These buckets in sizes varying from 15 inch, 24 inch, 36 inch and 60 inch buckets. There was also a 47 inch heavy-duty pavement removal bucket that was also available.