Gradall started producing its famous excavator in the 1940's, during a time wherein World War II had created a scarcity of workers. This decline in the labor force brought a huge need for the delicate work of finishing and grading highway projects.
Ferwerda-Werba-Ferwerda was a Cleveland, Ohio based construction business which experienced this particular problem first hand. Ray and Koop Ferwerda were brothers who had relocated from the Netherlands. They were partners in the firm which had become one of the leading highway contractors in the state of Ohio. The Ferwerdas' set out to build an equipment which will save both their livelihoods and their business by inventing a model that would perform what had before been manual slope work. This invention was to offset the gap left in the worksite when lots of men had joined the army.
The brothers initially created a device which had 2 beams set on a rotating platform, which was connected on top of a second-hand truck. They utilized a telescopic cylinder in order to move the beams out and in. This enabled the connected blade at the end of the beams to push or pull dirt.
The Ferwerda brothers improved on their first design by making a triangular boom to produce 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 bucket or a blade and the attachment movement was made possible by placing a cylinder at the rear of the boom. This design powered a long push rod and allowed a lot of work to be completed.
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 which was also offered.