Gradall started making its well-known excavator in the 1940's, during a time wherein WWII had created a shortage of laborers. This decline in the work force brought a huge demand for the delicate work of finishing and grading highway projects.
A Cleveland, Ohio construction business known as Ferwerda-Werba-Ferwerda experienced this particular problem first hand. Two brothers, Ray and Koop Ferwerda had relocated to the USA from the Netherlands. They were partners in the business that had become amongst the leading highway contractors within the state of Ohio. The Ferwerdas' set out to make a machine that will save their livelihoods and their company by making a model that would perform what had previously been manual slope work. This invention was to offset the gap left in the worksite when so many men had joined the military.
The initial device these brothers created had 2 beams set on a rotating platform and was fixed directly onto the top of a truck. They used a telescopic cylinder to be able to move the beams in and out. This enabled the fixed blade at the end of the beams to pull or push dirt.
The Ferwerda brothers improved on their first design by making a triangular boom to create more strength. Then, they added a tilt cylinder that allowed the boom to turn 45 degrees in either direction. This new model could be outfitted 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 were introduced to the market not long after. These buckets in sizes varying from 15 inch, 24 inch, 36 inch and 60 inch buckets. There was additionally a 47 inch heavy-duty pavement removal bucket which was offered too.