Gradall began making its famous excavator during the 1940's, during a time wherein WWII had created a shortage of workers. This decrease in the labor force brought a huge demand for the delicate work of grading and finishing highway projects.
A Cleveland, Ohio construction company known as Ferwerda-Werba-Ferwerda faced this specific problem first hand. Two brothers, Ray and Koop Ferwerda had moved to the USA from the Netherlands. They were partners in the firm that had become one of the major highway contractors in the state of Ohio. The Ferwerdas' set out to build an equipment which would save both their business and their livelihoods by inventing a model that will carry out what had before been manual slope work. This invention was to offset the gap left in the workplace when lots of men had joined the army.
The initial device these brothers created had 2 beams set on a rotating platform and was attached directly onto the top of a truck. They used a telescopic cylinder to be able to move the beams in and out. This allowed the connected blade at the end of the beams to pull or push dirt.
The Ferwerda brothers improved on their initial design by making a triangular boom to create more strength. After that, they added a tilt cylinder which allowed the boom to turn forty-five degrees in either direction. This new unit can be outfitted with either a blade or a bucket 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 much work to be finished.
Not a long time later, numerous digging buckets became available on the market. These buckets came in 15 inch, 24 inch, 36 inch and 60 inch sizes. There was also a 47 inch heavy-duty pavement removal bucket which was offered too.