12
Sep
In the period since the early 1970's we have seen further developments. All 3 rolls on larger plate bending machines were now very often driven by independent hydraulic motors.
This eliminated the need for a clutch and became a more suitable design for heavier machines.
12
Sep
The original power rolls were generally of the Pyramid Type. The old plate bending operators did however come up with ways to deal with this problem and some of them are described in the ‘The Recent History of Design and Selection of Plate Bending Machines’ (Part 1).
12
Sep
The curving of wrought iron plate by passing a plate through a set of rollers probably dates back to the late 18th Century when Henry Cort, an English iron master rolled barrel hoops in the 1780's. The early machines would be small and could be directly hand driven or by a geared handle to give some mechanical advantage.
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