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US 4,281,529 AGranted
Method of manufacturing a resilient, single or double C-shaped rail clamp
AssigneeEverts & Van der Weyden Exploitatiemaatschappij Ewem/N.V.
InventorMarius H. Lubbers
Life of this patent
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Abstract
A method of manufacturing a resilient, C-shaped rail clamp wherein rod-shaped material is clamped tight at one end and starting from the clamped end the rod is deformed into the desired shape by a movement of a roller towards the free end while exerting local pressure.
Claims7
The method of making a resilient, C-shaped rail clamp, which comprises the steps of:
- (a) fixing one end of an elongate bar to leave the remainder of the bar exposed;
- and
- (b) deforming said bar into C-shape by engaging one side of the bar with a roller while leaving the opposite side wholly free and travelling the roller through a closed path which begins and ends adjacent said fixed end of the bar.
Dependencies are inferred from the claim text.