초록 ▼

A method for making replacement grouser bars particularly contoured to fit rock worn grouser shoes from blanks cut from inexpensive sheet metal. The blank has a straight lower edge and a curved upper edge such that the bar is thicker at the ends than in the middle. The straight lower edge is easily

A method for making replacement grouser bars particularly contoured to fit rock worn grouser shoes from blanks cut from inexpensive sheet metal. The blank has a straight lower edge and a curved upper edge such that the bar is thicker at the ends than in the middle. The straight lower edge is easily double beveled and the blank is reverse forged to obtain a finished grouser bar having a straight upper edge and a curved lower edge, the bar still being thicker at the ends than in the middle.

대표청구항 ▼

A method of making a replacement grouser bar having a straight upper edge and a curved lower edge with end portions wider than the center comprising the steps of: forming a blank having a concavely curved upper edge and a straight lower edge with the ends wider than the central portion; beveling sai

A method of making a replacement grouser bar having a straight upper edge and a curved lower edge with end portions wider than the center comprising the steps of: forming a blank having a concavely curved upper edge and a straight lower edge with the ends wider than the central portion; beveling said straight lower edge; supporting said blank in a die defining a die cavity having a bottom, said bottom having a straight horizontal central portion and downwardly curving side portions, said bottom further being V-shaped in width to preserve said bevel on said lower edge; applying downward force to said upper concavely curved edge along a horizontal plane parallel to said straight lower edge whereby said curved upper edge is substantially straightened and said beveled straight lower edge is curved to conform to the downward curvature of said die bottom.