Machine for roughing the margin of an upper of a shoe assembly

DETAILED DESCRIPTION In order to provide uniform roughing of the upper margin and to overcome the deficiencies of the machine of U.
S.
Pat.
No.
4090378 discussed in the preceding paragraph, the roughing machine of this invention has been improved by having the shoe assembly support movable through the upwardly concave arc between a first position in which the first end portion of the shoe assembly bottom lies in a substantially horizontal plane, a second position in which the shank portion of the shoe assembly bottom lies in a substantially horizontal plane, and a third position in which the second end portion of the shoe assembly bottom lies in a substantially horizontal plane.
In order to have all portions of the upper margin lie in a substantially horizontal plane as they move past the roughing tool and thus ensure uniform roughing of the upper margin by the roughing tool, the machine of this invention comprises: means for initially retaining the support in the first position; means effective pursuant to movement of the support past the roughing tool when the juncture between the first end portion and the shank portion of the shoe assembly bottom is in registration with the roughing tool to move the support from its first position to its second position; and means effective pursuant to movement of the support past the roughing tool when the juncture between the shank portion and the second end portion of the shoe assembly bottom is in registration with the roughing tool to move the support from its second position to its third position.