Wiper motion stop

Abstract

A machine for pulling and lasting a shoe upper has a mechanism for adjusting the amount of rotational travel of lasting wipers on a wiper head which move toward and rotate against the shoe during the lasting operation. The mechanism comprises a rotatably adjustable knob connected to a correspondingly adjustable threaded shaft arranged in the movable wiper head. The threaded shaft contacts the frame of the machine at the lowermost position of the wiper head, and prevents further advance of the head and further rotational advance of the wipers. The machine operator may preset the degrees of the wiper's rotational stroke by adjustment of the threaded shaft with respect to the wiper head, for the particular size shoe being lasted. Rotation of the adjustable knob also provides an indication of the size of each of the wiper's rotational stroke on a gage behind the knob.

Dependencies are inferred from the claim text.