摘要:
A mechanism for sharpening the roughing tool of a roughing machine. The roughing machine includes a roughing tool mounted to a rougher unit. The rougher unit is moveable between an upper position wherein the roughing tool is in an idle position and a lower position wherein the roughing tool is in a roughing position and is effective to rough the upper margin of a shoe assembly. A sharpening tool is mounted for movement between an idle position wherein it is spaced from the roughing tool and a working position wherein it is in engagement with the roughing tool. A positioning device is effective to bring the sharpening tool to its working position when the roughing tool is in its idle position.
摘要:
This invention relates to continuous sammying presses, i.e., machines for squeezing moisture from hides, leather or the like. Ordinarily, such presses employ endless revolving belts made of porous material, such as felt, and have two straight runs, one above the other, between which the hide is sandwiched. The belts are moved in the same direction and at the same speed between cooperating press rolls that are pressed one against the other. In order to reduce pressure on the belts, which is brought about by the use of the normal single pair of press rolls, the invention provides that there shall be at least two pairs of sequentially arranged press rolls. This arrangement enables the pressure at any one point to be reduced but without, however, increasing the time of processing.