Patent ID: 9736991
Date: 2017-08-22
CPC Classifications: A01G

Claim:
1. A reciprocating working machine comprising: a first blade and a second blade which are guided so as to reciprocate and disposed so as to overlap each other; and a first eccentric cam and a second eccentric cam which eccentrically rotate about a rotary shaft; wherein the first blade has an elongated aperture slidably fitted around the first eccentric cam so as to reciprocate the first blade; wherein the second blade has an elongated aperture slidably fitted around the second eccentric cam so as to reciprocate the second blade; wherein the first eccentric cam and the second eccentric cam are arranged at a 180-degree phase from each other; wherein the elongated aperture of the first blade and the elongated aperture of the second blade are adjacent to each other in a direction of the rotary shaft; wherein one of the first blade and the second eccentric cam has a beveled surface facing the other of the first blade and the second eccentric cam; and wherein when the first blade and the second eccentric cam are relatively moved in the direction of the rotary shaft so that the second eccentric cam is fitted into the elongated aperture of the first blade, the first blade and the second eccentric cam are relatively moved away from each other in the direction of the rotary shaft due to interaction via the beveled surface.