| 摘要 |
<p>The intermittenly rotating driving device comprises a cylindrical base, a cam disc rotatably supported by the base and provided with equally spaced radial grooves of an odd number, a slidable shaft extending through the base in the diametrical direction thereof, and a pin secured to the slidable shaft for cooperating with the cam grooves. The outer end of each cam groove is shaped to lock the pin, and the marginal lines between two side of adjacent cam grooves are displaced from diametrical lines passing through the centres of respective outer ends of the cam grooves. EAch cam groove comprises a straight side and a curved side which are interconnected by a semicircle.</p> |
