| 摘要 |
<p>A device to change the continuous rotary motion of a shaft into a reciprocating rotary motion of a wheel comprises a cam (1), fixed onto said shaft (2) so as to rotate therewith, and a pair of cam followers (7A, 7B) caused to oscillate, when rolling on said cam (1), about the axis (9) of a body (8) housing them and transmitting, through an arm (10), the reciprocating motion to a connecting rod (12) which causes the oscillation of a sector gear (13) driving said wheel (18). The cam (1) has two profiles (1A, 1B), onto each of which engages one of the cam followers (7A, 7B). The axis of said cam (1) and the axis (9) about which oscillates the body (8) of said cam followers (7A, 7B) are at right angles and skew. <IMAGE></p> |
