Reciprocally driving device

A mechanism for reciprocally driving a movable member, said mechanism comprising:

• a constant speed drive source movable in a predetermined direction;
• movement converting means for converting the movement of said drive source into a reciprocal movement in which the time rquired for backward movement is shorter than the time required for forward movement;
• output means connected to said movement converting means to put out a reciprocal movement for driving the movable member;
• and
• speed control means for controlling the speed of the forward movement of said output means so as not to exceed a predetermined speed, said speed control means comprising overrunning clutch means interposed between said constant speed drive source effecting a constant speed movement and said output means.

A reciprocally driving device comprising:

• a constant speed drive source normally movable in a predetermined direction;
• a reciprocal movement converting mechanism connected to said drive source and converting the movement thereof in said predetermined direction into a reciprocal movement in which the time required for backward movement is shorter than the time required for forward movement;
• a driven member connected to said reciprocal movement converting mechanism;
• and
• a control mechanism connected to said driven member to control the speed of the forward movement thereof so as not to exceed a predetermined speed, said control mechanism comprising an overrunning clutch interposed between said constant speed drive source and said driven member.

A reciprocally driving device comprising:

• a constant speed drive source normally movable in a predetermined direction;
• crank means connected to said drive source and normally rotatable in a predetermined direction;
• first lever means engaged with said crank means and effecting a quick return reciprocal pivotal movement;
• second lever means connected to said first lever means and effecting a pivotal movement;
• straight guide means;
• slider means guided by said straight guide means and engaged with said second lever means to effect a reciprocal movement;
• output means connected to said slider means and connected to a driven member;
• and
• control means for controlling the speed of the forward movement of said output means so as not to exceed a predetermined speed, said control means comprising overrunning clutch means interposed between said constant speed drive source effecting a constant speed movement and said output means.