Single shaft tamper with reciprocating rotational output

A split tool tamper comprising:

• a motor;
• a frame;,
• said motor coupled to said frame;
• a single tool shaft having a first end and a second end;
• a said first end coupled to said motor;
• a tamping tool;
• said tamping tool coupled to said second end;
• said motor is pivotably coupled to said frame by a generally horizontal pivot;
• said motor is further coupled to said frame by an extension member attached to said motor at a location spaced apart from said pivot;
• said motor provides a generally reciprocating rotational motion to said tool shaft;
• said motor is coupled to said tool shaft by a conversion device;
• said motor includes a housing and a rotating shaft;
• said conversion device includes:
• an eccentric hub having a medial opening and a circular sidewall;
• said hub sidewall having an eccentric recess
• said axle passing through said medial opening and coupled to said hub;
• a yoke having a shaft and a pivot pin;
• said yoke shaft disposed in said hub eccentric recess;
• a clevis disposed at said tool shaft first end;
• said clevis coupled to said yoke pivot pin;
• and
• said tool shaft is supported by at least two bearings in said housing.