| 摘要 |
A manually-operable mechanical device to draw the bow string of a crossbow is disclosed. The device comprises a housing removably engageable with the forward end of a crossbow. An elongate arm having first and second ends is extends through the housing and is rectilinearly movable with respect thereto in at least one direction coaxial with the longitudinal axis of the arm. The arm is further provided with a fork at one end thereof for engaging the crossbow bow string as the arm is moved. The housing also includes a manually operable drive mechanism provided in mechanical communication with the arm whereby operation of the drive mechanism effects rectilinear movement of the arm in the at least one direction coaxial with the longitudinal axis of the arm.
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