US Patent 10408561 Device for a crossbow

A crossbow includes a barrel with a bow connected to the top thereof, a handle cooperated with a trigger, a retention unit and a cocking device. The cocking device includes two slots respectively defined in two sides of the barrel and each slot includes a holding member slidably located therein. A link unit is connected between the two holding members and barrel. The holding members are moved toward the front end of the barrel to hook the string, and the holding members are moved toward the rear end of the barrel to hook the string to the stop member of the retention unit by operation of the link unit. When pulling the trigger, the stop plate moves downward to release the string to shoot the arrow.