Machine vise

A machine vise for grasping a work blank by a stationary jaw and a movable jaw adapted to move straight toward and away from the stationary jaw, which machine vise comprises:

• a vise bed possessing a cavity therein throughout the entire length thereof,
• a pair of rails formed on the longitudinal upper edges of the vise bed,
• a stationary jaw provided with a jaw plate and fixed in position on one end of the vise bed,
• a movable jaw provided on the front surface thereof with a jaw plate which is in parallel with said jaw plate of said stationary jaw and provided with guides adapted for intimate engagement with said pair of rails and mounted on said vise bed freely movably toward and away from said stationary jaw,
• an L-shaped frame separately disposed throughout in the longitudinal direction of said cavity in said vise bed and possessing one end fastened inwardly to said stationary jaw,
• driving means supported in position on the other end of said L-shaped frame and adapted to impart forward or backward movement to said movable jaw,
• vertical shafts disposed on the jaw plate side of said movable jaw and retained in position by bolts planted in said guides, and
• means disposed inside said movable jaw and adapted to transmit the driving force issuing from said driving means to said movable jaw, with one end of said means connected to said driving means and the other end thereof to said vertical shafts.