Fig. 52.
Q. How can a weight be raised when the jack will not go under the weight?
A. By the use of a movable claw.
Q. Give some general instructions for the care and use of the jack.
A. Never fill with water, kerosene, or wood-alcohol. Keep the ram down when not in use. If the valve sticks on its seat, strike the lever a few sharp blows up and down, thus jarring the valve. Use the alcohol supplied by the Ord. Dept.
HORIZONTAL JACK