| 摘要 |
A wall mounted clamp has two vertical jaws extending perpendicularly away from the wall. One jaw is fixed, and the other jaw is movable. The jaws are spring loaded against each other. The jaws can be opened by depressing a floor mounted pedal; releasing the pedal causes the jaws to come together again. A horizontal rod rotatable about its axis is vertically slidable in a vertical slot adjacent the pedal. The rod extends at right angles to the wall. A weight normally holds the rod in lowest position ready for use. |
