Door and board lifting device

A method of lifting a door or board, comprising the steps of:

• placing a horizontal edge of the door or board on one end of a lever having a fulcrum between the said one end and a second end;
• stepping on said second end to rotate the lever in a first sense to raise the door or board while manually supporting vertical side edges of the door or board;
• releasing pressure on said second end to cause a locking means automatically to engage the lever to secure it against rotation in a sense reverse to said first sense thereby maintaining the one end of the lever in a raised condition,
• the locking means incorporating a rod and a locking element that engages both with the rod and with the lever upon said release of pressure to secure the lever against rotation in said reverse sense at any point through the lever's movement,
• the rod being fixedly mounted in upstanding position on a base, the rod having a distal end remote from the base, and the locking element being urged towards said distal end by resilient biasing means when the lever is rotated in said first sense,
• the locking element defining a hole through which the rod may freely pass when the locking element is orthogonal to the rod, and
• sides of which hole being adapted frictionally to grip the rod when the locking element is misaligned to a predetermined extent from orthogonality with the rod.