Abstract: There is disclosed lift fork construction including a hook portion at one end of the fork body which includes resiliently controlled latch instrumentalities arranged to be raised and lowered into and out of engagement with notches formed in a support member carried by a lift truck, rotation of a T-shaped member included in the said instrumentalities to an angle to extend across a notch, preventing engagement therewith, means being provided to manipulate said member to move the same into position coinciding with a notch and thereby enter the same to lock the fork in position on the support member aforesaid.