Patent ID: 8469420
Filing Date: 2013-06-25
Classification: B66C,Y10T

Abstract:
1. An engagement assembly for mounting to a first head block so as to engage a second head block, said assembly comprising: at least one mounting bracket for mounting the assembly to the first head block; a plurality of extendable members each connected at a first end to the at least one mounting bracket, a second opposed end of each extendable member being extendable away from said first head block; a plurality of engagement portions in communication with the second ends such that extension of the second ends consequently extends the engagement portions, said engagement portions adapted to engage engagement brackets mounted to the second head block; a lateral engagement member connected to each of the second ends such that extension of the second ends consequently extends the lateral engagement member, said engagement portions mounted to the lateral engagement member; said lateral engagement member adapted to extend the engagement portions in opposed directions along an axis parallel to a longitudinal axis of the first head block, and further adapted to retract the engagement portions along the same axis in order to engage engagement brackets of the second head block, wherein on engagement the engagement assembly permits selective relative movement in the horizontal plane and free relative vertical movement.