Foundation slab support and lifting apparatus

Apparatus for stabilizing and supporting building foundation slabs comprising:

• a slab support bracket comprising an elongated slab support plate adapted for insertion through an access opening in a building foundation slab so as to extend horizontally under the slab in engagement therewith, guide means extending through said slab support plate in a direction generally perpendicular thereto for receiving and guiding slab support pilings to be driven into the ground, and lift attachment means on opposite sides of said support plate, said lift attachment means comprising a pair of laterally extending arm segments projecting generally perpendicular to the longitudinal direction of extent of said slab support plate and being attached to said support bracket substantially centrally of said plate, said arm segments being apertured on opposite sides of said slab support plate;
• a pair of lift rods removably attached to said apertured arm segments and projecting upwardly from said slab support plate through the access opening when said bracket is positioned under a foundation slab in its normal position of use;
• cross arm means extending laterally in a direction generally perpendicular to the longitudinal direction of extent of said slab support plate at a vertically spaced position above said slab support plate, and said lift rods having upper ends attached to said cross arm means at laterally spaced locations thereon;
• power cylinder means connected to said cross arm means in a vertical orientation of use at a laterally offset position with respect to the vertical path of support pilings to be driven into the ground under the slab;
• and
• clamp means connected to said hydraulic cylinder means for vertical movement therewith and constructed and arranged to engage a length of slab support piling to be driven through said guide means by said hydraulic cylinder means.