Eliminate the vertical shore member and attach the Timber Jack directly to the horizontal 4x4 or 4x6 (as pictured below).
Caution: The acme screw of the Timber Jack will completely separate from the acme nut if screwed out too far. Do not extend the acme screw past the maximum adjustment of 5". This will insure that the threads of the acme nut will be used to support a heavy load.
Drill 1-3/8" x 6" (for TJ-4) or 1-3/4" x 6" (for TJ-6) hole using auger or self feed drill bit into center of lumber to accept 1-1/4" or 1-1/2" Acme threaded screw.
Position Timber Jack so the Acme screw will slide into the predrilled hole in lumber.
Adjust the top plate so all 4 mounting holes line up within the boundaries of the lumber.
Drill 4 - 5/32"x1" holes through the mounting holes in the top plate and into the lumber.
Insert 4 - 1/4"x1-1/2" lag screws through the mounting holes in the top plate into the predrilled holes in the lumber and tighten.
Attach Ellis Purlin Splicer to Beam or Joist where support is desired.
Slip 4x4 or 6x6 lumber attached to the Timber Jack into the square tubing of the purlin splicer and secure with nails through the holes provided.
Adjustment to Timber Jack can be made by turning "U" shaped handle at bottom of screw. Acme threads are greased for easy adjustment.
Attach base plate to a solid foundation through the 4 holes provided.