Concrete slab making machine

Claim 1

A CONCRETE SLAB MAKING MACHINE COMPRISING IN COMBINATION: (A) A MAIN SUPPORT FIXED TO A FLOOR SURFACE, (B) A FRAME VERTICALLY MOVABLE ON SAID MAIN SUPPORT RELATIVE TO SAID FLOOR SURFACE, (C) RELEASABLY LOCKING MEANS ON SAUD FRAME FOR LOCKING SAID FRAME AGAINST VERTICAL MOVEMENT ON SAID MAIN SUPPORT, (D) A PALLET CART SUPPORTED ON SAID FLOOR SURFACE, (E) A PALLET CARRIED ON SAID CART, (F) A MOLD BOX FIXED ON SAID FRAME ADAPTED TO RECEIVE SAID PALLET, (G) DECK PLATES FIXED ON SAID FRAME AND LOCATED AT OPPOSITE ENDS OF SAID MOLD BOX, (H) A FEED DREWER SUPPORTED ON SAID DECK PLATES AND SAID MOLD BOX ADAPTED TO MOVE BACK AND FORTH ACROSS THE TOP OF SAID MOLD BOX FROM DECK PLATE TO DECK PLATE, (I) POWER MEANS ON SAID FRAME FOR ACTUATING SAID FEED DRAWER IN SAID BACK AND FORTH MOVEMENTS, (J) A PRESSURE PLATE MOUNTED FOR VERTICAL RELATIVE MOVEMENT ON SAID FRAME INTO AND OUT OF SAID MOLD BOX, (K) POWER MEANS INTERCONNECTED BETWEEN SAID FRAME AND SAID PRESSURE PLATE ADAPTED TO RELATIVELY VERTICALLY RECIPROCATE SAID PRESSURE PLATE AND SAID FRAME, (L) STOP MEANS ON SAID PRESSURE PLATE ADAPTED TO ENGAGE SAID FRAME TO LIMIT UPWARD RELATIVE TRAVEL OF SAID FRAME RELATIVE TO SAID PRESSURE PLATE, (M) MEANS ACTUATED BY RESTRAINING THE DOWNWARD MOVEMENT OF SAID PRESSURE PLATE TO RELEASE SAID LOCKING MEANS TO CAUSE UPWARD MOVEMENT OF SAID FRAME RELATIVE TO SAID PRESSURE PLATE..