Noise suppression structure for block making machinery

In a concrete block making machinery of the kind having a frame, a vibratable, open bottom mold supported on and in contact with said frame, a pallet support beneath said mold, a pallet carried thereon, motion transmission means coupled to said pallet support for raising the latter toward said mold a distance sufficient to seat a pallet against the bottom of said mold and to raise said mold to a position spaced from said frame, and vibration causing means coupled to said mold, the improvement comprising:

• first elastic yieldable means incorporated between said pallet and motion transmission means to isolate the vibration causing means, mold and pallet therefrom when the mold is vibrated;
• second elastic yieldable means interacting between said mold and frame to yieldingly oppose raising movement of said mold and to isolate the mold and vibration causing means from the frame when the mold is in raised position, but enabling movement of said mold to its raised position off the frame;
• and
• drive means operable to control said motion transmission means to raise the mold and permit the second elastic yieldable means to aid in returning said mold to engagement with said frame.