The present licence for usefullness model is represented from a device of estate, applicable to the picture portalame of blots some apt to saw blocks of lapidei materials, device in a position to guaranteeing also in the time the push of necessary estate for the block of the picture portalame to respective oscillating means of support. Substantially said dispositive of estate it comprises frames (7) for the control of precaricati elastic organs of push (8), which motivatings force to elevated push ability, actions to maintain in pressure estate steles (9) you mail in correspondence of the picture portalame. The saying head (10) estate steles (9) is constituted from the piston of a system of hydraulic movement, in which the cylinder it is represented from the same frame (7) of control of the elastic organs of push (8), and the movement system previews the participation of a hydraulic operating circuit, that it concurs to withdraw the stelo of the piston.