DISPOSITIVO PER ACCOPPIARE CINEMATICAMENTE UN GRUPPO LAPIDELLO SOSTITUIBILE AD UN PORTA-LAPIDELLO PRINCIPALE

A mounting assembly for an abrasive member comprising a support structure including a plate member 22 having opposite surfaces and at least one opening extending therethrough between the opposite surfaces, a stone assembly for mounting on the plate member including a backing member 24A having opposed surfaces one of which is to be placed adjacent to one of the opposite surfaces of the plate member, an abrasive member 28A mounted on the other opposed surface of the backing member, tubular members 56A corresponding in number to the number of openings in the plate member formed on the one opposed surface of the backing member at locations to register with and to be insertable into the corresponding openings in the plate member, and a member 62, such as a screw or base, for threading or otherwise forcing into each respective tubular members when positioned extending into corresponding ones of the spaced plate openings to expand their tubular members outwardly in the corresponding plate openings to make a tight engagement with the plate member.