Installation for polishing pieces of cutlery

An installation for polishing pieces of cutlery in a circular path through a plurality of work stations comprising:

• first and second rotatable conveyors, each of said conveyors capable of moving through a circular path for the transportation of pieces of cutlery, each of said conveyors including a rotatable turret capable of being driven intermittently about a vertical axis of rotation;
• a plurality of equi-angularly spaced pivoting arms connected to each of said rotatable turrets, each of said pivoting arms including an inner arm section having one end articulated about a horizontal axis of said rotatable turret and capable of being driven radially outwardly about said horizontal axis, and an outer arm section articulated to the other end of said inner arm section and extending radially outwardly of said inner arm;
• a workpiece holder connected to the free end of each of said outer arm sections;
• swivelling means movble between a first position and a second position, said swivelling means being coupled to said inner and said outer arms for swivelling said arms and associated said holders and for holding said inner arm section in a substantially vertical position and for holding said outer arm section in a substantially horizontal position when said swivelling means is in said first position and for holding said inner and said outer arm sections in a radially extended position when said swivelling means is in said second position;
• and
• a stop means between said inner arm section and said outer arm section for maintaining a minimum angle between said inner arm section and said outer arm section.