Saw tooth

A saw tooth having:

• a rectangular top surface and a rectangular bottom surface, the top and bottom surfaces parallel;
• side surfaces;
• and front and back surfaces;
• the front surface extending between the top and bottom surfaces and extending inwardly from the top and bottom surfaces toward the back surface to provide an inwardly dished front surface;
• the front surface forming, with its connection to the top and bottom surfaces, front, top and bottom cutting edges;
• the back surface extending between the top and bottom surfaces and extending inwardly from the top and bottom surfaces toward the front surface to provide an inwardly dished back surface;
• the back surface forming, with its connection to the top and bottom surfaces, back, top and bottom cutting edges;
• the front, top and bottom cutting edges parallel to each other;
• the back top and bottom cutting edges parallel to each other, and the front cutting edges parallel to the back cutting edges, and
• a mounting opening extending between the front and back surfaces, the opening located midway between the top and bottom surfaces, midway between the side surfaces, and transverse to the cutting edges.

A saw tooth assembly having:

• a saw tooth, the saw tooth having:
• a rectangular top surface and a rectangular bottom surface, the top and bottom surfaces parallel;
• side surfaces;
• and front and back surfaces;
• the front surface extending between the top and bottom surfaces and extending inwardly from its connection to the top and bottom surfaces toward the back surface to provide an inwardly dished front surface;
• the front surface forming, with its connection to the top and bottom surfaces, front, top and bottom cutting edges;
• the back surface extending between the top and bottom surfaces and extending inwardly from its connection to the top and bottom surfaces toward the front surface to provide an inwardly dished back surface;
• the back surface forming with its connection to the top and bottom surfaces back, top and bottom cutting edges;
• the front, top and bottom cutting edges parallel to each other;
• the back top and bottom cutting edges parallel to each other, and the front cutting edges parallel to the back cutting edges;
• the front and back surfaces of the saw tooth each having a mounting surface section to be able to locate any one of the four cutting edges in cutting position when the saw tooth is detachably mounted on a mounting block, each mounting surface section centrally positioned between the top and bottom surfaces;
• a mounting block;
• mounting means on the mounting block for use in mounting the block on the rim of a circular saw blade;
• a mounting surface on the mounting block;
• and a bolt detachably connecting the tooth to the block with the mounting surface on the block abutting one of the mounting surface sections on the front and back surfaces of the tooth.

A saw tooth of generally square parallelepiped shape having parallel top and bottom surfaces;

• parallel side surfaces;
• and front and back surfaces, the front and back surfaces having end sections adjacent the top and bottom surfaces;
• at least two end sections of the front and back surfaces extending inwardly, from the connection of each end section with its associated top or bottom surfaces, toward the other of the front and back surfaces;
• each end section defining a cutting edge with its connection with one of the top and bottom surfaces;
• the cutting edges parallel to each other;
• and a central mounting hole extending between the front and back surfaces, the hole transverse to the cutting edges.