Multiple saw blade adjustable dado cutter assembly including a cam assembly and nestable dado blades

A cooperating cam assembly for sequentially spacing items, the cam assembly comprising:

• a. a left cam, said left cam having a left face and a right face, said right face having a center point, said left cam having an axis line, said axis line passing through said center point and being transverse to said right face, said right face having two semicircular-shaped cam segments, said two semicircular-shaped cam segments being concentric about said center point, each of said cam segments having a low point and a high point with a linear rise from said low point to said high point, said low point of one of said two semicircular-shaped cam segments abutting said high point of the other of said two semicircular-shaped cam segments, said two semicircular-shaped cam segments being an identical transverse distance from said right face on any line connecting said two semicircular-shaped cam segments and passing through said axis, each of said two semicircular-shaped cam segments having a pin extending therefrom, said pins being on a line connecting said pins and passing through said axis, said pins being parallel to said axis and equidistant a first distance therefrom;
• b. a center cam, said center cam having a left face and a right face, said left face having a center point, said right face having a center point, said center cam having an axis line, said axis line passing through said left face center point and said right face center point, said axis line being transverse to said left face and said right face;
• said left face having two semicircular-shaped cam segments, said two semicircular-shaped cam segments being concentric about said left face center point, each of said cam segments having a low point and a high point with a linear rise from said low point to said high point, said low point of one of said two semicircular-shaped cam segments abutting said high point of the other of said two semicircular-shaped cam segments, said two semicircular-shaped cam segments being an identical transverse distance from said left face on any line connecting said two semicircular-shaped cam segments and passing through said axis, each of said two semicircular-shaped cam segments having a groove extending partway thereround, said grooves being said first distance from said axis;
• said right face having two semicircular-shaped cam segments, said two semicircular-shaped cam segments being concentric about said right face center point, each of said cam segments having a low point and a high point with a linear rise from said low point to said high point, said low point of one of said two semicircular-shaped cam segments abutting said high point of the other of said two semicircular-shaped cam segments, said two semicircular-shaped cam segments being an identical transverse distance from said right face on any line connecting said two semicircular-shaped cam segments and passing through said axis, each of said two semicircular-shaped cam segments having a groove extending partway thereround, said grooves being said first distance from said axis;
• c. a right cam, said right cam having a left face and a right face, said right face having means to adjust said cam assembly, said left face having a center point, said right cam having an axis line, said axis line passing through said center point and being transverse to said left face, said left face having two semicircular-shaped cam segments, said two semicircular-shaped cam segments being concentric about said center point, each of said cam segments having a low point and a high point with a linear rise from said low point to said high point, said low point of one of said two semicircular-shaped cam segments abutting said high point of the other of said two semicircular-shaped cam segments, said two semicircular-shaped cam segments being an identical transverse distance from said left face on any line connecting said two semicircular-shaped cam segments and passing through said axis, each of said two semicircular-shaped cam segments having a pin extending therefrom, said pins being on a line connecting said pins and passing through said axis, said pins being parallel to said axis and equidistant said first distance therefrom;
• where said left cam right face semicircular-shaped cam segments abut said center cam left face semicircular-shaped cam segments with said pins in said left cam right face semicircular-shaped cam segments fit into said grooves in said center cam left face semicircular-shaped cam segments;
• where said right cam left face semicircular-shaped cam segments abut said center cam right face semicircular-shaped cam segments with said pins in said right cam left face semicircular-shaped cam segments fit into said grooves in said center cam right face semicircular-shaped cam segments;
• said left cam right face, said center cam left face, said center cam right face, and said right cam left face being in a parallel alignment;
• said left cam axis line, said center cam axis line, and said right cam axis line being coincident;
• and, whereby, to sequentially adjust said cam assembly, said means to adjust said cam assembly is rotated causing said right cam right face to move in a direction away from said center cam and said left cam until said pins in said right cam left face semicircular-shaped cam segments in said grooves in said center cam right face semicircular-shaped cam segments hit a first limit point, at which time, continued rotation of said means to adjust said cam assembly causes said right cam right face and said center cam left face and said center cam right face to move in a direction away from said left cam until said pins in said left cam right face semicircular-shaped cam segments in said grooves in said center cam left face semicircular-shaped cam segments hit a second limit point, at which time, continued rotation of said means to adjust said cam assembly causes said left cam, said center cam, and said right cam to move together.