Cutter having circular rotary blade

A cutter having a circular rotary blade comprising:

• (a) a handle;
• (b) a blade mounting section formed on one end of said handle;
• (c) a circular blade secured to one side of said blade mounting section and rotatably carried at its central portion;
• (d) a hole having an opening formed in the blade mounting section at a position behind the central portion of said circular blade and corresponding to said circular blade;
• (e) a pressing member movably received in said hole and projectable through the opening of the hole into pressure contact with one side of said circular blade;
• (f) an operation member adapted to limit the movement of said pressing member so as to adjust the pressure of contact between said pressing member and said circular blade, said operation member being held in engagement with said pressing member through cam means and positioned on the opposite side of said blade mounting section to said circular blade;
• (g) a protective member adapted to protect the user's finger and so forth from being injured by the edge of said circular blade when the cutter is not being used, said protective member being attached to said handle for movement along the length of said handle;
• and
• (h) a recess formed in a portion of said handle for receiving a base portion of said protective member slidably in the longitudinal direction of said handle, said recess being provided at its both sides with a pair of side walls and in the bottom thereof with a guide groove for guiding the base portion of said protective member, while said base portion of said protective member is provided at both sides thereof with a pair of leaf springs adapted to be pressed onto the side walls of said recess, said base portion of said protective member being further provided on the bottom surface thereof with a guide projection movable in the longitudinal direction of a guide groove of the recess and adapted to constitute the center of swinging motion of said protective member.