Low friction cord lock

A cord lock comprising:

• A housing means containing a passage with a pair of substantially convex opposing walls joined by and completing said passage a pair of substantially flat and parallel walls;
• said passage having a most narrow point where said convex walls are of nearest relation to each other;
• a wedge means member formed by a pair of substantially flat and parallel opposite sides joined by a pair of opposite sloped sides spaced closer together at a narrow end of said wedge means and farther apart at a wide end of said wedge means;
• said wedge means positioned at least partially within said passage with said sloped sides each adjacent to one of said convex opposing walls whereby in combination with said housing is formed a set of two passages between said sloped sides and each adjacent said convex wall on opposite sides of said wedge means where a set of two cord parts can pass through said passage;
• said convex walls placed at a spacing whereby said wedge with said cord parts one on each side near said narrow end of said wedge means together can pass through said narrow point;
• said spacing further determined whereby said wedge with said cord parts one on each side near said wide end of said wedge means together cannot pass through said narrow point.