Horizontally adjustable fixture attachment system

A horizontally adjustable fixture attachment system comprising:

• a main body panel defining a first plane having horizontal and vertical axes and including a first aperture extending through said panel, said first aperture having a horizontal width;
• a fixture for mounting on said main body panel and having a first tenon member extending from said fixture, said first tenon member having a shaft portion with a horizontal width narrower than the horizontal width of said first aperture by a distance defining the horizontal adjustment of said fixture attachment system, said shaft portion terminating in an enlarged head portion having a horizontal width intermediate between the horizontal width of said shaft portion and the horizontal width of said first aperture;
• a locking plate defining first and second substantially planar faces, said planar faces being oriented substantially parallel to one another and being disposed, in all operative configurations, in substantially parallel overlapping relation to said first plane, with said first planar face being directed toward said main body panel;
• said locking plate having a horizontally extending first lower slot portion dimensioned to permit the head portion of said first tenon member to pass through said first lower slot portion when said fixture and said locking plate are placed relative to each other in an unlocked configuration, in which configuration said main body panel is interposed between said fixture and said main body panel, said shaft portion of said first tenon member is within said first aperture and said first lower slot portion, and said head portion of the first tenon member has passed through said first aperture and said first lower slot portion to protrude beyond said second planar face of the locking plate;
• said locking plate having a first upper slot portion extending from a lower end coalescent with said first lower slot portion and terminating in an upper end, said first upper slot portion being horizontally dimensioned to receive the shaft portion of said first tenon member in horizontally close-fitting vertically sliding relation therewithin as said shaft portion moves from said first lower slot portion into said first upper slot portion corresponding to said locking plate being vertically moved relative to said fixture and to said body panel from said initial unlocked configuration to a locked configuration;
• said first upper slot portion being further horizontally dimensioned to preclude passage of said head portion of the first tenon member through said first upper slot portion, when said fixture, said main body panel and said locking plate are in said locked configuration;
• first latching means mounted on the second substantially planar face of said locking plate adjacent to said first upper slot portion for frictional engagement of said head portion of the first tenon member as said shaft portion vertically moves towards said upper end of said first upper slot portion corresponding to said locking plate being vertically moved relative to said fixture and to said main body panel from said unlocked configuration to said locked configuration, said frictional engagement holding said first tenon member in vertically unmovable relation adjacent said upper end of said slot portion to prevent reverse vertical movement of said shaft portion relative to said first upper slot portion, thereby to preclude movement of said fixture and said locking plate with respect to each other;
• and,
• a contact means having first and second cooperating portions mounted one on each of said locking plate and said main body panel to engage one another in horizontally fixed relation when said fixture and said locking plate are in said locked configuration, thereby to preclude horizontal movement of said locking plate and said fixture relative to said main body panel.