Furniture structure with arch stiffeners exerting thrust on the joints

A chair assembly, comprising:

• a first and a second front leg, each of said front legs being formed with a respective outer and inner faces;
• a first and a second rear leg, each of said rear legs having a respective inner and outer faces, said first front leg and said second rear leg forming a first pair of diagonally spaced legs and said second front leg and the first rear leg forming a second pair of diagonally spaced legs, at least one of said first and second pairs of diagonally spaced legs being formed with a respective support on each of said inner faces of the respective front and rear legs forming said one pair, each of said supports being provided with a wedge-shaped portion inclined toward the respective inner face of the respective leg;
• a plurality of side members operatively connected with one another and forming a peripheral frame of the chair assembly abutting respective outer faces of each of said front and rear legs;
• at least one arch bridging said one pair of diagonally spaced legs having the supports on the respective inner faces, said arch being formed with oppositely inclined ends juxtaposed with the respective inclined portion of each of said supports and being provided with a respective longitudinal concave inner edge, said inclined ends and inclined portions of the supports being complementary inclined;
• a seat member on said supports;
• and
• means for connecting said seat member with said arch, so that said inclined ends slide against respective inclined portions of said supports toward the inner faces of said one pair of diagonally spaced legs upon the movement of said arch toward said seat.

A chair assembly, comprising:

• a pair of front legs, each of said front legs having a lower end thereof, said front legs being formed with a respective outer and inner longitudinal opposite faces;
• a pair of rear legs, each of said rear legs having a respective lower end and being provided with respective inner and outer longitudinal faces of the respective one of said rear legs;
• a respective support juxtaposed with each of said legs, said support having an inner and an outer sides, said outer side of the respective support being operatively connected with said inner face of each one of said front and rear legs and said support inner side having a wedge-shaped formation thereon formed with two slopes diverging toward the respective inner face of each of said legs;
• a plurality of side members operatively connected with one another and forming a peripheral frame of the chair assembly abutting respective outer faces of each of said front and rear legs at a distance from the lower ends of said legs;
• a first pair of spaced apart longitudinal arches bridging a first pair of diagonally spaced front and rear legs, each of said arches of said first pair being formed with opposite inwardly inclined ends juxtaposed with the respective inclined slopes of the respective support and being provided with a respective longitudinal inner edge, said longitudinal inner edges of the first pair of said arches being concave and facing each other;
• a second pair of spaced apart arches formed with respective longitudinal concave inner edges bridging the other diagonally spaced front and rear legs, each of said arches of the second pair of the arches being provided with opposite inclined ends, said slopes of each of said inner supports receiving the opposite ends of the respective pair of said arches, so that each of said inclined ends slides against the respective slope of each of said supports;
• and
• means interconnecting said pairs of said arches therebetween for sliding each of said inclined ends of said arches against the respective slopes of each of said supports upon bringing said arches toward one another.