Chair with reclinable seat

Abstract

A seat which is mounted between two side frames, each having a horizontal member and vertical leg members, wherein the seat pivots about a transverse torsion bar extending within said seat width; a structural member extending alongside the torsion bar transferring the torsion bar forces to the frames horizontal members, the structural member having travel limiting means thereon to define the pivoting limits of the seat, the torsion bar being rigidly secured at its ends to the seat and rigidly secured at a point within its ends to the structural member.

What I claim is:  
     
         1 ) A chair having a reclinable seat comprising in combination two supporting side frames, each having at least one substantially horizontal member and substantially vertical leg members, said frames disposed in a spaced apart relationship by cross-rails; a plurality of travel limiting means placed within said side frames, and 
 a seat mounted within said side frames for pivoting about a transverse axis defined by resilient means extending within said seat, and    a structural member disposed alongside said resilient means and attached to said horizontal members; means placed onto the structural member to hold and guide said resilient means, and    means for securing in a nonrotatable relation said resilient means ends to said seat, adjustable means for locking in a desired nonrotatable relation said resilient means at a point intermediate its ends to said structural member, and    means positioned on said seat engaging said travel limiting means disposed within said side frames members further defining the position of maximum rearward pivoting of the seat and the position of maximum forward pivoting position of the seat, whereby said resilient means urge said seat toward its maximum forward position.    
     
     
         2 ) A chair having a reclinable seat comprising in combination two supporting side frames, each having at least one substantially horizontal member and substantially vertical leg members, said frames disposed in a spaced apart relationship by cross-rails, and 
 a seat mounted within said side frames for pivoting about a transverse axis defined by resilient means extending within said seat, and    a structural member disposed alongside said resilient means and attached to said horizontal members; means placed onto the structural member to hold and guide said resilient means; the structural member having a plurality of travel limiting means interacting with said seat thereon further defining the pivoting limits of the seat, and    means for securing in a nonrotatable relation said resilient means ends to said seat; adjustable means for locking in a desired nonrotatable relation said resilient means at a point intermediate its ends to said structural member,    whereby said resilient means urge said seat toward its maximum forward position.    
     
     
         3 ) A chair having a reclinable seat comprising in combination two supporting side frames each side frame having at least one substantially horizontal member and substantially vertical leg members, said frames disposed in a spaced apart relationship by cross-rails, and 
 a seat mounted between said side frames pivoting about a transverse torsion bar extending within said seat; a structural member extending alongside the torsion bar having means for transferring the torsion bar forces to said horizontal members, and    said structural member having a plurality of travel limiting means interacting with said seat thereto further defining the pivoting limits of the seat, and    means for securing in a nonrotatable relation the torsion bar ends to said seat, means for securing in an adjustable nonrotatable relation the torsion bar at a point intermediate its ends to said structural member,    whereby, said torsion bar supports and positions said seat.    
     
     
         4 ) In a chair as described in  claim 3 , whereby the means for securing in an adjustable nonrotatable relation the torsion bar to said structural member further including a pivotably anchor securely engaged to said torsion bar, and an adjustable screw engaging said structural member to a rotary joint connected thereto the anchor  
     
     
         5 ) In a chair as described in  claim 1  whereby, said means positioned on said seat engaging said travel limiting means disposed within said side frame members further comprising elastic stops means disposed within said seat and seat stop brackets disposed within said side frames.  
     
     
         6 ) In a chair as described on claims  1  and  2 , whereby the resilient means comprises a square cross section torsion bar.