Detachable tablet arm and bookrack

Claim 2

In a chair with detachable bookrack and tablet arm, said tablet arm including an arm platform and at least one supporting leg depending therefrom and passing beneath the seat of said chair, the improvement comprising: said leg having a leg tab secured thereto and projecting therefrom; said bookrack including a platform, a support projecting upwardly therefrom and a support tab projecting from said support; said chair including receiving means connected thereto and positioned beneath said seat, said receiving means defining a recess for matingly receiving both said leg tab and said support tab.

Claim 3

The chair of claim 1 comprising: said leg tab being positioned generally at a first side of said seat; said leg including securing means positioned beneath said seat generally at the second side thereof; said bookrack support including spaced first and second legs joined at the upper ends by a crosspiece; said crosspiece being broken intermediate said legs and including means for joining the two portions thereof; each crosspiece portion including one of said support tabs, said support tabs projecting in opposite directions away from the center of said crosspiece; said chair including one of said receiving means for each of said support tabs, each of said receiving means being positioned generally at opposite sides of said chair with said recesses opening towards one another; each of said receiving means being adapted to receive both a support tab and said leg tab and each of said receiving means including engaging means for matingly engaging said securing means on said leg whereby said tablet arm can be either a left-handed or a right-handed tablet arm; said bookrack being sufficiently resiliently flexible that said crosspiece portions can be separated and compressed inwardly towards one another to facilitate insertion of said support tabs into said receiving means.

Claim 4

The chair of claim 2 in which: said first and second legs of said bookrack are resiliently flexible.

Claim 5

The chair of claim 2 comprising: said first side of said seat being that side of said seat adjacent said arm platform.

Claim 6

The chair of claim 4 in which said receiving means comprises: a well depending downwardly from said seat, leaving a space between the bottom of said seat and said well.

Claim 7

The chair of claim 5 in which said tablet arm includes a second leg depending downwardly therefrom and passing beneath the seat of said chair; said second leg being positioned forwardly of the first leg; said second leg including a tab being secured thereto and projecting therefrom and said second leg including a securing mEans at its end; said chair including a pair of front downwardly depending wells, each generally at the front and one at each side of said chair for matingly receiving said tab and each including an engaging means for engaging said securing means.

Claim 8

The chair of claim 5 in which: each said support tab for said bookrack comprises: a side wall, a base and a tab, said side wall being secured to and projecting upwardly from said crosspiece portion, said base projecting generally laterally from said side wall and said tab projecting from said base; each said leg tab comprising a side wall, a base and a tab, said side wall being secured to said leg and projecting upwardly therefrom, said base projecting generally laterally from said side wall; each said side wall of each said leg tab and said support tab including a portion projecting therefrom in the same direction as its respective tab, but at a lower level, spaced therefrom; each said receiving means including a notch for receiving said side wall of said leg tab member and having a notch for receiving said side wall of said support tab member; said side walls resting in said respective notches, said tabs being positioned within said receiving means on the upper surface thereof and said projecting side wall portions being positioned below said receiving means.

Claim 9

The chair of claim 7 in which said chair seat is mounted on a pair of flanges, each of said flanges being secured to said chair generally at the side thereof; each of said wells being defined by a downward deformation in said flange.

Claim 10

The chair of claim 8 in which said platform and said chair include means cooperating to secure said platform to said chair, said cooperating means being disposed generally at the front of said chair and at the front of said platform.

Claim 11

The chair of claim 9 in which said means cooperating comprise: at least one hook on the front of said platform and a crossbrace extending between and joining the front legs of said chair.

Claim 12

The chair of claim 1 in which: said support tab for said bookrack comprises: a side wall, a base and a tab, said side wall being secured to and projecting upwardly from said support, said base projecting generally laterally from said side wall and said tab projecting from said base; said leg tab comprising a side wall, a base and a tab, said side wall being secured to said leg and projecting upwardly therefrom, said base projecting generally laterally from said side wall and said tab projecting from said base; each said side wall of each said leg tab and said support tab including a portion projecting therefrom in the same direction as its respective tab, but at a lower level, spaced therefrom; said receiving means including a notch for receiving said side wall of said leg tab member and having a notch for receiving said side wall of said support tab member; said side walls resting in said respective notches, said tabs being positioned within said receiving means on the upper surface thereof and said projecting side wall portions being positioned below said receiving means.

Claim 13

In a chair with detachable tablet arm, said tablet arm having an arm platform and at least one supporting leg depending downwardly therefrom and passing beneath the seat of said chair, the improvement comprising: said leg having a leg tab secured thereto and projecting therefrom; said chair including receiving means defining a recess beneath said seat for matingly receiving said leg tab to thereby support and locate said leg beneath said seat; said leg tab being positioned generally at a first side of said seat; said leg including securing means positioned beneath said seat and generally at the second side of said seat; said chair including engaging means positioned beneath said seat for matingly engaging said securing means.

Claim 14

In a chair with detachable tablet arm, said tablet arm having an arm platform and at least one supporting leg depending downwardly therefrom and passing beneath the seat of said chair, the improvement comprising: said leg having a leg tab secured thereto and projecting therefrom; said chair including receiving means defining a recess beneath said seat for matingly receiving said leg tab to thereby support and locate said leg beneath said seat; said leg tab being positioned generally at a first side of said seat; said leg including securing means positioned beneath said seat and generally at the second side of said seat; said chair including engaging means positioned beneath said seat for matingly engaging said securing means.

Claim 15

The chair of claim 12 comprising: said first side of said chair being that side of said chair which is adjacent said arm platform.

Claim 16

The chair of claim 13 comprising: said leg tab projectinG from said leg generally towards the side of said chair at which said tablet arm is located.

Claim 17

The chair of claim 14 in which said receiving means comprises: a well depending downwardly from said seat generally at said first side thereof.

Claim 18

The chair of claim 15 in which said leg tab comprises a side wall, a base and a tab, said side wall being secured to and projecting upwardly from said leg and said base projecting generally laterally from said side wall; said tab projecting outwardly from said base; said side wall including a portion projecting beyond the end of said base in the same direction as said tab, but being spaced from said tab at a level below that of said tab; said well including a notch therein for matingly embracing said side wall with said tab lying within said well on the upper surface thereof and said projecting side wall portion lying beneath said well on the underside thereof.

Claim 19

The chair of claim 16 in which said leg tab includes a second wall secured to said leg and projecting upwardly therefrom and then being joined to said base, said leg tab being generally U-shaped in configuration; said well including a second notch therein defining a tongue between said notches; said second side wall being matingly engaged by said second notch and said tab overlying said tongue.

Claim 20

The chair of claim 16 in which said engaging means comprises: a second well depending downwardly from said seat, generally at said second side thereof; said well having an aperture therein; said securing means comprising a bolt passing through the end of said leg and through said aperture; the space between said receiving well and seat being sufficiently large that a nut can be inserted therein; a nut being inserted in said well with said bolt being threaded in said nut.

Claim 21

The chair of claim 18 in which: said nut includes a hook on one side thereof for hooking over the edge of said receiving well to facilitate locating said nut with respect to said aperture and to prevent said nut from rotating when said bolt is threaded thereinto.

Claim 22

The chair of claim 18 in which: said second well and the first well are identical in structure whereby said tablet arm can either be a left-handed or a right-handed tablet arm.

Claim 23

The chair of claim 18 in which said chair seat is mounted on a pair of flanges, each of said flanges being secured to said chair generally at the side thereof; each of said wells being defined by a downward deformation in said flange.

Claim 24

The chair of claim 15 in which said tablet arm includes a second leg depending downwardly therefrom and passing beneath the seat of said chair; said second leg being positioned forwardly of the first leg; said second leg including a tab being secured thereto and projecting therefrom sand said second leg including a securing means at its end; said chair including a front downwardly depending well generally at the front and at each side of said chair for matingly receiving said tab and including an engaging means for engaging said securing means.

Claim 25

The chair of claim 15 in which said chair seat is mounted on a pair of flanges, each of said flanges being secured to said chair generally at the side thereof; each of said wells being defined by a downward deformation in said flange.

Claim 26

In a chair having a detachable bookrack and tablet arm, said tablet arm including a pair of legs depending downwardly therefrom and passing beneath said seat, said chair including a flange at either side thereof for supporting the chair seat, the improvement comprising: each of said legs including a tab projecting upwardly therefrom and towards said tablet arm; said tabs being positioned beneath said seat generally at the side adjacent said tablet arm; each of said flanges including a pair of deformations therein in a downward direction away from the bottom of said seat, said deformations defining receiving wells for receiving said tabs at either side of said seat whereby either a left-hand or right-hand tablet arm can be mOunted to said chair; each of said legs including securing means at the end thereof for securing to the receiving wells at the side of said chair away from said tablet arm; said bookrack including a platform and a pair of legs projecting upwardly generally from the rear thereof, said legs being joined by a cross-piece which is broken intermediate said legs; said crosspiece including means detachably joining the two portions thereof; cooperating means disposed generally at the front of said chair and said platform cooperating to secure said platform to said chair; each portion of said crosspiece including a tab projecting upwardly from said crosspiece and outwardly away from each other; one of said receiving wells on each of said flanges being generally at the rear of said seat and being sufficiently large to receive one of said crosspiece tabs and one of said leg tabs.

Claim 27

In a chair having a detachable bookrack and tablet arm, said tablet arm including a pair of legs depending downwardly therefrom and passing beneath said seat, said chair including a flange at either side thereof for supporting the chair seat, the improvement comprising: each of said legs including a tab projecting upwardly therefrom and towards said tablet arm; said tabs being positioned beneath said seat generally at the side adjacent said tablet arm; each of said flanges including a pair of deformations therein in a downward direction away from the bottom of said seat, said deformations defining receiving wells for receiving said tabs at either side of said seat whereby either a left-hand or right-hand tablet arm can be mOunted to said chair; each of said legs including securing means at the end thereof for securing to the receiving wells at the side of said chair away from said tablet arm; said bookrack including a platform and a pair of legs projecting upwardly generally from the rear thereof, said legs being joined by a cross-piece which is broken intermediate said legs; said crosspiece including means detachably joining the two portions thereof; cooperating means disposed generally at the front of said chair and said platform cooperating to secure said platform to said chair; each portion of said crosspiece including a tab projecting upwardly from said crosspiece and outwardly away from each other; one of said receiving wells on each of said flanges being generally at the rear of said seat and being sufficiently large to receive one of said crosspiece tabs and one of said leg tabs.