Bookrack

Claim 2

In combination with a chair having a seat and rigid frame bars extending across the underside of the seat at its front and rear, a removable bookrack comprising: laterally spaced generally parallel rods of springable rod stock, at least some of said rods having hooks at their rearward ends engaging the rear frame bar, said rods extending from the rear hooks downwardly and thence forwardly to form book-supporting body portions, and thence upwardly, at least some of said rods having hooks at their forward ends engaging the front frame bar, and at least one of said rods having locking means engaging one of said frame bars and cooperating with the hooks engaging said one frame bar for preventing said last-mentioned hooks from becoming disengaged and for positively preventing said bookrack from being accidentally disconnected from said frame bars due to application of a downwardly directed external load thereto.

Claim 3

The bookrack of claim 1 wherein alternate ones of said rods, at least at the forward or rearward ends thereof, terminate in said hooks, and at least one of the remaining rods have said locking means thereon.

Claim 4

The bookrack of claim 2 wherein said one of the remaining rods is bent to form a shoulder which in combination with at least one of said hooks forms mouth means into which said one of said front or rear frame bars snaps, past said shoulder, to position the bookrack on the frame bar, said shoulder being positioned over the center of said one frame bar, at least partially closing said mouth means, to self-lock the bookrack in position.

Claim 5

The bookrack of claim 1 wherein said locking means is resilient and in combination with said hooks forms mouth means into which one of said front or rear frame bars snaps, past said locking means, to position the bookrack on the frame bar.

Claim 6

The bookrack of claim 4 wherein said locking means is disposed over the center of said one frame bar, at least partially closing said mouth means, to self-lock the bookrack in position.

Claim 7

The bookrack of claim 1 wherein said locking means is formed integral with a rod which has one of said hooks formed thereon.

Claim 8

The bookrack of claim 6 wherein said locking meaNs is resilient and in combination with said one rod forms mouth means into which one of said front or rear frame bars snaps, past said locking means, to position the bookrack on the frame bar.

Claim 9

The bookrack of claim 7 wherein said locking means is disposed over the center of said one frame bar, at least partially closing said mouth means, to self-lock the bookrack in position.

Claim 10

The bookrack of claim 8 wherein said locking means comprises a resilient locking finger formed on the end of said one rod by bending the rod back upon itself whereby the finger faces the hook on the rod.

Claim 11

The bookrack of claim 1 wherein at least one of said rods has locking means engaging said front frame bar and at least one of said rods has locking means disengaged said rear frame bar to prevent the hooks from becoming engaged.

Claim 12

In combination with a chair having a seat and first and second rigid frame members adjacent the underside of the seat, a removable bookrack mounted on said frame members and suspended therebelow, said bookrack comprising a substantially U-shaped and upwardly opening assembly having a base portion for supporting articles thereon and having first and second suspension portions connected to opposite edges of said base portion and extending upwardly therefrom, said first suspension portion having first self-locking means adjacent the upper end thereof, said first self-locking means being disposed in partial surrounding relationship to said first frame member, said second suspension portion having second self-locking means adjacent the upper end thereof, said second self-locking means being disposed in partial surrounding relationship to said second frame member, said first and second self-locking means each engaging said frame members at locations extending circumferentially through an angle in excess of 180* and being disposed to open in substantially opposite horizontal directions.

Claim 13

In combination with a chair having a seat and first and second rigid frame members adjacent the underside of the seat, a removable bookrack mounted on said frame members and suspended therebelow, said bookrack comprising a substantially U-shaped and upwardly opening assembly having a base portion for supporting articles thereon and having first and second suspension portions connected to opposite edges of said base portion and extending upwardly therefrom, said first suspension portion having first self-locking means adjacent the upper end thereof, said first self-locking means being disposed in partial surrounding relationship to said first frame member, said second suspension portion having second self-locking means adjacent the upper end thereof, said second self-locking means being disposed in partial surrounding relationship to said second frame member, said first and second self-locking means each engaging said frame members at locations extending circumferentially through an angle in excess of 180* and being disposed to open in substantially opposite horizontal directions.

Claim 14

The combination according to claim 11, wherein said first self-locking means includes first hook means and separate lock means coacting with said first hook means, said lock means yieldably engaging said first frame member at a location spaced circumferentially from the first hook means to positively oppose accidental disconnection of said first hook means from said first frame member.

Claim 15

The combination according to claim 12, wherein said locking means contacts said first frame member at a location spaced from said first hook means longitudinally of said first frame member.

Claim 16

The combination according to claim 12, wherein said second self-locking means includes second hook means and second lock means coacting with said second hook means, said second lock means yieldably engaging said second frame member at a location spaced circumferentially from the second hook means.

Claim 17

The combination according to claim 12, wherein said lock means contacts said first frame member at a location which is substantially diametrically opposite the central part of said first hook means.

Claim 18

The combination according to claim 15, wherein said lock means contacts said first frame member at a location which is spaced longitudinally of said first frame member from the location where said first hook means contacts said first frame member.

Claim 19

The combination according to claim 14, wherein said suspension portions comprise plural, spaced and parallel rod means extending substantially vertically upwardly from said base portion, said hook means and said lock means being integral with the upper ends of alternate ones of said rod means.

Claim 20

The combination according to claim 15, wherein said lock means comprises a U-shaped projection integral with the free end of said first hook means, said projection being disposed in a plane substantially transverse to the plane of said first hook means.

Claim 21

In combination with a chair having a seat and first and second rigid frame members adjacent the underside of the seat, a removable bookrack mounted on said frame members and suspended therebelow, said bookrack comprising a substantially U-shaped and upwardly opening assembly having a substantially horizontal base portion for supporting articles thereon and first and second suspension portions connected to opposite edges of said base portion and extending substantially vertically upwardly therefrom, said first suspension portion including a first pair of elongated substantially parallel springable legs each having first hook means formed adjacent the upper free end thereof, said second suspension portion also including a pair of elongated substantially parallel springable legs each having second hook means formed adjacent the upper free end thereof, all of said legs extending primarily in the vertical direction and having a length greater than the width of said base portion as extending between said opposite edges, and said first and second hook means extending through an angle of at least approximately 180* and being disposed so as to open in substantially opposite horizontal directions.

Claim 22

In combination with a chair having a seat and first and second rigid frame members adjacent the underside of the seat, a removable bookrack mounted on said frame members and suspended therebelow, said bookrack comprising a substantially U-shaped and upwardly opening assembly having a substantially horizontal base portion for supporting articles thereon and first and second suspension portions connected to opposite edges of said base portion and extending substantially vertically upwardly therefrom, said first suspension portion including a first pair of elongated substantially parallel springable legs each having first hook means formed adjacent the upper free end thereof, said second suspension portion also including a pair of elongated substantially parallel springable legs each having second hook means formed adjacent the upper free end thereof, all of said legs extending primarily in the vertical direction and having a length greater than the width of said base portion as extending between said opposite edges, and said first and second hook means extending through an angle of at least approximately 180* and being disposed so as to open in substantially opposite horizontal directions.