Adjustable bookrack

Details Adjustable bookrack Adjustable bookrack

1986-03-27

1987-07-28

Machado, Reinaldo P.

Supports: racks

Special article

Book support type

2482972, A47B 6500

Patent

active

046826963

ABSTRACT:
An adjustable bookrack includes a base with a guideway provided in an upper surface thereof, the guideway having a first frictional surface; a stationary upright end wall mounted securely at one end of base; a movable upright end wall disposed detachably on the guideway; a gliding member secured to the underside of the moveable upright end wall and slidable on the guideway; a braking member releasably disposed under the gliding member and having a second frictional surface opposing the first frictional surface; and means for biasing the braking member toward the gliding member so as to impel the second frictional surface against the first frictional surface, including an actuator member. Thereby, when the actuator member is pushed, the braking member is released from the guideway so as to adjust the space between the stationary and movable upright end wall.

REFERENCES:
patent: 525186 (1894-08-01), Bowley
patent: 670446 (1901-03-01), Fletcher et al.
patent: 1237101 (1917-08-01), Ryan
patent: 2140656 (1938-12-01), Smith
patent: 2222190 (1940-11-01), Wolf
patent: 2940718 (1960-06-01), Beal
patent: 3048851 (1962-08-01), Bickford
patent: 4278224 (1981-07-01), Arakawa

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