Adjustable book shelf

Details Adjustable book shelf Adjustable book shelf

1992-04-20

1993-07-20

Foss, J. Franklin

Supports: racks

Special article

Book support type

211175, 211184, A47B 6500

Patent

active

052285782

ABSTRACT:
An adjustable book shelf is equipped with a plurality of telescopic rod members adjustably disposed between a pair of side boards and a couple of length variable support sticks which are attached in parallel with the rod members to the side boards. A plurality of spring biased limiting arms are pivotably mounted to one of the rod members and are located contiguously side by side. Each limiting arm is spring biased and can be pivoted when pushed by an inserted book or books so that the same can be held in place by the next neighboring limiting arms which are in abutmenmt with the books, and when the book or books is taken away the pivoted limiting arm or arms will resume the original position. The number of limiting arms pivotably pushed away by the inserted book or books is approximately dependent of the thickness of the same.

REFERENCES:
patent: 945877 (1910-01-01), Updegraff
patent: 1266776 (1918-05-01), Dietzel
patent: 2504466 (1950-04-01), Stolzoff
patent: 2620929 (1952-12-01), Sportsman
patent: 3850303 (1974-11-01), Franklin

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