Extendable book prop

Details Extendable book prop Extendable book prop

1987-07-15

1988-09-20

Britts, Ramon S.

Supports

Easel; book, copy or music score holder

Adjustable operative size

248461, 248456, 248172, 108102, A47B 9704

Patent

active

047719761

ABSTRACT:
A main plate having a bookstop on its lower end and having a cavity on its inside. The cavity slidably retains two slide plates which are extendable from its lateral sides and one top plate which is extendable from its top. The top plate itself also has two slide plates which are extendable from its lateral sides when the top plate and the slide plates are extended. A support rod is adjustable in a multiplicity of grooves on the base plate and also adjustable on the back of the main plate for allowing a wide range of reading angles and support stability.

REFERENCES:
patent: 1515058 (1924-11-01), Lindhe
patent: 1542495 (1925-06-01), Ebert
patent: 1554979 (1925-09-01), Dugan
patent: 1602338 (1926-10-01), Chittenden
patent: 2003746 (1935-06-01), Headington
patent: 2027928 (1936-01-01), Norwood
patent: 2489553 (1949-11-01), Wofford
patent: 2501019 (1950-03-01), Attick
patent: 4470571 (1984-09-01), Hartman
patent: 4555128 (1985-11-01), White et al.
patent: 4618119 (1986-10-01), Powell

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