Supports – With indicator or inspection means
Patent
1978-06-16
1982-01-26
Schultz, William H.
Supports
With indicator or inspection means
248441R, A47B 1900
Patent
active
043124909
ABSTRACT:
A pair of extension members especially adapted to be slidably affixed to the book support member of a music stand of conventional construction. The extension panels comprise a back support panel and a lower support flange generally perpendicular thereto upon which may be supported sheet music. Each extension panel has provided thereon a plurality of retaining members, each defining a retaining groove which slidably engage the music stand. There is an upper retaining member defining an upper retaining groove which engages the upper horizontal edge portion of the back panel of a music stand, a first lower retaining member defining a first lower retaining groove which engages the support flange of a music stand, and a second lower retaining member defining a second lower retaining groove which engages the lower horizontal edge portion of the back panel of a music stand. There is an indicating means to indicate full extension of the extension panels. In a second embodiment, a pair of extension members adapted to be affixed to a folding music stand, the members have an "L" shaped cross-sectional configuration with a generally horizontally aligned portion and a generally vertically aligned portion affixed thereto. Each member has a pivot end and a swing end, the member pivoting about the pivot end from a non-extended to an extended operative position.
REFERENCES:
patent: 575729 (1897-01-01), Palmer
patent: 1037233 (1912-09-01), Furrow
patent: 1515058 (1924-11-01), Lindhe
patent: 1542495 (1925-06-01), Ebert
patent: 1651471 (1927-12-01), Sawyer
patent: 1818717 (1931-08-01), Kliegl
patent: 1959843 (1934-05-01), Sprague
patent: 2538318 (1951-01-01), Mitchell
patent: 2685372 (1954-08-01), Palaith
patent: 3021637 (1962-02-01), Huffman
patent: 4037815 (1977-07-01), De Lano
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