Horizontally supported planar surfaces – Tiltable surfaces – Pivotally adjustable about horizontal axis
Patent
1977-01-28
1979-05-15
Zugel, Francis K.
Horizontally supported planar surfaces
Tiltable surfaces
Pivotally adjustable about horizontal axis
248451, A47B 2714
Patent
active
041541731
ABSTRACT:
Disclosed is a table-easel which supports a working surface in such a manner that it is readily movable in three directions, height, tilt, and rotation. The height adjustment is achieved by means of a pair of telescopically assembled uprights on a base and support frame which are raised and lowered by a double action turnscrew. The working surface is provided by a tabletop mounted on a cross shaft rotatably supported between the upper ends of the support frame, and tilt is achieved by rotating the cross shaft about its substantially horizontal axis. A locking structure is provided at one end of the cross shaft to lock the shaft in a particular tilt position. To permit rotation of the tabletop about a central axis normal to its surface, a pair of trunnion plates are provided. The tabletop is attached to one of the plates, and the other is attached to the cross shaft. The plates are normally movable with respect to each other but can be readily locked in a particular position so that the rotational position of the tabletop can be fixed. Adjustable clamps are provided to secure paintings or panels of different sizes and configurations on the tabletop even when it is near vertical position.
REFERENCES:
patent: 236845 (1881-01-01), Scheurich
patent: 543492 (1895-07-01), Laughlin et al.
patent: 1373473 (1921-04-01), Weydell
patent: 1376272 (1921-04-01), Handley
patent: 1529022 (1925-03-01), Fraser
patent: 1575897 (1926-03-01), Cole
patent: 3641946 (1972-02-01), Charnay
patent: 3813075 (1974-05-01), Capper
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