Rotable drafting table having rectangular configured drafting su

Details Rotable drafting table having rectangular configured drafting su Rotable drafting table having rectangular configured drafting su

1988-06-20

1990-03-06

Dorner, Kenneth J.

Horizontally supported planar surfaces

Plural related horizontal surfaces

Horizontally adjustable

108139, 33435, A47B 1100

Patent

active

049056107

ABSTRACT:
A rotatable drafting table includes a flat base board; a top drafting board position on top of the flat base board, the drafting board having a substantially rectangular configuration with slightly rounded corners; a swivel arrangement secured to the base board and drafting board for rotatably securing the drafting board on the base board; the base board having slide extensions at two front corners thereof; four pins provided at the free ends of the slide extensions and the opposite two corners of the base boards; a wire secured around the four pins; a parallel slide slideably mounted on the wire and positioned above the drafting board; and a braking assembly including at least one rubber brake pad secured at an underside of the drafting board for movement into braking contact with the upper surface of the base board.

REFERENCES:
patent: 389472 (1888-09-01), Hopkins
patent: 397147 (1889-02-01), Sperry
patent: 575842 (1897-01-01), Laughlin et al.
patent: 836919 (1906-11-01), Burbank et al.
patent: 1127139 (1915-02-01), West
patent: 1164253 (1915-12-01), Borntraeger
patent: 2713723 (1955-07-01), Anderson
patent: 2728957 (1956-01-01), Keller
patent: 3345751 (1967-10-01), Barzee et al.
patent: 4779543 (1988-10-01), Kelley

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