Supports: cabinet structure – Disappearing-instrument type
Patent
1978-07-05
1980-03-25
Sakran, Victor N.
Supports: cabinet structure
Disappearing-instrument type
312 22, 312 27, 312319, 1122171, A47B 8100, A47B 2900
Patent
active
041947991
ABSTRACT:
A mounting mechanism for a free arm sewing machine which is moveable selectively to an upper use position wherein the free arm is positioned above the work surface of the cabinet, a lower use position wherein the free arm is flush with the cabinet work surface, and a storage position wherein the entire machine is disposed below the work surface. The mechanism comprises a frame, a sewing machine support platform, and first and second pivot arms which are pivotally connected to the frame and the platform such that the platform is capable of limited rotating and swinging movement relative to the frame. The platform is latched in its upper use and lower use positions by means of a pair of spaced plates having forwardly and upwardly opening slots therein, which are adapted to releaseably retain and support either a pair of protruding pins on the platform or, in an alternative embodiment, one of the pivot arms which extends around the plates. One of either the frame or platform pivots is translatable within a slot so that the arm or platform, respectively, can move in and out of the latched position. The provision of a sliding pivot also avoids inoperative binding of the mechanism, which would otherwise occur as it moves from one position to another.
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patent: 2037479 (1936-04-01), Mossner
patent: 2712973 (1955-07-01), James
patent: 2790690 (1957-04-01), James
patent: 3264046 (1966-08-01), Preuss
patent: 3432039 (1969-03-01), Howitt
patent: 3986755 (1976-10-01), Kohara
patent: 4005918 (1977-02-01), Smith et al.
patent: 4089573 (1978-05-01), Aeschliman
Hoffman John F.
Jeffers Albert L.
Sakran Victor N.
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