Convertible open-arm sewing machine

An assembly comprising a cabinet and a sewing machine, said cabinet including a cabinet panel having an upper horizontal surface and a cut-out for reception of said machine, said sewing machine including as components a frame and a pivot base, said frame having a vertical standard, a horizontal upper arm extending from the standard, a sewing head at the free end of the upper arm, a lower cantilevered arm freely extending from a supported end thereof adjacent the standard and generally parallel to the upper arm, means for pivoting the pivot base on the cabinet about a first horizontal axis parallel to said lower arm, said pivot base including a means for pivotally supporting the machine frame about a second axis spaced from and parallel to said first axis, said pivot base and said cabinet panel being arranged to support said machine frame at two vertically spaced operational positions corresponding to a free arm or first position wherein said lower arm is elevated with respect to said horizontal cabinet surface and a flat bed or second position wherein an upper face of said lower arm is generally coplanar with said horizontal cabinet surface, said pivot base extending generally along a longitudinal side of said frame, a generally planar surface carried by said pivot base, said planar surface being disposed relative to said pivot base and said frame such that it is generally coplanar with the upper surface of said lower arm when said frame is in said second position whereby said planar surface forms an auxiliary work supporting surface, said planar surface being responsive to relative movement between said pivot base and said frame whereby said planar surface is displaced from said lower arm when said frame is in said first position.