Sears, Roebuck & Company

Richard D Meharg

John C Gall

Buckley A Singletary

A lift device for a sewing machine head of the type having a free arm to alternately provide flat bed, free arm and storage positions in a cabinet having a tabletop with a cutout for the sewing machine head and a pivoting lift mechanism disposed beneath the cutout. The lift device includes a base plate for the sewing machine head secured to the pivoting lift mechanism to permit movement of the sewing machine head between the flat bed, free arm and storage positions. The lift mechanism includes a pair of primary links having first ends pivotally secured to the underside of the tabletop adjacent and on opposite sides of the cutout and a pair of secondary links having first ends pivotally secured at opposite sides of the base plate remote from the points at which the primary links are secured to the tabletop with the second ends of the primary links being pivotally secured to the second ends of the secondary links. The lift device also includes structure in the form of members which engage and disengage in response to movement of the lift mechanism for supporting the sewing machine head in each of the flat bed, free arm and storage positions. By limiting relative pivotal movement between the primary links and the secondary links and between the secondary links and the base plate, the lift device is capable of shifting the center of gravity of the sewing machine head toward the pivot point during movement between the flat bed, free arm and storage positions.

Sewing machine head lift device

An apparatus for operating a line driven device such as a traverse rod. The apparatus includes a frame member adapted to be mounted on or near the device, a reaction arm mounted on the frame member for pivotal movement, a motor mounted on the reaction arm and having an output shaft with a drive member, the reaction arm being adapted for pivotal movement about the output shaft, and a tensioning member disposed in spaced relation to the drive member. With this arrangement, the tensioning member can engage a line to maintain the line in tension in response to pivotal movement of the reaction arm.

Apparatus for operating a line driven device

A foldable wheelchair having shiftable driving wheels so arranged, that as the side frame members are folded to reduce the width of the chair, the wheels are controllably and automatically shifted to reduce the depth of the chair thereby effecting a reduction in the side area required to accommodate the chair.

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Winfield, IL, United States of America

Richard D Meharg