Swing-open convertible arm for sewing machine

摘要

A bed in a sewing machine having a fixed free arm and auxiliary bed plate means pivotally supported on the free arm between a retracted position to provide minimum girth around the free arm and an extended position which augments the work supporting area of the free arm. Releasable locking means maintain the auxiliary bed means in either of its positions and biasing means urges the auxiliary bed means from the retracted position towards the extended position.