Feed adjusting device for sewing machines
AssigneeRockwell-Rimoldi S.p.A.
InventorNerino Marforio
Life of this patent
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Abstract
An improved feed adjusting apparatus for sewing machines having a control device which reduces to a minimum the displacement between the actual path and the optimum path of travel of a slider during its intended function of transforming the oscillating movement of the feed advance shaft to reciprocating movement of the bar that supports the machine's feed dogs.
Claims3
A feed adjusting device for sewing machines in which the feed dog bar is actuated by a drive link interconnecting it with a slider movably mounted on a guide bar having an arm oscillatably driven by the machine's feed advance shaft, said feed adjusting device comprising:
- a. a forked slider (17) operatively connected to the slider;
- b. a control means (18) connected to said forked slider (17) for effecting movement of the slider on the guide bar during movement thereof by the feed advance shaft;
- and
- c. support means (22, 33) attached to said forked slider for positioning the latter so as to maintain the axis (30) thereof substantially coincident with the path of travel of the slider.
Dependencies are inferred from the claim text.