| 摘要 |
<p>: A novel adaptor for sewing machines is described which permits a fabric or garment to be fed past the stitch forming area in a choice of two perpendicular directions. The novel combination comprises feed dog means; support plate means for said feed dog means; a first connector arm means for producing horizontal backward and forward reciprocating movements of the feed dog and support plate; a second connector arm means for producing a horizontal sideways reciprocating movements of the feed dog and support plate; a rocker rod assembly mounted below said feed dog and support plate, including a pair of axially aligned rocker rods, one of said rocker rods being a powered rod and the other being a driven rod, said driven rod being operatively connected to said first connector arm and said powered rod being operatively connected to said second connector arm by way of a freely rotatable sleeve mounted on said powered rod; a clutch mechanism including a slideable member adapted in one position to operatively connect the two rocker rods thereby producing backward and forward reciprocating movements of the feed dog and in a second position to disconnect the two rocker rods and to operatively connect said freely rotatable sleeve to said powered rod thereby producing sideways reciprocating movements of the feed dog.</p> |
