Material hold-down
AssigneeWolverine World Wide, Inc.
InventorGerhard P. Kaempfer
Life of this patent
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Abstract
A material hold-down device, cooperative with the stitching needle bar of a stitching machine, and employing a template that retains layers of material to be stitched. The hold-down has a vertical tubular cylindrical sleeve in sliding bearing relationship with the reciprocal cylindrical needle bar, a laterally projecting mounting portion extending therefrom, and an elongated lower hollow nose coaxial with the sleeve, of smaller diameter than the sleeve, and joined thereto by a frustoconical juncture. The sleeve has an open side of less than 180.degree. extent, leaving the remaining wall portion greater than 180.degree., and has a smaller opening opposite the open side, for access to the needle and needle bar.
Claims3
A material hold-down device for a stitching machine having a reciprocal needle retained in a reciprocal needle bar by a turn screw comprising:
- a tubular cylindrical bearing sleeve to slidingly receive the needle bar, said sleeve having a chordal side opening for partial exposure of the needle bar and reciprocation of the turn screw relative to said sleeve, said opening being less than 180.degree. extent leaving a portion of greater than 180.degree. extent;
- a mounting portion extending laterally from said sleeve to mount said device to the stitching machine for reciprocation of the needle bar in said bearing sleeve;
- an elongated hollow nose coaxial with said sleeve to receive the reciprocal needle, joined to said sleeve by a frustoconical juncture, and having a material follower surface on the end thereof.
A material hold-down device in combination with a stitching machine having a reciprocal cylindrical needle bar and needle comprising:
- a tubular cylindrical bearing sleeve to slidingly receive said needle bar, said sleeve having an open side of less than 180.degree. extent;
- a mounting portion extending laterally from said sleeve to mount said device to the stitching machine;
- said sleeve slidably receiving said needle bar, and said needle bar being accessible through said lateral opening;
- an elongated hollow nose coaxial with said sleeve to receive the reciprocal needle, joined to said sleeve by a frustoconical juncture, and having a material follower surface on the end thereof.
Dependencies are inferred from the claim text.