Apparatus for making helically wound tubular articles
OwnerHarry R. de Poloinventor
Life of this patent
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Abstract
Apparatus for making tubular articles formed of a length of material wound in helical form with contiguous edges of successive convolutions of the material joined with one another comprises a forming section made up of a plurality of guide rollers supported by a vertical arch-type frame so as to define a generally cylindrical configuration. Feed rollers propel a strip of material in a lengthwise direction through the arch of the frame and around the support provided by the guide rollers in a helical path with edges of successive convolutions of the helix abutting one another. As the material is thus in effect coiled into helical form, a sewing machine joins contiguous edges of successive convolutions to form a continuous tubular article.
Claims12
Apparatus for making tubular articles formed of a length of material wound into helical form and having contiguous edges of successive convolutions of said material joined with one another, said apparatus comprising
- forming means comprising an open frame and a plurality of parallel elongate supports projecting from one side of said frame and arranged to define a generally cylindrical configuration
- means for feeding said material in a lengthwise direction to said forming means, through the opening of said frame and around said supports in a helical path with edges of successive convolutions of the helix abutting with one another, and
- means for joining said contiguous edges of successive convolutions of said material to form a continuous tubular article.
Dependencies are inferred from the claim text.