Spiral brush section
OwnerArthur E. Drumminventor
Life of this patent
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Abstract
A helical brush section consisting of a split tubular support which is offset at the split longitudinally to provide helical edges terminating in longitudinally extending contact shoulders at its opposed ends. This section has a bristle-carrying strip helically wound thereon. Multiples of this section are adapted to be disposed on a mandrel with their adjacent edges and shoulders in interfitting nesting engagement to form a continuous helical rotary brush.
Claims9
A helical brush section for use in axially-aligned relationship to form a rotary brush comprising a tubular bristle-carrying support, said support having helically extending edges at its opposed ends terminating in longitudinally extending contact shoulders for engaging adjacent similar sections, said tubular support being rolled sheet metal joined at a longitudinal joint where the adjacent edges of the sheet are offset longitudinally to form the opposed end helical edges and contact shoulders.
The method of forming a helical brush section which comprises forming a tubular support by offsetting the adjacent edges of a longitudinally-split tube at the split thereof to form opposed helical edges at its ends terminating in contacting shoulders, and mounting thereon a helically-extending bristle-carrying strip.
Dependencies are inferred from the claim text.