Extendable auger
OwnerFrank A. Togstadinventor
Life of this patent
Estimating the term…
Abstract
An extensible grain auger includes a casing defined by co-axial telescoping sections, with an inlet at one end and an outlet at the other end of the casing, a pair of inter-connected auger tubes rotatably mounted in the casing, the flight of one tube being threadable into the auger flight of the other tube; and an extension tube and screw assembly rotatably mounted in the auger tubes, the extension tube extending out of the casing at one end and the screw being connected to a nut in the tube and to the other end of the casing, so that one casing section can be extended and retracted relative to the other casing section.
Claims5
An extensible auger for granular material, said auger including casing means and first and second interconnected hollow shaft means rotatable in said casing means;
- a hollow helical first auger flight on said first shaft means opening into the interior of said first shaft means;
- a helical second auger flight on said second shaft means extending into said first hollow auger flight between retracted and extended positions;
- first drive means positioned within and separate from said first and second shaft means, for moving said first and second shaft means and said auger flights between extended and retracted positioned, second drive means for rotating said first and second flights simultaneously in said casing means.
An extensible auger for granular material comprising a casing defined by first and second tubular sections slidably interconnected for movement between retracted and extended positions, each of said sections having a closed end and an open end;
- an inlet in a closed inner end of said first section for introducing granular material into the casing;
- an outlet in the closed outer end of said second section for discharging granular material from the casing;
- auger means in said casing for conveying granular material from said inlet to said outlet, said auger means including first and second interengaging hollow shaft means, one end of said first shaft means being rotatably mounted in said closed end of said first section and one end of said second shaft means being rotatably mounted in said closed end of said second section;
- a hollow helical first auger flight on said first shaft means opening into the interior of said first shaft means;
- a helical auger flight on said second shaft means extending into said first auger flight for movement into and out of said first auger flight between the retracted and extended positions;
- drive means positioned within and separate from said first and second shaft means, and extending between the closed ends of said first and second sections for moving the sections, and consequently said first and second shaft means and auger flights between the extended and retracted positions.
Dependencies are inferred from the claim text.