Sifter
OwnerLloyd F. Eashinventor
Life of this patent
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Abstract
A sifter employing a scoop formed from sheet metal provided with substantially diamond shaped apertures having inwardly extending declining walls with respect to the top surface of the scoop to facilitate separation of different size particles, such as horse manure from saw dust or wood chip particles.
Claims7
A sifter for separating particles of different size comprising an elongated handle having a first end portion and a second end portion, a scoop having a top surface and a bottom surface in spaced relationship to the top surface and provided with a plurality of apertures, each of the apertures being defined by a pair of declining walls extending downwardly at an angle from the top surface of the scoop to facilitate movement of certain of the particles through the apertures provided in the scoop, the scoop comprising a center section, a front section extending forwardly from the center section and defining a leading edge, a pair of upwardly extending side sections secured to and integral with the center section of the scoop, an upwardly extending rear section secured to and integral with the center section of the scoop, and means securing the front end portion of the handle to the scoop.
The sifter of claim No. 1, further comprising an elongated scraper secured to the front edge of the scoop.
The sifter of claim No. 1, wherein the means comprises a reinforcing plate disposed on the top surface of the scoop and the front end portion of the handle is disposed in a conical indentation and against the bottom surface of the scoop.
The sifter of claim No. 1, wherein the scoop formed of expanded metal and flattened defines the top surface and the bottom surface of the scoop in spaced relationship.
The sifter of claim No. 1, comprising a D-shaped adapter secured to the rear end portion of the handle.
The sifter of claim No. 4, wherein the apertures are substantially diamond shaped.
The sifter of claim No. 6, wherein each of the apertures provided in the scoop has inclining walls extending upwardly from the bottom surface of the scoop toward the declining walls extending downwardly from the top surface of the scoop, both walls joining each other and defining a knife edge between and in substantial parallel relationship to the top surface and the bottom surface of the scoop.
Dependencies are inferred from the claim text.