Apparatus and method for measuring angle of repose
AssigneeXerox Corporation
InventorFrederick W. Hudson
Life of this patent
Estimating the term…
Abstract
There is disclosed a device and method for measuring the angle of repose of a granular material. The device is composed of a rectangular body having an open ended partition dividing the body into two cells. A sample of granular material is placed in one cell and allowed to flow from one cell into the other cell under the influence of gravity. Both the static and dynamic angle of repose can be determined.
Claims20
An apparatus for measuring the angle of repose of granular material comprising a right-angle parallelepiped body, at least one side of said body being visually transparent, said body divided into two cells by an open ended interior partition sealed on three sides of said body, said open end providing a passageway between said cells for the passage of granular material from one cell to the other, said partition situated in a plane normal to said body, a measuring means on said transparent side to measure said angle of repose of said granular material and at least one cover on one end of said body.
An apparatus for measuring the angle of repose of granular material comprising a body, said body divided into two cells by an open ended interior partition, said open ended partition providing the sole passageway between said cells for the passage of said granular material therebetween, said partition being in a plane normal to said body, at least a portion of said body being visually transparent, said visually transparent portion containing a measuring means to measure the angle of repose of said granular material, and at least one cover on one end of said body.
An apparatus for measuring the angle of repose of granular material comprising a right-angle parallelepiped body, at least one side of said body being visually transparent said body divided into two cells by an open ended interior partition sealed to three sides of said body, said open end providing a passageway between said cells for the passage of granular material from one cell to the other, said partition situated in a plane normal to said body, and at least one cover on one end of said body.
A method to determine the angle of repose of granular material which comprises;
- 1. providing an apparatus comprising a right-angle parallelepiped body, said body divided into two cells by an open ended interior partition sealed to three sides of said body, said open end providing a passageway between said cells for the passage of granular material from one cell to the other, said partition situated in a plane normal to said body and at least one cover on one end of said body;
- 2. placing a sample of said material in one of said cells and leveling the top surface of said sample while said body is retained in a horizontal position;
- 3. slowly raising said body to a vertical position so as to cause a portion of said sample to pass through said passageway to said other cell;
- and,
- 4. while in said vertical position measuring the angle formed by the top surface of said sample which passed through said passage and its supporting surface.
A method to determine the angle of repose of granular material which comprises;
- 1. providing an apparatus comprising a right-angle parallelepiped body, said body divided into two cells by an open ended interior partition sealed to three sides of said body, said open end providing a passageway between said cells for the passage of granular material from one cell to the other cell, said partition situated in a plane normal to said body and further including covers for each said cells;
- 2. placing a sample of said material in one of said cells and leveling the top surface of said sample while said body is resting in a horizontal position;
- 3. slowly raising said body to a vertical position so as to cause a portion of said sample to pass through said passageway to said other cells, and;
- 4. while in said vertical position measuring the angle formed by the top surface of said sample which passed through said passageway and its supporting surface.
Dependencies are inferred from the claim text.