Patent ID: 8382365

Claim:
A horizontal mixer comprising: a mixing bowl having an upper opening; a roof configured to close the upper opening and having a material feed port; a material feed tube attached to the roof and extending upwardly from a periphery of the material feed port to define a material feed passage extending through the material feed port; and a lid disposed in the material feed tube and being movable between a closed position to close the material feed port and an open position to open the material feed port, wherein the lid has an inner surface that is, at the closed position, brought into a position where the inner surface is substantially flush with an inner surface of the roof, wherein the mixing bowl includes a bottom wall and a peripheral wall extending upward from the bottom wall to the upper opening, wherein the mixing bowl is rotatable about a horizontal axis between a mixing operation position where the upper opening is directed upward and closed by the roof for mixing of material fed into the mixing bowl and a non-mixing operation position where the upper opening is displaced from the roof, and wherein the mixing bowl has, at an upper end of the peripheral wall defining the upper opening, a scraper member that is configured to slide on the inner surface of the roof to scrape off material adhered to the inner surface during mixing of the material when the mixing bowl is rotated from the mixing operation position to the non-mixing operation position.