| 摘要 |
A novel, mechanical method and apparatus for scraping desired solids from the interior walls of various vessels, especially spherical glass or metal flasks common to chemical laboratory settings is described. The present invention utilizes spinning, flexible, abrasive tentacles fixed to a vertical shaft. The rotary motion of the vertical shaft is driven by a simple electrical or pneumatic motor. Centrifugal force extends the tentacles, which act as brushes, whereby their abrasive contact with the solids caked to the interior walls effects mechanical scraping. While spinning, the apparatus is moved vertically up and down to effect complete scraping. The present invention, therefore, rapidly removes the majority of dry solid material stuck to the interior of a spherical vessel with a minimum of physical effort. This method provides a significant improvement over the existing standard practice of slow, uncomfortable, manual scraping with spatulas. |
| 主权项 |
1. A tool for scraping desired solids from the interior walls of laboratory-type vessels comprising:
a vertically extending elongated rod, said rod having an upper end and a lower end and having a diameter that is small enough to fit within the open top of the vessel, said rod having a length that allows it to extend from the bottom of the interior of said vessel to the outside of the vessel above the open top; a first plurality of flexible tentacles attached to said rod adjacent said lower end thereof, said tentacles being connected to said rod and being so constructed and arranged so that said lower end of said rod with said tentacles attached can pass through said open top of said vessel, said tentacles having a length which allows them to contact the inner wall of said vessel, and motor means attached to said upper end of said rod for rotating said rod at a speed sufficient to cause said tentacles to spin and extend outwardly by centrifugal force to scrape the inside walls of said vessel. |
