| 摘要 |
A new and improved hand-held scraper apparatus is disclosed for scraping a surface at a plurality of predetermined scraping angles. The apparatus includes a blade support, and the apparatus is used by an operator for scraping a surface with a push-pull scraping motion parallel to the longitudinal axis of the blade support. More specifically, the apparatus includes a rigid handle, a rigid blade support connected to the handle, and a plurality of non-adjustable, blade-receiving slots located in the blade support and arranged at predetermined increments along the longitudinal axis. Each of the blade-receiving slots is oriented at a respective predetermined slant angle with respect to the longitudinal axis. The slant angles are in a range from ninety degrees to zero degrees. A blade is inserted into a respective blade-receiving slot, and, in use, the blade forms a respective scraping angle with the surface that is scraped. The respective scraping angle is supplementary to the respective slant angle. The handle has a longitudinal axis which is parallel to the blade support longitudinal axis, and the handle and the blade support are a one-piece structure. The respective blade-receiving slots include guide pins for guiding the blade into the respective blade-receiving slots. The blade also includes guide slots that are complementary to the guide pins. The blade-receiving slots also include gripping devices, such as spring-loaded rollers, to grip complementary structures, such as notches, on the blade.
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