| 摘要 |
1,097,469. Portable scrapers. TOS KURIM, NARODNI PODNIK. June 4, 1965 [June 17, 1964], No. 23845/65. Heading B3L. A portable scraper for operating on a working surface comprises a motor 3 coupled by an operating linkage to a support 9 carrying a tool 6, the linkage causing the tool to oscillate along a curved path. The pneumatic motor 3 is controlled by a pressurereducing speed control valve (7) and an on-off valve (8). 500 to 2000 strokes/min. may be made. The motor drives an adjustable eccentric (4) to rock the linkage and oscillate the link 9 carrying a carbide scraping tool. |
