| 摘要 |
The lubrication system is applied to a pneumatic-operated chain saw. A pneumatic engine (8) is secured to a casing (1) containing mechanical means for driving a gauge teeth chain (3), and a fore wing (la) of the casing (1) carries, fastened thereto, a blade carrying arm (2) for supporting and guiding the chain (3). Two handles (9,10) fastened to the casing makes it possible to use the saw. A reservoir (11), containing lubrication liquid, is connected to the casing (1) in such a manner that one its part (lla), featuring a hole (21), rests against the frame (18) of the pneumatic engine (8), featuring a corresponding hole (28). The two holes are joined by a pipe (12), which opens in an air zone inside the reservoir (11). A duct (13) extends from the reservoir (11) up to a point where the chain (3) passes, so that, due to the pressure of the air entering the reservoir (11), the lubrication fluid is sprayed toward the chain (3). <IMAGE>
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