摘要 |
<p>Variable extractor for ship and boat propellers made with the following items as in the drawing: a) back plate (1) with several holes and gap, b) front plate (2) with several holes, the central of which is threaded and threaded bolt, c) connecting rod (3) with threaded nut or wing nut, d) propeller (4), e) propeller shaft (5).</p> |