摘要 |
A cylinder head cover (2) for a reciprocating compressor cylinder (1 ) such as an air compressor or internal combustion engine is disclosed. The cover (2) includes a first plate (3) having a first and second channel (19) in a surface of the first plate (3), wherein the first and second channels (19) merge together within the plate (3) at a first opening (18) through the bottom surface of the first plate (3). A second plate (4) is fastened over the first plate (3). The second plate (4) has a pair of bores (7) therethrough each aligned with one of the first and second channels (19) in the first plate (3). A fourth plate (6) is fastened over the second plate (4) forming a cavity between the second (4) and fourth plates (6). The fourth plate (6) has a pair of spaced bores (16) therethrough aligned with the bores (7) through the second plate (4). A rotating third plate (5) is rotatably disposed between the second (4) and fourth (6) plates. This third plate (5) has a pair of spaced bores therethrough for sequentially aligning with one of the pair of bores (7) through the second plate (4). During a full rotation of the third plate (5) each bore through the third plate (5) aligns with each bore (7, 16) through the second (4) and fourth (6) plates. |