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    • 9. 发明专利
    • Improvements in packing-devices for rotary valves
    • GB180279A
    • 1922-05-11
    • GB1054322
    • 1921-02-11
    • JOHN OTTO ALMEN
    • F16J15/08
    • 180,279. Almen, J. O. Feb. 11, 1921. Rotary disc valves.-A rotary disc valve, for an internal-combustion or other engine, compressor, or pump, is packed by a plate 10, Fig. 4, with integral or separate expansible washers. The plate shown is adapted for an engine of the type described in Specification 179,333, [Class 7 (vi), Internal-combustion engines, Valves &c. for], having a number of cylinders parallel to a central shaft, and has a central opening 20 for the shaft and ports 21 registering with ports in the cylinder heads. The opening 20 is surrounded by a flange with deep cuts 25 alternately from the inner and outer peripheries, which make the flange resilient. Similar flanges may be formed round the ports 21, in which case the gases enter the internal cuts 25, and press the flange against the cylinder head and the plate 10 against the valve. The cylinder heads are formed with flanges 32 which abut against the plate 10, and packing-tips are formed round the ports 21 by means of grooves 30. Alternatively, the flanges integral with the plate 10 may be replaced by separate rings, interposed between the plate 10 and the cylinder head, and formed with cuts similar to the cuts 25, or corrugated tubes, Fig. 5, may be employed. The latter may be free, or may be attached to the plate 10 or to the cylinder head. Rotation of the plate 10 is prevented by lugs engaging notches 17 in the plate.