US Patent: 3,647,227
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| Twin Take-Apart High-Temperature Shaft Seal
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Patentees:
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| Bruno V. Lojkutz (exact or similar names) - Chicago, Cook County, IL |
| Dale J. Warner (exact or similar names) - Chicago, Cook County, IL |
| George H. Schultz (exact or similar names) - Naperville, DuPage & Will counties, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 15, 1970 |
| Granted: |
Mar. 07, 1972 |
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Joel Havens
"Vintage Machinery" entry for Gits Bros. Mfg. Co.
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Description: |
| Abstract:
A face-type high-temperature resisting shaft seal which can be disassembled without removal of its outer shell or casing from a housing, gearbox or the like in which it is pressed and having a unitary multiple-part inner seal assembly which is easily separated into its components after removal from the shell or casing. The casing is U-shaped, opening in an axial direction, and has one or more keys lugs extending longitudinally on the inner face of the outer wall, each with a crosshead at its outer end. The inner assembly includes an adapter ring with a slot or keyway for each lug wide enough to clear the crosshead. The adapter is retained in the casing by the crosshead when rotated to abut one side of the keyway with the lug. The adapter carrier a carbon seal nose projecting from the casing to ride on the face of an adjoining mating ring. A J-shaped temperature-resisting plastic packing ring has the leg portion thereof sealed against the adapter ring with an elastomeric O-ring and the hooked portion thereof loaded by a garter spring against the inner surface of the inner peripheral wall of the casing. A ferrule ring fits in the adapter and is pressed by a wave spring against the elastomer O-ring to seal the J-packing against the adapter ring. This ferrule has one or more radially projecting ears fitting in a groove at the back end of the adapter ring and this groove is slotted at intervals to permit assembly of the ferrule into the adapter. Thus each of the components of the inner assembly can be separated by rotating the ferrule to a align the ears thereof with the gaps in the adapter permitting the ferrule to drop out of the adapter. |
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