US Patent: 413,681
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| Bung
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Patentees:
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| Friedrich Pettge (exact or similar names) - Dessau, Duchy of Anhalt German Empire |
| Ludwig Metzger (exact or similar names) - Dessau, Duchy of Anhalt German Empire |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Feb. 27, 1889 |
| Granted: |
Oct. 29, 1889 |
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Patent Pictures:
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Friedrich Pettge and Ludwig Metzger patent October 29, 1889 |
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Stan Schulz
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Description: |
| A two-part bung seal; the outer plug screws into the inner seal. The inner seal is hinged to the frame, and the outer plug attached by a chain. The "key" or wrench to operate this bung seal is shown in the drawing and identified in the specifications. |
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