US Patent: 424,988
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| Clamp for Molders Flasks
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Patent Dates:
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| Applied: |
Feb. 24, 1889 |
| Granted: |
Apr. 08, 1890 |
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Patent Pictures:
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Martin J. Donnelly Antique Tools
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Description: |
| A flask clamp holds the two halves of flask together. Moisture in the molding sand turns to steam when the molten metal hits it. The steam can cause the the top half to lift slightly giving the molten metal somewhere unintended to go! A flask clamp keeps the two halves from separating. |
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