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US Patent: 424,988
Clamp for Molders Flasks
Edward E. Josef - Buffalo, NY

USPTO Classifications:
269/186, 269/244, 269/245

Tool Categories:
trade specific : patternmaker
work holding : clamps


E. E. Josef - Buffalo, NY

W. T. Miller
Otto Hoddick

Patent Dates:
Applied: Feb. 24, 1889
Granted: Apr. 08, 1890

Patent Pictures: [ 1 | 2 ]
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Martin J. Donnelly Antique Tools
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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