US Patent: 810,276
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| Mold for Drain or Sewer Pipes
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Patentee:
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| James B. Hill (exact or similar names) - Findlay, Hancock County, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 30, 1905 |
| Granted: |
Jan. 16, 1906 |
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Joel Havens
"Vintage Machinery" entry for Buckeye Traction Ditcher Co.
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Description: |
| Claim:
A mold comprising a base provided with an upwardly extending flange, a sectional inner shell engaging the adjacent walls of the flange, a sectional expanding ring resting on the base and serving to clamp the inner shell in engagement with said walls, an expansible outer shell of less height than the inner shell and spaced from the latter to favor an intermediate molding-chamber, inwardly extending lugs secured to the upper end of the outer shell and adapted to engage the exterior walls of the inner shell, loops pivotally mounted on one longitudinal edge of the outer shell, and hooks pivotally mounted on the adjacent longitudinal edge of the shell and adapted to engage said loops for clamping the outer shell in engagement with the flange. |
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