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US Patent: 810,276
Mold for Drain or Sewer Pipes
Patentee:
James B. Hill (exact or similar names) - Findlay, Hancock County, OH

USPTO Classifications:
249/150, 249/173, 249/174, 249/184, 249/99

Tool Categories:
water distribution systems : pipes : pipe molds

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Aug. 30, 1905
Granted: Jan. 16, 1906

Patent Pictures:
USPTO (New site tip)
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Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Buckeye Traction Ditcher Co.
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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