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US Patent: 331,144
Plumb-Bob for Gas-Fittings
Patentee:
James J. Lawler - Scranton, PA

USPTO Classifications:
33/373, 33/392

Tool Categories:
layout tools : plumb bobs

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
T. Watson
Jas. H. Torrey
H. F. Schneider
J. Nota McGill

Patent Dates:
Applied: Mar. 16, 1885
Granted: Nov. 24, 1885

Patent Pictures:
USPTO pdf tiff
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Description:
This is a specialized plumb bob designed for truing the gas pipe used to hold chandeliers. It screws onto the end of the pipe, and allows the installer to easily check plumb in all dimensions.

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