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US Patent: 201,276
Improvement in Spirit Level and Plumb
Patentee:
Joab Morss - Philadelphia, PA

USPTO Classifications:
33/385

Tool Categories:
layout tools : levels : wooden levels

Assignees:
None

Manufacturer:
Keystone Tool Works - Philadelphia, PA
R. & E. Mfg. Co - New York, NY
Disston & Morss - Philadelphia, PA

Witnesses:
Hermann Moessner
Harry Smith

Patent Dates:
Applied: May 07, 1877
Granted: Mar. 12, 1878

Patent Pictures:
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Description:
Adjustable level and plumb. Bearing point is rigid while the adjusting screws act directly on the vial casing which is claimed to provide a more certain and delicate adjustment than adjustments provided by springs or spring arms. Known example marked with patent date and R & E MNFG Co.

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