US Patent: 100,463 - Improvement in Spirit Level


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US Patent: 100,463

Improvement in Spirit Level

Patentees:

Edwin A. Stratton (exact or similar names) - Greenfield, MA

Charles M. Stratton (exact or similar names) - Greenfield, MA

USPTO Classifications:

217/69, 33/350, 33/379

Tool Categories:

layout tools : levels : wooden levels

Assignees:

None

Manufacturer:

Stratton Brothers - Greenfield, MA

Witnesses:

Wendell T. Davis

Austin De Wolf

Patent Dates:
Granted:	Mar. 01, 1870

Patent Pictures:

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Description:

Brass binding for levels created by using two flanges at right angles to each other and creating a groove in the stock and held in place by the end cap. This patent was later improved by the Strattons in patent number 370,826 which added a pin through the end cap to secure the binding.