US Patent: 360,837 - Leveling Instument


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US Patent: 360,837

Leveling Instument

Patentee:

William A. Wright (exact or similar names) - Cave Spring, Floyd County, GA

USPTO Classifications:

33/290

Tool Categories:

specialty tools : surveying apparatus

trade specific : surveyor

Assignees:

William A. Wright - Cave Spring, Floyd County, GA

J. B. Lapsley - Cave Spring, Floyd County, GA

J. W. Lapsley - Calera, Shelby County, AL

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Oct. 06, 1886
Granted:	Apr. 05, 1887

Patent Pictures:

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Description:

Claim:

In a surveyors level, the combination of a circular frame having a beveled central aperture and having the level-bar pivoted above it, a frame having a circular flange upon its upper face fitting around the edge of the upper frame and having a central aperture beveled from above and having the upper frame secured within the flange, and a spherical knob projecting from the tripod and fitting within the bearing formed by the beveled apertures of the frames.