US Patent: 353,846 - Spirit Level


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US Patent: 353,846

Spirit Level

Patentee:

Gustavus Cook (exact or similar names) - Watertown, NY

USPTO Classifications:

33/386

Tool Categories:

layout tools : levels

Assignees:

None

Manufacturer:

Davis & Cook - Watertown, NY

Witnesses:

Chas. W. Howard

James W. Plumb

Patent Dates:
Applied:	May 14, 1886
Granted:	Dec. 07, 1886

Patent Pictures: [ 1 | 2 ]

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Description:

Claims include a level with a spindle shaped bubble tube supported at its ends and left visible at the middle part, transpatent covers, adjusting mechanism, and a mark on the bubble tube for an index.