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US Patent: 13,127
Try Square and Bevel
Patentees:
Jonas S. Halstead - New York, NY
Cornelius J. Ackerman - New York, NY

USPTO Classifications:
33/429

Tool Categories:
layout tools : squares
layout tools : bevels
layout tools : squares : miter squares

Assignees:
None

Manufacturer:
Unknown

Witnesses:
Jos. Geo. Mason
John Mason

Patent Dates:
Granted: Jun. 26, 1855

Patent Pictures: [ 1 | 2 ]
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Description:
This square is designed for laying out mitered moldings in windows and doors. It features an adjustable bevel build into the back of the handle, allowing both angles of a mitered sash to be marked at once.

Known examples are marked with both inventors' names, as well as the patent date.

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