US Patent: 280,398 - Prescott's Patent Carpenter's Square Attachment


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US Patent: 280,398

Carpenter's Square
Prescott's Patent Carpenter's Square Attachment

Patentee:

Edwin Prescott (exact or similar names) - Arlington, MA

USPTO Classifications:

33/429

Tool Categories:

layout tools : squares : miter squares

layout tools : squares : try squares

Assignees:

None

Manufacturer:

The Stanley Rule & Level Co. - New Britain, CT

Witnesses:

Jos. P. Livermore

W. H. Sigston

Patent Dates:
Applied:	Apr. 06, 1883
Granted:	Jul. 03, 1883

Patent Pictures:

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Description:

Expands the uses for a try-square attaching an auxiliary blate allow it to also be used as a marking gage,marking bevels for moldings, and to mark out square, hexagonal and octagonal miters. The auxiliary blade is soldered to the contact face of the handle.

Known examples are attached to Stanley No 20 Try Square and Prescott's attachment is marked: PRESCOTT'S PATENT CARPENTERS' SQUARE JUL 3, 83