US Patent: 814,157 - Attachment for Steel Squares


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US Patent: 814,157

Attachment for Steel Squares

Patentee:

Thomas F. Norfolk (exact or similar names) - Ottumwa, IA

USPTO Classifications:

33/427, 33/DIG16

Tool Categories:

layout tools : squares : carpenter squares

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Lulu M. Ryder

Grace Heflin

Patent Dates:
Applied:	Mar. 06, 1905
Granted:	Mar. 06, 1906

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Russ Allen.

Description:

Rectangular base plate with each end extending beyond the sides of the square an equal distance that can be clamped on a square to facility repetitive marking of items such as for box making. Second figure shows the use of two of the attachments.