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US Patent: 125,617
Improvement in Carpenters' Adjustable Bevels
Patentees:
Isaiah J. Robinson (exact or similar names) - St. Johnsbury, VT
Henry Fairbanks (exact or similar names) - St. Johnsbury, VT

USPTO Classifications:
33/473

Tool Categories:
layout tools : squares : try squares
layout tools : bevels

Assignees:
None

Manufacturer:
St. Johnsbury Tool Co. - St. Johnsbury, VT

Witnesses:
Thaddeus Fairbanks
A. N. Fairbanks

Patent Dates:
Granted: Apr. 09, 1872

Patent Pictures: [ 1 | 2 | 3 | 4 | 5 ]
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Description:
Utilizes a sliding piece "F" to lock the bevel at a right angle when required and it may be withdrawn when not required. This was be means of either a rotating (type 1) or sliding piece (type 2) - see images. Mr. James P. Durochia reports "The Type 1 turn is hard to operate and may have been more susceptible to damage due to the thin metal turn piece. The Type 2 slide is easier to operate and more durable."

It should be noted that Robinson later assigned another patent reissue RE8,058 to the co-inventor, Fairbanks, of this patent. It is assumed that Henry Fairbanks is associated with E&T Fairbanks & Co. where Isaiah Robinson was reported to be employed.

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