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US Patent: 386,428
Hinge-Gage
Patentee:
Horace G. Fulton - Washington, DC

USPTO Classifications:
33/44

Tool Categories:
layout tools : marking gauges : butt gauges

Assignees:
None

Manufacturer:
Unknown

Witnesses:
C. E. Manning
William Helmick
Gustav Rosier

Patent Dates:
Applied: Feb. 24, 1888
Granted: Jul. 17, 1888

Patent Pictures: [ 1 | 2 ]
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Description:
The Fulton Patent gage is the first really original butt gage design since the Marden Patent(125823), and, like Marden's, was widely copied over the years. As a matter of fact, the basic idea behind this tool was "borrowed" a few years later by the most popular butt gage of all times-- the Stanley #95.

The Fulton's Patent gage uses a simple trick to leave the require gain in the hinge mortise. It has two identical blocks that slide across each other, each carrying a point. The trick is that one point is bevelled to the inside, while the other is bevelled to the outside. This means that the relative distance between the two points will differ by the thickness of the point.

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