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US Patent: 1,040,078
Marking-Gage
Patentee:
August H. Widen - Beverly, MA

USPTO Classifications:
33/42

Tool Categories:
layout tools : marking gauges

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Anton Akeson
Anthony P. Hopkins
M. H. Schifer
John A. Donegan

Patent Dates:
Applied: Aug. 12, 1911
Granted: Oct. 01, 1912

Patent Pictures:
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Description:
This is a machinist's scratch gage reminiscent of the Barrett patent (384,413) with two new and very interesting features: a rack-and-pinion head adjustment, and an adjustable marking point.

The head adjustment here is a real marvel-- turning the top screw drives a worm gear via a pair of tiny bevel gears. This worm gear engages a rack milled into the arm. A second screw is provided to lock the adjuster in the desired position. This is quite a gadgety and complex design, but it seems like it would be somewhat fragile.

The adjustable point, however, is quite simple yet useful. The point is made in the form of a slotted blade held by a screw in the end of the arm. By loosening the screw. the blade can be adjusted to use like a "grasshopper" gage or a traditional marking gage.

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