US Patent: 273,440
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| Carpenter's Gage
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Patentee:
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| Wilbur F. Berry (exact or similar names) - Chicago, IL |
| USPTO Classifications: |
| 33/44 |
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Patent Dates:
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| Applied: |
Jun. 12, 1882 |
| Granted: |
Mar. 06, 1883 |
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Patent Pictures:
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1 | 2
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Ralph Brendler
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Description: |
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This is a fairly typical wheeled marking gage, with the added
feature that it can be used as a mitre or octagon square. It
accomplishes this wonder by having several rabbets in the back of
the head, each at various angles.
I question not only the utility of this feature, but its
execution on this piece. It seems like the bearing surface for
the square would be extremely small, and in many instances would
not lay flat on the workpiece. It is an original idea, though!
These pieces were produced commercially, but differed
substantially from the patent drawing. The multiple angle cutouts
on the head were gone, a second roller point was added on the
other end of the arm, and a second head to reference the new
point. The gage produced appears to be substantially more useful
than the one patented.
Note that the two rollers on the production gage are different--
one uses a single bevel (flat to the outside), and one uses a
double bevel. The single bevel wheel is set to rotate freely,
while the double bevel wheel is fixed. The patent claims do not
mention this feature, but my guess is that one side is designed
for wood, and one for metal.
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