US Patent: 5,434X
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| Mode of Making Spectacles With Spiral Springs
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Patentee:
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| Samuel Babcock (exact or similar names) - Middletown, Middlesex County, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Apr. 03, 1829 |
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Joel Havens
X-Patents
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Description: |
| Most of the patents prior to 1836 were lost in the Dec. 1836 fire. Only about 2,000 of the almost 10,000 documents were recovered. Little is known about this patent. There are no patent drawings available. This patent is in the database for reference only.
"The main feature of this invention is, the giving to the temple, or side piece, one, or more, spiral turns, close to the joint of the eye frame. For this purpose the side piece is made of round wire. This gives much greater elasticity than the ordinary mode, and the same degree of strength in a lighter article.
The joint is put immediately on the extremities of the bezel, instead of extending it on an end piece in the usual way. The joint pin is a screw, answering the purpose of confining the glass, as well as that of a pivot."
Journal of the Franklin Institute Vol. 4, Jul. 1829 pg. 50 |
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