US Patent: 5,491X
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Construction of Lamps
Construction of Lamps, and the Economy of Light
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Patentee:
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| Isaiah Jennings (exact or similar names) - New York, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
May 11, 1829 |
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Joel Havens
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Description: |
| This patent is listed by some sources as being granted on 11 Jun., 1829.
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 lamp referred to in the specification of this patent, resembles one for which Mr. Jennings obtained a patent on the 3d of March last, and, like that, is principally intended for the burning of tallow, and other thick fatty substances. A globular body of glass is to contain the fat or oil. A copper tube of half an inch in diameter passes through a cork, fitted into an opening in the lower part of this body, and extends up so as to stand even with its upper surface, which has an opening of about 11 inch in diameter, so as to allow a space around the metal tube. This tube is surrounded with folds of cotton, to answer the purposes of a lamp-wick, so far as capillary attraction is concerned, but terminates about half an inch below the top of the copper tube; above this a short piece of circular wick is put on, which is to extend a little above the top of the tube, for the purpose of being ignited. There is no means of raising this wick, as it is to be renewed when necessary. The patentee has engaged to send one of his lamps for trial, when, should it justify the character which he gives to it, we will furnish an exact description of it with a drawing."
Journal of the Franklin Institute Vol. 6, Sept. 1829 pg. 172 |
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