US Patent: 555X
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| Varnish for writing tablets
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| USPTO Classifications: |
| 1/1 |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
May 10, 1804 |
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Description: |
| This patent does not have a patent drawing. The specification is difficult to read, but here is what we have deciphered."Prepare linseed oil prepared by boiling a short time with quick lime and a small quantity of whole ???. Take four ounces of Gum ??? ??? ??? of ??? Turpentine. ... sugar of lead, which will congeal the composition in to a hard durable body. It must be applied to the wood or other substance immediately or it will grow so stiff as to be unable to spread it with a brush." When dried the coating is "polished with a pumice of yellowstone made fine". |
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