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US Patent: 8,453X
Apparatus to prevent smoking chimneys
Urban B. A., Lange - Philadelphia, PA

USPTO Classifications:

Tool Categories:
household : chimneys


Not known to have been produced


Patent Dates:
Granted: Oct. 14, 1834

Patent Pictures:
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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. This patent is one of the recovered ones. This patent is in the database for reference only.

For Curing Smokey Chimneys; Urban B. A. Lange, city of Philadelphia. An alien, who has resided two years in the United States; October 14.

This patented apparatus consists of two sets of slats, fixed in a suitable frame, and placed like those of venetian blinds. The two frames are to be inclined towards each other, like the two sides of a roof, the slats pointing upwards. This is to be placed on the top of the chimney and over it a case, or box, open at the sides, which case, or box, is to prevent the blowing of wind down the chimney. The affair is not very clearly described, nor is there any claim made. Like other contrivances for the same purpose, it will probably sometimes succeed, and at others fail.

Journal of the Franklin Institute, Vol. 15, May 1835 pg. 322.

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