Specification of John Frederick Wieland : bakers' ovens.

  • Fortescue, John.
Date:
1857
Catalogue details

Licence: Public Domain Mark

Credit: Specification of John Frederick Wieland : bakers' ovens. Source: Wellcome Collection.

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    Provisional Specification. 2 A.D. 1857.—N° 224. Fortescue s Impts. in the Construction of the Furnaces of Bakers’’ and other Ovens. the outer door is left open and a current of air admitted, which in passing over the top of the furnace becomes heated, and is thrown downwards by the block or inverted bridge at the end, and meeting with the upward current of air through the furnace bars effectually consumes all the smoke and gases evolved from the fuel. The admission of the proper quantity of air necessary 5 to consume all the smoke is regulated by opening or closing the outer door of the furnace, which should not be left open wider than is necessary to admit the minimum amount of air required. By the use of this Invention the draught is increased, the smoke is con¬ sumed or prevented, and a great economy in fuel effected. 10 SPECIFICATION in pursuance of the conditions of the Letters Patent, filed by the said John Fortescue in the Great Seal Patent Office on the 22nd July 1857. TO ALL TO WHOM THESE PBESENTS SHALL COME, I, John Fortescue, of No. S\ Charles Street, Middlesex Hospital, London, in the 15 County of Middlesex, Baker, send greeting. WHEEEAS Her most Excellent Majesty Queen Victoria, by Her Letters Patent, bearing date the Twenty-sixth day of January, in the year of our Lord One thousand eight hundred and fifty-seven, in the twentieth year of Her reign, did, for Herself, Her heirs and successors, give and grant unto 20 me, the said John Fortescue, Her special licence that I, the said John Fortescue, my executors, administrators, and assigns, or such others as I, the said John Fortescue, my executors, administrators, and assigns should at any time agree with, and no others, from time to time and at all times thereafter during the term therein expressed, should and lawfully might 25 make, use, exercise, and vend, within the United Kingdom of Great Britain and Ireland, the Channel Islands, and Isle of Man, an Invention for “ Im¬ provements in the Construction op the Furnaces op Bakers’ Ovens for the Purpose op Consuming Smoke, which Improvements are also applicable to the Consumption op Smoke in other Furnaces,” upon the condition (amongst 30 others) that I, the said John Fortescue, my executors or administrators, by an instrument in writing under my, or their, or one of their hands and seals, should particularly describe and ascertain the nature of the said Inven¬ tion, and in what manner the same was to be performed, and cause the same to be filed in the Great Seal Patent Office within six calendar months next 35 and immediately after the date of the said Letters Patent.