tuyere

The tuyere, which is fitted to a wooden conduit of square section that runs along the back of the masonry, is placed in the axis of the cadinhes and enters the masonry at a few centimeters from the bottom in such away that its nozzle comes just flush with the surface of the refractory lining.

Scientific American Supplement, No. 430, March 29, 1884 Various

Air is forced through this hole, called a "tuyere" (Figure 48) by means of

Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon Harold P. Manly

Limbo yielded "sherds of the Early Iron Working (EIW) tradition, several tonnes of slag, and tuyere fragments."

Societies, Religion, and History: Central East Tanzanians and the World They Created, c. 200 BCE to 1800 CE 2008

“Wonderful,” muttered Daeman and went in search of another drink while Hannah and her friends — even the insufferable Harman — droned on, using nonsensical terms such as “coke bed,” “wind belt,” “tuyere” (which Hannah was explaining meant some little air entrance on their clay-lined furnace, near which the young woman named Emme kept working the wheezing bellows) and “melting zone” and “molding sand” and “taphole” and “slag hole.”

Ilium Simmons, Dan 1981

A section of the bellows forms the portion to the right of Fig. 1, showing tuyere forming the connection between bellows and furnace.

Scientific American Supplement, No. 561, October 2, 1886 Various

It will be seen that the current of steam can be regulated by moving the tuyere, D, from or toward the eduction orifice.

Scientific American Supplement, No. 623, December 10, 1887 Various

There are two apertures at the base of the furnace; one in front, about 1 ft. in height, and rather less in width than the internal diameter of the furnace, through which, when the smelting of one charge is finished, the resulting mass of spongy iron is extracted, and which during the smelting is well plastered up, the small conical tuyere being inserted at the bottom.

Scientific American Supplement, No. 561, October 2, 1886 Various

The air necessary for the combustion is sucked through the interior of the nozzle, H, which is in front of the tuyere.

Scientific American Supplement, No. 623, December 10, 1887 Various

Two such bellows are placed side by side, a thin bamboo tube attached to each, and both entering the one tuyere; and so by jumping on each bellows alternately, the workman keeps up a continuous blast.

Scientific American Supplement, No. 561, October 2, 1886 Various

This tuyere is usually made of the same material as the furnace -- namely, of a sandy soil; worked by hand into the required form and sun-dried; but sometimes no other tuyere is employed than a lump of moist clay with a hole in it, into which the bamboo pipes communicating with the bellows are inserted.

Scientific American Supplement, No. 561, October 2, 1886 Various