Stoves and furnaces – Fire pots and linings – Divided
Patent
1981-04-01
1982-07-13
Yeung, James C.
Stoves and furnaces
Fire pots and linings
Divided
126164, F24B 1302
Patent
active
043389147
ABSTRACT:
A combination air tunnel and andiron device conducts air from a fireplace floor opening, forward through an adjustable damper opening and then over and under logs supported spacedly above the upper surface of the air tunnel. The principal structural members are a pair of I-beams extending forwardly from a rear tunnel plate, of a depth roughly twice as great as the height of the air tunnel; their upper chords serve as heavy duty andiron surfaces on which firewood rests, confined forwardly and rearwardly by the upstanding extensions of the forward and rear plates of the tunnel. The space between the air tunnel and the andiron surfaces provides a reservoir for hot coals, to kindle newly added logs. A draft provision is made in the forward plate in registration with the air tunnel.
The combination air tunnel and andiron device is specially useful to provide external draft to fireplaces sealed by glass doors, where a conventional ash grate near the rear of the fireplace may be removed and external air supplied from beneath. For new construction, after a foundation slab is laid, a fire-resistant channel is positioned on it, leading inward through the outer wall of the building. The channel is inverted so that its planar outer web surface is presented upwardly; fire-resistant brick are laid flanking the sides of the channel to form the fireplace floor, but leaving a gap or space at the forward end of the channel, and the outer end is screened. Thereafter, when the fireplace is built about the firebrick floor, the gap or space forwardly of the inner end of the channel permits outside air to flow through the channel and upward into the rear portion of the fireplace, beneath the air tunnel-andiron device so provided.
REFERENCES:
patent: 2375318 (1945-05-01), Mudgett
patent: 4076012 (1978-02-01), Meeker
patent: 4106475 (1978-08-01), Mayes
patent: 4173967 (1979-11-01), Brown
patent: 4213445 (1980-07-01), Mayo
patent: 4248205 (1981-02-01), Saunders
Gross Jerome A.
Yeung James C.
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