USRE3269E - Improved hot-blast fornace - Google Patents

Description

' convey.

'Hndel .stheti -P. HOOP, JR., AND' n. HOOP, Or BERLIN cROssfROADs, OHIO.

Letters Patent No. 83,382, dicea octane/r 27, 186s;A este No. 3,269-, dma Januafry 19,1869.

IMPRovED HOT-BLAST rU-RNACE.

Tha Schedule referred to in these Letters Patent and making part ofthe seme.

vTo all whom 'it rIna/y concern "Be it known that we, P. HOOP, J r., and R. Hoor, of Berlin Cross-Roads, in the' county of Jackson,and State of Ohio, have invented a new anduseful Improvement in Hot-Blast Furnaces; and we do hereby declare that the following is a fu ll,clear, and-exact description of the construction and operation of the same,

reference being had to the accompanying drawings,

` neath rising through the rings, and the blast circulating in the rings one after another, said rings being connected by'means of pipes for the transmission of the aircurrent from one to another', which pipes pass outside of the chimney, and are arranged to be removed and replaced at pleasure. A

It should -be understood that we-l do not elaimto be the original emplc'yersyof rings for this purpose, being well aware that their use, in. analogous manners, is old. In the drawings, A,represents a chimney of ordinary construction, through. asnitable'oriice, b, in the foundation of which, passes a pipe,B, of asiz'e proportioned to the quantity ofthe blast whiclrits-function is to Said pipe passesvertically' upward through the chimney.`

At the proper point, near the bottom of the chimney,

is laid in the masonry-a square plate, c, with a circular aperture through it, as shown in fig. 2, on`which plate rest lugs e,two or more, said lugs projecting from a ring, c, of a diameter, from outside to outside, some inches less-than that of the aforesaid aperture in the plate c, within which aperture is placedthe ring. Similar plates, c, are placed at' convenient distances, one' above another, in the chimney, on which rest similar rings C, as many as may be desired.

'ThepipeBpasses upward, conveyingtheblastthrough the rings O, and, when it has passed the topmost one, it makes a sharp turn to the horizontal, and, passing out through the wall of .the chimney, runs straight,

downward, and then inward, throughthe wall of the chimney again, and into the upper ring C, discharging its current, which, making the circuit of the ring, iinds Aegress through the pipe D, which conducts it to the next lower. ring', and so on until, on its exit from the lower ring, it is ready for the furnace.'

The pipes D D D, &c., which connect' the rings,

vof the oven.

are each formed in three sections, the upper and lower of which project directly from the rings, through the wall ofthe chimney, and the middle one of which connects the said upper and lower sections. of connection, as shown in fig. 1, are all on the outside oi' the chimney. rlhe middle sections being 'the ones most liable to fracture, it is obvious that a damage to one of them may be repaired by replacing it, without stopping the furnace to` cool the blast, or in any way damaging the chimney. v

It will be seen that each ring` rests upon its own foundation, and isv entirely disconnected from the others. In the chimneys in common use, in which rings are employed, the weight of all above rest upon the lower, and herein we claim an improvement.

Any ring that requires removal from any cause, may be taken out withoutdamage to the chimney. The effects of expansion and contraction are'coniined to each ring and its pipes, and thus prevented from extending to the others, while the middle sectionsof the connecting-pipes, being outside 'of the chimney, su'er no damage from re, a fertile source of ruin in the methods nowin use. Another good eiect, resulting from placing the pipes so much on the outside, is, that the flame andA currents which heat lthe rings, havev a free access to them. We also be'- lieve that our improvements-conduce to the durability Having thus described our invention,

What we claim as new, anddesire to secure by Letters Patent, is-

l. The rings O, provided with .the lugs e, in combination with the foundation-plates purpose. described.

2. The rings O, in combination with the pipes D, .madein three or more sections, and having their mid- (lle portions outside the chimney,'asI and forthe purpose specified. v

3. lIn connectionwith an apparatus for heating air for the purposes spccied, in which several heatingvessels or chambers are employed, connecting said heaters by a pipe or pipes, D D, runningeither partly or wholly outside ofthe chimneyor oven, substantially as and for the purposes described. A

4. In a hotpblast apparatus, in which theheaters are connected vby pipes, D D' D, the arrangement of the joints of saidpipes outside of the chimney or ovenfso as not to be exposed to the heat thereof, substantially as described. I. HOOP, JB.

It. HOOP. Witnesses:

BENJ. F. STEARNs, J No. D. BROWN.

The points c, as and for the

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