USRE9139E - Nolds - Google Patents

Description

4 Shuts-Shoot 1. W. L. REYNOLDS 8: D. THOMAS, Aulgnorl of onu'thh'd mum tn W. I. Din,

Paddling-Furnace.

Reiasued April 6,1880.

' 4 Sheets-Sheet 2.

W. L. REYNOLDS 8: D. THOMAS,

Aulgnon of one-third Interest to W. B. Dun, Pu ddling-Purnaoe.

No. 9.139. Reluued April 6,1880.

ATTEST.

4 Sheets-Sheet 3. W. L. REYNOLDS 8: D. THOMAS,

Aulgnoru of one-third Interest to W. B. DEAN.

INVENTUHS.

ATTEST.

4 Shoots-Sheet 4. W. L. REYNOLDS & D. THOMAS,

Aulg'noru of one-third Interest to W. B. DIAIJ I:

Puddling-Furnaoe. No. 9,139. Reisaued April 6,1880.

ATTEST. INVENTUHS.

JM 7 0M UNITED STATES" PATENT OFFICE.

WILLIAM L. REYNOLDS AND DAVID THOMAS, OF ST. LOUIS, MISSOURI, ASSIGNORS F ONE-THIRD INTEREST 'IO WILLIAM B. DEAN.

PUDDLlNG-FURNACE.

SPECIFICATION forming part of Beilsued Letters Patent No. 9,139, dated April 6, 1880.

Original No. 114,513, limo mm. 1, 1810 To all whom it may concern:

Be it known that we, \VILLIAM L. Rev- NOLDS and DAVID THOMAS, residents of St. Louis, State of Missouri, have invented new and useful Improvements in Paddling-Furnaces, of which the following is a full, clear, and exact description, reference being had to the annexed drawings, making part of this specification, in which- Figure l is a side elevation of the furnace; Fig. 2, a horizontal section thereof, taken on different levels, as indicated by the dotted lines in Fig. 1 Fig. 3, a central vertical section; Fig. 4, a plan, being a detail showing I 5 the water-boxes; and Fig. 5, an end elevation of the rear end of the furnace.

Like letters refer to like parts.

Our principal aim is to produce puddled iron more economically and of a better qual- 2o ity; and to these ends the invention has relation to theeonstruction of the puddling-ehamher of the furnace.

It also has reference to the heating, regulation, and introduction of the hot-air blast.

It further relates to the shape of the neck of the furnace; also to the mode of constructing the water-boxes, and to the provision wherebythe openings for the entrance of the air-blast are enabled to be kept open.

Referring to the annexed drawings, A, Figs. 1, 2, and 3, represents the improved furnace. It represents the fire-place; and a a represent a double puddling-chamber--that is, a chamber wherein two different balls can be puddled 5 at the same time; and for this purpose the furnace is made comparatively long and narrow, providing room at (I, immediately beyond the bridge-wall I), where one of the puddling operations can be carried on, and at a, imme- 4o diately beyond the place a, and in the direction of the chimney (J, for the other puddlin g operation.

I) D'represent doors arranged respectively on each side of the furnace, and respectively 5 opposite the plaeesc and a.

The furnace-walls are built in the usual form, saving at the rear end, E, near the neck of the furnace. The walls, instead of being contracted gradually toward the neck, are carried a uni- 0 form distance apart until opposite the neck,

Applleatlrm for relssue filed October 5, I877.

and then, in such a direction as to form re-enterin g angles a 0, they are carried to the furnace-neck.

F, Figs. 1, 3, 5, represents anair-blast pipe, which, coming from any suitable direction, is forked into two branches, f f before entering the furnace. These branch pipes are respectively carried into heating-boxes G G, which are located at the bottom of the chimney O and at the end of the flue II. 6o

\Vc do not desire to be confined to the precise shape and construction of the boxes G G shown. They are made double, 9 g, to obtain,

a larger amount of heating-surface; but any suitable form will answer.

From the heating-boxes the branch pipesf f, respectively, along either side of the fur nace and as indicated by the dotted lines in Figs. 1 and 2, and as shown in Fig. 3, are conducted toward the forward end of the fur- 7o naee, and to a pointjust beyond the bridgewall I), where the two branches are preferably united. One of the branches, f, Figs. 2, 8, is then carried out through thcfurnace-wall, and thence along the same until opposite the ashpit. where it is taken into the furnace again, and so as to open in the ash-pit beneath-the fire-place B.

I I I I I I represent'additional branch pipes leading upward from the branches f f, and arranged as follows: three on either side of the furnace and opposite, or thereabout, the following points: the forward end of the cham- 1 her a a, the rear end of the chamber no, and a point midway between the first two named. Thc pipes I I, &c., are carried up within the walls to the upper part of the furnace, and respectively into chambers J J, &c., arranged in the furn ace-walls. The lattcrare perforated, as shown at K K, &c., Fig. 3, opposite the chambers J J, &c., to enable the blast to enter the furnace.

The pipe I, chamber J, and perforation K in effect constitute a llue, by which the airblast is enabled to enter the puddling-chainberin a horizontal direction above the level of the metal being puddled,- and preferably near the roof of the piuldling-chamber.

All the pipes I I, &c., are provided with cut-off valves 6 1' 1' i, &c., and that part of the X00 branch f which enters the ash-pit is also furnishedwith a cut-off, l, operated by a lever, I, Fig. l. The main branch pipes ff are contained ill the furnace-walls until they pass the flue-bridge, and they are then carried beneath the fnrmtce-bottom M.

N N, 810., Figs.- 1 and 2, represent doors arranged on the outside of the fnrnam-wull aml opposite, respectively, the chambers J J, &c.

(I 0, Figs. 3 aml 4, represent two similar water-boxes arranged upon the furnaee-tlmr, am] in the manner indicated in Fig. t. They are independent of each other, aml are suitably supplied with water.

The pmldling-chandler is charged in the two places a and o, nml the furnace is tired in the ordinary way. By reason, however, of the pro|mrtions of the furnace and the relative arrangement of the places a and a. and the tire, the heat is concentrated aml economized, and the desired result is produced with a smaller mnslnnption of fuel than has hitherto been used. The process is further cheapened by the improved method of using the hot-air blast, and which also enables a better quality of iron to be produced.

ly means of the branch pipes I I, &c., the blast can be admitted, as desired, to any part of the furnace, combustion can be made more complete, aml the degree of heat can be suitably modified. In this way the furnace is brought umler perfect control, aml by reason of this not only the right degree of heatean be maintained, but the furnace, if desired, can be heated dill'crently at difl'crent. points.

A furtherimportant advantage accrues from this control. llitherto it has been impracti cable to always heat a pnddling-furnace to the highest degree desirable, for the reason that in so doing a portion of the iron in one part of the furnace might; be ovcrhcated.- With the present improvement a very high degree of heat can be safely maintained at any point without endangering the contents of the furnace elsewhere.

The principal benefit, however, is derived from the introduction of the hot air into the upper part of the pnddling-chamber, and in such manner as not to come in contact with the iron being. puddlcd. The air, entering through the perfoiations K K, passes horizontally into aml across the chamberau, coming in contact with the uneonsumed carbon, passing thcbridge-wall b,and supplying the needed oxygen for its complete combustion, and cansing the upper portion of the clnnnbcr to become full of heat that is gradually borne down toward the hearth of the chamber, intensifying the heat at that point. The temperature is still further increased from the air being in troduced from opposite sides of the furnace and from directly opposite points. The result is that a umch higher degree of heat is at tainable in the present furnace than in the ordinary furnace, enabling the iron to be puddled at such a degree of heat as to cause the removal from the product of objectionable ingredients which hitherto have remained in ordinary puddled iron.

By rtstson of the shape of the wall at the neck of the furnace the tlame is thrown back into the furnace, and, in consequence, the heat is further economized.

In use, the perforations in the fumace-walls, through which the blast enters from the pipes l l, \".c., are apt to be closed from the action of the tire upmi the walls aml from the collection of inmnnbnstiblc matter. In such condition the doors N N are opened, aml by the insertion of a suitable tool the closed apertures are punctured aml reopened.

The lower part of the furnace is cooled by means of water circulating through the boxes 0 0.

lly using two boxes entirely independent of each other no trouble arises from the expansion aml contraction of the material composing the boxes, which ditlicnlty exists when a single box onl v,extendingaronnd the hearth, is employed.

To increase the tire, the blast is turned in the ash-pit.

Having described our invention, what we claim as new, aml desire to secure by Letters atcnt, is

l. The comhinat-ionof thechambcra a, pipes ff, boxes (r G, aml pipes I I I l I l, substantially as described.

2. The chamber a a, boxes G G, pipes ff, pipes l l', and chambers J J, having the perl'orations K K aml doors N N, combined and operating substantially as described.

3. The combination of the furnace A, pipes I aml the chambers J J, having the doors N N aml the perforations K K. substantially as described.

'1. The combination of the furnace A, pipes l I, aml chambers J J,'having the perforations K K, substantially as described.

5. The combination of the chamber a. a, pipes l l, chambers J J, having the perforations K K, aml the valves 1' i, substantially as described.

6. The combination, in a puddling-furnace, of the pipe I. chamber J, having the perforation K, substantially as described.

7. The combination of the furnace A and the chamber J, having the perforations K K and door N, substantially as described.

\VM. L. REYNOLDS. DAVID THOMAS. Witnesses:

(J1me. D. MoonY, PAUL BAKEWELL}.

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