US42470A - Improved smelting-furnage - Google Patents

Description

. proper.

ELIPHALT HALL, OF MGRIAH, NEW YORK.

llVlPROl/ED SMELTINGFURNACE..

Specification i'oimin g part of Letters Patent No. 412.4 W). dated April 23, 1864.

To all "whom, it may concern:

Be it known that I, ELIPHALET HALL, of Moriah, in thel county koi' Essex and State of New York, have invented a new and Improved SmeltingFurnace; and I do hereby declare the following lto be a full and exact description of `the same, reference being had to the accompanying drawings, making part of this specilica-v tion, in Whic Figure l is a plan of myV improved furnace. Fig. A2 is a vertical longitudinal section in the line x Fig. l. Fig. 3 is an elevation. Fig. 4 is a vertical section in the` line y y, Fig. l. Fig. 5 is ahorizontalsection in the line z e, Fig. 3. Fig. v6 is an elevation of the furnace Fig. 7 is a horizontal section in the line w w, Fig. 61 e Similar letters of reference indicate corresponding parts in the several figures. v

By the mechanical arrangement or combination of parts which constitutes the present invention means are provided whereby wood may beeffectually employed as the heating medium in the process of smelting, it being impracticable to employ i'uel of this character in smelting-furnaces constructed aftenthe plans hitherto devised, by reason ofthe deleterious effeet produced by the opening of the oven door or doors to supply fuel, which opening of the doors would of necessity have to be of frequent recurrence, in consequence ofthe rapiditywith which the wood is consumed; hence coal, from its more substantial nature, has been almost exclusively made use of as fuel. My invention, besides obviat-ing the above diiiculty, admits of a most economical `use of heat, and the advantageous employment of gaseliminated from the wood before the latter is deposited in the oven, all as will be hereinafter fully explained.

In order that others skilled in the art to which my invention appertains maybe enabled tofully understand and use the same, I willv proceed to describe its construction and opera tion.

In the accompanying drawings, A repre'l sents the smelting-furnaceproper, in one end of which is located the fire-grate A. The ore to be smelted may be introduced into the furnace through openings which are closed by the sliding doors a a, and the furnace maybe sup, lported at a sufficient height to allow molds to be placed beneath it, in order thatthe iron will runoff as extracted' from the ore and be formed into pigs in customary manner.

a representsa door which renders the grate accessible for the 'purpose of kindling the fire or removing the uncousumed products of combustion.

B represents a fuel departmentor oven, which v` occupies 4a position above the furnace A, and rests at one end upon the furnace A at a point directly over the fire-grate A', at which point the ovenB communicates with the interiorof the furnace through the throat B2. The throat B?. is opened or closed by a hinged door or valve, B3, which may be operated by a, compound lever, B, through the medium of a jointed rod, b, and link b. s l-Vithin the oven B is mounted au endless chain, 0which is provided with a continuous series of arms, c, between which is placed the wood to be depositcd on the nre-grate A. e

The chain() issupported and turned or rotated by means of cast wheels C', which engage with the links in the manner shown, and which are keyed ,upon and revolved by shafts c c', one of which protrudes through the side of the oven for the reception of a wrench, C, whereby the chain maybe rotated, so las to cause its upper portion, upon which/the wood is deposited,to move horizontallyin the direction of the throat B2. rlhe arms c may be placed at such distance from each other that each space between the links will be sui.- ciently large to contain the requisite charge or quantity of wood to be supplied to the fire at proper intervals to maintain the desired dcgree of heat in the furnace.

To one end of the head of the compound lever B* is jointed a rod, D, which connects with a link, D', the latter being adapted to rotate a pivoted shaft, D2, which is pivoted in a fuel-box, D, mounted on the oven B. In connection with the shaft Dl is employed a door or valve, D4, which is opened by the turning of 'the lever B4, so as to deposit an additional supply of wood upon the chain C simultaneously with the opening of the hinged door B3 and the turning of the chain C, to supply the ire with acharge of `fuel.. Thus the up-` perportion of the chain C discharges aquan tity of wood at one end and receives a supply at the other. The oven B is formed with additional interior-walls, B5, between which and .the furnace,

conducted into the furnace pipe, E', which communicates with the space between the wall B5 and the' outer .walls of the oven B through an opening, E2, Fig. 4. EJ represents a tuyere leading into the stack E ata suitable point belowthe juncture of the stack E and pipe E', and adapted to receive and directa blast of air for the purpose 0f forcing into the pipe'E the escape heat (which rises in the stack E, to insure the effectual accomplishment of which I employ a deillector, y

E4. The escape heat, beingthus conducted into the pipe E', is therebycondueted intothe space between the walls of the oven B, for the purpose of generating sufficient heat in said oven to bake or char the wood contained thereln in such manner asto thoroughly dry y,the same and eliminate gas therefrom. Through thel V,inediuniof a tuyere, F, this/gas, together with the heated air from the stack E, may be forced by a blast of air into a pipe,F, whereby it is A, means being thus provided'for saving all moting the smelt-ing process. 'lheA pipe E gradually increases in width toward' its lower end,to equally distribute the heat and gas into the furnace. y i escape heat being readily employed for getting The apparatus 'admitslof the up steam or any other'desired purpose.

The walls B5, while permittingthe requisite or nearly all the l heat generated inthe furnace and greatly proheating 'of the interior of the oven B, prevent \contact`withthe wood of anything from the 'smoke-stack E that might cause the wood to become ignited; and the oven B is designed to be constructed with suitable ventages,` whereby the heat therein may be reduced .when desired.

The bars of the fire-grate A may, 'if ,de-s

'sired, be formed of hollow cylinders, so as to p constitute boilers to contain water for generating steam', and at the same time prevent inA A jury to the grate-bars bycontact with the-fire.

, Having thus described my invention, the following is what lclaimas newtherein and desire to securebyLetters Patent:

1. In combination with the furnace A, the

fuel department or ovenB, containing afeedingchain, C, the whole being constructed and arranged to operate-substantially in the man-`l ner herein set-forth. y

2. In combination with the oven B, constructed with double walls in the manner described, the'pipe E and tuyere E, adapted to j be employed in connection with a blast yof air' to convey the .escape heat to the purpose set forth.- v

3. Forcing into the s1nelting-furnace A the gas eliminated from-the wood and the heated air conveyed from the stack E by the employthe oven B,'for

nient of the tuyere F and'pi'pe` F', substantially asland for the purposes explained.

The above specification of my Aimproved smelting-furnace signed this 11th `day of Feb; ruary, 1864.

ELIPHALET HALL.

Witnesses:

C. E.L. DU Bois, p G. D. SMITH.

Images