Furnace-charging system.

Abstract

Claims

Patente'd May 6, |902. A. B. W. HDGES. FURNACE GHARGING SYSTEM. (Application filed June 7, 1901.! No. 699,525. Patented May 6, 1902. ' A. B. W. HODGES. FURNACE CHARGING SYSTEM. LApplication filed June '7, 1901.1 (No Model.) 3 Sheets-Sheet 2, /I/I A A A A lllllpllglllvql/ll/l/lIIll/llI/lllll/l/I IUI m No. 699,525. Patented Mays, |902. A. w. Houses. y VFUHNCE CHARGING SYSTEM. (Applicalion filed June 7, 19,01.) (Nu Model.) 3 SheetsSheet 3. ith-MEE STATES PATENT OEEICE. ABEL B. YV. HODGES, OF GRAND FORKS, CANADA. FU RNACE-CHARGING SYSTEM. SPEClFlOATON forming part of-Letters Patent No. 69 9,52 5, dated May 6, 1902. i Appiicatiun ined June 7,1901. Sel-inno. 63,581. (umbau.) To @ZZ whom it may concern: Be n known that L ABEL B. W. notons, lo and more especiallyto the feeding or charging of silver, lead, copper, or copper-matting furnaces, Which require to be fed with charges of ore, coke, and flux from the side, top, or end openings through which the charges are I5 introduced. To this end the invention primarily contemplates a mechanical furnace-charging system comprising instrumentalities so constructed and arranged as to provide positive zo and reliable Ineans for charging the furnace or furnaces in precisely the manner as may be required by the condition thereof or of the contents therein. In other Words, the invention comprehends mechanical means where# z5 by the desired charge may be accurately placed throughoutthe entire interior area of thefurnace oratanypoint or position therein, as may be required. 1 A further object of the invention is to util- 3o ize in connection Withvthe system dump-cars or. carriers which are so constructed relatively to the furnace or furnaces as toadmit of being filled or charged'in strict conformity With the position to beoccu pied by the charge in the furnace and i' comprising means for bodily dropping the charge as an entirety into the furnace. y The invention also1 has in view the provision ofmeans whereby there is insured a more 4o even distribution of the coke and ore throughout the furnace than is possible by the ordinary hand feeding. This is especially yso when the furnaces are large and running fast, vand in the case of a matting-furnace when the top is likely to be hot the feeders in the ordinary hand-feeding operation frequently when unwatched push the coke and charge into the furnace carelessly and promiscuously.v This is entirely obviated by the imgo proved mechanical system of feedingor charging contemplated by the present invention, and, besides, a great reduction in labor is accomplished, inasmuch as but a few hands are necessary to quickly and positively operate the system. It is Well understood by those familiar with copper-matting and similar furnaces that at times 'a` furnace operates unevenly-as, for instance, the back end may not be 'properly working down the charge, consequently only requiring a fresh charging at the front end. Also the condition of the furnace at one side may become bad, thus requiring a new charge only on the opposite side until the difficulty is overcome; and, again, it may be desirous and necessaryat times to put more or less coke, limestone, or iron-ore in aparticular part of the furnace. contingencies are met by the present invention on account of the same comprising means for depositing the charge in the furnace throughout its entire area or Within any por-- tion thereof.` Wfithgthese and many other objects in view, which will more readily appear as the nature of the invention is betterY understood, the sameconsists in the novel construction, combination, and arrangement of parts hereinafter more fully described, illustrated, and claimed.` The fundamental feature of the invention involved in the provision of means for mechanically charging thefurnace instrictconformity with the position to be occupied therein by the charge is necessarily susceptible to a Wide range of modification, and different All of the foregoing instru mentalities may be employed for carrying out the system; but a preferred embodiment of theinvention is suggested in the drawings, in Which- Figure l is a longitudinalfvsectional view of a furnace-plant equipped with the charging or feeding system contemplated by the present invention. Fig. 2`is a horizontal sectional vieW on'the line 2 2 of Figgl; the line of section being immediately above the feed-door over Which is arranged to travel the chargecarrier or dump-car. Fig. 3 is a top plan view of a form vof charge-carrier ordum'p-car which may be advantageously employed in carrying out the system, theview also indicating the approximate dumpingarea'thereof With reference to the cross-sectional area of the furnace. Fig. 4 is a cross-sectional view IOO of the charge-carrier o r du mp-car on the line 4 4 of Fig. 3. Fig. 5 is a detail sectional view, v taken longitudinally of one of the charging- Theinventiou may necessarily be carried l out in connection with different types of furnaces and modified accordingly to suit the position and nature of the feed-openings for the furnaces, it being understood by those familiar with the art that some forms of furnaces are provided with feed-openings upon opposite sides thereof, others with feed-openings in opposite ends, and also in some furnaces, especially of the silver and lead-smelting type, the same are provided with no feedn doors on the sides or ends, but are in oommunication with long openings in the feedoor. These slight variations in the styles of furnaces will not alfect the proper carrying out of the invention; but inasmuch as the laty ter possesses special utility in connection with furnaces of the copper-matting type it has been deemed sufficient for illustrative purposes to show the invention as applied to this class of furnaces, the principle remaining the saine in all uses of the invention. right matting-furnaces AReferring particularly to the drawings, the ynumeral 1 designates a furnace plant such as usually employed for copper-matting furnaces, and comprising in its organization a building 2, housing therein one or more up- There are shown in the drawings a pair of these matting-furnaces; but it is obvious that any number may be utilized in connection with the same sysl tem of charging.' Each of these furnaces is of the general form preferably employed for matting purposes. Furnaces of this type are generallyof an oblong rectangular shape in cross-section, as plainly vshown in Fig. 2 of the drawings, and in the form illustrated in the drawings project above the plane of the main horizontal feed-floor 4, extending throughout the area within which the furnaces are operated. The portions of the furnaces 3 projecting above the plane of the horizontal main feed-floor 4 are provided in diametrically opposite sides thereof with the feed-openings 5 which are usually covered and uncovered by suitable doors 6, indicated in dotted lines; and said feed-openings are disposed immediately above the plane of the main feed-Hoor 4 to permit of the passage therethrough of the charge carrier or car 7, which is utilized in the system or apparatus Y to provide for conveying the charge of ore, coke, dsc., to the individual furnaces and bodily depositing the charge therein. Although any successive arrangement or plurality of furnaces maybe observed in carings, the separate furnaces 3 areshown arranged within the same longitudinal plane ot' the building and have extending transversely through and across the same and through the side feed-openings 5 thereof a track 8, the rails of which track are laid upon the main feed-floor 4 and are adapted to receive thereon the wheels of' the charge carrier or cai-'7. It is obvious that one or a number of charge carriers or cars may be operated in connection with the system; but, for illustrative purposes, only one of said cars is shown in connection with the pair of matting-furnaces 3, yet in all uses of the invention the charge carrier or car 7 must bear a definite relation in size and shape to the furnace in order to admit of the furnace being charged to suit every condition thereof. tails of each charge carrier or car 7 may necessarily vary without affecting the invention, and, in fact, different styles ofA dump-cars may be utilized as the charge-car, provided the car is ofsuch a construction as to effect the bodily droppingr of the charge into the furnace in exactly the position to be occupied by said charge. A preferred type of charge carrier or car is shown in the drawings, and the generalcharacteristics ofsaid carare,first, the construction of the car-body') of an approximate W shape in cross-section, thus providing the car-body, upon opposite sides of the vertical longitudinal center thereof, with separate side compartments 10, each of which com, partments is provided with outer and inner downwardly-convergent side walls 11 and 12, respectively, the slope of which Walls insures a better delivery of the charge into the furnace over which the car may be. centered. The separate side compartments 10 of the form of charge carrier or car shown in the drawings extend the full length of the carbody and-are provided with bottom dischargeopenings 13, adapted to be covered and vuncovered by the drop-doors 14, hinged at one edge, as at 15, to the bottom edge of the inner side Wall l2 and normally thrown rto a closed position when relieved of the weight of the charge through the medium of a weighted closing-arm 16. This weighted closing-arm 16 is disposed at such an angle to the dropdoor 14 as to provide for automatically closing the same after a charge has been dropped from the compartment with which the doors are associated. The free unhinged edge of each drop-door 14 is adapted to be engaged by the hooked ends 17 of a plurality of pivotal latches 18, which may be conveniently mounted upon a common pivot-rod 19 and are Weighted at their upper ends, as at 20, to hold the hooks 17 normally engaged With the free edge of the drop-door. Each series of latches 18 has associated therewith a trip-rod 21, having a handle 22 extending at one side of the car-body, whereby the operator may The structuralde-- IOD IIO conveniently release either series of latches. By this construction the separate charges in the separate side compartments l0 ofthe carbody are independently controllable by the operator. The car details above described are not essential to the carrying out ot' the invention; but it is desirable that the car-body be of the same general form as the cross-sectional shape of the furnace, besides having a dumping area approximately equaling the cross-sectional area of the furnace. However, the car-body is somewhat shorter than the major width of the furnace and also narrower than the minor width of said furnace, thus providing means for giving the proper spread to the ore and coke when dropped into the furnace, while at the saine time providing for charging the furiiace throughout its entire interior area. These characteristics of the charge carrieror car are maintained in all adaptations of the invention in connection' with different styles of furnaces. It is also important in carrying out the in-1 ven tion that the charge carrier or car is properly filled or charged ,so that the coke and other material shall be distributed evenly along the entirelength thereof. In other words, it is necessary that means be provided for charging or filling the carin strict conformity with the position to be occupied` by the charge in the furnace. This may be accomplished through the medium of different instru mentalities; but a practical construction is shown in the drawings, and it consists in providing the main feed-hoor 4 with an incline 23, upon which the track 8 is arranged and which slopes downward from the plane of the main portion of the floor into a car-charging pit 25, the roof of which pit is formed by an auxiliary feed-floor section 26, provided therein with a pairof parallel filling or distributing holes 27, constituting charge-apertures, arranged in the same spaced relation as the separate side compartments l0 of the charge-car and of a length equaling the length of such compartments, and providing means for individually filling the separate compartments of the charge-car in conformity with the position to be occupied by the charge in the furnace. The pair of parallel-spaced filling or distributing holes 27 are disposed transversely to the track 8 in the same relation as the furnace or furnaces 3, so that when the charge carrier or car 7 is positioned in the pit 25, directly beneath the floor-section 26, the said holes 27 will be arranged longitudinally of and parallel with the separate' side compartments l0 of the car, and also being disposed within the vertical plane of both sides of the latter. Any suitable means may be resorted to for operating the charge carrier or car back and forth through the furnaces and into and out of the charging-pit 25. A simple and practical way of carrying out this part of the system is shown in the drawings and resides in the employment of an operating-cable 28, ar- pulleys 34 and driven from a suitable motor y orengine. Theoperatingmeansdescribed provides for imparting a comparatively rapid motion to the discharge-car, whereby in the 4course of a few minutes the car can nmake va complete trip in iilling a furnace and returning to the charging-pit for refilling. In further explanation of the manner of charging or filling the carrier or car itself it may besta'ted that when the carrieror car is in position in the pit 25, directly beneath the filling or distributing holes 27, a helper first brings a weighed amount of coke in asuitable car or buggy and rolls the same to the extreme end ot' one of the filling or distributing holes 27. Ile then tips the coke buggy or car until a small portionbf the coke falls into the compartment of the charge carrier or car below, and then additional helpers stand in front of the coke-buggy and let only a small amount of coke drop out at a time as the buggy is drawn backward over the entire length of the lling or charging hole, thus providing means for perfect-ly spreading the coke the entire length of the car. Should it be found desirable or necessary, suitable tracks or guides 36 may be provided upon opposite sides of the holes 27 to facilitate holding the coke and ore buggies to aftxed travel as they are drawn over said holes or apertures. After the spreading of the coke throughout the compartments in the manner described the ore is introduced and spread in the same manner to complete the charge in the charge carrier or car before the latter is moved into the furnace. The operation just described is plainly illustrated in detail, Figs. 5 and 6 of the drawings. From these igures of the drawings it is seen that when the wheeler brings an amount of coke or ore in his buggy to one end of one of the charging-apertures 27 he dips or tilts the buggy until the nose or point thereof drops upon the floor and transversely bridges or spans the aperture or hole directly below. To secure an effective distribution of the charge it will of course be understood that the charging aperture or hole is narrower than the buggy, so that the latter completely bridges or spans the aperture in the carrier filling or charging operation. It has already been stated that an additional helper or helpers assist in the handling of the ore as it falls from the buggy; but it may be further explained that as soon as the buggy is tipped at one end of the charging-aperture some of the ore or iiuX necessarily drops out; but as the where needed. Wheeler draws the tilted buggy backward over the entire length of the charging-aperture the additional helper with a shovel or other implement holds back and regulates the ore or linx as it falls from the buggy, so as to only let out sucient material to form an even layer along the entire length of the carrier or car. This is plainly indicated by the illustration of Figs. 5 and 6 of the drawings. From the foregoing it is obvious that if, for any reason, the charge is only needed in the front end of the furnace the charge carrier or car may be charged at the front end of each compartment and would therefore provide for dropping the charge in the furnace exactly Also should one side of the' furnace get bad the charge could be dropped from one side only of the charge carrier or car, and likewise should it be desirable or necessary to put more or less coke, limestone, or iron ore in any particular part of the furnace the charge-car can be charged accordingly. From the foregoing it is is thought that the operation of the herein-described system will be readily apparent to those familiar with the art without further description; and it will be understood that various changes in the form, proportion, and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention as claimed. Having thus described myinvention, what I claim as new, and desire to secure by Letters Patent, is- 1. A furnace-charging system comprising in combination with the furnace, a chargecarrier having a charging area the size and shape of the area of the furnace, means for moving the charge-carrier, and charge-distributing means comprehending a charging aperture or apertures the size and shape of the area of the charge-carrier. 2. A furnace-charging system comprising in ,combination with the furnace, a chargecarrier having a plurality of compartments, the combined dumping area of which approximately equals the cross-sectional area ofthe furnace, means for moving the carrier, and charge-distributing means occupying a location above the carrier When in a position to be charged, said charge-distributing means being constructed to effect a distribution of the charge in the carrier in conformity with the position to be occupied thereby in the furnace. 3. A furnace-charging system comprising, in combination with the furnace, a chargecarrier having a charging area the size and shape of the area of the furnace, means for moving the carrier, and means, disposed within the vertical plane of both sides of the carrier when in position to be charged, for effecting a charging of the carrier in conformity with a predetermined position to be occupied by the charge in the furnace. 4. A furnace-charging system comprising in combination with a furnace, a charge-carrier having a charging area the size and shape of the area of the furnace, means for moving the carrier, a charging-pit for the empty carrier, and charge-distributing means arranged above the pit and comprehending a charging aperture or apertures the size and shape of the area of the charge-carrier. 5. In a furnace-charging system, the main feed-floor, the furnaceopening through the said iioor, a track arranged on the fioor and extending across the furnace, a car-charging pit into which said track extends, an auxiliary feed-floor section constituting the roof of said pit and having elongated filling or distributing holes, a traveling charge-carrier rolling on the track and having several compartments corresponding to said filling or distributing holes, and operating means for moving said carrier over the track. In testimony whereof I affix my signature in presence of two Witnesses ABEL B. W. HODGES. lVitnesses: R. E. WISEMAN, J. HERoN

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