US585596A

US585596A - Sylvania

Info

Publication number: US585596A
Authority: US
Publication date: 1897-06-29
Anticipated expiration: 1914-06-29

Description

(No Model.) 2 Sheets-Sheet 1 W. ROTTHOFF & G. K. HAMPELDT. CHARGING APPARATUS FOR BLAST FURNACES. No. 585,596. Patented June29,1897.

w A k Q Q 5 3 w E a $4 959 e x i "BEBE wn'nzssss mvemons V 1% W Y. flwf fiyWW UNITED STATES PATENT OFFICE.

\VILLIAM ROTTHOFF AND GEORGE K; HAMFELDT, OF DUQUESNE, PENN- SYLVANIA.

CHARGING APPARATUS FOR BLAST-FURNACES.

SPECIFICATION forming part of Letters Iatent No. 585,596, dated June 29, 1897 Application filed November 9, 1896. fierial No. 611,446. (No model.)

To all whom it may concern:

Be it known that we, WILLIAM ROTTl-IOFF and GEORGE K. HAMFELDT, of Duquesne, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Charging Apparatus for Blast-Furnaces, &c., of which the following is a full, clear, and exact description, referenoe being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a top plan view showing our improved blast-furnace plant. Fig. 2 is a side elevation of the same, partly in section.

Our invention relates to the charging of stock into blast-furnaces and is designed to provide an improved construction whereby an endless bucket conveyer may be employed from which stock drops continuously into a preliminary hopper, and from which it is dropped at intervals into a lower hopper.

In the drawings, in which similar numerals indicate corresponding parts, 2 represents a blast-furnace, to the top of which leads an endless chain 3, this chain being'provided with a series of buckets 4, which are arranged to receive the stock, carry it upwardly, and dump it into the top of the furnace. This bucket conveyer may be of any desired construction, having the usual sprocket-wheels 5 5 at its ends, its framework being preferably supported upon a tower 6, through which the chain passes. To the lower portion of this bucket conveyer leads a horizontal endless conveyer 7, this being arranged to dump upon the bucket conveyer near its lower end. Upon each side of this horizontal conveyer are arranged a series of bins 8, which are provided with spouts leading to scales 9, from which the stock is discharged directly upon the horizontal conveyer. These bins are filled with the material to be charged, 10, for instance, .being an ore-bin, 11 a limestone-bin, and 12 a coke-bin. The coke-bin is shown as having a spout arranged so as to discharge the coke directly into the buckets of the in clined conveyer, and we prefer to so arrange such bin, though it may be placed and constructed as are the other bins. The bins are filled from an overhead track 13, leading above their tops, and the space at the rear of these bins may be used as a stock-yard for ore. 14: are scales placed near the end of the horizontal conveyer, upon which stock may be weighed and then dumped upon the horizontal conveyer from ore-barrows, which may be operated by hand. The inclined conveyer is driven by a power connection at its lower sprocket-wheel, and the right-hand sprocketwheel of the horizontal conveyer may be connected. therewith, so that both chains are driven from the same source of power.

The buckets of the inclined conveyer discharge into a preliminary hopper 15, having a sealing bell-bottom 17, from which at intervals the stock is dropped into the lower main hopper 16, the bell-bottom 18 of which is lowered at intervals to discharge the stock into the furnace. These two hoppers are necessary when the endless conveyer is used, since without the preliminary hopper the charge dropping from the buckets would not be uniformly distributed in the lower hopper, and a continuous feed could not be dropped directly into the lower hopper, since this is at intervals opened into the furnace.

The advantages of our invention will be apparent to those skilled in the art, since a continuous even feed of stock is afforded with little or no hand-labor.

Many changes may be made in the construction of the conveyors and the bins without departing from our invention, since We claim- Means for feeding stock to a blast-furnace, comprising an inclined endless bucket conveyer leading to its top, means for feeding stock to the lower part of the conveyer, a pre liminary hopper into which the stock is continuously delivered by the buckets, said hopper having a sealing bell-bottom, and a sec- 0nd hopper below the preliminary hopper,

said lower hopper having also a bell-bottom by which the stock may be dropped at intervals; substantially as described.

In testimony whereof we have hereunto set