US769421A

US769421A - Apparatus for drying bone-black.

Info

Publication number: US769421A
Application number: US19284803A
Authority: US
Inventors: Moriz Weinrich
Original assignee: Individual
Current assignee: Individual
Priority date: 1903-06-25
Filing date: 1903-06-25
Publication date: 1904-09-06
Anticipated expiration: 1921-09-06

Description

No. 769,421. PATENTBD SEPT. 6, 1904.

' M. WBINRICH.

APPARATUS FOR DRYING BONE BLACK.

APPLICATION FILED JUNE 25, 1903. RENEWED FEB. 53, 1904.

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No. 769,421. PATENTED SEPT. 6, 1904. M. WBINRICH.

APPARATUS FOR DRYING BONE BL APPLICATION FILED JUNE 25. 1903. RENEWED r}: e04.

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M. WEINRICH. APPARATUS FOR. DRYING BONE BLACK. APPLIUATION FILED mm: 25. 1903. RENEWED FEB. 9, 1904.

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M. WEINRIGH. APPARATUS FOR DRYING BONE BLACK. APPLICATION FILED JUNE 25. 1903. RENEWED FEB. 9, 1904. N0 MODEL V f w 1/ UNITED STATES Patented September 6, 1904.

APPARATUS FOR DRYlNG BONE-BLACK.

SPECIFICATION forming part of Letters Patent N0. 769,421, dated September 6, 1904.

Application filed June 25, 1903. 'Renewed February 9, 1904. Seria No. 192,848. K O odel-1 To all w/wm it may concern:

Be it known that l, Moi-LIZ \Vmxmon, a citizen of the United States, residing at Yonkers, in the county of lVestchester and State of New York, have invented new and useful Impror ements in Apparatus for Drying, Revivifying, and ll)ecarbonizing Bone-Black, of which the following is a specification.

My invention relates to certain new and useful improvements in apparatus for drying, for revivifying, and for decarbonizing bone-black and other material; and it consists of the parts and the construction, arrangements, and combinations of parts which I will hereinafter describe and claim.

In the accompanying drawings, forming part of this specification, and in which similar characters of reference indicate like parts throughout the several figures, Figure 1 is a side elevation of the apparatus constructed according to my invention. Fig. 2 is a cross-section of the same on the line A B of Fig. 1. Fig. 3 is across-section on the line C D of Fig. 1. Fig. a is a side elevation of the drum removed. Fig. 5 is an end view of the inlet end of the drum, partially broken away. Fig. 6 is an end view of the discharge end of the drum.

Fig. 7 is an enlarged vertical longitudinal section of the inlet end of the apparatus. Fig. 8 is a similar view of the driving or discharge end of the apparatus. Figs. 9 and 10 are half views of the back and front ends, respectively,

of the apparatus.

In my former United States Patent, No. 586,278, dated July 13, 1897, 1 describe a process by which carbon or other organic matter and also certain inorganic matters can be removed from bone-black through oxidation, and the apparatus hereinafter described, and illustrated in the drawings, is designed for carrying out the aforesaid process and will also be useful for other purposes and may be used for such other purposes without departing from the spirit of my invention.

As an essential part of the present invention I employ a revoluble drum A, which is shown detached in Fig. 1 and the construction of which is set forth in detail in Figs. 5, 6, T, and 8, said drum including two castiron or east-steel head-pieces u and ('17, (shown particularly in Figs. '7 and 8,) said head a at the end of the drum to which the bone-black or other material is admitted being supported by and turnable upon suitable rollers 0' 0 supported by suitable stands if.

in Fig. 9 1 illustrate a half view of the back end of the apparatus, and in this view only the rollers and stand at one side of the vertical center of the drum are shown; but it will be understood that a corresponding set of rollers and a stand will be similarly positioned with respect to the remaining half of this end of the apparatus, and in Fig. 1 the stand of said second series of rollers and one of the rollers c of the second series are shown.

The head at the driving and discharge end of the drum rests upon and turns with a hollow shaft (1, which has an appropriate bearing in a stand f, as shown in Figs. 1 and 8, said hollow shaft having fixed to it in any well-known manner, as by a key, a wormgear g which is engaged by a worm it, fixed to a shaft f, journaled at right angles to the drum and extending beyond the outer wall of the casing of the apparatusand provided with fast and loose pulleys Z and Z designed to be suitably connected with some appropriate power, so that when set in motion thereby will revolve the shaft and cause the worm to revolve the worm-gear and drum.

Referring to liig. 1, it will be seen that the heads a and (1 are connected by a number of stout angle-irons I I, &c., which are securely riveted or otherwise rigidly fastened at the inside to a number of annular angleirons m m m" to form a still and rigid framework, and on or between every two of the angle-irons l. &c., is riveted or bolted a substantially U-shaped trough 12 12' a", &c., constructed, preferably, of steel, said troughs substantially radiating from the drum and imparting to said drum substantially a corrugated form, as shown in Figs. land The troughs are also riveted or bolted to the end heads I!" and a, substantially as shown in Figs. 7 and 8, and the head If at the driving and discharge end of the drum is formed with a series of openings 1/ o 0, &c., Fig. 6, which serve as outlets or discharge-orifices for the boneblack or other material which has been treated during its progress through the apparatus.

By reference to Fig. 7 it will be seen that the head a at the inlet end of the drum has cast or otherwise fixed to its inside suitable wings p 19 29 &c.. which are designed to engage and feed the bone-black or other material forward and into the interior of the drum in the event of any tendency of the material accumulating in the head, thus producing a positive feed for said material.

In actual practice the drum may have a length of from twelve (12) feet to twenty-five (25) feet and a diameter of from three (3) feet to five feet, and said drum is preferably set at an incline of about one-half inch to the foot to insure the desired passage of material therethrough. The head a is also inclosed by a hood B, and the head a is inclosed by a hood C, as shown in Figs. 1, 7, 8, 9, and 10, said hood B connecting with a vapor and air pipe B, having a controlling-damper and having a length of approximately fifteen (15) feet. The hood B is provided with a sliding or other shutter or gate 9, through which the interior of the drum can be examined when occasion demands such inspection, and the aforesaid hood 0 is also provided with one or more sliding or other shutters or gates 8, Figs. 8 and 10, which are kept open during the treatment of the material, so that a continuous draft of air is maintained through the drum A and the vapor-pipe B. In addition to the foregoing the hood 0 has its lower part terminatingin a spout or chute C, through which the treated bone-black or other material which has traveled through the drum and which has passed through the outlets 0 0 0 &c., is discharged into suitable receivers. (Not shown.)

The apparatus described is incased in appropriate brickwork or masonry (shown at F) and rests upon and is supported by a number of iron or steel stands or legs D and metal beams E, which latter extend the length of the apparatus, as shown in Fig. 1. The brickwork or masonry casing surrounds the entire drum and rests partly upon the beams E and partly upon the angle-irons t and is held together by vertical buckstays G and connecting-bolts a, Fig. 2. Cast-iron or other rings *0 o are secured into the brickwork or masonry by means of bolts 10 and encircle the heads a and (0 so as to leave only a narrow annular space between the rings and heads, whereby the outside air is kept out as much as possible from the space between the drum and brickwork or masonry.

The apparatus is provided with a furnace H, which may be of any appropriate type, said furnace being provided with doors w 20 and also a grate at 0, arranged under the feed or inlet end of the drum. At or near the discharge end of the drum and leading out through the upper side thereof is the neck I of a suitable flue, and a suitable damper Y in this neck or in the flue proper controls the discharge through the flue, said flue serving to carry off the waste heat and gases. If desired. the waste gases may be drawn off through the bottom of the brickwork or masonry, in which event a flue-neck K, Figs. 1 and 2, may be used and provided with any well-known form of damper or slide-gate 2O for controlling the outlet of the gases.

The operation of the hereinbefore-described apparatus is substantially as follows: The drum A is rotated by the power conveyed throughthe fast pulley it" and the worm h and worm-gear g and the speed regulated in any well-known manner, so that the drum will make about one revolution in two minutes.

A fire started in the furnace H is slowly in.

creased, but not enough to make the troughs a of, 620., red hot. After about two hours the drum is heated sufficiently to begin the operation of treating the bone-black or material, and said bone-black is allowed to enter the inlet end of the drum through the spout r in a practically continuous stream, the feed of which may be regulated by any well-known and suitable feeding device. As the material enters the hot drum it is heated up at once and alternately lifted and allowed to drop by the troughs, which,in fact,

serve as buckets for the purpose. The shutter or air-vent s in the hood G at the discharge end of the drum and the damper'of the vapor and air pipe B are opened as soon as the operation of feeding the bone-black begins, so that a continuous current of air is created in the drum. In the event of the bone-black or material containing some moisture this will be liberated from the heated material and will escape as vapor with the current of air through the pipe or flue B. During the revolution of the inclined drum the bone-black will be advanced slowly toward the discharge end of the drum, being alternately lifted and allowed to drop, as before explained, and during its passage through the drum said material will be heated up to the desired temperature and exposed simultaneously tothe current of air, which may be regulated by opening the airvent s more or less.

During its progress through the drum the bone-black will be freed first from all its moisture and then through oxidation from the organic impurities taken up by the last use of it, and also, if desired, from any excess of carbon, as set forth more fully in my aforesaid former patent, No. 586,278. The revivified bone-black is discharged through the openings 0 0 &c., in the head a into the spout O, which will in turn deliver it into some suitable cooling device, whereupon it is again ready for use.

The described apparatus may be used also with the same advantage in the revivification of other filtering material than bone-black,

(Not shown.)

especially in that of fullers earth and of infusorial earth; also, for simply drying other materials-f0r instance, coal, ore, sand, beet-pulp, brewers grains, &c.

Among the advantages which can be asscribed to the hereinbefore-described apparatus may be noted the following:

First. The drum being composed of substantially U-shaped troughs offers fully double the heating-surface that is obtained by a smooth-surfaced cylinder, whereby more material can be treated in such a drum without heating the drum to a higher temperature than when using a smooth drum.

Second. There are no rivets exposed to the fire or to the heating-gases.

Third. As soon as one of the troughs becomes deteriorated it can be quickly replaced by a new one with comparatively little trouble and expense.

Fourth. By placing the furnace beneath the feed end of the drum, where the material is the coolest,the inflowing material will take up heat more readily and will prevent the troughs becoming too hot above the fire. In this way the whole drum will be kept at substantially a uniform and moderate temperature and its life will be greatly prolonged.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In an apparatus of the character described, a revoluble drum comprising two head-pieces and a series of independent, U- shaped troughs extending between said headpieces, and independently and removably secured thereto.

2. An apparatus for drying and for revivifying and decarbonizing bone-black and other material including a revoluble drum and end heads therefor, and means connecting said heads, said drum having an annular series of independently-detachable substantially U- shaped troughs connecting with the interior of the drum and imparting to the exterior thereof a substantially corrugated form.

3. An apparatus for drying, for revivifying and decarbonizing bone-black and other material having, in combination, a revoluble drum consisting of two head-pieces; an angleiron framework connecting the same; and a series of independent, substantially U-shaped troughs fixed to said framework and forming, with said head-pieces, a closed drum of substantially corrugated shape.

i. An apparatus for drying and for revivifying and decarbonizing bone-black, and other material, comprising a revoluble drum composed of two head-pieces, a connecting framework, and a series of independent, substantially U-shaped troughs connected to said framework and forming, with the head-pieces, a closed drum of corrugated shape; a hood inclosing the feed end of the drum, and provided with an air-pipe; a hood inclosing the discharge end of said drum, and provided with an air-vent; and a furnace located beneath the feed end of the drum.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

MORIZ WEIN RICH.

\Vitnesses:

JAMES S. Frrcn, M. F. \Vmnurou.