US1155731A - Jacketed tank. - Google Patents

Description

619,, i WW W. C. HONHORST.

JACKETED TANK.

APPLICATION FILED MAY22. 1914.

1,155,731. Patented 001;. 5, 1915.

OFFICE.

WILLIAM G. HONHOBST, 0F NEWPORT, KENTUCKY.

JAGKETED TANK.

Specification of Letters Patent.

Patented Oct. 5, 1915.

Application filed May 22, 1914. Serial No. 840,157.

To all whom it may concern:

Be it known'that I,WILLIAM C. Hon- HORST, residing at Newport, Campbell county, State of Kentucky, have invented a certain new and useful Improvement in Jacketed Tanks, of which the following is a clear, full, and exact description, attention being called to the drawing which accompanies this application and forms a part thereof.

There are tanks used for rendering and cooking purposes, for drying fertilizer material etc, in which the necessary heat is ap: plied in form of steam, admitted directly to the tanks and their contents and also applied by means of a jacket surrounding such tanks. Tanks used in the production of fertilizer, and for rendering lard on a large scale are types here under consideration.

The invention concerns the construction of such tanks as described and pointed out in the following specification and claims and as illustrated in the accompanying drawing in which: Figure 1. shows a front view of the lower part of such a tank. Fig. 2. shows on enlarged scale a vertical section through the center of the door-opening and adjacent parts, portions between top and bottom of the opening being broken out to reduce the height of the figure. Fig. 3. shows a similar section taken on line 3+3 of Fig. 1. Fig. a. shows the lower part of Fig. 2, the construction being slightly modifie The tanks are charged with the substance to be treated, through an opening in the top, not shown. The treatment is by heat in form of steam under substantial pressure, the steam being admitted to the tank and also to the jacket or to either only, according to circumstances and particular purposes had in view. Where steam is admitted to the tank directly, this is usually for a time only, after which the product is reduced and finished by heat applied to the jacket, the steam being shut oif from the tank. Separated matter and water are drawn off from the tank at various levels and the product is further reduced by heat applied by means of the j ackct only; Use of a vacuum forms also part of the treatment resorted to in some processes. Remaining substance or residue are removed through an opening A in the lower part of the tank, the opening being surrounded by a frame a. This frame serves for the purpose of receiving the door by which the opening A is closed while the heat treatment is proceeding. In view of the steam pressure to be resisted, this frame as well as the door and the means of attachment for seating it upon the frame are of substantial construction and strength. Bolts adjustably or removably applied are generally used to hold the door in place on the frame. These bolts may be applied in various ways and since no novelty is claimed for this feature, nor for the door, these parts are omitted from the drawing. I11 other words opening A is shown with the door removed and as it wouldappear at the end of an operation when it is open to permit the tank to be cleared. It is essential to the ex peditious manipulation of the matter to be removed that the lower edge of the door opening as presented by the lower part or sill of the door frame is not above the bottom of the tank. It might be below this bottom but by preference it should be even therewith. Compliance with this requirement presents quite a problem and produces certain'complications in the practical construction of such tanks in view of the fact that it locates the means for connecting the lower part of the door frame and the means for forming a part of the jacket of the bottom in practically the same position. These means involve the use of rivets which are used in the construction and since leakage frequently takes place around them, location of rivets where exposed at one of their ends to steam-pressure must be such that, while overcoming the aforesaid complications as to location, access to the rivets is also made possible to permit replacing of defective rivets at any time. These complications are overcome by a construction which satisfies also the last mentioned requirement and is as follows:

Numeral 5 indicates the wall preferably boiler steel which forms the, usually cylindrical, side of the'ta-nk. It contains dooropening A which is cut into the steel plate in such a position that its lower edge is in line with bottom 6 of the tank and some distance above the lower edge of the wall. The door-frame is formed so that its four sides are coincident with the edges of this opening. It is also desirable that the lower edge of this opening and the lower side or sill 7 of the frame are not above bottom 6 of the tank and preferably alined therewith so that the contents of the tank may be convenientl-y removed and raked out without an interfering obstruction. In constructions as heretofore carried out suchalinemerrt was rendcred impossible in View of the manner in which the jacketed bottom was con-- structed.

.The door-frame. is provided with an attaching flange 8 whereby it is attached to side 5 of the tank so as to surround opening A therein. This is by rivets. and the inner heads 'of'these rivets, at least as far as they" are used for connecting the lower flange, are

. countersunk as shown for rivets B is the acket space which surrounds the side of the tank and is formed by this side 5 and by a jacket wall 10 outside thereof and held spaced therefrom by a spacing frame 11. This frame follows the shape of the door frame around the outer ed 'es of the lower flange S of the door-frame to permit connection with wall 5 of'the tank below said flange 8 and entirely independent thereof. This connection is by rivets 16 which pass through the two flanges and through wall 5 of the tank as best shown in Figs. 2 and 3.

' In the modified construction shown in Fig. 4, a spacing ring 17 is provided in place of the annular flange on the underside of inner bottom 6. Rivets 18 serve to hold. the bottom to this ring and to the outer bottom 13 in a manner to form the jacket space C between the two bottoms.

It will now be seen that 1n e1ther case rivet heads wherever exposed to steam pressure are not overlapped or rendered inaccessible by parts of the structure, so that defective rivets, causing leakage may be cut out readily at any tune and replaced. On the other hand, wherever rivet-heads, are inaccessible, as for instance, in the'case of the inner heads of rivets 9, removal: on. account of leakage is never called for, since noleakage can occur at these places because they are" not exposed to steam-pressure.

lower edge of the door-opening inv V the jacket space.

I wa-ll'5, and-the sill the door-frame not 11* which serves to space Walls 5 and 10 around the door frame may be omitted, and parts of flange 80fv this latter frame may serve for this purpose, the width of the flange being enlarged to the necessary extent and its thickness arranged to correspond to I-Iavi-ng' described my invention, I claim as new: 7 Q

1., In a. tank of the character described, the combination of a side wall provided with a door-opening, a dooeframe fitted to this opening: and provided with an attaching flange, rivets whereby said flange is secured tothe side wall, the-inner ends of these rivets WlllGl-l are below the door-opening being countersunk, a. bottom positioned so. as to aline with the lower edge of the opening in said side wall and provided with. a clownwardly projecting; flange fitted against, the. inner-sideof said wall and opposite the countersunk rivets. so as to coyer the inner heads of theserivets and exclude them from. exposure to. steamrpressure, anouter bottom spaced from the. first bottom. and provided with a similar flange which is fitted against the inner; side of theflange of said first bottom and rivets passing through both these flanges and through the side wall below the door frame, for connecting these parts to each other. 7

2, In a tank of the character described, the combination of aside wall provided with a door opening, a doorframefitted to, this. 1 opemng and PLOVldfifl with an attaching flange, rivets whereby said flange is secured to the sidewall, an inner bottom and an outer bottom with spacing ring? between them. and rivets whereby these bottoms. are secured to each other and to the sidewall and in a, manner that the inner bottom; alineswith the lower edge of the door-opening and that the inner heads of those of the rivets first mentioned which are below the dooropening are covered so as to. be beyond the effects of steam-pressure.

Intestimony whereof I hereunto afiix my signature in the presence of two witnesses.

WILLIAM C. HONHORST.

itnesses:

G. Sranerr, A. JoHNsom Gopitsof this patent may be. ohtai-nfiflifor five cents. eac11, by addressing the Gommissionerof Patents,

' t'- Washington, D. G. Y r

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