US3010601A - Container nozzle means and method for making the same - Google Patents

Description

E. F. HOLTZ Nov. 28, 1961 CONTAINER NOZZLE MEANS AND METHOD FOR MAKING THE SAME 2 Sheets-Sheet 1 Filed Feb. 2, 1959 lam LEY INVENTOR.

ERNEST F. HOLTZ his attorneys.

1961 E. F. HOLTZ 3,010,601

CONTAINER NOZZLE MEANS AND METHOD FOR MAKING THE SAME Fileii Feb. 2, 1959- 2 SheetS -Sheet 2 ll lI-lllll 46 46 INVENTOR.

ERNEST F. HOLTZ his attorneys.

iinited rates Patent Qhice 3,0lfl,5fll Patented Nov. 28, 1961 3,010,601 CGNTAMR NOZZLE MEANS AND METHOD FOR MAKING THE SANIE Ernest F. Holtz, Chili, N.Y., assignor to Pfandler Permutit Inc Rochester, N.Y., a corporation of New York Filed Feb. 2, 1959, Ser. No. 790,597 9 Claims. (Cl. 220-64) This invention relates to container nozzle means and, more particularly, to nozzle means for steel containers for holding or processing materials such as acid or alkaline fluids. Containers of this nature are commonly formed with nozzles with flanged openings for connections with piping for the supply or discharge of the ma terials, or the attachment of agitators, thermometers, sampling tubes and the like. The inner surfaces of the container and nozzle and the nozzle flange are commonly coated with a corrosion-resisting substance, such as glass or other ceramic or inert material, to protect the metal of the container. In the use of such constructions mechanical strains may be imposed upon the nozzle region of the containers through connected pipe lines, as by making or breaking a flanged connection, or the operation of a valve, or thermal expansion or contraction, and such strains may disrupt the protective coating on the nozzle and adjacent container parts, as, in the case of ceramic coatings and at curved surfaces, as well understood in the art. The protective coating of the nozzle flange may be damaged by mechanical impacts, permitting corrosive fluids to escape and undermine coated portions. Such containers are commonly of large size and the difiiculties, delays and expense of disassembling and returning them to the factory for repairs are readily apparent.

One object, therefore, is to provide an improved container nozzle construction of a more efiicient and economical type.

Another object is the provision of such a construction aflording complete protection for the nozzle and adjacent container surfaces.

Another object is the provision of a nozzle protecting means or shield of a self-contained, practical and convenient nature adapted for application to installed containers in the field with minimum labor and expense.

Still another object is to provide a nozzle protecting means or shield having the above advantages and capable of being readily manufactured and assembled.

Still a further object is the provision of an improved method for forming and applying such nozzle protecting shield parts.

To these and other ends the invention resides in certain improvements and combinations of parts, all as will be hereinafter more fully described, the novel features being pointed out in the claims at the end of the specification.

This invention is an improvement upon the inventions disclosed in the patents to Elbert A. Sanford, Nos. 2,714,470 and 2,725,159, claiming parts disclosed but not claimed herein.

In the drawings:

FIG. 1 is a fragmentary, sectional view of a container nozzle construction embodying the present invention;

FIG. 2 is a similar view showing the nozzle shield parts in course of assembly with jig means for shaping and assembling the same;

FIG. 3 is a fragmentary detail of a portion of the flange of the outer shield part showing wrench engaging means;

FIG. 4 is a plan view split-collar clamping means for attachment externally to the container nozzle;

FIG. 5 is an elevation of the same;

FIG. 6 is a plan view of a wrench for engaging and turning the outer shield part, and

FIG. 7 is an edge view of the same.

The embodiment of the invention herein disclosed by way of illustration preferably comprises a steel container 10 having an outwardly swaged nozzle portion 11 to which is welded, as at 12, an extended portion 13 formed with a flange 14' for connection with piping or other attachment, as is well understood in the art. Such a nozzle may be formed in a dished top or bottom of a container, or in a cylindrical side wall thereof.

Such containers, for holding or processing corrosive substances, such as acid or alkaline fluids, are commonly provided with a lining or coating 15 of corrosion-resisting material, as a glass or other ceramic composition, extending over the inside of the nozzle wall and outwardly over its flange 14 to protect the metal portions against corrosive attack.

The protecting or shield means preferably comprise an inner part 16 formed of relatively thin stainless steel or other known corrosion-resisting sheet metal, having a thickness of about 0.03 of an inch and having a flange portion 17 adapted to be conformed to the inner surface of the container about the nozzle. This shield part has a sleeve 18 extending outwardly in the nozzle and centering the shield part relative thereto, the outer end of sleeve 18 having screw threads 19 rolled therein, as shown. The outer edge of flange portion 17 is formed with a narrow flange 20 turned for engagement with gasket means on the container surface, as hereafter more fully described. This shield part may be formed from a plate and the sleeve portion 18 spun outwardly from it, or it may be formed from a tube with the flange portion 17 spun outwardly as shown, depending upon the proportions, such as the length of the nozzle.

The outer sleeve part 21 is similarly formed from rela tively thin, corrosion-resisting sheet metal having a thickness of, say, 0.03 of an inch. It is formed with a flange 22 turned outwardly over the coated nozzle flange 14, with a sleeve 23 extending inwardly in the nozzle and similarly formed with rolled screw threads 24 adapted to be threadedly engaged with the threads of the inner part 16, as shown in FIG. 1.

A gasket 25 of corrosion-resisting material, such as the commercially known Teflon or the like, has a central opening 2s through which the shield sleeve 18 is inserted, so that the gasket is self-centering on the shield part. The spaces between the shield parts and the surfaces of the container, nozzle and nozzle flange, above and below the gasket 25, are filled with a corrosion-resisting cement 27, such as the commercially known Alkor or Penchlor cements, to completely seal the shield parts to the gasket and to the surfaces of the container and to securely attach them thereto.

in assembling the shield parts to the nozzle construction, the area to be covered by the shield parts is prepared by grinding away all loose glass, rust or the like, and the area is then washed and cleaned with alcohol or other solvent and allowed to dry. The cement is applied to the outer surfaces of the inner shield part 16, above and below the gasket 25 and between the latter and the container and over the sleeve threads 19. This shield part is then introduced into the container through the usual manhole and placed in position over the area to be shielded with its sleeve extending into the nozzle. The outer shield part 21 has its outer surfaces loaded with the cement as described in connection with part 16, so as to completely fill the spaces between the part and the coated surfaces of the nozzle and nozzle flange. Outer sleeve part 21 is then turned by hand to engage its sleeve threads 24 with the sleeve threads 19 of part 16, the further as- 3 sembly of these parts being preferably accomplished by jig means, which will now be described.

The jig means preferably comprises a circular diskshaped head 28 made conveniently of compressed cotton fiber, known commercially as Micarta, reinforced by a metal plate 29 secured thereto as by screws 30. The head has a central, generally conical portion 31 for centering engagement in the sleeve 18 in the nozzle. The head is formed centrally with a clearance opening 32 for a threaded rod or bolt 33 having one end secured in the head, as by means of nuts 34 and 65 threadedly engaged above and below it. The bolt is preferably turned from square stock, leaving an angular central portion 36 for engagement by a Wrench to hold the bolt against turning. The head and bolt are inserted into the container through a manhole and engaged in the sleeves of the shield parts as shown, and the lower end of the bolt is passed through a clearance opening 37 in a cross bar 38 with an adjusting nut 39 threaded on the outer end of the bolt for engagement with the bar. Bar 38' has arms 40 and 41 fixed on its ends and extending upwardly through openings, as 42, in the halves of a split collar or clamp 43, shown in FIGS. 3 and 4. The clamp is bolted externally to the extension of the nozzle and arms 40 and 41 are threaded at their upper ends and provided with nuts, as 44, for adjusting the cross bar 38 relative to the clamp and nozzle.

With the head 28 in position and the bolt 33 extending through the shield parts, nut 39 is tightened while the bolt is held against turning, thus drawing head 28 and its conical portion 31 against shield part 16, to shape its flange portion to the container surface about the nozzle, pressing its flanged rim against the gasket and pressing the cement, retained by the flanged rim, so that it completely fills the spaces between the shield part 16 and the gasket and the container, as shown in FIG. 1. The outer shield part 21 is then turned further by means of the wrench shown in FIGS. 6 and 7, having a disk portion 45 formed with notches 46 and a handle 47. The notches are engaged with tongues 48 (FIG. 3) initially turned downwardly from the rim of flange 22 of shield part 21 and the shield part is turned by means or" the wrench, to screw it into further engagement with the inner shield part 16. The outer shield and its coating of cement are thus drawn tightly against the glass coated nozzle flange, holding both shield parts in tight and effectively sealed contact with the container wall, the nozzle and the nozzle flange. The tongues 48 are hammered back into the plane of the shield flange leaving the flange in smooth condition and the jig parts are withdrawn. When the cement has set, the container is ready for use.

The threaded engagement of the shield parts with each other insures their retention in sealing intimacy with the container and nozzle surfaces. They are readily manufactured and assembled and applied as described, with a minimum of labor and expense, without bolts or other means for fastening them in place, and without any interruption of the glass coating of the container or nozzle. The shield may be applied to the container, therefore, in its installed condition and with a minimum of interruption of its use.

It will thus be seen that the invention accomplishes its objects and while it has been herein disclosed by reference to the details of a preferred embodiment, it is to be understood that such disclosure is intended in an illustrative, rather than a limiting sense, as it is contemplated that various modifications in the construction and arrange ment of the parts will readily occur to those skilled in the :art, within the spirit of the invention and the scope of the appended claims.

I claim:

1. The combination with a metallic container having an outwardly extending nozz e provided at its outer end ,and flange, of a protective shield comprising an inner part of relatively thin, corrosion-resisting metal shaped to substantially conform to the coated inner surface of said container about said nozzle with a sleeve extending out Wardly in said nozzle and formed with screw threads, and an outer part of relatively thin, corrosion-resisting metal having a flange extending'over said nozzle flange with a sleeve extending inwardly in said nozzle and formed with screw threads engaged with the threads of said outwardly extendingsleeve, to secure said sleeves and parts together and to said container, nozzle and flange.

2. The combination of elements specified in claim 1 including a layer of corrosion-resisting cement between said parts and sleeves and said container and nozzle and to seal and further secure the same together.

3. The combination of elements specified in claim 1 including a gasket of corrosion-resisting material between the inner end of said inner part and the coated surface of said container about said nozzle, and a flange on the inner end of said inner part extending toward and pressing said gasket against the coated surface of said container.

4. The combination of elements'specifled in claim 3 including a layer of corrosion-resisting cement between said parts and sleeves and said gasket, container and nozzle and enclosed and retained by said flange on said inner part for sealing and further securing the same together.

5. The combination with a metallic container having an outwardly extending nozzle provided at its outer end with an attaching flange, and a fused ceramic coating covering the inner surfaces of said container, nozzle and flange, of a protective shield comprising a part of relatively thin, corrosion-resisting sheet metal shaped to substantially conform to the coated inner surface of said container about said nozzle and having a sleeve extending outwardly in said nozzle and formed with screw threads,

- a part of relatively thin, corrosion-resisting sheet metal having a flange extending over said nozzle flange and a sleeve extending inwardly in said nozzle and formed with screw threads engaging the threads of said outwardly extending sleeve to secure said sleeves and parts together and to said container, nozzle and flange, and corrosionresisting cement and gasket means between said parts and sleeves and said container and nozzle for sealing the joints therebetween and further securing said sleeves and parts together and to said container, nozzle and flange.

6. Shield means for protecting the surfaces of a container, nozzle and nozzle flange having thereon a coating of corrosion-resisting material, said means comprising a part of relatively thin, corrosion-resisting metal shaped to substantially conform to the coated inner surface of said container about said nozzle and having a sleeve adapted to extend outwardly in said nozzle and formed with screw threads, and a part of relatively thin, corrosion-resisting metal having a flange for covering said nozzle flange and a sleeve adapted to extend inwardly in said nozzle and provided with screw threads for engagement with the threads of the first mentioned sleeve for securing said sleeves and parts together and to said container, nozzle and flange.

7. Shield means for protecting the surfaces of a container, nozzle and nozzle flange as specified in claim 6 in which the first mentioned part is formed with a flange for engagement with sealing means on the glass coated surface of said container and the flange of said second mentioned part is provided with means for engagement by a tool for turning the same for engaging the screw threads of sa d sleeves together and said parts to said container, nozzle and nozzle flange.

8. The method of applying and securing protective shield parts in the glass coated, flanged nozzle of a glass coated container comprising the steps of applying an inner shield part over the inner throat end of said nozzle and extending outwardly in said nozzle and provided with screw threads, applying an outer shield part over the outer flanged end of said nozzle and extending inwardly in said nozzle and provided with screw threads, drawing said inner shield part outwardly to shape and conform the same to the throat end of said nozzle and threadedly engaging together the threads of said parts to secure said parts in close fitting engagement with the portions of said nozzle.

9. The method of applying and securing protective shield parts in the glass coated, flanged nozzle of a glass coated container comprising the steps of applying an inner shield part over the inner throat end of said nozzle and extending outwardly in said nozzle and provided with screw threads, applying an outer shield part over the outer flanged end of said nozzle and extending inwardly in said nozzle and P ovided with screw threads, applying cement between said shield parts and nozzle, partially en- References Cited in the file of this patent UNITED STATES PATENTS 1,086,169 Hall Feb. 3, 1914 2,304,896 Doyle Dec. 15, 1942 2,353,774 Wagner July 18, 1944 2,673,393 Smith Mar. 30, 1954 2,714,470 Sandford Aug. 2, 1955 2,725,159

Sand-ford Nov. 29, 1955

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