US2404484A - Double walled container - Google Patents

Description

July 2 1946. F. GETTELMAN 2,404,434

I DOUBLE WALLED CONTAINER I Original Filed March 22, 1959 INVENTOR Fee-mun" Germs-1. MAM

9 ATTQIZNEYS.

Patented July 23, 1946 Original application March 22, 1939, Serial No.

263,380, new Patent No; 2,326,137, dated August.

10, 1943. Divided and this 1943, Serial No. 491,104

This invention relates to improvements in double walled containers; The present application is a division of my 1 application by the same title, Serial No. 263,380, filed March 22, 1939, which matured into Patent No. 2,326,137, August 10,1943; 4

The type of container to which this invention has particular reference is-a barrel or the like with a separate, prefabricated inner wall of inexpensive, non-corrodible material sufficiently flexible to conform to .the inner surface of the outer load-sustaining wall and protected thereby against rupture, the preferred lining being only slightly heavier than the foil and only sufliciently strong to maintainitself against collapse.

The particular subject of the present application is an access fittingwhich, as disclosed, is a tap fitting, and which is claimed in combination with thetwo walls of such a container as that above described. It is the object'to provide novel and improved means for making suitable connection of a tap fitting separately'to the sep-- arately fabricated barrel walls while assuring,

complete conformation of the inner lining to the load-bearing outer wall. Other objects will be apparent to those skilled in the art upon analysis of the following disclosure of the invention.

In the drawing:

Fig. 1 is a view partially in side elevation and partially in section showing a barrel embodying the invention.

Fig, 2 is a fragmentary detail on an enlarged scale showing a modified embodiment of the invention in section.

Fig. 3 is another fragmentary detail on an enlarged scale showing a different, modified embodiment of the invention as it appears in section.

Like parts are identified by the same reference characters throughout the several views.

As explained in the parent application above identified,my improved barrel comprises a loadsustaining outer wall '5 and a relatively light and flexible inner wall 6 separately fabricated and conformed to the outer wall under internal pressure. The two walls are preferably made up in separate cup-shaped end sections secured together at a central joint, the joint then being encircled by a girth band 1 upon which the barrel may be rolled. A separate annulus 8 applied to the end of the resulting barrel and heavily beaded at 9 provides a chine.

Protected by the chine is the access fitting or tap, the construction of which, and its connection with the steam application June 17,

outer-walls of the barrel, constitutes the particular subject matter of this application. 1

- Theinner wall 6 ofthebarrel has a relatively smaller aperture at itsend than is provided in 'theouter wall 5. The tap fitting II) has a shoulder H formed by reducingthe diameter of its inner end- I 2. The reduced end I2 01 fittiiig l0 passes through the aperture in the liner 6, the liner being marginally secured, preferably by welding at l3, to thereduced extremity I 2 of theijltting. i c c The outer wall 5 of the barrel is preferably, formed to provide an annular flange at 14 peripherally engaged externally with the fitting It. Anut I 5;provided at I6 with the annular flange required in conjunction with'theconvem tional tap fitting, is screw threadedto the fitting Ill and provides-a ring" at its lower end which receives the flange Hiv of the outerbarrel wall and holds the clamp against fitting l0.

In the modified construction shown in Fig.2, thefitting into-which the tap. rod isinserted has a flange 1601 which is inone piece therewith;v A reduced extremity I20 provides a shoulder Ill) against which the margin of the liner 6 seats in the same manner as in the Fig. 1 construction. Welding is also used at l3 to join the margin of the liner to the reduced inner end I20 of the fitting. In this construction, as in that shown in Fig. 1, the outer wall 5 of the barrel is provided at the tap opening with an annular flange [4, which may be welded at I8 to the tap fitting, which it embraces.

In the construction shown in Fig. 3, the tap rod-receiving fitting I 0| has a radial fiange [9 providing at III a shoulder within which both the outer barrel wall *5 and the liner 6 are marginall confined under pressure of a ring nut l'5ll threaded to the fitting I0! and provided, as in the Fig. 1 construction, with an annular flange IBI. In this device, no welding is required, since the two walls are clamped together between the radial flange l9 and the nut I50.

It will, of course, be understood that where welding has been referred to, the juncture between the parts may be efiected by soldering, brazing or cementing.

As explained in the parent application above identified, the tap fitting, or at least that portion thereof exposed to the contents of the container, is usually tinned and if the liner is likewise made of tinned sheet metal such as copper, there will be a minimum of electrolytic action. The outer shell or wall 5, being wholly protected from contact with the contents of the container, may be of any desired inexpensive heavy metal such as ordinary iron. 7

'I claim:

I l. A double walled container having in combination with an inner liner and an outer wall having substantially coaxial openings, an access fitting extending through bothof said openings, sealing'means supporting the margin of the liner from said fitting, and a ring nut screwed to said fitting and providing an annularflangein spaced relation to the fitting, said ring nut being engaged with the outer wall about the opening therein. a

i 2. A double walled barrel comprising the comebination' with a load supporting outer Welland afiexible liner therefor, said wall and liner having differentially diameteredopenings and said wall having an integrallmarginal flange about its opening, of a tap fitting having a reduced ,i 7 er end providing a shoulder'against which the margin of the liner is seated and having aportion of larger diameter with which the flange 'of' the outer wall is in sleeved relationfand'ineans for clampingsaid 'marfginal fiange to the fitting.

3. In a barrel the combination 'v'rith a tap fit ting having acen tral bore and a reduced end 7 portion providing an annular shoulder, of a'barrel liner 'ap ertured' to receive the reduced end; portion, means connecting the liner with 'said fitting adjacent said shoulder, and an outer wall in supporting relation to the liner having an aperture and an outwardly turned 'marginal flange through which the fitting extends, said tap fitting being in telescopic relation to said" flange and provided with means holding said flangeto said fitting; Y

In. a barrel, the combination with an aper 7 wall, in combination witha 'relativly'thin flex- 5. The device of claim 4 in which said outer annular portion comprises a nut in screw threaded connection to the inner access portion of said fitting, said inner access portion having a radial 'fiange against which marginal portions of the liner and wall are clamped by said nut.

6, Acontainer having in combination an outer pressure resisting wall and a flexible liner wall of relatively thin, inexpensive, non-corrodible material, adapted by fiexion to maintain bearing contact with the outer wall under pressure of the contents, said walls having registering apertures, a ported access fitting extending through the apertures in both, walls and sealed to the inner wall, said fitting having a circular portion connected with the outer wall along an annular line ,distantrfromthe inner wall, whereby slight relative movements of the fitting and one of the walls with reference to the other may be permitted. V

'7. A barrel having a pressure'resistant' outer ible inner liner' adapted for'bearing contact'with the outer wall, said walls having registering aper tures, with the aperture 'in the outer wallof larger diameter than that in the liner and flanked by an outwardly extending'fia'nge, an access: fitting having one! portion fitted to said'fia'ngaand' an inner end portion extending through the-liner aperture and welded to'the liner," l

3. A barrel having a pressure resistant 'outer wall, in combination with a relatively thin. flexible inner liner adapted forbearing contact'w'iththe outer wall, said walls having registering ap'er-- tures, with the aperture in the outer-wallwof larger diameter than'thatf inthe liner-and'fianked by an outwardly extendingfiange, an access fit ting having one'p'ortion fitted to saidfian'ge an' 1 inner end portion extending through the liner aperture and welded tothe liner, and means in dividually connecting said fitting'with the outer wall independently of its: connection with "the inner wall. 7

' FREDRICK GETTELMAN.

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