US2080326A - Insulated metal barrel - Google Patents

Description

May 11, 1937. R. H. MADDOCK 2,080,326

INSULATED METAL BARREL `Filed Nov. 27, `1933 E mvENToR i 05527 14. /Wnbooc/r B o 8' ATTORNEY UNITED STATES PATENT oFFlcE y y INsULA'rED METAL BARREL Robert Maddock, Cleveland, Ohio,` assignor to The Midland SteelProducts Company, Cleveland, Ohio, a corporation of Ohio Application November 27, 1933, Serial No. 699,821

` Claims. (01.220-15) This invention relates to` new and usefulv im- Fig.` 6 is a section of another modified form of provements `in insulated metal barrels. tap, f An important object of the invention is to pro- Fig. 7 is an enlarged section illustrating the vide a barrel having an` inner shell completely application of one form of shock absorbing rings 5 spaced from and suspended in an` outer shell for applied to the rolling ribs, I

insulating purposes by means `of heads for the Fig. 8 is a modified form of the same, inner shell which not only facilitate the assembly Fig. 9 is a further modied form of the shock of the heads of the outer Shell, but also reinforce absorbing rolling ring. the chime portions and end beadsjform substan- ReferringV now to the drawing for various de- 10 tial bearing portions for the out turned flanges tails, thenumeral I0 designates an outer bllged 10 of inner heads to preclude excessive expansion shell of mild steel or other suitable metal having Of the inner head, and provide double ange a bungholel I at the middle of one of its sides strength between the inner and outer shell parand upon each side `of which in the bilged porn ticularly from the standpoint of reinforcingthe tion are formed a pail' 0f outwardly pressed inte* 10 inner shell from distortion due to severe impacts gral annular ribs l2 and 3.the tWO innermost 19 on the chimes and beads of the barrel, l ribs I3, due to the bilge of the barrel, having the Another important object of the invention is greater circumference and` Consequently ferming to form' on1y the bung side of the inner she11 with the two rings upon which the `barrel is rolled in a bilge to facilitate complete drainage of the transportation. This outer shell is preferably container and to provide a bung structure which formed from a flat sheet of metal rolled into a 20 does not interfere with the ready assembly of Cylinder With its `tWO longitudinal edges .illXtathe inner and outer shells. posed for welding with a longitudinal seam oppo- A further object of the invention is to provide site theside in which the bung iS provided. This a special form of tap bush plate which is associcylindrical shell is then bilged and the ribs I2 and ated with the heads of the inner and outer shells I3 are fOllneCl` therein".` l 25 in a. manner to relieve the Weld between the tap In Fig. 2 it Will be nOted that the ends 0f the bush and inner shell from excessive stressestendouter shell in the completed barrel are 1`0l1ed into ing to weaken the welded joints.` beads I4, but it is to be understood that this is A still further object of the invention is to prgthe nalassembly step in the construction of the m vide the outer shell with integral rolling rings or barrel and `before the inner shell I5 iS Placed 30 hoops pressed out of the metal itself and to intherein. The chime DOltOnS 0f the enter Shell crease the section modulus of such ribs with ID are of true cylindrical form or substantially means which are entirely free of all contact with S0 fOr a purpose WhehWill presently appeal .the `insulated inner shell in a manner `to prevent T0 DIfOteCt the Outer aS Well aS the inne!- Shell "d denting of the `outer shell from distorting the against diStOItiOn due t0 the impact Oftlle barrel 35 inner shell. with other objects, reinforcing `ringsIS of sub Still another object of the invention is to pro- Stantially channel Snape CTOSS Section are tted vide the rolling rings or ribs with shock absorbing and spot `Welded at spaced intervals as indicated 4f) adjunctswhich add materially to the long life of by the numeral I'I to the bottom of the two cen- 40 the barrel under the most adverse handling con` tral rolling ribs I3 with the flanges of these reinditions.` forcing rings extending inwardly as'shown in Fig. Other objects and advantages ofthe invention 2 to increase the section modulusof `the ribs I3. will become apparent during the course of the `These reinforcing rings are not necessarily con- 45. following description. I tinuous hoops or rings but may be so if desired.

In the accompanying drawing forming a part `The inner shell I5 of vtheinsulated barrel may of the description and wherein like parts throughbe constructed of steel having its interior suitably out theseveral views are referredto with correpitched or may be composed of metal which responding numerals. quires no pitching such as stainless steel, alumi- Fig. 1 is a side elevation of the improved barrel, num, Monel meal or any other material which ls 50 Fig. 2 is a longitudinal section of the same, non-oxidizing and which will not contaminate the i iig. 3'is atop plan of the barrel, contents of the barrel. This inner shell I5 is also Y Fig. 4 is an enlarged fragmentary longitudinal formed up from a fiat blank rolled into a. cylinder sectionshowing a modified construction,` and Welded along a longitudinal line lengthwise Fig. 5 is amodied formof tap. of the barrel and provided near each end with 55 an inwardly extending annular bead I8. The longitudinal half I9 of the inner shell carrying the bung 20 is bilged and this bilge merges into the other longitudinal half of the inner shell which is substantially cylindrical as best appreelated from Fig. 2 of the drawing. This construction provides for the complete draining of the barrel. From this gure it will also be apparent that the ends or chimesof the inner shell designated by the numeral 2| beyond the beads I8 are perfectly cylindrical and do not contact in the slightest degree with any part of the outer shell or the end heads thereof. The bung 20 as shown is a drop forging and on its under side is grooved for the reception of the outwardly flared edges of the bung hole II which are welded circumferentially to the bung as at 22. This bung 20 is much larger than the bung hole and is further spot welded as at 20' at several places near its outer margin to the inner shell to transmit stress from the outer shell to the inner at points remote from rthe circumferential weld.

The two ends or heads 23 and 24 of the inner shell are outwardly dished discs of the same material as'the shell I5 and are each provided with a. surrounding annular axially extending flange 25. the margins of which are turned outwardly and into radial flanges 26, the circumference of which is slightly less than the circumference of the inner surface of the chime portion of the outer shell. The heads 23 and 24 are slipped into the ends of the inner shell as far as they will go and against the beads I8 which limit their inward movement. The flanges 25 are then circumferentially seam welded to theV cylindrical chime portions of the inner shell to form a liquid tight container, the inner surfaces of which are suitably pitched if the shell is constructed of material which will oxidize. One of the heads, as best seen in Fig. 6 is provided with a tap opening 21 through which the reduced end of a tap bush 28 is extended and welded at 10 on the inside of the head. This reduced portion of the bush 28 also extends through an opening in a tap bush plate 29 so that the annular shoulder of the bush overlaps the margin of this opening which is provided in the depressed central portion of the plate 29 to provide suicient clearance between the upper end of the bush and the walls of cavity 30 in the tap bush plate. This plate is provided with inclined portions 60 to position its surrounding marginal portions 32 against the head 24 to be welded thereto at points remote from the weld of the tap to relieve the same of stress.

The end heads 3| and 32 for the outer shell are dished outwardly concentrically with the inner heads so as to be spaced apart throughout their entire area. The top outer head 3| is provided with an aperature 33 the margins of which rest upon the bridge portion 34 of the tap bush plateto be welded at its margin as indicated by the numeral 35. Both outer heads 3I and 32' are otherwise similar in construction and each is provided with a stepped or Z-shaped ange 36 which includes an annular axially extending flange portion 31 substantially normal to the plane of the head, an intermediate radial portion 38 normal to the portion 31 and extending laterally to meet the chime portion of the outer shell with a portion 6I substantially parallel to the portion 31. .The radially extending flanges 26 of the inner heads 23 and 24 engage the portions 38 of the outer heads to thereby completely suspend or support the inner shell within the outer one with insulating space completely surrounding the inner shell I5 and both of its heads. This insulating space may be lled with suitable insulating material 80, but preferably in the form of seaweed enclosed in paper envelopes 8| wrapped around the inner shell I5 and interposed between the heads of the inner and outer shell.

The outer portions BI of flanges 36 closely contact with the inner surfaces of the chimes of the outer shell and are seam welded as at 39 thereto so that the insulating space between the shells is a dead air space and sufficient of itself to provide ample insulation for the inner shell. The flange portions 6I of the outer heads of Fig. 2 do not extend along the ends of the outer shell as far as the corresponding portions 6I shown in Fig. 4, but in either event the ends of the ange portions 6I are enclosed by rolling the extreme ends of the outer shell into beads I4 in Fig. 2, or I4 as shown in Fig. 4. In the latter, the flange portion 6I is of sufficient length to be rolled into a complete bead 40 within the bead I4 of the outer shell. Besides strengthening the ends of the barrel, this bead forms a convenient hand grip at any point around the circumference of either end of the barrel to facilitate handling and lifting thereof.

In assembling the inner and outer shells, one outer head 32 or 3| may be xed in one end of the outer shell and then the inner shell with its two heads 23 and 24 welded thereto vis slipped into the outer shell with the radially extending flanges 26 of the inner ends having only slight clearance with the chime portions of the outer shell. This serves in locating the inner shell substantially concentric with the outer one which of course facilitates placement of the outer heads 3I and 32 so that the axial portions 31 slip inside of the axially extending flanges 25 to completely support the inner shell while bringing their radial portions 38 into seating engagement with the radial flanges 26. After the outer heads are positioned, they are circumferentially seam welded as at 39 previously described after which the ends of the outer shell are rolled into the beads heretofore described. The edges of the bung hole II may be welded as at 4I to the outer surface of the bung 20 as illustrated in Fig. 2 before or after the heads are assembled. When this welding is done before the flanges of the outer heads are welded to the outer she1l,`this connection of the two shells serves in locating the inner shell centrally of the outer shell. Incase insulating material is used between the shells, it can be wrapped around the vinner shell prior to its assembly in the outer shell and the lateral anges 26 prevent the insulation from being dragged off of the inner shell with its sliding contact with the outer shell. It will be noted in Fig. .4 that the inner shell I5 is devoid of any head locating beads I8 since in this modification the radially extending flange 26 of each head will abut the end of the inner shell to limit movement of the head inwardly of the shell to thereby accurately position it and determine the capacity of the barrel.

Figs. 7 to 9 inclusive show various modifications of shock absorbing rings applied to the two cen tral rolling ribs I3. Fig. 7 discloses a continuous fiat elastic rubber band 42 which when stretched over rib I3, conforms to the contour thereof and is retained in position by the inherent resiliency of the band. In Fig. 8, a flexible band 43 of any suitable material, but preferably possessing elascanized to a substantially flat metal band 44.

which in turn may be welded to the exterior of the rolling rib I3.y In Fig. 9, the roll-ing ribs located as are the ribs I3, are formed with an exterior arcuate seat 45 on opposite sides of which are outwardly converging surfaces 46 of the rib whereby a continuous flexible ring 41 preferably of circular cross section and possessing inherent Aresilience is applied to the rib by rolling the same along the barrel and up an inclined wall to seat in the arcuate seat 45 oi the rib, where it may be, if desired, cemented or vulcanized in place. In this form oi rolling rib 46, the inner channel shaped reinforcing ring 48 is of corresponding cross section to fit the contour of the integral rib 46 and is spot welded thereto.

In Fig. 6 is shown a modied form of tap plate and tap bush which is the same as the bush 28 heretofore described with the exception that the bottom 29 of the depression 30 is welded in any suitaiie manner around the edges of the opening 2'I in the inner head 24. Furthermore, a gasket 50 is placed in the bottom of the cavity 30 for liquid tight sealing engagement with the bottom of tap 28I which is provided with a concentric annular threaded flange 5I for screw threaded engagement with threads provided on the side walls of the depression. In this manner the tap bush 28 can be readily renewed if and when required.

In Fig. 5 a modification ofthe foregoing type of tap bush and plate is illustrated which is useful when the inner shell and heads are made from non-oxidizable material and the inner head 24 tpformed with a hanged tap opening for projection through the tap opening in the bush plate to be bent down and around the edges thereof asindicated at 52.` This dispenses with the necessity of a welded joint at this point since a pliable l'lbber gasket 53 may be squeezed down upon this ange to overlap the same, and fill the cavity by means of the pressure exerted by screwing the tap bush 28' into the cavity of the tap plate.

From the foregoing it will be seen that the radial anges 26 of the inner shell perform many functions. First they serve in locating the inner shell concentrically within and spaced from the outer shell. Secondly they form footing on the radial portions 38 of the outer heads to resist movement of the inner shell. Insulation 90, Fig. 4 may be disposed between these portions 31 and 3l and the ilanges 26 to further insulate the inner shell from the outer one. Thirdly, the ilanges 26 form conilning means for insulation 80 to prevent it from wrinkling or being pulledoif of the inner shell when being inserted with the latter into the outer shell. Fourthly, they add much strength to the ends of the inner shell. Fifth, they limit telescoping of the outer heads -into the inner heads and the inner heads into the inner shell and thereby determine the capacity of the inner shell and nx the spacing of the outer heads from the inner heads. By reason of the ends 6I of the flanges of the outer heads being enclosed within the beads I4 and I4', stress directed toward the seam welds 39 from impact is absorbed by the beads. i

It will of course be understood that vario changes in the shape and arrangement of parts may be resorted to without departing from the scope of the appendedclaims.`

I claim:

l. A double walled barrel comprising an outer shell, having chimes, an inner shell completely spaced from the same, heads for the inner shell having radially extending annular flanges the outer edges of which have slight clearance from the chimes ofthe outer shell and serving to retain the heads and ends of the inner shell substantially concentric with the outer shell, and -heads for the outer shell having annular oiset portions in which said flanges are seated to centralize the inner heads and shell and to space the major portions of the outer heads from the inner heads.

2. A double walled barrel comprising an outer shell having rolled chimes, an inner shell completely spaced from the same, heads for the inner shell having laterally extending annular anges the outer edges of which have slight clearance from the chimes of the outer shell and serving to retain the heads and ends of the inner shell substantially concentric with the outer shell, and heads for the outer shell having annular offset portions in which said iianges areseated to centralize the inner heads and to space the major portions of them from the outer heads, the edges of said outer heads being enclosed within rolled chimes of the outer shell.

3. A double walled barrel comprising an outer shell having chimes, an inner shell completely spaced from the same, heads for the inner shell having radially extending annular flanges the outer edges of which have slight clearance from the chimes of the outer shell and serving to retain the heads and ends of the inner shell substantially concentric with the outer shell, heads for the outer shell having annular oiset portions in which said flanges are seated to centralize the inner shell and to space'the major portions of the outer heads from the inner heads, and insulating material disposed between said offset portions of the outer head and said laterally extending ilanges of the inner head,

4. A double walled barrel comprising an outer shell having a chime portion, an inner shell completely spaced from the walls of the shell, a head for the inner shell having an axially extending flange terminating in a radially extending flange, the edge of which is arranged within and spaced from the outer shell, a head for the outer shell spaced from the inner head and having an axial ilange contacting the axial ange of the inner head, said outer head `having a radial portion forming a seating portion for the corresponding portion of the inner head, and said outer head having a second axial iiange welded to the chime portion of the outer shell, thereby forming the sole support of said inner shell and head spaced from the outer shell.

5. A double walled barrel comprising an outer shell having a chime portion, an inner shell completely spaced from the walls of the shell, a head for the inner shell having an axially extending shell.

ROBERT H. MADDOCK.

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