US3393821A - Pressure container or barrel, more particularly beer barrel - Google Patents
Pressure container or barrel, more particularly beer barrel Download PDFInfo
- Publication number
- US3393821A US3393821A US403258A US40325864A US3393821A US 3393821 A US3393821 A US 3393821A US 403258 A US403258 A US 403258A US 40325864 A US40325864 A US 40325864A US 3393821 A US3393821 A US 3393821A
- Authority
- US
- United States
- Prior art keywords
- barrel
- beer
- barrels
- plastic
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D11/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material
- B65D11/02—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material of curved cross-section
- B65D11/06—Drums or barrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
Definitions
- a pressure container having a spherical body of plastic material with a substantially uniform wall thickness and two ends parts mounted in direct contact on the spherical body to substantially enclose the same and confer an elongated barrel shape for the container, the end parts being in contact directly with the spherical body at spaced locations and defining a hollow space between the end parts and the spherical body at which there is mounted on the end parts annular rings which provide rolling surfaces for the container.
- This invention relates to pressure containers and particularly beer barrels.
- Beer barrels must be adapted to withstand an internal pressure of about 3 atmospheres.
- Such barrels have been made of wood, aluminum alloys or stainless steel.
- a wooden barrel must firstly be very well built because leakages may occur between the staves as a result of tension or shrinkage etc. Also, wood is very sensitive to mildew, because it is an organic product, so that regular treatments are necessary. Also, wooden barrels which contain beer residues and which are not cleaned at the required intervals may result in mildewing on the inside and cleaning then has to be carried out very thoroughly. Finally, wooden barrels are very heavy and difl'icult to handle.
- Aluminum barrels are subjected to corrosion both on the inside and the outside by the action of chemical products.
- the volume of an aluminum or aluminum alloy beer barrel may vary considerably if it is dented or battered. Every aluminum barrel has to be conditioned before filling.
- Stainless steel barrels are heavy and very expensive and also undergo changes in volume if they are dented.
- low-pressure polyethylene high-density polyethylene
- various other plastics could be used and it is not impossible that in the future other types of plastics will be produced with the same characteristics as, if not better than, the above-described low-pressure polyethylene, it is doubtful whether it is possible to use in practice any plastics other than those in the polyolefin group, amongst which the present-known types include low-pressure and high-pressure polyethylene, and polypropylene. Because of their nature, the lowdensity polyethylenes can be completely ruled out for the manufacture of beer barrels.
- low-density polyethylene high-pressure polyethylene
- Propylene is such a new material that it is still impossible to predict with certainly whether it will be suitable for the production of a plastic beer barrel. However, it cannot be definitely ruled out.
- low-pressure homopolymer polyethylene or low-pressure copolymer or low-pressure copolymer polyethylene which has proved to be suitable for the production of a plastic beer barrel and also polyester reinforced by glass-fiber.
- beer barrels hitherto made from polyethylene are made by the blow method but are not reinforced at the ends or by top plates, etc.
- a third important feature is that all plastic beer barrels hitherto manufactured have simply been copied from existing wooden or other (metal) barrels so that no manufacturer has allowed for the special demands made of a plastic beer barrel.
- the first known beer barrel has the typical shape of a wooden barrel and is a copy thereof.
- the two ends are outwardly curved but at their ends they have a bent recess intended to form what might be termed a grip edge.
- Beer residues can collect in the cavity.
- Economically the barrel has a relatively unfavorable shape resulting in beer residue which makes it also difficult to clean.
- the barrel contracts or expands because of the normal thermal expansion of the synthetic material depending upon the temperature of the liquid or the temperature of the ambient medium. This is unacceptable as regards standardization of quality.
- the barrel and therefore its contents vary.
- This barrel also has a ring and a bung closure of different materials.
- the barrel is not homogeneous entirely and leakage may occur because of the different thermal properties.
- a second plastic barrel is of the traditional shape but has welded ends.
- the barrel has a flat end, which is very poor as a gripping edge and although it is made of plastic material it is very heavy because of the use of a solid end.
- the barrel has an unequal wall thickness and the same disadvantage of deformation in the event of thermal expansion.
- a third plastic barrel is a modification of the last mentioned barrel, and has inwardly curved ends and welded ends or edges. Apart from the normal deformation due to thermal expansion, the pressure of the CO may cause the blown barrel ends to curve out, resulting in an appreciable change of volume. Also, iron or steel tubes are provided to save material in the plastic parts forming the ends and integrally welded to the barrel body. Because of the difference between the coeflicients of expansion of the plastic and the steel, the latter expanding much more, stresses and cracks may occur in the plastic material so that the barrel becomes quite unusable. In this case as well beer residues remain in the barrel.
- the object of the present invention is to obviate these disadvantages and the invention is based on the discovery that various articles subject to high pressures on both the inside and outside can retain a spherical shape imparted to them despite thermal expansions and contractions.
- the spherical shape is the only one which gives this advantage.
- a pressure container and more particularly a beer barrel based on this spherical shape and constructed entirely of plastic has none of the disadvantages of the wooden, aluminum, steel or known plastic Containers.
- FIGS. 1 to 4 show a first embodiment of a barrel and FIGS. to 8 show advantageous variations thereof.
- This pressure container is characterized essentially in that it comprises a body 1 of spherical shape produced by a blowing, pressing, injection moulding, casting, centrifugation operation and having a substantially uniform thickness and two identical end parts 2 made in the form of spherical segments and connected to the spherical body so that the resultant assembly has the shape of a sphere internally while externally it has the conventional shape of a barrel.
- the body 1 and the two end parts 2 are constituted of plastic material.
- Each end part 2 is so shaped as to comprise a peripheral rim 3 and supporting elements or legs 4 for resting on the ground or a base, so that such ends form protective casings while the ribs 3 serve as grips and rolling surfaces.
- the ribs 3 also increase the strength, particularly on dropping.
- hollow prefabricated sheaths or tubes 5 of the same plastic material as the ends are included therein during manufacture.
- the polyethylene of the end is very initimately connected to the tubes of the same material and gives a very lightweight unbreakable and sealing-tight system.
- the barrels can be readily placed one above the other and stacked as a result of the shape of the end parts.
- the barrels can be completely emptied and leave no beer residue, and can readily be cleaned.
- the barrels are very light and can be easily handled.
- FIGURES 5-8 relate to the manufacture of a barrel made of polyester reinforced with glass-fiber.
- 1 and 1 designate the two hemispheres which are connected together for the obtention of the spherical body and 2 -2 are the end-pieces.
- the pieces 1 1 are assembled by a gluing operation of joints shown in FIG. 17.
- the joint for the sphere may occupy another position than represented.
- a characteristic of the pieces 2 2 is that a wall is formed of a flat extremity 57 to which is connected a substantially cylindrical portion 58 provided with a truncated portion 59 ending in a cylindrical portion 60.
- the truncated portion 59 comes into contact in 61 and 62 with the half-sphere to which it is adhesively secured.
- Each element 2 -2 is provided with a rolling ring 63 of plastic or rubber which is inserted and adhesively secured to portion around the periphery thereof.
- the thickened portions 64 of the bung-holes are formed during a compression step or they may be constituted by separate elements.
- the elements 2 -2 are provided with openings 65 which serve as a water outlet and also as gripping elements.
- a pressure container comprising a spherical body of plastic material having a substantially uniform wall thickness, and two end parts mounted in direct contact on said spherical body to substantially enclose the same, said two end parts having outer surfaces which define an elongated barrel shape for the container, said end parts having mating edges secured together along a great circle of the spherical body, each end part including an end cylindrical portion with an end flange disposed perpendicular to the axis of the cylindrical portion and defining an opening thereinto, a truncated cone portion extending in widening fashion from the cylindrical portion, said cone portion having an inner surface in direct engagement with the spherical body, and a second cylindrical portion extending from the cone portion and having one of said mating edges, said second cylindrical portion having an inner surface at said mating edge in direct engagement with the spherical body, the second cylindrical portion and the cone portion defining a hollow space with the spherical body, and annular rings on the second cylindrical portions of said end parts adjacent the junction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE638460 | 1963-10-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3393821A true US3393821A (en) | 1968-07-23 |
Family
ID=3845536
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US403258A Expired - Lifetime US3393821A (en) | 1963-10-10 | 1964-10-12 | Pressure container or barrel, more particularly beer barrel |
Country Status (2)
Country | Link |
---|---|
US (1) | US3393821A (de) |
LU (1) | LU47113A1 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4139115A (en) * | 1973-08-07 | 1979-02-13 | Imperial Chemical Industries Limited | Container with reinforcing frame |
US4209104A (en) * | 1977-04-13 | 1980-06-24 | Hedwin Corporation | Drum assemblies with preformed inserts |
US4391301A (en) * | 1981-08-27 | 1983-07-05 | A. O. Smith Corporation | Hole reinforcement |
US4779754A (en) * | 1987-07-15 | 1988-10-25 | Ecolab Inc. | Draining lid |
US20110204062A1 (en) * | 2008-08-20 | 2011-08-25 | Michael Christy | Pressure vessel |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1441674A (en) * | 1919-01-10 | 1923-01-09 | Hydraulic Pressed Steel Co | Sheet-metal barrel and method of making same |
US1909028A (en) * | 1931-07-15 | 1933-05-16 | Gusmer Inc A | Metallic shipping and storing vessel |
US2033268A (en) * | 1933-05-12 | 1936-03-10 | Murray Corp | Barrel |
US2250749A (en) * | 1939-04-06 | 1941-07-29 | Richard T Cornelius | Barrel |
US2519375A (en) * | 1946-02-16 | 1950-08-22 | Union Carbide & Carbon Corp | Method and apparatus for molding tubing |
US2620963A (en) * | 1944-03-18 | 1952-12-09 | Plastic Barrel Corp | Container |
US2744043A (en) * | 1950-01-23 | 1956-05-01 | Fels & Company | Method of producing pressure containers for fluids |
US2983403A (en) * | 1955-12-16 | 1961-05-09 | Mauser Kg | Container |
US3138507A (en) * | 1961-06-15 | 1964-06-23 | Structural Fibers | Fiber reinforced plastic articles and method of making the same |
US3181589A (en) * | 1963-03-07 | 1965-05-04 | Warren Petroleum Corp | Apparatus for the storage and burning of a fluid under pressure |
US3294271A (en) * | 1962-05-18 | 1966-12-27 | Armbruster Fritz | Plastic barrel |
-
1964
- 1964-10-09 LU LU47113A patent/LU47113A1/xx unknown
- 1964-10-12 US US403258A patent/US3393821A/en not_active Expired - Lifetime
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1441674A (en) * | 1919-01-10 | 1923-01-09 | Hydraulic Pressed Steel Co | Sheet-metal barrel and method of making same |
US1909028A (en) * | 1931-07-15 | 1933-05-16 | Gusmer Inc A | Metallic shipping and storing vessel |
US2033268A (en) * | 1933-05-12 | 1936-03-10 | Murray Corp | Barrel |
US2250749A (en) * | 1939-04-06 | 1941-07-29 | Richard T Cornelius | Barrel |
US2620963A (en) * | 1944-03-18 | 1952-12-09 | Plastic Barrel Corp | Container |
US2519375A (en) * | 1946-02-16 | 1950-08-22 | Union Carbide & Carbon Corp | Method and apparatus for molding tubing |
US2744043A (en) * | 1950-01-23 | 1956-05-01 | Fels & Company | Method of producing pressure containers for fluids |
US2983403A (en) * | 1955-12-16 | 1961-05-09 | Mauser Kg | Container |
US3138507A (en) * | 1961-06-15 | 1964-06-23 | Structural Fibers | Fiber reinforced plastic articles and method of making the same |
US3294271A (en) * | 1962-05-18 | 1966-12-27 | Armbruster Fritz | Plastic barrel |
US3181589A (en) * | 1963-03-07 | 1965-05-04 | Warren Petroleum Corp | Apparatus for the storage and burning of a fluid under pressure |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4139115A (en) * | 1973-08-07 | 1979-02-13 | Imperial Chemical Industries Limited | Container with reinforcing frame |
US4209104A (en) * | 1977-04-13 | 1980-06-24 | Hedwin Corporation | Drum assemblies with preformed inserts |
US4391301A (en) * | 1981-08-27 | 1983-07-05 | A. O. Smith Corporation | Hole reinforcement |
US4779754A (en) * | 1987-07-15 | 1988-10-25 | Ecolab Inc. | Draining lid |
US20110204062A1 (en) * | 2008-08-20 | 2011-08-25 | Michael Christy | Pressure vessel |
Also Published As
Publication number | Publication date |
---|---|
LU47113A1 (de) | 1964-12-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3294271A (en) | Plastic barrel | |
US5337909A (en) | Hot fill plastic container having a radial reinforcement rib | |
FI98905C (fi) | Metallitölkkirunko | |
CZ20023894A3 (cs) | Nádobka opatřená konstrukčními žebry | |
US4247012A (en) | Bottom structure for plastic container for pressurized fluids | |
US3985257A (en) | Blow molded industrial drum | |
US20050230435A1 (en) | Cask for drawing off liquids under the effect of pressure | |
FI66806C (fi) | Lock och lock/behaollare-kombination | |
US4313400A (en) | Lined metal tank with heat shield, indirect fired water heater and method of making same | |
US20150328825A1 (en) | Method for blow molding a hot-fill container with increased stretch ratios | |
EP2764967B1 (de) | Form zum Blasformen eines Heißfüllungsbehälters mit erhöhten Streckungsverhältnissen | |
CN101331451A (zh) | 面向性能的桶 | |
US2503339A (en) | Metallic beer barrel | |
US3912110A (en) | Apparatus for closing drums | |
US3341059A (en) | Thermoplastic container body | |
US3393821A (en) | Pressure container or barrel, more particularly beer barrel | |
US5881898A (en) | Open top drum having ribbed chime | |
US3437231A (en) | Precision threaded insert for plastic containers | |
US3170586A (en) | Single walled metal container | |
US3268109A (en) | Shipping container and method of manufacture thereof | |
US3419173A (en) | Pressure vessel made of plastic, especially a beer cask | |
US3552607A (en) | Pour-spout closure for plastic container | |
US1909028A (en) | Metallic shipping and storing vessel | |
JPH0199949A (ja) | 耐圧プラスチック容器 | |
US2124565A (en) | Liquid container |