US2505125A - Continuously operating kneader and mixer - Google Patents

Continuously operating kneader and mixer Download PDF

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Publication number
US2505125A
US2505125A US691574A US69157446A US2505125A US 2505125 A US2505125 A US 2505125A US 691574 A US691574 A US 691574A US 69157446 A US69157446 A US 69157446A US 2505125 A US2505125 A US 2505125A
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worm
mass
mixer
case
casing
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US691574A
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List Heinz
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
    • B29B7/422—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix with screw sections co-operating, e.g. intermeshing, with elements on the wall of the surrounding casing
    • B29B7/423—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix with screw sections co-operating, e.g. intermeshing, with elements on the wall of the surrounding casing and oscillating axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
    • B29B7/427—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix with independently driven screws rotating about the same axis, e.g. oscillating axially; with axially oscillating screws
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/68—Barrels or cylinders
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/68—Barrels or cylinders
    • B29C48/685—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
    • B29C48/687—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having projections with a short length in the barrel direction, e.g. pins
    • 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
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/45—Axially movable screws
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/52—Screws with an outer diameter varying along the longitudinal axis, e.g. for obtaining different thread clearance
    • B29C48/525—Conical screws

Definitions

  • the present invention serves for the purpose of eliminating such deficiency, and relates to a machine for carrying out continuous kneading and mixing operations, comprising (in contra-distinction to prior machines) only a single worm, special measures being taken, in view of the purpose aimed at, which shall be further described hereinafter.
  • Fig. 1 is a longitudinal section through a conical press-worm, constituting the first form of invention
  • Figs. 2 and 3 are longitudinal sections through a second form, showing two different operating positions
  • Fig. 4 shows, in a greater scale, a development of the worm according to Figs. 1 and 2, and
  • Fig. 5 is a longitudinal section through a third form of press-worm.
  • the worm of Fig. 1 is a conical press-worm of customary design, the case 2 of which, however, is provided with by-passes 3.
  • the worm I due to the pressure difierence between the worm threads, presses the mass to be kneaded through the by-passes 3, and the mass thus is repeatedly turned back into the Working cycle so as to ensure an intimate intermixing of all particles.
  • the form of invention according to Figs. 2 and 3 is a cylindrical worm, the body of which is provided with interrupted orv non-continuous threads for the purpose of forming individual worm wings.
  • the worm case 2 comprises an iii-- let port 3, and outlet port ii, and a plurality of tooth-like projections 5 integral with its inner wall.
  • the case 2 is so mounted as to permit of being axially reciprocated. Such latter movement may be brought about bymeans of a crank mechanism, as indicated in Figsj2 and 3.
  • Figs. 3 and 4 show the machine in its two terminal positions.
  • the case 2 has been displaced to the right.
  • the mass to be kneaded is fed or pressed into the machine through the inlet port 3 .by means of a device known per se.
  • a pressure isbeing exerted Onto the mass situated at the exit port of the case, thus ejecting the mass through the outlet port 4.
  • Such ejection or delivery suitably is assisted in that in the last couple of worm threads no gaps are provided so that these threads act as pistons in the case 2.
  • the mass at the inlet port 3 is moved or delivered into the working cycle, while the completely kneaded mass is ejected through the outlet port of case 2.
  • Fig. 5 shows a conical press worm, in which the case 2 also may be reciprocated.
  • the worm suitably is adapted in concave form, as shown.
  • the space referred to above is not being uniformly enlarged when displacing the case, as in the rectilineal design, but is enlarged toward the inlet port 3.
  • the pressure different between the worm threads thus is increased and the pushing back of the mass to be kneaded improved, as is the aim of the present invention.
  • a continuously operated kneader and mixer comprising a casing, a cylindrical worm member rotatable in said casing having interrupted worm threadsprojections on the inside surface of said casing for coacting with said interrupted worm threads, said casing being axially reciprocable with respect to said worm whereby a portion of a mass already mixed is returned into a less mixed mass for more complete mixing and kneading.
  • said worm member having a small area of uninterrupted threads adjacent the discharge end of said casing for expelling the mass of mixed and kneaded material therefrom.
  • a continuously operated kneader and mixer comprising a casing, a cylindrical worm member rotatable in said, casing having interrupted worm threads, projections on the inside surface of said casing for coacting with said interrupted worm threads, said casing and said worm member being relatively reciprocable with respect to one another whereby a portion of a mass already mixed is returned into a less mixed mass for more complete mixing and kneading.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Description

April 25, 1950 H. LIST 2,505,125
CONTINUOUSLY OPERATING KNEADER AND MIXER Filed Aug. 19, 1946 2 Sheets-Sheet 1 FIG] April 25, 1950 H. LIST 2,505,125
CONTINUOUSLY OPERATING KNEADER AND MIXER Filed Aug. 19, 1946 2 Sheets-Sheet 2 Patented Apr. 25, 1950 Heinz List, Pratteln, near Basel, Switzerland Application August 19, 1946, Serial No. 691,574 In Switzerland August 20, 1945 4 Claims. (01. 259-99) According to the present state of art, a continuously operating machine for kneading and mixing is available which works by means of two worms according to the principle of gear pumps. For many products, in particular rubber mixtures and plastic mixtures, such prior machine, however, does not afford a sufficient kneading action.
The present invention, now, serves for the purpose of eliminating such deficiency, and relates to a machine for carrying out continuous kneading and mixing operations, comprising (in contra-distinction to prior machines) only a single worm, special measures being taken, in view of the purpose aimed at, which shall be further described hereinafter.
Three forms of invention are illustrated in the accompanying drawing, in which:
Fig. 1 is a longitudinal section through a conical press-worm, constituting the first form of invention,
Figs. 2 and 3 are longitudinal sections through a second form, showing two different operating positions,
Fig. 4 shows, in a greater scale, a development of the worm according to Figs. 1 and 2, and
Fig. 5 is a longitudinal section through a third form of press-worm.
The worm of Fig. 1 is a conical press-worm of customary design, the case 2 of which, however, is provided with by-passes 3. In operation, the worm I, due to the pressure difierence between the worm threads, presses the mass to be kneaded through the by-passes 3, and the mass thus is repeatedly turned back into the Working cycle so as to ensure an intimate intermixing of all particles.
The form of invention according to Figs. 2 and 3 is a cylindrical worm, the body of which is provided with interrupted orv non-continuous threads for the purpose of forming individual worm wings. The worm case 2 comprises an iii-- let port 3, and outlet port ii, and a plurality of tooth-like projections 5 integral with its inner wall. The case 2 is so mounted as to permit of being axially reciprocated. Such latter movement may be brought about bymeans of a crank mechanism, as indicated in Figsj2 and 3. The
disposition of the snugs or nibs 5 on the inner wall of case 2, and that of the passages or gaps in the Worm threads is such that the reciprocating snugs 5 during the rotation of the worm I and the reciprocating movement of case 2 at corresponding speed repeatedly pass through the gaps in the worm threads. In Figfl such process worm wings or flanks; I designates the lefthand terminal position of the snugs 5, II the latters position at the moment of passage through the gaps in the worm body i, and III the righthand terminal position of the snugs 5. If desired, the case 2 also could be given a slight rocking or oscillating movement, aside of its longitudinal movement.
Figs. 3 and 4 show the machine in its two terminal positions. In Fig. 3, the case 2 has been displaced to the right. The mass to be kneaded is fed or pressed into the machine through the inlet port 3 .by means of a device known per se. During the movement of case 2 to the right, a pressure isbeing exerted Onto the mass situated at the exit port of the case, thus ejecting the mass through the outlet port 4. Such ejection or delivery suitably is assisted in that in the last couple of worm threads no gaps are provided so that these threads act as pistons in the case 2. When the case 2 is displaced to the left, the mass at the inlet port 3 is moved or delivered into the working cycle, while the completely kneaded mass is ejected through the outlet port of case 2.
Fig. 5 shows a conical press worm, in which the case 2 also may be reciprocated. When displacing the case toward the side of the outlet 4, a space is produced between the worm body I and the case 2, through which a portion of the mass is being pushed back due to the difference of pressure between the individual worm threads, improving the kneading action thereby.
In order to increase the pressure difierence between the Worm threads, the worm suitably is adapted in concave form, as shown. In such a design, the space referred to above is not being uniformly enlarged when displacing the case, as in the rectilineal design, but is enlarged toward the inlet port 3. The pressure different between the worm threads thus is increased and the pushing back of the mass to be kneaded improved, as is the aim of the present invention.
What I'claim and desire to secure by Letters Patent is:
1. A continuously operated kneader and mixer comprising a casing, a cylindrical worm member rotatable in said casing having interrupted worm threadsprojections on the inside surface of said casing for coacting with said interrupted worm threads, said casing being axially reciprocable with respect to said worm whereby a portion of a mass already mixed is returned into a less mixed mass for more complete mixing and kneading.
2. In a continuously operated kneader and is illustrated by means of a development of the mixer as claimed in claim 1, said worm member having a small area of uninterrupted threads adjacent the discharge end of said casing for expelling the mass of mixed and kneaded material therefrom.
3. A continuously operated kneader and mixer comprising a casing, a cylindrical worm member rotatable in said, casing having interrupted worm threads, projections on the inside surface of said casing for coacting with said interrupted worm threads, said casing and said worm member being relatively reciprocable with respect to one another whereby a portion of a mass already mixed is returned into a less mixed mass for more complete mixing and kneading.
4. A continuously operated kneader and mixer comprising a casing, a single worm member ro tatabie in said casing and means coacting with said single worm member to repeatedly return a portion of a mass to be kneaded on its Way through said casing back into the working cycle,
said worm member being cylindrical and having interrupted worm threads, said means comprising tooth-like projections integral with the inner wall of the worm casing, and the latter being axially reciprocable whereby the kneading action is improved by subjecting a portion of said mass to repeated kneading.
' HEINZ LIST.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 949,618 Bugg, .Jr Feb. 15, 1910 1,750,645 Ofienhauser Mar. 18, 1930 1,941,808 McConnaughay Jan. 2, 1934 2,020,878 Doering Nov. 12, 1935 20 2,159,670 Neitzke May 23, 1939
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Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2725815A (en) * 1950-12-08 1955-12-06 Mikrovaerk As Machines for tempering chocolate and similar masses
US2801237A (en) * 1952-10-15 1957-07-30 Rhodiaceta Continuous process for the esterification of cellulose in homogeneous phase
US2854445A (en) * 1952-10-15 1958-09-30 Rhodiaceta Continuous process for the esterification of cellulose in homogeneous phase
US3012763A (en) * 1958-05-16 1961-12-12 Barmart Mixing machine
US3044391A (en) * 1959-05-15 1962-07-17 Sperry Rand Corp Harvester
US3108530A (en) * 1960-06-06 1963-10-29 Int Basic Economy Corp Apparatus for the preparation of food compounds
US3191229A (en) * 1961-07-19 1965-06-29 Pirelli Apparatus for the continuous mixing of plastic material
US3254053A (en) * 1962-10-15 1966-05-31 Celanese Corp Trioxane polymerization process and apparatus
US3278987A (en) * 1963-04-01 1966-10-18 Bayer Ag Single-shaft screw extruder for plastics
US3323570A (en) * 1964-05-27 1967-06-06 Tullock Nigral Ray Plastic ingredients mixing and grinding attachment
US3459840A (en) * 1966-12-21 1969-08-05 Du Pont Process for melt extrusion of polyamide material
US3768171A (en) * 1971-08-16 1973-10-30 Us Rubber Reclaiming Co Inc Drying wet elastomeric material
US3771897A (en) * 1972-05-01 1973-11-13 Case Co J I Vibratory concrete placer
US4219316A (en) * 1978-06-05 1980-08-26 Feng Chung L Curved spiral pump
EP0032137A3 (en) * 1980-01-07 1982-01-20 Fonderie Et Ateliers Des Sablons Societe Anonyme Dite Agitator for homogenizing a mixture of products in a container
US4808367A (en) * 1984-09-25 1989-02-28 Mitsui Petrochemical Industries, Ltd. Process for preparation of a synthetic fiber bundle
BE1001595A3 (en) * 1988-05-03 1989-12-12 Cesar Michel Mixer and grinder for milk products such as ice cream - with slotted conical screw turning in conical vessel
US4896968A (en) * 1987-04-15 1990-01-30 Atlantic Richfield Company Cement storage and mixing system
US4981364A (en) * 1988-05-12 1991-01-01 Paul Geyer Extrusion apparatus
US6103290A (en) * 1996-07-18 2000-08-15 Wenger Manufacturing, Inc. Method of extrusion cooking an edible material
EP1118449A1 (en) * 2000-01-19 2001-07-25 Maag Pump Systems Textron AG Apparatus for feeding elastomeric materials and use of such apparatus
US20020153628A1 (en) * 2000-10-14 2002-10-24 Joerg Giesler System for delivering elastomeric media, use of the system as well as two operating methods
EP1118448A3 (en) * 2000-01-19 2003-05-02 Maag Pump Systems Textron AG Apparatus for feeding elastomeric materials and use of such apparatus
EP1118447A3 (en) * 2000-01-19 2003-05-02 Maag Pump Systems Textron AG Apparatus for feeding elastomeric materials and use of such apparatus
US20030112698A1 (en) * 2001-07-24 2003-06-19 Wenger Manufacturing, Inc. Twin screw extruder with conical non-parallel converging screws
US6589299B2 (en) 2001-02-13 2003-07-08 3M Innovative Properties Company Method for making electrode
US20040037160A1 (en) * 2002-08-23 2004-02-26 Randy Conner Injection/extruder screw
US20040043094A1 (en) * 2002-08-30 2004-03-04 Wengermanufacturing, Inc. Method and apparatus for extrusion of food products including back pressure valve/diverter
US20050069409A1 (en) * 2003-09-25 2005-03-31 Gurth Max I. Rotary disc pump
US6893151B2 (en) 2000-10-13 2005-05-17 Maag Pump Systems Textron Ag Device for conveying elastomeric media, use of the device, as well as two operating methods
US20060083105A1 (en) * 2004-10-15 2006-04-20 Husky Injection Molding Systems Ltd. Extruder Assembly
US20070104021A1 (en) * 2003-09-22 2007-05-10 Autonetworks Technologies, Ltd. Screw for plastication of resin material and a plasticizing mechanism
US20070183253A1 (en) * 2006-02-06 2007-08-09 Buss Ag Mixing and Kneading Machine
US20100284236A1 (en) * 2009-05-11 2010-11-11 Buss Ag Mixing and kneading machine for continual compounding and method of implementing continual compounding by means of a mixing and kneading machine
US20120232246A1 (en) * 2008-04-16 2012-09-13 Ticona Gmbh Oxymethylene Polymers, Process for the Preparation Thereof and Use Thereof
US20150367531A1 (en) * 2012-12-17 2015-12-24 B&P Process Equipment And Systems Llc Kneading method and apparatus
FR3114955A1 (en) 2020-10-12 2022-04-15 Vital Technics LARYNGOSCOPE BLADE OR LARYNGOSCOPE INTEGRATING THIS BLADE WITH SPECIFIC SHAPES FOR GUIDED ENDOTRACHEAL TUBE AND ASSOCIATED METHOD

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US949618A (en) * 1905-02-08 1910-02-15 Harry P Barr Machine for mixing and kneading dough or analogous material.
US1750645A (en) * 1928-07-05 1930-03-18 Offenhauser Christopher Cutting and mixing machine
US1941808A (en) * 1930-12-08 1934-01-02 Pre Cote Corp Emulsifier
US2020878A (en) * 1932-06-22 1935-11-12 Doering Charles Continuous butter churn
US2159670A (en) * 1937-04-29 1939-05-23 Bennett Inc Machine for mixing, homogenizing and dispersing purposes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US949618A (en) * 1905-02-08 1910-02-15 Harry P Barr Machine for mixing and kneading dough or analogous material.
US1750645A (en) * 1928-07-05 1930-03-18 Offenhauser Christopher Cutting and mixing machine
US1941808A (en) * 1930-12-08 1934-01-02 Pre Cote Corp Emulsifier
US2020878A (en) * 1932-06-22 1935-11-12 Doering Charles Continuous butter churn
US2159670A (en) * 1937-04-29 1939-05-23 Bennett Inc Machine for mixing, homogenizing and dispersing purposes

Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2725815A (en) * 1950-12-08 1955-12-06 Mikrovaerk As Machines for tempering chocolate and similar masses
US2801237A (en) * 1952-10-15 1957-07-30 Rhodiaceta Continuous process for the esterification of cellulose in homogeneous phase
US2854445A (en) * 1952-10-15 1958-09-30 Rhodiaceta Continuous process for the esterification of cellulose in homogeneous phase
US3012763A (en) * 1958-05-16 1961-12-12 Barmart Mixing machine
US3044391A (en) * 1959-05-15 1962-07-17 Sperry Rand Corp Harvester
US3108530A (en) * 1960-06-06 1963-10-29 Int Basic Economy Corp Apparatus for the preparation of food compounds
US3191229A (en) * 1961-07-19 1965-06-29 Pirelli Apparatus for the continuous mixing of plastic material
US3254053A (en) * 1962-10-15 1966-05-31 Celanese Corp Trioxane polymerization process and apparatus
US3278987A (en) * 1963-04-01 1966-10-18 Bayer Ag Single-shaft screw extruder for plastics
US3323570A (en) * 1964-05-27 1967-06-06 Tullock Nigral Ray Plastic ingredients mixing and grinding attachment
US3459840A (en) * 1966-12-21 1969-08-05 Du Pont Process for melt extrusion of polyamide material
US3768171A (en) * 1971-08-16 1973-10-30 Us Rubber Reclaiming Co Inc Drying wet elastomeric material
US3771897A (en) * 1972-05-01 1973-11-13 Case Co J I Vibratory concrete placer
US4219316A (en) * 1978-06-05 1980-08-26 Feng Chung L Curved spiral pump
EP0032137A3 (en) * 1980-01-07 1982-01-20 Fonderie Et Ateliers Des Sablons Societe Anonyme Dite Agitator for homogenizing a mixture of products in a container
US4808367A (en) * 1984-09-25 1989-02-28 Mitsui Petrochemical Industries, Ltd. Process for preparation of a synthetic fiber bundle
US4896968A (en) * 1987-04-15 1990-01-30 Atlantic Richfield Company Cement storage and mixing system
BE1001595A3 (en) * 1988-05-03 1989-12-12 Cesar Michel Mixer and grinder for milk products such as ice cream - with slotted conical screw turning in conical vessel
US4981364A (en) * 1988-05-12 1991-01-01 Paul Geyer Extrusion apparatus
US6103290A (en) * 1996-07-18 2000-08-15 Wenger Manufacturing, Inc. Method of extrusion cooking an edible material
EP1118448A3 (en) * 2000-01-19 2003-05-02 Maag Pump Systems Textron AG Apparatus for feeding elastomeric materials and use of such apparatus
EP1118449A1 (en) * 2000-01-19 2001-07-25 Maag Pump Systems Textron AG Apparatus for feeding elastomeric materials and use of such apparatus
EP1118447A3 (en) * 2000-01-19 2003-05-02 Maag Pump Systems Textron AG Apparatus for feeding elastomeric materials and use of such apparatus
US6893151B2 (en) 2000-10-13 2005-05-17 Maag Pump Systems Textron Ag Device for conveying elastomeric media, use of the device, as well as two operating methods
US20020153628A1 (en) * 2000-10-14 2002-10-24 Joerg Giesler System for delivering elastomeric media, use of the system as well as two operating methods
US6589299B2 (en) 2001-02-13 2003-07-08 3M Innovative Properties Company Method for making electrode
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