US2717147A - Mixing machines for making concrete or the like - Google Patents
Mixing machines for making concrete or the like Download PDFInfo
- Publication number
- US2717147A US2717147A US305243A US30524352A US2717147A US 2717147 A US2717147 A US 2717147A US 305243 A US305243 A US 305243A US 30524352 A US30524352 A US 30524352A US 2717147 A US2717147 A US 2717147A
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- US
- United States
- Prior art keywords
- wall
- tank
- mixing
- gearing
- prime mover
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/10—Mixing in containers not actuated to effect the mixing
- B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
- B28C5/16—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a vertical or steeply inclined axis
- B28C5/163—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a vertical or steeply inclined axis in annularly-shaped containers
- B28C5/165—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a vertical or steeply inclined axis in annularly-shaped containers with stirrers having planetary motion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/805—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis wherein the stirrers or the receptacles are moved in order to bring them into operative position; Means for fixing the receptacle
- B01F27/806—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis wherein the stirrers or the receptacles are moved in order to bring them into operative position; Means for fixing the receptacle with vertical displacement of the stirrer, e.g. in combination with means for pivoting the stirrer about a vertical axis in order to co-operate with different receptacles
Definitions
- This invention relates to a concrete, mortar or like mixing machine.
- the main object of the invention is to provide a mixing machine in which there is no driving machinery or transmission gearing exposed to dirt and sludge, thereby eliminating the severe wear which'commonly occurs with this kind of machine.
- a further object is to provide a compact construction which is conveniently hoistable', whe reby the materials to be mixed can be placed in themachine whenthe latter is on the ground,the mixed material being discharged directly from the machine by gravity when the machine has been ho'isted, e ven while the mixing operation is-still proceeding.
- the mixing machine ineludes an annular tank which is open at the .top and has, bounded (at least in part) by its inner wall, a closed space containing a prime mover which drives, through gearing if necessary, a vertical shaft sealingly extending through the top wall of the closed space, the shaft driving mixing devices which extend downwardly into the annular tank.
- the shaft supports and drives an inverted cup-like casing surrounding the upper part of the closed space, the casing carrying arms from which the actual mixing devices are supported.
- the prime mover can be an electric motor driving step-down gearing in the said upper part of the closed space, which upper part partly overlaps the radially inner portion of the annular tank.
- Figure 1 is a sectional elevation of one form of concrete mixer according to the invention, the section being taken on the line 11 of Figure 2, and
- Figure 2 is a sectional plan taken on the line 2-2 of Figure l.
- the drawings show a stationary annular tank 11 bounded by outer and inner walls 12, 13 and having a replaceable liner 14 at the bottom, the whole being fast with a base plate 15.
- the inner wall 13 forms the boundary, with the base wall 15 and an upper wall 17, of a closed space which houses a prime mover, shown in the present instance as consisting of an electric motor 18.
- the upper wall 17 forms with a cylinder 20 and a top wall 21 another closed space 22 which, it will be observed, is above the annular trough 11 and overlaps the radially-inner edge thereof, i. e., the inner wall 13.
- a reduction gear train 24 driving to a vertical shaft 25 which extends sealingly through the top wall 21, the vertical shaft being journalled thereby.
- the ma- Fast with the vertical shaft 25 is an inverted cup-like casing 27 enclosing the upper space 22 and carrying arms 28. These arms are supporting the actual mixing devices which may be arranged in any desirable way without affecting the idea of the invention. Two such arms 28 are shown, but obviously there may be more than two.
- the actual mixing devices are shown as including "paddles or blades'30 supported on one arm 31 fromthe arm and on the other arm by an auxiliary arm 32 horizontally fitted on a vertical shaft 33 which is separately rotated in an opposite direction to the rotation of the shaft 25 by means of a chain gear 34 driven by the rotation of the auxiliary arm 32 and its vertical shaft 33 around the shaft 25 and the enclosed space.
- the mixing machine when the mixing machine is on the ground, the concrete, mortar or other materials to be mixed can be poured into it and'mixing will begin as soon as the electric motor is started. It should be noted that the motor and the step-down gearing 24 are entirely enclosed and are thus kept free of contact with the materials.
- the external wall 12 of the annular trough carries upper and lower frame-works 35.
- Each of these frame-works is provided, on each of a pair of opposite sides, with rollers 36 journalled about parallel'horizontal axes.
- the rollers are adapted to be guided by vertical rails 38 of a supporting structure 39 chine is lifted in order to allow of the mixed contents of the annular trough being discharged by gravity, as by means of at least one opening 40 in the lining 14 which is closable by a member 41 controlled by a journalled shaft 42 and an actuating handle 43.
- the electric motor can continue to be operated, thus facilitating the complete discharge of the mixed material.
- a hoisting winch 45 is mounted freely on the upper end of the shaft 25, the upper extremity thereof having a swivelled engagement, indicated at 44, with a hoisting sheave 46.
- This is connected by a cable 47, in a usual Way, with a sheave 48 on the supporting structure 39, the cable being led from the two sheaves to the hoisting winch by way of a pulley 49 supported from the upper frame-work 35 by uprights 50.
- a brake may be provided for holding the machine when hoisted, and for lowering it slowly when the motor is de-energised or the winch is declutched.
- a mixing machine for concrete or the like comprising an annular tank having an open top and having an inner annular wall, an outer wall and a base plate closing the bottom of the tank, mixing devices in the tank, a prime mover, gearing driven by said prime mover, a housing completely enclosing said prime mover and isolating it from the contents of the tank and comprising a portion of said base plate, said inner wall and an upper wall mounted on said inner Wall, a casing completely enclosing said gearing and comprising a side wall and a top wall, the upper wall of said housing forming the bottom of said casing, and means connecting said gearing to said mixing devices for operating said mixing devices.
- a mixing machine for concrete or the like comprising an annular tank having an open top and having an inner annular wall, an outer wall and a base plate closing the bottom of the tank, mixing devices in the tank, a prime mover, gearing driven by said prime mover, a housing completely enclosing said prime mover and isolating it from the contents of the tank and comprising a portion of said base plate, said inner wall and an upper by resilient fingers wall mounted on said inner wall, a casing ,completely enclosing said gearing and comprising a side wall and a wall of said housing forming the bota 'shaft connected to -and:'driven by top wall, the upper tom of: said easing;
- said gearing and extending through and outwardly of: saidtop wallandsealingly journalled therein, an inverted) cup-like member fast- 'on the outwardly extended. portion of said shaft and rotated thereby, means -onsaid member for: supporting-said mixing: devices and. revolving them therewith'around 'said housing, and means forrotating at. least oneof said mixingdevices-With respect to said memher and comprising a chain' gear enclosed by said.
- a housing completely; enclosing rsaid prime mover: and: isolatinglit from the: con-tentsof -th'e-' tank and comprising:
- top wall, the upperwall of said housing forming the bottom of saidcasing, a shaftconnected to and driven: by-said gearing and extending; through'and outwardlyofl said top: walland sealingly journalledtherein, an inverted: cup-like member fast on the outwardly extended portion:
- a mixing machine for concrete or the like comprising an annular-tank-having an open top; andrhaving, an
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Description
Sept. 6, 1955 E. v. FEJMERT ETAL 2,
MIXING MACHINES FOR MAKING CONCRETE OR THE LIKE Filed Aug. 19, 1952 2 Sheets-Sheet l p 6, 1955 E. v. FEJMERT EIAL 2,717,147
MIXING MACHINES FOR MAKING CONCRETE OR THE LIKE Filed Aug. 19, 1952 2 Sheets-Sheet 2 yawn/0r:
i d w. P t n MIXING MACHINES FOR CONCRETE OR THE LIKE I Erik' valdemar Fejmert and Bernhard Valdemar Fejmert,
Nykoping, Sweden; said Bernhard Valdemar Fejmert' assignor to said Erik Valdemar Fejmert Application August 19, 1952, Serial No. 305,243 Claims priority, application Sweden August 31, 1951 4 Claims. (0. 259'178) This invention relates to a concrete, mortar or like mixing machine.
The main object of the invention is to provide a mixing machine in which there is no driving machinery or transmission gearing exposed to dirt and sludge, thereby eliminating the severe wear which'commonly occurs with this kind of machine.
A further object is to provide a compact construction which is conveniently hoistable', whe reby the materials to be mixed can be placed in themachine whenthe latter is on the ground,the mixed material being discharged directly from the machine by gravity when the machine has been ho'isted, e ven while the mixing operation is-still proceeding.
Accordingto the invention, the mixing machine ineludes an annular tank which is open at the .top and has, bounded (at least in part) by its inner wall, a closed space containing a prime mover which drives, through gearing if necessary, a vertical shaft sealingly extending through the top wall of the closed space, the shaft driving mixing devices which extend downwardly into the annular tank.
Preferably the shaft supports and drives an inverted cup-like casing surrounding the upper part of the closed space, the casing carrying arms from which the actual mixing devices are supported. The prime mover can be an electric motor driving step-down gearing in the said upper part of the closed space, which upper part partly overlaps the radially inner portion of the annular tank.
It is possible for such a machine to be mounted for vertical movement in a supporting structure (which latter may itself be adapted to be transported to a desired site), the annular tank having one or more closable openings in its lower wall through which the mixed material can be discharged by gravity while the machine is raised. Obviously the machine can be hoisted by any kind of hoisting winch without using any supporting structure.
In the accompanying drawings:
Figure 1 is a sectional elevation of one form of concrete mixer according to the invention, the section being taken on the line 11 of Figure 2, and
Figure 2 is a sectional plan taken on the line 2-2 of Figure l.
The drawings show a stationary annular tank 11 bounded by outer and inner walls 12, 13 and having a replaceable liner 14 at the bottom, the whole being fast with a base plate 15. The inner wall 13 forms the boundary, with the base wall 15 and an upper wall 17, of a closed space which houses a prime mover, shown in the present instance as consisting of an electric motor 18.
The upper wall 17 forms with a cylinder 20 and a top wall 21 another closed space 22 which, it will be observed, is above the annular trough 11 and overlaps the radially-inner edge thereof, i. e., the inner wall 13.
.Mounted in this upper closed space 22 is a reduction gear train 24 driving to a vertical shaft 25 which extends sealingly through the top wall 21, the vertical shaft being journalled thereby.
when'the machine is being lifted or lowered. The ma- Fast with the vertical shaft 25 is an inverted cup-like casing 27 enclosing the upper space 22 and carrying arms 28. These arms are supporting the actual mixing devices which may be arranged in any desirable way without affecting the idea of the invention. Two such arms 28 are shown, but obviously there may be more than two. The actual mixing devices are shown as including "paddles or blades'30 supported on one arm 31 fromthe arm and on the other arm by an auxiliary arm 32 horizontally fitted on a vertical shaft 33 which is separately rotated in an opposite direction to the rotation of the shaft 25 by means of a chain gear 34 driven by the rotation of the auxiliary arm 32 and its vertical shaft 33 around the shaft 25 and the enclosed space.
Thus, when the mixing machine is on the ground, the concrete, mortar or other materials to be mixed can be poured into it and'mixing will begin as soon as the electric motor is started. It should be noted that the motor and the step-down gearing 24 are entirely enclosed and are thus kept free of contact with the materials.
In the present instance, the external wall 12 of the annular trough carries upper and lower frame-works 35. Each of these frame-works is provided, on each of a pair of opposite sides, with rollers 36 journalled about parallel'horizontal axes. The rollers are adapted to be guided by vertical rails 38 of a supporting structure 39 chine is lifted in order to allow of the mixed contents of the annular trough being discharged by gravity, as by means of at least one opening 40 in the lining 14 which is closable by a member 41 controlled by a journalled shaft 42 and an actuating handle 43. During discharge the electric motor can continue to be operated, thus facilitating the complete discharge of the mixed material.
Any desired means may be provided for hoisting the machine. In the construction shown a hoisting winch 45 is mounted freely on the upper end of the shaft 25, the upper extremity thereof having a swivelled engagement, indicated at 44, with a hoisting sheave 46. This is connected by a cable 47, in a usual Way, with a sheave 48 on the supporting structure 39, the cable being led from the two sheaves to the hoisting winch by way of a pulley 49 supported from the upper frame-work 35 by uprights 50.
'Thus, to elfect hoisting of the mixing machine, it is only necessary to engage a clutch (not shown) for the winch 45. As is usual in an apparatus of this kind, a brake may be provided for holding the machine when hoisted, and for lowering it slowly when the motor is de-energised or the winch is declutched.
What we claim is:
1. A mixing machine for concrete or the like comprising an annular tank having an open top and having an inner annular wall, an outer wall and a base plate closing the bottom of the tank, mixing devices in the tank, a prime mover, gearing driven by said prime mover, a housing completely enclosing said prime mover and isolating it from the contents of the tank and comprising a portion of said base plate, said inner wall and an upper wall mounted on said inner Wall, a casing completely enclosing said gearing and comprising a side wall and a top wall, the upper wall of said housing forming the bottom of said casing, and means connecting said gearing to said mixing devices for operating said mixing devices.
2. A mixing machine for concrete or the like comprising an annular tank having an open top and having an inner annular wall, an outer wall and a base plate closing the bottom of the tank, mixing devices in the tank, a prime mover, gearing driven by said prime mover, a housing completely enclosing said prime mover and isolating it from the contents of the tank and comprising a portion of said base plate, said inner wall and an upper by resilient fingers wall mounted on said inner wall, a casing ,completely enclosing said gearing and comprising a side wall and a wall of said housing forming the bota 'shaft connected to -and:'driven by top wall, the upper tom of: said easing;
said gearing; and extending through and outwardly of: saidtop wallandsealingly journalled therein, an inverted) cup-like member fast- 'on the outwardly extended. portion of said shaft and rotated thereby, means -onsaid member for: supporting-said mixing: devices and. revolving them therewith'around 'said housing, and means forrotating at. least oneof said mixingdevices-With respect to said memher and comprising a chain' gear enclosed by said.
member:
3. A mixing machine for concrete or the: liken-com prising an annular tank havingan open-top and having. an inner annular wall; an outer Wall 'and abase' plate: closing the bottom of.the" tank, .mixinggdevices in the" tank, a 'prime mover, gearing driven byrsaid prime mover,
a housing; completely; enclosing rsaid prime mover: and: isolatinglit from the: con-tentsof -th'e-' tank and comprising:
a portion: of saidbase plate, said inner wall and an upper wall: mounted on-said inner wall;v a casing completely. enclosing said gearing, and comprising 'a side wall and a.
top wall, the upperwall of said housing: forming the bottom of saidcasing, a shaftconnected to and driven: by-said gearing and extending; through'and outwardlyofl said top: walland sealingly journalledtherein, an inverted: cup-like member fast on the outwardly extended portion:
of said shaft and rotated thereby, means'on said member for supporting said mixing; devices andrevolving'them therewith around said'housing, means for. rotating at. least one of said mixingidevices-with respect to said member and comprising a chain gear enclosed'by said member, a stationary framework, means guiding. said' tank for vertical movement in said framework a hoisting cable carried by said framework and connected to said tank, means driven by said shaft for operating said cable to raise said tank, and a closure controlled discharge outlet in the base plate of saidetank through which the contents of the tank can be discharged when the tank is raisedi.
4. A mixing machine for concrete or the like comprising an annular-tank-having an open top; andrhaving, an
inner annularwall; anlouterrwall and a .base plateclosing the bottom of the tank, mixing devices inthe tank' a prime mover, gearing driven by said prime mover, a housing completelyenclosing'said prime mover and isolating it fromwthe contents of-.the:tankandflcornprising said inner wall and an upper wall mounted on said inner wall, a casing completely enclosing said gearing and comprising a side wall and a top wall, the upper wall of said? housinggformingt the bottom: of--. said:vcasing-,-r, and
means connecting said gearing to said mixing devices ifors operating; said.-mixingidevices.-.
l References-gated im-thefileoflthispatent,
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE2717147X | 1951-08-31 |
Publications (1)
Publication Number | Publication Date |
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US2717147A true US2717147A (en) | 1955-09-06 |
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ID=20427057
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US305243A Expired - Lifetime US2717147A (en) | 1951-08-31 | 1952-08-19 | Mixing machines for making concrete or the like |
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2867378A (en) * | 1954-09-16 | 1959-01-06 | Int Combustion Holdings Ltd | Centrifuging machines |
US3061283A (en) * | 1958-01-09 | 1962-10-30 | Int Baumaschinenfabrik Ag | Mixing apparatus for concrete or the like |
US3066919A (en) * | 1958-11-12 | 1962-12-04 | Waimer Eberhard | Concrete mixer |
US3140996A (en) * | 1960-07-01 | 1964-07-14 | Dorr Oliver Inc | Sediment conveying apparatus for settling tanks |
US3663120A (en) * | 1970-07-02 | 1972-05-16 | Fargo Machine & Tool Co | Plow tool |
US4165185A (en) * | 1977-02-17 | 1979-08-21 | Fejmert Bernhard V | Mixer, preferably for the mixing of concrete |
US4191478A (en) * | 1977-02-07 | 1980-03-04 | Franc Zupancic | Mixing apparatus for concrete or other bulk material |
US4453831A (en) * | 1982-06-04 | 1984-06-12 | Societe Anonyme Couvrot Laine & Cie | Mixer with a fixed drum |
US4711582A (en) * | 1986-11-07 | 1987-12-08 | Kennedy Richard B | Rotary mixing of two component resins in disposable plastic bag |
EP0508962A1 (en) * | 1991-04-09 | 1992-10-14 | OFFICINE PICCINI S.p.A. | Reduction unit for mixing machines of the crown wheel type |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE263154C (en) * | ||||
AT20594B (en) * | 1904-06-21 | 1905-07-10 | Ferdinand Opitz | Machine for simultaneous dust-free shredding, mixing and sieving of powder, chemicals etc. like |
US1051003A (en) * | 1908-03-03 | 1913-01-21 | George A Peterson | Concrete-mixing machine. |
US1782245A (en) * | 1929-10-01 | 1930-11-18 | Frederic W Parkhill | Interchangeable appliance for mixing, beating, etc. |
US2345163A (en) * | 1939-11-30 | 1944-03-28 | Vollrath Paul | Apparatus for mixing, sifting, and kneading |
US2576180A (en) * | 1949-01-29 | 1951-11-27 | Herbert S Simpson | Mixer |
-
1952
- 1952-08-19 US US305243A patent/US2717147A/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE263154C (en) * | ||||
AT20594B (en) * | 1904-06-21 | 1905-07-10 | Ferdinand Opitz | Machine for simultaneous dust-free shredding, mixing and sieving of powder, chemicals etc. like |
US1051003A (en) * | 1908-03-03 | 1913-01-21 | George A Peterson | Concrete-mixing machine. |
US1782245A (en) * | 1929-10-01 | 1930-11-18 | Frederic W Parkhill | Interchangeable appliance for mixing, beating, etc. |
US2345163A (en) * | 1939-11-30 | 1944-03-28 | Vollrath Paul | Apparatus for mixing, sifting, and kneading |
US2576180A (en) * | 1949-01-29 | 1951-11-27 | Herbert S Simpson | Mixer |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2867378A (en) * | 1954-09-16 | 1959-01-06 | Int Combustion Holdings Ltd | Centrifuging machines |
US3061283A (en) * | 1958-01-09 | 1962-10-30 | Int Baumaschinenfabrik Ag | Mixing apparatus for concrete or the like |
US3066919A (en) * | 1958-11-12 | 1962-12-04 | Waimer Eberhard | Concrete mixer |
US3140996A (en) * | 1960-07-01 | 1964-07-14 | Dorr Oliver Inc | Sediment conveying apparatus for settling tanks |
US3663120A (en) * | 1970-07-02 | 1972-05-16 | Fargo Machine & Tool Co | Plow tool |
US4191478A (en) * | 1977-02-07 | 1980-03-04 | Franc Zupancic | Mixing apparatus for concrete or other bulk material |
US4165185A (en) * | 1977-02-17 | 1979-08-21 | Fejmert Bernhard V | Mixer, preferably for the mixing of concrete |
US4453831A (en) * | 1982-06-04 | 1984-06-12 | Societe Anonyme Couvrot Laine & Cie | Mixer with a fixed drum |
US4711582A (en) * | 1986-11-07 | 1987-12-08 | Kennedy Richard B | Rotary mixing of two component resins in disposable plastic bag |
EP0508962A1 (en) * | 1991-04-09 | 1992-10-14 | OFFICINE PICCINI S.p.A. | Reduction unit for mixing machines of the crown wheel type |
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