US3399466A - Sand hopper - Google Patents

Sand hopper Download PDF

Info

Publication number
US3399466A
US3399466A US647794A US64779467A US3399466A US 3399466 A US3399466 A US 3399466A US 647794 A US647794 A US 647794A US 64779467 A US64779467 A US 64779467A US 3399466 A US3399466 A US 3399466A
Authority
US
United States
Prior art keywords
hopper
sand
conveyor
side walls
belt
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
Application number
US647794A
Inventor
Hartley Nelson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hartley Controls Corp
Original Assignee
Hartley Controls Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hartley Controls Corp filed Critical Hartley Controls Corp
Priority to US647794A priority Critical patent/US3399466A/en
Application granted granted Critical
Publication of US3399466A publication Critical patent/US3399466A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D88/00Large containers
    • B65D88/74Large containers having means for heating, cooling, aerating or other conditioning of contents
    • B65D88/744Large containers having means for heating, cooling, aerating or other conditioning of contents heating or cooling through the walls or internal parts of the container, e.g. circulation of fluid inside the walls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G21/00Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors
    • B65G21/20Means incorporated in, or attached to, framework or housings for guiding load-carriers, traction elements or loads supported on moving surfaces
    • B65G21/2045Mechanical means for guiding or retaining the load on the load-carrying surface
    • B65G21/2063Mechanical means for guiding or retaining the load on the load-carrying surface comprising elements not movable in the direction of load-transport
    • B65G21/2072Laterial guidance means
    • B65G21/2081Laterial guidance means for bulk material, e.g. skirts

Definitions

  • ABSTRACT OF THE DISCLOSURE Disclosed herein is a sand hopper having an inverted V-type flow baflle in the bottom of the hopper to define two diverging discharge slots located above a continuously movable conveyor with ventilating means to remove heat from the space beneath the baffle.
  • This invention relates to hoppers for granular material such as those which are used as reservoirs for molding sand and more specifically to an improvement in the discharging of sand from the hopper.
  • Sand hoppers of the present type are used to collect sand as its returns for reuse from the shake out apparatus in a foundry.
  • the sand is typically discharged from the hopper onto a moving conveyor which carries it back to the foundry for reuse. Some of this sand, as it is discharged from the shake out apparatus, is quite hot, while other portions of the sand will be cool with varying degrees of moisture present in the sand in the hopper. If the sand remains stationary in the hopper for any period of time it will have a tendency to become incrusted in the discharge openings ofthe hopper due partly to the influence of the high temperature of the sand and moisture present in the sand.
  • the discharge opening in the mouth of the hopper is designed to provide a continuous flow of sand along the length of the hopper as it flows onto the conveyor. Moreover, build up of heat at the hopper mouth is prevented. This is accomplished by positioning a baflie means in the mouth of the sand hopper in spaced relation to a conveyor belt which moves under the hopper mouth.
  • the hopper mouth is wider at the downstream end of the belt than at the upstream end producing a diverging type opening along the path of the conveyor.
  • the outer edges of the baflle are located in a parallel, spaced relation to the side walls of the hopper forming narrow discharge slots along each side of the hopper.
  • FIG. 1 is a perspective view of the sand hopper showing the baflle in phantom.
  • FIG. 2 is a cross-sectional view of the hopper ⁇
  • FIG. 3 is a sectional view taken on line 3-3 of FIG. 1.
  • FIG. 4 is a sectional view taken on line 44 of FIG. 3.
  • FIG. 5 is a sectional view taken on line 5-5 of FIG. 2.
  • hopper 10 for granular material such as sand is shown positioned over a belt-type conveyor 12.
  • the side walls 14 of the hopper flare upward and outward from the conveyor with the rearwall 16 and frontwall 18 positioned in aparallel relation to each other.
  • the hopper is suspended over the conveyor in a conventional manner and requires no further explanation.
  • a typical foundary hopper may contain as much as two hundred tons of sand.
  • An adjustable leveling and discharge flow control gate 28 is provided at the downstream end of the hopper 10.
  • gate 28 is controlled by electric or fluid motors. Solely for purposes of exemplification, gate 28 is shown herein as slidably mounted on angle iron 30 secured to the top of support brackets 26. The gate controls the thickness of the layer of sand 32 on the conveyor belt 34. In the illustrated embodiment the gate is adjusted by loosening bolt 36 and ra sing or lowering the gate by flange 40*.
  • a flexible belt seal 45 is also secured to the back wall of the hopper by bolts 47.
  • a baflie means 50 preferably of an inverted V-type is positioned in the lower portion of the hopper with its ends secured to the front and rear walls.
  • the outer edges 52 of the side walls 54 of the baffle are located in a parallel, spaced relation to the side walls of the hopper to form long narrow discharge slots 56 (FIG. 3) along each side of the hopper.
  • slots 56 are about 14 inches wide.
  • the sand which flows past the discharge slots will flow laterally to bridge and fill the space 58 in the hopper beneath the baflle. As soon as this space fills with sand the flow through the slots will stop and only the weight of the sand in this space will bear on the belt. As sand is removed from this space by the belt it will be replaced by sand flowing through the discharge slots.
  • the slope of the side walls of the baffle should be selected to assure that sand will slide down the side wall.
  • Strips b, g will pass under the center section while strips 0, 1 will pass under the rear sections.
  • Strips d, e pass through the full length of the hopper. This constant movement of unloaded strips or zones of the belt along the full length of the walls moves the sand away from the side walls 14 to continuously open the space near the side walls that is continuously filled by sand flowing down the side wall through the slots 56.
  • the sand is cooled by means of natural or forced circulation of air through the space beneath the bafile 54.
  • Aperture 62 in front wall 18 and aperture 64 in the rear wall 16 are aligned with the cavity 66 immediately beneath the bafile.
  • a fan 60 may optionally be mounted to force air through this space. This circulation of air reduces the temperature of the sand and prevents build up and entrapment of heat, thus to remove one of the chief causes of encrustation of the sand on the side walls and on the bafile.
  • a hopper for granular material having end walls and downwardly converging side walls and a conveyor positioned to move under the hopper, of means for controlling the flow of sand from the hopper comprising:
  • baflle means positioned within said hopper in upwardly spaced relation to said conveyor
  • bafile having edges generally extending along and spaced from the side walls of the hopper to form discharge slots along both sides of the hopper, the end wall of the hopper upstream of the conveyor being narrower than the end wall of the hopper downstream of the conveyor,
  • a hopper arrangement for feeding a layer of granulat material onto a continuously moving belt comprismg:
  • a hopper having upwardly and outwardly flared side walls
  • baffle means positioned in the hopper in a spaced relation to the conveyor means
  • said batfie means being located in a spaced relation to said side walls to define two diverging discharge slots
  • baflle means for circulating air through the space beneath the baflle means to cool the granular material as it flows over the baffle means.
  • baflle means comprises an inverted V-shaped baflle having downwardly and outwardly directed side walls.
  • a sand hopper for molding sand comprising:
  • a hopper having upwardly diverging side walls
  • said hopper side walls also diverging from upstream to downstream and forming a tapered discharge opencontinuously movable conveyor means positioned below said hopper,
  • bafile positioned across said opening and having edges spaced from the walls of said hopper
  • cooling means to remove heat from the vicinity of the bafile.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Description

P 3,1968 N. HARTLEY 3,399,466
SAND HOPPER Filed June 21, 1967 2 Sheets-Sheet 1 mvewroia N54 .50 A/ HRETLE 14%, AM, H0w Chum Sept. 3, 1968 N. HARTLEY 3,399,466
SAND HOPPER Filed June 21, 1967 2 Sheets-Sheet Z /5 F 3 ,,...w Jim? z A4 ,,II-'"" "#1,, E 3 O NEL$ON Hnerzsv INVENTO 2 ATTOR NEWS United States Patent 3,399,466 SAND HOPPER Nelson Hartley, Towson, Md., assignor to Hartley Controls Corporation, Neenah, Wis., a corporation of Wisconsin Filed June 21, 1967, Ser. No. 647,794 7 Claims. (Cl. 34-167) ABSTRACT OF THE DISCLOSURE Disclosed herein is a sand hopper having an inverted V-type flow baflle in the bottom of the hopper to define two diverging discharge slots located above a continuously movable conveyor with ventilating means to remove heat from the space beneath the baffle.
Background of the invention This invention relates to hoppers for granular material such as those which are used as reservoirs for molding sand and more specifically to an improvement in the discharging of sand from the hopper.
Sand hoppers of the present type are used to collect sand as its returns for reuse from the shake out apparatus in a foundry. The sand is typically discharged from the hopper onto a moving conveyor which carries it back to the foundry for reuse. Some of this sand, as it is discharged from the shake out apparatus, is quite hot, while other portions of the sand will be cool with varying degrees of moisture present in the sand in the hopper. If the sand remains stationary in the hopper for any period of time it will have a tendency to become incrusted in the discharge openings ofthe hopper due partly to the influence of the high temperature of the sand and moisture present in the sand. It has been found in sand hoppers presently being used, that the discharge openings have poor flow patterns resulting in a build up of sand which then becomes incrusted in the opening and eventually clogging the opening. When this happens the hopper and its belt must be taken out of service until the incrusted sand is removed from the hopper. This may take four or five hours.
Summary of the invention In the sand hopper of the present invention the discharge opening in the mouth of the hopper is designed to provide a continuous flow of sand along the length of the hopper as it flows onto the conveyor. Moreover, build up of heat at the hopper mouth is prevented. This is accomplished by positioning a baflie means in the mouth of the sand hopper in spaced relation to a conveyor belt which moves under the hopper mouth. The hopper mouth is wider at the downstream end of the belt than at the upstream end producing a diverging type opening along the path of the conveyor. The outer edges of the baflle are located in a parallel, spaced relation to the side walls of the hopper forming narrow discharge slots along each side of the hopper. With this arrangement unloaded portions of the conveyor belt will pass beneath a greater area of the hopper mouth assuring removal of sand from the entire area beneath tthe discharge slots. The space under the bafile is exposed to the atmosphere to permit air to circulate under the baflie to reduce the temperature of the sand as it passes through the openings and preclude heat build up in the hopper.
Other advantages and objects of the present invention will become apparent from the following detailed description when read in conjunction with the enclosed drawings, in which:
FIG. 1 is a perspective view of the sand hopper showing the baflle in phantom.
Patented Sept. 3, 1968 FIG. 2 is a cross-sectional view of the hopper} FIG. 3 is a sectional view taken on line 3-3 of FIG. 1.
FIG. 4 is a sectional view taken on line 44 of FIG. 3.
FIG. 5 is a sectional view taken on line 5-5 of FIG. 2.
Referring more particularly to FIG. 1 of the drawings, hopper 10 for granular material such as sand is shown positioned over a belt-type conveyor 12. The side walls 14 of the hopper flare upward and outward from the conveyor with the rearwall 16 and frontwall 18 positioned in aparallel relation to each other. The hopper is suspended over the conveyor in a conventional manner and requires no further explanation. A typical foundary hopper may contain as much as two hundred tons of sand.
The space between the lower edges of the side walls and the conveyor belt is closed by means of flexible belt seals 20 clamped on support brackets 26 which are welded to the lower edges of the side walls. A flat plate 21 is positioned on the outside of the seal and nuts 22 and bolts 24 are used to draw the plate tightly against the pad. Referring to FIG. 2 it will be noted that the seals are positioned to slide on the surface of the conveyor to prevent any sand from flowing laterally out of the hopper mouth and onto the conveyor belt.
An adjustable leveling and discharge flow control gate 28 is provided at the downstream end of the hopper 10. In some commercial installations gate 28 is controlled by electric or fluid motors. Solely for purposes of exemplification, gate 28 is shown herein as slidably mounted on angle iron 30 secured to the top of support brackets 26. The gate controls the thickness of the layer of sand 32 on the conveyor belt 34. In the illustrated embodiment the gate is adjusted by loosening bolt 36 and ra sing or lowering the gate by flange 40*. A flexible belt seal 45 is also secured to the back wall of the hopper by bolts 47.
A baflie means 50 preferably of an inverted V-type is positioned in the lower portion of the hopper with its ends secured to the front and rear walls. The outer edges 52 of the side walls 54 of the baffle are located in a parallel, spaced relation to the side walls of the hopper to form long narrow discharge slots 56 (FIG. 3) along each side of the hopper. In a typical embodiment slots 56 are about 14 inches wide. The sand which flows past the discharge slots will flow laterally to bridge and fill the space 58 in the hopper beneath the baflle. As soon as this space fills with sand the flow through the slots will stop and only the weight of the sand in this space will bear on the belt. As sand is removed from this space by the belt it will be replaced by sand flowing through the discharge slots. The slope of the side walls of the baffle should be selected to assure that sand will slide down the side wall.
The continuous flow of sand through the full length of both discharge slots is believed to be due in part to the downward converging relation of the side walls of the hopper as well as the slots formed by the baflies. Continuous flow is also attributed to the longitudinal taper of the mouth of the hopper. Referring to FIGS. 3 and 5, it should be noted that the front wall 18 is wider than the rear wall 16. At the bottom of the hopper just above belt 34 the ratio of the width of the downstream end of the hopper to the width of the upstream end of the hopper is desirably 4:1. This means that unloaded portions of the belt will be moving in the direction of arrow 61 under the full length of each of the side walls 14. For example, strips or zones 0, h of the belt will pass under the front section of the side wall. Strips b, g will pass under the center section while strips 0, 1 will pass under the rear sections. Strips d, e pass through the full length of the hopper. This constant movement of unloaded strips or zones of the belt along the full length of the walls moves the sand away from the side walls 14 to continuously open the space near the side walls that is continuously filled by sand flowing down the side wall through the slots 56.
Visual observation of the sand as it passes the baffle edges 52 reveals a continuous movement along the entire length of the bafile with no dead or stagnant spots. The rate of sand flow is adjusted by raising or lowering the gate 28.
The sand is cooled by means of natural or forced circulation of air through the space beneath the bafile 54. Aperture 62 in front wall 18 and aperture 64 in the rear wall 16 are aligned with the cavity 66 immediately beneath the bafile. A fan 60 may optionally be mounted to force air through this space. This circulation of air reduces the temperature of the sand and prevents build up and entrapment of heat, thus to remove one of the chief causes of encrustation of the sand on the side walls and on the bafile.
Although only one embodiment of the present invention has been shown and described it should be apparent that various changes and modifications can be made herein without departing from the scope of the appended claims.
What is claimed is:
1. The combination of a hopper for granular material having end walls and downwardly converging side walls and a conveyor positioned to move under the hopper, of means for controlling the flow of sand from the hopper comprising:
baflle means positioned within said hopper in upwardly spaced relation to said conveyor,
said bafile having edges generally extending along and spaced from the side walls of the hopper to form discharge slots along both sides of the hopper, the end wall of the hopper upstream of the conveyor being narrower than the end wall of the hopper downstream of the conveyor,
whereby sand removed from the hopper by the conveyor will be replaced by sand flowing onto the conveyor along the entire length of both discharge slots.
2. The combination according to claim 1 including means to circulate air through the space beneath the baflle.
3. The combination according to claim 1 wherein the battle means comprises an inverted V-type bafile.
4. A hopper arrangement for feeding a layer of granulat material onto a continuously moving belt comprismg:
a hopper having upwardly and outwardly flared side walls,
conveyor means positioned to move beneath the hopsaid hopper side walls diverging in the direction of movement of said conveyor,
baffle means positioned in the hopper in a spaced relation to the conveyor means,
said batfie means being located in a spaced relation to said side walls to define two diverging discharge slots, and
means for circulating air through the space beneath the baflle means to cool the granular material as it flows over the baffle means.
5. A hopper arrangement according to claim 4 wherein said baflle means comprises an inverted V-shaped baflle having downwardly and outwardly directed side walls.
6. The hopper arrangement of claim 4 in which the hopper has an adjustable gate at its downstream end to control the discharge rate from the hopper.
7. A sand hopper for molding sand comprising:
a hopper having upwardly diverging side walls,
said hopper side walls also diverging from upstream to downstream and forming a tapered discharge opencontinuously movable conveyor means positioned below said hopper,
a bafile positioned across said opening and having edges spaced from the walls of said hopper,
a leveling gate on the front of the hopper,
adjusting means to vary the space between the gate and the conveyor, and
cooling means to remove heat from the vicinity of the bafile.
References Cited UNITED STATES PATENTS 695,004 3/1902 Speer 34-l70 1,752,549 4/1930 Beardsley et al. 2,758,700 8/1956 Plumb 19857 FREDERICK L. MATTESON, 111., Primary Examiner. A. D. HERRMANN, Assistant Examiner.
US647794A 1967-06-21 1967-06-21 Sand hopper Expired - Lifetime US3399466A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US647794A US3399466A (en) 1967-06-21 1967-06-21 Sand hopper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US647794A US3399466A (en) 1967-06-21 1967-06-21 Sand hopper

Publications (1)

Publication Number Publication Date
US3399466A true US3399466A (en) 1968-09-03

Family

ID=24598291

Family Applications (1)

Application Number Title Priority Date Filing Date
US647794A Expired - Lifetime US3399466A (en) 1967-06-21 1967-06-21 Sand hopper

Country Status (1)

Country Link
US (1) US3399466A (en)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810537A (en) * 1972-04-13 1974-05-14 Galigher Co Novel belt feeder
US4111294A (en) * 1976-04-08 1978-09-05 Voltage Systems, Inc. Alignment plate construction for electrostatic particle orientation
US4131193A (en) * 1976-11-23 1978-12-26 General Kinematics Corporation Vibratory apparatus
FR2414419A1 (en) * 1978-01-13 1979-08-10 Bennes Marrel Semi-trailer hopper discharge control - has crank to adjust position of front of beam which is pivotally mounted above conveyor sloping down to front
US4231471A (en) * 1979-04-13 1980-11-04 Gordon James R Conveyor skirtboard apron
US4371305A (en) * 1978-02-21 1983-02-01 Pannell Robert T Material handling apparatus
DE3404024A1 (en) * 1983-02-10 1984-08-16 Paul Wurth S.A., Luxemburg DEVICE FOR THE UNIFORM LOADING OF A CONVEYOR BELT FOR GRANULATED SLAG
US4475671A (en) * 1981-11-12 1984-10-09 Aggregates Equipment, Inc. Lip vibrator unloader
US4477349A (en) * 1983-02-10 1984-10-16 Guido Monteyne Metalurigical slag filtering apparatus
US4630988A (en) * 1984-07-11 1986-12-23 Hydrotile Machinery Company Bulk material hopper
US4989727A (en) * 1990-05-04 1991-02-05 Gordon Belt Scrapers, Inc. Skirtboard apron for a belt conveyor
US5016747A (en) * 1988-08-01 1991-05-21 Martin Engineering Company Barrier seal for conveyor skirtboard
US5102285A (en) * 1988-11-21 1992-04-07 J. D. Enterprises, Inc. Trailer with continuous conveyer bed
WO1996018075A1 (en) * 1994-12-09 1996-06-13 Westelaken C Proportioning particulate conveying apparatus
US5622250A (en) * 1995-10-17 1997-04-22 J R Johanson Interface for discharging hopper contents onto feeder
US20010031514A1 (en) * 1993-12-17 2001-10-18 Smith John Stephen Method and apparatus for fabricating self-assembling microstructures
US7484617B1 (en) 2007-11-30 2009-02-03 Argonics, Inc. Sealing system for conveying belt
US20100018837A1 (en) * 2008-07-22 2010-01-28 Daniel Angel Perez Flat bottom silo for storing and conveying light and empty containers in bulk
US20140311863A1 (en) * 2011-04-29 2014-10-23 Green Industry Innovators, L.L.C. Hopper with conveyor assembly and method of use
EP2842891A1 (en) * 2013-08-31 2015-03-04 Asahi Seiko Co., Ltd. Coin carrying and guiding device of coin payment apparatus
US9109333B2 (en) 2011-07-07 2015-08-18 Roadtec, Inc. Hopper insert for asphalt paving machine
US9844181B2 (en) 2011-04-29 2017-12-19 Green Industry Innovators, L.L.C. Mower with attachment having a hopper and conveyor assembly
US9938087B2 (en) * 2016-03-03 2018-04-10 David K. Liland Conveyor tail system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US695004A (en) * 1901-04-11 1902-03-11 Noah Q Speer Sand-drier.
US1752549A (en) * 1928-10-19 1930-04-01 Beardsley & Piper Co Sand-feeding mechanism for molding machines
US2758700A (en) * 1954-01-13 1956-08-14 Iowa Mfg Co Cedar Rapids Mineral filler feeder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US695004A (en) * 1901-04-11 1902-03-11 Noah Q Speer Sand-drier.
US1752549A (en) * 1928-10-19 1930-04-01 Beardsley & Piper Co Sand-feeding mechanism for molding machines
US2758700A (en) * 1954-01-13 1956-08-14 Iowa Mfg Co Cedar Rapids Mineral filler feeder

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810537A (en) * 1972-04-13 1974-05-14 Galigher Co Novel belt feeder
US4111294A (en) * 1976-04-08 1978-09-05 Voltage Systems, Inc. Alignment plate construction for electrostatic particle orientation
US4131193A (en) * 1976-11-23 1978-12-26 General Kinematics Corporation Vibratory apparatus
FR2414419A1 (en) * 1978-01-13 1979-08-10 Bennes Marrel Semi-trailer hopper discharge control - has crank to adjust position of front of beam which is pivotally mounted above conveyor sloping down to front
US4371305A (en) * 1978-02-21 1983-02-01 Pannell Robert T Material handling apparatus
US4231471A (en) * 1979-04-13 1980-11-04 Gordon James R Conveyor skirtboard apron
US4475671A (en) * 1981-11-12 1984-10-09 Aggregates Equipment, Inc. Lip vibrator unloader
DE3404024A1 (en) * 1983-02-10 1984-08-16 Paul Wurth S.A., Luxemburg DEVICE FOR THE UNIFORM LOADING OF A CONVEYOR BELT FOR GRANULATED SLAG
US4477349A (en) * 1983-02-10 1984-10-16 Guido Monteyne Metalurigical slag filtering apparatus
US4518498A (en) * 1983-02-10 1985-05-21 Paul Wurth S.A. Metallurgical slag filtering apparatus which effects uniform charging of a conveyer belt
US4630988A (en) * 1984-07-11 1986-12-23 Hydrotile Machinery Company Bulk material hopper
US5016747A (en) * 1988-08-01 1991-05-21 Martin Engineering Company Barrier seal for conveyor skirtboard
US5102285A (en) * 1988-11-21 1992-04-07 J. D. Enterprises, Inc. Trailer with continuous conveyer bed
US4989727A (en) * 1990-05-04 1991-02-05 Gordon Belt Scrapers, Inc. Skirtboard apron for a belt conveyor
US20100075463A1 (en) * 1993-12-17 2010-03-25 The Regents Of The University Of California Method and apparatus for fabricating self-assembling microstructures
US6864570B2 (en) 1993-12-17 2005-03-08 The Regents Of The University Of California Method and apparatus for fabricating self-assembling microstructures
US7727804B2 (en) 1993-12-17 2010-06-01 The Regents Of The University Of California Method and apparatus for fabricating self-assembling microstructures
US20010031514A1 (en) * 1993-12-17 2001-10-18 Smith John Stephen Method and apparatus for fabricating self-assembling microstructures
WO1996018075A1 (en) * 1994-12-09 1996-06-13 Westelaken C Proportioning particulate conveying apparatus
US5671550A (en) * 1994-12-09 1997-09-30 Westelaken; Christianus M. T. Proportioning particulate conveying apparatus
US5622250A (en) * 1995-10-17 1997-04-22 J R Johanson Interface for discharging hopper contents onto feeder
US7484617B1 (en) 2007-11-30 2009-02-03 Argonics, Inc. Sealing system for conveying belt
US20100018837A1 (en) * 2008-07-22 2010-01-28 Daniel Angel Perez Flat bottom silo for storing and conveying light and empty containers in bulk
US20140311863A1 (en) * 2011-04-29 2014-10-23 Green Industry Innovators, L.L.C. Hopper with conveyor assembly and method of use
US9414541B2 (en) * 2011-04-29 2016-08-16 Green Industry Innovators, L.L.C. Hopper with conveyor assembly and method of use
US9844181B2 (en) 2011-04-29 2017-12-19 Green Industry Innovators, L.L.C. Mower with attachment having a hopper and conveyor assembly
US9109333B2 (en) 2011-07-07 2015-08-18 Roadtec, Inc. Hopper insert for asphalt paving machine
EP2729620B1 (en) * 2011-07-07 2018-02-14 Roadtec, Inc. Hopper insert for asphalt paving machine
EP2842891A1 (en) * 2013-08-31 2015-03-04 Asahi Seiko Co., Ltd. Coin carrying and guiding device of coin payment apparatus
US9938087B2 (en) * 2016-03-03 2018-04-10 David K. Liland Conveyor tail system

Similar Documents

Publication Publication Date Title
US3399466A (en) Sand hopper
JPH01121687A (en) Fire grate cooling machine for cooling hot bulk cargo
US2510100A (en) Continuous casting apparatus
US3279094A (en) Apparatus for controlling flow of gases
US7063242B2 (en) Refractory pouring spout and channel unit for the arrangement on an outlet of a vessel containing molten metal, especially the tundish of a strip casting installation
US1362296A (en) Heating-furnace
SU1138037A3 (en) Tray for molten metal
US2465454A (en) Deck construction for direct contact conditioning (cooling or drying) apparatus
US2588030A (en) Feeder for oscillating conveyers
US2311389A (en) Method and apparatus for handling asphalt
PL120127B1 (en) Wash-type ash collector
US1643601A (en) Pouring apparatus for glass furnaces
US2710183A (en) Expandable wind box structure for sintering machines
US2642979A (en) Hopper and like containers
US4546821A (en) Heat exchanger with bulk material retarder system
FR2399963A1 (en) Vibratory cooling conveyor for castings - with spring-supported trough forming top of passage through which cooling air flow opposite to casting travel direction
US2389983A (en) Water-cooled spark plate and rail for pig casting machines
US1852621A (en) Hardening apparatus
GB2032590A (en) A fluidised bed grate
US2163405A (en) Glass tank
KR830008143A (en) Method and apparatus for continuous feeding of mass in the shaft
US2427547A (en) Furnace door frame
US3588178A (en) Apparatus for conveying and distributing particulate material
US2728433A (en) Water cooled conveyor chute
US2109243A (en) Furnace