US2574231A - Apparatus having rotatable means for feeding aeratable powdered material from storageand dispensing such material - Google Patents

Apparatus having rotatable means for feeding aeratable powdered material from storageand dispensing such material Download PDF

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Publication number
US2574231A
US2574231A US777759A US77775947A US2574231A US 2574231 A US2574231 A US 2574231A US 777759 A US777759 A US 777759A US 77775947 A US77775947 A US 77775947A US 2574231 A US2574231 A US 2574231A
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cone
bin
outlet
trough
aeratable
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US777759A
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Alfred D Sinden
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ADAMSON STEPHENS Manufacturing CO
STEPHENS-ADAMSON Manufacturing Co
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ADAMSON STEPHENS Manufacturing CO
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/30—Devices or methods for controlling or determining the quantity or quality or the material fed or filled
    • B65B1/36—Devices or methods for controlling or determining the quantity or quality or the material fed or filled by volumetric devices or methods
    • B65B1/363—Devices or methods for controlling or determining the quantity or quality or the material fed or filled by volumetric devices or methods with measuring pockets moving in an endless path

Definitions

  • Fig;.'1. is-a vertical section through the apparatusand the: adjacent portion: of a bin; "and Fig.2 is a plan'view with parts brokenawaydn; order to show the relation between the several elements of the-two devices.
  • the cone has a hub .lldsecuredltoiit'by circular discscrspidersiLandL.22, andntheshubiis keyed at 23110 .a supporting and drivingshaftl' l itself supported .on a-thrus't bearingcmotA-shownl mane transmission gearncase generally indicated by 25.
  • the bottom plate ll' ll has .anhaxial openings; surrounded vby acircular fiange i'lf; and the area between thatxflangeaandnthe rimhof'the baseiof theuconevis constantly. "swept by spiral vanes '28 whichserve toke'ep the powdered material'ffrom accumulating on the botom plate underlthenone.
  • Circular volumetric feeder edgea isisomewhatilowerthan its outer edge.
  • vanes IQ of generally rectangular form, having arms 19 made fast to a rotary disc 40 fixed to and driven by a hub 4
  • the ring 36 is supported by a sleeve 43, which in turn is supported by a washer 44 on the crossframe angles 45 of the main frame 34.
  • is supported by the ring 36 through a lubricating washer 46, and between the hub 4
  • has an outlet 48, here shown as located 180 degrees from the outlet l5, but of course, that location is subject to change to suit the conditions of any particular situation.
  • the former is provided with spiral vanes 50 which constantly sweep the latter and work any powdered material towards the lower wall of the trough 3
  • the diameter of the bin discharger should be such that the material to be handled cannot form an arch that will maintain itself long enough to interrupt the delivery.
  • a possible variation from that condition is to have the diameter of the bin discharger smaller than the bottom of the conical portion II, or of the bottom of the bin, and prevent the arching by the means forming the subject matter of my application No. 637,945, December 29, 1945, now abandoned.
  • volumetric feeder will be selected from prior devices or designs to suit particular conditions arising from the nature of the material to be handled or the characteristics of the final delivery sought to be made.
  • a device for taking aeratable material out of a bin the combination of a bin having a bottom provided with an outlet, a circular bin discharger in said bin including a revolving cone and feeder fingers passing over said outlet, said cone having its axis vertically arranged and the cone being revoluble on such axis, and a feeder below said bin comprising an annular trough coaxial with said cone and having a portion arranged beneath said outlet to receive material passing therethrough, a plurality of relatively narrow spaced radial vanes each substantially coincident in size and shape to the cross-sectional area of said trough and arranged therein, and
  • a device for taking aeratable material out of a bin the combination of a bin having a bottom provided with an outlet, a circular bin discharger in said bin including a revolving cone and feeder fingers passing over said outlet, said cone having its axis vertically arranged and the cone being revoluble on such axis, and a feeder below said bin comprising an annular trough coaxial with said cone and having a portion arranged beneath said outlet to receive material passing therethrough, a plurality of relatively narrow spaced radial vanes each substantially coincident in size and shape to the cross-sectional area of said trough and arranged therein, said vanes being rotatable on said axis to move material through the trough to a discharge point spaced from said outlet, and a common shaft for continuously driving the cone and feeder fingers and the vanes.
  • a device for taking aeratable material out of a bin the combination of a bin, a circular bin discharger in said bin including a revolving cone having its axis vertically arranged, radial feeder fingers projecting outwardly from said cone, and a stationary plate beneath said cone and feeder fingers and having an outlet opening beneath the path of travel of said fingers, an annular stationary trough beneath said plate coaxial with said cone and above which said outlet is arranged to discharge material thereinto, a plurality of relatively narrow radial vanes corresponding in shape and size to the cross-sectional area of and arranged in said trough and rotatable on said axis to move material to a discharge circumferentially spaced from said outlet, and means for continuously rotating said vanes.
  • a circular bin discharger including a revolving cone having its axis vertically arranged, radial feeder fingers projecting outwardly from said cone, a stationary plate beneath said cone and feeder fingers and having an outlet opening beneath the path of travel of said fingers, and means above said plate and rotatable with said cone for moving radially outwardly any material collecting on said plate beneath said cone, an annular stationary trough coaxial with said cone and above which said outlet is arranged to discharge material thereinto, and a plurality of radial vanes corresponding in shape and size to the cross-sectional area of and arranged in said trough and rotatable on said axis to move material to a discharge circumferentially spaced from said outlet.
  • a circular bin discharger including a revolving cone having its axis vertically arranged, radial feeder fingers projecting outwardly from said cone, and a stationary plate beneath said cone and feeder fingers and having an outlet opening beneath the path of travel of said fingers, an annular stationary trough coaxial with said cone and above which said outlet is arranged to discharge material thereinto, a rotary plate beneath said stationary plate and rotatable on said axis, and a plurality of vertical radial vanes carried by the peripheral portion of said rotary plate and projecting below the plane thereof into said trough, said vanes corresponding generally in shape and 7 size to the cross-sectional area of said trough to move material therein from said outlet to a discharge circumferentially spaced therefrom.
  • a circular bin discharger including a revolving cone having its axis vertically arranged, radial feeder fingers projecting outwardly from said cone, and a stationary plate beneath said cone and feeder fingers and having an outlet opening beneath the path of travel of said fingers, and means above said plate and rotatable with said cone for moving radially outwardly any material collecting on said plate beneath said cone, an annular stationary trough coaxial with said cone and above which said outlet is arranged to discharge material thereinto, a rotary plate beneath said stationary plate and rotatable on said axis, and a plurality of vertical radial vanes carried by the peripheral portion of said rotary plate and projecting below the plane thereof into said trough, said vanes corresponding generally in shape and size to the cross-sectional area of said trough to move material therein from said outlet to a discharge circumferentially spaced therefrom.
  • a circular bin discharger including a revolving cone having its axis vertically arranged, radial feeder fingers projecting outwardly from said cone, and a stationary plate beneath said cone and feeder fingers and having an outlet opening beneath the path of travel of said fingers, an annular stationary trough coaxial with said cone and above which said outlet is arranged to discharge material therelnto, a rotary 1 plate beneath said stationary plate and rotatable on said axis, a plurality of vertical radial vanes carried by the peripheral portion of said rotary plate and projecting below the plane'thereof into said trough, said vanes corresponding, generally in shape and size to the cross-sectional area of said trough to move material therein from said outlet to a discharge circumferentially spaced therefrom, a lower stationary plate beneath said rotary plate and connected at its periphery to said trough, and means between said rotary plate and said lower stationary plate for moving radially out

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

Description

NOV. 6, 1951 $|NDEN 2,574,231
APPARATUS HAVING ROTATABLE MEANS FOR FEEDING AERATABLE POWDERED MATERIAL FROM STORAGE AND DISPENSING SUCH MATERIAL Filed Q01). 5, 1947 2 SHEETS-SHEET 1 Z 2 U 2 Z 25 I62 l- [k YMM Lib z qdfi ,J 'ndm.
Nov. 6, 1951 A. D. SINDEN 2,574,231 APPARATUS HAVING ROTATABLE MEANS FOR FEEDING AERATABLE POWDERED MATERIAL FROM STORAGE AND DISPENSING SUCH MATERIAL Filed 001;. 5, 1947 2 SHEETSSHEET 2 N XIV/@222? WWW Patented Nov. 6, 1951 u r re gray-res Para;
:APEARATUS- -HAVING ROTATABLE 'MEANSV- JFOR "FEEDING AERATABLE POWDERED MATERIAL FROM STORAGE AND .DIS
: stephens-Adamson.
of Illinois Mfg. 00., a corporation;
Application October 3, 1947, Serial'No. 777359 This apparatus is to takeaeratabl'e" material "from storage, as froin a circular bin "ora-silo..
Many fine powders such as paper clay, Por-t land cement, pulverized starch, and light soda ash'when mixed withairlose theircharacteristics j as solids and-flow' lilieiiuids. They'will run through cracks :like: any liquid, go: around ben'ds; and even-flow- 'up through a trap like water in a plumbing system;
When those materials are 'stored in a circular bin or a si1o, and I attempt-is made to draw them of? fromnthe bottom, they-tend to arch" over any bottom-openingand thus stop the flow by leaving an a-ir'space blow'th'e arch.
Thereafter, when the arch-is'br'oken, the descent" of the powdered material into the air beneath thearch aerates it: and -gives it'the fluid characteristics; Then 'th'e material runs'iaway like any light liquid until the a air gets out ofZ-it when 'itu'ecovers its:characteristics of aipowdered so'lid;
'The principalobject of thi-sinventi'on ist'o take a'eratab'l'e material from storage at a measured; substantially uniform rate. Generally speaking;
this is accomplished by a combination of 'two der vices in -1t'and'em th'e' first I breaking any arch in the m'a-terial and feeclingor' discharging'the ma- 1181 12.] :from storage; and-'the -second;.zreceiving the di'scharged material; preventing itsrrnnning away if:- aerated, 'and' feeding'itiata uniformratetto a: discharge l outlet whether it istreceive'd :inta'er a-ted condition orotherwise.
Specifically, 'ithere is there.- disclosedtby way of. example what will be called! Circular? bin dis-'- chargerfias thezfirst; device, and=beneathtit what will: beiical1ed .a -Circular volumetricfeeder fordelivering; thee: material in :a :definiter volume :per unit of time.
In .the drawing:
Fig;.'1. is-a vertical section through the apparatusand the: adjacent portion: of a bin; "and Fig.2 is a plan'view with parts brokenawaydn; order to show the relation between the several elements of the-two devices.
But these 'drawings and thecorresponding description are used for thelpurpose-of. illustrae tive-disclosure only;
cured "to I a circular'i bottomz 1 133138 Mr? havingxan;
outlet. L5Fadjacentztottheiedge zthereni;
7-Glaims; ((31.222-227')" In the-lower portion. of the; :bin, above. the-hot.- tomv plate |4;isarotatable cone: lfittothellower portion .of which are secured-fltwentylfeeder .fingers l 1 adapted .to: sweepover .the corresponding: circular or annular portion of the bottom-plate and passlacross theoutlet 15. The feederfingers are providedwith arms 18, inclined tolcorrespond with.thelinclination.ofithecone lfiland madefast thereto. byrivets 1.9. i
The cone has a hub .lldsecuredltoiit'by circular discscrspidersiLandL.22, andntheshubiis keyed at 23110 .a supporting and drivingshaftl' l itself supported .on a-thrus't bearingcmotA-shownl mane transmission gearncase generally indicated by 25.
The bottom plate ll' llhas .anhaxial openings; surrounded vby acircular fiange i'lf; and the area between thatxflangeaandnthe rimhof'the baseiof theuconevis constantly. "swept by spiral vanes '28 whichserve toke'ep the powdered material'ffrom accumulating on the botom plate underlthenone.
' operationof 'th'e circular b'z'n disc'hzzrger" As the shaft-2.4 is rotated counter-clockwisein Fig 2, sthetpowdered material in'lthe: bin 10 is agitated andworkedto theldischargezopening L5; through which it hf-allsiby gravity The...revolying cone it and the-feeder fingersi l keep theentire area otthelower part .of thewbin alive and moving, .hence, any tendency toarch about theqbottom of the bin and-.over the outlet l5 is-cOn-v stantly broken up, with-(the result :that the .material is fed to theioutletsin a constant, regular supply-t.
Arching of themater-ial willioccur, .butitcam not endurellongv enough to seriously interfere with the regular delivery firoml the bin. Any aeration. caused Joy breakingv an:w arch is taken care: of 1 by. the second device inn/the combination;
Circular volumetric feeder edgeaisisomewhatilowerthan its outer edge. and
is securedet a circular-discafil havingcalcentral .openingin@whichiis fitted-ca ring; 35 surrounding the shaft 24. Closely fitted into the trough and sweeping it in regular series are twenty vanes IQ of generally rectangular form, having arms 19 made fast to a rotary disc 40 fixed to and driven by a hub 4| keyed on the shaft 24 at 42. The ring 36 is supported by a sleeve 43, which in turn is supported by a washer 44 on the crossframe angles 45 of the main frame 34. The hub 4| is supported by the ring 36 through a lubricating washer 46, and between the hub 4| and the hub 20 is a ring 41.
The trough 3| has an outlet 48, here shown as located 180 degrees from the outlet l5, but of course, that location is subject to change to suit the conditions of any particular situation.
Operation of the volumetric feeder The powdered material, falling through the outlet l5, collects in the trough 3|, and the closely fitted vanes 38 divide it into measured volumes and force those volumes to travel around the trough until they reach the outlet 48 in succession, when they drop by gravity through the discharge 30. The vanes 38 fit the trough so closely that aerated powdered material cannot pass between and run around the trough to the outlet 48, either with or against the movement of the vanes. Thus, it will be seen that, regardless of the aerated or other condition of the powdered material passing through the outlet l5 from the bin discharger, it will be prevented from moving faster than the apparatus is designed to take, and will be forced to move in measured quantity at a definite rate determined by the speed of the shaft to the outlet 48 and the final discharge 30.
To prevent accumulation of powdered material between the rotary disc 4|! and the stationary disc 35, the former is provided with spiral vanes 50 which constantly sweep the latter and work any powdered material towards the lower wall of the trough 3|.
The diameter of the bin discharger should be such that the material to be handled cannot form an arch that will maintain itself long enough to interrupt the delivery. A possible variation from that condition is to have the diameter of the bin discharger smaller than the bottom of the conical portion II, or of the bottom of the bin, and prevent the arching by the means forming the subject matter of my application No. 637,945, December 29, 1945, now abandoned.
Variations in the construction of the bin discharger will be selected from prior devices or made to suit particular conditions and that herein disclosed is deemed suflicient.
Variations in the volumetric feeder will be selected from prior devices or designs to suit particular conditions arising from the nature of the material to be handled or the characteristics of the final delivery sought to be made.
I claim:
1. In a device for taking aeratable material out of a bin, the combination of a bin having a bottom provided with an outlet, a circular bin discharger in said bin including a revolving cone and feeder fingers passing over said outlet, said cone having its axis vertically arranged and the cone being revoluble on such axis, and a feeder below said bin comprising an annular trough coaxial with said cone and having a portion arranged beneath said outlet to receive material passing therethrough, a plurality of relatively narrow spaced radial vanes each substantially coincident in size and shape to the cross-sectional area of said trough and arranged therein, and
means for continuously rotating said vanes on said axis to move the material at a measured rate through the trough to a discharge spaced from said outlet.
, 2. In a device for taking aeratable material out of a bin, the combination of a bin having a bottom provided with an outlet, a circular bin discharger in said bin including a revolving cone and feeder fingers passing over said outlet, said cone having its axis vertically arranged and the cone being revoluble on such axis, and a feeder below said bin comprising an annular trough coaxial with said cone and having a portion arranged beneath said outlet to receive material passing therethrough, a plurality of relatively narrow spaced radial vanes each substantially coincident in size and shape to the cross-sectional area of said trough and arranged therein, said vanes being rotatable on said axis to move material through the trough to a discharge point spaced from said outlet, and a common shaft for continuously driving the cone and feeder fingers and the vanes.
3. In a device for taking aeratable material out of a bin, the combination of a bin, a circular bin discharger in said bin including a revolving cone having its axis vertically arranged, radial feeder fingers projecting outwardly from said cone, and a stationary plate beneath said cone and feeder fingers and having an outlet opening beneath the path of travel of said fingers, an annular stationary trough beneath said plate coaxial with said cone and above which said outlet is arranged to discharge material thereinto, a plurality of relatively narrow radial vanes corresponding in shape and size to the cross-sectional area of and arranged in said trough and rotatable on said axis to move material to a discharge circumferentially spaced from said outlet, and means for continuously rotating said vanes.
4. In a. device for taking aeratable material out of a bin, the combination of a circular bin discharger including a revolving cone having its axis vertically arranged, radial feeder fingers projecting outwardly from said cone, a stationary plate beneath said cone and feeder fingers and having an outlet opening beneath the path of travel of said fingers, and means above said plate and rotatable with said cone for moving radially outwardly any material collecting on said plate beneath said cone, an annular stationary trough coaxial with said cone and above which said outlet is arranged to discharge material thereinto, and a plurality of radial vanes corresponding in shape and size to the cross-sectional area of and arranged in said trough and rotatable on said axis to move material to a discharge circumferentially spaced from said outlet.
5. In a device for taking aeratable material out of a bin, the combination of a circular bin discharger including a revolving cone having its axis vertically arranged, radial feeder fingers projecting outwardly from said cone, and a stationary plate beneath said cone and feeder fingers and having an outlet opening beneath the path of travel of said fingers, an annular stationary trough coaxial with said cone and above which said outlet is arranged to discharge material thereinto, a rotary plate beneath said stationary plate and rotatable on said axis, and a plurality of vertical radial vanes carried by the peripheral portion of said rotary plate and projecting below the plane thereof into said trough, said vanes corresponding generally in shape and 7 size to the cross-sectional area of said trough to move material therein from said outlet to a discharge circumferentially spaced therefrom.
6. In a device for taking aeratable material out of a bin, the combination of a circular bin discharger including a revolving cone having its axis vertically arranged, radial feeder fingers projecting outwardly from said cone, and a stationary plate beneath said cone and feeder fingers and having an outlet opening beneath the path of travel of said fingers, and means above said plate and rotatable with said cone for moving radially outwardly any material collecting on said plate beneath said cone, an annular stationary trough coaxial with said cone and above which said outlet is arranged to discharge material thereinto, a rotary plate beneath said stationary plate and rotatable on said axis, and a plurality of vertical radial vanes carried by the peripheral portion of said rotary plate and projecting below the plane thereof into said trough, said vanes corresponding generally in shape and size to the cross-sectional area of said trough to move material therein from said outlet to a discharge circumferentially spaced therefrom.
7. In a device for taking aeratable material out of a bin, the combination of a circular bin discharger including a revolving cone having its axis vertically arranged, radial feeder fingers projecting outwardly from said cone, and a stationary plate beneath said cone and feeder fingers and having an outlet opening beneath the path of travel of said fingers, an annular stationary trough coaxial with said cone and above which said outlet is arranged to discharge material therelnto, a rotary 1 plate beneath said stationary plate and rotatable on said axis, a plurality of vertical radial vanes carried by the peripheral portion of said rotary plate and projecting below the plane'thereof into said trough, said vanes corresponding, generally in shape and size to the cross-sectional area of said trough to move material therein from said outlet to a discharge circumferentially spaced therefrom, a lower stationary plate beneath said rotary plate and connected at its periphery to said trough, and means between said rotary plate and said lower stationary plate for moving radially outwardly any material collecting on the latter plate. ALFRED D. SINDEN.
FOREIGN PATENTS Country. Date Great Britain Aug. 1, 1929 Number Number
US777759A 1947-10-03 1947-10-03 Apparatus having rotatable means for feeding aeratable powdered material from storageand dispensing such material Expired - Lifetime US2574231A (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2709537A (en) * 1950-05-15 1955-05-31 Chain Belt Co Feeding apparatus for belt conveyers and the like
US2786609A (en) * 1952-12-12 1957-03-26 Morris D Isserlis Material feed bin
US2800255A (en) * 1954-09-17 1957-07-23 Donald J Austermiller Agitator assembly for multiple outlet hopper
DE1095206B (en) * 1957-09-03 1960-12-15 Buss Ag Continuously working discharge device
US3018930A (en) * 1957-08-02 1962-01-30 Basf Ag Delivery apparatus for lumpy goods
US3151780A (en) * 1962-11-15 1964-10-06 Stein Sam Ass Automatic feeder for comminuted food
US3240242A (en) * 1965-02-01 1966-03-15 Procter & Gamble Rotary annular hopper for carton filling machine
US3336907A (en) * 1966-03-07 1967-08-22 Andy L Thompson Limited access livestock feeder apparatus
US3863815A (en) * 1974-03-07 1975-02-04 Gilmore Tatge Manufacturing Co Grain metering device
US3945537A (en) * 1975-02-13 1976-03-23 Peter Langen Discharge device for a bunker
US4487339A (en) * 1981-07-23 1984-12-11 Usm Corporation Method of and apparatus for storing and dispensing a mixture of particulate materials
US5356599A (en) * 1992-02-14 1994-10-18 Sumitomo Chemical Co., Ltd. Continuous powder catalyst supply apparatus and catalyst supply system
US5622467A (en) * 1994-07-05 1997-04-22 Portasilo Limited Discharge means for a silo
US20070183853A1 (en) * 2004-01-29 2007-08-09 Ing. Per Gjerdrum As System tank and output unit for transporting untreated drill cuttings
US20220340358A1 (en) * 2021-04-27 2022-10-27 Severfield Products & Processing Ltd. Discharge Means for Dispensing Apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US371881A (en) * 1887-10-18 everett
US861079A (en) * 1905-02-17 1907-07-23 Lorenzo D Benner Corn-planter.
US1084873A (en) * 1913-01-15 1914-01-20 Samuel A Addis Sugar-distributing bowl.
GB316453A (en) * 1928-08-23 1929-08-01 Oliver Peter Horlick Improvements in apparatus for delivering measured quantities of powdered or granular material
US1944447A (en) * 1931-11-04 1934-01-23 Mcvicker Cleophas Soap dispenser

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US371881A (en) * 1887-10-18 everett
US861079A (en) * 1905-02-17 1907-07-23 Lorenzo D Benner Corn-planter.
US1084873A (en) * 1913-01-15 1914-01-20 Samuel A Addis Sugar-distributing bowl.
GB316453A (en) * 1928-08-23 1929-08-01 Oliver Peter Horlick Improvements in apparatus for delivering measured quantities of powdered or granular material
US1944447A (en) * 1931-11-04 1934-01-23 Mcvicker Cleophas Soap dispenser

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2709537A (en) * 1950-05-15 1955-05-31 Chain Belt Co Feeding apparatus for belt conveyers and the like
US2786609A (en) * 1952-12-12 1957-03-26 Morris D Isserlis Material feed bin
US2800255A (en) * 1954-09-17 1957-07-23 Donald J Austermiller Agitator assembly for multiple outlet hopper
US3018930A (en) * 1957-08-02 1962-01-30 Basf Ag Delivery apparatus for lumpy goods
DE1095206B (en) * 1957-09-03 1960-12-15 Buss Ag Continuously working discharge device
US3151780A (en) * 1962-11-15 1964-10-06 Stein Sam Ass Automatic feeder for comminuted food
US3240242A (en) * 1965-02-01 1966-03-15 Procter & Gamble Rotary annular hopper for carton filling machine
US3336907A (en) * 1966-03-07 1967-08-22 Andy L Thompson Limited access livestock feeder apparatus
US3863815A (en) * 1974-03-07 1975-02-04 Gilmore Tatge Manufacturing Co Grain metering device
US3945537A (en) * 1975-02-13 1976-03-23 Peter Langen Discharge device for a bunker
US4487339A (en) * 1981-07-23 1984-12-11 Usm Corporation Method of and apparatus for storing and dispensing a mixture of particulate materials
US5356599A (en) * 1992-02-14 1994-10-18 Sumitomo Chemical Co., Ltd. Continuous powder catalyst supply apparatus and catalyst supply system
US5622467A (en) * 1994-07-05 1997-04-22 Portasilo Limited Discharge means for a silo
US20070183853A1 (en) * 2004-01-29 2007-08-09 Ing. Per Gjerdrum As System tank and output unit for transporting untreated drill cuttings
US7823607B2 (en) * 2004-01-29 2010-11-02 Ing. Per Gjerdrum As System tank and output unit for transporting untreated drill cuttings
US20220340358A1 (en) * 2021-04-27 2022-10-27 Severfield Products & Processing Ltd. Discharge Means for Dispensing Apparatus
US11691809B2 (en) * 2021-04-27 2023-07-04 Severfield Products & Processing Ltd Discharge means for dispensing apparatus

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