DK141891B - MACHINE FOR PNEUMATIC EXPOSURE OF CORN-MATERIAL MATERIAL - Google Patents
MACHINE FOR PNEUMATIC EXPOSURE OF CORN-MATERIAL MATERIAL Download PDFInfo
- Publication number
- DK141891B DK141891B DK497275A DK497275A DK141891B DK 141891 B DK141891 B DK 141891B DK 497275 A DK497275 A DK 497275A DK 497275 A DK497275 A DK 497275A DK 141891 B DK141891 B DK 141891B
- Authority
- DK
- Denmark
- Prior art keywords
- nozzles
- openings
- nozzle
- machine according
- machine
- Prior art date
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
- E01C19/20—Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders
- E01C19/205—Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders the material being spread by means of a gaseous current
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/08—Broadcast seeders; Seeders depositing seeds in rows
- A01C7/081—Seeders depositing seeds in rows using pneumatic means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
- B05B1/262—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors
- B05B1/267—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors the liquid or other fluent material being deflected in determined directions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
- B05B7/1481—Spray pistols or apparatus for discharging particulate material
- B05B7/1486—Spray pistols or apparatus for discharging particulate material for spraying particulate material in dry state
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental Sciences (AREA)
- Air Transport Of Granular Materials (AREA)
- Nozzles (AREA)
Description
(¾(¾
\ J\ J
(11) FREMLÆGGELSESSKRIFT 141891 DANMARK ^n*·^·3 ^ ^ c 15/0a // e 01 c 19/20 «(21) Ansøgning nr. ^-972/75 (22) Indleveret den 5· HOV. 1975 (23) Løbedag 5· HOV. 1975 (44) Ansøgningen fremlagt og ftemleaggeleeeakriftet offentliggjort den 14. Jill. 19θ0 DIREKTORATET FOR __ .(11) PUBLICATION 141891 DENMARK ^ n * · ^ · 3 ^^ c 15 / 0a // e 01 c 19/20 '(21) Application No. ^ -972 / 75 (22) Filed on 5 · HOV. 1975 (23) Race day 5 · HOV. 1975 (44) The application presented and the document filed on 14 Jill. 19θ0 DIRECTORATE FOR __.
PATENT-OG VAREMÆRKEVÆSENET (30) Prioritet begavet fra denPATENT AND TRADEMARK (30) Priority gifted from it
7. nov. 1974, 2452793* I*ENov 7 1974, 2452793 * I * E
(71) AMAZONEN-WERKE H. 3BEYER, Postfach 109, 4507 Basbergen-Gaste, BE.(71) AMAZON WORKS H. 3BEYER, PO Box 109, 4507 Basbergen-Gaste, BE.
(72) Opfinder: Benno Wiemeyer, Zum Stueveschacht 15, 4500 Osnabrueck-Pye, BE.(72) Inventor: Benno Wiemeyer, Zum Stueveschacht 15, 4500 Osnabrueck-Pye, BE.
(74) Fuldmægtig under sagens behandling:(74) Plenipotentiary in the proceedings:
Firmaet Chas. Hude. ________ <**) Maskine til pneumatisk udstrøning af kornformlgt materiale.The company Chas. Hude. ________ <**) Machine for pneumatic discharge of granular material.
Opfindelsen angår en maskine til pneumatisk udstrøning af kornfor- . migt materiale med en med udløbsåbninger forsynet forrådsbeholder, fra hvilken materialet over en doseringsmekanisme tilføres rørledninger, hvis yderste ender er anbragt med mellemrum på tværs af maskinens køreretning og hver har en udstrømningsåbning, idet der i området ved hver af disse åbninger findes et mundstykke, foran hvis udløbsåbning der er anbragt en skråtstillet prelplade.BACKGROUND OF THE INVENTION a material having an outlet aperture provided from which the material is fed via a dosing mechanism, the outer ends of which are spaced transversely of the direction of travel of the machine and each having an outlet opening, a mouthpiece being provided in the area at each of these apertures. if an outlet opening has an inclined baffle plate.
Fra beskrivelsen til schweizisk patent nr. 445.177 kendes en maskine af den omhandlede art. Denne maskine har især den ulempe, at der på grund af den nødvendige forskel i afstand mellem udløbsåbningen eller -åbningerne i forrådsbeholderen og udstrømningsåbningerne ved enden 2 141891 af rørledningerne forekommer forskellige udstrømningshastigheder af den materiale-luftstrøm i mundstykkerne, hvormed materialekornene bringes til at ramme prelpladerne. Disse forskelle vil medføre store uregelmæssigheder i fordelingen af materialet.From the specification of Swiss Patent No. 445,177 a machine of the kind in question is known. In particular, this machine has the disadvantage that due to the necessary difference in distance between the outlet opening or openings in the storage container and the outlet openings at the end of the pipelines, different outflow velocities of the material-air flow in the nozzles with which the material grains are caused to strike . These differences will cause major irregularities in the distribution of the material.
Ved formindskelse af rørtværsnittet som følge af det øjensynligt med prespasning indsatte mundstykke tildeles materiale-luftstrømmen i mundstykkerne i den kendte maskine en acceleration, således at ma-terialekomene med stor kraft slår mod prelpladerne. Imidlertid er kornene i gødningsstoffer, såsom urinstof med et procentvis stort kvælstofindhold forholdsvis bløde, således at disse korn ved den kraftige afprelning mod prelpladerne for en stor dels vedkommende brister og hænger fast ved pladen. Herved opstår yderligere unøjagtighed i udstrøningen, som især ved sådanne gødningstyper kan medføre særdeles store ulemper for plantevæksten og udbyttet.By reducing the pipe cross-section as a result of the apparently fitted nozzle, the material-air flow in the nozzles of the known machine is accelerated, so that the material grains strike the baffles with great force. However, the grains in fertilizers, such as urea with a percentage of nitrogen content, are relatively soft, so that the grains, by the strong peel against the baffle plates, for a large part burst and stick to the plate. This results in further inaccuracy in the outflow, which can cause particularly great disadvantages for plant growth and yield, especially in such fertilizer types.
I forbindelse med disse forøgede udstrømningshastigheder kan grundfordelingen i materiale-luftstrømmen gennem mundstykkets bølgeformede inderflade endvidere ikke blive homogen, således at der også herved opstår endnu en kilde til forekomsten af et uensartet strønings-arbejde.Furthermore, in connection with these increased outflow rates, the basic distribution of the material-air flow through the nozzle's undulating surface of the nozzle cannot become homogeneous, so that another source of the occurrence of non-uniform scattering work also arises.
Med den foreliggende opfindelse er tilstræbt at opnå en ensartet fordeling af materialet på jorden under skånsom behandling af mate-ralekornene.It is an object of the present invention to obtain a uniform distribution of the material on the ground during the gentle treatment of the material grains.
Dette er ifølge opfindelsen opnået ved, at indløbsåbningerne i mundstykkerne er væsentligt større, og udløbsåbningerne fra mundstykkerne væsentlig mindre end rørledningernes udstrømningsåbninger. Herved opnås for det første en nøje rettet tilførsel af materiale-luftstrømmen mod prelpladerne. Endvidere kan indsnævringen af gennemstrømningstværsnittet i mundstykkerne ikke forårsage nogen uheldig forøgelse af materialernes prelningshastighed mod prelfladerne, da den som følge af denne forsnævring i mundstykkerne forårsagede opstuvning bevirker, at en del af luften undviger ud af spalten mellem enden af hver rørledning og mundstykket. Herunder er hastigheden af de undvigende luftmængder imidlertid så ringe, at ingen små materiale-dele kan medrives, men alle disse partikler føres hen til prelpladen. På den anden side opnås ved opstuvningen i forbindelse med undvigelse af en del af luften, at der inden i mundstykket dannes strømhvirvler, 3 141891 som bevirker en tilstrækkelig homogen opdeling af materialepartiklerne i luftstrømmen, hvilket atter udgør en forudsætning for den ensartede fordeling af materialet over prelpladerne. Endelig medfører de karakteristiske træk ifølge opfindelsen også en automatisk udligning af de forskellige strømningstab i de enkelte rørledninger. Hvis lufthastigheden og dermed de pr. tidsenhed fra udstrømningsåbningerne ved enderne af rørledningerne udtrædende luftmængder nemlig er mindre, så bliver også opstuvningen i mundstykkerne og dermed de ud af spalten mellem rørledningerne og mundstykkerne undvigende luftmængder mindre end ved større udstrømmende luftmængder fra rørledningsåbningerne.This is achieved according to the invention in that the inlet openings in the nozzles are substantially larger and the outlet openings from the nozzles are substantially smaller than the outflow openings of the pipelines. In this way, firstly, a strictly directed supply of the material-air flow towards the baffle plates is obtained. Furthermore, the narrowing of the flow cross-section of the nozzles cannot cause any undue increase in the bead velocity of the materials against the baffle surfaces, because of the constriction caused by the buildup of the nozzles that causes some of the air to escape out of the gap between the end of each pipe. However, below this the velocity of the evasive air volumes is so low that no small material parts can be entrained, but all these particles are carried to the baffle plate. On the other hand, by the stiffening in connection with evasion of a portion of the air, it is achieved that within the nozzle, stream swirls are formed which cause a sufficiently homogeneous division of the material particles into the air flow, which again constitutes a prerequisite for the uniform distribution of the material over baffles. Finally, the characteristic features of the invention also result in automatic equalization of the various flow losses in the individual pipelines. If the air velocity and thus the per. as the unit of time from the outlet openings at the ends of the pipelines exiting air volumes is smaller, so also the buildup in the nozzles and thus the air quantities evading from the gap between the pipelines and the nozzles is smaller than at larger outflow air volumes from the pipeline openings.
Med hensyn til opdelingen af materialepartiklerne i luftstrømmen inden i mundstykket har det vist sig fordelagtigt, at mundstykkernes udløbsåbninger har en langstrakt form, at mundstykkerne i det mindste med tilnærmelse er anbragt vandret med deres udløbsåbninger vendende mod køreretnlngen, og således at udløbsåbningernes længste sider er opstående. Ved dette arrangement opnås samtidig, at kastebanerne af de fra prelpladerne bortflyvende mate'rialepar-tikler ikke i utilladelig grad kan påvirkes nævneværdigt af vindkræfter. Herved forbedres luftstrømmens opstuvnings- og gennemhvirvlings-effekt yderligere, hvis de opstående sidevægge på mundstykket er konkavt indadbuede.With regard to the division of the material particles into the air flow within the nozzle, it has been found advantageous that the nozzle outlet openings have an elongated shape, that the nozzles are at least aligned horizontally with their outlet openings facing the longitudinal opening of the nozzle, and so that . By this arrangement, it is also achieved that the throwing paths of the material particles escaping from the baffle plates cannot be unduly affected by wind forces. This further improves the buoyancy and swirling effect of the airflow if the raised side walls of the nozzle are concave inwardly curved.
I en foretrukken udførelsesform for maskinen ifølge opfindelsen har hvert mundstykke en bøjning, hvor indervæggens krumningsradius ikke er større end afstanden mellem indervæggen og ydervæggene i mundstykket i bøjningens midterste område. Hverved forlægges retningsændringen af luftstrømmen på fordelagtig måde bagud i mundstykket, således at man kan spare en bøjning i hver rørledning i området ved deres yderste ender. Der opnås også herved fordele med hensyn til gennemhvirvlingseffekten af luften og materialepartiklerne i mundstykkerne.In a preferred embodiment of the machine according to the invention, each nozzle has a bend in which the radius of curvature of the inner wall is no greater than the distance between the inner wall and the outer walls of the nozzle in the middle region of the bend. Consequently, the directional change of the air flow is advantageously positioned backwards in the nozzle so that one bend can be saved in each pipeline in the region at their outer ends. Hereby, advantages are also obtained with respect to the swirling effect of the air and the material particles in the nozzles.
Hvis mundstykkerne er anbragt forskydeligt i rørledningernes længderetning, så kan mængden af den mellem rørledningsenderne og mundstykkerne undvigende luft yderligere reguleres og tilpasses de forskellige kornstørrelsesspektre hos de enkelte materialesorter. Den samme effekt kan opnås ved, at tværsnitsforholdet mellem indløbsåbningerne i mundstykkerne og udstrømningsåbnihgeme i rørledningerne er foranderlige.If the nozzles are displaceable in the longitudinal direction of the pipelines, then the amount of air avoiding between the pipeline ends and the nozzles can be further regulated and adjusted to the different grain size spectra of the individual material types. The same effect can be obtained by changing the cross-sectional relationship between the inlet openings in the nozzles and the outlet openings in the pipelines.
4 1418914 141891
Endelig kan ifølge opfindelsen prelpladerne forløbe fra mundstykkerne imod maskinens køreretning og omtrent hen til deres midterste område i forlængelse af mundstykkernes udløbsåbninger være forsynede med sideføringsvægge. Herved opnås en eksakt føring af materialepar-tikleme på prelpladerne. Samtidig fås herved den fordel, at det er muligt at udforme disse plader på simpel måde, uden at strøbilledet henholdsvis maskinens strøarbejde derved forringes.Finally, according to the invention, the baffle plates can extend from the nozzles towards the direction of travel of the machine and approximately to their middle region in extension of the nozzle outlet openings be provided with side guide walls. This provides an accurate guide of the material particles on the baffle plates. At the same time, the advantage is obtained that it is possible to design these plates in a simple manner, without thereby reducing the casting image or the machine's spreading work.
Opfindelsen forklares nærmere i det følgende i forbindelse med tegningen, der viser udførelsesforme for maskinen ifølge opfindelsen, og hvor fig. 1 viser enden af en rørledning med et retliniet mundstykke i en første udførelsesform vist i lodret længdesnit, fig. 2 den samme rørende vist i et vandret længdesnit, og fig. 3 en rørende med et buet mundstykke i en anden udførelsesform set i et vandret længdesnit.The invention will be explained in more detail below with reference to the drawing, which shows embodiments of the machine according to the invention, and in which fig. 1 shows the end of a pipeline with a rectilinear nozzle in a first embodiment shown in vertical longitudinal section; FIG. 2 shows the same pipe shown in a horizontal longitudinal section, and FIG. 3 shows a pipe with a curved nozzle in another embodiment seen in a horizontal longitudinal section.
Den på fig. 1 og 2 viste rørledning 1 er på kendt ikke vist måde anbragt på en ud til siden ragende rammeholder 2 på maskinen og er ved sin yderste ende forsynet med en udstrømningsåbning 3. Ved hjælp af skruer 4 og fløjmøtrikker 5 er et mundstykke 6 endvidere fastgjort på rammeholderen 2, idet mundstykkets 6 indløbsåbning 7 er væsentligt større end rørledningens 1 udstrømningsåbning 3, medens udløbsåbningen 8 på mundstykket 6 er væsentligt mindre. De fra indløbsåbningen 7 til udløbsåbningen 8 førende sidevægge 9 er buede konkavt indad. For at mundstykket 6 kan forskydes i rørledningens længderetning er der i en fastgørelsesplade 10 for mundstykket 6 udformet langstrakte huller 11 på de steder, hvor skruerne 4 findes.The FIG. 1 and 2, in known manner, not shown in a manner shown on a side projecting frame holder 2 on the machine and at its outer end is provided with an outlet opening 3. By means of screws 4 and wing nuts 5, a nozzle 6 is secured to the frame holder 2, the inlet opening 7 of the nozzle 6 being substantially larger than the outlet opening 3 of the pipeline 1, while the outlet opening 8 of the nozzle 6 is substantially smaller. The side walls 9 leading from the inlet opening 7 to the outlet opening 8 are curved concave inwards. In order for the nozzle 6 to be displaced in the longitudinal direction of the pipeline, elongated holes 11 are formed in a fastening plate 10 for the nozzle 6 in the places where the screws 4 are located.
Foran udløbsåbningen er en skråtstillet prelplade 12 påskruet mundstykket 6, og denne plade er i forlængelse af udløbsåbningen 8 forsynet med side-føringsvægge 13- I den viste stilling tjener prelpladen 12 til fordeling af grovkornet materiale, idet strøfagene for de enkelte plader overlapper hinanden i vid udstrækning, f.eks. til såkaldt sengødskning. Til fordeling af finkornet materiale skal prelpladen 12 blot påskrues mundstykket 6 drejet over 180°. Under drift kører maskinen i den med en pil 14 viste køreretning. Den ud af ud- e 141891 5 strømningsåbningen 3 fra rørledningen 1 strømmende materiale-luftstrøm udfylder på den med pile 15 antydede måde rummet inden i mundstykket 6, idet en del af luften atter kan.undvige gennem mundstykkets 6 indløbsåbning 7, medens den anden del af luften med materialepartiklerne strømmer ud gennem udløbsåbningen 8 mod prelpladen 12.In front of the outlet opening, an inclined baffle plate 12 is screwed onto the nozzle 6, and this plate is provided with side walls 13 in extension of the outlet opening 8. In the position shown, the baffle plate 12 serves to distribute coarse-grained material, the spreading phages of the individual plates overlapping each other. extent, e.g. for so-called bed-sibling. For distribution of fine-grained material, the baffle plate 12 simply needs to be screwed on the nozzle 6 turned over 180 °. During operation, the machine runs in the direction of travel shown by an arrow 14. The material-air flow flowing out of the flow opening 3 from the pipeline 1 in the manner indicated by arrows 15 fills the space inside the nozzle 6, a part of the air being able to evade again through the inlet opening 7 of the nozzle 6, while the other part of the air with the material particles flowing through the outlet opening 8 towards the baffle plate 12.
Ved den i fig. 3 viste udførelsesform er mundstykket l6 i området ved udstrømningsåbningen for rørledningen 1 anbragt forskydeligt i længderetningen af rørledningen 1 på en til siden udragende rammeholder 17. Dette mundstykke 16 har en bøjning 18, og krumningsradius .In the embodiment shown in FIG. 3, the nozzle 16 in the region of the outflow opening of the conduit 1 is disposed displaceably in the longitudinal direction of the conduit 1 on a laterally projecting frame holder 17. This nozzle 16 has a bend 18 and radius of curvature.
19 af inder væggen 20 er mindre end afstanden 21 mellem indervæggen ;r 20 og ydervæggen 22 i det midterste område af bøjningen 18. Endvidere er mod indløbsåbningen 7 rettede vægdele 23 svingbart lejrede på indervæggen 20 og ydervæggen 22 og er på kendt, ikke vist måde indrettede til at kunne arreteres i forskellige stillinger. Herved kan størrelsen af indløbsåbingen 7 ændres.19 of the inner wall 20 is less than the distance 21 between the inner wall; r 20 and the outer wall 22 in the middle region of the bend 18. Further, wall portions 23 directed towards the inlet opening 7 are pivotally mounted on the inner wall 20 and the outer wall 22 and are in a known, not shown, manner. designed to be detained in various positions. Hereby the size of the inlet opening 7 can be changed.
Under drift kører maskinen i den med pilen. 14* viste køreretning.During operation, the machine runs in it with the arrow. 14 * direction shown.
Den af udstrømningsåbningen 3 udstrømmende materiale-luftstrøm udfylder også her på den ved pilene 15 antydede måde rummet inden i mundstykket 16,og ligesom i udførelseseksemplet i fig. 1 og 2.kan en del af luften undvige gennem indløbsåbningen 7, medens den anden del af luften med materialepartiklerne strømmer mod prelpladen 12.The material-air flow flowing out of the outlet opening 3 here also fills the space within the nozzle 16 in the manner indicated by the arrows 15, and as in the embodiment of FIG. 1 and 2. a portion of the air can escape through the inlet opening 7, while the other portion of the air with the material particles flows toward the baffle plate 12.
ΊΊ
Claims (7)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742452793 DE2452793C2 (en) | 1974-11-07 | Machine for the pneumatic discharge of granular material | |
| DE2452793 | 1974-11-07 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK497275A DK497275A (en) | 1976-05-08 |
| DK141891B true DK141891B (en) | 1980-07-14 |
| DK141891C DK141891C (en) | 1980-12-01 |
Family
ID=5930236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK497275A DK141891C (en) | 1974-11-07 | 1975-11-05 | MACHINE FOR PNEUMATIC EXPOSURE OF CORN-MATERIAL MATERIAL |
Country Status (3)
| Country | Link |
|---|---|
| DK (1) | DK141891C (en) |
| FR (1) | FR2290139A1 (en) |
| GB (1) | GB1482310A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2718841C3 (en) * | 1977-04-28 | 1980-04-17 | Amazonen-Werke H. Dreyer Gmbh & Co Kg, 4507 Hasbergen | Machine for the pneumatic discharge of granular material |
| AT353044B (en) * | 1977-10-21 | 1979-10-25 | Weiste Heinrich | PNEUMATICALLY OPERATED MACHINE FOR DISTRIBUTING GRAINY GOODS |
| DE2755353C3 (en) * | 1977-12-12 | 1981-09-17 | Amazonen-Werke H. Dreyer Gmbh & Co Kg, 4507 Hasbergen | Distribution device for machines with pneumatic discharge |
| US6082639A (en) * | 1999-01-25 | 2000-07-04 | Certainteed Corporation | Apparatus for increasing the density of blown insulation materials |
| FR2937888B1 (en) | 2008-10-31 | 2011-08-19 | Solvay | DEVICE AND METHOD FOR DISPENSING A FLUID. |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK134847A (en) * | 1970-10-22 | |||
| NL7405556A (en) * | 1974-04-25 | 1975-10-28 | Lely Nv C Van Der | DEVICE FOR SPREADING MATERIAL. |
-
1975
- 1975-10-31 GB GB4553375A patent/GB1482310A/en not_active Expired
- 1975-11-05 DK DK497275A patent/DK141891C/en active
- 1975-11-07 FR FR7534189A patent/FR2290139A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2290139B1 (en) | 1979-04-06 |
| DK141891C (en) | 1980-12-01 |
| DK497275A (en) | 1976-05-08 |
| DE2452793B1 (en) | 1976-02-26 |
| FR2290139A1 (en) | 1976-06-04 |
| GB1482310A (en) | 1977-08-10 |
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