US3874604A - Apparatuses for disintegration of straw and similar material - Google Patents

Apparatuses for disintegration of straw and similar material Download PDF

Info

Publication number
US3874604A
US3874604A US413934A US41393473A US3874604A US 3874604 A US3874604 A US 3874604A US 413934 A US413934 A US 413934A US 41393473 A US41393473 A US 41393473A US 3874604 A US3874604 A US 3874604A
Authority
US
United States
Prior art keywords
rotor
knives
shaft
discs
disc
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
US413934A
Other languages
English (en)
Inventor
Sven D Gronberg
Henry Alf Bertil Gronberg
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.)
GRONBERGS GJUTERI OCH KVARNFABRIK REKORDVERKEN OTTUM AB
Original Assignee
GRONBERGS GJUTERI OCH KVARNFABRIK REKORDVERKEN OTTUM AB
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 GRONBERGS GJUTERI OCH KVARNFABRIK REKORDVERKEN OTTUM AB filed Critical GRONBERGS GJUTERI OCH KVARNFABRIK REKORDVERKEN OTTUM AB
Application granted granted Critical
Publication of US3874604A publication Critical patent/US3874604A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F12/00—Parts or details of threshing apparatus
    • A01F12/40—Arrangements of straw crushers or cutters
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F29/00—Cutting apparatus specially adapted for cutting hay, straw or the like
    • A01F29/02—Cutting apparatus specially adapted for cutting hay, straw or the like having rotating knives with their cutting edges in a plane perpendicular to their rotational axis
    • A01F29/04—Cutting apparatus specially adapted for cutting hay, straw or the like having rotating knives with their cutting edges in a plane perpendicular to their rotational axis with feeding direction transverse to axis

Definitions

  • ABSTRACT A cutting apparatus comprising a rotor on which are mounted discs rotating with the rotor shaft and provided at their periphery with at least one shaft each, said shafts extending in parallel with the rotor shaft and supporting at each end a cutting knife which upon rotation of the rotor pivots in a plane transverse to the axis of said rotor, means being provided on said rotor shaft for enabling the discs mounted thereon to be drawn together axially with the disc hubs arranged end to end in such a manner that said discs will be positioned at a torsional angle relative to one another and the rotor knives be located along a helical line about said rotor.
  • the presentdnvention relates to apparatuses of the kind which are, arranged to disintegrate straw and straw like materials and which are provided, with a rotor-having several knives positionedadjacent the rotor periphery and arranged for pivotal motion in a plane'transverse to the rotor axis, said rotor being rotatably mounted in a machine casing having a row of laterally spaced knives serving as supports or grates to the straw-like material and between which knives the rotor knives pass to disintegrate the straw.
  • the rotor likewise comprises a number of discseach one provided adjacent its periphery with at least two shafts extending in parallel with the rotor axis.
  • the discs incorporated in the rotor have their hubs positioned end to end on the rotor shaft and are drawn together axially on the rotor shaft, preferably by means of a tightening nut, and in that at least one pair of pivotable knives is associated with each disc, the inner ends of each pair of knives being engaged on the opposite ends of adisc shaft projecting throughits disc and extending] parallel to the rotor axis, these discs being positioned at such a mutual torsional angle on the rotor shaft that the rotor knives will be positioned along a helical line fe xtending about the rotor.
  • FIG. 1 is a vertical cross-sectional view through a cutting apparatus in accordance with the invention, mounted at the rear end of a combine harvester,
  • FIG. 2 illustrates on a smallerscale in a side view the rotor and the mounting thereof
  • FIG. 3 illustrates on an enlarged scale a partly broken cross-sectional view through the rotor
  • FIG. 4 illustrates the rotor in a partly broken longitudinal section
  • FIGS. 5 and 6 are partly broken longitudinal sections showing two various embodiments of the rotor discs.
  • reference numeral 1 designates the rear end of a thresher mechanism, e.g. the thresher of a combine harvester.
  • the cutting apparatus 2 is intended to disintegrate the straw supplied from the vibrating screen 3 of the thresher l, the straw being cut up into comparatively short pieces.
  • the cutter 2 comprises both a rotor 4 comprising a rotatably driven shaft 5 supporting a number of knives 6 which take part in the shaft rotation, and a support or grate 7 supporting the straw during the disintegration thereof.
  • the support 7 comprises a row of knives 8 spaced apart a distance of e.g. 50 mm.
  • the rotor knives 6 are arranged, during the rotation of the rotor, to pass through the gaps formed between the knives 8.
  • the rotating direction is indicated by an arrow 9.
  • the shaft 5 is mounted in bearings 11 in the short sides of abox-like open top and open bottom machine casing 10 on a pivotally mounted support frame 12 at the rear end of the thresher mechanism l.
  • the shaft 5 is preferably driven by means of a belt (not shown) from the thresher mechanism via a belt pulley 13 at one end of the shaft 5.
  • the upper open end of the machine casing 10 is provided with a funnellike section 14 onto which the straw is advanced from the vibrating screen 3 and slides down towards the rotor 4 where the rotor knives 6 engage the straw and cut it into small pieces against the grate knives 8.
  • the machine casing 10 is provided with an outlet opening 15 for discharge of the cut straw pieces.
  • the rotor knives 6 are supported at their radially inner ends by means of a trunnion 16 (see particularly FIG. 4) in such'a manner that the distance 17 separating these two knives equals the distance 18 between two neighbouring grate knives 8.
  • the trunnion or disc shaft 16 having at both its ends a nut 19, passes through two spacer washers 20 and the inner runner ring 21 of two ball bearings 22 as well as spacer sleeve 23 mounted between the bearings.
  • the hubs of the respective spacer washer 20 in addition pass through one aperture each formed in the rotor knives 6.
  • the rotor knives 6 Upon tightening of the nuts 19 the rotor knives 6 will be securely clamped such that, together with the shaft 16, the spacer washers 20, the inner runner ring 21 of the bearings 22 and the spacer sleeve 23, they may pivot as a unit in a transverse plane relative to axis of the rotor 4.
  • the bearings 22 are squeezed into a bore 24 extending in parallel with the rotor shaft 5 in a boss 26 positioned at the outer periphery of a disc 25.
  • Both ends of the hub 27 are in the form of a toothed wheel serving as a clevis coupling and having teeth 29 alternating with tooth spaces 30 positioned in such a manner that when a number of discs 25 are threaded in a row end to end on the rotor shaft 5, the shafts 16 of adjacent discs extend at a definite torsional angle, eg an angle of 45 (see FIG. 3) relative to one another.
  • the knife pairs 6 will be positioned along a helical line extending about the rotor as is diagrammatically illustrated by the dashed lines in FIG. 2.
  • the rotor shaft 5 which is supported at its ends by the bearings 11 is provided internally thereof with two tightening nuts 31, 32 by means of which the entire row of discs 25 may be pressed close together with the hubs 27 in an end-to-end position.
  • This considerable tightening of the hubs 27 in an axial direction strengthens the rotor shaft 5 considerably. There is no risk that the shaft will bend as a result of this tightening operation. Consequently, the rotor constructed as indicated will be well balanced.
  • FIG. 6 is illustrated a bearing structure of this kind. ln this case the shaft 16 passes through two bearing sleeves 33, 34 serving as slide bearings and supporting at their outer ends one rotor knife 6 each between which knives a spacer sleeve 35 is mounted. Upon tightening of the nuts 19 the rotor knives 6 are clamped against the bearing sleeves 33, 34 and in turn these are clamped against the spacer sleeve 35 in such a manner that all these parts together with the shaft 16 become movable as one single unit.
  • the discs 25 are imagined made through diecasting of aluminum or some other suitable metal alloy, such as Silumin.
  • the discs may be arranged so as to support only one pair of knives 6 but also two diametrically opposite pairs of rotor knives are possible. In case large rotors are used even three or four pairs of rotor knives, positioned symmetrically, may be used.
  • the embodiments as illustrated and described are to be regarded as examples only and the arrangements for supporting the rotor knives 6 as well as the configuration of these knives may be constructively altered in a variety of ways within the scope of the appended claims.
  • Other types of ball bearings 22 than roller bearings are applicable.
  • the follower means 29 consist of cylindrical pins extending in parallel with the rotor shaft 5 and engaging in the end surfaces of the hubs 27.
  • Apparatus for disintegrating straw or like material comprising in combination:
  • a casing having an upper opening for receiving material to be disintegrated and a lower opening for discharging disintegrated material
  • said rotor assembly comprising a rotor shaft, a plurality ofdiscs each having a hub portion and a peripheral portion, the hub portions being hollow and slidably engaged on said rotor shaft and tightening means on at leastone end of said rotor shaft for tensioning the rotor shaft and compressing said hub portions to integrate said rotor shaft and discs as a single rotatable unit in which said discs are aligned opposite individual knives of said row of knives, at least one pair of rotor knives disposed in straddling relation to the peripheral portion of each disc so as to extend therefrom and pass in straddling relation to that knife of said row of knives with which the corresponding disc is aligned and mounting means for rotatably and detachably securing one end of each knife of each pair to the corresponding disc, and means interlocking adjacent hub portions of said discs so that the pairs of rot
  • said mounting means comprises, for each disc, a disc shaft rotatably carried by the peripheral portion of each disc and having opposite end portions projecting therebeyond, the rotor knives of each pair being engaged on the opposite ends of a corresponding disc shaft and securing nut engaged on each end of each disc shaft to secure said rotor knives in place.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Threshing Machine Elements (AREA)
US413934A 1972-11-16 1973-11-08 Apparatuses for disintegration of straw and similar material Expired - Lifetime US3874604A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE14881/72A SE368657B (enrdf_load_stackoverflow) 1972-11-16 1972-11-16

Publications (1)

Publication Number Publication Date
US3874604A true US3874604A (en) 1975-04-01

Family

ID=20299818

Family Applications (1)

Application Number Title Priority Date Filing Date
US413934A Expired - Lifetime US3874604A (en) 1972-11-16 1973-11-08 Apparatuses for disintegration of straw and similar material

Country Status (8)

Country Link
US (1) US3874604A (enrdf_load_stackoverflow)
CA (1) CA984709A (enrdf_load_stackoverflow)
DE (1) DE2357176A1 (enrdf_load_stackoverflow)
FI (1) FI51885C (enrdf_load_stackoverflow)
FR (1) FR2206899B1 (enrdf_load_stackoverflow)
GB (1) GB1409829A (enrdf_load_stackoverflow)
NL (1) NL7315647A (enrdf_load_stackoverflow)
SE (1) SE368657B (enrdf_load_stackoverflow)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3957211A (en) * 1974-01-24 1976-05-18 Osaka Kiko Co., Ltd. Refuse disintegration device
US4059236A (en) * 1976-12-06 1977-11-22 Garbalizer Corporation Of America Shearing structure in materials reduction machinery
US4342319A (en) * 1980-12-29 1982-08-03 Allis-Chalmers Corporation Combined chopper and impeller for an axial flow combine
US4600158A (en) * 1981-06-30 1986-07-15 Matex Co., Ltd. Runner chopper
US4646757A (en) * 1984-04-27 1987-03-03 Biso Bitter Gmbh & Co. Kg Harvester-thresher
US4807817A (en) * 1988-03-08 1989-02-28 Schoewe David G Comminuting and winding apparatus
US4998679A (en) * 1985-09-30 1991-03-12 Arne Bender Device for chopping straw
US6120373A (en) * 1997-11-07 2000-09-19 Schrattenecker; Franz Chopper for breaking up stalks, chiefly straw
WO2001070405A1 (en) * 2000-03-22 2001-09-27 Recot, Inc. Method and apparatus for forming food clusters
US6692351B2 (en) 2002-07-17 2004-02-17 Case Corporation Crop residue chopper with reconfigurable fixed offset blades
US6699121B2 (en) * 2001-02-16 2004-03-02 Claas Selbstfahrende Erntemaschinen Gmbh Comminuting device in an agricultural harvesting machine
US20070004479A1 (en) * 2005-06-30 2007-01-04 Deere & Company, A Delaware Corporation Straw chopper for combine with adjustable stationary knife bank
US20080293461A1 (en) * 2007-05-23 2008-11-27 Benes Jason M Rotary chopper element of an integral chopper assembly of a combine harvester
US20080305842A1 (en) * 2007-06-05 2008-12-11 Benes Jason M Reversable counter knife bank
US7510472B1 (en) * 2007-10-29 2009-03-31 Cnh America Llc Combine harvester residue chopper active counter knife assembly
US20110053669A1 (en) * 2009-08-26 2011-03-03 Dirk Weichholdt Harvested Crop Residue Chopper and Distribution Arrangement For A Combine With An Impeller Blower Whose Shape Conforms To The Contour Of The Straw Chopper
US8221203B1 (en) * 2011-02-04 2012-07-17 Cnh America Llc Knives for rotary chopper assembly of a combine harvester
US20150038201A1 (en) * 2013-08-01 2015-02-05 Claas Selbstfahrende Erntemaschinen Gmbh Combine harvester comprising a chopping mechanism
US9137949B2 (en) * 2012-12-26 2015-09-22 Cnh Industrial America Llc Chopper assembly for harvesting equipment
CN104919993A (zh) * 2015-05-12 2015-09-23 黎建军 一种秸秆粉碎机
CN105107605A (zh) * 2015-10-15 2015-12-02 王志强 秸秆、粪块粉碎机
US10130039B2 (en) 2015-08-28 2018-11-20 Cnh Industrial America Llc Agricultural harvester including feedback control of chopping parameters
US20190141904A1 (en) * 2017-11-15 2019-05-16 Rasspe Systemtechnik GmbH Flail assembly for a straw chopper shaft with a mounting hole in a bracket and such a straw chopper shaft
CN113841519A (zh) * 2021-09-30 2021-12-28 盐城工业职业技术学院 一种应用于捆扎秸秆垛的秸秆切割成屑装置及其切割方法
EP4424158A1 (en) * 2023-03-03 2024-09-04 GKB Machines B.V. Plant processing apparatus and method for inactivating plant material

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE403552B (sv) * 1977-01-19 1978-08-28 Gronbergs Gjuteri & Kvarnfab Anordning vid slaghack
IE59348B1 (en) * 1987-01-23 1994-02-09 Roche Anthony A Cutter Head for a Hedge Cutter
US7297053B2 (en) 2004-07-16 2007-11-20 Cnh America Llc Rotary crop residue chopper apparatus with stiffener having air flow generating capability and method of making the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2241491A (en) * 1939-07-31 1941-05-13 Ronald Alfred Gilbert Machine for disintegrating solid and semisolid materials
US2954812A (en) * 1954-08-09 1960-10-04 Gronberg Anton Bertil Straw cutter for combines
US3186651A (en) * 1961-04-15 1965-06-01 Polysius Gmbh Crusher
US3380502A (en) * 1965-01-15 1968-04-30 Gronberg Anton Bertil Straw chopper attachment for combine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE863862C (de) * 1950-04-09 1953-01-19 Wilhelm Kemper Fa Strohschneidemaschine
GB692766A (en) * 1952-01-07 1953-06-10 Horn Mfg Company Improvements in stalk shredding machines
FR1212595A (fr) * 1958-12-30 1960-03-24 Broyeur pour moissonneuse-batteuse et autres usages

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2241491A (en) * 1939-07-31 1941-05-13 Ronald Alfred Gilbert Machine for disintegrating solid and semisolid materials
US2954812A (en) * 1954-08-09 1960-10-04 Gronberg Anton Bertil Straw cutter for combines
US3186651A (en) * 1961-04-15 1965-06-01 Polysius Gmbh Crusher
US3380502A (en) * 1965-01-15 1968-04-30 Gronberg Anton Bertil Straw chopper attachment for combine

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3957211A (en) * 1974-01-24 1976-05-18 Osaka Kiko Co., Ltd. Refuse disintegration device
US4059236A (en) * 1976-12-06 1977-11-22 Garbalizer Corporation Of America Shearing structure in materials reduction machinery
US4342319A (en) * 1980-12-29 1982-08-03 Allis-Chalmers Corporation Combined chopper and impeller for an axial flow combine
US4600158A (en) * 1981-06-30 1986-07-15 Matex Co., Ltd. Runner chopper
US4646757A (en) * 1984-04-27 1987-03-03 Biso Bitter Gmbh & Co. Kg Harvester-thresher
US4998679A (en) * 1985-09-30 1991-03-12 Arne Bender Device for chopping straw
US4807817A (en) * 1988-03-08 1989-02-28 Schoewe David G Comminuting and winding apparatus
US6120373A (en) * 1997-11-07 2000-09-19 Schrattenecker; Franz Chopper for breaking up stalks, chiefly straw
WO2001070405A1 (en) * 2000-03-22 2001-09-27 Recot, Inc. Method and apparatus for forming food clusters
US6378795B1 (en) 2000-03-22 2002-04-30 Recot, Inc. Method and apparatus for forming food clusters
US6699121B2 (en) * 2001-02-16 2004-03-02 Claas Selbstfahrende Erntemaschinen Gmbh Comminuting device in an agricultural harvesting machine
US6692351B2 (en) 2002-07-17 2004-02-17 Case Corporation Crop residue chopper with reconfigurable fixed offset blades
US7544127B2 (en) * 2005-06-30 2009-06-09 Deere & Company Straw chopper for combine with adjustable stationary knife bank
US20070004479A1 (en) * 2005-06-30 2007-01-04 Deere & Company, A Delaware Corporation Straw chopper for combine with adjustable stationary knife bank
AU2006202772B2 (en) * 2005-06-30 2011-05-19 Deere & Company Straw chopper for combine with adjustable stationary knife bank
US7988080B2 (en) 2007-05-23 2011-08-02 Cnh America Llc Rotary chopper element of an integral chopper assembly of a combine harvester
US20080293461A1 (en) * 2007-05-23 2008-11-27 Benes Jason M Rotary chopper element of an integral chopper assembly of a combine harvester
US20080305842A1 (en) * 2007-06-05 2008-12-11 Benes Jason M Reversable counter knife bank
US7484350B2 (en) * 2007-06-05 2009-02-03 Cnh America Llc Reversable counter knife bank
US7510472B1 (en) * 2007-10-29 2009-03-31 Cnh America Llc Combine harvester residue chopper active counter knife assembly
US20090111549A1 (en) * 2007-10-29 2009-04-30 Farley Herbert M Combine harvester residue chopper active counter knife assembly
US7677965B2 (en) * 2007-10-29 2010-03-16 Cnh America Llc Combine harvester residue chopper active counter knife assembly
US8864561B2 (en) * 2009-08-26 2014-10-21 Deere & Company Harvested crop residue chopper and distribution arrangement for a combine with an impeller blower whose shape conforms to the contour of the straw chopper
US20110053669A1 (en) * 2009-08-26 2011-03-03 Dirk Weichholdt Harvested Crop Residue Chopper and Distribution Arrangement For A Combine With An Impeller Blower Whose Shape Conforms To The Contour Of The Straw Chopper
US8221203B1 (en) * 2011-02-04 2012-07-17 Cnh America Llc Knives for rotary chopper assembly of a combine harvester
US9137949B2 (en) * 2012-12-26 2015-09-22 Cnh Industrial America Llc Chopper assembly for harvesting equipment
US20150038201A1 (en) * 2013-08-01 2015-02-05 Claas Selbstfahrende Erntemaschinen Gmbh Combine harvester comprising a chopping mechanism
CN104919993A (zh) * 2015-05-12 2015-09-23 黎建军 一种秸秆粉碎机
US10130039B2 (en) 2015-08-28 2018-11-20 Cnh Industrial America Llc Agricultural harvester including feedback control of chopping parameters
CN105107605A (zh) * 2015-10-15 2015-12-02 王志强 秸秆、粪块粉碎机
US20190141904A1 (en) * 2017-11-15 2019-05-16 Rasspe Systemtechnik GmbH Flail assembly for a straw chopper shaft with a mounting hole in a bracket and such a straw chopper shaft
US10925218B2 (en) * 2017-11-15 2021-02-23 Rasspe Systemtechnik GmbH Flail assembly for a straw chopper shaft with a mounting hole in a bracket and such a straw chopper shaft
CN113841519A (zh) * 2021-09-30 2021-12-28 盐城工业职业技术学院 一种应用于捆扎秸秆垛的秸秆切割成屑装置及其切割方法
CN113841519B (zh) * 2021-09-30 2023-01-10 盐城工业职业技术学院 一种应用于捆扎秸秆垛的秸秆切割成屑装置及其切割方法
EP4424158A1 (en) * 2023-03-03 2024-09-04 GKB Machines B.V. Plant processing apparatus and method for inactivating plant material
NL2034259B1 (nl) * 2023-03-03 2024-09-09 Gkb Machines B V Plantverwerkingsinrichting en werkwijze voor het inactief maken van plantmateriaal

Also Published As

Publication number Publication date
DE2357176A1 (de) 1974-05-30
NL7315647A (enrdf_load_stackoverflow) 1974-05-20
FR2206899B1 (enrdf_load_stackoverflow) 1978-01-06
SE368657B (enrdf_load_stackoverflow) 1974-07-15
FR2206899A1 (enrdf_load_stackoverflow) 1974-06-14
FI51885B (enrdf_load_stackoverflow) 1977-01-31
FI51885C (fi) 1977-05-10
CA984709A (en) 1976-03-02
GB1409829A (en) 1975-10-15

Similar Documents

Publication Publication Date Title
US3874604A (en) Apparatuses for disintegration of straw and similar material
US5680999A (en) Shredder
US4391172A (en) Rotary cutting machine
US2141662A (en) Grinder
US5011091A (en) Cellulose fiberization apparatus
US5036757A (en) Apparatus for shelling and de-germinating corn
US3141485A (en) Tobacco shredder
US4673136A (en) Apparatus for the dry defibration of sheets of fibrous cellulose material and like materials
US2141664A (en) Grinder
FI94101C (fi) Kiekkoseula, jossa on kokoonpuristuvat välikerenkaat
JPH0247939B2 (enrdf_load_stackoverflow)
US3151645A (en) Breaker and shredding cylinder for ear corn
US2915182A (en) Apparatus for grading grain
GB1572330A (en) Beater mill
US2776800A (en) Air flow plate grinders
FR2671740A1 (fr) Broyeur a percussion a deux courants pour le traitement de matieres contenant des fibres.
US3110062A (en) Bale rasp
US4403743A (en) Articulated knife rotor assembly in a machine for reducing materials
US2996260A (en) Feed mill cylinder
US3396767A (en) Corn cob shredding rollers
US3556421A (en) Chopping machine
US1492102A (en) Grinding beater
US2848738A (en) Pellet mill
US430646A (en) hickey
JP6656863B2 (ja) 回転刃体及び粉砕機