US2654203A - Bonded doffer for mechanical cotton pickers - Google Patents

Bonded doffer for mechanical cotton pickers Download PDF

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Publication number
US2654203A
US2654203A US211471A US21147151A US2654203A US 2654203 A US2654203 A US 2654203A US 211471 A US211471 A US 211471A US 21147151 A US21147151 A US 21147151A US 2654203 A US2654203 A US 2654203A
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unit
face
web
plate
doffer
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US211471A
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Howard F Parkerton
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Navistar Inc
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International Harverster Corp
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D46/00—Picking of fruits, vegetables, hops, or the like; Devices for shaking trees or shrubs
    • A01D46/08—Picking of fruits, vegetables, hops, or the like; Devices for shaking trees or shrubs of cotton
    • A01D46/14—Picking of fruits, vegetables, hops, or the like; Devices for shaking trees or shrubs of cotton using lint-from-plant pickers

Definitions

  • This invention has to do with doffers for removing cotton from the picker spindles of cotton picking machines and more particularly concerns improvements in the means and method for securingspindle-engaging doffer pads onto a carrier therefor constituting elements of the doifer assembly.
  • a doffer assembly of the general character as that embodying the present invention, together with environment for such assembly, is disclosed in U. S. Patent 2,247,632.
  • the doffer assembly shown in said patent comprises a metal disk having an annulus of rubber-like material secured to a face thereof by clamping elements.
  • the rubber annulus includes a plurality of lug-like dofng pads projecting therefrom axially of the disk and spaced apart circumferentially thereof.
  • These doling pads are also of rubber and formed integrally with the rubber annulus, the lugs being pliable and resilient to facilitate their wiping engagement with the picker machine spindles to strip the cotton therefrom without injuring such spindles.
  • To assure firm mounting of the rubber annulus upon the metal disk such disk has been provided with projections respectively registering seen as a point in Fig. 1.
  • An important object of this invention is the provision of a novel means and method for securing the doier pads to the disk Without the use of metal or hard material projections extending thereinto, whereby4 the pads can be worn away by the spindles to a greater extent and correspondingly decrease the frequency of doffer assembly servicing.
  • a further object of this invention is the provision of an attaching means whereby the doiiing pads or a web with which they are integrally formed are attached directly to the carrier therefor by adhesion.
  • Y Fig. 1 is an end View of a doffer assembly constructed in accordance with this invention.
  • Fig. 2 is an enlarged fragmentary sectional view taken on the line 2 2 of Fig. l, illustrating the means by which a rubber-like or elastomer unit embodying dofng pads is fabricated to a rigidk disk unit of the assembly.
  • Fig. 3 is a view taken similarly to Fig. 1, illustrating a modied form of the invention which eliminates anchoring studs on the reverse face of the elastomer unit.
  • Fig. 4 is an enlarged fragmentary sectional view taken on the line 4--4 of Fig. 3.
  • Fig. 5 is a view taken similarly to Figs. 1 and 3, showing a third form of the invention wherein the elasomer doing pads are discrete elements individually adhesively secured to the rigid plate carrier therefor.
  • Fig. 6 is an enlarged fragmentary sectional View taken on line 6-6 of Fig. 5.
  • a disk-like carrier unit II having a hub I2 and formed symmetrically about a principal axis a During operation of the entire doffer assembly I3 it is caused to rotate about the axis a.
  • the disk-like unit II has an annular face I4 disposed substantially within a plane at right angles to the axis a and arranged coaxially therewith.
  • This annular face I4 constitutes one side of a flat annular rim portion I5 containing a plurality of holes I6 communicating through the face i4 and spaced apart circumferentially of the unit II as shown in Fig. 1.
  • An annular shoulder I1 which borders the inner perimeter of the annular face I4 projects axially of the disk-like unit from such face.
  • Anintegral unit I8 of elastomer material comprises an annular wafer-like web I9 having an obverse face ZI and a reverse face 22 conformving to the annular face I4 of the disk-like unit I I.
  • Anchoring studs 23 project from the reverse face 22 respectively into the plate holes I6.
  • the innerperimetric edge 24 ofthe web I9 rests against the shoulder I'I whereas a circular ange 25 of the web I9 extends along the outer perimetric edge thereof and projects axially of the plate I I from the reverse face of such web in contiguity With the outer perimetric edge 26 of the plate.
  • a plurality of doihng lugs or pads 21 project axially from the obverse face 2i of the customer unit la.
  • the elastomer unit I8 may be formed of natural rubber, synthetic rubber-like material, or a blend of these two materials.
  • the material from which the unit I8 is made preferably possesses the characteristic of soft vulcanized rubber having a resistance to displacement and elasticity proximating that of tread projections on conventional automobile tires. This material is vulcanizable and is attached to the face I4, the shoulder I'I, the perimeter 26 and the circular edges about the openings IB by being pressed thereagainst while in an unvulcanized vcondition pursuant to being molded tu form thelwebil 9, studs-,23 and-'thefpads 21.
  • the shoulder II provides-a ⁇ definite.; molding. edge for the inner peripheryl'of the@A elastomer'.- web I9 to expedite the forming of the inner periphery of the web neatly and accurately. Furthermore, the shoulder I'I provides a guard for" the inner edge of the web thereby preventingentry of any foreign object' between the web and disks surface: 14, andravoiding commencement. of separation and: peeling at this section.
  • the elastomer flange 25 cireumscribing the.
  • Anchoring studs 23 are capable of absorbingA shearingforce .againstthe edges ofthe openings mand-thereby supplementthe adhesive connectionbetween they web. and the faceA I4 in resisting sliding.. ofthe webupon said face.
  • l'wluliberk cementsA of suitable character are'v-commercially" producedat many sources; a typical cement beings'old'under the trade-name Plastiloclr ⁇ by Tlhe B; F.” Goodrich Companyof Akron, Ohio; This'lin-ii' Vis vulcanizedpursuant to vulcanization of the vuleanizable unit ISafand'becomes attached to'such unit- I!!l and'to the surfaces Ila, I-'Iiz' and 26a to form a vulcaniaedadhesion between the opposed contiguousfaces of tlie units IIaand.
  • cloffer padsy 251e have been attached directly to the annular plate surface I4c byvulcanization.
  • thedoling pads Z'I will be molded into-form from vulcaniiere-e elastomer material and'pressed'v directly against the plate surface Mic where-a vulcanized' adhesion is formed pursuant tolthe application of'heatfand pressure to andbetween the; ⁇ parts.. I ⁇ 5c: and. 27e.
  • a doiier assembly comprising a plate-like unit for rotation about a principal axis thereof, saidi'unit having an annular face thereon disposed substantially-Within a plane at right angles to saidaxis andfcoaxial therewith, there being holes Méillunitlinfregistry with said face; an integral unit otelastomermaterial comprising an annular Wafer-like' web having an obverse face and a reversefface congruent with and disposed in fiat- Wise contiguity with said face of the plate-like unitffa plurality-'otlugsfprojecting axially from said. obverse face and: spacedapart;v circumferentially thereof,l and anchoring. studs. projecting from y the .reverse face. respectivelyinto saidflolesg and means adhesively joining said-opposed faces throughoutltheir area of, ⁇ opposedcontiguity.
  • a doiTer assembly comprising a plate-like unitfor rotation abouta principal axis thereof',l said unit having an annular face, disposedl substantially within a plane at right. anglesto said axis and coaxial therewitliy andla shoulder projectingaxially. endwise of .theunit" along the inner perimeter of such annular face; an integral unit of elastomer material.

Description

Oct. 6, 1953 H. F. PARKERTON 2,654,203
BoNoEn noF'FER Foa MECHANIQAL com-Tou PIcxEas med Feb. 17, 1951 1 15a i 14a 60- I N VEN TOR.
BY Y @2 Patented Oct. 6, 1953 BONDED DOFFER FOR MECHANICAL COTTON PICKERS Howard F. Parkerton, South Gate, Calif., assignor to International Harvester Company, a corporation of New Jersey Application February 17, 1951, Serial No. 211,471
5 Claims.
This invention has to do with doffers for removing cotton from the picker spindles of cotton picking machines and more particularly concerns improvements in the means and method for securingspindle-engaging doffer pads onto a carrier therefor constituting elements of the doifer assembly.
A doffer assembly of the general character as that embodying the present invention, together with environment for such assembly, is disclosed in U. S. Patent 2,247,632. The doffer assembly shown in said patent comprises a metal disk having an annulus of rubber-like material secured to a face thereof by clamping elements. The rubber annulus includes a plurality of lug-like dofng pads projecting therefrom axially of the disk and spaced apart circumferentially thereof. These doling pads are also of rubber and formed integrally with the rubber annulus, the lugs being pliable and resilient to facilitate their wiping engagement with the picker machine spindles to strip the cotton therefrom without injuring such spindles. To assure firm mounting of the rubber annulus upon the metal disk, such disk has been provided with projections respectively registering seen as a point in Fig. 1.
with the back sides of the doing pads and projecting into nesting relation with cavities therein. Because of these metal projections into the pads they form limits beyond which the tips of the lugs cannot be worn away by abrasion during operation of the cotton picking machine, since it is essential that only the rubber-like material engage the spindles. An important object of this invention is the provision of a novel means and method for securing the doier pads to the disk Without the use of metal or hard material projections extending thereinto, whereby4 the pads can be worn away by the spindles to a greater extent and correspondingly decrease the frequency of doffer assembly servicing.
A further object of this invention is the provision of an attaching means whereby the doiiing pads or a web with which they are integrally formed are attached directly to the carrier therefor by adhesion. This method of fabricating the doler assembly diminishes weight in so far as clamping devices for securing the lugs to the plates are eliminated. Elimination of the clamping devices is also a factor contributing to diminution in production cost of these improvedY doffei assemblies.
These and other desirable objects inher nt in and encompassed by the invention will be more clearly understood from the ensuing description,
the appended claims and the annexeddrawings,
wherein:
Y Fig. 1 is an end View of a doffer assembly constructed in accordance with this invention.
Fig. 2 is an enlarged fragmentary sectional view taken on the line 2 2 of Fig. l, illustrating the means by which a rubber-like or elastomer unit embodying dofng pads is fabricated to a rigidk disk unit of the assembly.
Fig. 3 is a view taken similarly to Fig. 1, illustrating a modied form of the invention which eliminates anchoring studs on the reverse face of the elastomer unit.
Fig. 4 is an enlarged fragmentary sectional view taken on the line 4--4 of Fig. 3.
Fig. 5 is a view taken similarly to Figs. 1 and 3, showing a third form of the invention wherein the elasomer doing pads are discrete elements individually adhesively secured to the rigid plate carrier therefor.
Fig. 6 is an enlarged fragmentary sectional View taken on line 6-6 of Fig. 5.
With continued reference to the drawings and particularly to Figs. 1 and 2, there can be seen a disk-like carrier unit II having a hub I2 and formed symmetrically about a principal axis a During operation of the entire doffer assembly I3 it is caused to rotate about the axis a.
The disk-like unit II has an annular face I4 disposed substantially within a plane at right angles to the axis a and arranged coaxially therewith. This annular face I4 constitutes one side of a flat annular rim portion I5 containing a plurality of holes I6 communicating through the face i4 and spaced apart circumferentially of the unit II as shown in Fig. 1. An annular shoulder I1 which borders the inner perimeter of the annular face I4 projects axially of the disk-like unit from such face.
Anintegral unit I8 of elastomer material comprises an annular wafer-like web I9 having an obverse face ZI and a reverse face 22 conformving to the annular face I4 of the disk-like unit I I. Anchoring studs 23 project from the reverse face 22 respectively into the plate holes I6. The innerperimetric edge 24 ofthe web I9 rests against the shoulder I'I whereas a circular ange 25 of the web I9 extends along the outer perimetric edge thereof and projects axially of the plate I I from the reverse face of such web in contiguity With the outer perimetric edge 26 of the plate. A plurality of doihng lugs or pads 21 project axially from the obverse face 2i of the customer unit la.
The elastomer unit I8 may be formed of natural rubber, synthetic rubber-like material, or a blend of these two materials. The material from which the unit I8 is made preferably possesses the characteristic of soft vulcanized rubber having a resistance to displacement and elasticity proximating that of tread projections on conventional automobile tires. This material is vulcanizable and is attached to the face I4, the shoulder I'I, the perimeter 26 and the circular edges about the openings IB by being pressed thereagainst while in an unvulcanized vcondition pursuant to being molded tu form thelwebil 9, studs-,23 and-'thefpads 21. Whilfthe plastici unvulcani'zed material is held in this molded formation, heat is applied thereto for producing the vulcanized condition at'- tendant to which an adhesive bond is elected with the surfaces I4, I'I, 26 andZthe" rims: of' the openings I6.
The shoulder II provides-a` definite.; molding. edge for the inner peripheryl'of the@A elastomer'.- web I9 to expedite the forming of the inner periphery of the web neatly and accurately. Furthermore, the shoulder I'I provides a guard for" the inner edge of the web thereby preventingentry of any foreign object' between the web and disks surface: 14, andravoiding commencement. of separation and: peeling at this section. The elastomer flange 25 cireumscribing the. outer periphery of the disk provides; a resilient guard aindtrim: for the outer rim` ci the assembly I3-y and= because Otfbeing adhesivelyattached'to the periphery 2e resists separation-ofr theouter peripheralpertion oaf the elastomer web from`v the disk face I4. Anchoring studs 23 are capable of absorbingA shearingforce .againstthe edges ofthe openings mand-thereby supplementthe adhesive connectionbetween they web. and the faceA I4 in resisting sliding.. ofthe webupon said face.
In the form of the invention illustrated in Figs. 3.and aparts. corresponding to those in the Figs. land 2 embodiment-are` designated by the' same respective reference Vcharacters plus the suix a. In tliisfiorm of the invention thereA are no holes in theannular. rimiportion Ia of the plate-like unit I'Ia` and'. consistent with this arrangement there are no studsvon the reverse face oi the elastomer' web tifa. Prior to molding andpressing the elastomer' unit Ida onto the plate-like carrier unit, the shoulder Ila, the annularvface Maand theouter periphery 26d are'covered with a thin"V lm 3l of vulcanizableV rubber cement. l'wluliberk cementsA of suitable character are'v-commercially" producedat many sources; a typical cement beings'old'under the trade-name Plastiloclr`by Tlhe B; F." Goodrich Companyof Akron, Ohio; This'lin-ii' Vis vulcanizedpursuant to vulcanization of the vuleanizable unit ISafand'becomes attached to'such unit- I!!l and'to the surfaces Ila, I-'Iiz' and 26a to form a vulcaniaedadhesion between the opposed contiguousfaces of tlie units IIaand. I8`a; When the assembly process' involves-.usefand'vulcanizationv off the nlm SI1 the; elastomer unit Ia may bepreformedfand vulcanized. prior tof assembly with` such' i'lmand the'unit:y Ila; When attaching themolde'd unvulcanizedunit I8;P Figs. 1 andZj to the carrier unit: Il.,L4 thati pcrtion oi the: unit i8@ contiguous with. the'surfaces'- ofthe. unit Iii in opposed: relation tltierir/vith', in'becomi'ng vulcanized and attachedto. these: opposed surfaces, constitutes a vulcanized means forv establishing an adhesion between the units IBand II'.
Referring nov/f to thethird'embodiment; of the invention'illustrated' invFigs. 5 and', the cloffer padsy 251e have been attached directly to the annular plate surface I4c byvulcanization. A vuloanized film;A 3-Ic,y employed like the film .''I' in FigsnSfa-nd 4- embodiment, is illustratedin Fig. 6 asan expedient for securing the' pads 21e to the plate carrier surface I 4c. It is contemplated', hou/"ever, that thedoling pads Z'I will be molded into-form from vulcanizahl-e elastomer material and'pressed'v directly against the plate surface Mic where-a vulcanized' adhesion is formed pursuant tolthe application of'heatfand pressure to andbetween the;` parts.. I`5c: and. 27e.
4 Having thus.- described a; limited' number of embodimentsoff the inventioni with the? View of clearly and concisely illustrating the same, I claim:
l. A doiier assembly comprising a plate-like unit for rotation about a principal axis thereof, saidi'unit having an annular face thereon disposed substantially-Within a plane at right angles to saidaxis andfcoaxial therewith, there being holes insaillunitlinfregistry with said face; an integral unit otelastomermaterial comprising an annular Wafer-like' web having an obverse face and a reversefface congruent with and disposed in fiat- Wise contiguity with said face of the plate-like unitffa plurality-'otlugsfprojecting axially from said. obverse face and: spacedapart;v circumferentially thereof,l and anchoring. studs. projecting from y the .reverse face. respectivelyinto saidflolesg and means adhesively joining said-opposed faces throughoutltheir area of,` opposedcontiguity.
2. A doiTer assembly comprising a plate-like unitfor rotation abouta principal axis thereof',l said unit having an annular face, disposedl substantially within a plane at right. anglesto said axis and coaxial therewitliy andla shoulder projectingaxially. endwise of .theunit" along the inner perimeter of such annular face; an integral unit of elastomer material. comprisingn ali' an'n'ula'r wafer-like web-having.` an obversefa'ceanda reversevface conforming to the annular` facev o'fltli'e plate-like unit', andl'a pluralt'yof lugs projecting axially fromY said obverse face` and spaced' apart circumferentially thereof, the in'ner' perimetric edge ofv said' web lying; against saidslioulder; said reverse faceV being in opposed'contiguitywith the annular face of the plate-like unit", andt means adhesively joining saidopposed' faces throughout their area of opposed contiguity.
3; The combination` set' forth in-claim :Zfwliere inacircular iiangeW extends along' the outer perimetric' edgeof said web and projects` axially of theV plate from the'reverse faceofthe web-ih contiguity-W-ith'the outer perimetricl edgeofthe plate-like unit.
4i Thefcombin'ationset forth inc'laimZ wherein theplate-lilre-unit contains holes arrangedl in af-cir'cle about said axis andv in registry with' the annular face ofthe plate-like unit,` andwherein the Vunit o'felastomer' material includes anchoring studs@ projecting. from the: reverse1 face thereof respectivelyconforming tosaid holes' and' pro'- jecting thereinto. Y
5.. Theco'mbinatio'n set forthinclim-:Zwlierein ai circular ilange extendsalong the outer perimetric edge of said Webb andi projectsaxially of: the plate from the. reversek face of." the web agamst-the outer'perimetric edge off the: plate'- like unit, wherein theplate-like unit'- contains holes arranged in a circle; about said axis and' in registry with the annular face of the plate-like unit, andwhereinthe unit' of elastomer material includes anchoring studs proiecting` from: tharee verse face 'thereoff respectively' conforming' to `said holes and projecting thereinto.
HOWARDF. PARKERTGN'.
References Cited in the file of5 this patent UNITED'STATES PATENTS.
Number NameY Date 1,588,008 Billdette JUIIQS, 19246 1,949,823 Broecker Mar.' (if 1934 2,031g907'l Johnston Mai'. 24', 1936 2,247,682- Hlgen Jllly l; 1941i 2247,686 JHIIS'OITI` Jlfy 1, 15.41 2,462,800 Berry Eeb; 22j 1949V
US211471A 1951-02-17 1951-02-17 Bonded doffer for mechanical cotton pickers Expired - Lifetime US2654203A (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2699028A (en) * 1953-05-22 1955-01-11 Deere Mfg Co Cotton picker doffer
US2699029A (en) * 1953-06-11 1955-01-11 Deere Mfg Co Cotton picker doffer
US2699026A (en) * 1953-05-05 1955-01-11 Deere Mfg Co Cotton picker doffer
US2700266A (en) * 1953-07-16 1955-01-25 Int Harvester Co Cotton picker doffer
US2703474A (en) * 1953-06-23 1955-03-08 Lyne S Gamble Doffing mechanism for cotton pickers
US2720741A (en) * 1953-06-09 1955-10-18 Int Harvester Co Cotton picker doffer
US2729930A (en) * 1955-01-17 1956-01-10 Int Harvester Co Cotton doffer
US2731780A (en) * 1956-01-24 Plant lifter for harvesting machine
US2738636A (en) * 1954-05-12 1956-03-20 Int Harvester Co Cotton picker doffer
US3048962A (en) * 1960-11-14 1962-08-14 Deere & Co Doffer plate
US3422607A (en) * 1965-09-27 1969-01-21 Int Harvester Co Cotton picker doffer
DE4327306B4 (en) * 1992-08-17 2005-02-17 Ntn Corp. Bearings with improved service life characteristics
US10238029B2 (en) * 2017-03-21 2019-03-26 Dimitrios Gkalekos Doffer for cotton picker harvesters
CN111264189A (en) * 2020-04-19 2020-06-12 石河子大学 Assembled cotton picker takes off cotton dish

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1588008A (en) * 1923-11-22 1926-06-08 Goodyear Tire & Rubber Method of forming cushion tires
US1949823A (en) * 1932-04-30 1934-03-06 Bridgeport Brass Co Method of molding a rubber valve on the center pin of pneumatic valve insides
US2034907A (en) * 1935-04-10 1936-03-24 Int Harvester Co Doffing means for cotton pickers
US2247682A (en) * 1939-03-18 1941-07-01 Int Harvester Co Cotton picker
US2247686A (en) * 1938-11-25 1941-07-01 Int Harvester Co Cotton picker
US2462800A (en) * 1943-10-16 1949-02-22 Ruby M Berry Doffing mechanism for cotton harvesters

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1588008A (en) * 1923-11-22 1926-06-08 Goodyear Tire & Rubber Method of forming cushion tires
US1949823A (en) * 1932-04-30 1934-03-06 Bridgeport Brass Co Method of molding a rubber valve on the center pin of pneumatic valve insides
US2034907A (en) * 1935-04-10 1936-03-24 Int Harvester Co Doffing means for cotton pickers
US2247686A (en) * 1938-11-25 1941-07-01 Int Harvester Co Cotton picker
US2247682A (en) * 1939-03-18 1941-07-01 Int Harvester Co Cotton picker
US2462800A (en) * 1943-10-16 1949-02-22 Ruby M Berry Doffing mechanism for cotton harvesters

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2731780A (en) * 1956-01-24 Plant lifter for harvesting machine
US2699026A (en) * 1953-05-05 1955-01-11 Deere Mfg Co Cotton picker doffer
US2699028A (en) * 1953-05-22 1955-01-11 Deere Mfg Co Cotton picker doffer
US2720741A (en) * 1953-06-09 1955-10-18 Int Harvester Co Cotton picker doffer
US2699029A (en) * 1953-06-11 1955-01-11 Deere Mfg Co Cotton picker doffer
US2703474A (en) * 1953-06-23 1955-03-08 Lyne S Gamble Doffing mechanism for cotton pickers
US2700266A (en) * 1953-07-16 1955-01-25 Int Harvester Co Cotton picker doffer
US2738636A (en) * 1954-05-12 1956-03-20 Int Harvester Co Cotton picker doffer
US2729930A (en) * 1955-01-17 1956-01-10 Int Harvester Co Cotton doffer
US3048962A (en) * 1960-11-14 1962-08-14 Deere & Co Doffer plate
US3422607A (en) * 1965-09-27 1969-01-21 Int Harvester Co Cotton picker doffer
DE4327306B4 (en) * 1992-08-17 2005-02-17 Ntn Corp. Bearings with improved service life characteristics
US10238029B2 (en) * 2017-03-21 2019-03-26 Dimitrios Gkalekos Doffer for cotton picker harvesters
CN111264189A (en) * 2020-04-19 2020-06-12 石河子大学 Assembled cotton picker takes off cotton dish

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