US2500803A - Slctional grain pan for threshing machines - Google Patents

Description

March 14, 1950 D. COCKRELL SECTIONAL GRAIN PAN FOR THRESHING MACHINES 2 Sheets-Sheet 1 Filed NOV. 5, 1947 INVENTOR. flerzrzzs (56/??(9/4 ATTD RN EYE March 14, 1950 D. COCKRELL 2,500,803

SECTIONALIGRAIN PAN FOR THRESHING MAYCHINES Filed Nov. 5, 11947 2 Sheets-Sheet 2 I7 N i '(b m;

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'ATTDRN EYS Patented Mar. 14, 1950 PATENT OFFICE PANTOR THRESHING' MAGHINES lienni's'dimkrell, Durham, ApplibafiumNiwemhnn 5, 19147, SerialfNo. 78451 55;

(Cl. 13 OT -2%).

My present invention relates to the.- general-Z class, of; threshing implements. including, grain separators, straw carriers, and. shaking, tables or oscillatingfand, reciprocating rai'n-pans,v and morespecifically to; an improved adjustable grain-- pan; support or attachment for mounting; the graim-pan within the, separator housing; of an: automotive combine a mobile thresher',. ora trac tor -towed .tlrresher.

The. primary obiect or. the, invention is the. pro vision of supporting mechanism for a hinged os*-- eillating, grain p'an by means. of whiclir the suspended' or floating pan may oscillateorreciiurocater smoothly without excessive shocks orvi-- b'rations: of the operatingparts, to insure a more efiicil'e'nt' performance; of the functions of the shaker table or grain-pan;

The attachment of my invention includes a minimum number of parts th'at'maybe manu facture'd with facility at low cost of production, and the parts may be assembled with conven i'ence: for installation with various well known types" of threshing machines Without-- material: alterationof" the machines; toenhance their pro.- fi'ciency.

The invention consists in certain novel combii nations and arrangements of" parts? for mounting; the suspended gra-in pa n within the separator housing as willherei'nafterbediascrihedand'l morer particularly set' forth in the appended claims;

In the accompanying drawings I have illustrat'ed onecompleteexample of an installation of a physical embodiment of my invention in which the parts' are combined and arranged in accord with=one1mode I- havevdevisedcior the practical application of the principles of invert tion.

It will be understood thatchanges? and alter.- ations are contemplated and: may be made. in, these exemplifying drawings and mechanical structure within the scope. or; my claims; with.- outi-depanting from the principles' of theyinvenr Figure 1 is an exterior side elevation of'a portion of a thresher or combine showing the sepa rator housing, and equipped with the adjustable supports of my invention for the interior grainpan; and

Figure 2 is a vertical longitudinal sectional view of the structure in Fig. 1 equipped with the mechanism of my invention.

Figure 3 is a transverse vertical sectional View at line 3-3 of Fig. 1, with parts omitted to more clearly show the application of the mechanism of my invention.

Figure 4 is an enlarged detailiview ii'r SiiiBZ-GIE vation at the hinged-joint (tithe-sectional: grainpan.

Figure-5'is v a detail viewinelevatiorr ofonerofi the two complementary supports fori the grains pan.

Figure 6 is a: detailed vertical, sectional" view of" the support;

Figure?- shows onex ofthe: hinge belts"; or: pins of the-grain and Figures 8; and 9? are; respectively a face: view:- and edge; view' of? one: ofi'thet r einiiorcing: 01'. wear plates which. protect the sides: of: the; ma:- chine on which my inventiom is; installed: dntingr the movement of the: hingebolts; causedhby the? oscillatiorrandi reciprocation 0T3 the gnainepanl,

In order: that the: genera-ll. arrangement ands. utilityof: parts may: readily be-understood; Lhave shown: inf. the-: assembly views, so. much: oil: the: grain separating-portion of; the housing; on a, thresher whichrisygenerally designated by the nefe erencez numeral I: as; is necessary for an; apprer- (nation of; the. merits of my invention; Thisspor tionof; the-.- thresher includes the conventionat separator housi-ng'in whichthe sectionalonhinged; grains-pan or shaker. table. is. mounted; and the sectionsare: designated; as 2, and 2A respectivelyr The.,-'sectiont2 is the rear; section, and the sections 2A iszthe front section; The. hinged grain-pan issuspended; at its/ ends, as usual on. pivoted, hangers; 3? and 4, and-the pan isnoscillat'ed and ire;- ciprocated in a horizontal planeto. separate. material thatis fed. theretohfromthe rotary cyvli'n der 5-, andpassing through the ooncavelfilis deposited. on: the oscillating pan...

The. air. blast caused. by the. usual rotaryfan I. passing thmugh.;.the passage18 of'the fan. housing; separates thechafi'fromc the. grain asit: fiiiesiove'r the chafi'er f0". The grai'n-pansectionl pruvided. with, the charter fingers 9, overlying the charter; I 0: and sieve? Ll; locatedibeneath. theiachafr ten [0.

In Fig; I, the rotary operating'parts" suclr as the cylinder 5 and fan 1 areactuated from" a-belt drive f2, and" thegrain-riansectionsfi and are oscillated by power transmitted from a chain drive I3 in connection with a pitman mechanism I4, pitman l5, and the pivoted rocker arm 16 pivotally connected to the grain-pan section 2, as shown in Figure 2.

In carrying out my invention, the hinged and pivotally suspended oscillating and reciprocating grain-pan sections 2 and 2A are, in addition to the hangers 3 and 4, provided with a supporting mount at the axially alined hinge joints, and a pair of these mounts is provided, one at each exterior side of the housing I. Inasmuch as the two mounts are similar in construction and operation, a detailed description of one will sufiice for both mounts.

The hinge joints, between the two sections 2 and 2A of the grain-pan usually include a horizontally disposed truss head rivet. My invention contemplates the removal of this conventional rivet, and replacing it with a hardened steel bolt I1 that passes through the section 2A of the grain-pan and is supported in the apertured ear or hinge plate I9 bolted at l8 on the hinged end of the section 2.

This outwardly extending bolt is received in a cylindrical bearing bushing 20 that passes pivot pins for connecting the inner ends of the through an arcuate slot in the side wall of the housing I, and the wall of the slot is reinforced by means of a hardened metal reinforcing or wear plate 2! having an arcuate slot 22, and bolted on the housing. 1

The reinforcing or wear plate 2i prevents the movement of the bolt and its bushing from wearing the slot in the housing as the floating grain pan is oscillated and reciprocated with flexing movements of the hinge joint, and the grain-pan is supported to insure smooth operation and to absorb shocks and strains of the Vibrating parts.

At its outer end, the bushing is provided with an integral depending arm 23 that is threaded at its lower end into a boss 24 having a complementary threaded socket 33 in which the arm is adjustably connected, and the vboss is integral with a bearing bushing 25. When properly adjusted, the arm is locked in adjusted position by means of a pair of lock nuts 26 and 21 threaded on the arm and against the upper end of the boss 24.

The arm 23 rocks with the complementary movements of the grain-pan, and for this purpose the bushing is journalled upon a supporting bolt or pin 28 that is passed through a bearing hole in a base plate 29 that is bolted at 30 on the exterior face of the housing; lock nuts 3| and 32 being empolyed on the pivot bolt for retaining the arm assembly in operative position.

It has been found by operators of the particular type of machine on which my invention is installed that the conventional rivet causes wear at the hinged joint of the grain-pan sections. This wear results in vibration and slap of the section, which causes serious trouble and damage to the grain-pan section.

The installation of my invention prevents wear of the grain-pan sections, as it'supports these sections at the hinged joint during the oscillation and reciprocation of the sections. The grainpan sections float smoothly on the hanger, and the hanger is adjustable to compensate for any wear that may occur.

It is believed that from the foregoing description, the manner of mounting and the construc- Having thus fully described my invention, what sections and projecting through the slots, a pair of upstanding supporting arms pivotally mounted at their lower ends on the exterior of the housing, a pair of bushings rigid with the upper ends of the arms and enclosing the pins, means for re taining the bushings on the pins, and means for longitudinally adjusting the arms in relation to the pivot pins.

2. In a thresher including a separator housing having slots in the side walls and slotted wear plates fixed about the slots, the combination with two op osed pair of pivotal y depending hangers mounted on the exterior of the housing, a sectional grain pan, the sections of said grain pan being pivotally connected to the hangers at their outer ends and extending inwardly of the hangers and terminating intermediate thereof, pivot pins for pivotally connecting the inner ends of the sections of said grain pan to each other, and said pivot pins projecting through said slots, a pair of t upstanding ad ustable supporting arms pivotally mounted at their lower ends on the exterior of the housing, a pair of bushings rigid with the upper ends of the arms and enclosing the pins, means for retaining the bushings on the pins and means for retaining the arms in various adjustable positions. v

3. In a threshing machine, a separator housing. a grain pan within the housing having front and rear sections, hangers pivoted at their upper ends to the housing and at their lower ends to the remote ends of the pan sections, pivot pins connecting the adjacent ends of the pan sections, supporting arms pivoted at their lower ends to the housing and at their upper ends to the pivot pins and means for longitudinally reciprocating the pan.

DENNIS COCKRELL.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 774,125 Winder Nov. 1, 1904 1,333,278 Pekrul Mar. 9, 1920 1,708,286 Turner Apr. 9, 1929 1,905,393 Green Apr. 25, 1933

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