Nov. 5, 1946. R.' B. Hl'rcHcoc-K ETAL ¿ 2,410,500 FEEDER FOR THRESHERS ‘ .Filed Aug. 2l, 1944A 2 Sheets-Sheet 1 NOV- 5» ï946~ ~ R. B. HlTcHc-:QCK Erm.4 2,410,500 FEEDER >F011 THREsHEEs - Filed Aug. 2l. 1944 E., 2 Sheets-Sheet 2 . Patented Nov. 5', 1946 NÉTED STES 2,410,500 vorricr: FEEDER FOR THRESHERS Rex B. Hitchcock, Evanston, and Harold S. Seeber, Moline, Ill., assignors to International Harvester Company, a corporation oi’ New Jersey Application August 21, 1944, Serial N o. 550,464 l 4 Claims. This invention relates to a threshing device. More specifically it relates to a feeding means adjustable to gain access to a threshing cylinder. In the o-peration of threshing machines, par ticularly those of the traveling harvester thresher type, clogging is often encountered due to heavy growth of weeds and other material which is carried from the harvester part with the grain (Cl. 130-2’7) 2 are necesssary t0 properly illustrate the feed mechanism and its adjustment of the invention. The harvester thresher includes a thresher body Il) having side walls II and a, top wall I2. The front end of the thresher body is opened to pro « vide for the delivery of grain thereto from a har vester part I3, which is pivoted at Il on the side walls l l. A portion of a frame structure for the into the threshing cylinder. It is, therefore, de# body part lil is shown. Said frame structure in sirable to provide means for readily gaining ac 10 ciudes vertical upright angle bars I5 and I6, cess to the threshing cylinder for inspection and spaced from each other, and angle bars il and for removing material which has, or is, apt to i8 extending along the forward Aextremities of clog the threshing cylinder or prevent its efficient the side walls l I. It will be noted that the angle operation. The present invention has to do with bars il and i8 are arranged at an angle with re the provision of means whereby an operato-r may spect to each other, both bars sloping rearwardly readily gain access to the threshing cylinder from the center. The upper part of the opening without removing permanent cover plates or dis at the> front Vof the thresher body is closed by a connecting any drive mechanisms. wall I9. A hinged cover 2@ extends downwardly The principal object of the invention is to from the wall I9 substantially to the upper part mount a feeding device for a threshing mecha 20 of the harvester part I3. The broken away por nism which can be vertically moved to gain access to the threshing cylinder. Another object is to provide a, driving mecha tion of Figure 1 shows a conveyor 21| which car ries the cut grain upwardly and into the forward open-end of the harvester body I I. Curved angle nism which permits raising of a feeding means bars 22, as shown in the broken away portion of without disconnecting the driving mechanism.- 25 Figure î and in dotted lines beyond the broken Another principal object is to provide a manu away portion, support a feed plate 23 over which ally operable linkage which will lift a feeding the material discharged from the conveyor 2i is delivered to a thresher cylinder 2d, supported by the side walls I l of the thresher body and carried the linkage, until it has manually returned to 30 by a shaft 25 which is shown projecting through operating position. one side wall in Figure l. The thresher cylinder The above objects and others concerned with carries the usual thresher elements in the form the positioning of the drive mechanism and the of rub bars 26, said bars cooperating with a con construction of the adjusting linkage willbe ap cave structure including concave elements 21, as parent from the detailed description to follow. 35 shown in the broken away portion of Figure 1. In the drawings: » To assist in delivering material from the con means out of operative position and hold the mechanism, due to the inherent construction of Figure 1 is a side elevation view of a portion of -a harvester thresher showing the' rear end of veyor 2l to the thresher cylinder 2li, a rotating feed member is usually provided. Said member the harvester part with its conveying mechanism may take the form of a feed beater 28 having a and the forward end >of the thresher body with 40 plurality of feeding elements 29 extending tan its threshing cylinder; Figure 2 is a View similar to Figure 1 showing gentially therefrom, circumferentially spaced. Said elements engage thematerial and move it the feeding mechanism, which embodies the in over the plate 23 into engagement with the vention, lifted to a position which provides access threshing cylinder. The feed beater 28 is carried to the threshing cylinder. 45 by a shaft 35i which extends through slots SI Figure 3 is a section taken on the line 3-3 of formed in the side walls IIof the thresher body. Figure 1; and Said shaft at each end is provided with a cylin Figure 4 is a section taken on the line «1_-¿l of drical sleeve 32 which forms a journal for the Figure 2. „ shaft. Each sleeve 32 is carried by a supporting A large portion of the grain in this country is 50 member 33 channel-shaped in cross-section. The now lharvested by traveling machines called har over-all width of the member 33 is such that it vester threshers or combines, the grain being cut slida-bly fits between the channels I5 and I6, per and conveyed to a thresher mechanism and mitting vertical sliding movement of the rsup threshed all in one operation.v The drawings porting members with respect to the thresher show such portions of a harvester thresher as 55 body. The slots 3l are of such length as to per Y 2,410,500 3 mit the feed beater to be rai-sed to the height as shown in Figure 2, which gives ample room for gaining access to the threshing cylinder when the cover 25 is lifted to the position shown in Figure 2. A bracket 34, connected to the lower end of 4 What is claimed is: 1. In a harvesting machine having a thresher body and a harvester part pivotally connected thereto, said thresher body having an open-end, side walls and a thresher cylinder supported by the side walls adjacent the open-end, and said one of the members 33, extends outwardly and harvester part having conveyor means for feed downwardly to provide a support for an idler ing material through said open-end of the pulley 35. The idler pulley 35, in the illustra thresher body to said cylinder, a rotatable feed tion shown, is in the form of a sprocket and is in alinement with a drive pulley or sprocket 36 10 ing structure positioned between the conveyor means and the cylinder, vertical slidable sup which is provided with a hub 3l keyed to the porting means for the ends of said feeding struc shaft 3u for rotation therewith. A drive pulley 38 mounted on the` axis i4 on which the harvester ture mounted on the side walls of the thresher body, linkage for lifting thefeeding structure part is pivoted provides means for driving the feed beater through the pulley 35. The pulley 15 and the supporting means therefor, said linkage including an over-center mechanism for main 38 is journaled on a portion of the thresher body taining the feeding structure in elevated posi for rotation about a fixed axis. Said pulley may tion until released, an idler pulley carried by the >be a part of other drive mechanism and power slidable supporting means spaced from the axis may be supplied thereto by any conventional means. A drive chain 39 surrounds the pulleys 20 to the feeding structure, a drive pulley carried by the feeding structure, a power input drive pul or sprockets 35, 3E, and 38. `Other drive mech ley carried on the thresher body, said pulleys anism such as a V-belt could be used on grooved being arranged with the drive pulley on the pulleys, as the load on the feed beater is not feeding structure and the idler pulley on the such as to require a heavy positive drive mech anism. It will be noted that the pulley 35 lies 25 feeding structure supporting means lying in sub stantially vertical alinement and said drive pulley vertically beneath the pulley 3e and that the being spaced laterally from the other pulleys and pulley 3B lies horizontally in alinement With the being substantially horizontal with the feeding pulley 35, when the feed beater is raised, and horizontally in alinement with the pulley 36 structure pulley when the feeding structure is in when the feed beater is lowered. 30 operating position and being substantially hori A link 4U, having a substantially vertical por zontal with respect to the idler pulley when the tion 4I and a rearwardly inclined portion 42, is feeding structure is in raised position, said ar rangement of pulleys providing a chain path of pivotally connected at 43 to each of the sup substantially the same length during all posi porting members 33. Each of said links is piv otally connected by a pin 44 to an arm 45, said' 35 tions of adjustment of the feeding structure, and arms being rigidly secured to a transverse shaft 46 extending across the thresher body. One end of the shaft 46 extends beyond the thresher a drive chain passing over said pulleys. 2. In a harvesting machine having a thresher body and a harvester part pivotally connected thereto, said thresher body having an open-end, body, being provided with an operating exten sion 4i which may be grasped by an operator 40 side walls and a thresher cylinder supported by Y for oscillating the shaft 46, thereby oscillating the side walls adjacent the open-end, and said the lifting arms 45 from their positions as shown harvester part having conveyor means for feed in Figure 1 to the positions as shown in Figure 2. ing material .through said open-end of the The feed beater and its supporting member 33 thresher body to said cylinder, a rotatable feed are lifted by this operation. It will be noted that 45 ing structure positioned between the conveyor the pivot axes 43 of the links 40, on the mem means and the cylinder, vertical slidable sup bers 33 with respect to the pivot pins 44 and the porting means for the ends of said feeding struc ture mounted onthe side walls of the thresher axis of the shaft 46, is such that, due to the body, linkage for lifting the feeding structure and curved nature of the links, an over-center posi- . tion is attained as shown in Figure 2, thereby 50 the supporting means therefor, an idler pulley car holding the feed beater in raised position until - ried by the slidable supporting means spaced from the axis to the feeding structure, a drive pulley the operating extension 41 is moved upwardly to carried by the feeding structure, a power input lower the feed beater. drive pulley carried on the thresher body, said The arrangement of the sprockets, as pre viously described in detail, is such that the 55 pulleys being arranged with the drive pulley on the feeding structure and the idler pulley on length of the surrounding chain is not greatly the feeding'structure supporting means lying in altered during the lifting of the feed beater. substantially vertical alinement and said drive This removes the necessity of providing a resil iently mounted idler or a disconnecting drive chain during the lifting of the feed beater. pulley being spaced laterally from the other 60 pulleys and being substantially horizontal with the feeding structure pulley when the feeding structure is in operatingposition and being sub stantially horizontal with respectV to the idler means for holding the beater in adjusted posi pulley when the feeding structure is in raised tion has been explained in connection with the 65 position, said arrangement of pulleys providing description of the component parts thereof. a chain path of substantially the same length As shown in Figure 1, bolts 48, passing through during all positions of adjustment of the feeding alined openings in the angle bars l5 and I6 and structure, and a drive chain passing over said in channel sides of theV members 33, hold the [members securely in position when the feed 3. In a harvesting machine having a thresher beater is in operating position. These bolts are 70 body and a harvester lpart pivotally connected removed when it is desiredy to lift the beater for thereto, said thresher body having an open-end, access to the threshing cylinder. side walls and a thresher cylinder supportedl by It will be understood that applicants claim as the side walls adjacent the open-end, and said their invention -all modifications falling within ‘ 75 harvester part having conveyor means for feed the scope of the appended claims. The operation of applicants’ improved feed beater supporting and lifting structure and pulleys. ' ' ' ’ 5 2,410,500 ing material through said open-end of .the thresher body to said cylinder, a rotatable feed ing structure positioned between the conveyor means and the cylinder, Vertical slidable support-4 ing means for the ends of said feeding structure mounted on the side Walls of the thresher body, and linkage for lifting the feeding structure and the supporting means therefor, said linkage in cluding a transverse shaft rotatably carried by the side Walls above the feeding structure, lift ing arms extending from the shaft, links connect ing said arms with the vertical slid-able support ing means, and means to rotate .the shaft. 4. In a harvesting machine having a thresher 6 harvester part having conveyor means for feed ing material through said open-end of the thresher body to said cylinder, a rotatable feed ing structure positioned between the conveyor means and the cylinder, vertical slidable support ing means for the ends of said feeding structure mounted on the side Walls of the thresher body, and linkage for lifting .the feeding structure and the supporting means therefor, said linkage in cluding a transverse shaft rotatably carried by the side Walls above the feeding structure, lift ing arms extending from the shaft, curved links connecting said arms with the ver-tical slidable supporting means, and means to rotate the shaft body and a harvester part pivotally connected 15 until the curved links are moved into an over thereto, said thresher body having an open-end, center position with respect to the shaft. side Walls and a thresher cylinder supported by REX B. HITCHCOCK. the side Walls adjacent the open-end, and said HAROLD S. SEEBER.