Patent GB-376626-A (GB)
Title: Improvements in harvester threshers
IPC: A01D41/14
Filed: 1931-12-03
Abstract: 376,626. Harvesting and thrashing machines. INTERNATIONAL HARVESTER CO., 606, South Michigan Avenue, Chicago, U.S.A.-(Assignees of Welty, A. B. ; 542, Brier Street, Kenilworth, Illinois, U.S.A.) Dec. 3, 1931, No. 33557. Convention date, June 22. [Classes 6 (iii) and 58.] The thrashing machine part of a combined harvesting and thrashing machine carries at one side a vertical post 28 on which the harvester part pivots when that part is folded alongside the thrashing machine for convenience in transport, and to which counterbalancing devices for neutralizing the weight of the harvester platform and its associated mechanism are secured. The thrashing part 15 is mounted on an axle 16 carried on ground wheels 17, 18, and has a feeder house arranged at its forward end provided with a raised flared hood 19 having T-shaped guide rails fitted on its front and rear edges. The main frame 21 of the thrasher 15 is extended forward to provide a support for a motor 22 and to take the pivot 23 of a front wheel truck 24 that is provided with a draught attachment 25 for a tractor. The axle 16 projects beyond the grainward wheel 18 and carries a bracket 26 that has on its front side a vertical sleeve 27 in which a standard 28 is free to rotate. A sleeve, pinned to the standard, prevents downward movement through the sleeve 27 and the upper end of the standard is rotatably mounted in a bracket 31 extending from the upper part of the thrasher. The lower end of the standard carries an outwardlyextending bracket 32 carrying an upwardlyextending arm 35 and having an horizontal pin 33 on which a bracket 34, Fig. 10, is pivoted. A dead axle 37 fits into a socket in this bracket and at its outer end carries an upwardlyextending arm 38. A sleeve 40 rotatably carried on the axle 37 carries forwardly-extending bars 4 on which transverse bars 43, 44 supporting the harvester platform 45 are mounted. Vertical angle-bars 48 at the rear of the platform carry the backboard and are connected at their upper ends by links 52 to the arms 35, 38. The outer end of the harvester is supported by a grain wheel 65 on an axle 64 that can be tilted about a pivot on a bracket 57 to cause the wheel to run in an inclined plane when the harvester is in its folded position. The bracket 57 is attached by a vertical pivot 56 to an arm 55 extending rearwardly from a sleeve 54 pinned to the dead axle 37, a latching bolt being provided to hold the members 55, 57 alongside each other when the harvester is in working position. A diagonal brace bar 68 is fitted between the thrasher and the outer end of the harvester when the latter is operating. The reel 74 is mounted in brackets supported on the angle bars 48. Grain, cut by the knife 76, is carried by the usual platform conveyer to an elevator consisting of two spaced-apart endless band conveyers extending up an inclined spout frame 77. The frame at its upper end is mounted on a shaft 80 which has a fore- and-aft sliding movement in guides 81 themselves free to slide up and down the vertical T-shaped rails 20 at the sides of the feeder house. To counterbalance the harvester platform and its associated parts tension springs 121 hung from a bracket at the top of the standard 28 are attached to a chain 117 passing round an eccentrically mounted oval-shaped pulley wheel compensator 116 mounted in a yoke 113 pivoted in brackets 111 on one of the bars 41 carrying the platform. The other end of the chain is attached to a rod 118 also secured to the top of the standard. The compensator 116 maintains the tension of the springs 121 constant in all positions of the platform. To fold the harvester for transport the spout frame 77 is lifted to run the brackets 81 off the rails 20, the wheel 65 freed for castoring by unlatching the arm 57 and then tilted, the platform raised to its highest position by the usual lifting arm 110, and the brace 68 disconnected ; the harvester is then pushed backwards round the standard 28 and the platform pushed up still higher being secured in this position by a hooked rod 128 engaging an eye 127 on the sleeve 40, and a rod 123 engaging a hole in a bracket on the platform frame.