Corn harvester

1,093,539. Harvesters. MASSEY-FERGUSON Ltd. No. 19, 1964 [Dec. 5, 1963], No. 47071/64. Heading A1F. A row crop harvester header attachment 6 adapted to be attached to a conventional combine harvester 2 comprises snapping units 10 the outer two of which are adjustable laterally of the attachment relative to the inner two units, snout and hood panel assemblies 12, 14, and a cross auger 52 and conveyer 22. Drive to the conveyer, auger and snapping units is transmitted from a power source on a combine by way of chain and sprocket mechanism (Fig. 14, not shown). The conveyer 22 (Fig. 7) passes over an idler drum 26 mounted on an arm 30 which is longitudinally adjustable and pivotable about a pivot 40 to vary the height of the conveyer. The attachment may be raised or lowered by means of hydraulic jacks 18, and has a number of parking jacks 20. Snapping units. Each unit comprises a framework, attached by means of brackets 80 (Fig. 6) to a support beam 88 of the main frame of the attachment, two snapping rolls 100 mounted on the framework beneath snapping plates 132, and gathering chains 148. The rolls of the inner snapping units are driven from a shaft 70 via automatically disengageable clutches 122, which disengage if the rolls should encounter an obstruction, chains, shafts 118 and bevelled gears 104, 116. The outer units are also driven by the shafts 118 via connections 120 which can be adjusted to accommodate adjustment of the outer snapping units. The rolls are mounted at their forward ends in bearings 106 (Fig. 10) which are hingedly connected to a plate 110 secured to the framework by bolt 114 and having therein an elongated slot 112 so as to allow lateral adjustment of the rolls to receive various crops. The gathering chains are engaged by sprockets 134, driven by a shaft 136 through automatically disengageable clutches, and by idler sprockets 142 which are mounted on longitudinally adjustable carriages 144. The shafts 158 through which drive is transmitted to the sprockets 134 are interconnected by connections 160 similar to connections 120. Hood and snout panels. The crop rows are guided into the snapping units by hood and snout panel assemblies 12, 14. Of the assemblies 14 shown in Fig. 1 two comprise snout panels 174 pivotally connected at 180 for telescoping when the snapping units are adjusted laterally, and similarly the hood panels 188 are adapted to be telescoped. The assemblies are pivotally connected to the framework of the units at 178, 198,