Corn head gear box

A gear box for a corn head of a combine comprising

• a first casing having
• a top wall, a bottom wall, a front wall, a back wall and a pair of laterally opposite side walls, said walls defining a hollow interior cavity and
• first and second pairs of aligned openings in said front and back walls, respectively,
• a pair of parallel snapping roll shafts extending in a fore and aft direction on axes defining a horizontal plane
• a bearing mounted in each of said first and second pairs of openings and rotatably supporting said snapping roll shafts
• a pair of parallel gathering chain sprocket shafts,
• a pair of vertical openings in said top wall,
• a pair of closures for said vertical openings releasably secured to said top wall and each presenting a central vertical hole
• a bearing in each of said vertical holes rotatably mounting said sprocket shafts on laterally spaced vertical axes spaced laterally outward of said snapping roll shafts, respectively,
• a second casing releasably secured to the rear wall of said first casing and having
• a top wall, a bottom wall, a rear wall and a pair of laterally spaced side walls defining an interior pocket open at its front, and
• horizontally aligned openings in said lateral side walls,
• an input shaft extending through said aligned openings in said lateral side walls,
• a pair of bearings mounted in said aligned openings in said lateral side walls rotatably supporting said input shaft on horizontal axis transverse to said snapping roll shafts and transverse to said sprocket shafts,
• first power transmitting gearing on said input shaft and snapping roll shafts operable to transmit torque from said input shaft to said snapping roll shafts and
• second power transmitting gearing on said snapping roll shafts and said sprocket shafts operable to transmit torque from said snapping roll shafts to said sprocket shafts.