. Bulletin. Agricultural experiment stations -- United States; Agriculture -- United States. 21 they have the advantage of yielding sHghtly while a bundle is being tied. This is important, as many ears would otherwise be knocked from the stalks ])y jamming the stalks ])eliind the needle. The needle and tli(> knotter form the l)inding attachments. They are in nearly all cases of the same pattern as are those of the grain binders of the same makes, but are made heavier to meet the require- ments of the work. The packers on these machines (fig. 14) must have such a motion as to travel toward t
. Bulletin. Agricultural experiment stations -- United States; Agriculture -- United States. 21 they have the advantage of yielding sHghtly while a bundle is being tied. This is important, as many ears would otherwise be knocked from the stalks ])y jamming the stalks ])eliind the needle. The needle and tli(> knotter form the l)inding attachments. They are in nearly all cases of the same pattern as are those of the grain binders of the same makes, but are made heavier to meet the require- ments of the work. The packers on these machines (fig. 14) must have such a motion as to travel toward the back of the machine as long as they project above the ])inding deck,' their travel thru the deck being fast and of short duration. There is one machine on the market which does not use })ack- ers at all, l)ut has in- stead several chains with collapsing fingers. While the l^imdle is being formed, these fingers as- sume a position perpen- dicular to their chains, being held so by the guides over which they travel. As soon, how- ever, as the needle moves, these guides no longer bear against the fingers, which collapse when pres- sure is brought to bear against them. This pre- vents their jamming the incoming corn against the rib of the needle while a bundle is being tied and avoids the break- ing off of ears that would often occur otherwise. When the bundle has be'en bound the two or three discharge arms on the binding shaft have reached the back side of the bundle, and by the continuous motion of the shaft the arms force the bundle off the deck and discharge it, after which the compressor hook returns automatically to its place and the binding shaft stops until another bundle is formed, when the operation is repeated. Figure 14 shows the binding mechanism and the general arrangement of the several parts referred Fig. 14.—Binder attachment: a, needle; 66, packers; c, knot- ter cam; dd, compressor hook; eee, discharge arms; /, Butt table or butt shoe; g, twine Plea
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