Title: Crop-feed arrangement for hay baler

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Claims: We claim:

1. A baling apparatus comprising:

a housing displaceable along the ground in a travel direction;

a pickup drum at the front of said housing and rotatable about an axis transverse to said direction;

a channel member extending transverse to said direction in back of said drum;

a baling chamber on said housing at one end of said channel member;

drive means on said housing operatively connected to said drum for rotating said drum and thereby lifting crop off the ground and displacing the crop back toward said channel member;

an oscillatable member on said housing extending transversely to said direction above and between said drum and said channel member;

a plurality of pusher elements on said member displaceable from said drum to said channel member;

eccentric means operable by said drive means and coupling means connecting said eccentric means to said oscillatable member for oscillating said elements at a relatively slow rate to displace said crop from said drum into said channel member and at a relatively rapid rate away from said channel member, said coupling means including a pair of arms pivoted on said housing at one end and each connected at their other end to said oscillatable member, and a crank connected to said oscillatable member, said eccentric means including a crankshaft lying intermediate the ends of said arms and rotatable in such direction that said crank lies between said crankshaft and said oscillatable member during oscillation of said elements toward said channel member and said crankshaft lies between said crank and said oscillatable member during oscillation of said elements back from said channel member;

means on said housing in said channel member for displacing crop therealong into said chamber;

means in said chamber for forming bales of said crop; and

means including at least one spring interposed between said elements and said crankshaft whereby said elements can be restrained from motion without stopping said crankshaft, said drum being provided with a plurality of tines, said elements being engageable between said tines.

2. The apparatus defined in claim 1 wherein each of said elements is connected to said member by one such spring.

3. The apparatus defined in claim 2 wherein said member is a shaft and said elements are limitedly rotatable on said shaft, said springs each being a torsion spring having one end engaged in said shaft and another end engaging the respective element.

4. The apparatus defined in claim 1 wherein said drive means is provided with a first crank arm and said crankshaft is provided with a second crank arm, said apparatus further comprising an elastomeric body carried on one of said crank arms and engaging the other arm in loose force-transmitting relationship.

5. The apparatus defined in claim 4 wherein the other of said arms is formed at least partially as a channel loosely receiving said body.

Other info:

Inventors: Schulze, Rudolf (Neustadt, DT)
Schumacher, Horst (Langburkersdorf, DT)
Simora, Ferdinand (Bonnewitz, DT)

Application Number: 489171
Filing Date: 1974-07-17
Publication_date: 1977-03-01
Assignee: VEB Kombinat Fortschritt (Neustadt in Sachsen, DT)
Primary Class(es): 56/341 100/189
Other Classes:
US Patent Ref:

2725009	Nov, 1955	Bornzin	100/189.
2909887	Oct, 1959	Claas	56/341.
2950670	Aug, 1960	Nolt et al.	100/142.
2950807	Aug, 1960	McDuffie	198/107.
3464347	Sep, 1969	Morris	100/189.

Other Refs: 226,532

Mar, 1963	OE

Primary Examiner: Kinsey, Russell R.
Assistant Examiner:
Attorney: Ross; Karl F., Dubno; Herbert