Patent US3552307A successfully refreshed from Google Patents.
US3552307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baler having a self-locating plunger
Assignee: Case LLC
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Filing: 1969-07-09
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Granted: 1971-01-05
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Expires: 1989-07-09
Abstract
Abstract A baler having a self-locating plunger, and a bale case defines the bale chamber and the case has an inlet opening on one side. The plunger is guided in its reciprocation in the bale case, and it carries a knife which moves against a shear bar for cutting the crop. The bale plunger is guided by a ramp or inclined surface which moves the knife into shearing relationship with the shear bar, and the knife is offset just before it reaches the shear bar and then is retained in the offset or shearing position while it moves over the shear bar. Rollers are mounted on the plunger for guiding it in the bale case, and the plunger is therefore adjustable relative to the guides and the shear bar.
Inventors
- 👤 Phillip G Venable
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:47
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/30; B30B9/3003; B30B9/3021; A; A01; A01F; A01F15/00; A01F15/04; A01F15/042; B30B15/00; B30B15/04; B30B15/041
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
289 words
In a baler having a self-locating plunger, a bale case defining a bale chamber having a longitudinal axis and having an inlet opening in one side for the entrance of hay into said bale chamber, a plunger reciprocably disposed in said bale case and being movable along said longitudinal axis and across said inlet opening for compressing hay in said bale chamber, a knife on said plunger, a shear bar adjacent said inlet opening of said bale case and having a cutting edge on the end toward said inlet opening to cooperate with said knife for cutting the hay during the advance of said plunger, a plunger guide on said bale case on the side thereof opposite said one side and extending in the direction of movement of said plunger and including an offset portion, a roller on said plunger and in rolling contact with said plunger guide and over said offset portion for controlling the location of said plunger in the plane transverse to said longitudinal axis to offset said knife into cutting position with said shear bar, the improvement comprising a plunger wear surface on said bale case and located across said inlet opening on and along the plane through said cutting edge of said shear bar, a second roller on said plunger and located to be in rolling contact with said plunger wear surface, a spring operatively connected with said second roller for yieldingly urging the first said roller into snug contact with said plunger guide, said plunger guide offset portion being a surface inclined relative to said longitudinal axis for gradually offsetting said knife toward said shear bar and against the influence of said spring dUring the advance of said plunger in said bale case.
Claim 2
Dependent Claim
289 words
In a baler having a self-locating plunger, a bale case defining a bale chamber having a longitudinal axis and having an inlet opening in one side for the entrance of hay into said bale chamber, a plunger reciprocably disposed in said bale case and being movable along said longitudinal axis and across said inlet opening for compressing hay in said bale chamber, a knife on said plunger, a shear bar adjacent said inlet opening of said bale case and having a cutting edge on the end toward said inlet opening to cooperate with said knife for cutting the hay during the advance of said plunger, a plunger guide on said bale case on the side thereof opposite said one side and extending in the direction of movement of said plunger and including an offset portion, a roller on said plunger and in rolling contact with said plunger guide and over said offset portion for controlling the location of said plunger in the plane transverse to said longitudinal axis to offset said knife into cutting position with said shear bar, the improvement comprising a plunger wear surface on said bale case and located across said inlet opening on and along the plane through said cutting edge of said shear bar, a second roller on said plunger and located to be in rolling contact with said plunger wear surface, a spring operatively connected with said second roller for yieldingly urging the first said roller into snug contact with said plunger guide, said plunger guide offset portion being a surface inclined relative to said longitudinal axis for gradually offsetting said knife toward said shear bar and against the influence of said spring dUring the advance of said plunger in said bale case.
Claim 3
Dependent Claim
38 words
The subject matter of claim 1, including an adjustable mounting operatively connecting said first roller to said plunger for selective positioning of said plunger and said knife in the said transverse plane and relative to said shear bar.
Claim 4
Dependent Claim
87 words
The subject matter of claim 2, wherein said plunger guide includes two spaced-apart portions disposed parallel to said longitudinal axis for guiding said plunger in the direction along said longitudinal axis, said portions being located on different planes and disposed contiguous to respective opposite ends of said inclined surface, said first roller and said inclined surface being respectively located on said plunger and said bale case for offsetting said plunger toward said plunger wear surface before and throughout the time that said knife reaches said shear bar.
Claim 5
Dependent Claim
42 words
The subject matter of claim 3, wherein the respective locations of said first roller and said inclined surface are related to said inlet opening for effecting the offsetting of said plunger after said plunger has moved across most of said inlet opening.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |