Patent US3815345A successfully refreshed from Google Patents.
US3815345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hay roll forming machine
Assignee: Unisys Corp
•
Filing: 1973-04-24
•
Granted: 1974-06-11
•
Expires: 1993-04-24
Abstract
Abstract A machine to form compact rolls of hay of substantial size by picking up a swath or windrow of hay and the like from a field, engage it by cooperating upper and lower endless flexible aprons driven in suitable directions to coil the hay into a compact roll while supported upon floor means mounted stationarily in the bottom of the machine to effect baling of all the hay without loss upon the ground. When the roll type bale of hay reaches a predetermined diameter, the upper apron raises and driving movement of the same stops while the bale is discharged by movement of the lower apron rearwardly in the machine, or the machine can retain and transport the bale to a desired location, if desired. The lower course of the upper apron is initially supported in a desired configuration relative to the lower apron by guide means which include movable auxiliary means arranged to be disengaged by said upper apron when the bale reaches a predetermined diameter.
Inventors
- 👤 A Mast
- 👤 E Eggers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:58
CPC Classifications
A; A01; A01F; A01F15/00; A01F15/07; A01F2015/078; A01F2015/0795
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
280 words
A mobile hay roll forming machine comprising in combination a frame, wheels mounted upon said frame to render said frame mobile over a swath of hay lying upon a field to form the same into a compact roll, pickup means operable adjacent the forward portion of said frame to pick up said swath, an endless lower flexible apron supported by a lower portion of said frame and having an upper course extending substantially horizontally therein and positioned to receive at the forward end thereof hay picked up from a field by said pickup means, drive means supported by said frame and connected to said lower endless flexible means to move said upper course thereof rearwardly to support a roll of hay thereon as the same is being formed during operation of said machine, an endless upper apron, supporting means on said frame for said upper apron arranged to position the lower course of said upper apron above said upper course of said lower flexible apron and spaced therefrom to define an initial roll-forming cavity between said courses of said aprons, said supporting means including guide members positioned adjacent opposite sides of said frame and engageable with opposite edges of said lower course of said upper apron to define a portion of said rollforming cavity of a pre-determined height substantially less than the diameter of a roll of hay of ultimate maximum size to be formed in said machine, and said supporting means for said upper apron including yieldable means operable to permit said lower course of said upper apron to be raised from said members when the diameter of said roll increases beyond the height of said initial roll-forming cavity.
Claim 2
Dependent Claim
280 words
A mobile hay roll forming machine comprising in combination a frame, wheels mounted upon said frame to render said frame mobile over a swath of hay lying upon a field to form the same into a compact roll, pickup means operable adjacent the forward portion of said frame to pick up said swath, an endless lower flexible apron supported by a lower portion of said frame and having an upper course extending substantially horizontally therein and positioned to receive at the forward end thereof hay picked up from a field by said pickup means, drive means supported by said frame and connected to said lower endless flexible means to move said upper course thereof rearwardly to support a roll of hay thereon as the same is being formed during operation of said machine, an endless upper apron, supporting means on said frame for said upper apron arranged to position the lower course of said upper apron above said upper course of said lower flexible apron and spaced therefrom to define an initial roll-forming cavity between said courses of said aprons, said supporting means including guide members positioned adjacent opposite sides of said frame and engageable with opposite edges of said lower course of said upper apron to define a portion of said rollforming cavity of a pre-determined height substantially less than the diameter of a roll of hay of ultimate maximum size to be formed in said machine, and said supporting means for said upper apron including yieldable means operable to permit said lower course of said upper apron to be raised from said members when the diameter of said roll increases beyond the height of said initial roll-forming cavity.
Claim 3
Dependent Claim
64 words
The machine according to claim 1 in which said upper apron comprises a pair of endless link-type chains defining opposite edges thereof and having similar elongated members extending therebetween and connected thereto at evenly spaced locations along said chains, said guide means of supporting means projecting inwardly from the opposite sides of said machine a sufficient distance to be engaged respectively by said chains.
Claim 4
Dependent Claim
21 words
The machine according to claim 2 in which said guide members have smoothly rounded upper edges engaged slidably by said chains.
Claim 5
Dependent Claim
65 words
The machine according to claim 2 further including means movably interconnecting said guide members of said supporting means to opposite sides of said frame of said machine to permit said members to be movable away from said chain-supporting positions thereon to retracted positions when the diameter of a roll of hay is great enough to cause the ends of said roll to engage said members.
Claim 6
Dependent Claim
51 words
The machine according to claim 4 further including spring means engageable with said guide members and operable normally to urge said members outwardly from said sides of said frame of said machine to chain-supporting position and said spring means being yieldable to permit movement of said members to said retracted positions.
Claim 7
Dependent Claim
100 words
The machine according to claim 5 in which said machine includes side plates carried by opposite sides of said frame and having openings therein complementary in size to said guide members and said guide members being pivotally interconnected to said frame adjacent the lower edges of said guide members for movement relative to the lower edges of said openings and said guide members when engaged by the ends of a roll of hay being moved thereby into said openings to dispose said members in noninterfering position relative to said roll while being formed within the space between said side plates.
Claim 8
Dependent Claim
73 words
The machine according to claim 4 in which said guide members extend upwardly and inwardly relative to the sides of said frame to provide camming surfaces engageable by upwardly moving portions of the ends of a roll of hay while being rotated and coiled within said roll-receiving cavity, thereby moving said guide members from said chain-supporting positions thereof to said retracted positions when said ends of said roll of hay engage said members.
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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |