Patent US3599724A successfully refreshed from Google Patents.
US3599724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rock picker
Assignee: Individual
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Filing: 1969-08-08
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Granted: 1971-08-17
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Expires: 1989-08-08
Abstract
Abstract A pickup reel has teeth and retainers which move upwardly when an obstruction is engaged. They are positioned by outer and inner cam tracks for optimum operational positioning. The reel is positioned by hydraulic piston and cylinder assemblies which also dump the stone bucket when the lowermost position of the reel is reached and the piston and cylinder assemblies are further extended.
Inventors
- 👤 Harry Fraske
- 👤 Alfred Fraske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:16
CPC Classifications
A; A01; A01B; A01B43/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
213 words
A rock picker comprising in combination a chassis, a stone bucket in said chassis mounted for stone-receiving and stonedumping positions, a rock-picking reel assembly journaled for rotation in said chassis in advance of said bucket, means mounting said reel assembly in said chassis, said reel assembly including a centRal axial member, sets of arms extending radially from each end thereof and being rotatable therewith, and a pickup assembly between the ends of corresponding arms, said pickup assembly including a transverse member situated between corresponding arms, sets of pickup teeth secured to said members, and means mounting said transverse members to said arms, said means including first and second linkage members pivotally secured by one end thereof to said arms and by the other ends thereof to a bellcrank secured to said members, and spring means operatively connected to said pickup assembly normally biassing said teeth to the rock pickup position, said linkage members causing said pickup teeth to move substantially vertically when an obstruction is engaged therewith and retainer teeth pivotally mounted intermediate the ends thereof to adjacent said members, and diverging outwardly from said pickup teeth, and spring means operatively connected to the inner ends of said retainer teeth normally mounting said retainer teeth at a predetermined distance from said pickup teeth.
Claim 2
Dependent Claim
213 words
A rock picker comprising in combination a chassis, a stone bucket in said chassis mounted for stone-receiving and stonedumping positions, a rock-picking reel assembly journaled for rotation in said chassis in advance of said bucket, means mounting said reel assembly in said chassis, said reel assembly including a centRal axial member, sets of arms extending radially from each end thereof and being rotatable therewith, and a pickup assembly between the ends of corresponding arms, said pickup assembly including a transverse member situated between corresponding arms, sets of pickup teeth secured to said members, and means mounting said transverse members to said arms, said means including first and second linkage members pivotally secured by one end thereof to said arms and by the other ends thereof to a bellcrank secured to said members, and spring means operatively connected to said pickup assembly normally biassing said teeth to the rock pickup position, said linkage members causing said pickup teeth to move substantially vertically when an obstruction is engaged therewith and retainer teeth pivotally mounted intermediate the ends thereof to adjacent said members, and diverging outwardly from said pickup teeth, and spring means operatively connected to the inner ends of said retainer teeth normally mounting said retainer teeth at a predetermined distance from said pickup teeth.
Claim 3
Dependent Claim
62 words
The device according to claim 1 which includes outer and inner cam tracks situated adjacent the ends of said reel assembly and cam followers operatively connected to each of said pickup assemblies and engaging the inner surface of said outer tracks and the outer surface of said inner tracks, and resilient cushion means at the entrance of each of said outer tracks.
Claim 4
Dependent Claim
105 words
The device according to claim 1 which includes a pair of arms pivotally mounted by one end thereof to said chassis and inclining upwardly and forwardly, said reel assembly being journaled for rotation between the outer ends of said arms, and means to raise and lower said reel assembly within limits, said means including an hydraulic piston and cylinder assembly operatively extending between said bucket and said arms, means on said chassis engageable by said arms when said reel assembly is in the lowermost position, said piston and cylinder assembly rotating said bucket around the pivotal mounting thereof when said arms are engaging said stops.
Claim 5
Dependent Claim
105 words
The device according to claim 2 which includes a pair of arms pivotally mounted by one end thereof to said chassis and inclining upwardly and forwardly, said reel assembly being journaled for rotation between the outer ends of said arms, and means to raise and lower said reel assembly within limits, said means including an hydraulic piston and cylinder assembly operatively extending between said bucket and said arms, means on said chassis engageable by said arms when said reel assembly is in the lowermost position, said piston and cylinder assembly rotating said bucket around the pivotal mounting thereof when said arms are engaging said stops.
Claim 6
Dependent Claim
215 words
In a rock picker which includes a chassis, and a stone bucket in said chassis mounted for stone receiving and stone dumping positions; a reel assembly journaled for rotation in said chassis in advance of said bucket, means mounting said reel assembly in said chassis, said reel assembly including a central axial member, sets of arms extending radially from each end thereof and being rotatable therewith and pickup assemblies between the ends of corresponding arms, said pickup assemblies including a transverse member situated between corresponding arms, sets of pickup teeth secured to said members, and means mounting said transverse members to said arms, said means including first and second linkage members pivotally secured by one end thereof to said arms and by the other ends thereof to a bellcrank secured to said member and tension spring means operatively connected to said pickup assembly normally biassing said teeth to the rock pickup position, said linkage members causing said pickup teeth to move substantially vertically when an obstruction is engaged thereby and retainer teeth pivotally mounted intermediate the ends thereof to adjacent said members, and diverging outwardly from said pickup teeth, and spring means operatively connected to the inner ends oF said retainer teeth normally mounting said retainer teeth at a predetermined distance from said pickup teeth.
Claim 7
Dependent Claim
215 words
In a rock picker which includes a chassis, and a stone bucket in said chassis mounted for stone receiving and stone dumping positions; a reel assembly journaled for rotation in said chassis in advance of said bucket, means mounting said reel assembly in said chassis, said reel assembly including a central axial member, sets of arms extending radially from each end thereof and being rotatable therewith and pickup assemblies between the ends of corresponding arms, said pickup assemblies including a transverse member situated between corresponding arms, sets of pickup teeth secured to said members, and means mounting said transverse members to said arms, said means including first and second linkage members pivotally secured by one end thereof to said arms and by the other ends thereof to a bellcrank secured to said member and tension spring means operatively connected to said pickup assembly normally biassing said teeth to the rock pickup position, said linkage members causing said pickup teeth to move substantially vertically when an obstruction is engaged thereby and retainer teeth pivotally mounted intermediate the ends thereof to adjacent said members, and diverging outwardly from said pickup teeth, and spring means operatively connected to the inner ends oF said retainer teeth normally mounting said retainer teeth at a predetermined distance from said pickup teeth.
Claim 8
Dependent Claim
63 words
The device according to claim 5 which includes outer and inner cam tracks situated adjacent the ends of said reel assembly and cam followers operatively connected to each of said pickup assemblies and engaging the inner surface of said outer tracks and the outer surface of said inner tracks, and resilient cushion means at the entrance end of each of said outer tracks.
Claim 9
Dependent Claim
105 words
The device according to claim 5 which includes a pair of arms pivotally mounted by one end thereof to said chassis and inclining upwardly and forwardly, said reel assembly being journaled for rotation between the outer ends of said arms, and means to raise and lower said reel assembly within limits, said means including an hydraulic piston and cylinder assembly operatively extending between said bucket and said arms, means on said chassis engageable by said arms when said reel assembly is in the lowermost position, said piston and cylinder assembly rotating said bucket around the pivotal mounting thereof when said arms are engaging said stops.
Claim 10
Dependent Claim
105 words
The device according to claim 6 which includes a pair of arms pivotally mounted by one end thereof to said chassis and inclining upwardly and forwardly, said reel assembly being journaled for rotation between the outer ends of said arms, and means to raise and lower said reel assembly within limits, said means including an hydraulic piston and cylinder assembly operatively extending between said bucket and said arms, means on said chassis engageable by said arms when said reel assembly is in the lowermost position, said piston and cylinder assembly rotating said bucket around the pivotal mounting thereof when said arms are engaging said stops.
References Cited (Backward Citations)
US2732672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |