US3653330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable wagon shifter
Assignee: Aresco Trak Chief Pty Ltd
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Filing: 1969-12-24
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Granted: 1972-04-04
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Expires: 1989-12-24
Abstract
Abstract A wagon shifter or spotter arranged to run along a single rail of a railroad track and provided with a small wheel to engage the wheel of a wagon, the small wheel being carried on a hydraulic ram, and a further hydraulic ram arranged to grip the sides of the rail head, so that when the two rams operate simultaneously the rail is gripped and the wagon wheel is moved along the rail.
Inventors
- 👤 William James Yard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:02
CPC Classifications
B; B61; B61J; B61J3/00; B61J3/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
186 words
A wagon shifter comprising a chassis, rail engaging wheels, means retaining the rail engaging wheels rotatable relative to and supporting the chassis, a rail engaging clamp carried on the chassis, clamp jaws on the rail engaging clamp positionable one on each side of the rail head to clamp side faces of a rail when said rail is supporting said rail engaging wheels, an hydraulic jack carried on the chassis having a cylinder with cylinder having a movable piston rod extending therefrom, a thrust head piece, means securing the thrust head piece to the piston rod, the hydraulic cylinder guiding the thrust head piece for horizontal rectilinear movement in the direction of the rail when said rail is supporting the rail engaging wheels, a pair of head piece support wheels supporting the head piece and arranged to engage the upper surface of the rail, and a further wheel on the thrust head piece arranged to engage the outer periphery of a wagon wheel when that wagon wheel is supported by the rail to thereby urge the wagon wheel along the rail upon operation of the hydraulic cylinder.
Claim 2
Dependent Claim
186 words
A wagon shifter comprising a chassis, rail engaging wheels, means retaining the rail engaging wheels rotatable relative to and supporting the chassis, a rail engaging clamp carried on the chassis, clamp jaws on the rail engaging clamp positionable one on each side of the rail head to clamp side faces of a rail when said rail is supporting said rail engaging wheels, an hydraulic jack carried on the chassis having a cylinder with cylinder having a movable piston rod extending therefrom, a thrust head piece, means securing the thrust head piece to the piston rod, the hydraulic cylinder guiding the thrust head piece for horizontal rectilinear movement in the direction of the rail when said rail is supporting the rail engaging wheels, a pair of head piece support wheels supporting the head piece and arranged to engage the upper surface of the rail, and a further wheel on the thrust head piece arranged to engage the outer periphery of a wagon wheel when that wagon wheel is supported by the rail to thereby urge the wagon wheel along the rail upon operation of the hydraulic cylinder.
Claim 3
Dependent Claim
36 words
A wagon spotter according to claim 1 wherein said means securing the thrust head piece to the piston rod comprises a pivot pin interconnecting the outer end of the piston rod and the thrust head piece.
Claim 4
Dependent Claim
47 words
A wagon spotter according to claim 2 further comprising self-aligning bearings between the rail engaging wheels and the head piece, said further wheel on the head piece arranged to engage the outer periphery of said wagon wheel being positioned between and above said head piece support wheels.
Claim 5
Dependent Claim
157 words
A wagon spotter having a chassis, rail engaging wheels supporting the chassis, a pair of clamp arms pivoted intermediate their ends to the chassis, a clamp cylinder interconnecting corresponding ends of the clamp arms and jaws on the other ends of the clamp arms positionable one on each side of the head of a rail when said rail supports the rail engaging wheels, an hydraulic cylinder on the said chassis having its piston rOd movable in the direction of said rail, a thrust head piece having head piece support wheels arranged to engage the upper surface of said rail, means connecting the head piece to an end of said piston rod, and a further wheel on the head piece substantially in vertical alignment with the rail engaging wheels thereon and engageable against the outer periphery of the wheel of a wagon when supported by said rail to move said wagon wheel when said hydraulic cylinder is actuated.
Claim 6
Dependent Claim
157 words
A wagon spotter having a chassis, rail engaging wheels supporting the chassis, a pair of clamp arms pivoted intermediate their ends to the chassis, a clamp cylinder interconnecting corresponding ends of the clamp arms and jaws on the other ends of the clamp arms positionable one on each side of the head of a rail when said rail supports the rail engaging wheels, an hydraulic cylinder on the said chassis having its piston rOd movable in the direction of said rail, a thrust head piece having head piece support wheels arranged to engage the upper surface of said rail, means connecting the head piece to an end of said piston rod, and a further wheel on the head piece substantially in vertical alignment with the rail engaging wheels thereon and engageable against the outer periphery of the wheel of a wagon when supported by said rail to move said wagon wheel when said hydraulic cylinder is actuated.
Claim 7
Dependent Claim
30 words
A wagon spotter according to claim 10 further comprising a single hydraulic valve and conduit means connecting the valve to both the rail clamp cylinder and the hydraulic thrust cylinder.
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) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |