US3717100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Movable tamping machines for railroads
Assignee: Individual
•
Filing: 1971-05-14
•
Granted: 1973-02-20
•
Expires: 1991-05-14
Abstract
Abstract A tamping machine for railroad beds comprises a car running on the rails of the railway and a plurality of individually operable tamping devices mounted on a common carrier in the car and means for moving the carrier relative to the car so that while they are in operation the tamping devices are moved rearwardly relative to the car at the same speed that the car is moving forwardly on the rails. The tamping devices are thus stationary relative to the ground while operating even though the car is moving. When a tamping device has completed its tamping operation, it is raised and moved forwardly in the car to a position where it is again lowered to operating position. Rapid and continuous tamping of the road bed is thereby achieved.
Inventors
- 👤 H Sieke
- 👤 R Sieke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:47
CPC Classifications
E; E01; E01B; E01B27/00; E01B27/12; E01B27/13; E01B27/16
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
222 words
A tamping machine for railway roadbeds comprising a vehicle movable along the rails, means for moving said vehicle along the rails at a selected speed, carrier means provided in said vehicle, a plurality of tamping devices carried in selected fixed relation on said carrier means, each of said tamping devices comprising a tamping tool and driving means for operating said tool, said carrier means including at least one rotatable wheel means mounted on said vehicle for rotation about a horizontal axis transverse to the direction of movement of the vehicle and means for rotating said wheel means to move said tamping devices continuously in a closed circuit comprising in sequence a lower portion in which said tamping devices are in operative position relative to said roadbed and are moved rearwardly of the vehicle at a speed equal to the forward speed of the vehicle, a rear portion in which said tamping devices are raised to inoperative position, an upper portion in which said tamping devices are moved forwardly of the vehicle and a forward portion in which said tamping devices are lowered toward operative positions, means for mounting each of said tamping devices individually on said carrier to position said device with its tamping tool down, and means for individually operating said tamping devices when in operative position to tamp said roadbed.
Claim 2
Dependent Claim
222 words
A tamping machine for railway roadbeds comprising a vehicle movable along the rails, means for moving said vehicle along the rails at a selected speed, carrier means provided in said vehicle, a plurality of tamping devices carried in selected fixed relation on said carrier means, each of said tamping devices comprising a tamping tool and driving means for operating said tool, said carrier means including at least one rotatable wheel means mounted on said vehicle for rotation about a horizontal axis transverse to the direction of movement of the vehicle and means for rotating said wheel means to move said tamping devices continuously in a closed circuit comprising in sequence a lower portion in which said tamping devices are in operative position relative to said roadbed and are moved rearwardly of the vehicle at a speed equal to the forward speed of the vehicle, a rear portion in which said tamping devices are raised to inoperative position, an upper portion in which said tamping devices are moved forwardly of the vehicle and a forward portion in which said tamping devices are lowered toward operative positions, means for mounting each of said tamping devices individually on said carrier to position said device with its tamping tool down, and means for individually operating said tamping devices when in operative position to tamp said roadbed.
Claim 3
Dependent Claim
222 words
A tamping machine for railway roadbeds comprising a vehicle movable along the rails, means for moving said vehicle along the rails at a selected speed, carrier means provided in said vehicle, a plurality of tamping devices carried in selected fixed relation on said carrier means, each of said tamping devices comprising a tamping tool and driving means for operating said tool, said carrier means including at least one rotatable wheel means mounted on said vehicle for rotation about a horizontal axis transverse to the direction of movement of the vehicle and means for rotating said wheel means to move said tamping devices continuously in a closed circuit comprising in sequence a lower portion in which said tamping devices are in operative position relative to said roadbed and are moved rearwardly of the vehicle at a speed equal to the forward speed of the vehicle, a rear portion in which said tamping devices are raised to inoperative position, an upper portion in which said tamping devices are moved forwardly of the vehicle and a forward portion in which said tamping devices are lowered toward operative positions, means for mounting each of said tamping devices individually on said carrier to position said device with its tamping tool down, and means for individually operating said tamping devices when in operative position to tamp said roadbed.
Claim 4
Dependent Claim
222 words
A tamping machine for railway roadbeds comprising a vehicle movable along the rails, means for moving said vehicle along the rails at a selected speed, carrier means provided in said vehicle, a plurality of tamping devices carried in selected fixed relation on said carrier means, each of said tamping devices comprising a tamping tool and driving means for operating said tool, said carrier means including at least one rotatable wheel means mounted on said vehicle for rotation about a horizontal axis transverse to the direction of movement of the vehicle and means for rotating said wheel means to move said tamping devices continuously in a closed circuit comprising in sequence a lower portion in which said tamping devices are in operative position relative to said roadbed and are moved rearwardly of the vehicle at a speed equal to the forward speed of the vehicle, a rear portion in which said tamping devices are raised to inoperative position, an upper portion in which said tamping devices are moved forwardly of the vehicle and a forward portion in which said tamping devices are lowered toward operative positions, means for mounting each of said tamping devices individually on said carrier to position said device with its tamping tool down, and means for individually operating said tamping devices when in operative position to tamp said roadbed.
Claim 5
Dependent Claim
43 words
A tamping machine according to claim 1, in which said carrier means comprises a large wheel on the periphery of which said tamping devices are mounted, said wheel being mounted in said vehicle for rotation about a horizontal axis transverse to said vehicle.
Claim 6
Dependent Claim
47 words
A tamping machine according to claim 1, in which said carrier means comprises a link chain running on two wheels spaced forwardly and rearwardly respectively in said vehicle and rotating about horizontal axis transverse of said vehicle, said tamping devices being mounted on links of said chain.
Claim 7
Dependent Claim
44 words
A tamping machine according to claim 1, in which the means for operating said tamping devices comprises a hydraulic cylinder for each said tamping device and control means for selectively supplying pressure fluid to said cylinders to actuate said tamping devices individually and selectively.
Claim 8
Dependent Claim
29 words
A tamping machine according to claim 1, comprising means for guiding and holding said tamping devices in a selected direction with their tamping tools down when in operative position.
Claim 9
Dependent Claim
25 words
A tamping machine according to claim 5, in which said guiding and holding means comprise spaced guiding rails along which said tamping devices are movable.
Claim 10
Dependent Claim
64 words
A tamping machine according to claim 5, in which said carrier means is a large wheel on which said tamping devices are pivotally mounted and in which said guiding and holding means comprises a first sprocket coaxial with said wheel, a second sprocket fixed to each said tamping device and coaxial with said pivotal mounting and a chain interconnecting said first and second sprockets.
Claim 11
Dependent Claim
43 words
A tamping machine according to claim 5, in which said carrier means comprises a link chain on the links of which said tamping devices are mounted and in which said guiding and holding means comprises means for guiding the links of said chain.
Claim 12
Dependent Claim
61 words
A tamping machine according to claim 5, in which said carrier means and said guiding and holding means comprises two large wheels rotatable on horizontal axis transverse of said vehicle and disposed vertically one above another, each said tamping device being pivotally connected to both of said wheels in such a manner that it is held vertical when in operative position.
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) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |