US4080903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for laying ties for a railway track
Assignee: Matisa Materiel Industriel SA
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Filing: 1977-02-25
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Granted: 1978-03-28
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Expires: 1997-02-25
Abstract
Abstract The invention is a method of and apparatus for continuously laying sleepers at permanent positions at predetermined intervals on a bed of ballast for a railway track, by means of a vehicle travelling along the track, which method comprises feeding each sleeper in turn from a stock of sleepers to a laying mechanism where the sleeper is held a little above the level of the bed of ballast, removing vertical support from beneath the sleeper at a position in advance of the intended permanent position of the sleeper so that the sleeper falls onto the bed of ballast in advance of its intended permanent position, drawing the sleeper along the bed of ballast until it reaches its intended permanent position and then completely releasing the sleeper in its intended permanent position. The invention permits the sleepers to be laid with greater accuracy than when using prior apparatus.
Inventors
- 👤 Yvo Cicin-Sain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:50
CPC Classifications
E; E01; E01B; E01B29/00; E01B29/06; E01B29/09; E01B29/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
124 words
A method of continuously laying sleepers at permanent positions at predetermined intervals on a bed of ballast for a railway track, by means of a vehicle travelling along the track, which method comprises feeding each sleeper in turn from a stock of sleepers to a laying mechanism where the sleeper is held a little above the level of the bed of ballast, removing vertical support from beneath the sleeper at a position in advance of the intended permanent position of the sleeper so that the sleeper falls onto the bed ballast in advance of its intended permanent position, drawing the sleeper along the bed of ballast until it reaches its intended permanent position and then completely releasing the sleeper in its intended permanent position.
Claim 2
Independent Claim
124 words
A method of continuously laying sleepers at permanent positions at predetermined intervals on a bed of ballast for a railway track, by means of a vehicle travelling along the track, which method comprises feeding each sleeper in turn from a stock of sleepers to a laying mechanism where the sleeper is held a little above the level of the bed of ballast, removing vertical support from beneath the sleeper at a position in advance of the intended permanent position of the sleeper so that the sleeper falls onto the bed ballast in advance of its intended permanent position, drawing the sleeper along the bed of ballast until it reaches its intended permanent position and then completely releasing the sleeper in its intended permanent position.
Claim 3
Dependent Claim
31 words
A process as claimed in claim 1, wherein after the sleeper has been released, a vertical pressure is applied to it to anchor it in the ballast in its predetermined position.
Claim 4
Dependent Claim
147 words
Apparatus for continuously laying sleepers at permanent positions at predetermined intervals on a bed of ballast for a railway track, which apparatus comprises a vehicle provided with a laying mechanism for holding a sleeper a little above the level of the bed of ballast, the laying mechanism including a retractable vertical support which when retracted permits the sleeper to fall onto the bed of ballast, a displaceable stop which in operation draws the sleeper along the bed of ballast until the stop is displaced to release the sleeper in the intended permanent position of the sleeper, a conveyor for conveying sleepers in turn from a stock of sleepers to the laying mechanism and a control circuit responsive to the distance travelled by the vehicle for controlling the sequence of operations of the retractable vertical support and the displaceable stop to lay the sleepers at the predetermined intervals.
Claim 5
Dependent Claim
147 words
Apparatus for continuously laying sleepers at permanent positions at predetermined intervals on a bed of ballast for a railway track, which apparatus comprises a vehicle provided with a laying mechanism for holding a sleeper a little above the level of the bed of ballast, the laying mechanism including a retractable vertical support which when retracted permits the sleeper to fall onto the bed of ballast, a displaceable stop which in operation draws the sleeper along the bed of ballast until the stop is displaced to release the sleeper in the intended permanent position of the sleeper, a conveyor for conveying sleepers in turn from a stock of sleepers to the laying mechanism and a control circuit responsive to the distance travelled by the vehicle for controlling the sequence of operations of the retractable vertical support and the displaceable stop to lay the sleepers at the predetermined intervals.
Claim 6
Dependent Claim
21 words
Apparatus as claimed in claim 3 wherein the control circuit includes a sequential regulating member controlled according to the distance travelled.
Claim 7
Dependent Claim
17 words
Apparatus as claimed in claim 3 wherein the control circuit also controls the operation of the conveyor.
Claim 8
Dependent Claim
65 words
An apparatus for laying sleepers as claimed in claim 4, in which the laying mechanism includes at least one vertically acting ram disposed at the fulcrum of the sleeper to be laid and actuated by a motor member controlled by the control circuit, the sequential regulating member of the said circuit being adjusted so that the ram operates after the withdrawal of the support member.
Claim 9
Dependent Claim
48 words
An apparatus for laying sleepers as claimed in claim 3, in which the retractable support member for the sleeper to be laid comprises two retractable tongues extending from the end of the laying mechanism and disposed one on each side of the axis of symmetry of the sleepers.
Claim 10
Dependent Claim
89 words
An apparatus for laying sleepers as claimed in claim 3 in which the displaceable stop for the sleeper to be laid comprises two pivotable stops one disposed on each side of the axis of symmetry of the sleeper the pivotal axis of which is parallel to the longitudinal axis of the sleeper and is situated above the sleeper, and the end of the stops is in contact, in the retaining position, with the back face of the sleeper with respect to the direction of advance of the laying apparatus.
Claim 11
Dependent Claim
67 words
An apparatus for laying sleepers as claimed in claim 3, in which there is provided a retaining system for the feed of sleepers to the laying mechanism controlled by the control circuit, and the displaceable stop for the sleeper to be laid includes a contact on its contact face and connected with the said control circuit to control the supply of the sleepers during the laying operation.
References Cited (Backward Citations)
US3335841A
Cited
US3401832A
Cited
US3604358A
Cited
US3638577A
Cited
US3691957A
Cited
US3645209A
Cited
US3701320A
Cited
US3877384A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-27 | 1981-09-26 | 1982-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-27 | 1985-09-26 | 1986-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-27 | 1989-09-26 | 1990-03-28 | $7700.00 | Window Closed / Lapsed |