US3716608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for restoring railway ties
Assignee: NEUMANN G TERRASAN ERZEUGNISSE
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Filing: 1971-02-12
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Granted: 1973-02-13
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Expires: 1991-02-12
Abstract
Abstract Railway ties are restored while remaining in the railway bed and without removing the rails nor the bed plates which support the rails. After removing the spikes, the holes in the ties are bored-out by a drill passing smoothly through the spike holes in the bed plates. Metallic inserts, either a rod bent into a double U-shape or shaped into a helix are then placed in the bored-out holes and a filling of a hardening synthetic resin plastic is poured into the holes. The bed plates are raised somewhat from the ties and supported each by at least two spacing strips to form a narrow gap between the lower face of the bed plates and the top faces of the ties and then spikes are driven into the resin-filled holes, whereby the hardening synthetic resin plastic displaced by the spikes fills the gap between the bed plates and the railway ties.
Inventors
- 👤 G Neumann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:11
CPC Classifications
E; E01; E01B; E01B31/00; E01B31/20; E01B31/26; E01B9/00; E01B9/02; E01B9/04; E01B9/14; E01B9/16; F; F16; F16B; F16B13/00; F16B13/14; F16B13/141; F16B2013/147
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
180 words
Method for restoring of railway ties arranged in a railway track at the places where the bed plates are secured by spikes which pass through holes in the bed plates and enter into the railway ties, in which the method comprises the steps of drilling holes into the ties by a drill which passes smoothly through the holes in the bed plates and has a diameter which is greater than the diameter of the spikes which were in said holes, cleaning the holes produced in this manner in said ties, placing distance pieces between the lower edges of said bed plates and the upper faces of the ties to form gaps between said bed plates and said ties, placing inserts of resistant material in said holes for bracing the spikes when the same are inserted in said holes, pouring a hardening synthetic resin plastic into said holes, and then inserting said spikes in said holes, said synthetic resin plastic being employed in such a quantity that it enters into said gaps when said spikes are driven into said resin-filled holes.
Claim 2
Dependent Claim
180 words
Method for restoring of railway ties arranged in a railway track at the places where the bed plates are secured by spikes which pass through holes in the bed plates and enter into the railway ties, in which the method comprises the steps of drilling holes into the ties by a drill which passes smoothly through the holes in the bed plates and has a diameter which is greater than the diameter of the spikes which were in said holes, cleaning the holes produced in this manner in said ties, placing distance pieces between the lower edges of said bed plates and the upper faces of the ties to form gaps between said bed plates and said ties, placing inserts of resistant material in said holes for bracing the spikes when the same are inserted in said holes, pouring a hardening synthetic resin plastic into said holes, and then inserting said spikes in said holes, said synthetic resin plastic being employed in such a quantity that it enters into said gaps when said spikes are driven into said resin-filled holes.
Claim 3
Dependent Claim
30 words
Method according to claim 1, in which a hardening synthetic resin plastic is used comprising a mixture of an unsaturated polyester and an unsaturated monomer which contains catalysts and accelerators.
Claim 4
Dependent Claim
57 words
Method according to claim 1, in which a hardening synthetic resin plastic is used comprising a mixture of an unsaturated polyester and an unsaturated monomer which contains catalysts and accelerators, and that a filler is added to said mixture, said filler comprising powdered quartz, the weight proportion of said mixture to said filler being 60 : 40.
Claim 5
Dependent Claim
32 words
Method according to claim 1, in which the distance pieces placed between the edges of the bed plates and the railway ties consist of an elastic material, particularly foamed synthetic resin plastic.
Claim 6
Dependent Claim
52 words
Method according to claim 1, in which the distance pieces placed between the edges of the bed plates and the railway ties consist of an elastic material, particularly foamed synthetic resin plastic, said elastic material being at least partially soluble in the hardening synthetic plastic which has been poured into said holes.
Claim 7
Dependent Claim
30 words
Method according to claim 1, in which said insert of resistant material comprises rod-shaped articles whose lengths are shorter than the depth of the holes produced in said railway ties.
Claim 8
Dependent Claim
35 words
A method according to claim 1, in which said inserts of resistant material provide each an abutment which is engaged by the end of the spike which is inserted in the hole of the tie.
Claim 9
Dependent Claim
49 words
A method according to claim 1, in which said inserts of resistant material comprise each a single length of an iron rod bent into four spaced parallel portions which are disposed lengthwise and parallel to the axis of the spikes to be inserted in said holes in said ties.
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) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |