US3858361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rail grinding machine
Assignee: Chemetron Corp
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Filing: 1974-01-17
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Granted: 1975-01-07
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Expires: 1994-01-17
Abstract
Abstract Apparatus for grinding surfaces adjacent the ends of a pair of rail sections to be welded together comprising means for holding the rail sections in end-to-end aligned, longitudinal relation, abrasive grinding means movable about an axis of rotation extending laterally of the rail sections and at an acute angle relative to the longitudinal axis thereof mounted on carriage means slidable longitudinally of the rail section, and pressure means for moving the abrasive member into contact with the surface of the rail sections during longitudinal travel by the carriage.
Inventors
- 👤 Stephen G Behne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:58
CPC Classifications
B; B24; B24B; B24B19/00; B24B19/004
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
127 words
Apparatus for grinding surfaces adjacent the ends of rail sections to be welded together comprising clamping means for holding said sections in end-to-end longitudinal alignment; abrasive grinding means comprising a plurality of abrasive wheels mounted side by side on a common axle and driven to rotate around an axis of rotation extending laterally transverse of said rail sections at an acute included angle relative to the longitudinal axis thereof; carriage means for moving said grinding means longitudinally of said rail section toward and away from an end thereof and pressure means for moving said grinding means normal to said axis of rotation thereof toward and away from surfaces on said rail sections into and out of grinding engagement therewith as said grinding means moves toward said end.
Claim 2
Dependent Claim
127 words
Apparatus for grinding surfaces adjacent the ends of rail sections to be welded together comprising clamping means for holding said sections in end-to-end longitudinal alignment; abrasive grinding means comprising a plurality of abrasive wheels mounted side by side on a common axle and driven to rotate around an axis of rotation extending laterally transverse of said rail sections at an acute included angle relative to the longitudinal axis thereof; carriage means for moving said grinding means longitudinally of said rail section toward and away from an end thereof and pressure means for moving said grinding means normal to said axis of rotation thereof toward and away from surfaces on said rail sections into and out of grinding engagement therewith as said grinding means moves toward said end.
Claim 3
Dependent Claim
59 words
The grinding apparatus of claim 1 including means mounting said grinding means and said clamping means on said carriage means for longitudinal movement therewith, said clamping means including a pair of clamping rolls on opposite sides of one of said rail sections biased toward one another to restrain said section against lateral movement during longitudinal travel of said carriage.
Claim 4
Dependent Claim
70 words
The grinding apparatus of claim 2 including second clamping means independent of said first mentioned clamping means and carriage means for holding the other of said rail sections in fixed position against transverse, lateral and longitudinal movement as said means moves longitudinally, said second clamping means including a pair of clamping rolls on opposite sides of said other rail section biased toward one another to restrain movement of said section.
Claim 5
Dependent Claim
21 words
The grinding apparatus of claim 3 including motor means for power driving at least one roll of said second clamping means.
Claim 6
Dependent Claim
23 words
The grinding apparatus of claim 2 including motor means for power driving at least one clamping roll of said first mentioned clamping means.
Claim 7
Dependent Claim
29 words
The grinding apparatus of claim 3 including brake means for locking at least one clamping roll of said second clamping means against rotation and releasable to permit rotation thereof.
Claim 8
Dependent Claim
59 words
The grinding apparatus of claim 1 including second abrasive grinding means on said carriage means for grinding surfaces on said rail sections on an opposite side with respect to surfaces ground by said first mentioned grinding means, said second grinding means including abrasive means movable around an axis of rotation normal to the longitudinal axis of said rail sections.
Claim 9
Dependent Claim
89 words
The grinding apparatus of claim 7 wherein at least one of said grinding means includes an assembly comprising a pair of rail sections engaging pressure rolls disposed in spaced relation longitudinally of said rail sections on opposite sides of the axis of rotation of said grinding means, and means adjustably supporting said grinding means for movement relative to said guide rolls in a direction normal to said rail sections for adjustably controlling the depth of grind upon movement of said grinding means into grinding engagement of said pressure means.
Claim 10
Dependent Claim
108 words
The grinding apparatus of claim 1 wherein said grinding means includes an assembly comprising a pair of pressure rolls spaced longitudinally with respect to said rail sections on opposite sides of said axis of rotation of an abrasive grinding member; said pressure means comprising a support base mounted on said carriage means for movement normal to said rail sections toward and away therefrom and supporting said pressure rolls, and grinder support means carrying said grinding member for movement normal to said rail sections toward and away therefrom relative to said base for adjustably controlling the depth of grinding action on said rail sections relative to said pressure rolls.
Claim 11
Dependent Claim
43 words
The grinding apparatus of claim 9 wherein said pressure rolls are mounted on said support base and said grinder support means is slidably disposed on said base, and adjustment means for positioning said grinder support means in selected positions relative to said base.
Claim 12
Dependent Claim
41 words
The grinding apparatus of claim 10 wherein said adjustment means includes a frame pivotally mounted on said base and pivotally connected to said grinder support means and control means foR adjustably controlling the pivot angle between said frame and said base.
Claim 13
Dependent Claim
15 words
The grinding apparatus of claim 11 wherein said control means comprises motor driven screw means.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |