US3630127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tamping machine
Assignee: Individual
•
Filing: 1969-05-21
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Granted: 1971-12-28
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Expires: 1989-05-21
Abstract
Abstract A tamping machine comprises a crank drive for operating a connecting rod, a pair of piston rods driven by the connecting rod and slidably received by the machine housing, a movable cylinder loosely mounted inside the machine housing, socket joint means for engaging the top end of the movable cylinder with the connecting rod, the forward or lower end of the piston rods being removably engaged with the lower end of the movable cylinder, and a percussion piston biased against the two ends of the cylinder and having a ramrod which has at the lower end thereof the tamping foot. The cylinder can be disassembled from the machine housing by disengaging it from the piston rods at the lower end of the former. The machine has further cushion springs for absorbing shock blows and a rod for supporting the machine and preventing turning of the tamping foot.
Inventors
- 👤 Masahiro Yamato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:16
CPC Classifications
E; E02; E02D; E02D3/00; E02D3/02; E02D3/046; E02D3/068
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
255 words
A tamping machine comprising a machine housing, a crank, drive means supported on said housing for driving said crank, a connecting rod connected to and driven by said crank, a member loosely supported in the machine housing and connected to said connecting rod for being driven in reciprocation thereby, said member including an extension on the underside thereof, a cylinder loosely mounted inside the machine housing and having at the top thereof a recess receiving said extension of said member, a pair of rods secured to and extending downwardly from sAid member and being slidably supported in the machine housing, guide sleeves in said housing for slidably supporting said rods, said cylinder including a lower flanged portion extending transversely of said guide sleeves externally of said housing, means for removably fastening the lower ends of said rods to the lower flanged portion of said cylinder at respective positions below the lower end of the machine housing, said fastening means constituting the sole means for holding said member integrally with said cylinder and rods so that said rods will prevent rotation of the cylinder relative to the housing, a percussion piston slidably mounted internally of said cylinder, springs mounted in said cylinder and acting on opposing faces of said percussion piston for supporting said percussion piston against the two ends of said cylinder, a ramrod carried by said percussion piston and extending axially through an opening in the lower end of said cylinder, and a working tool rigidly connected to the lower end of said ramrod.
Claim 2
Dependent Claim
255 words
A tamping machine comprising a machine housing, a crank, drive means supported on said housing for driving said crank, a connecting rod connected to and driven by said crank, a member loosely supported in the machine housing and connected to said connecting rod for being driven in reciprocation thereby, said member including an extension on the underside thereof, a cylinder loosely mounted inside the machine housing and having at the top thereof a recess receiving said extension of said member, a pair of rods secured to and extending downwardly from sAid member and being slidably supported in the machine housing, guide sleeves in said housing for slidably supporting said rods, said cylinder including a lower flanged portion extending transversely of said guide sleeves externally of said housing, means for removably fastening the lower ends of said rods to the lower flanged portion of said cylinder at respective positions below the lower end of the machine housing, said fastening means constituting the sole means for holding said member integrally with said cylinder and rods so that said rods will prevent rotation of the cylinder relative to the housing, a percussion piston slidably mounted internally of said cylinder, springs mounted in said cylinder and acting on opposing faces of said percussion piston for supporting said percussion piston against the two ends of said cylinder, a ramrod carried by said percussion piston and extending axially through an opening in the lower end of said cylinder, and a working tool rigidly connected to the lower end of said ramrod.
Claim 3
Dependent Claim
30 words
A tamping machine as claimed in claim 1 wherein said extension on the underside of said member and said recess at the top of said cylinder are each generally conical.
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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |