Patent US3828862A successfully refreshed from Google Patents.
US3828862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Travelling overhead carriage mining machine with articulated,tool carrying boom
Assignee: LEMAND ENG Ltd
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Filing: 1972-09-21
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Granted: 1974-08-13
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Expires: 1992-09-21
Abstract
Abstract A handling device such as a coal cutting tool in which a carriage is mounted on overhead rails for movement therealong and supports a depending articulated arm arrangement to which can be secured a tool such as an impact hammer. Means is provided for moving the articulated arm and hammer transversely, forwardly, upwardly and downwardly.
Inventors
- 👤 K Dabell
- 👤 R Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:34
CPC Classifications
E; E21; E21C; E21C33/00; B; B61; B61C; B61C11/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
133 words
A mining machine, comprising: a. a carriage assembly constituted by a front carriage part and a rear carriage part, b. means on each carriage part for movably engaging overhead rails, c. hydraulic ram means interconnecting the carriage parts for effecting relative rectilinear movement therebetween, d. releasable hydraulically-operated clamping means adjacent the trailing end of the rear carriage part for locking the latter to the rails, means for selectively operating the hydraulic ram means and the releasable hydraulically-operated clamping means to effect movement of the carriage along the rails, e. depending bracket means mounted on the front carriage part, f. an oscillatable shaft supported on the bracket means parallel with the rails, and g. adjustable articulated arm means suspended from the shaft for carrying and presenting a tool to earth strata to be mined.
Claim 2
Dependent Claim
133 words
A mining machine, comprising: a. a carriage assembly constituted by a front carriage part and a rear carriage part, b. means on each carriage part for movably engaging overhead rails, c. hydraulic ram means interconnecting the carriage parts for effecting relative rectilinear movement therebetween, d. releasable hydraulically-operated clamping means adjacent the trailing end of the rear carriage part for locking the latter to the rails, means for selectively operating the hydraulic ram means and the releasable hydraulically-operated clamping means to effect movement of the carriage along the rails, e. depending bracket means mounted on the front carriage part, f. an oscillatable shaft supported on the bracket means parallel with the rails, and g. adjustable articulated arm means suspended from the shaft for carrying and presenting a tool to earth strata to be mined.
Claim 3
Dependent Claim
29 words
A mining machine as claimed in claim 1 in which each carriage part is a box section with the hydraulic ram means protectively housed in the front carriage part.
Claim 4
Dependent Claim
34 words
A mining machine as claimed in claim 1 in which the oscillatable shaft mounts a pinion in mesh with a rack reciprocable by two hydraulic rams, one at each side, to oscillate the shaft.
Claim 5
Dependent Claim
65 words
A mining machine as claimed in claim 1 in which the articulated arm means comprises a first arm pivotally connEcted to a bracket on the oscillatable shaft and pivotally connected to a second arm intermediate the ends thereof, a first hydraulic ram interconnecting the braket and first arm, and a second hydraulic ram interconnecting the first arm and the adjacent end of the second arm.
Claim 6
Dependent Claim
38 words
A mining machine as claimed in claim 4 in which the second arm pivotally mounts a cradle and a third hydraulic ram interconnects the cradle and the second arm at a location remote from the pivotal connection therebetween.
Claim 7
Dependent Claim
37 words
A mining machine as claimed in claim 5 in which the cradle slidably mounts an impact hammer movable relative to the cradle under the action of a fourth hydraulic ram connected between the cradle and the hammer.
Claim 8
Dependent Claim
37 words
A mining machine as claimed in claim 6 further comprising an arm depending from and movable with the carriage assembly, and a control unit mounted on the arm for operating the hydraulic rams and hydraulically-operated clamping means.
Claim 9
Dependent Claim
28 words
A mining machine as claimed in claim 7 in which the depending arm is rearwardly inclined relative to the carriage assembly and is pivotable about a vertical axis.
Claim 10
Dependent Claim
67 words
A mining machine as claimed in claim 1 in which the rails comprise a pair of parallel rails secured to a plurality of colliery arches, each rail being constituted by a number of sections each bridging adjacent arches with each rail secured to each arch by a support breacket assembly of pivotal construction such that each rail can pivot transversely of the arch and oscillate relative thereto.
Claim 11
Dependent Claim
22 words
A mining machine as claimed in claim 9 in which each pair of parallel rail sections are interconnected by a transverse spacer.
Claim 12
Dependent Claim
33 words
A mining machine as claimed in claim 9 in which longitudinally aligned rails are slightly spaced apart at their adjacent ends and are connected to the support bracket assembly by a flat plate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |