Patent US3596997A successfully refreshed from Google Patents.
US3596997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for excavating galleries
Assignee: Charbonnages de France CDF
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Filing: 1969-05-13
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Granted: 1971-08-03
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Expires: 1989-05-13
Abstract
Abstract A machine for excavating galleries or levels in mines by means of a cutting head which is arranged in such manner that it cuts out, in the wall to be mined, grooves in which the outlines on a vertical plane are parallel in pairs but always perpendicular to the flat wall and cut this latter along successive flat vertical surfaces. The cutting head is consequently formed by two parallel discs provided with picks driven in rotation by a shaft at right angles to the axis of the gallery and carried by a disc-carrier head which is orientable with respect to a longitudinal axis parallel to the axis of the gallery.
Inventors
- 👤 Alfred Valantin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:05
CPC Classifications
E; E21; E21D; E21D9/00; E21D9/10; E21D9/1006; E21D9/1013; E21D9/1033
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
228 words
A machine for excavating galleries in mines of all kinds by means of a rotating tool cutting frontally into the wall of the end of the gallery to be excavated, comprising: a cutting head constituted by two parallel discs, each provided with picks and driven by a shaft with a transverse axis at right angles to the axis of the gallery to be excavated; the said driving shaft for the discs being carried by a disccarrier head which is orientatable with respect to a longitudinal axis parallel to the said axis of the gallery to be excavated; the distance comprised between said discs being at most equal to the radial distance between the points of said picks and the free extremity of said disc-carrier head; means coupled to said disc-carrier head adapted to orientate said disc-carrier head and to bring said driving shaft with transverse axis into a predetermined direction; means supporting said orientating means adapted to maintain said predetermined direction of the driving shaft with transverse axis parallel to itself; means supporting said cutting head in a longitudinally sliding manner with respect to the remainder of said machine; and means pivotally supported on said last mentioned supporting means adapted to cause longitudinal axis to describe planes parallel to said axis of the gallery to be excavated, and at right angles to said direction of said transverse axis.
Claim 2
Dependent Claim
228 words
A machine for excavating galleries in mines of all kinds by means of a rotating tool cutting frontally into the wall of the end of the gallery to be excavated, comprising: a cutting head constituted by two parallel discs, each provided with picks and driven by a shaft with a transverse axis at right angles to the axis of the gallery to be excavated; the said driving shaft for the discs being carried by a disccarrier head which is orientatable with respect to a longitudinal axis parallel to the said axis of the gallery to be excavated; the distance comprised between said discs being at most equal to the radial distance between the points of said picks and the free extremity of said disc-carrier head; means coupled to said disc-carrier head adapted to orientate said disc-carrier head and to bring said driving shaft with transverse axis into a predetermined direction; means supporting said orientating means adapted to maintain said predetermined direction of the driving shaft with transverse axis parallel to itself; means supporting said cutting head in a longitudinally sliding manner with respect to the remainder of said machine; and means pivotally supported on said last mentioned supporting means adapted to cause longitudinal axis to describe planes parallel to said axis of the gallery to be excavated, and at right angles to said direction of said transverse axis.
Claim 3
Dependent Claim
60 words
A machine for excavating galleries as claimed in claim 1, and further comprising means for immobilizing said machine momentarily, said means being constituted, on the one hand by a series of extensible jacks disposed between the machine and the ground, and on the other hand by a series of retractable jacks coupling the machine to anchorage bolts in the ground.
Claim 4
Dependent Claim
146 words
A machine for excavating galleries as claimed in claim 1, in which said sliding means carrying the cutting head comprise: a trunnion having its axis parallel to said axis of the gallery to be excavated and on which is pivotally mounted a first transverse coupling arm perpendicular to the axis of said trunnion; a second transverse supporting arm mounted on an articulation axis at the free extremity of said first coupling arm, the cutting head being in turn carried by a shaft with its longitudinal axis parallel to said trunnion axis and located at the free extremity of said second supporting arm, the distance separating the longitudinal axis of said cutting arm from said articulation axis of the two transverse arms being at least equal to the distance separating said articulation axis from the axis of said trunnion, reduced by the distance between said two discs.
Claim 5
Dependent Claim
145 words
A machine for excavating galleries as claimed in claim 3, in which the means for orientating the transverse axis of the cutting head and for maintaining it parallel to itself are constituted by: a driving pulley pivoting on said trunnion and adapted to be locked with respect to said trunnion and free for rotation with respect to said first transverse coupling arm; two intermediate pulleys having an axis coincident with the articulation axis of the two transverse arms, coupled for rotation to each other and free for rotation with respect to said transverse arms; a driven pulley coupled for rotation with said cutting head and free for rotation with respect to said second transverse supporting arm; and two synchronizing chains, one winding on said driving pulley and on one of said intermediate pulleys, the other on said driven pulley and on the other intermediate pulley.
Claim 6
Dependent Claim
123 words
A machine for excavating galleries as claimed in claim 3, in which the means for causing said longitudinal axis to describe planes parallel to each other and perpendicular to the direction of the transverse axis are constituted by: two jacks, the bodies of which are each articulated on a fixed point of the first transverse coupling arm, and the pistons of which are articulated on a crankpin carried by a plate having its axis coincident with the articulation axis of the two transverse arms and fast for rotation with the second transverse supporting arm; and means for applying to said first transverse coupling arm a rotation with respect to the trunnion supporting said arm, said rotation being conjoint with that of said plate.
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |