US3773384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mining machine
Assignee: Joy Manufacturing Co
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Filing: 1971-04-16
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Granted: 1973-11-20
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Expires: 1991-04-16
Abstract
Abstract A mining machine and more particularly a mining machine having a rotary drum type cutting head which cuts clearance for the supporting structure thereof.
Inventors
- 👤 R Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:18
CPC Classifications
E; E21; E21C; E21C27/00; E21C27/20; E21C27/24
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
186 words
A mining machine cutting structure adapted to be supported solely for vertical movement relative to a supporting mining machine chassis, comprising: a rigid member having a forward portion and laterally spaced support portions extending rearwardly of said forward portion for powered rotation about a longitudinal axis of said head member; said head member having sections thereof extending along said axis outwardly from and intermediate said spaced support portions; said sections having cutter supporting portions adapted to carry cutters, respectively, to mine a path in a bedded deposit of mineral the width of which path exceeds the transverse profile of the mining machine chassis; said cutter supporting portions being located with respect to each other to provide, when carrying cutters, clearance for said head member and said spaced support portions; and certain ones of said cutter supporting portions being movable in orbits located closely adjacent the sides of said support portions, respectively, to cut clearance for said spaced support portions by cutters supported by said cerTain ones of said cutter supporting portions solely upon movement of said certain ones of said cutter supporting portions through said orbits.
Claim 2
Dependent Claim
186 words
A mining machine cutting structure adapted to be supported solely for vertical movement relative to a supporting mining machine chassis, comprising: a rigid member having a forward portion and laterally spaced support portions extending rearwardly of said forward portion for powered rotation about a longitudinal axis of said head member; said head member having sections thereof extending along said axis outwardly from and intermediate said spaced support portions; said sections having cutter supporting portions adapted to carry cutters, respectively, to mine a path in a bedded deposit of mineral the width of which path exceeds the transverse profile of the mining machine chassis; said cutter supporting portions being located with respect to each other to provide, when carrying cutters, clearance for said head member and said spaced support portions; and certain ones of said cutter supporting portions being movable in orbits located closely adjacent the sides of said support portions, respectively, to cut clearance for said spaced support portions by cutters supported by said cerTain ones of said cutter supporting portions solely upon movement of said certain ones of said cutter supporting portions through said orbits.
Claim 3
Dependent Claim
32 words
A mining machine cutting structure as specified in claim 1 wherein the forward portion of said rigid member has at least a rigid continuous section thereof extending intermediate said spaced support portions.
Claim 4
Dependent Claim
34 words
A mining machine cutting structure as specified in claim 1 additionally including cutters supported by said cutter supporting portions to move in parallel orbits spaced axially along the longitudinal axis of said head member.
Claim 5
Dependent Claim
51 words
A mining machine cutting structure as specified in claim 1 including two spaced support portions only and said sections comprise a single cutter drum extending intermediate said spaced support portions and a pair of outer cutter drums each of which extend outwardly from a respective spaced support portion along said axis.
Claim 6
Dependent Claim
55 words
A mining machine cutting structure as specified in claim 1 including three spaced support portions only and said sections comprise a pair of cutter drums each of which extend intermediate adjacent spaced support portions and a pair of outer cutter drums each of which extend outward from a respective spaced support portion along said axis.
Claim 7
Dependent Claim
28 words
A mining machine cutting structure as specified in claim 1 additionally including driven gear means supported by said rigid member to drive said head member about said axis.
Claim 8
Dependent Claim
34 words
A mining machine cutting structure as specified in claim 6 wherein said drive gear means includes a plurality of speed reduction gear means carried within the interior of at least some of said sections.
Claim 9
Dependent Claim
43 words
A mining machine cutting structure as specified in claim 6 wherein said head member additionally includes head shaft means extending along said axis for transmitting the drive from at least some of said driven gear means to at least some of said sections.
Claim 10
Dependent Claim
51 words
A mining machine cutting structure as specified in claim 8 including two spaced support portions only and said sections comprise a single cutter drum extending intermediate said spaced support portions and a pair of outer cutter drums each of which extend outwardly from a respective spaced support portion along said axis.
Claim 11
Dependent Claim
49 words
A mining machine cutting structure as specified in claim 9 wherein; said driven gear means comprise two independently driven gear trains; each of said gear trains being driven adjacent the forward end of a respective input shaft; and said input shafts extending forwardly through a respective spaced support portion.
Claim 12
Dependent Claim
37 words
A mining machine cutting structure as specified in claim 9 wherein said outer cutter drums are rotatably driven by said head shaft means and said single cutter drum is rotatably driven directly by said driven gear means.
Claim 13
Dependent Claim
21 words
A mining machine cutting structure as specified in claim 11 wherein said driven gear means comprise two independently driven gear trains.
Claim 14
Dependent Claim
33 words
A mining machine cutting structure as specified in claim 12 wherein one of said gear trains drives said head shaft means and the other of said gear trains drives said single cutter drum.
Claim 15
Dependent Claim
35 words
A mining machine cutting structure as specified in claim 9 wherein said head shaft means comprises two separate head shafts each of which extend along said axis on a respective side of said head member.
Claim 16
Dependent Claim
45 words
A mining machine cutting structure as specified in claim 14 wherein said driven gear means and at least one of said head shafts have cooperable means thereon to provide for limited axial movement of said at least one of said head shafts along said axis.
Claim 17
Dependent Claim
24 words
A mining machine cutting structure as specified in claim 14 wherein said head shafts and said sections are coaxial with respect to said axis.
Claim 18
Dependent Claim
45 words
A mining machine cutting structure as specified in claim 14 wherein said driven gear means comprise two independently driven gear trains and each of said gear trains drives a respective head shaft and said single cutter drum is driven by both of said head shafts.
Claim 19
Dependent Claim
56 words
A minIng machine cutting structure as specified in claim 8 including three spaced support portions only and said sections comprise a pair of intermediate cutter drums each of which extend intermediate adjacent spaced support portions and a pair of outer cutter drums each of which extend outward from a respective spaced support portion along said axis.
Claim 20
Dependent Claim
37 words
A mining machine cutting structure as specified in claim 18 wherein said outer cutter drums are rotatably driven by said head shaft means and said intermediate cutter drums are rotatably driven directly by said driven gear means.
Claim 21
Dependent Claim
35 words
A mining machine cutting structure as specified in claim 18 wherein said head shaft means comprises two separate head shafts each of which extend along said axis on a respective side of said head member.
Claim 22
Dependent Claim
44 words
A mining machine cutting structure as specified in claim 20 wherein said driven gear means and at least one of said head shafts have cooperable means thereon to provide for limited axial movement of at least one of said head shafts along said axis.
Claim 23
Dependent Claim
24 words
A mining machine cutting structure as specified in claim 22 wherein said head shafts and said sections are coaxial with respect to said axis.
Claim 24
Dependent Claim
21 words
A mining machine cutting structure as specified in claim 19 wherein said driven gear means comprise two independently driven gear trains.
Claim 25
Dependent Claim
51 words
A mining machine cutting structure as specified in claim 23 wherein one of said gear trains drives one of said head shafts and one of said intermediate cutter drums and the other of said gear trains drives the other of said head shafts at the other of said intermediate cutter drums.
Claim 26
Dependent Claim
49 words
A mining machine cutting structure as specified in claim 18 wherein; said driven gear means comprise two independently driven gear trains; each of said gear trains being driven adjacent the forward end of a respective input shaft; and said input shafts extending forwardly through a respective spaced support portion.
Claim 27
Dependent Claim
27 words
A mining machine cutting structure as specified in claim 25 wherein the spaced support portions through which said input shafts extend are the outermost spaced support portions.
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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |