US3913338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for positioning cable-type roof supports in a mine roof
Assignee: Individual
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Filing: 1974-11-22
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Granted: 1975-10-21
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Expires: 1994-11-22
Abstract
Abstract A pair of cable spools for storing flexible cable are rotatably mounted in spaced relationship at one end portion of a mobile frame that is propelled through an underground mine by power driven endless tracks. The flexible cable is fed from the spools to the forward end portion of the mobile frame and onto a pair of cable drums that are rotatably supported in spaced relationship on a support frame that is vertically raised to abut the mine roof. A prime mover rotates the drums to transfer preselected lengths of cable from each of the spools to the respective drums and to feed the cables from the drums through a cable shearing mechanism and into a cable splicing mechanism provided on the support frame. The cables pass in overlapping relation through a compressible sleeve that is retained in the cable splicing mechanism. Expansion shells are attached to the end portions of the cables and are securely inserted in roof support holes drilled in the mine roof by a pair of rotary percussion drills that are mounted on the forward end portion of the mobile frame. Tensioning devices provided on each of the cable drums exert a preselected tension on the cables secured in the support holes. The cable sleeve is compressed by the cable splicing mechanism to join the overlapping portions of the cables. The cable shearing mechanism is then actuated to sever the spliced cables from the portion of each of the cables remaining on the drums to complete the installation of the cable-type roof support.
Inventors
- 👤 Alex J Galis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:25
CPC Classifications
E; E21; E21D; E21D11/00; E21D11/006; E21D20/00; E21D20/003
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
258 words
Apparatus for positioning cable-type roof supports in a mine roof comprising, a mobile frame, a pair of cable spools rotatably mounted in spaced relationship at one end portion of said mobile frame for storing flexible cable, a vertically movable support frame positioned at the other end portion of said mobile frame, a pair of shafts rotatably secured to said support frame and arranged in spaced parallel relationship, a pair of cable drums nonrotatably supported on said pair of shafts respectively and positioned on said support frame to receive a portion of the cable stored on each of said cable spools respectively, drive means for rotating each of said cable drums to transfer preselected lengths of cable from said cable spools to said cable drums, said drive means operable to rotate said cable drums and feed therefrom in a direction transverse to the longitudinal axis of said mobile frame preselected lengths of cable for inserting in a pair of spaced support holes drilled in the mine roof, said cable drums each having means for tensioning the cable having one end portion securely positioned in the support holes and the remaining portion of each of the cables reeved around said cable drums, a cable splicing means secured to said support frame and positioned transversely between said cable drums for joining overlaping parallel positioned portions of the cables, and a shear means positioned on said support frame adjacent to said cable splicing means for severing the spliced cables from the portion of each of the cables remaining on said cable drums.
Claim 2
Dependent Claim
258 words
Apparatus for positioning cable-type roof supports in a mine roof comprising, a mobile frame, a pair of cable spools rotatably mounted in spaced relationship at one end portion of said mobile frame for storing flexible cable, a vertically movable support frame positioned at the other end portion of said mobile frame, a pair of shafts rotatably secured to said support frame and arranged in spaced parallel relationship, a pair of cable drums nonrotatably supported on said pair of shafts respectively and positioned on said support frame to receive a portion of the cable stored on each of said cable spools respectively, drive means for rotating each of said cable drums to transfer preselected lengths of cable from said cable spools to said cable drums, said drive means operable to rotate said cable drums and feed therefrom in a direction transverse to the longitudinal axis of said mobile frame preselected lengths of cable for inserting in a pair of spaced support holes drilled in the mine roof, said cable drums each having means for tensioning the cable having one end portion securely positioned in the support holes and the remaining portion of each of the cables reeved around said cable drums, a cable splicing means secured to said support frame and positioned transversely between said cable drums for joining overlaping parallel positioned portions of the cables, and a shear means positioned on said support frame adjacent to said cable splicing means for severing the spliced cables from the portion of each of the cables remaining on said cable drums.
Claim 3
Dependent Claim
57 words
Apparatus for positioning cable-type roof supports in a mine roof as set forth in claim 1 which includes, a pair of upwardly extending drill racks mounted to opposed sides of the forward end portion of said mobile frame, said drill racks arranged to support means for drilling support holes at a preselected angle in the mine roof.
Claim 4
Dependent Claim
42 words
Apparatus for positioning cable-type roof supports in a mine roof as set forth in claim 1 which includes, vertically adjustable means for engaging the mine roof in abutting relationship to thereby support the mine roof during installation of the cable-type roof support.
Claim 5
Dependent Claim
48 words
Apparatus for positioning cable-type roof supports in a mine roof as set forth in claim 1 which includes, said movable support frame having an upper surface arranged to abut the surface of the mine roof and to support the mine roof during the installation of cable-type roof support.
Claim 6
Dependent Claim
40 words
Apparatus for positioning cable-type roof supports in a mine roof as set forth in claim 4 which includes, a fluid actuated telescoping mechanism for raising and lowering said support frame into and out of abutting relationship with the mine roof.
Claim 7
Dependent Claim
55 words
Apparatus for positioning cable-type roof supports in a mine roof as set forth in claim 1 which includes, a cable retaining means provided on each of said cable drums for preventing relative movement between said cable drums and the cables reeved about said cable drums as the cables are being tensioned by said tensioning means.
Claim 8
Dependent Claim
114 words
Apparatus for positioning cable-type roof supports in a mine roof as set forth in claim 6 in which said cable retaining means includes, a linkage connection pivotally secured at one end portion to said support frame and having the other end portion positioned adjacent to said respective cable drums, a plurality of friction rollers rotatably supported by said linkage connection and positioned parallel and adjacent to said respective cable drums, and lever means connected to the other end portion of said linkage connection for pivoting said linkage connection relative to said support frame to move said friction rollers into and out of frictional engagement with the cable reeved around each of said cable drums.
Claim 9
Dependent Claim
124 words
Apparatus for positioning cable-type roof supports in a mine roof as set forth in claim 1 in which said cable splicing means includes, a pair of opposed die housings arranged to move into and out of abutting relationship, said die housings each having a semicircular die arranged to form a channel shaped crimping die for receiving a compressible sleeve to be compressed when said die housings are positioned in abutting relationship, a power actuated device for moving said die housings into and out of abutting relationship, and a linkage means for connecting said power actuated device to said die housings so that upon actuation of said power actuated device said die housings are urged into abutting relationship to form said channel shaped crimping die.
Claim 10
Dependent Claim
150 words
Apparatus for positioning cable-type roof supports in a mine roof as set forth in claim 1 in which said tensioning means includes, a ratchet nonrotatably secured to each of said shafts and coaxially mounted thereon relative to each of said cable drums, said ratchet having a plurality of radially projecting teeth located at the periphery thereof, a pawl arranged to engage said ratchet teeth and permit rotation of said shaft in only one direction, and a power actuated device having an extensible rod member, said pawl secured to the end portion of said rod member and movable therewith upon actuation of said power actuated device, said rod member arranged to extend outwardly from said power actuated device and transfer said pawl between successive teeth of said ratchet to thereby rotate said ratchet and said shaft and exert a preselected tension on said cable reeved around each of said cable drums.
Claim 11
Dependent Claim
178 words
Apparatus for positioning cable-type roof supports in a mine roof as set forth in claim 1 in which said shear means includes, a pair of arm members pivotally connected at one end portion to opposed sides of said support frame, power means connected to the other end portion of said arm members for pivoting said arm members toward and away from said support frame, a first cutting element secured to each of said arm members and having a transverse cutting edge portion, said first cutting element having a bore extending therethrough for receiving the portion of the cable being fed from each of said cable drums to said cable splicing means, and a second cutting element immovably secured to opposed sides of said support frame adjacent to said cable splicing means, said second cutting element having a transverse cutting edge portion arranged to engage the cutting edge portion of said first cutting element so that the cable is severed when said first cutting element is urged into cutting relation with said second cutting element by said power means.
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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |