Patent US3841706A successfully refreshed from Google Patents.
US3841706A
Expired / Lapsed
US
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Control rod for longwall mining installation
Assignee: Gewerkschaft Eisenhutte Westfalia GmbH
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Filing: 1973-05-02
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Granted: 1974-10-15
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Expires: 1993-05-02
Abstract
Abstract A mineral mining installation with a plough guided on a guide member at the mineral face side of a longwall conveyor. The guide member is part of a trough-like frame which receives the conveyor therein. A plurality of rods extend beneath the frame and conveyor. Each rod has a head slidably received between the floor of the working and a part of the guide member; the rods being used to vary the position of the guide member to control the cutting position of the plough. Each rod is pivotably connected to a lever which is in turn pivotably connected to a bracket at a goaf side wall of the frame. Each lever is connected to a shifting ram and the levers and brackets have bores for receiving locking pins. These pins can selectively clamp the levers whereby the rams can be used to shift the installation or displace the rods via the levers to effect the control of the plough.
Inventors
- 👤 H Huttenbrauck
- 👤 B Ostrop
- 👤 H Poklekowski
- 👤 M Soliman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:09
CPC Classifications
E; E21; E21C; E21C35/00; E21C35/08; E21C35/12; E21C35/125; E21C27/00; E21C27/20; E21C27/32
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
85 words
In a mineral mining installation composed of a conveyor and guide means for guiding a mineral winning machine for movement along the conveyor; the improvement comprising at least one control device for controlling the position of the guide means, said control device having an elongate rod extending beneath the conveyor with a head for slidably engaging and moving between the floor of a working and the guide means, and means for moving said rod axially to thereby effect raising or lowering of the guide means.
Claim 2
Dependent Claim
85 words
In a mineral mining installation composed of a conveyor and guide means for guiding a mineral winning machine for movement along the conveyor; the improvement comprising at least one control device for controlling the position of the guide means, said control device having an elongate rod extending beneath the conveyor with a head for slidably engaging and moving between the floor of a working and the guide means, and means for moving said rod axially to thereby effect raising or lowering of the guide means.
Claim 3
Dependent Claim
47 words
An installation according to claim 1, wherein the conveyor is supported in a frame which has a floor for receiving the conveyor, a guide member at one side constituting said guide means and a side wall at the side of the frame remote from said guide member.
Claim 4
Dependent Claim
33 words
An installation according to claim 2, wherein the guide member has an inclined ramp portion extending towards the floor of the working and the head of said rod engages on said ramp portion.
Claim 5
Dependent Claim
33 words
An installation according to claim 3, wherein the head of the rod is of wedge-shaped construction with faces slidably engageable with the floor of the working and the underside of said ramp portion.
Claim 6
Dependent Claim
40 words
An installation according to claim 2, wherein a plate is pivotably connected to said guide member to pivot about an axis extending parallel to the longitudinal centre of the conveyor, the head of said rod engaging on said pivotable plate.
Claim 7
Dependent Claim
43 words
An installation according to claim 5, wherein the head of the rod has faces slidably engageable with the floor of the working and the underside of a portion of said plate disposed inwardly towards the conveyor from the pivotal axis of the plate.
Claim 8
Dependent Claim
27 words
An installation according to claim 5, wherein the underside of the floor of the support frame has a guide piece for slidably guiding and supporting the rod.
Claim 9
Dependent Claim
42 words
An installation according to claim 2, wherein there is provided a lever which is pivoted at one end to the rod and at the other end to the frame, the moving means acting upon said lever to effect movement of the rod.
Claim 10
Dependent Claim
38 words
An installation according to claim 8, wherein said other end of the lever is pivoted to a bracket on the side wall of the frame, said bracket having stop members for limiting the pivotal movement of the lever.
Claim 11
Dependent Claim
14 words
An installation according to claim 1, wherein the moving means is a shifting ram.
Claim 12
Dependent Claim
27 words
An installation according to claim 9, wherein the moving means is in the form of a shifting ram having its piston rod pivotably connected to the lever.
Claim 13
Dependent Claim
30 words
An installation according to claim 11, wherein there is provided means for selectively locking the lever whereby the ram can be used to shift the installation towards a mineral face.
Claim 14
Dependent Claim
42 words
An installation according to claim 12, wherein the locking means is in the form of a pin insertable into a bore in the bracket whereby the lever can be disposed between the pin and one of the stop members of the bracket.
Claim 15
Dependent Claim
19 words
An installation according to claim 13, wherein the lever has a bore aligNable with the bore in the bracket.
Claim 16
Dependent Claim
27 words
An installation according to claim 2, wherein a series of beams spaced-apart longitudinally of the conveyor serve to brace the frame on the floor of the working.
Claim 17
Dependent Claim
21 words
An installation according to claim 1, wherein a plurality of control devices are provided which are spaced-apart longitudinally of the conveyor.
References Cited (Backward Citations)
US3765723A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |