US2225852A - Coal mining tool - Google Patents
Coal mining tool Download PDFInfo
- Publication number
- US2225852A US2225852A US304557A US30455739A US2225852A US 2225852 A US2225852 A US 2225852A US 304557 A US304557 A US 304557A US 30455739 A US30455739 A US 30455739A US 2225852 A US2225852 A US 2225852A
- Authority
- US
- United States
- Prior art keywords
- wedge
- coal
- tool
- guides
- coal mining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000003245 coal Substances 0.000 title description 10
- 238000005065 mining Methods 0.000 title description 4
- 210000003462 vein Anatomy 0.000 description 4
- 235000013382 Morus laevigata Nutrition 0.000 description 1
- 244000278455 Morus laevigata Species 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
- E21C37/04—Other methods or devices for dislodging with or without loading by devices with parts pressed mechanically against the wall of a borehole or a slit
Definitions
- the invention relates to improvements in coal mining expanding tool in which a sectional tapered wedge operates in conjunction with a pair of grooved guides; the wedge being driven between the guides by means of a hydraulic jack: and an enlarged opening being provided at one end of the guides to hold the jack in position behind the wedge; and the objects of the improvement are, first, to provide a pressure driven expansion tool to be expanded within a drilled hole in a vein of coal; second, to afford facilities for cleaving masses of coal from a solid Vein without the use of explosives; and third, to reduce the hazard, labor, and cost in the mining of coal.
- Figure l is a side view of the entire tool.
- Figure 2 is a vertical section of the tool after the removal of the jack.
- Figure 3 is a side elevation and an end elevation of the sectional wedge.
- Figure 4 is a perspective view of the wedge I.
- Figure 5 is a vertical section on line l-l, Figure 1.
- the combination guides and yoke 2 consti- 25 tutes the framework of the tool.
- a suitable hydraulic jack Within the yoke 2 is contained a suitable hydraulic jack.
- the wedge l is slidably inserted between the guides 2. Suitable grooves or channels are provided in the inner faces of the guides 2 in which 30 slidably fit the ribs of the wedge I. Members 4-5-6-1-8 are filling blocks for lengthening the wedge.
- Figure 2 The long narrow portion of Figure 2 is inserted in a drilled hole in the vein of coal and then expanded by forcing the wedge I between the guides 2 by means of the hydraulic jack 3.
- the jack 3 is then collapsed and the 'filling 5 blocks 4--5--6l8 inserted between the wedge I and the jack 3, and the thrust of the jack is then repeated until the wedge I has traveled the entire length of the guides 2; thereby causing the tool to expand and break the coal from the 10 vein.
- a yoke having a base member, a pair of resilient arms each having 15 one end connected to the base member and the other end free to move relative to the other arm,
- a power operated jack positioned between the base member and the wedge for operating the wedge to break down the coal or the like.
- guide means positioned between the wedge and the arms for guiding the wedge during its movement relative to the arms.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Description
Dec. 24, 1940.
N. A. ACORDI 7 GOAL MINING TOOL I Filed Nov. 15, 1959 1N VENTON? mm Esus;
J/ MM w 91/ Patented Dec. 24, 1940 UNITED STATES PATENT OFFICE 3 Claims.
The invention relates to improvements in coal mining expanding tool in which a sectional tapered wedge operates in conjunction with a pair of grooved guides; the wedge being driven between the guides by means of a hydraulic jack: and an enlarged opening being provided at one end of the guides to hold the jack in position behind the wedge; and the objects of the improvement are, first, to provide a pressure driven expansion tool to be expanded within a drilled hole in a vein of coal; second, to afford facilities for cleaving masses of coal from a solid Vein without the use of explosives; and third, to reduce the hazard, labor, and cost in the mining of coal.
One form of the invention is illustrated in the accompanying drawing, in which Figure l is a side view of the entire tool. Figure 2 is a vertical section of the tool after the removal of the jack. Figure 3 is a side elevation and an end elevation of the sectional wedge. Figure 4 is a perspective view of the wedge I. Figure 5 is a vertical section on line l-l, Figure 1.
The combination guides and yoke 2 consti- 25 tutes the framework of the tool. Within the yoke 2 is contained a suitable hydraulic jack.
The wedge l is slidably inserted between the guides 2. Suitable grooves or channels are provided in the inner faces of the guides 2 in which 30 slidably fit the ribs of the wedge I. Members 4-5-6-1-8 are filling blocks for lengthening the wedge.
The long narrow portion of Figure 2 is inserted in a drilled hole in the vein of coal and then expanded by forcing the wedge I between the guides 2 by means of the hydraulic jack 3. The jack 3 is then collapsed and the 'filling 5 blocks 4--5--6l8 inserted between the wedge I and the jack 3, and the thrust of the jack is then repeated until the wedge I has traveled the entire length of the guides 2; thereby causing the tool to expand and break the coal from the 10 vein.
I claim:
1. In a device for breaking down coal and the like, the combination of a yoke having a base member, a pair of resilient arms each having 15 one end connected to the base member and the other end free to move relative to the other arm,
a wedge positioned between the arms, and means for forcing the wedge toward the free ends of the arms to expand the arms to effect a breaking pressure on the coal or the like.
2. In the device of claim 1, a power operated jack positioned between the base member and the wedge for operating the wedge to break down the coal or the like.
3. In the device of claim 1, guide means positioned between the wedge and the arms for guiding the wedge during its movement relative to the arms.
NICHOLAS A. ACORDI.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US304557A US2225852A (en) | 1939-11-15 | 1939-11-15 | Coal mining tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US304557A US2225852A (en) | 1939-11-15 | 1939-11-15 | Coal mining tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2225852A true US2225852A (en) | 1940-12-24 |
Family
ID=23177020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US304557A Expired - Lifetime US2225852A (en) | 1939-11-15 | 1939-11-15 | Coal mining tool |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2225852A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2814475A (en) * | 1956-04-04 | 1957-11-26 | James E Jay | Plug and feather rock breaking device having spring return means |
| US2837079A (en) * | 1956-01-30 | 1958-06-03 | Fletcher Co H E | Plug and feather construction |
| US3791698A (en) * | 1971-01-13 | 1974-02-12 | H Darda | Hydraulically operated apparatus for mechanical splitting of rock and the like |
| US4299347A (en) * | 1979-04-04 | 1981-11-10 | Societe Bretonne De Fonderie Et De Mecanique (S.B.F.M.) | Device for removal of casting deadhead by hydraulic wedge |
-
1939
- 1939-11-15 US US304557A patent/US2225852A/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2837079A (en) * | 1956-01-30 | 1958-06-03 | Fletcher Co H E | Plug and feather construction |
| US2814475A (en) * | 1956-04-04 | 1957-11-26 | James E Jay | Plug and feather rock breaking device having spring return means |
| US3791698A (en) * | 1971-01-13 | 1974-02-12 | H Darda | Hydraulically operated apparatus for mechanical splitting of rock and the like |
| US4299347A (en) * | 1979-04-04 | 1981-11-10 | Societe Bretonne De Fonderie Et De Mecanique (S.B.F.M.) | Device for removal of casting deadhead by hydraulic wedge |
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