US1642603A - Reenforced mine prop - Google Patents
Reenforced mine prop Download PDFInfo
- Publication number
- US1642603A US1642603A US113540A US11354026A US1642603A US 1642603 A US1642603 A US 1642603A US 113540 A US113540 A US 113540A US 11354026 A US11354026 A US 11354026A US 1642603 A US1642603 A US 1642603A
- Authority
- US
- United States
- Prior art keywords
- prop
- reenforced
- mine prop
- mine
- pipe
- 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
- 239000011121 hardwood Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/02—Non-telescopic props
Definitions
- My invention relates to a mine prop, particularly to a metal mine prop having a reenforcingA core or interior of Wood.
- the general object of my invention is to provide a mine prop possessing increased strength over a Wooden prop of equal cross sectional area.
- FIG. 1 is a longitudinal sectional view of a mine prop embodying my invention
- FIG. 2 is a cross section on the line 2-2, Figure 1.
- a length of pipe 10 is provided of the desired diameter according to the final dimensions required in the particular prop.
- the prop is completed by means of two turned hard-Wood end plugs 12 having tenons 13 or inner ends of reduced ⁇ 30 diameter having a driving lit in the ends of the pipe 10.
- a shoulder 14 on each plug is poduced at the base of thereduced inner end 192e. .serial No. 113,540.
- the length of the tenonsor reduced inner ends 13 is such that the plugs complete with the central core 11 a solid reenforcement for the complete length of the pipe 10.
- the pipe 10 is inpractice made of steel 4o and constitutes a casing for the major portion of the length of the prop and with the reenforcement provided by the core 11 and end plugs as described, strength is obtained materially beyond a prop made of Wood as i demonstrated by actual trial. Y
- a mine prop having a metal casing, a central hard-Wood core in said casing and terminating short of the ends thereof, and plugs having tenons, said tenons having a driving fit in the ends' lof said casing and extending inward to the ends of said core.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Golf Clubs (AREA)
Description
M. J. CONWAY y RBENFORCEDMINE PROP` Filed June s.'V 1926 WITNESSES TN n EWG, MJU
ATTORNEYS Patented` Sept. 13, 1927.
uNrrlezDv STATES MARTIN J. CONWAY, OF STUBENVILLE, OHIO.
REENFORCED .MINE PROP.
Application led June 3,
My invention relates to a mine prop, particularly to a metal mine prop having a reenforcingA core or interior of Wood.
The general object of my invention is to provide a mine prop possessing increased strength over a Wooden prop of equal cross sectional area.
The distinguishing features and advantages of my improved mine prop Will clearly appear as the description proceeds.
y Reference is to be had to the accompanying drawingsforming a part of this specification, it being understood that the ydrawings are merely illustrative of one example ofthe invention.
Figure 1 is a longitudinal sectional view of a mine prop embodying my invention Y Figure 2 is a cross section on the line 2-2, Figure 1. Y In carrying out my invention in accordance With the illustrated example, a length of pipe 10 is provided of the desired diameter according to the final dimensions required in the particular prop. Within the pipe 10 is a central turned hard-Wood core 11 terminating at its ends short of the ends of the pipe 10. The prop is completed by means of two turned hard-Wood end plugs 12 having tenons 13 or inner ends of reduced `30 diameter having a driving lit in the ends of the pipe 10. A shoulder 14 on each plug is poduced at the base of thereduced inner end 192e. .serial No. 113,540.
or tenon 13 sovthat the outer portion of larger diameter abuts at said shoulders against the ends of the pipe 10. The length of the tenonsor reduced inner ends 13 is such that the plugs complete with the central core 11 a solid reenforcement for the complete length of the pipe 10.
The pipe 10 is inpractice made of steel 4o and constitutes a casing for the major portion of the length of the prop and with the reenforcement provided by the core 11 and end plugs as described, strength is obtained materially beyond a prop made of Wood as i demonstrated by actual trial. Y
I Would state furthermore that While the illustrated example constitutes a practical embodiment of my invention,` I do not limit myself strictly to the exact details herein illustrated, since, manifestly, the same can loe considerably varied Without departure from the spirit of the invention as defined in the appended claim.
Having thus described my invention, I claim:
As an article of manufacture, a mine prop having a metal casing, a central hard-Wood core in said casing and terminating short of the ends thereof, and plugs having tenons, said tenons having a driving fit in the ends' lof said casing and extending inward to the ends of said core.
MARTIN J. CONWAY.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US113540A US1642603A (en) | 1926-06-03 | 1926-06-03 | Reenforced mine prop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US113540A US1642603A (en) | 1926-06-03 | 1926-06-03 | Reenforced mine prop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1642603A true US1642603A (en) | 1927-09-13 |
Family
ID=22350024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US113540A Expired - Lifetime US1642603A (en) | 1926-06-03 | 1926-06-03 | Reenforced mine prop |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1642603A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0130770A2 (en) * | 1983-06-24 | 1985-01-09 | Bestobell South Africa Limited | Collapsible elongate mine support |
| EP0142280A2 (en) * | 1983-10-14 | 1985-05-22 | Bestobell South Africa Limited | Elongate mine support |
| US4520980A (en) * | 1979-11-02 | 1985-06-04 | Mine Support Systems (Proprietary) Ltd. | Elongate compression bearing member |
| US4534531A (en) * | 1980-07-22 | 1985-08-13 | Brown Allan H G | Elongated prop for supporting a load |
| US4535496A (en) * | 1983-11-08 | 1985-08-20 | Parker Dennis D | Water bed bar |
-
1926
- 1926-06-03 US US113540A patent/US1642603A/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4520980A (en) * | 1979-11-02 | 1985-06-04 | Mine Support Systems (Proprietary) Ltd. | Elongate compression bearing member |
| US4534531A (en) * | 1980-07-22 | 1985-08-13 | Brown Allan H G | Elongated prop for supporting a load |
| EP0130770A2 (en) * | 1983-06-24 | 1985-01-09 | Bestobell South Africa Limited | Collapsible elongate mine support |
| EP0130770A3 (en) * | 1983-06-24 | 1986-05-14 | Bestobell South Africa Limited | Collapsible elongate mine support |
| EP0142280A2 (en) * | 1983-10-14 | 1985-05-22 | Bestobell South Africa Limited | Elongate mine support |
| EP0142280A3 (en) * | 1983-10-14 | 1986-05-21 | Bestobell South Africa Limited | Elongate mine support |
| US4535496A (en) * | 1983-11-08 | 1985-08-20 | Parker Dennis D | Water bed bar |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US1783605A (en) | Pipe | |
| US1642603A (en) | Reenforced mine prop | |
| GB252975A (en) | Improvements relating to reinforced concrete | |
| US1755236A (en) | Shovel and shovel handle | |
| GB282823A (en) | Improvements in or relating to rivets | |
| US2257326A (en) | Billiard cue | |
| US2504601A (en) | Auger drill | |
| US1478124A (en) | Coupling | |
| GB279691A (en) | Improvements relating to the manufacture of pillars, columns or the like | |
| GB306186A (en) | Improvements in ground anchors | |
| US1438855A (en) | Plug or socket for receiving screws or like fastenings | |
| GB191416A (en) | An improved method of and means for making dowel-joints in constructional woodwork an the like | |
| US1618527A (en) | Reenforcing truss or frame | |
| US1812373A (en) | Method of forming d-handles | |
| GB335282A (en) | ||
| US2140820A (en) | Connecting pin | |
| US1682895A (en) | Shaft coupling | |
| US1667227A (en) | Bushing remover | |
| US1365596A (en) | Roller-bearing cage | |
| US1392800A (en) | Rolled metal section | |
| US1857519A (en) | Method of splicing paper cores, tubes, and the like | |
| US1577343A (en) | Tie | |
| US2211502A (en) | Tennis and other like racket handle | |
| US1911819A (en) | Cross t | |
| DE364160C (en) | Perforated brick |