US279962A - Thomas a - Google Patents
Thomas a Download PDFInfo
- Publication number
- US279962A US279962A US279962DA US279962A US 279962 A US279962 A US 279962A US 279962D A US279962D A US 279962DA US 279962 A US279962 A US 279962A
- Authority
- US
- United States
- Prior art keywords
- shaft
- jaws
- sleeve
- thomas
- tool
- 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 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000005422 blasting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 210000003462 vein Anatomy 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
- This invention relates to certain new and useful improvements in mining-tools for 100s ening coal from its holdings, and is designed to be used in lieu of the ordinary blasting processes; and it consists in the peculiar arrangement and construction of parts, as will be here inafter described.
- Figurel is an end and side view of my improved implement, showing the spring-j aws closed and the tool ready for insertion in the hole or opening in the vein of coal.
- Fig. 2 is a similar view, showingthe jaws distended.
- Fig. 3 is a side view of the shaft; and
- Fig. 4 is a horizontal section, showing one of the spring-jaws.
- the letter A represents a shaft of suitable material and length, one end of which is pro vided with the conical screw a. The other end of this shaft is furnished with apertures 12, for the insertion of the bar for turning the shaft.
- a sleeve, B Surrounding the shaft is a sleeve, B,
- This sleeve is split at one end and partially cut away, so as to form a pair of spring-jaws, c c,
- the operation of the device is as follows:
- the implement, with the sleeve and shaft in the position shown in Fig. 1, is inserted into the ordinary shot-hole drilled in the face of the coal-vein.
- the shaft A is turned in the proper direction, which causes the screw a to travel in the threads 01 d of jaws c 0, thus moving the shaft through the sleeve, and at the same time spreading or distending the jaws c c, as shown in Fig. 2.
- the spreading of the jaws will split or force the coal loose from its holdings.
- By turning the shaft in the opposite direction the jaws can be closed, and the tool is ready for another insertion.
- a mining-tool composed of a shaft havinga conical screw-threaded point and a sleeve formed with internally-threaded spring-jaws, the shaft being adapted to operate in the sleeve and distend the jaws, as described.
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)
- Mechanical Means For Catching Fish (AREA)
Description
(N0 MOdel.)
T. A MAYES.
MINING TOOL, No. 279,962. Patented June 26,1883,
' d/Iio UNITED STATES PATENT OFFICE.
THOMAS A. MAYES, OF PHILIPSBURG, PENNSYLVANIA.
MINING-TOOL.
SPECIFICATION forming part of Letters Patent No. 279,962, dated June 26, 1883.
Application filed April 16, 1883.
To all whom it may concern:
Be it known that I, THOMAS A. IVIAYES, a citizen of the United States, residing at Philipsburg, in the county of Centre and State of Pennsylvania, have invented certain new and useful Improvements in lllining-Tools; and I do declare the following to be a full, clear, and exact description of the invention, such as will. enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.
This invention relates to certain new and useful improvements in mining-tools for 100s ening coal from its holdings, and is designed to be used in lieu of the ordinary blasting processes; and it consists in the peculiar arrangement and construction of parts, as will be here inafter described. a
In the annexed drawings, which fully illustrate my invention, Figurel is an end and side view of my improved implement, showing the spring-j aws closed and the tool ready for insertion in the hole or opening in the vein of coal. Fig. 2 is a similar view, showingthe jaws distended. Fig. 3 is a side view of the shaft; and Fig. 4 is a horizontal section, showing one of the spring-jaws.
The letter A represents a shaft of suitable material and length, one end of which is pro vided with the conical screw a. The other end of this shaft is furnished with apertures 12, for the insertion of the bar for turning the shaft. Surrounding the shaft is a sleeve, B,
in which the shaft slides and revolves. This sleeve is split at one end and partially cut away, so as to form a pair of spring-jaws, c c,
(No model.)
- as shown in Fig. 2. These jaws are provided with internal screw-threads, d (l, as seen in Fig. 1, which serve as nuts for the screw a to work in when the shaft A is turned.
The operation of the device is as follows: The implement, with the sleeve and shaft in the position shown in Fig. 1, is inserted into the ordinary shot-hole drilled in the face of the coal-vein. The shaft A is turned in the proper direction, which causes the screw a to travel in the threads 01 d of jaws c 0, thus moving the shaft through the sleeve, and at the same time spreading or distending the jaws c c, as shown in Fig. 2. The spreading of the jaws will split or force the coal loose from its holdings. By turning the shaft in the opposite direction the jaws can be closed, and the tool is ready for another insertion.
Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-
1. In a coal-mining tool, the combination, with a shaft,'A, provided at one end with a conical screw, a, of a sleeve, B, having springjaws 0, provided with internal screw-threads, d 01, substantially as and for the purpose shown and described.
2. A mining-tool composed of a shaft havinga conical screw-threaded point and a sleeve formed with internally-threaded spring-jaws, the shaft being adapted to operate in the sleeve and distend the jaws, as described.
In testimony whereof I affix my signature in presence of two witnesses.
THOMAS A. MAYES.
Witnesses:
E. O. BLACKBURN, M. O. FRYBERGER.
Publications (1)
Publication Number | Publication Date |
---|---|
US279962A true US279962A (en) | 1883-06-26 |
Family
ID=2349179
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US279962D Expired - Lifetime US279962A (en) | Thomas a |
Country Status (1)
Country | Link |
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US (1) | US279962A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2739798A (en) * | 1952-11-18 | 1956-03-27 | Bituminous Coal Research | Burster element for boring type continuous mining machines |
-
0
- US US279962D patent/US279962A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2739798A (en) * | 1952-11-18 | 1956-03-27 | Bituminous Coal Research | Burster element for boring type continuous mining machines |
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