US164082A - Improvement in processes of blasting - Google Patents
Improvement in processes of blasting Download PDFInfo
- Publication number
- US164082A US164082A US164082DA US164082A US 164082 A US164082 A US 164082A US 164082D A US164082D A US 164082DA US 164082 A US164082 A US 164082A
- Authority
- US
- United States
- Prior art keywords
- bit
- blasting
- rod
- plug
- hole
- 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
- 238000000034 method Methods 0.000 title description 10
- 238000005422 blasting Methods 0.000 title description 6
- 239000011435 rock Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000010432 diamond Substances 0.000 description 4
- 239000002360 explosive Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 210000001364 Upper Extremity Anatomy 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000001808 coupling Effects 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 230000036633 rest Effects 0.000 description 2
- 230000000284 resting Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
- F42D1/18—Plugs for boreholes
Definitions
- My invention consists of a means of enlargin g the bore of long blast-holes at any desired point by the employment of a continuouslyrotating diamond expanding bit (whereof hereafter) in connection with a blasting-plug; a plug such as is described in my .Patent No. 147,253 being best fitted for the purpose.
- my process is as follows: The long hole is first bored to a depth of one or two hundred feet, as desired; then, at the point at which it is desired to explode the charge, a blasting-plug such as is described in my Patent No. 147,253 is inserted, and down to and upon this plug is inserted an expanding bit, such as is hereinafter described, which cuts an annular groove around the hole, such as is shown in section byXX, Fig. 2. The chamber once cut, the bit is removed and the charge inserted, filling up the chamber completely, tamped and fired, and the process repeated as desired.
- the advantage is an immense gain of sectional area for the explosive to act against, insuring a most effective and square blast.
- A is a hollow cylinder or casing of metal.
- B is an inner rod, fitting closely within A, and having a lengthwise movement therein.
- N is a coupling at the upper extremity of B, whereby B is attached to the rod of the drill.
- Running throughout the rod B is a hole or water-passage, I. Cut or formed upon the cylinder A are one or more slots, 70, parallel to its axis. Passing through the rod B, or attached to it, are one or more rivets, plugs, or studs, M, projecting into the slots 76 of the cylinder A, and serving to prevent any rotation of the rod B within the cylinder, but forcing rod and cylinder to rotate together; serving also to control the thrust or lengthwise motion of the rod to the length of the slots themselves.
- D is the bit-a curved bar of metal of the form shown-carrying upon its outer end the cutting-diamonds. It is completely perforated by a hole, H, which serves, in connection with the passage I in the rod B, to afford continuous communication for water with the cutting-surface.
- the bit is connected, by a link-coupling, G, to the rod B, the connection being the pivots a a, and rigid in construction. formed with an interior solid incline, O, of the same curvature as the bit, and upon and against which the bit slides and bears as pressure is brought upon it by the feed or otherwise.
- the cutting end of the bit passes, when caused to project, through an opening, 0, in the casing A.
- F is a loose collar, connected with the casing A by the screw-pin G, which, resting upon the blasting-plug Z, forms a bearing-surface for the casing, upon which it rotates easily.
- the plug Z is inserted until its outer end is at the point where it is desired to enlarge the hole; then the expanding bit, hereinbefore described, is inserted (attached to the rods of a drilling-machine) until the collar F rests upon the plug.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Earth Drilling (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Description
G. FRISBEE. Process of Blasting.
Patented June 8,1875.
UNITED IMPROVEMENT IN PRGCESSES OF BLASTING.
Specification forming part of Letters Patent N0- E 6 fi,02, dated June 8, 1875; application filed November 23, 1874.
To all whom it may concern:
Be it known that l, GIDEON FRIsBEE, of Reading, in the county of Berks and State of Pennsylvania, have invented a new and useful Means of Enlarging the Bore of Long Blast-Holes at any desired point; and I do hereby declare the following to be a full, clear, and precise description of the same, which will enable those skilled in the art to which my process appertains to use it, reference being had to the accompanyingdrawings, which form part of this specification, and in which-- Figure l is a longitudinal section of the expanding bit used to enlarge the hole; and Fig. 2, a longitudinal section of aportion of the long hole M, together with the expanded recess or enlargement of the hole, X, produced by the bit aforesaid, the blasting-plug described in my Patent No. 147,253 being shown inserted.
My invention consists of a means of enlargin g the bore of long blast-holes at any desired point by the employment of a continuouslyrotating diamond expanding bit (whereof hereafter) in connection with a blasting-plug; a plug such as is described in my .Patent No. 147,253 being best fitted for the purpose.
In operation my process is as follows: The long hole is first bored to a depth of one or two hundred feet, as desired; then, at the point at which it is desired to explode the charge, a blasting-plug such as is described in my Patent No. 147,253 is inserted, and down to and upon this plug is inserted an expanding bit, such as is hereinafter described, which cuts an annular groove around the hole, such as is shown in section byXX, Fig. 2. The chamber once cut, the bit is removed and the charge inserted, filling up the chamber completely, tamped and fired, and the process repeated as desired.
The advantage is an immense gain of sectional area for the explosive to act against, insuring a most effective and square blast.
For the better information of the public I will proceed to describe the construction of such a bit as I find convenient to bore the chamber, reference being had to Fig. 1 of the drawing.
A is a hollow cylinder or casing of metal.
B is an inner rod, fitting closely within A, and having a lengthwise movement therein. N is a coupling at the upper extremity of B, whereby B is attached to the rod of the drill. Running throughout the rod B is a hole or water-passage, I. Cut or formed upon the cylinder A are one or more slots, 70, parallel to its axis. Passing through the rod B, or attached to it, are one or more rivets, plugs, or studs, M, projecting into the slots 76 of the cylinder A, and serving to prevent any rotation of the rod B within the cylinder, but forcing rod and cylinder to rotate together; serving also to control the thrust or lengthwise motion of the rod to the length of the slots themselves. D is the bit-a curved bar of metal of the form shown-carrying upon its outer end the cutting-diamonds. It is completely perforated by a hole, H, which serves, in connection with the passage I in the rod B, to afford continuous communication for water with the cutting-surface. The bit is connected, by a link-coupling, G, to the rod B, the connection being the pivots a a, and rigid in construction. formed with an interior solid incline, O, of the same curvature as the bit, and upon and against which the bit slides and bears as pressure is brought upon it by the feed or otherwise. The cutting end of the bit passes, when caused to project, through an opening, 0, in the casing A. F is a loose collar, connected with the casing A by the screw-pin G, which, resting upon the blasting-plug Z, forms a bearing-surface for the casing, upon which it rotates easily.
In operation, after the long hole M is bored, the plug Z is inserted until its outer end is at the point where it is desired to enlarge the hole; then the expanding bit, hereinbefore described, is inserted (attached to the rods of a drilling-machine) until the collar F rests upon the plug. Water is then introduced from the drill-rods, the drilling-machine is started, rotating the entire device described, and the feed is applied, which, forcing down upon the rod B, forces down upon the connecting-link (J, the connecting-link in turn forces down upon the curved bar D, which, by virtue of its curvature and the directing influence of the incline O, presses out laterally The lower end of the casing A is upon the rock, in the direction of the dotted lines D b, cutting as it rotates an annular groove or chamber in the rock, of the form of which X X of Fig. 2 is, the section. The extent to which the bit can project is controlled by the length of the slots 70 in the casing A, controlling as they do the thrust of the rod B. Then, when it is desired to remove the drill, the feed is reversed, and the bit being thereby retracted into the casin g, the entire tool can be Withdrawn.
Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-
The process of blasting rock by inserting a plug in a common long hole-bore at any desired point, and enlarging the hole at that point, to form a chamber for holding explosive, by means of an expanding bit placed and operated upon the plug, substantially as described.
GIDEON FRISBEE.
Witnesses A. CAMPBELL, O. LITTLE.
Publications (1)
Publication Number | Publication Date |
---|---|
US164082A true US164082A (en) | 1875-06-08 |
Family
ID=2233491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US164082D Expired - Lifetime US164082A (en) | Improvement in processes of blasting |
Country Status (1)
Country | Link |
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US (1) | US164082A (en) |
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- US US164082D patent/US164082A/en not_active Expired - Lifetime
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