US148273A - Improvement in rock-drillimg machines - Google Patents
Improvement in rock-drillimg machines Download PDFInfo
- Publication number
- US148273A US148273A US148273DA US148273A US 148273 A US148273 A US 148273A US 148273D A US148273D A US 148273DA US 148273 A US148273 A US 148273A
- Authority
- US
- United States
- Prior art keywords
- rock
- piston
- improvement
- machines
- drillimg
- 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
- 238000010276 construction Methods 0.000 description 4
- 230000001419 dependent Effects 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/10—Connection to driving members
- F16J1/14—Connection to driving members with connecting-rods, i.e. pivotal connections
- F16J1/22—Connection to driving members with connecting-rods, i.e. pivotal connections with universal joint, e.g. ball-joint
Definitions
- My invention consists in partially rotating the piston-rod at each backward stroke by means of a jet of air or steam directed from the induction-port upon the head of the piston, which is fluted, or otherwise provided with ledges or projecting surfaces for it to impinge against, by which arrangement the end of the drill is made to strike a new portion of the rock at each blow, thereby facilitating the formation of the hole or bore required.
- A is the cylinder, 13 he piston, and O the piston-rod, ot' a rockdrill.
- a a are the induction, and Z) Z) the exhaust, ports, controlled, respectively, by the inlet-valves c c and the outlet-valves d [1. cf
- valve-stems connected with eccentric rods 1 h, operated by eccentrics i k on the crank-shaft D of a small independent motor or engine, driw'en by air, steam, or other suitable power, and secured by bolts or otherwise to the back or rear head of the cylinder A of the rock-drill.
- E is the cylinder
- F the piston, of my said independent engine, the piston-rod l of which is secured to the crank-shaft D.
- m a are the ports or passages by which air or steam is admitted into the cylinder E. These ports are controlled by a single valve, G, secured to the valve-stem 0, connected with an eccentric rod, 1), operated by the eccentric g on the crank-shaft D.
- the head'of the piston is fluted at 5, and the inner end of the inductionport a is curved around toward it, so as to direct a jet of steam or air thereon at each bacla ward stroke of the piston, in order that the piston-rod may be partially rotated, to insure the end of the drill striking the rock at a different point at each succeeding blow, whereby the hole is formed with greater ease and rapidity.
- a piston the head of which is fluted or provided with ledges or projections, in combination with an induction-port so formed as to direct a jet of steam or air across them, substantially as described, for the purpose setforth.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Valve Device For Special Equipments (AREA)
Description
EDIVARD S. VINCHESTER, OF BOSTON, MASSACHUSETTS.
IMPROVEMENT IN ROCK=DRILLING MACHlNES.
Specification forming part of Letters Patent No. 148,2?3, dated March 3, 1874; application filed January 15, 1874.
To all whom it may concern:
Be it known that I, EDWARD S. WiNonEs- TER, of Boston, in the county of Suffolk and State of ll'lassa'chusetts, have invented certain Improvements in Rock-Drilling Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings making part of this specification, in which- Figure 1 is a longitudinal central section, representing a rock-drill having my improvements applied thereto.
My invention consists in partially rotating the piston-rod at each backward stroke by means of a jet of air or steam directed from the induction-port upon the head of the piston, which is fluted, or otherwise provided with ledges or projecting surfaces for it to impinge against, by which arrangement the end of the drill is made to strike a new portion of the rock at each blow, thereby facilitating the formation of the hole or bore required.
To enable others skilled in the art to understand and use my invention, I will proceed to describe the manner in which I have carried it out.
In the said drawings, A is the cylinder, 13 he piston, and O the piston-rod, ot' a rockdrill. a a are the induction, and Z) Z) the exhaust, ports, controlled, respectively, by the inlet-valves c c and the outlet-valves d [1. cf
are the valve-stems, connected with eccentric rods 1 h, operated by eccentrics i k on the crank-shaft D of a small independent motor or engine, driw'en by air, steam, or other suitable power, and secured by bolts or otherwise to the back or rear head of the cylinder A of the rock-drill. E is the cylinder, and F the piston, of my said independent engine, the piston-rod l of which is secured to the crank-shaft D. m a are the ports or passages by which air or steam is admitted into the cylinder E. These ports are controlled by a single valve, G, secured to the valve-stem 0, connected with an eccentric rod, 1), operated by the eccentric g on the crank-shaft D. The head'of the piston is fluted at 5, and the inner end of the inductionport a is curved around toward it, so as to direct a jet of steam or air thereon at each bacla ward stroke of the piston, in order that the piston-rod may be partially rotated, to insure the end of the drill striking the rock at a different point at each succeeding blow, whereby the hole is formed with greater ease and rapidity.
From the foregoing construction it will be seen that, as steam or air is admitted into the cylinder E of the in dependent motor, the crankshaft D is revolved, causing (through the connections above described) the iiuluction-valve c of the cylinder of the rock-drill to open, thus allowing steam or air to enter and move the piston B in the direction of the arrow, the exhaust-port I) being open. On the completion of the torward stroke of the piston, the induction-valve c is closed and that 0 opened, the exhaust I) being open and thatb being closed,
thereby causing the piston to move in the opposite direction, the action of the valves being positive, and the valves moving with unerring certainty, irrespective of the length of the stroke of the piston and the amount of feed of the drill.
By the employment of an independent motor for actuating the valves of the cylinder of the drill, the latter is made to follow the movement of the valves, and is entirely dependent thereon, instead of controlling their action, as in rock-drills ot' the ordinary construction; consequently the wear and breakage of the parts, and the suspension of the work incident thereto, are avoided.
I claim A piston the head of which is fluted or provided with ledges or projections, in combination with an induction-port so formed as to direct a jet of steam or air across them, substantially as described, for the purpose setforth.
itness my hand this 12th day of January, 1874.
EDIVARD S. WINCHESTER.
In presence of- N W. STEARNS, W. J. CAMBRIDGE.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US148273A true US148273A (en) | 1874-03-03 |
Family
ID=2217686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US148273D Expired - Lifetime US148273A (en) | Improvement in rock-drillimg machines |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US148273A (en) |
-
0
- US US148273D patent/US148273A/en not_active Expired - Lifetime
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