US425532A - Rock-drill - Google Patents
Rock-drill Download PDFInfo
- Publication number
- US425532A US425532A US425532DA US425532A US 425532 A US425532 A US 425532A US 425532D A US425532D A US 425532DA US 425532 A US425532 A US 425532A
- Authority
- US
- United States
- Prior art keywords
- valve
- rock
- cylinder
- steam
- drill
- 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 6
- 238000005266 casting Methods 0.000 description 4
- 210000000038 chest Anatomy 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
- B25D9/14—Control devices for the reciprocating piston
- B25D9/16—Valve arrangements therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
- B25D9/06—Means for driving the impulse member
- B25D9/08—Means for driving the impulse member comprising a built-in air compressor, i.e. the tool being driven by air pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
- B25D9/14—Control devices for the reciprocating piston
- B25D9/16—Valve arrangements therefor
- B25D9/24—Valve arrangements therefor involving a rocking-plate type valve
Definitions
- the mums Pins 00.. mommmz, msmum'cm, a. c.
- My invention has reference to rock-drills, but more especially refers to the construction and operation of the valve mechanism for alternately opening and closing the ports leading, respectively, within the cylinder at opposite sides of the piston.
- Figure 1 is a detail plan of the cylinder with the steamchest removed; Fig. 2, a horizontal section through the same; Fig. 3, asection at the line a; a; of Fig. l, and also showing the steamchest in position; Fig. 4,- a section at the line g y of Fig. 3; Fig. 5, a detail bottom view of the valve; and Fig. 6, a detail broken-away plan, with the steam chest and valve removed.
- A is the cylinder, and B the piston.
- C is the exhaust
- D E the steam ports. Partitions a 1) separate the exhaust from the steam ports.
- 0 cl are sinks formed within the external surface of the cylinder adjacent to the steamports, but separated therefrom by partitions e f. These partitions a b e f form the seats for the valve, as will be presently set forth.
- F is the valve-stem extending within the cylinder and capable of a free rotation therein.
- a rock-bar G On the lower end of the stem is rigidly secured a rock-bar G, the ends whereof are bent upward, so as to extend within the piston-chamber H, the construction of said bar being obviously such that it cannot assume a position wherein one or both of said ends are not projected within said chamber. It will thus be readily understood that the reciprocation of the piston will cause the bar G to rock.
- I is the valve secured to the upper end of the stem F and straddling the exhaust and the ports.
- h is a partition, which divides the valve and rendersit double. (Seen at Figs. 3 and 4.)
- the partition 71. is shown seated upon the seat b, and the steam will-enter from the chest J, through the sink d, within the valve, and thence through the port D, within the cylinder.
- I have not shown the manner of introducing the steam within the cylinder from the ports, since this is done in the ordinary manner and forms no part of my present invention.
- the rocking of the stem F will cause the valve to be oscillated, whereby the ports are alternately opened for the passage of the steam within the cylinder, thereby efiecting the reciprocation of the piston.
- the especial feature of my invention is that the initial entrance of the'steam beneath the valve creates a balance, and the pressure required to operate the valve is one-half of what it ordinarily would be; also, my peculiarlyshaped rock-bar insures a positive movement of the valve without the use of intermediate tapp'ets, which latter become so worn by constant use as to drop away from their normal vertical position, and thereby cause an irregularity in the oscillation of the valve.
- the casting forming the cylinder having a flat surface, which forms the bottom of the steam-chest J and the valve-seat and is provided with steam-ports D E, exhaust-port G, and recesses c (2, in combination with the valve I, engaging its seat in said flat surface, the valve-stem F, arranged in said casting at right angles to the line of the cylinder and secured to the valve, the rock-lever G, having its ends projecting within the cylinder and carrying the valve-stem, and thepiston arranged to strike the said ends in its reciprocation, as set forth.
Description
(No Model.) 0 I 2 Sheets-Sheet 1. W. EL ADAMS ROCK DRILL.
No. 425,532. Patented Apr. 15, 1890.
The mums Pins: 00.. mommmz, msmum'cm, a. c.
(No-Model.) 2 sheets-sheet 2. W. HQ ADAMS.
ROCK DRILL. No. 425,532. Patented Apr. 15, 1890;
l I /J 3 mm i S k uillkm UNITED STATES PATENT OFFICE.
WALTER II. ADAMS, OF STAMFORD, CONNECTICUT.
ROCK-DRILL.
SPECIFICATION formingpart of Letters Patent N9. 425,532, dated April 15, 1890.
Application filed May 23, 1889. Serial No. 311,804. (No model.)
To all whom it may concern:
Be it known that I, WVALTER H. ADAMS, a citizen of the United States, residing at Stamford, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Rock-Drills; and Ido hereby 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.
My invention has reference to rock-drills, but more especially refers to the construction and operation of the valve mechanism for alternately opening and closing the ports leading, respectively, within the cylinder at opposite sides of the piston.
With these ends in view my invention consists in certain details of construction and combinations of elements, such as will be hereinafter fully set forth, and then specifically designated by the claim.
In the accompanying drawings, Figure 1 is a detail plan of the cylinder with the steamchest removed; Fig. 2, a horizontal section through the same; Fig. 3, asection at the line a; a; of Fig. l, and also showing the steamchest in position; Fig. 4,- a section at the line g y of Fig. 3; Fig. 5, a detail bottom view of the valve; and Fig. 6, a detail broken-away plan, with the steam chest and valve removed.
Similar letters denote like parts in the several figures.
A is the cylinder, and B the piston.
C is the exhaust, and D E the steam ports. Partitions a 1) separate the exhaust from the steam ports.
0 cl are sinks formed within the external surface of the cylinder adjacent to the steamports, but separated therefrom by partitions e f. These partitions a b e f form the seats for the valve, as will be presently set forth.
F is the valve-stem extending within the cylinder and capable of a free rotation therein. On the lower end of the stem is rigidly secured a rock-bar G, the ends whereof are bent upward, so as to extend within the piston-chamber H, the construction of said bar being obviously such that it cannot assume a position wherein one or both of said ends are not projected within said chamber. It will thus be readily understood that the reciprocation of the piston will cause the bar G to rock.
I is the valve secured to the upper end of the stem F and straddling the exhaust and the ports. h is a partition, which divides the valve and rendersit double. (Seen at Figs. 3 and 4.) In Fig. 4 the partition 71. is shown seated upon the seat b, and the steam will-enter from the chest J, through the sink d, within the valve, and thence through the port D, within the cylinder. I have not shown the manner of introducing the steam within the cylinder from the ports, since this is done in the ordinary manner and forms no part of my present invention. The rocking of the stem F will cause the valve to be oscillated, whereby the ports are alternately opened for the passage of the steam within the cylinder, thereby efiecting the reciprocation of the piston.
The especial feature of my invention is that the initial entrance of the'steam beneath the valve creates a balance, and the pressure required to operate the valve is one-half of what it ordinarily would be; also, my peculiarlyshaped rock-bar insures a positive movement of the valve without the use of intermediate tapp'ets, which latter become so worn by constant use as to drop away from their normal vertical position, and thereby cause an irregularity in the oscillation of the valve.
I claim The casting forming the cylinder, having a flat surface, which forms the bottom of the steam-chest J and the valve-seat and is provided with steam-ports D E, exhaust-port G, and recesses c (2, in combination with the valve I, engaging its seat in said flat surface, the valve-stem F, arranged in said casting at right angles to the line of the cylinder and secured to the valve, the rock-lever G, having its ends projecting within the cylinder and carrying the valve-stem, and thepiston arranged to strike the said ends in its reciprocation, as set forth.
In testimony whereof I affix my signature in presence of two witnesses.
WALTER II. ADAMS. Witnesses:
F. W. GILHULEY, S. S. VVILLIAMsoN.
Publications (1)
Publication Number | Publication Date |
---|---|
US425532A true US425532A (en) | 1890-04-15 |
Family
ID=2494446
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US425532D Expired - Lifetime US425532A (en) | Rock-drill |
Country Status (1)
Country | Link |
---|---|
US (1) | US425532A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100268917A1 (en) * | 2009-04-17 | 2010-10-21 | Lsi Corporation | Systems and Methods for Ramped Power State Control in a Semiconductor Device |
-
0
- US US425532D patent/US425532A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100268917A1 (en) * | 2009-04-17 | 2010-10-21 | Lsi Corporation | Systems and Methods for Ramped Power State Control in a Semiconductor Device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US425532A (en) | Rock-drill | |
US647351A (en) | Valve. | |
US514295A (en) | Steam or other fluid pressure engine | |
US112002A (en) | Improvement in slide-valves | |
US990304A (en) | Engine-valve. | |
US571751A (en) | Direct-acting pump | |
US367119A (en) | William s | |
US262899A (en) | Rotary valve and gear | |
US385967A (en) | Peters | |
US149068A (en) | Improvement in steam-engine valve-gears | |
US189400A (en) | Improvement in circular valves for steam-engines | |
US209305A (en) | Improvement in slide-valves | |
US283226A (en) | Bdwaed j | |
US105986A (en) | Improvement in valves for steam-engines | |
US152052A (en) | Improvement in steam-engines | |
US455810A (en) | Valve and seat for steam-engines | |
US200728A (en) | Improvement in rotary valves | |
US441782A (en) | Balanced slide-valve | |
US705730A (en) | Balanced slide-valve. | |
US85583A (en) | Improvement in steam-engine slide-valves | |
US608181A (en) | Valve for steam-pumps | |
US534753A (en) | mooee | |
US337184A (en) | Steam-engine | |
US280346A (en) | Half to john nelson watkins | |
US634422A (en) | Mining-engine. |