US257938A - Geokge m - Google Patents
Geokge m Download PDFInfo
- Publication number
- US257938A US257938A US257938DA US257938A US 257938 A US257938 A US 257938A US 257938D A US257938D A US 257938DA US 257938 A US257938 A US 257938A
- Authority
- US
- United States
- Prior art keywords
- bolts
- bar
- rock
- piston
- head
- 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
- 206010010254 Concussion Diseases 0.000 description 8
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 206010022114 Injury Diseases 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910000754 Wrought iron Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000284 resting Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/226—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having elastic elements, e.g. springs, rubber pads
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T292/00—Closure fasteners
- Y10T292/20—Clamps
- Y10T292/221—Screw and nut
Definitions
- Rock-drills are usually made with a cylinder containing a pisten, the rod of which is connected with the rock-drill.
- the heads of the cylinder have been bolted together by bolts running through both heads.
- the piston sometimes strikesupon the forward head in consequence of the drill entering a seam in the rock, or passing into a soft portion of such rock, and the bolts are often broken.
- a cushioning device has been used to lessen the concussion; but this does not relieve thebolts from the concussion,which appears to granulate or crystallizc the metal, and cause the same' to break.
- My present invention is made for inpartiug elasticity to the bolts themselves, so that they will'yield when the piston strikes against the inside of the head, and prevent iujury to the parts.
- Figure 1 is a vertical section of the cylinder
- Fig. 2 is au elev'ation of one of the bolts and its nuts, and section of the cross-bar.
- the piston a, piston-rod b, and cylinder c are of the usual character employed with rockdrills, and the heads d 'and e are also of ordinary Construction, except that the back head is made convex in the center, as at f.
- the heads d and e have holes through them for the passage of the bolts IL, and the nuts i are applied at the ends of the bolts; but said bolts, instead of being straight, are zigzag in compound curved liues, as seen in Fig.
- the bolts h having the compound curved bends may pass from one head to the other, or there may be separate bolts for the respective heads. lu this latter case there will be lugs near the middle of the cylinder for the respectivc bolts.
- the cross-bar l should receive a set or bend in one direction, it may be turned over so that the tendency will be to bend the same in the other direction.
- This bar may be of metal or of Wood, or of metal and wood in layers.
Description
'UNITED STATES PATENT OFFICE.
GEORGE M. GITHENS, OF BROOKLYN,` NEW YORK.
STEAM ROCK-DRILL.
SPECIFICATION forming part of Letters Patent No. 25'7,938, dated May 16, 1882. Application filed September 30,1881. (No model.)
To all zrhom it may conce'n u Be it known that I, GEORGE M. GITHENS, of Brooklyn, E. D., in the county of Kings and State of New York, have invented an Im provement in Steam Rock-Drills, of which the following isa specification.
Rock-drills are usually made with a cylinder containing a pisten, the rod of which is connected with the rock-drill. The heads of the cylinder have been bolted together by bolts running through both heads. When the drill is in use the piston sometimes strikesupon the forward head in consequence of the drill entering a seam in the rock, or passing into a soft portion of such rock, and the bolts are often broken. A cushioning device has been used to lessen the concussion; but this does not relieve thebolts from the concussion,which appears to granulate or crystallizc the metal, and cause the same' to break.
My present invention is made for inpartiug elasticity to the bolts themselves, so that they will'yield when the piston strikes against the inside of the head, and prevent iujury to the parts. e p i In the drawings, Figure 1 is a vertical section of the cylinder, and Fig. 2 is au elev'ation of one of the bolts and its nuts, and section of the cross-bar. i
The piston a, piston-rod b, and cylinder c are of the usual character employed with rockdrills, and the heads d 'and e are also of ordinary Construction, except that the back head is made convex in the center, as at f. The heads d and e have holes through them for the passage of the bolts IL, and the nuts i are applied at the ends of the bolts; but said bolts, instead of being straight, are zigzag in compound curved liues, as seen in Fig. 2, so that said bolts are longer than they otherwise would be, and the extra'legth is taken up in the bends, and hence such bolts become springs that are verytrigid, and do not yield to the pressure of steam, or' the ordinary conditions of use 5 but in case the piston strikes against the inner surface of the head d, the bolts will yield instead of becoming injured. As an ad ditional protection against injury, I apply a cross-bar, I, with eyes or forks at its ends for the bolts to pass through, such cross-bar resting upon the convexity or central hearing of the back head, and the nuts of the rods coming up against this bar at its ends, so that said bar becomes a very stifi' leverspring that bends slightly under severe concussion. This bar is preferably of wrought iron or steel, and the risk of injury to the parts by concussion is lessened by the yieldin g character of the bar.
The bolts h having the compound curved bends may pass from one head to the other, or there may be separate bolts for the respective heads. lu this latter case there will be lugs near the middle of the cylinder for the respectivc bolts.
lt' the cross-bar l should receive a set or bend in one direction, it may be turned over so that the tendency will be to bend the same in the other direction. This bar may be of metal or of Wood, or of metal and wood in layers.
I claim as my invention i 1. The conhination, with the piston, cylin-- same, and bolts passing through the ends of So the cross-bar, for the purposes and substantially as set forth.
3. The combination, with thecylinder and piston in a rock-drill, of a head having a een tral hearing, a cross-bar, bolts having the bodies bent into curved liues, and nuts, substantially as set forth.
Signed by me this 2Tthday of September, A. D. 1881.
GEO. M. 'GETE ENS.
Witnesses GEO. T. PINCKNEY, WILLIAM G. MOTT.
Publications (1)
Publication Number | Publication Date |
---|---|
US257938A true US257938A (en) | 1882-05-16 |
Family
ID=2327223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US257938D Expired - Lifetime US257938A (en) | Geokge m |
Country Status (1)
Country | Link |
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US (1) | US257938A (en) |
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- US US257938D patent/US257938A/en not_active Expired - Lifetime
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