US165068A - Improvement in apparatus for casting steel - Google Patents
Improvement in apparatus for casting steel Download PDFInfo
- Publication number
- US165068A US165068A US165068DA US165068A US 165068 A US165068 A US 165068A US 165068D A US165068D A US 165068DA US 165068 A US165068 A US 165068A
- Authority
- US
- United States
- Prior art keywords
- flask
- air
- improvement
- hopper
- valve
- 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
- 238000005266 casting Methods 0.000 title description 3
- 229910000831 Steel Inorganic materials 0.000 title description 2
- 239000010959 steel Substances 0.000 title description 2
- 239000002184 metal Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 241000283153 Cetacea Species 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/06—Vacuum casting, i.e. making use of vacuum to fill the mould
Definitions
- A represents a flask or mold, which is made in any of the usual ways, and of suitable size.
- the bottom of this flask rests in a base, which is flanged, as seen, so that wet sand or other material may be inserted between the flange and the bottom of the mold, to make the bottom air-tight.
- a shortdistance below the mouth of the flask is a ledge out within the mouth. Resting upon this ledge is the bottom of a hopper, O.
- a flange is thus formed of the mouth of the flask, and between this and the hopper wet sand or other suitable material may be placed for making the mouth air-tight.
- M represents an opening in the flask, which is covered by glass, so that the interior of the flask may be seen.
- L represents apipe, which is connected to the flask near'its upper end, and which passes to an air-pump. The air is extracted from the flask by means of the air-pump through this pipe.
- I) represents a pipe or sleeve, which passes over a suitable guidestem, and which is provided on its lower end with a circular valve, a, to close a valve-opening, E, in the bottom of the hopper.
- the stem is connected to a cross-piece, 0, at the top of the hopper.
- the valve-sleeve is raised or lowered by means of a crank, 70, as seen.
- the bottom and top are first made air-tight, as mentioned.
- the valve closesits opening, and then the molten metal is poured in the hopper.
- the air having been exhausted from the flask, the valve a is slightly raised, so that the metal will pass into the flask in a small. stream.
- the metal it will be seen, is divided by the circular valve in its middle, and thus passes to the flask in the shape of a thin hollow cylinder.
- the influence of the vacuum is thus brought to bear upon almost every particle of metal, and the gases and air which get into it during the process of decarbonizatiou areremoved and carried away by the air-pump.
- the hopper is provided with a cover, which is intended to exclude the air or partially exclude the air from the hopper during the time the metal is passing down to the mold.
- WVe desire to prevent atmospheric pressure upon the metal. A partial vacuum may be formed, allowing a suflicient amount of air to remain to allow the metal to a pass down slowly into the mold.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Casting Devices For Molds (AREA)
Description
RIDE.
Apparatus for Casting Steei.
T. GRIT'G'HLOW & l.
Patented June 29,1875.
INVENTOR rVgTNESSES J Attorneys fHE GRAPHIC CO.PHOTO -LITI L39 8:41 PARK PLACE N.Y.
ivrrnn STATES PATENT OFFI IMPROVEMENT IN APPARATUS FOR CASTING STEEL.
Specification forming part of Letters Patent No. 165,068, dated J une 29, 1875 application filed June 18, 1875.
To all whom it may concern:
Be it known that we, THOMAS ORITGHLOW and JAMES KIDD, of Baldwin, in the county of Dauphin and in the State of Pennsylvania, have invented certain new and useful Improvements in Process and Apparatus for tion, and Fig. 3 a top view.
In the figures, A represents a flask or mold, which is made in any of the usual ways, and of suitable size. The bottom of this flask rests in a base, which is flanged, as seen, so that wet sand or other material may be inserted between the flange and the bottom of the mold, to make the bottom air-tight. A shortdistance below the mouth of the flask is a ledge out within the mouth. Resting upon this ledge is the bottom of a hopper, O. A flange is thus formed of the mouth of the flask, and between this and the hopper wet sand or other suitable material may be placed for making the mouth air-tight. M represents an opening in the flask, which is covered by glass, so that the interior of the flask may be seen. L represents apipe, which is connected to the flask near'its upper end, and which passes to an air-pump. The air is extracted from the flask by means of the air-pump through this pipe. I) represents a pipe or sleeve, which passes over a suitable guidestem, and which is provided on its lower end with a circular valve, a, to close a valve-opening, E, in the bottom of the hopper. The stem is connected to a cross-piece, 0, at the top of the hopper. The valve-sleeve is raised or lowered by means of a crank, 70, as seen.
In using this flask, the bottom and top are first made air-tight, as mentioned. The valve closesits opening, and then the molten metal is poured in the hopper. The air having been exhausted from the flask, the valve a is slightly raised, so that the metal will pass into the flask in a small. stream. The metal, it will be seen, is divided by the circular valve in its middle, and thus passes to the flask in the shape of a thin hollow cylinder. The influence of the vacuum is thus brought to bear upon almost every particle of metal, and the gases and air which get into it during the process of decarbonizatiou areremoved and carried away by the air-pump.
It will be seen that the hopper is provided with a cover, which is intended to exclude the air or partially exclude the air from the hopper during the time the metal is passing down to the mold. WVe desire to prevent atmospheric pressure upon the metal. A partial vacuum may be formed, allowing a suflicient amount of air to remain to allow the metal to a pass down slowly into the mold.
Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent, is
l. The combination, with a flask in which a vacuum is maintained, of the closed hopper 0, provided with a valve, the valve-opening constructed to allow the molten metal to flow into the flask in a thin stratum, for the purposes .set forth.
THOS. GRITCHLOYV. J AMES KIDD.
WVitnesses:
E. G. PAINTER, WILLIAM LONGENEBER,
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US165068A true US165068A (en) | 1875-06-29 |
Family
ID=2234477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US165068D Expired - Lifetime US165068A (en) | Improvement in apparatus for casting steel |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US165068A (en) |
-
0
- US US165068D patent/US165068A/en not_active Expired - Lifetime
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