US17732A - Improvement in dry-sand cores - Google Patents
Improvement in dry-sand cores Download PDFInfo
- Publication number
- US17732A US17732A US17732DA US17732A US 17732 A US17732 A US 17732A US 17732D A US17732D A US 17732DA US 17732 A US17732 A US 17732A
- Authority
- US
- United States
- Prior art keywords
- sand
- dry
- improvement
- core
- glue
- 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
- 239000004576 sand Substances 0.000 title description 34
- 239000002184 metal Substances 0.000 description 20
- 229910052751 metal Inorganic materials 0.000 description 20
- 239000003292 glue Substances 0.000 description 18
- 210000004369 Blood Anatomy 0.000 description 14
- 239000008280 blood Substances 0.000 description 14
- 238000005266 casting Methods 0.000 description 12
- 239000000203 mixture Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 235000013312 flour Nutrition 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive Effects 0.000 description 2
- 235000013405 beer Nutrition 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 235000013379 molasses Nutrition 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
- B22C1/22—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins
- B22C1/2293—Natural polymers
Definitions
- the core requires no vent other than what it possesses from its porous character.
- the core may be perfectly dry when it is set into the mold, yet it will absorb more or less moisture. Now, when the melted metal is poured into the mold this moisture is vaporized, which vapor must find vent or the metal will blow.
- cores made in the common way artificial vents must be made to allow the escape of this vapor. These artificial vents are liable to get stopped or closed up when the metal is poured, in which case the metal will blow and the casting be spoiled.
- cores which are made according to our process no artificial vents are required, and there is no danger that the core will break or the metal blow.
- the glue or blood is comparatively incombustible. Consequently there is little or no gas or vapor formed in consequence of combustion by contact with the melted metal.
- the interstices between the particles of sand are left open, and the particles of sand are made to cohere at their sharp angles with great tenacity, and consequently a much cheaper, stronger, and more reliable core is produced.
- the core can be removed after the casting has been made with much greater facilitythan the common material, as a few blows from a hammer will loosen the sand around the outside, when the core can be easily removed.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Prostheses (AREA)
Description
UNITED STATES PATENT OFFICE.
WM. GAGE AND It. B. FELTHOUSEN, OF BUFFALO, NEW YORK.
IMPROVEMENT IN DRY-SAND CORES.
To all whom it may concern:
Be it known that we, WILLIAM GAGE and RICHARD B. FELTHOUSEN, of the city of Butfalo, county of Erie, and State of New York, have invented a new and useful Improvement in the Composition of Dry- Sand Cores for Founding Purposes; and we do hereby declare that the following is a full and exact de scription thereof.
The nature of our invention consists in the application and use of glue and blood (or their equivalent) dissolved in water as an adhesive mixture with sand for the purpose of forming cores to be used in the art of casting melted metals into any article according to a given design or pattern.
To enable others skilled in the art to make and use our invention, we will proceed to describe the process of compounding and using the same.
We use sand cleaned and prepared in the usual way. We make a weak solution of glue in water, and then mix the sand with this glue- Water to give it such a plastic nature that it may be formed into the required shape for the core. When the sand is thus prepared the core is formed in any well-known manner, and when dried it will be hard and strong enough to stand the pressure of the melted metal when it is poured around it. The glue adheres to the sharp angles of the sand and sticks them together, giving the sand an exceedingly porous nature and sufficient strength for the purposes required. Sand cores prepared in the manner described are exceedingly strong and porous, and possess a number of advantages over sand cores prepared in the common way.
First. The core requires no vent other than what it possesses from its porous character. Although the core, whether formed in the old way or according to our improvement, may be perfectly dry when it is set into the mold, yet it will absorb more or less moisture. Now, when the melted metal is poured into the mold this moisture is vaporized, which vapor must find vent or the metal will blow. In cores made in the common way artificial vents must be made to allow the escape of this vapor. These artificial vents are liable to get stopped or closed up when the metal is poured, in which case the metal will blow and the casting be spoiled. When cores are used which are made according to our process no artificial vents are required, and there is no danger that the core will break or the metal blow.
Second. When cores are made in the old way (by mixing flour with sand, and wetting the same with beer, molasses, or water, or otherwise) the interstices between the particles of sand are filled by the flour or other matter, and consequently when the melted metal comes in contact with it the flour, &c., consumes, and produces a gas or vapor, which must be conducted off by artificial vents or the casting will be lost. It is exceedingly difficult to proportion these vents in the core. If they are too large, they will weaken the core and cause it to break. If too small, they will not conduct off all the. gas, and the metal will blow and the casting be lost. In either case they are liable to get choked in the act of pouring, and the mold and the casting will then be spoiled. By the use of glue in solution (or blood) as an incombustible cohesive mixture with sand the difiiculty is remedied.
. The glue or blood is comparatively incombustible. Consequently there is little or no gas or vapor formed in consequence of combustion by contact with the melted metal. The interstices between the particles of sand are left open, and the particles of sand are made to cohere at their sharp angles with great tenacity, and consequently a much cheaper, stronger, and more reliable core is produced.
Third. The core can be removed after the casting has been made with much greater facilitythan the common material, as a few blows from a hammer will loosen the sand around the outside, when the core can be easily removed.
Fourth. It is less expensive and easier made than those made of the common ingredients, and may be used with greater safety and by less skillful workmen.
What we have already said in relation to glue will apply equally well in regard to blood, and is applicable thereto. \Ve also use blood in mixture with glue, and where a very strong core is required we think that a solution of glue and blood is preferable.
We claim The application and use of glue or blood (either separately or in combination) mixed with sand for the purpose of making dry-sand cores for founding purposes, substantially as herein described.
WM. GAGE. R. B. FELTHOUSEN.
Witnesses:
E. B. FORBUSH, WILLIAM DAvIs, E. B. VEDDER.
Publications (1)
Publication Number | Publication Date |
---|---|
US17732A true US17732A (en) | 1857-07-07 |
Family
ID=2080440
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17732D Expired - Lifetime US17732A (en) | Improvement in dry-sand cores |
Country Status (1)
Country | Link |
---|---|
US (1) | US17732A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5718750A (en) * | 1996-04-24 | 1998-02-17 | Weggel; Craig R. | Sand composition having improved adhesion |
-
0
- US US17732D patent/US17732A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5718750A (en) * | 1996-04-24 | 1998-02-17 | Weggel; Craig R. | Sand composition having improved adhesion |
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