US251719A - Crucible - Google Patents
Crucible Download PDFInfo
- Publication number
- US251719A US251719A US251719DA US251719A US 251719 A US251719 A US 251719A US 251719D A US251719D A US 251719DA US 251719 A US251719 A US 251719A
- Authority
- US
- United States
- Prior art keywords
- crucible
- asbestus
- knapp
- crucibles
- paper
- 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
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000002459 sustained Effects 0.000 description 2
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
- C23C14/243—Crucibles for source material
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
Definitions
- This invention relates to cer# tain new and useful improvements in the manufacture of crucibles especially designed-for dentists and jewelers use in melting metals7 although I intend not to confine myself to the small crncibles used in those professions, but make them of any size required.
- the metal is usually melted under the action of heat directed and accelerated by the blast of a blow-pipe, and this strong blast, intensifying the heat as it does, has a tendency rapidly to destroy and render ⁇ entirely useless the best crucibles now to be found in the market.
- the object ot my invention therefore, is to provide a Crucible which will not be injured or destroyed under those circumstances.
- Figure 1 represents a crucible for dental purposes unattached.
- Fig. 2 represents the same in a ladle or metallic Crucible with a handle, by which to support it.
- A represents a crucible for dentists use, in which to melt metals employed for dental purposes.
- the main feature of this Crucible is in the employment of asbestus in its construction. This may be done by the use of what is known as mill-board, which is made of asbestus ber mixed with a little paper-stock. When made of this board the heat to which itis subjected in use will destroy the paper-stock, and then, if undue pressure is brought to bear upon the crucible, it
- a crucible made in two parts, the inner one composed of asbestus fiberand paper-stock mixed and pressed into shape and the outer part made of metal for supporting the inner part, substantially as described.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Structural Engineering (AREA)
- Adornments (AREA)
Description
(N0 Model.)
M. H. KNAPP.
GRUGIBLE.
No. 251,719'. Patented Jah. 3,1882.
N. PETERS. PnulmLiumpmpher. wnshingion. D. C.
UNITED STATES PATENT OFFICE.
.MII/PON. H. KNAPP, 0F ADRIAN, MICHIGAN.
CRUC l BLE.
SPECIFICATION forming* part of Letters Patent No. 251,719, dated January 3, 1882.
v Application tiled September 28,1881. (Nomodel.)
To all whom it may concern:
Be it known that I, MILTON H. KNAPP, of Adrian, in the county of Lenawee and State of Michigan, have invented an Improvement in Crucibles, of which the following is a specification.
The nature of this invention relates to cer# tain new and useful improvements in the manufacture of crucibles especially designed-for dentists and jewelers use in melting metals7 although I intend not to confine myself to the small crncibles used in those professions, but make them of any size required. In such crucibles the metal is usually melted under the action of heat directed and accelerated by the blast of a blow-pipe, and this strong blast, intensifying the heat as it does, has a tendency rapidly to destroy and render `entirely useless the best crucibles now to be found in the market. The object ot my invention, therefore, is to provide a Crucible which will not be injured or destroyed under those circumstances.
Figure 1 represents a crucible for dental purposes unattached. Fig. 2 represents the same in a ladle or metallic Crucible with a handle, by which to support it.
In the accompanying drawings, which form a part of this specification, A represents a crucible for dentists use, in which to melt metals employed for dental purposes. The main feature of this Crucible is in the employment of asbestus in its construction. This may be done by the use of what is known as mill-board, which is made of asbestus ber mixed with a little paper-stock. When made of this board the heat to which itis subjected in use will destroy the paper-stock, and then, if undue pressure is brought to bear upon the crucible, it
will break down unless supported in a ladle or other suitable device, as shown in Fig. 2.
I do not desire to conine myself to the use of mi`il-board, for the asbestus ber may be pressed into the required shape under proper pressure and in suitable dies, and in such case the crucible thus formed would be necessary to be sustained by being placed within a metal Crucible or ladle.
I am aware that it is not new to protect cru- Cbles with an outer coating` or shieldl of asbestus, and therefore Ido not Clai In such invention.
What I Claim as my invention is l. A Crucible composed ofasbestus ber and paper'stock mixed and molded into shape, substantially as described.
2. A crucible made in two parts, the inner one composed of asbestus fiberand paper-stock mixed and pressed into shape and the outer part made of metal for supporting the inner part, substantially as described.
MILTON H. KNAPP.
Witnesses:
C. A. S'IACY, A. L. MILLARD.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US251719A true US251719A (en) | 1882-01-03 |
Family
ID=2321018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US251719D Expired - Lifetime US251719A (en) | Crucible |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US251719A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2523777A (en) * | 1946-12-05 | 1950-09-26 | Polcar Marguerite | Egg separator |
| US2818299A (en) * | 1956-09-07 | 1957-12-31 | Mildred A Payne | Portable pavement marker |
| US20100105618A1 (en) * | 2007-02-12 | 2010-04-29 | Arjo Lysander De Boer | Non-Natural Recombinant Gelatins with Enhanced Functionality |
-
0
- US US251719D patent/US251719A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2523777A (en) * | 1946-12-05 | 1950-09-26 | Polcar Marguerite | Egg separator |
| US2818299A (en) * | 1956-09-07 | 1957-12-31 | Mildred A Payne | Portable pavement marker |
| US20100105618A1 (en) * | 2007-02-12 | 2010-04-29 | Arjo Lysander De Boer | Non-Natural Recombinant Gelatins with Enhanced Functionality |
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