US814A - Art of increasing the strength of wrought iron and steel and of - Google Patents
Art of increasing the strength of wrought iron and steel and of Download PDFInfo
- Publication number
- US814A US814A US814DA US814A US 814 A US814 A US 814A US 814D A US814D A US 814DA US 814 A US814 A US 814A
- Authority
- US
- United States
- Prior art keywords
- strength
- steel
- increasing
- art
- wrought iron
- 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
- CWYNVVGOOAEACU-UHFFFAOYSA-N fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 title description 12
- 229910000831 Steel Inorganic materials 0.000 title description 8
- 229910000754 Wrought iron Inorganic materials 0.000 title description 8
- 239000010959 steel Substances 0.000 title description 8
- 238000000034 method Methods 0.000 description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 229910001296 Malleable iron Inorganic materials 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000000137 annealing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000001105 regulatory Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
Definitions
- the said process is founded on the principle that the strength of said materials is increased by means of mechanical stretching or straining, at a'high temperature. I perform said process in the following manner: I first determine in the usual way by trial and calculation, what strain might, at the ordinary temperatures of the air, and before my improvement has been applied to it,
- thermotension to the metals wrought or malleable iron and steel of whatever form, in which anincr'ease of direct cohesion may be found useful, whether the same have been manufactured by rolling, hammering, drawing, or by any WALTER a. JOHNSON.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Description
w. R. JOHNSON.
Annealing Iron and Stel.
Patentd June 30, 1838..
a n v fl an 7/LZh cases 1 WJLLWQ UN i STATES PATENT OFFICE.
WALTER R. JOHNSON, OI PHILADELPHIA, PENNSYLVANIA.
ART OF INCREASING- THE STRENGTH or WROUGHT IRON AND ST EL AND or ARTICLES FORMED or sell) MATERIALS.
Specification of Letters Patent No. 814, dated June 30, 1838; Antedated December 30, 1837.
To all whom it may concern Be it known that I, WALTER R. J onNsoN,
- of the city of Philadelphia, in the State of Pennsylvania, have invented a new and useful improvement in the manufacture of wrought or malleable iron and steel and of articles formed thereof, being the imparting to said materials of an increase of strength by means of a process which I call thermtension, and that the following is a full and exact description of the manner of carry- I ing into effect my said improvement.
The said process is founded on the principle that the strength of said materials is increased by means of mechanical stretching or straining, at a'high temperature. I perform said process in the following manner: I first determine in the usual way by trial and calculation, what strain might, at the ordinary temperatures of the air, and before my improvement has been applied to it,
. be suflicient to break the particular p1ece of myself however to the same temperature for all kinds of iron and steel but varying to a higher or lower temperature, according as the same shall be found most serviceable for the particular kind which is undergoing the process. When the proper temperature has been attained,.I apply by means of any suitable apparatus for applying and measuring mechanicalstrain, a force equal, or nearly so, to the calculated strength of the specimen or article under process, and continue to apply the same as long as the metal continues to be stretched'by it.
I contemplate the application of the improvement and process above described and herein called the process of thermotension to the metals wrought or malleable iron and steel of whatever form, in which anincr'ease of direct cohesion may be found useful, whether the same have been manufactured by rolling, hammering, drawing, or by any WALTER a. JOHNSON.
Witnesses JOHN BURNS,
THOS. FLETCHER.
temperatures communicated and regulated.
other process as I do not confine my im-
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US814A true US814A (en) | 1838-06-30 |
Family
ID=2061097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US814D Expired - Lifetime US814A (en) | Art of increasing the strength of wrought iron and steel and of |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US814A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4843858A (en) * | 1987-07-16 | 1989-07-04 | Crawford Fitting Company | Tube bending apparatus |
| US20040083391A1 (en) * | 2002-09-13 | 2004-04-29 | Sun Microsystems, Inc., A Delaware Corporation | Embedded content requests in a rights locker system for digital content access control |
| US20050184163A1 (en) * | 2004-02-24 | 2005-08-25 | Sun Microsystems, Inc., A Delaware Corporation | Method and apparatus for processing an application identifier from a smart card |
| DE202016003751U1 (en) | 2016-06-15 | 2016-08-12 | Sebastian Franke | Driverless transport system for garbage cans |
-
0
- US US814D patent/US814A/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4843858A (en) * | 1987-07-16 | 1989-07-04 | Crawford Fitting Company | Tube bending apparatus |
| US20040083391A1 (en) * | 2002-09-13 | 2004-04-29 | Sun Microsystems, Inc., A Delaware Corporation | Embedded content requests in a rights locker system for digital content access control |
| US20050184163A1 (en) * | 2004-02-24 | 2005-08-25 | Sun Microsystems, Inc., A Delaware Corporation | Method and apparatus for processing an application identifier from a smart card |
| DE202016003751U1 (en) | 2016-06-15 | 2016-08-12 | Sebastian Franke | Driverless transport system for garbage cans |
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