GB736777A - Improvements in pen points or nibs and the manufacture thereof - Google Patents
Improvements in pen points or nibs and the manufacture thereofInfo
- Publication number
- GB736777A GB736777A GB13344/51A GB1334451A GB736777A GB 736777 A GB736777 A GB 736777A GB 13344/51 A GB13344/51 A GB 13344/51A GB 1334451 A GB1334451 A GB 1334451A GB 736777 A GB736777 A GB 736777A
- Authority
- GB
- United Kingdom
- Prior art keywords
- titanium
- hardening
- june
- pen
- nibs
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/76—Making other particular articles writing or drawing instruments, e.g. writing pens, erasing pens
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
736,777. Treating titanium surfaces. ESTERBROOK PEN CO. June 5, 1951 [June 9, 1950], No. 13344/51. Classes 72 and 82 (2). [Also in Groups XV and XXII] Pen nibs, composed wholly of titanium, are hardened, preferably at a temperature of approximately 1350‹ C., in an atmosphere containing gases which include a hardening agent such as oxygen, hydrogen, nitrogen and/or carbon so as to form a coating of nitride, hydride, oxide, or carbide of titanium. Intense heat may be supplied by a flame, by electrical resistance transmitted by conduction or radiation or high-frequency induction heating, the time of heat application being between two and thirty seconds. The hardening produced is a surface hardening diminishing rapidly toward the centre of the nib body. The nib may be inserted between metal rolls 11 and 12, Fig. 18, during heating and supported by clampng members 13a on a conveyer, the metal rolls serving as a heat conducting shield.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US736777XA | 1950-06-09 | 1950-06-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB736777A true GB736777A (en) | 1955-09-14 |
Family
ID=22115114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13344/51A Expired GB736777A (en) | 1950-06-09 | 1951-06-05 | Improvements in pen points or nibs and the manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB736777A (en) |
-
1951
- 1951-06-05 GB GB13344/51A patent/GB736777A/en not_active Expired
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