GB223065A - Improvements in and relating to electric engravers - Google Patents
Improvements in and relating to electric engraversInfo
- Publication number
- GB223065A GB223065A GB2830223A GB2830223A GB223065A GB 223065 A GB223065 A GB 223065A GB 2830223 A GB2830223 A GB 2830223A GB 2830223 A GB2830223 A GB 2830223A GB 223065 A GB223065 A GB 223065A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rod
- electric
- copper
- holder
- ring
- 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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
- B23H9/06—Marking or engraving
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
Abstract
223,065. British Thomson-Houston Co., Ltd., (General Electric Co.), Nov. 9, 1923. Electric and like pens and pencils.-In an electric engraving pen or pencil of the type comprising a marking-member of low resistance included in an electric circuit with the article to be engraved, the marking-member consists of a pointed rod 18 made wholly of a heat refractory material having a low specific resistance such as molybdenum or tungsten. A heat-protecting shield for the operator's hand may be provided, and the device may be air or water cooled. Fig. 1 shows the rod 18 fixed in a copper tube 14 provided with heat radiating discs 15, a copper conducting rod also fixed in the tube 4 being secured to a holder 11 by means of a ring 13 and ferrule 13<1>. The holder 11 and ring 13 are of insulating material; incidentally, the ring 13 forms a shield for the operator's hand. The copper rod is connected by a lead 20 to one low voltage terminal of a transformer 21, the other being connected to a plate 23 laid under the article 24 to be engraved. Fig. 3 shows a modification having copper inlet and outlet pipes 27, 28 for a cooling- liquid, these pipes being connected to the lead 20 and acting as conductors. The rod 18 is fixed in a cooling-chamber 25 secured to the holder 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2830223A GB223065A (en) | 1923-11-09 | 1923-11-09 | Improvements in and relating to electric engravers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2830223A GB223065A (en) | 1923-11-09 | 1923-11-09 | Improvements in and relating to electric engravers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB223065A true GB223065A (en) | 1924-10-16 |
Family
ID=10273477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2830223A Expired GB223065A (en) | 1923-11-09 | 1923-11-09 | Improvements in and relating to electric engravers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB223065A (en) |
-
1923
- 1923-11-09 GB GB2830223A patent/GB223065A/en not_active Expired
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