JPS5759789A - Printing hammer - Google Patents
Printing hammerInfo
- Publication number
- JPS5759789A JPS5759789A JP13559180A JP13559180A JPS5759789A JP S5759789 A JPS5759789 A JP S5759789A JP 13559180 A JP13559180 A JP 13559180A JP 13559180 A JP13559180 A JP 13559180A JP S5759789 A JPS5759789 A JP S5759789A
- Authority
- JP
- Japan
- Prior art keywords
- hammer
- shaft
- hole
- maintenance
- alloy material
- 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.)
- Pending
Links
Landscapes
- Impact Printers (AREA)
Abstract
PURPOSE: To facilitate the maintenance and replacement of a fulcrum shaft of a printer hammer when a backlash develops between a hammer hole and the shaft by making the shaft out of a sintered alloy material with a special shape.
CONSTITUTION: A hammer 2 is supported rotatively with a hammer shaft 3 inserted through a hole thereof (numeral 7 represents a return spring). A coil 5 is energized to attract the rear of the hammer 2 at the tip 4' of the core whereby the hammer 2 is turned counter clockwise on the shaft 3 to print. In an apparatus of such a type, a portion (indicated by θ) is made in a true circle at an angle of about 80° corresponding to contact surfaces 10 and 10' between the hammer shaft 3 and the hammer hole at the printing and other portions as planes 11 and 11' at about 100°. The hammer shaft 3 made of a sintered alloy material is used as obtained with dies 13 and 13' so arranged that joints 14 and 14' thereof correspond to said plane 11 and 11'. Therefore, wear due to use is only confined to the side of the hammer shaft 3. This allows the maintenance of the equipment simply by changing the shaft 3.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13559180A JPS5759789A (en) | 1980-09-29 | 1980-09-29 | Printing hammer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13559180A JPS5759789A (en) | 1980-09-29 | 1980-09-29 | Printing hammer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5759789A true JPS5759789A (en) | 1982-04-10 |
Family
ID=15155397
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13559180A Pending JPS5759789A (en) | 1980-09-29 | 1980-09-29 | Printing hammer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5759789A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6268683A (en) * | 1985-09-21 | 1987-03-28 | Caterpillar Mitsubishi Ltd | Surface treating method for steel stock to be welded |
-
1980
- 1980-09-29 JP JP13559180A patent/JPS5759789A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6268683A (en) * | 1985-09-21 | 1987-03-28 | Caterpillar Mitsubishi Ltd | Surface treating method for steel stock to be welded |
JPH0350638B2 (en) * | 1985-09-21 | 1991-08-02 | Shin Kyatapiraa Mitsubishi Kk |
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