GB658432A - Improvements relating to centre punches - Google Patents
Improvements relating to centre punchesInfo
- Publication number
- GB658432A GB658432A GB1074749A GB1074749A GB658432A GB 658432 A GB658432 A GB 658432A GB 1074749 A GB1074749 A GB 1074749A GB 1074749 A GB1074749 A GB 1074749A GB 658432 A GB658432 A GB 658432A
- Authority
- GB
- United Kingdom
- Prior art keywords
- guide
- tool
- centre
- holder
- limited
- 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
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D5/00—Centre punches
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Assembly (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
658,432. Centre punches. FLEMING, P. S. H. April 22, 1949, No. 10747. [A Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 23, 1950.] [Class 61(ii)] In a centre punch for transferring the centre of holes in one plate to the centre of holes in another, the pointed end of the punch is slidably retracted into the conical end of the guide by a coil spring and the guide is retracted into a holder having a flat end face which may bE provided with feet, by another coil spring interposed between the guide and the holder. The punching tool 1 is urged into inoperative position by a spring 10 having ends which abut against shoulders, one in the upper end of the box in the guide 4 and the other on the head of the tool 2. The upward movement of the tool in the guide is limited by a transverse pin 8 which engages shoulders in the lower end of the box. The guide 4 is urged downwardly over the pointed end 3 of the tool by springs 15 housed in recesses between the holder 11 and the guide, downward movement being limited by a nut 12 on the upper end of the guide. In a modification the spring 10 is interposed between a shoulder at the lower end of the bore in the guide 4, and a fixed pin or collar on the tool, upward movement of the pin being limited by a cup nut or collar on the upper end of the guide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1074749A GB658432A (en) | 1949-04-22 | 1949-04-22 | Improvements relating to centre punches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1074749A GB658432A (en) | 1949-04-22 | 1949-04-22 | Improvements relating to centre punches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB658432A true GB658432A (en) | 1951-10-10 |
Family
ID=9973539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1074749A Expired GB658432A (en) | 1949-04-22 | 1949-04-22 | Improvements relating to centre punches |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB658432A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3045593A (en) * | 1960-11-21 | 1962-07-24 | United Aircraft Corp | Ballot marker |
| US3339279A (en) * | 1964-07-17 | 1967-09-05 | Robert H Sovar | Hollow engraving point and holder for engraving coated transparent sheets |
| GB2269334A (en) * | 1992-08-07 | 1994-02-09 | John Paul Rule | Screw, bolt, nail and stud extractor |
-
1949
- 1949-04-22 GB GB1074749A patent/GB658432A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3045593A (en) * | 1960-11-21 | 1962-07-24 | United Aircraft Corp | Ballot marker |
| US3339279A (en) * | 1964-07-17 | 1967-09-05 | Robert H Sovar | Hollow engraving point and holder for engraving coated transparent sheets |
| GB2269334A (en) * | 1992-08-07 | 1994-02-09 | John Paul Rule | Screw, bolt, nail and stud extractor |
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