GB1355552A - Method of producing a blank of a borer - Google Patents
Method of producing a blank of a borerInfo
- Publication number
- GB1355552A GB1355552A GB2772671A GB2772671A GB1355552A GB 1355552 A GB1355552 A GB 1355552A GB 2772671 A GB2772671 A GB 2772671A GB 2772671 A GB2772671 A GB 2772671A GB 1355552 A GB1355552 A GB 1355552A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wires
- june
- guides
- borer
- axially
- 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
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
- B23P15/32—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools twist-drills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wire Processing (AREA)
Abstract
1355552 Making cover blanks: twisting E LARSSON 14 June 1971 [12 June 1970] 27726/71 Headings B3A and B3E A helical borer is made by guiding a pair of steel wires 21, 22 towards a common position where they are gripped by a rotating and axially movable fixture 33 and twisted together. The wires are pulled through inclined guide channels 30 in guides 29 and then supported by jaws 35 with guide grooves 36. A central core 20 may be fed axially within the wires. The wires are subsequently unwound from each other and are ground externally to form a cutting edge (53), Fig. 3 (not shown): a gimlet end (55) may be fitted. In another embodiment, Fig. 2 (not shown), a single steel wire (41) is wound around a pre-formed helically wire fed axially through the centre of the guides 29.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE822170 | 1970-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1355552A true GB1355552A (en) | 1974-06-05 |
Family
ID=20273476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2772671A Expired GB1355552A (en) | 1970-06-12 | 1971-06-14 | Method of producing a blank of a borer |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR2095228B1 (en) |
| GB (1) | GB1355552A (en) |
| OA (1) | OA04248A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3222908A (en) * | 1961-11-03 | 1965-12-14 | Filbert A Molella | Method of and apparatus for fabricating metallic strips |
-
1971
- 1971-06-14 FR FR7121526A patent/FR2095228B1/fr not_active Expired
- 1971-06-14 GB GB2772671A patent/GB1355552A/en not_active Expired
-
1972
- 1972-01-12 OA OA54462A patent/OA04248A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2095228B1 (en) | 1976-03-19 |
| OA04248A (en) | 1979-12-31 |
| FR2095228A1 (en) | 1972-02-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |