GB397147A - Improvements in the manufacture of keys for locks - Google Patents
Improvements in the manufacture of keys for locksInfo
- Publication number
- GB397147A GB397147A GB481032A GB481032A GB397147A GB 397147 A GB397147 A GB 397147A GB 481032 A GB481032 A GB 481032A GB 481032 A GB481032 A GB 481032A GB 397147 A GB397147 A GB 397147A
- Authority
- GB
- United Kingdom
- Prior art keywords
- punch
- strip
- punches
- bit
- keys
- 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
- B21D53/38—Making other particular articles locksmith's goods, e.g. handles
- B21D53/42—Making other particular articles locksmith's goods, e.g. handles keys
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
397,147. Making keys. HARRISON & SONS, Ltd., H. and HARRISON, F. H., Villiers Street, Willenhall, Staffordshire. Feb. 18, 1932, No. 4810. [Classes 83 (ii) and 83 (iv).] Punching; shear blades.-Keys are made from metal strip H having a rib h on each face near the mid line of the strip, by feeding the strip continuouslv to a machine having a pair of blanking tools which blank out a substantially complete key including the steps in the key bit at each operation. The upper tool carries punches b, c and replaceable punches a<5>, a<2>, g<1> and the die has three sinkings. On the downstroke of the head the punch c forms the hole t<1> and the punch b forms a notch g which co-operates with a pivoted detent D for positioning the strips for the blanking operation. The front end of the strip engages a projection d<1> and moves the detent to engage the notch g and arrest the bit under the punches a<5>, a<2>, g<1>. The punch g<1> is built up of plates. On the next downward stroke the punch a<5> blanks out the handle, the punch a<2> the shank and the punch g<1> the bit. The key is forced through the lower die and the waste remains in strip form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB481032A GB397147A (en) | 1932-02-18 | 1932-02-18 | Improvements in the manufacture of keys for locks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB481032A GB397147A (en) | 1932-02-18 | 1932-02-18 | Improvements in the manufacture of keys for locks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB397147A true GB397147A (en) | 1933-08-18 |
Family
ID=9784235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB481032A Expired GB397147A (en) | 1932-02-18 | 1932-02-18 | Improvements in the manufacture of keys for locks |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB397147A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4179789A (en) * | 1976-03-01 | 1979-12-25 | Neiman S.A. | Process for producing a piston-type safety lock device |
-
1932
- 1932-02-18 GB GB481032A patent/GB397147A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4179789A (en) * | 1976-03-01 | 1979-12-25 | Neiman S.A. | Process for producing a piston-type safety lock device |
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