DE74241C - Screws, rivets or bolts made of wrought iron with steel wedges driven into the ends - Google Patents
Screws, rivets or bolts made of wrought iron with steel wedges driven into the endsInfo
- Publication number
- DE74241C DE74241C DENDAT74241D DE74241DA DE74241C DE 74241 C DE74241 C DE 74241C DE NDAT74241 D DENDAT74241 D DE NDAT74241D DE 74241D A DE74241D A DE 74241DA DE 74241 C DE74241 C DE 74241C
- Authority
- DE
- Germany
- Prior art keywords
- rivets
- screws
- iron
- steel
- steel wedges
- 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 - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 title claims description 14
- 239000010959 steel Substances 0.000 title claims description 14
- 229910000754 Wrought iron Inorganic materials 0.000 title 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 title 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 23
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 claims description 3
- 210000001699 lower leg Anatomy 0.000 claims 1
- 238000003754 machining Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 210000001847 Jaw Anatomy 0.000 description 2
- 210000003462 Veins Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/44—Making machine elements bolts, studs, or the like
- B21K1/46—Making machine elements bolts, studs, or the like with heads
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Gegen Anbohren sichere Niete, Schrauben oder dergleichen werden nach dem bekannten Verfahren aus Eisenstäben hergestellt, die von einem Ende zum anderen durchgehende Schichten oder Adern aus Stahl besitzen, im übrigen aber aus Eisen bestehen. Wenn nach Fertigstellung der betreffenden Gegenstände eine Härtung derselben durch Erhitzen und darauf folgendes Ablöschen in Wasser stattfindet, so nehmen nur die durchgehenden Schichten oder Adern aus Stahl Härte an, die Eisentheile dagegen bleiben weich. Niet-, Schrauben- oder Bolzenköpfe oder Enden sind gegen Angriffe eines Bohrers sicher, denn an den harten Stellen der Niete oder Schrauben bricht der Bohrer aus. Derartige Niete oder Schrauben erforderten bisher besonderes Material aus zusammengeschweifstem Eisen und Stahl, das für den gewöhnlichen Zweck der Herstellung lediglich von Sicherheitsköpfen zu kostspielig ist.Secure against drilling rivets, screws or the like are according to the known Process made from iron bars that are continuous from one end to the other Have layers or veins made of steel, but otherwise consist of iron. If after Completion of the objects concerned a hardening of the same by heating and subsequent quenching in water takes place, only take the continuous Layers or veins of steel show hardness, the iron parts, on the other hand, remain soft. Rivet-, Screw or bolt heads or ends are safe against attacks by a drill, because on the drill breaks out of the hard parts of the rivet or screw. Such rivets or Up to now, screws have required special materials made of twisted iron and Steel that is used for the ordinary purpose of manufacturing only safety heads is costly.
Dieser Uebelstand wird nach vorliegender Erfindung dadurch beseitigt, dafs man die Enden eines Eisenschaftes oder, falls gewünscht, beide Enden ein oder mehrere Male aufspaltet, in den Spalt (oder die Spalte) Keile aus Stahl eintreibt, die Spalte dann zusammendrückt und das Eisen mit den Stahlkeilen zusammenschweifst. Aus den zusammengeschweifsten Eisen- und Stahlschichten werden dann die Köpfe der Niete oder Schrauben gebildet und diese dann in der bekannten Weise gehärtet,, der übrige Schafttheil aber bleibt gleichmäfsig weich, so dafs man beim Gewindeanschneiden beispielsweise nicht der Gefahr ausgesetzt ist, auf abwechselnde weiche und harte Stellen zu stofsen und Ausbrechen der Schneidbacken zu veranlassen.According to the present invention, this disadvantage is eliminated by the Ends of an iron shaft or, if desired, both ends one or more times splits, drives steel wedges into the gap (or gap), then compresses the gap and twist the iron with the steel wedges. From the curled up Layers of iron and steel are then formed into the heads of the rivets or screws and this then hardened in the known manner, but the rest of the shaft remains uniformly soft, so that there is no danger when tapping threads, for example is exposed to bumping into alternating soft and hard areas and breaking out of the cutting jaws.
Fig. ι und 2 der Zeichnung zeigen Schaffenden aus Eisen, die einmal (Fig. 1) oder mehrere Male (Fig. 2) aufgespalten sind. In den Spalt (oder die Spalte) werden Keile e aus Stahl, am besten aus besonders präparirtem Geldschrankstahl, eingetrieben. Dann werden die Spalte zusammengedrückt und das Eisen a mit den Stahlkeilen e zusammengeschweifst. Die Schäfte sind dann zur Bildung der betreffenden Köpfe oder Enden (Niet- oder Schraubenköpfe oder -Enden) fertig. Nach Bildung dieser aus zusammengeschweifsten Eisen- und Stahlschichten bestehenden Köpfe oder Enden werden letztere gehärtet, wodurch sie die gewünschte Eigenschaft erlangen.Fig. Ι and 2 of the drawing show workers made of iron, which are split once (Fig. 1) or several times (Fig. 2). Wedges e made of steel, preferably made of specially prepared safe steel, are driven into the gap (or gap). Then the gaps are pressed together and the iron a is twisted together with the steel wedges e. The shafts are then ready to form the relevant heads or ends (rivet or screw heads or ends). After the formation of these heads or ends consisting of layers of iron and steel twisted together, the latter are hardened, whereby they acquire the desired property.
Da die Stahlkeile e aus Abfallstahl hergestellt werden können, so leuchtet ein, dafs dem bekannten Verfahren gegenüber ein wesentlicher Vortheil und der angestrebte Zweck in vollkommener Weise erreicht wird.Since the steel wedges e can be made from scrap steel, it is evident that the known Process compared to an essential advantage and the intended purpose in full Way is achieved.
Beim Gewindeanschneiden ist man gegen Ausbrechen der Schneidbacken möglichst gesichert, denn da der Schaft an der betreffenden Stelle durchweg lediglich aus Eisen besteht, so können härtefähige Schichten nicht nach aufsen gedrängt werden, wie es beim Auswalzen des gewöhnlichen Materials immer zu befürchten ist.When tapping threads, you are protected as much as possible against breaking out of the cutting jaws, because since the shaft consists entirely of iron at the point in question, so hardenable layers cannot be forced outwards, as is the case when rolling out the ordinary material is always to be feared.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
DE74241C true DE74241C (en) |
Family
ID=347303
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT74241D Expired - Lifetime DE74241C (en) | Screws, rivets or bolts made of wrought iron with steel wedges driven into the ends |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE74241C (en) |
-
0
- DE DENDAT74241D patent/DE74241C/en not_active Expired - Lifetime
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