DE72397C - Workpiece for razor blades - Google Patents

Workpiece for razor blades

Info

Publication number
DE72397C
DE72397C DENDAT72397D DE72397DA DE72397C DE 72397 C DE72397 C DE 72397C DE NDAT72397 D DENDAT72397 D DE NDAT72397D DE 72397D A DE72397D A DE 72397DA DE 72397 C DE72397 C DE 72397C
Authority
DE
Germany
Prior art keywords
workpiece
razor blades
blade
cross
section
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
Application number
DENDAT72397D
Other languages
German (de)
Original Assignee
friedrich ern & CO. in Weyer bei Solingen
Publication of DE72397C publication Critical patent/DE72397C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26BHAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/02Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor involving unchangeable blades
    • B26B21/04Razors of the knife type

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Nach bisher üblicher Art werden die Klingen der Rasirmesser in Gesenken oder Matrizen ausgeschlagen. Die Klinge erhält einen vom Rücken bis zur Schneidkante erst rascher, dann allmälig in gröfserem, aber stetig fortlaufendem Bogen Querschnitt, wie Fig. 1 und 2 veranschaulichen. Eine solche Rohklinge wird nun durch acht auf einander folgende Schleifoperationen nach und nach in die durch Fig. 3 dargestellte Form gebracht (die Figur ist der besseren Verständlichkeit wegen etwas abnorm gezeichnet), um schliefslich durch Beischleifen der vorhin noch vorhanden gewesenen Ecke die fertige Querschnittsgestalt (Fig. 4) zu erhalten, bei welcher also die Klinge von der Schneide aus nach dem Rücken zuerst etwas keil- oder schneideförmig sich verdickt, um dann in sanftem Bogen sich wieder zu verjüngen und nun von da aus in rasch ansteigendem Bogen den starken Rücken zu bilden. Um zu diesem Schlufsresultat zu gelangen, auf welches noch das Poliren erfolgt, ist zehnmaliges Schleifen erforderlich.In the usual way, the blades of the razor knife are in dies or dies knocked out. The blade takes you from the back to the cutting edge first more quickly, then gradually in a larger, but steadily continuous arc cross-section, as shown in FIGS. 1 and 2. Such a raw blade is now made by eight successive grinding operations gradually brought into the form shown by Fig. 3 (the figure is somewhat abnormal for better understanding drawn), finally by sanding the corner that was still there before to obtain the finished cross-sectional shape (Fig. 4), in which the blade of the First cut out a little wedge-shaped or knife-shaped thickened around the back then to narrow again in a gentle curve and now from there in a rapidly increasing curve Arch to form the strong back. To get to this final result, click on before the polishing is done, grinding is required ten times.

Um diese Schleifarbeit auf ein thunlichstes Minimum zu reduciren, wird beim Schlagen der Klingen derselben eine von der bisherigen Form abweichende, durch die Fig. 5 und 6 dargestellte Form gegeben. Hier wird die Versenkung vom Rücken aus so gebildet, dafs an der Schneidseite eine bestimmte Brüstung oder ein vertiefter Rand sich befindet und dafs die Begrenzungslinie der Klingenfläche eine Linie von wechselnder Krümmungsrichtung ist, wellenförmig verlaufend, vom Rücken aus erst, wie beim alten Verfahren, in stark fallender Krümmung in einen sanften Bogen übergehend, dann aber etwa in der Mitte bis 3/5 der Breite, vom Rücken aus gemessen, wieder ganz sanft ansteigend und nach der Schneidkante noch einmal, fast unmerklich keilförmig verlaufend. Diese Klinge ist im Querschnitt schon im Rohen dem Querschnitt des fertigen Messers ähnlich (die Umrifslinien des vorgeschlagenen Messers bilden die Aequidistanten der fertigen Klinge). Eine so vorbereitete Klinge läfst sich sehr gut härten, erhält keine Risse und Krümmungen dabei und kann in vier Operationen fertig geschliffen werden. Schon beim dritten Schleifen erhält man die Querschnittsform, welche bei der alten Form erst beim neunten Schleifen erreicht weiden kann, und es hat jetzt ebenfalls nur noch das Dünnmachen der Wölbung von der Höhlung zur Schneide zu geschehen.In order to reduce this grinding work to a minimum as possible, when the blades are struck they are given a shape which deviates from the previous shape, as shown in FIGS. 5 and 6. Here the countersink is formed from the back in such a way that there is a certain parapet or a recessed edge on the cutting side and that the boundary line of the blade surface is a line with an alternating direction of curvature, running undulating, from the back only, as in the old method, in to significantly lower curvature in a gentle arc passing over, but then, measured approximately in the center to 3/5 of the width from the back, again gently rising and after the cutting edge again, almost imperceptible wedge-shaped running. This blade is already similar in cross-section to the cross-section of the finished knife in the rough (the contour lines of the proposed knife form the equidistants of the finished blade). A blade prepared in this way can be hardened very well, does not get any cracks or bends and can be completely ground in four operations. Already with the third sanding you get the cross-sectional shape, which with the old shape can only be reached with the ninth sanding, and now you just have to thin the bulge from the cavity to the cutting edge.

Claims (1)

Patent-Anspruch:Patent claim: Für Rasirmesser das später durch Schleifen fertig zu stellende Werkstück mit einem solchen Querschnitt, dafs vom Rücken aus hinter der sanften Hohlkehle vor der eigentlichen Schärfe eine ansteigende Verstärkung der Rohklinge sich ergiebt, wie in Fig. 5 dargestellt ist.For razor knives, the workpiece to be finished later by grinding with such a tool Cross-section, seen from the back, behind the gentle groove in front of the actual one Sharpness an increasing gain of the raw blade results, as shown in FIG. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DENDAT72397D Workpiece for razor blades Expired - Lifetime DE72397C (en)

Publications (1)

Publication Number Publication Date
DE72397C true DE72397C (en)

Family

ID=345623

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT72397D Expired - Lifetime DE72397C (en) Workpiece for razor blades

Country Status (1)

Country Link
DE (1) DE72397C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT396954B (en) * 1991-11-18 1994-01-25 Haboeck Herwig INSULATION PLATE FOR DRIVING INTO THE WALL AND METHOD AND DEVICE FOR THEIR PRODUCTION

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT396954B (en) * 1991-11-18 1994-01-25 Haboeck Herwig INSULATION PLATE FOR DRIVING INTO THE WALL AND METHOD AND DEVICE FOR THEIR PRODUCTION

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