DE373362C - Schraem pen - Google Patents

Schraem pen

Info

Publication number
DE373362C
DE373362C DEM78296D DEM0078296D DE373362C DE 373362 C DE373362 C DE 373362C DE M78296 D DEM78296 D DE M78296D DE M0078296 D DEM0078296 D DE M0078296D DE 373362 C DE373362 C DE 373362C
Authority
DE
Germany
Prior art keywords
cutting
pen
pin
schraem
cutting edge
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
Application number
DEM78296D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WESTFALIA AG MASCHF
Original Assignee
WESTFALIA AG MASCHF
Publication date
Priority to DEM78296D priority Critical patent/DE373362C/en
Application granted granted Critical
Publication of DE373362C publication Critical patent/DE373362C/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18—Mining picks; Holders therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Earth Drilling (AREA)

Description

Maschinenfabrik „Westfalia" Akt-Ges. in Gelsenkirchen.Machine factory "Westfalia" Akt-Ges. In Gelsenkirchen.

Schrämstift.Cutting pen.

Zusatz zum Patent 372399. Addendum to patent 372399.

Patentiert im Deutschen Reiche vom 2. Juli 1922 ab. Längste Dauer: 8. Mai 1937.Patented in the German Empire on July 2, 1922. Longest duration: May 8, 1937.

Die Erfindung betrifft eine Verbesserung des durch Patent 372399 geschützten Schrämwerkzeuges. Gemäß der Erfindung wird der Schrämstift an seinen äußeren Enden in der Weise dachförmig angeschliffen, daß die durch die beiden Dachflächen gebildete Schneide senkrecht zur Achse des Schrämstiftes steht. Ein solcher Stift ist in der Zeichnung in Abb. ι in einer Breitansicht und in Abb. 2 in einer Queransicht dargestellt.The invention relates to an improvement of the cutting tool protected by patent 372399. According to the invention, the cutting pin is ground roof-shaped at its outer ends in such a way that the through the cutting edge formed by the two roof surfaces is perpendicular to the axis of the cutting pin. Such a pin is in the drawing in Fig. Ι in a wide view and in Fig. 2 in shown in a transverse view.

Infolge dieser Gestaltung des Schrämstiftes bildet die Schneide des in die Schrämstange eingesetzten Stiftes mit ihrer jeweiligen, bei der Drehung der Schrämstange entstehenden Bewegungsrichtung einen spitzeren Winkel als die Schneide des im Hauptpatent dargestellten Schrämstiftes. Infolgedessen wird auch der Keilwinkel, in welchem das Material beim Eindringen des keilförmig angeschärften Schrämstiftes auseinandergetrieben wird, entsprechend kleiner. Dadurch wird dieAs a result of this design of the cutting pin, the cutting edge of the cutting rod forms inserted pin with their respective, resulting from the rotation of the cutting rod Direction of movement has a more acute angle than the cutting edge of the one shown in the main patent Cutting pen. As a result, the wedge angle at which the material at Penetration of the wedge-shaped sharpened cutter is driven apart, correspondingly smaller. This will make the

Schneidwirkung vergrößert und der für das Schrämen erforderliche Arbeitsaufwand verringert. Da beim Schrämen immer nur die außenstehende Hälfte der Schneide öine Ab- 25 nutzung erfährt, so wird bei der Gestaltung des Schneidstiftes gemäß vorliegender Erfindung der weitere Vorteil gegenüber dem Hauptpatent erzielt, daß nach Stumpfwerden der außenstehenden Hälfte der Schneide der 30 Stift herausgelöst und nach Drehung um i8o° wieder eingesetzt werden kann, so daß die noch scharfe Schneidhälfte nach außen kommt. Die Lebensdauer der Stifte wird dadurch verdoppelt, und die für die Schrämstifte auf- 35 gewendeten Kosten werden erheblich herabgesetzt. Increased cutting effect and reduced the amount of work required for cutting. Since when cutting, only the outer half of the cutting edge has to be cut off uses experience, so is in the design of the cutting pin according to the present invention the further advantage over the main patent is that after the outer half of the cutting edge becomes blunt, the 30th The pin can be removed and reinserted after turning through 180 ° so that the still sharp cutting half comes out. This doubles the lifespan of the pens, and the cost of the cutting pins is significantly reduced.

Claims (1)

Patent-Anspruch:Patent claim: Schrämstift nach Patent 372399, da- 40 durch gekennzeichnet, daß seine Schneide rechtwinklig zu seiner Achse liegt.Cutting pin according to patent 372399, there- 40 characterized in that its cutting edge is perpendicular to its axis. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DEM78296D Schraem pen Expired DE373362C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM78296D DE373362C (en) Schraem pen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM78296D DE373362C (en) Schraem pen

Publications (1)

Publication Number Publication Date
DE373362C true DE373362C (en) 1923-04-11

Family

ID=7318029

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM78296D Expired DE373362C (en) Schraem pen

Country Status (1)

Country Link
DE (1) DE373362C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE832881C (en) * 1949-10-25 1952-03-03 Gewerk Eisenhuette Westfalia Coal plane

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE832881C (en) * 1949-10-25 1952-03-03 Gewerk Eisenhuette Westfalia Coal plane

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