AT27181B - Extension drill for core extraction. - Google Patents

Extension drill for core extraction.

Info

Publication number
AT27181B
AT27181B AT27181DA AT27181B AT 27181 B AT27181 B AT 27181B AT 27181D A AT27181D A AT 27181DA AT 27181 B AT27181 B AT 27181B
Authority
AT
Austria
Prior art keywords
drill
core
core extraction
extension drill
parts
Prior art date
Application number
Other languages
German (de)
Inventor
Michael Boof
Original Assignee
Michael Boof
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE1905169319D external-priority patent/DE169319C/de
Application filed by Michael Boof filed Critical Michael Boof
Application granted granted Critical
Publication of AT27181B publication Critical patent/AT27181B/en

Links

Landscapes

  • Earth Drilling (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Erweiterungsbohrer für Kerngewinnung. 
 EMI1.1 
 ein Abbrechen des Kernes mit dem Bohrer selbst deshalb nicht   möglich,   weil die verschiebbaren Teile der Bohrkrone nicht mit genügender Kraft an den Kern gepresst werden. 
 EMI1.2 
 Diamanten immer nur in achsialer Richtung wirken. 



   Durch den Bohrer gemäss der Erfindung soll nun sowohl ein Abschneiden wie ein   Hochholcn   des erbohrten Kernes ermöglicht werden. Zu diesem Zwecke sind die Teile der 
 EMI1.3 
 davon Teile beim Anheben des Bohrers an den erhobenen Kern anpressen und dip Diamanten werden bei der   weiteren Drehung des Bohrers den Kern zum grossen Teil   durchschneiden, so dass dieser leicht abgerissen und, von umgeklappten Teilen der Bohr- 
 EMI1.4 
   unù Fig. : 1 eincn Schnitt   nach   der Linie C-D   der Fig. 1, während in Fig. A die Stellung   der Teile   der Bohrkrone   beim     Hochziehen   des Bohrers dargestellt ist. 



   Die Bohrkrone besteht aus zwei halbkreisförmigen Bögen a, welche mit dem Bohrrohr   b   durch Zapfen c drehbar   verbunden   sind. In   den Bögen     sind Segmente    befestigt, an   welchen die Bohrdiamanten e so angeordnet sind, dass während des   Bohrbctriebes die   äussersten Diamanten über den Umfang der Verrohrung f hinausreichen. während die 
 EMI1.5 
 einerseits die Verrohrung f leicht nachgeschoben werden kann, andererseits der Kern g bequem im Innern des Bohrrohres Platz hat. Beim Einlassen der Bohrvorrichtung in das   Bohrloch     haben die beiden Bögen   die in Fig. 4 dargestellte Lage.

   Beim Auftreffen auf 
 EMI1.6 
 die   Lage gemäss Fig. 4   erreicht, so kann der Kern leicht abgebrochen und zutage befördert werden, wobei er auf den Segmenten d ruht. 
 EMI1.7 




   <Desc / Clms Page number 1>
 



  Extension drill for core extraction.
 EMI1.1
 breaking off the core with the drill itself is not possible because the movable parts of the drill bit are not pressed against the core with sufficient force.
 EMI1.2
 Diamonds only work in an axial direction.



   The drill according to the invention is now intended to enable both cutting and lifting of the drilled core. For this purpose the parts of the
 EMI1.3
 Press parts of it against the raised core when lifting the drill and dip diamonds will cut through the core for the most part as the drill continues to rotate, so that it is easily torn off and, from folded parts of the drilling
 EMI1.4
   Fig. 1 shows a section along the line C-D of Fig. 1, while Fig. A shows the position of the parts of the drill bit when pulling up the drill.



   The drill bit consists of two semicircular arcs a, which are rotatably connected to the drill pipe b by pins c. Segments are attached to the arches, on which the drilling diamonds e are arranged in such a way that the outermost diamonds extend beyond the circumference of the casing f during the drilling operation. while the
 EMI1.5
 on the one hand, the casing f can easily be pushed in, on the other hand, the core g conveniently has space inside the drill pipe. When the drilling device is let into the borehole, the two arcs are in the position shown in FIG.

   When hitting
 EMI1.6
 When the position according to FIG. 4 is reached, the core can easily be broken off and brought to light, whereby it rests on the segments d.
 EMI1.7


 

Claims (1)

EMI2.1 EMI2.2 EMI2.3 EMI2.1 EMI2.2 EMI2.3
AT27181D 1905-03-20 1906-04-30 Extension drill for core extraction. AT27181B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1905169319D DE169319C (en) 1905-03-20

Publications (1)

Publication Number Publication Date
AT27181B true AT27181B (en) 1907-01-25

Family

ID=5687730

Family Applications (1)

Application Number Title Priority Date Filing Date
AT27181D AT27181B (en) 1905-03-20 1906-04-30 Extension drill for core extraction.

Country Status (1)

Country Link
AT (1) AT27181B (en)

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