AT65852B - Extension roller drill. - Google Patents

Extension roller drill.

Info

Publication number
AT65852B
AT65852B AT65852DA AT65852B AT 65852 B AT65852 B AT 65852B AT 65852D A AT65852D A AT 65852DA AT 65852 B AT65852 B AT 65852B
Authority
AT
Austria
Prior art keywords
extension roller
roller drill
drill
rollers
hand
Prior art date
Application number
Other languages
German (de)
Inventor
Howard Robard Hughes
Original Assignee
Howard Robard Hughes
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
Application filed by Howard Robard Hughes filed Critical Howard Robard Hughes
Application granted granted Critical
Publication of AT65852B publication Critical patent/AT65852B/en

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  • Drilling Tools (AREA)

Description

  

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 welche während ihrer Drehung nicht in dieselben Nuten einfallen können. An der inneren Endfläche oder Basis der Rollen sind auch Meisselzähne 13 angeordnet, welche das Material an den Seiten des Loches y abscheren und dadurch einen hinreichenden Spielraum für den   Meisselkopf   bilden, damit das gepulverte oder zerkleinerte Material durch das eingeführte Spülwasser durch das Bohrloch an die Oberfläche gehoben werden könne.

   Dieses Spülwasser wird durch den rohr-   förmigen   Arbeitsteil B zugeleitet, mit welchem der Kopf A verbunden ist ; selbstverständlich 
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 mit wegnehmbaren, kegelförmigen Teilen 14 versehen, auf welche die Rollen   (..'drehbar uufgenftzt   sind ; jede Rolle hat einen   we   nehmbaren Ring   li,   der in das Bodenende derselben eingeschraubt ist, um mit einer Schulter   14a des wegnehmbaren Teiles   der Spindel zusammenzuarbeiten, um eine 
 EMI2.3 
 geordnet, dass der Zulauf des Schmiermittels zu'den Rollen   selbsttätig abgeschnitten wird,   sobald die Glieder D einander genähert sind oder in   unwirksamer   Lage sich befinden, wie in Fig. 2 dargestellt.

     Wünscht man   das Loch   y'zu   erweitern, welches eine Fortsetzung des weiteren Loches y, 
 EMI2.4 
   bohrer der beschriebenen Bauart enthält   nur sehr wenige Teile, welche alle stark genug hergestellt   werden     können,   um den Beanspruchungen zu widerstehen, denen sie unterworfen sind, wenn der Bohrer zum Ausbohren kleiner Löcher benutzt wird; im Hinblick darauf, dass die Spindeln, an welchen die Schneiderollen montiert sind, durch die Rollen vollkommen umschlossen sind, 
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 which cannot fall into the same grooves during their rotation. Chisel teeth 13 are also arranged on the inner end face or base of the rollers, which shear off the material on the sides of the hole y and thereby provide sufficient clearance for the chisel head so that the powdered or comminuted material through the flushing water introduced through the borehole to the surface can be lifted.

   This rinsing water is fed through the tubular working part B to which the head A is connected; Of course
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 provided with removable cone-shaped parts 14 on which the rollers (... 'are rotatable; each roller has a removable ring li screwed into the bottom end thereof to cooperate with a shoulder 14a of the removable part of the spindle for a
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 arranged so that the supply of lubricant to the rollers is automatically cut off as soon as the links D are close to one another or are in an inoperative position, as shown in FIG.

     If one wishes to widen the hole y ', which is a continuation of the further hole y,
 EMI2.4
   drill of the type described contains very few parts, all of which can be made strong enough to withstand the stresses to which they are subjected when the drill is used to drill small holes; with a view to the fact that the spindles on which the cutting rollers are mounted are completely enclosed by the rollers,
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Claims (1)

PATENT-ANSPRUCH : Erweiterungsrollendrehbohrer, dadruch gekennzeichnet, dass die die Schneidrollen tragenden, federbeeinflussten Backen (D) einerseits mittlere Führungsleisten (d) besitzen, welche in einer Führungsnut des Bohrkopfes (A) verschiebbar sind, und andererseits mit Gleitflächen (8) aU8- EMI2.6 PATENT CLAIM: Extension roller rotary drills, characterized by the fact that the spring-influenced jaws (D) carrying the cutting rollers have, on the one hand, central guide strips (d) which can be moved in a guide groove in the drill head (A), and, on the other hand, with sliding surfaces (8) aU8- EMI2.6
AT65852D 1912-12-04 1912-12-04 Extension roller drill. AT65852B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT65852T 1912-12-04

Publications (1)

Publication Number Publication Date
AT65852B true AT65852B (en) 1914-07-25

Family

ID=3587774

Family Applications (1)

Application Number Title Priority Date Filing Date
AT65852D AT65852B (en) 1912-12-04 1912-12-04 Extension roller drill.

Country Status (1)

Country Link
AT (1) AT65852B (en)

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