DE375221C - Schraem rod - Google Patents

Schraem rod

Info

Publication number
DE375221C
DE375221C DEC32117D DEC0032117D DE375221C DE 375221 C DE375221 C DE 375221C DE C32117 D DEC32117 D DE C32117D DE C0032117 D DEC0032117 D DE C0032117D DE 375221 C DE375221 C DE 375221C
Authority
DE
Germany
Prior art keywords
rod
thread
edge
schraem
picks
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
DEC32117D
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.)
MAX GERSTEIN JUN
Original Assignee
MAX GERSTEIN JUN
Publication date
Priority to DEC32117D priority Critical patent/DE375221C/en
Application granted granted Critical
Publication of DE375221C publication Critical patent/DE375221C/en
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C25/00Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
    • E21C25/06Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
    • E21C25/10Rods; Drums

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)
  • Drilling Tools (AREA)

Description

Die bisher üblichen Schrämstangen besitzen Picken, deren Schneidflächen manchmal schräg so angeordnet sind, daß sie zusammen einen Schraubengang zur Beförderung des Bohrmehles bilden.The cutting bars customary up to now have picks, their cutting surfaces sometimes are arranged obliquely so that they together form a screw thread for conveying the drill cuttings.

Nach der Erfindung werden die gewinde· förmig angeordneten Picken außer mit einer Brechkante mit einer schräg zur Achse verlaufenden Mahlkante versehen. Während dieAccording to the invention, the picks arranged in the form of a thread are except for one Provide the breaking edge with a grinding edge that runs obliquely to the axis. While the

ίο Brechkante in der Drehrichtung in der üblichen Weise wirkt, bestreicht die Mahlkante den Zwischenraum zwischen den Brechkanten und zermalt die dort befindliche Kohle. Die Seitenflächen, an deren oberem Rande sich die Mahlkanten befinden, steigen etwa senkrecht von der Stange auf.ίο Breaking edge in the direction of rotation in the usual Acts wisely, the grinding edge sweeps the space between the crushing edges and crushes the coal located there. the Side surfaces, on the upper edge of which the grinding edges are located, rise approximately vertically off the shelf.

In der Zeichnung ist eine Ausführungsform der Schrämstange teils in Ansicht und teils im Schnitt dargestellt.In the drawing, an embodiment of the cutting rod is partly in view and partly shown in section.

Aus dem Schaft α der Stange ist eine gewindegangformige Auflage b ausgearbeitet, und diese ist durch drei eingefräste Längsnuten c, d, e in einzelne Stücke zerlegt, von welchen jedes eine Picke mit vordererA thread-shaped support b is worked out from the shaft α of the rod, and this is broken down into individual pieces by three milled longitudinal grooves c, d, e , each of which has a pick with the front

»5 Schneidfläche und schraubenförmiger, seitlicher Mahlkante g· hildet. Mit dieser Stange kann lediglich durch Drehen ohne die sonst erforderliche hin und her gehende Bewegung ein Schräm erzeugt werden, da die Mahlkante g der Picken stets die Kohle, welche die vorderen Pickenschneiden stehenlassen, vollkommen beseitigen. Es genügt zu ihrem Antrieb somit beispielsweise ein einfacher Drehkolbenmotor.»5 cutting surface and helical, lateral grinding edge formed. With this rod, a bevel can be produced simply by turning it without the otherwise necessary reciprocating movement, since the grinding edge g of the pecks always completely eliminates the coal which the front pecker blades leave behind. A simple rotary piston engine, for example, is sufficient to drive them.

Claims (2)

35 Patent-Ansprüche: 35 patent claims: ι . Schrämstange mit gewindef örmig angeordneten Picken, dadurch gekennzeichnet, daß die Picken außer der Brechkante an einer etwa senkrecht zur Stangenachse aufsteigenden Seitenfläche eine schräg zur Achse verlaufende Mahlkante (g) besitzen.ι. Cutting bar with thread-like arranged picks, characterized in that the picks have, in addition to the breaking edge, a grinding edge (g) running obliquely to the axis on a side surface rising approximately perpendicular to the bar axis. 2. Schrämstange nach Anspruch 1, dadurch gekennzeichnet, daß die Picken durch einen aus dem Vollen ausgearbeiteten und durch Längsnuten (c, d, e) in Stücke unterteilten Gewindegang (b) gebildet werden.2. Cutting bar according to claim 1, characterized in that the pecks are formed by a thread (b) which is worked out from the solid and is divided into pieces by longitudinal grooves (c, d, e). Hierzu ι Blatt Zeichnungen.For this purpose ι sheet of drawings.
DEC32117D Schraem rod Expired DE375221C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC32117D DE375221C (en) Schraem rod

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC32117D DE375221C (en) Schraem rod

Publications (1)

Publication Number Publication Date
DE375221C true DE375221C (en) 1923-05-09

Family

ID=7020146

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC32117D Expired DE375221C (en) Schraem rod

Country Status (1)

Country Link
DE (1) DE375221C (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2567084A (en) * 1947-05-23 1951-09-04 Termite Drills Inc Bit
US2728558A (en) * 1952-06-26 1955-12-27 New England Carbide Tool Compa Masonry drill
US3421591A (en) * 1966-12-27 1969-01-14 Webb James E Rock drill for recovering samples
US4953642A (en) * 1989-03-20 1990-09-04 Skaggs Roger D Rock drill bit
US5366032A (en) * 1993-06-09 1994-11-22 Kay Mark A Rock bit
EP1621274A1 (en) * 2004-07-27 2006-02-01 BLACK & DECKER INC. A drill bit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2567084A (en) * 1947-05-23 1951-09-04 Termite Drills Inc Bit
US2728558A (en) * 1952-06-26 1955-12-27 New England Carbide Tool Compa Masonry drill
US3421591A (en) * 1966-12-27 1969-01-14 Webb James E Rock drill for recovering samples
US4953642A (en) * 1989-03-20 1990-09-04 Skaggs Roger D Rock drill bit
US5366032A (en) * 1993-06-09 1994-11-22 Kay Mark A Rock bit
EP1621274A1 (en) * 2004-07-27 2006-02-01 BLACK & DECKER INC. A drill bit

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