GB474511A - Improvements in or relating to electrically-operated hand hammers - Google Patents

Improvements in or relating to electrically-operated hand hammers

Info

Publication number
GB474511A
GB474511A GB6265/37A GB626537A GB474511A GB 474511 A GB474511 A GB 474511A GB 6265/37 A GB6265/37 A GB 6265/37A GB 626537 A GB626537 A GB 626537A GB 474511 A GB474511 A GB 474511A
Authority
GB
United Kingdom
Prior art keywords
electrically
drill
march
rotated
shaft
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
GB6265/37A
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.)
Robert Bosch AG
Robert Bosch GmbH
Original Assignee
Robert Bosch AG
Robert Bosch GmbH
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 Robert Bosch AG, Robert Bosch GmbH filed Critical Robert Bosch AG
Publication of GB474511A publication Critical patent/GB474511A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B11/00—Other drilling tools
    • E21B11/005—Hand operated drilling tools
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Drilling And Boring (AREA)

Abstract

474,511. Percussive drills. BOSCH AKT.-GES., R. March 3, 1937, No. 6265. Convention date, March 3, 1936. [Class 124] An electrically - operated percussive tool has a detachable front portion 3 in which is mounted a shaft 10 carrying the tool steel 7 on its outer end. A bevel wheel 14, axially displaceable on the shaft 11 gears with a wheel 16 rotated by a crank handle 9, allows the drill to be rotated by hand in addition to the rotation of the normal drill twist mechanism. A nozzle 4 to which an air blower is connected, allows blowing air to enter the drill steel bore. The drift hole 13 is closed by a rubber band 22.
GB6265/37A 1936-03-03 1937-03-03 Improvements in or relating to electrically-operated hand hammers Expired GB474511A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE474511X 1936-03-03

Publications (1)

Publication Number Publication Date
GB474511A true GB474511A (en) 1937-11-02

Family

ID=6541729

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6265/37A Expired GB474511A (en) 1936-03-03 1937-03-03 Improvements in or relating to electrically-operated hand hammers

Country Status (1)

Country Link
GB (1) GB474511A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189423A (en) * 1986-03-18 1987-10-28 Dowty Mining Equipment Ltd Rock drill assemblies

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189423A (en) * 1986-03-18 1987-10-28 Dowty Mining Equipment Ltd Rock drill assemblies

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