GB247983A - Improvements relating to percussive drills - Google Patents

Improvements relating to percussive drills

Info

Publication number
GB247983A
GB247983A GB4825/26A GB482526A GB247983A GB 247983 A GB247983 A GB 247983A GB 4825/26 A GB4825/26 A GB 4825/26A GB 482526 A GB482526 A GB 482526A GB 247983 A GB247983 A GB 247983A
Authority
GB
United Kingdom
Prior art keywords
drill
percussive drills
improvements relating
percussive
drills
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
GB4825/26A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB247983A publication Critical patent/GB247983A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/26—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by impact tools, e.g. by chisels or other tools having a cutting edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D3/00—Hand chisels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2222/00—Materials of the tool or the workpiece
    • B25D2222/72—Stone, rock or concrete
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/305—Twisted part of a chisel or percussive non-drilling tool bit

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Drilling Tools (AREA)

Abstract

247,983. Lissau, M., (Assignee of Sauer, C.). Feb. 20, 1925, [Convention date]. Percussive drills.-In a drill for working in stone, brick, rock or the like, of the kind having at least three helical grooves b, the solid end is recessed in advance of the forward end of each groove so as to provide a small leading point o, whilst the inclined forward ends of the ribs are stepped, and the cutting edge of each step is ground to a symmetrical ridge shape. A bar f serves to turn the drill in operation.
GB4825/26A 1925-02-20 1926-02-19 Improvements relating to percussive drills Expired GB247983A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE247983X 1925-02-20

Publications (1)

Publication Number Publication Date
GB247983A true GB247983A (en) 1926-09-23

Family

ID=5935491

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4825/26A Expired GB247983A (en) 1925-02-20 1926-02-19 Improvements relating to percussive drills

Country Status (1)

Country Link
GB (1) GB247983A (en)

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