GB233448A - Rotary or percussive bit for use in drilling stone and like materials - Google Patents

Rotary or percussive bit for use in drilling stone and like materials

Info

Publication number
GB233448A
GB233448A GB393224A GB393224A GB233448A GB 233448 A GB233448 A GB 233448A GB 393224 A GB393224 A GB 393224A GB 393224 A GB393224 A GB 393224A GB 233448 A GB233448 A GB 233448A
Authority
GB
United Kingdom
Prior art keywords
rotary
materials
stone
shank
drilling stone
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
GB393224A
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
Priority to GB393224A priority Critical patent/GB233448A/en
Publication of GB233448A publication Critical patent/GB233448A/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
    • B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
    • B28D1/146—Tools therefor

Landscapes

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

Abstract

233,448. Lazenby, T. Feb. 15, 1924. Drills.-A drill for stone &c. has the end of the shank twisted and formed with three cutting- points, each having a width of one-third of the diameter of the shank. The shank may be of octagonal &c. cross section. The drill may be rotated or may be percussively driven. Reference has been directed by the Comptroller to Specifications 178,621 and 225,314.
GB393224A 1924-02-15 1924-02-15 Rotary or percussive bit for use in drilling stone and like materials Expired GB233448A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB393224A GB233448A (en) 1924-02-15 1924-02-15 Rotary or percussive bit for use in drilling stone and like materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB393224A GB233448A (en) 1924-02-15 1924-02-15 Rotary or percussive bit for use in drilling stone and like materials

Publications (1)

Publication Number Publication Date
GB233448A true GB233448A (en) 1925-05-14

Family

ID=9767589

Family Applications (1)

Application Number Title Priority Date Filing Date
GB393224A Expired GB233448A (en) 1924-02-15 1924-02-15 Rotary or percussive bit for use in drilling stone and like materials

Country Status (1)

Country Link
GB (1) GB233448A (en)

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