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 materialsInfo
- 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
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.
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) |
-
1924
- 1924-02-15 GB GB393224A patent/GB233448A/en not_active Expired
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