GB528524A - Improvements in drills for brickwork and the like - Google Patents

Improvements in drills for brickwork and the like

Info

Publication number
GB528524A
GB528524A GB1344239A GB1344239A GB528524A GB 528524 A GB528524 A GB 528524A GB 1344239 A GB1344239 A GB 1344239A GB 1344239 A GB1344239 A GB 1344239A GB 528524 A GB528524 A GB 528524A
Authority
GB
United Kingdom
Prior art keywords
tool
concaved
boring
brickwork
channel
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
GB1344239A
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.)
WILLIAM COULTHREAD
Original Assignee
WILLIAM COULTHREAD
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 WILLIAM COULTHREAD filed Critical WILLIAM COULTHREAD
Priority to GB1344239A priority Critical patent/GB528524A/en
Publication of GB528524A publication Critical patent/GB528524A/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

Abstract

528,524. Boring and drilling tools. COULTHREAD, W. May 5, 1939, No. 13442. [Class 124] [Also in Group NXII] A boring or drilling tool for use with brickwork or the like has a channelled stem 3 of substantially semicircular cross-section and an oblique flat surface 4 which extends forwardly from the crest of the channel towards the tip of the tool so as to form a concaved or re-entrant tip portion. The oblique surface 4 may extend to the edges 5 of the channel so as to form two sharp points, or it may be spaced therefrom by further surfaces 6 which may be sharpened. The surface 4 may or may not be in a plane at right-angles to the general plane of symmetry of the tool, and its concaved perimeter may be levelled as at 7 to form a cutting edge.
GB1344239A 1939-05-05 1939-05-05 Improvements in drills for brickwork and the like Expired GB528524A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1344239A GB528524A (en) 1939-05-05 1939-05-05 Improvements in drills for brickwork and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1344239A GB528524A (en) 1939-05-05 1939-05-05 Improvements in drills for brickwork and the like

Publications (1)

Publication Number Publication Date
GB528524A true GB528524A (en) 1940-10-31

Family

ID=10023062

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1344239A Expired GB528524A (en) 1939-05-05 1939-05-05 Improvements in drills for brickwork and the like

Country Status (1)

Country Link
GB (1) GB528524A (en)

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