GB2331261A - Drill bit with depth markings - Google Patents

Drill bit with depth markings Download PDF

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Publication number
GB2331261A
GB2331261A GB9724208A GB9724208A GB2331261A GB 2331261 A GB2331261 A GB 2331261A GB 9724208 A GB9724208 A GB 9724208A GB 9724208 A GB9724208 A GB 9724208A GB 2331261 A GB2331261 A GB 2331261A
Authority
GB
United Kingdom
Prior art keywords
drill bit
depth
drill
markings
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.)
Withdrawn
Application number
GB9724208A
Other versions
GB2331261A9 (en
GB9724208D0 (en
Inventor
Gary Spencer Clark
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
Publication of GB2331261A9 publication Critical patent/GB2331261A9/en
Application filed by Individual filed Critical Individual
Priority to GB9724208A priority Critical patent/GB2331261A/en
Publication of GB9724208D0 publication Critical patent/GB9724208D0/en
Publication of GB2331261A publication Critical patent/GB2331261A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/52—Depth indicators

Landscapes

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

Abstract

A drill bit comprises a shaft 1 with a drill head 2. Along the shaft 1 are a plurality of marks 3 which serve to indicate the depth to which the drill has penetrated. The marks may comprise a series of grooves or may take the form of inked markings or may be a series of metallic bands that are soldered or welded to the shaft.

Description

1-1 2331261 DRILL BIT is This invention relates to a drill bit.
In the field of masonry drilling in particular, but also with other types of drilling operations, it is often necessary to drill a hole of a particular depth in surface. With conventional drill bits, judgement of the depth to which a drill bit has penetrated a surface, and therefore the depth of the hole generated, is a matter of guesswork. If a hole has been drilled too short, then one can drill further with a second attempt, but if the hole has been drilled too deep, it is difficult or impossible to rectify.
Attempts have been made in the past to provide gauges for measuring the extent of penetration of a drill bit but these have been rather cumbersome devices. Alternatively, some artisans have made temporary depth gauges upon the drill bits themselves by, for example, securing pieces of ape at intervals along the drill bit. These may provide a crude indication of depth of penetration but can easily be dislodged by the drilling action itself, leading to inaccuracy or the risk of damage to the drill.
It is an object of the present invention to provide an improved drill bit depth gauge.
According to the present invention, there is provided a drill bit provided, at one or more positions along its surface, with permanently applied depth marking.
The permanently applied depth markings are most preferably formed by one or more radial grooves cut into the surface of the drill bit.
Preferably, two or more grooves are provided, spaced apart by chosen distances, along the surface of the drill but and these may be, for example, at intervals of one inches, two inches, one centimetre, two centimetres or any other desired intervals.
The drill bit is preferably a masonry drill bit but may be any other type of drill bit.
An embodiment of the present invention will now be described, by way of example only, with reference to the accompanying drawings which shows a masonry drill bit.
According to the figure, a masonry drill bit comprises a shaft 1 and a drilling head 2. Provided at spaced intervals along the surface of the shaft are radial grooves 3 which may be for example one inch (2.54 c::ntimetres) apart.
In use, the drill bit is mounted to a drill in known manner and applied to a surface so that when the first of the grooves reaches the surface itself, the user knows for certain that the drill bit has penetrated to a certain predetermined depth. If this depth is not sufficient, then he may continued applying the drill bit until the second groove 3 (for example) has been reached.
More or less than three grooves may be provided, spaced apart, on the drill bit.
The grooves may be formed in any manner upon the bit, e.g. b... cutting grooves in the surface, by etching or by other means.
In some embodiment--, instead of grooves, other permanent markings may be applied, such as by the use of permanent inks which are applied to the surface of the drill bit. Alternatively, permanently affixed bands may be applied to the surface of the bit, e.g. of a contrasting type or colour metal to the metal of the drill bit shaft and which can be soldered, welded or otherwise permanently applied to the shaft.
I- - 4

Claims (8)

1. A drill bit provided, at one or more positions along its surface, with permanently applied depth marking.
2. A drill bit as claimed in Claim 1, wherein the depth markings are formed by one or more radial grooves cut into the surface of the drill bit.
3. A drill bit as claimed in Claim 1 or Claim 2, wherein at least two different depths are marked, spaced apart along the surface of the drill bit.
4. A drill bit as claimed in Claim 1, wherein the markings are formed by applying permanent ink to the surface of the drill bit.
5. A drill bit as claimed in Claim 1, wherein the markings are formed by bands permanently affixed to surface of the drill bit.
6. A drill bit as claimed in Claim 5, wherein the bands are metal of a contrasting type or colour to the metal of the drill bit shaft.
7. A drill bit as claimed in any preceding claim 30 which is a masonry drill bit.
8. A drill bit substantially as hereinbefore described with reference to, and as illustrated by, the accompanying drawing 1
GB9724208A 1997-11-18 1997-11-18 Drill bit with depth markings Withdrawn GB2331261A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9724208A GB2331261A (en) 1997-11-18 1997-11-18 Drill bit with depth markings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9724208A GB2331261A (en) 1997-11-18 1997-11-18 Drill bit with depth markings

Publications (3)

Publication Number Publication Date
GB2331261A9 GB2331261A9 (en)
GB9724208D0 GB9724208D0 (en) 1998-01-14
GB2331261A true GB2331261A (en) 1999-05-19

Family

ID=10822160

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9724208A Withdrawn GB2331261A (en) 1997-11-18 1997-11-18 Drill bit with depth markings

Country Status (1)

Country Link
GB (1) GB2331261A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2392134A (en) * 2002-04-26 2004-02-25 Milwaukee Electric Tool Corp Tool element with indicator means
GB2440128A (en) * 2006-07-19 2008-01-23 Gau Woei Super Hard Tool Co Lt Cutting bit with measuring scale
FR2904941A1 (en) * 2006-08-21 2008-02-22 Meherenc De Saint Pierre He De Rotating tool e.g. drill, for use with e.g. screw driver, has shank with straight section having shape of regular polygon whose number of sides is equal to or multiple of numbers of jaws of chuck to permit positive blocking of tool in chuck
EP3296045A1 (en) * 2016-09-19 2018-03-21 DreBo Werkzeugfabrik GmbH Drill bit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1191934A (en) * 1967-09-08 1970-05-13 Oswald Willy Thorsman Improvements relating to Drills and Plugs to be used therewith
US4527449A (en) * 1982-09-13 1985-07-09 Rule Industries, Inc. Boring bit and method for manufacture thereof
US4710075A (en) * 1986-10-01 1987-12-01 Boehringer Mannheim Corporation Adjustable drill gauge
US4904130A (en) * 1989-01-11 1990-02-27 Gorman Jeremy W Cutting tools with depth indication
EP0515274A1 (en) * 1991-05-21 1992-11-25 PELTIER, Patrick Improvements to helical drills for bone surgery, in particular for dental surgery

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1191934A (en) * 1967-09-08 1970-05-13 Oswald Willy Thorsman Improvements relating to Drills and Plugs to be used therewith
US4527449A (en) * 1982-09-13 1985-07-09 Rule Industries, Inc. Boring bit and method for manufacture thereof
US4710075A (en) * 1986-10-01 1987-12-01 Boehringer Mannheim Corporation Adjustable drill gauge
US4904130A (en) * 1989-01-11 1990-02-27 Gorman Jeremy W Cutting tools with depth indication
EP0515274A1 (en) * 1991-05-21 1992-11-25 PELTIER, Patrick Improvements to helical drills for bone surgery, in particular for dental surgery

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2392134A (en) * 2002-04-26 2004-02-25 Milwaukee Electric Tool Corp Tool element with indicator means
GB2392134B (en) * 2002-04-26 2006-09-13 Milwaukee Electric Tool Corp Reciprocating saw blade and marking system
GB2440128A (en) * 2006-07-19 2008-01-23 Gau Woei Super Hard Tool Co Lt Cutting bit with measuring scale
FR2904941A1 (en) * 2006-08-21 2008-02-22 Meherenc De Saint Pierre He De Rotating tool e.g. drill, for use with e.g. screw driver, has shank with straight section having shape of regular polygon whose number of sides is equal to or multiple of numbers of jaws of chuck to permit positive blocking of tool in chuck
EP3296045A1 (en) * 2016-09-19 2018-03-21 DreBo Werkzeugfabrik GmbH Drill bit

Also Published As

Publication number Publication date
GB2331261A9 (en)
GB9724208D0 (en) 1998-01-14

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)