GB1261776A - A drill bit adapter for a hammer drill - Google Patents

A drill bit adapter for a hammer drill

Info

Publication number
GB1261776A
GB1261776A GB57325/69A GB5732569A GB1261776A GB 1261776 A GB1261776 A GB 1261776A GB 57325/69 A GB57325/69 A GB 57325/69A GB 5732569 A GB5732569 A GB 5732569A GB 1261776 A GB1261776 A GB 1261776A
Authority
GB
United Kingdom
Prior art keywords
bore
drill
bit
threaded
drill bit
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
GB57325/69A
Inventor
Franz Chromy
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of GB1261776A publication Critical patent/GB1261776A/en
Expired 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
    • B23B51/04—Drills for trepanning
    • B23B51/0473—Details about the connection between the driven shaft and the tubular cutting part; Arbors
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • E21B10/445—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts percussion type, e.g. for masonry
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2226/00—Materials of tools or workpieces not comprising a metal
    • B23B2226/75—Stone, rock or concrete

Abstract

1,261,776. Drill bits. HILTI A.G. 24 Nov., 1969 [2 Dec., 1968], No. 57325/69. Heading B4C. [Also in Division B3] An adapter permitting attachment to a hammer drill of a variety of drill bits comprises a shank 4a adapted to be received in a tool socket 2 of the drill, and a blind bore 4c, having a threaded wall, for receiving the threaded end of a drill bit. The profile of the threaded wall on a section taken longitudinally of the bore is in the form of an undulating and continuously curved contour. A drill bit having a threaded end shorter in axial length than the depth of the bore and having an effective diameter greater than that of the bore (Fig. 2, not shown) will be provided with a shoulder adapted in use to abut against the end surface 8b of the adapter. As illustrated the drill bit has an effective diameter less than that of the bore and the base of the bore and the end surface of the drill bit are planar and abut. The threaded portion of the bore may have one or more longitudinal grooves and the threaded end of the bit may be complementarily formed so that the bit and adapter can be attached with a bayonet type action. The bit and the bore may each be provided with a multi-start thread.
GB57325/69A 1968-12-02 1969-11-24 A drill bit adapter for a hammer drill Expired GB1261776A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681812229 DE1812229A1 (en) 1968-12-02 1968-12-02 Drill or drill holder for hammer drills

Publications (1)

Publication Number Publication Date
GB1261776A true GB1261776A (en) 1972-01-26

Family

ID=5714983

Family Applications (1)

Application Number Title Priority Date Filing Date
GB57325/69A Expired GB1261776A (en) 1968-12-02 1969-11-24 A drill bit adapter for a hammer drill

Country Status (6)

Country Link
US (1) US3690390A (en)
CH (1) CH507067A (en)
DE (1) DE1812229A1 (en)
FR (1) FR2024992A1 (en)
GB (1) GB1261776A (en)
SE (1) SE386394B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2314287A (en) * 1996-06-19 1997-12-24 John Terrance Crilly Power tool with a fitment

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2419548C2 (en) * 1974-04-23 1983-05-05 Hawera Probst Gmbh + Co, 7980 Ravensburg Drilling tool for rotary hammers
DE2440082C3 (en) * 1974-08-19 1982-02-25 Durofac-Kartro A/S, Valby Hammer drill device
US4007795A (en) * 1976-02-13 1977-02-15 Skil Corporation Attachment for a rotary-hammer tool
DK56178A (en) * 1978-02-07 1979-08-08 M B Nielsen METHOD AND TOOLS FOR USE WHEN DRILLING A HOLE IN REINFORCED CONCRETE
FI108006B (en) * 1994-08-09 2001-11-15 Sandvik Tamrock Oy Penetration tool tool
DE19740277B4 (en) * 1997-09-13 2012-05-24 Robert Bosch Gmbh drilling
US5979913A (en) * 1998-05-19 1999-11-09 Kosik; Thomas Universal driving and setting tool and method of using same
DE10117262A1 (en) * 2001-01-17 2002-07-18 Hilti Ag Rock drill has head with main and subsidiary blades, curved and diametrically opposite cutting edges, and point
US20160059322A1 (en) * 2014-08-29 2016-03-03 Seth Breslaw Second stage drill bit
US20180001395A1 (en) * 2016-06-30 2018-01-04 Shehkai Precision Co., Ltd. Dust vacuuming drill device with an internal dust passageway and method for producing the same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2868507A (en) * 1954-07-26 1959-01-13 American Percussion Tool Compa Well drilling equipment
US2873093A (en) * 1956-09-19 1959-02-10 Jersey Prod Res Co Combined rotary and percussion drilling apparatus
US3050032A (en) * 1960-12-30 1962-08-21 Carey Machine & Supply Inc Percussion-type drill

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2314287A (en) * 1996-06-19 1997-12-24 John Terrance Crilly Power tool with a fitment
GB2314287B (en) * 1996-06-19 2001-01-10 John Terrance Crilly Hand held power tools

Also Published As

Publication number Publication date
US3690390A (en) 1972-09-12
SE386394B (en) 1976-08-09
CH507067A (en) 1971-05-15
DE1812229A1 (en) 1971-01-14
FR2024992A1 (en) 1970-09-04

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