US62123A - Improved drift - Google Patents

Improved drift Download PDF

Info

Publication number
US62123A
US62123A US62123DA US62123A US 62123 A US62123 A US 62123A US 62123D A US62123D A US 62123DA US 62123 A US62123 A US 62123A
Authority
US
United States
Prior art keywords
cutting
drift
series
drifts
edges
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 - Lifetime
Application number
Publication date
Application granted granted Critical
Publication of US62123A publication Critical patent/US62123A/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C5/00Milling-cutters
    • B23C5/02Milling-cutters characterised by the shape of the cutter
    • B23C5/12Cutters specially designed for producing particular profiles
    • B23C5/14Cutters specially designed for producing particular profiles essentially comprising curves
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00Cutters, for shaping
    • Y10T407/19Rotary cutting tool
    • Y10T407/1952Having peripherally spaced teeth
    • Y10T407/1962Specified tooth shape or spacing
    • Y10T407/1964Arcuate cutting edge

Description

@uitrit taten datent ffrr.

JOHN EGLINV OF MANCHESTER, ENGLAND, ASSIGNOR TO THOMAS ALDRIDGE WESTON.

. Letters Patent No. 62,123, dated February 154, 1867.

IMPROVED DRIFT.

TO ALL WHOM 1T MAY. CONGERN:

Be it known that I, JOHN EGLIN, of Manchester, England, engineer, have invented certain new and useful Improvements in Drifts or Tools used forEnlarging Holesg und I do hereby declaro that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

My invention relates to improved drifts, of roumhsguure, and other forms, such as are used for enlarging holes for bolts, pins, rivets, keys, and the like, in metal plates, bars, shafts, or blocks, the object being generally to render them more eilicient, more easily driven, `und more capable of leaving thc holes in u smooth, nished condition than the drifts hitherto in use; and in order that my said invention, and the manner of performing the saine, may he properly understood, I have hereunto appended a sheet of explanatory drawings, to he hereL inafter referred to, und representing examples of my improved drifts.

In making a drift according lto my said invention, e steel blank is taken, of a round, squarcfor other required transverse section, and having the usual slight taper longitudinally, and a series of grooves are cut contiulb ously upon it in equally inclined and opposite directions, so as to form a series of diamond-shaped cutters upon thesurface. i Y

Figure 1 is an eleva-tion; and

Figure 2, a plan of a round drift formed in this Way.

Figure 3, an eleva-tion; and

Figure 4, a plan of an oval drift.

Figures 5 and 6 are similar' views of a square drift; and

Figures 7 and 8 arc elevation and planof a ilattdrift.

v A fen' of the diamond-shaped cutting points, formed bythe grooving, are marked with the reference letter a. One side of each groove forms an obtuse angle with the surface, whilst the other side forms therewith a. rectangular, or nearly rectangular, cutting-edge, it being preferred to make this cutting-edge slightly more acute than a right angle'. If the drifts are for round holes, they may be conveniently and expeditiously formed in an ordinary lathe, by taking the blanks, prepared as usual of a tapering form, and cutting thereon a series of continuous inclined grooves in one direction; then reversing the endsof the blank, and cutting a second series of like inclinations in the opposite direction, thereby crossing the former series, and producing, by their numerous intersections, series of double-edged diamondfpointed cut-ters, which cover the whole surface. If of square or oblong form-,the'groopes are more conveniently formed by planing or filing, but their angle of intersection and their continuity may be the saine. This angle may vary with the purposes for which the tool is used, according-to the texture and hardness of the metal on which it is employed; but as a general rule the angle of forty-five degrees `is found preferable. The advantages of my improvement are, that drifts so formed cut with greater ease than the plain, continuous cutting-edges of ordinary drifts, because the points of the diamond t cutters (1,V being t-hc Vfirst to enter the metal operated upon, moet with slight resistance because of their small sizeg-and the cutting, once commenced, is continued by their diverging edges with easy gra-dation, and, cutting equally on both angles, there is no tendency of the drift to twist in the hole, orto deviate from its right direction; and, consequently, the hole is not distorted, but a perfect counterpart of the section of the tool. Itis obvious that the total length of the cutting-edges, when formed in this manner, is nearly double that of a. drift having a single series of grooves und cutting-edges in one direction only; consequently less Aforce is required, und a smoother and more finished hole is produced. This construction enables the drift to be used as a reculer, by rotation in the holc to be enlarged, as it is obvious that the angular cutting edges n'ill cut equally `Well in a horizontales in a vertical direction, and alsov equally in opposite directions,iso that the rotation may be reciprocal or vibrating, by ineens of a hand-lever or otherwise, with equally good effect.

Whnt I eluiln as my invention, and desire to secure by Letters Patent, is-

Forming tht` cutting-edges of drifts of a series of double-edged diamond cutters, by the intersection of two series ot' spirally-inelined grooves, in opposite directions, substantially :tsand for the purposes set forth.

Donc :it Manchester this 22d dny of June, 1866.

JOHN EGLIN.

Witnesses:

EDWARD J Usern Hennes, .Patent Agent, 2O Cross Street, Manchester. C. Serrures HUGHES, Patent Agent, 20 Gross StreegManczster.

US62123D Improved drift Expired - Lifetime US62123A (en)

Publications (1)

Publication Number Publication Date
US62123A true US62123A (en) 1867-02-19

Family

ID=2131659

Family Applications (1)

Application Number Title Priority Date Filing Date
US62123D Expired - Lifetime US62123A (en) Improved drift

Country Status (1)

Country Link
US (1) US62123A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2490029A (en) * 1945-12-03 1949-12-06 John R Clawson Hole cutting broach
US5626444A (en) * 1994-03-09 1997-05-06 Campian; Jonathon Rotary cutting tool
US6234725B1 (en) 1999-12-14 2001-05-22 Jonathan R. Campian Rotary cutting tool
US20020198532A1 (en) * 1993-06-10 2002-12-26 Sofamor Danek Holdings, Inc. Apparatus and method of inserting spinal implants
US20050123363A1 (en) * 2003-12-09 2005-06-09 The Boeing Company Shaper router and method
US20130294852A1 (en) * 2012-05-01 2013-11-07 Seco Tools Ab Compression cutting tool
US20140186129A1 (en) * 2013-01-03 2014-07-03 David Grover Freund High shear cutting tool
US20140234038A1 (en) * 2013-01-03 2014-08-21 David Grover Freund High shear cutting tool
US20150336185A1 (en) * 2013-01-09 2015-11-26 August Rüggeberg Gmbh & Co. Kg Milling burr
US20170216936A1 (en) * 2016-02-02 2017-08-03 Sandvik Intellectual Property Ab Tool with right-hand and left-hand cutting features extending along the full length of the cutting zone

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2490029A (en) * 1945-12-03 1949-12-06 John R Clawson Hole cutting broach
US7326214B2 (en) * 1993-06-10 2008-02-05 Warsaw Orthopedic, Inc. Bone cutting device having a cutting edge with a non-extending center
US7993347B1 (en) 1993-06-10 2011-08-09 Warsaw Orthopedic, Inc. Guard for use in performing human interbody spinal surgery
US7887565B2 (en) 1993-06-10 2011-02-15 Warsaw Orthopedic, Inc. Apparatus and method for sequential distraction
US20040034358A1 (en) * 1993-06-10 2004-02-19 Sofamor Danek Holdings, Inc. Bone cutting device and method for use thereof
US20080287955A1 (en) * 1993-06-10 2008-11-20 Karlin Technology, Inc. Distractor for use in spinal surgery and method of use thereof
US20060036247A1 (en) * 1993-06-10 2006-02-16 Karlin Technology, Inc. Distractor for use in spinal surgery
US20060058793A1 (en) * 1993-06-10 2006-03-16 Karlin Technology, Inc. Distractor for use in spinal surgery
US20060142762A1 (en) * 1993-06-10 2006-06-29 Michelson Gary K Apparatus and method for sequential distraction
US20020198532A1 (en) * 1993-06-10 2002-12-26 Sofamor Danek Holdings, Inc. Apparatus and method of inserting spinal implants
US7399303B2 (en) 1993-06-10 2008-07-15 Warsaw Orthopedic, Inc. Bone cutting device and method for use thereof
US5626444A (en) * 1994-03-09 1997-05-06 Campian; Jonathon Rotary cutting tool
US6234725B1 (en) 1999-12-14 2001-05-22 Jonathan R. Campian Rotary cutting tool
US7090442B2 (en) * 2003-12-09 2006-08-15 The Boeing Company Shaper router and method
US20050123363A1 (en) * 2003-12-09 2005-06-09 The Boeing Company Shaper router and method
US20130294852A1 (en) * 2012-05-01 2013-11-07 Seco Tools Ab Compression cutting tool
US20140186129A1 (en) * 2013-01-03 2014-07-03 David Grover Freund High shear cutting tool
US20140234038A1 (en) * 2013-01-03 2014-08-21 David Grover Freund High shear cutting tool
US20150336185A1 (en) * 2013-01-09 2015-11-26 August Rüggeberg Gmbh & Co. Kg Milling burr
US9884376B2 (en) * 2013-01-09 2018-02-06 August Rüggeberg Gmbh & Co. Kg Milling burr
US20170216936A1 (en) * 2016-02-02 2017-08-03 Sandvik Intellectual Property Ab Tool with right-hand and left-hand cutting features extending along the full length of the cutting zone
US10272504B2 (en) * 2016-02-02 2019-04-30 Sandvik Intellectual Property Tool with right-hand and left-hand cutting features extending along the full length of the cutting zone

Similar Documents

Publication Publication Date Title
US1838520A (en) Turning and boring tool
US2286874A (en) Method of making pinking shears
EP0041266B1 (en) Cutting bits covered with hard material, and method for their manufacture
US2334366A (en) Method of producing face clutches
US104055A (en) Improved machine for cettting and dressing stone
US473231A (en) Plug-cutter
US117786A (en) Improvement in plug-cutters for wood-workers
US1235604A (en) Routing-cutter.
US2301531A (en) Key blank and method of making the same
US1207808A (en) Method of making screen.
EP2484471B1 (en) Machining tool
US402381A (en) Shear-knife
US1714098A (en) Rotary cutter
US1089527A (en) Milling-machine head.
US1316959A (en) keiser
US1964130A (en) Milling and like cutting tool
US2344956A (en) Method of manufacturing milling cutters
US1607083A (en) Process for manufacturing cutting or piercing instruments
US472541A (en) Borinq-tool
US374701A (en) Wood-screw
US874515A (en) Method of making bucket-blanks.
US914966A (en) Coal or rock drill.
US996840A (en) Mechanism for making bolts, screws, &c.
US94503A (en) Improvement in rasps
US1361851A (en) Tool and tool-holder