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Publication numberUS2146461 A
Publication typeGrant
Publication dateFeb 7, 1939
Filing dateJun 1, 1938
Priority dateJan 6, 1937
Publication numberUS 2146461 A, US 2146461A, US-A-2146461, US2146461 A, US2146461A
InventorsMitford Bettington Egerton
Original AssigneeAviat Developments Ltd
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Method of riveting
US 2146461 A
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Description  (OCR text may contain errors)

Patented Feb. 7, 1939 METHOD F RIVETING Egerton Mitford Bettington, Four Trees, Spring Grove, Loughton, England, assignor to Aviation Developments Limited, London, England, an English joint-stock company Application June 1, 1938, Serial No. 211,232' In Great Britain January 6, 1937 3 Claims.

This invention relates to methods of riveting employing tubular rivets placed upon a mandrel and upset by withdrawing an enlarged head of the mandrel through the rivet while exerting an 5 opposing thrust against the rivet head.

Various types of tubular rivet and methods of placing them have already been employed.

In one method the enlarged head of the mandrel is deformed after it has upsetl the end of the rivet and is decreased in size on being drawn through the supported part of the rivet stem. A disadvantage of this method is that the head of the mandrel must be renewed for each rivet.

In another method a mandrel having a rigid, 16 generally pear-shaped, head is drawn through the bore of a rivet, which is provided with an internal annular bead. As the mandrel is drawn through the bore, the internal bead is expanded by the mandrel head to upset the rivet. 2Q The manufacture of this in'ternaily beaded type oi' rivet is expensive and difficult and the rivets do lnot lend themselves readily to the riveting of varying thicknesses of sheet, since if the rivet is too short a part of the internal bead is within v 26 the thickness of the work, thereby overstraining the mandrel and frequently breaking it. On the other hand, if the rivet is too long the expanded portion of the rivet stands clear of the work and the sheets are not held firmly together. Again, 30 apart from its internal bead, the bore of the rivet, originally cylindrical, remains so and if the rivet hole is large enough for the rivet to be easily inserted the rivet may not be a tight ilt, since after expanding the end of the rivet the head of the mandrel exerts little, if any, outward pressure upon the. parallel sides of the stem. Y

According to the present invention a tubular rivet is employed having a head or flange at one end and a stem or shank which is internally 4 tapered towards the free end away from the head. This provides a greater thickness of metal atthe end which is entered by the enlarged head of the mandrel to upset the rivet. Onl drawing the enlarged head of the mandrel into the rivet 1 the thickened end of the stem or shankis immediately upset and, due to the greater thickness of the shank, some of the metal is drawn in advance of the mandrel head and expands the shank 5o of the rivet radially into a tight t with the rivet hole which is initially of slightly greater diameter than the external diameter of the rivet shank.

Further objects and advantages of the tubular rivets according to the present invention will be forms of rivet and a method of upsetting them shown in the accompanying drawing in which:

Figs. 1 to 3 are longitudinal sectional views of three forms of rivet; and

Figs.'4 and 5 are sectional views showing successive steps in the upsetting of a rivet. Fig. 4 shows the rivet in position and the shank of the upsetting mandrel passed through the rivet, while Fig. 5 shows a later stage of the upsetting operation.

Referring to the drawing:

-The form of rivet shown in Fig. 1 has a cylindrical external surface A and is provided at one end with a head B, the outside edge of which is chamfered as indicated at'C. The bore D of the rivet is uniformly tapered throughout its length, the diameter being least at the tail end of the rivet. The rivet is chamfered as indicated at E to facilitate insertion of the rivet.

Fig. 2 shows a further form of rivet having a cylindrical external surface A and a head B which is tapered as shown at F. In other respects this rivet is similar to that shown in Fig. 1.

Fig. 3 shows a further form of rivet having 'a cylindrical external surface A and aI head B tapered at F. The sharp edge of the tapered surface F is removed as indicated at G. The bore of the rivet is generally parallel over the part H at the head end of the rivet and is continued to the tail end of the rivet by a uniformly tapered section J. The diameter of the tapered section J is least at the tail end of the rivet. A chamfered surface E is formed to .facilitate insertion of the rivet.

A method of fixing the rivets according to this invention is shown, by way of example, in Figs. 4 and 5. A rivet for instance of the form illustrated in Fig. 1 is inserted into holes drilled in two members K, L to.be secured together and whichvform the workpiece, the diameter of the holes being slightly greater than that of the rivet thus leaving an annular space M surrounding the rivet.

' The head B of the rivet is pressed against the outer surface of the member L by the nose N of a riveting machine of which only a part is shown. The shank O of a mandrel of the riveting machine has an enlarged pear-shaped head P. Q and is then passedA through the rivet from its tail end and is engaged in the riveting machine as shown in Fig. 4.

As the conical part P of the head of the mandrel is drawn through the rivet it causes the tail end R of the rivet to be expanded and upset into conical surface P of the mandrel head and this is expended outwards to ensure the tightness of the rivet, the material of the rivet being sufciently ductile to allow this action. t

To complete the hiring of the rivet the head o the mandrelis drawn completely through the rivet.

@wing to the simple form of the rivets of the present invention they mayi as an alternative to machining be formed by pressing or stamping from blanks or tubes. With certain materials it may be advantageous to subject the rivets so formed to heat treatment to increase or restore their ductility.

What l claim is:

l. The method oi riveting comprising inserting through a hole in the parts to be riveted a hollow rivet having an outside diameter less than the hole, said rivet having a flange at one end and a wall increasing in thickness from the anged end to the tail end, holding the rivet with the iiange against one of the parts to be riveted and with the tail projecting beyond another part, and drawing through the rivet from the tail towards the ange a tool having a tapered head 'larger than the internai diameter of the tail of the rivet whereby to initially upset the tail of the rivet amasar.

thereof an expanding tool having a head of larger diameter than the internal diameter of the tail end of the rivet whereby to upset said tail end and thereafter expand the shank of the rivet into tight engagement with the walls of the hole.

3. The method of riveting comprising inserting through a hole in. the parts to be riveted a mandrel having a shank portion and an enlarged head, said shank portion carrying a hollow rivet having a ange at one end and an internally tapered wall increasing in thickness from the anged end towards the tail end of the rivet and towards the enlarged head of the mandrel, holding the rivet with the flange against one of the parts to be riveted and with the tail projecting 'beyond another part and drawing the head of the mandrel through the rivet from the tail toward the anged end whereby to upset said tail end and thereafter expand the wall of the rivet into tight engagement with the walls of the hole.

EGRTON i *i RD BE'I'IINGTON.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2429239 *Sep 20, 1941Oct 21, 1947George D RogersExplosive rivet
US2501576 *Oct 3, 1945Mar 21, 1950Automatic Elect LabTool for spinning over ends of tubular rivets
US2527307 *Jun 23, 1947Oct 24, 1950Huck Mfg CoRivet and method of riveting
US2531270 *Oct 22, 1947Nov 21, 1950Huck Mfg CoBlind rivet
US2670021 *Jun 3, 1949Feb 23, 1954William V StackhouseDie collapsed anchor nut
US2932889 *Jul 20, 1955Apr 19, 1960United States Steel CorpPipe upsetting
US3057055 *Mar 21, 1958Oct 9, 1962Fraser Kenneth GMethod of making universal joints
US3094773 *Aug 10, 1959Jun 25, 1963Bendix CorpProcess for installing liners in fluid actuators
US3190134 *Aug 9, 1963Jun 22, 1965James E SadlerHub driven device and means and method for making the same
US3835688 *Jan 17, 1973Sep 17, 1974J KingApparatus and method for sizing holes
US3949535 *Aug 29, 1974Apr 13, 1976King John O JunColdworked joint held by seamless tubular member
US4003288 *Aug 25, 1975Jan 18, 1977Aerpat A.G.Tubular rivet
US4030264 *Apr 12, 1976Jun 21, 1977Steel Web CorporationWood rivet and method of installation in a truss
US4164807 *Mar 19, 1976Aug 21, 1979King John O JunMethod of forming a coldworked joint
US4447944 *Jun 16, 1982May 15, 1984The United States Of America As Represented By The Secretary Of The NavyMethod of forming a tubular rivet in fastening relation to a plurality of laminates
US4701993 *Oct 28, 1986Oct 27, 1987Advel LimitedMethod of installing threaded fastener
US4815195 *Sep 4, 1986Mar 28, 1989Hitachi, Ltd.Method of combining plurality of parts and structure of plurality of parts combined by same
US4880392 *Feb 24, 1989Nov 14, 1989Schieferly Stephen BSlidelatch securing post
US7025550Aug 8, 2002Apr 11, 2006Huck International, Inc.Pull type swage fasteners with removable mandrel
US7059816Oct 17, 2002Jun 13, 2006Textron Inc.Nut plate
US7114900Aug 30, 2004Oct 3, 2006Textron Inc.Push-type rivetless nut plate and method and apparatus for installing same
US7237314Dec 7, 2004Jul 3, 2007Sps Technologies, LlcMethod of securing a nut plate to a wall defined by an aperture through a workpiece
US7575404Oct 18, 2007Aug 18, 2009Sps Technologies, LlcNut plate fastener assembly for composite materials
US7622178 *Apr 3, 2006Nov 24, 2009United Technologies CorporationMetallic doubler repair of composite arcuate flanges
US7650681Jan 12, 2007Jan 26, 2010Newfrey LlcBlind rivet method
US7698798Aug 24, 2006Apr 20, 2010Sps Technologies, LlcPush-type rivetless nut plate and method and apparatus for installing same
US7727349Aug 31, 2007Jun 1, 2010United Technologies CorporationMetallic double repair of composite arcuate flanges
US7802952Jan 4, 2008Sep 28, 2010Sps Technologies, LlcNut plate fastener assembly for hard metal materials
US7824141Aug 3, 2007Nov 2, 2010Newfrey LlcBlind rivet
US7857564 *Aug 21, 2007Dec 28, 2010Hilti AktiengesellschaftExpansion dowel
US7926318Nov 16, 2009Apr 19, 2011Fatigue Technology, Inc.Alignment device and methods of using the same
US7926319Feb 19, 2009Apr 19, 2011Fatigue Technology, Inc.Mandrel assembly and method of using the same
US7937821Jan 14, 2010May 10, 2011Newfrey LlcBlind rivet method
US7946628Oct 28, 2008May 24, 2011Fatigue Technology, Inc.Tubular metal fitting expandable in a wall opening and method of installation
US7958766Jun 29, 2007Jun 14, 2011Fatigue Technology, Inc.Self-aligning tools and a mandrel with retention sleeve
US8061178May 13, 2011Nov 22, 2011Fatigue Technology, Inc.Self-aligning tools and seating assemblies
US8069699Aug 28, 2007Dec 6, 2011Fatigue Technology, Inc.Installation/processing systems and methods of using the same
US8096742Aug 3, 2007Jan 17, 2012Newfrey LlcBlind rivet
US8117885May 13, 2011Feb 21, 2012Fatigue Technology, Inc.Mandrel with retention sleeve and methods of using the same
US8128308Apr 8, 2008Mar 6, 2012Fatigue Technology Inc.Double flanged bushings and installation methods
US8191395Mar 14, 2011Jun 5, 2012Fatigue Technology, Inc.Alignment device and methods of using the same
US8312606Oct 16, 2008Nov 20, 2012Fatigue Technology, Inc.Expandable fastener assembly with deformed collar
US8328483May 6, 2003Dec 11, 2012Newfrey LlcBlind rivet
US8353193Mar 14, 2011Jan 15, 2013Fatigue Technology, Inc.Mandrel assembly and method of using the same
US8366363 *Oct 7, 2010Feb 5, 2013Newfrey LlcBlind rivet
US8387436May 29, 2012Mar 5, 2013Fatigue Technology, Inc.Alignment device and methods of using the same
US8402806Nov 1, 2011Mar 26, 2013Fatigue Technology, Inc.Installation/processing systems and methods of using the same
US8506222Jul 17, 2009Aug 13, 2013Fatigue Technology, Inc.Nut plate assembly and methods of using the same
US8528186 *Jan 28, 2008Sep 10, 2013Deep Tek Ip LimitedMethod and apparatus for securing a conduit to a structure
US8556531 *Nov 17, 2006Oct 15, 2013United Technologies CorporationSimple CMC fastening system
US8568034Jan 11, 2007Oct 29, 2013Fatigue Technology, Inc.Bushing kits, bearings, and methods of installation
US8636455Apr 9, 2010Jan 28, 2014Fatigue Technoloy, Inc.Installable assembly having an expandable outer member and a fastener with a mandrel
US8647035Dec 16, 2010Feb 11, 2014Fatigue Technology, Inc.Modular nut plate assemblies and methods of using the same
US8763229Jun 4, 2012Jul 1, 2014Fatigue Technology, Inc.Expandable crack inhibitor method
US20100000280 *Mar 6, 2009Jan 7, 2010Leonard Frederick ReidExpandable member with wave inhibitor and methods of using the same
US20100032939 *Jan 28, 2008Feb 11, 2010Alexander Charles CrawfordMethod and apparatus for securing a conduit to a structure
US20100072210 *Oct 31, 2007Mar 25, 2010Makoto IkemiyaCap, multi-layered panel, and refrigerated container
US20110027042 *Oct 7, 2010Feb 3, 2011Newfrey LlcBlind rivet
US20120079708 *Sep 22, 2011Apr 5, 2012Newfrey LlcBlind Rivet and Fastening Method Thereof
CN100591928CNov 5, 2002Feb 24, 2010阿库门特知识产权有限公司Nut plate
DE3420360A1 *May 30, 1984Dec 6, 1984Avdel LtdMit einem gewinde versehenes befestigungselement sowie verfahren zum setzen desselben
EP1468196A2 *Nov 5, 2002Oct 20, 2004Textron Inc.Nut plate
EP1779964A1 *Oct 27, 2006May 2, 2007Fatigue Technology, Inc.Radially displaceable bushing for retaining a member relative to a structural workpiece
WO2008017633A1 *Aug 2, 2007Feb 14, 2008Zf Lenksysteme GmbhGear box
Classifications
U.S. Classification29/512, 29/523, 470/28, 411/501, 411/44
International ClassificationF16B19/04, F16B19/10, B21J15/04, B21J15/00, F16B4/00
Cooperative ClassificationF16B4/004, B21J15/043, F16B19/1045
European ClassificationF16B4/00P, B21J15/04B, F16B19/10B2B