- Dec. 31, 1946. ‘ 2,413,510 R. w. LUCE FAS TENER „2 Filed March 25, 1942 18 mun || l l .Q_r j /5' 27 ~ .my INVENToR. _ @CHA/20 1MM/CE A. BY fw _ ATTORNEY 2,413.5?.0' Patented Dec. 31,` 1946 UNITED STATES ' PATENT OFFICE 2,413,510 ` l. ì FASTENER ` l Richard W. L_uce, Southport, Conn.' Application March 25, 1942, Serial N0. 436,117 23 Claims. (C1. ,g4-_221) The invention herein disclosed relates to a fas tener of the kind that is commonly termed a cowl fastener. ' Ã f Fasteners of the kind mentioned are generally designed and constructed such that the engag ing parts thereof may be readily and easily re leased and reengaged. Such fasteners are uti 2 These objects and certain advantages that will hereinafter appear are realized in the embodi ments of the invention illustrated in the accom panying drawing and described'in detail below. rlîhe drawing includes: Fig. 1 which is a plan of a cowl fastener con structed in accordance with this invention; Fig..2 which is a transverse section of the same lized to secure cowls or covers whichV when re taken on the line 2_2 of Fig. l; moved access may be had to mechanism ’covered Fig~ 3 which is a plan of the same partly in thereby. For this purpose, such fasteners are 10 used extensively in airplane construction and vfrequently consists of two interengaging parts, section; e ' Fig. 4 which is a section taken on the line 4-4 ofFig. l; and . ' one of which is rigidly secured to one of the ele Fig. 5` which is an end elevation of resilient ments or -members to be secured together and the other of which isprovided with a head for 15 washer forming a part of the construction. engaging the other member. ' In a fastener of this kind, it is desirable that a cushion be provided against repeated shock loading to which a rigid fastener is repeatedly subjected in use. And in additionthe parts must be locked in fastening position to prevent rela tive movement and consequent loosening and sep aration under the forces resulting from vibration and shock. As such fasteners have been con The cowl fastener illustrated in Figs. l to 4 includes a fastener element and a device for re taining the fastener element. The latter com prises a base la having oppositely extending wings l with openings therethrough, through which openings 2a rivets 2b extend to secure the base to a plate 2 which constitutes one of the members- to be secured together. The plate 2 generally constitutes a rigid part of the structure structed, heretofore. and prior to the invention 25 and'to this plate a cowl or other cover repre sented by a plate 3 is secured by several fasten herein disclosed, they include a ,single resilient .element that is arranged such that iteifects the ers of the kind herein disclosed. The base has a central substantially circular section 4 from locking of the elements in fastening position and which the wings l extend. Centrally of the sec also carry the load. In some instances, the re' silient element forms one of the interengaging 30 tien d, the base is provided with an opening 5 which, when the base is secured to the plate 2, elements of the fastener and it is directly- and is axially alined with an opening 6 in the plate 2. .rigidly secured to one of the members to be fas These openings are provided to receive the fas tened together. In other instances, the 'resilient tener' 'l which extends through an opening 8 in element is arranged to >act between the'two ele ments of the fastener, one of which is4 rigidly » the plate 3 and the openings 5 and E. It is to be noted that the ropenings 5 and ß are substantially secured to one ofjthe members to be secured larger than the opening through the plate 3 together. The resilient element in this latter which may be countersunk as indicated. construction serves to maintain the two elements On. opposite parts of the'circular sectionV Il, of the fastener in locked interengaging relation 40, there are provided arcuate edge flanges 9 and and alsocarries the load. ' ' w _ An object of this invention isito .provide a cowl fastener that includes a resilient' cushion ar lll extending - perpendîcularly from the base. Each of these flanges extend along an arc of ap proximately ninety degrees. From the flange 19, ranged to accommodate variations in thickness two tongues or tabs ll and l2 extend. Like tabs Aof kmembers tor be fastened‘f-together and toY pre -vent shock loading of thev fastener in service. 4:5 er extensions I3' and i4 extend from the flange ill'. These tabs when bent inwardly, parallel to Another object of the invention is to .provide a the base, serve to hold a fastener retaining mem fastener of this kind in which the locking of the ber secured to the base. elements in fastening position is independent of The retainer member is constructed from a the'cushion for absorbing the shock loading. A further objectof Vthe Vinvention is to provide a l single piece 'of metal and includes a substantially circular section l5 that is received between the fastener of this kind that is so constructed as to flanges 3 and it and over which the tabs extend. _have the property known as “float`,” that is such .VTheï-diameter ofthe circular section l5 is less ' .that _the secured» element is shiftable‘ to .takecare >-of sllght. misalinement in the fastener openings ^ than the insidediarneter of the flanges 9 and Il) 55 sothat the section l5. has limited movement with in the members to be fastened together. 2,413,510 3 4 respect to the base in all lateral directions. Cen is between the stops and the detents 25 and 26 trally of the circular section I5, there is formed (see Fig. 1) . The spring elements with the detents on the section I5 a boss I6, pierced centrally so engaging the pin secure the fastener 1 against thereof to provide an opening for the fastener accidental movement under the iniiuence of and arranged to provide two oppositely inclined, 5 forces resulting from vibration and shock ordi inwardly extending surfaces I1 and I8 which in narily encountered in service, The fastener 1 effect form partial convolutions of a helix in is however readily turned to release position by oppositely directed planes inclined to the surface the application of manual force as through a coin of the base. Intermediate the ends of these sur inserted in the slot in the head. faces, which constitute rigid cam surfaces, the 10 The spring washer 21 interposed between the base of the boss I6 is slotted as at I9 and 20. base and the retainer member serves two purposes. The end edge of each inclined surface, the end Frequently, plates of a speciñed gauge or thick edge distant from the plane of the circular sec >'ness vary slightly in thickness. The washer 21 tion I5, is provided with an extension, extensions accommodates such tolerances in plate thickness. 2l and 22, which extends substantially perpen 15 In addition, during service, particularly on air dicular to the surface and constitutes a stop. planes, fasteners of this kind are repeatedly shock At diametrically opposite points, the section I 5 loaded. The spring 21 acts as a cushion to ab is provided with extensions 23 and 24 whichex sorb the shock and the fastener is not therefore tend between the fianges 9 and I0 and are re subjected to repeated shock loading. versely bent to form resilient spring sections axi 20 It will be observed that the locking spring ele ally spaced from but in cooperating relation with ments23 and 24 are so related to the fastener respect to the inclined surfaces I1 and I8. The that they are not -affected by the load. Their end edges of the resilient elements 23 and 24 are only function is to hold the detents 25 and 25 .shaped as indicated in Fig. 1 to provide an open in position to retain the fastener 1 in fastening ing for the end of the fastener element 1, Inter 25 position on the inclined surfaces I1 and I8. If the mediate the side edges of the element 23 a, detent spring 21 should fail under repeated shock load 25 is :formed therein which extends in the direc ing, it has no effect upon the locking action of tion of the inclined surface I1 and to the end edge the spring elements 23 and 24 and there is, there of the element 23. A similar detent 26 is formed fore, no danger of the fastener loosening and sep in the resilient element 24. 30 arating. Interposed between the retainer member, the Generally, a number of such fasteners are uti sectionv I5 thereof, and the base, the circular seo lized to retain a cover plate or cowl in position. In tion 4 thereof, there is a resilient washer 21. Pref most instances, the several holes in the cover plate erably, this washer 21 is, as illustrated in Fig. 5, 3 do not all accurately aline with the correspond sinusoidal in form to permit the retainer mem 35 ing fastener holes in the rigidly secured plate 2. ber to move, a limited amount, towards the base, The float of the retainer, the ability to move a and to provide a resilient force normally separat limited extent in all lateral directions, serves to ing and tending, under load, to separate these accommodate any such misalinement. In addi members axially of the openings therethrough. tio-n, the provision of rigid inclined surfaces pro The device above described is adapted to be used 40 `vides a rigid securing of the plates together in with the fastener 1 to secure two members to the manner, for example, of a nut and bolt. gether, The fastener 1 primarily consists of a It will be apparent that other resilient members rod headed at one end to provide a head 28. The might be used to replace the washer and, for ex head 28 is slotted diametrically, preferably with ample, resilient tongues might well be cut in the a concave slot 2S which will receive the edge of f’ ’ retainer 'element and extend therefrom towards a coin. Adjacent the opposite or unheaded end the base. As the retainer member is preferably of the rod, a pin 33 extends through the rod di made from heat treatable steel and is heat treated ametrically thereof. Preferably, the rod is first such tongues would provide the desirable resil inserted through the opening 8 in the plate 3 iency.V It will also be obvious that various other and then the pin is driven through an opening 50 changes may be made by those skilled in the art provided therefor in the rod. The fastener ele in the details of the embodiments of the inven ment is thus retained by the plate 3 when the plate tion Ydisclosed in the drawing and described is removed. above within the principle and scope of the inven In securing the two plates together, the fas tion as expressed in the appended claims. tener 1 is entered through the plate 2, the base, I claim: the washer 21 and the retainer member. To ex 1. A device of the kind described comprising in tend through the floating member, the pin must combination a base adapted to be secured to one be alined with the slots I9 and 20. In this posi of two members to -be fastened together, the base tion, with the plates in contact, the rod extends having an opening therethrough, a surface ad through such that the pin is in position, shown in 60 jacent said opening, shiftable with respect there >broken lines in Fig. 3, and in a plane to engage, to and inclined to the plane o-f vthe base, and a upon rotation, the inclined surfaces I1 and I8. resilient element adjacent the inclined surface The fastener 1 is then rotated counterclockwise, and spaced therefrom axially oi' the opening as seen in Fig; 2, and the pin 30 rides up the through the base, the resilient element being po inclined surfaces, drawing up the fastener, and sitioned to engage a member moved along the in drawing the plates 2 and 3 together, The de clined surface. tents 25 and 26 of the spring elements 23 and 2. A device of the kind described comprising in 24 are spaced, axially from the inclined surfaces, combination a‘ base adapted to be secured to one a distance less than the diameter of the pin 3Q; of two members to b'e fastened together, the base As the pin is moved around, and engages the de having an opening therethrough, -a member se tents, the spring elements are forced axially and cured to the base yand having limited movement snap in position behind the Din. The fastener is with respect thereto in all lateral directions, said turned until the pin engages the stops 2I and 22 member including’an inclined surface for engag and when in this position, the plates 2 and 3 are ing a fastener entered therein, and means for firmly secured together. In this position, the pin - Ol retaining a fastener engaged by the inclined sur ¿2,413,510 through` thebase, inclined, .helical surfaces ad iacent the opening and spring sections arranged .face and in fastening position on. theînclined surface.l 1 . ,in juxtaposition withrespect to the inclined sur 3~. A device of the; kind described comprisinggin 4combinatien Va base adapted to beSeQllIîed to one ffrìße. base having an opening for a fastener, and a mem ber securedto the base and having limited move ment with respect thereto in all lateral directions, vthe-,member including a section _arranged parallel .to the base havingan opening therethrough sub stantially alined lwith the opening >through the baserinclined, helicalsurfaces adjacent the open ing and spring sections arranged in juxtaposition with respect to the _inclined surface, _and resilient meansacting between the base and the member. arotary v,operative fastener of the type _1,1 clined fastener engaging su-rface for engaging a fastener entered therein and resilient members `overlapping the inclined surface for engaging an `element of a fastener riding on the inclined sur - 4. A device of the kind described comprising a base adapted to be secured -toone of two members to be fastened together the base having an open ing therethrough to receive a fastener, a member >shifi‘ably secured to >the base, resilient means spacing the .member and the base axially of the opening through the base, the member including 2.0 .a rigid inclined fastener engaging surface for en gaginga fastener element entered in the device. ' y .in combination abase adapted to be securedto Oneof two members _to be fastened together,> the having an opening therethrouglrto receive a fas tener, and a member secured to the base andhav ing >limited movement with respect thereto in_,all lateral directions, said member including anin-- face. , n IQ. A device ofthe kind described comprising of two members tobefastened togethen the base 5. A device of the kind described comprising in combination a base adapted lto be secured to» one „ , of two members tofbe fastened together, the base having an vopening therethrough to receive a co operating fastener element, _a member shiftably .secured to the base and including a rigid fastener engaging surface arranged to cooperate with a fastener, and means in cooperating relation with `respect tothe fastener `engaging surface for re- l taining a fastener engaged by the fastener en gaging surface in' fastening position. y 6. A-device'of ythe kind described comp-risingin rcombinaticm a base adapted to ‘be secured to one V.of two members to be fastened together, the base having-'an openingtherethrough to- receive a coop comprising „a rotary studformed with a radially extending arm and a socket member formedwith a. base shiftably attached to an apertured sup port and adapted _to interlock with the stud arm upon turning movementof the latter, of an at taching member ,comprisingl a plate secured to >said suppQrt, said plate being formed with op r.posedchannel-shaped guides loosely encompass ing portions of said-socket member. ,1.2. ,In a rotary roperative fastener of the _type comprising a ro-tarystud formed with a radially extending arm and a socket member formed `with a base* shiftably attached to an~ apertured sup DOlît and adapted _to interlock with the stud arm upon turning movement of the latter, of an at taching Amember comprising ar plate secured to said support, the sides of said plate intermediate ythe'fastening'attaching said plate „to said sup -port being. channelled for shiftably receiving a portion of »said socket members. 13. A1n a rotary operative fastener of the type cured to the base> and includingvra, rigid fastener di] comprising a rotary stud formed with a radially extendingarm anda socket member formed with _engaging surface arranged to cooperate with _a a base shiftablyattached ,to an apertured sup fastener, and means `in cooperatingrelation with port and adapted, to interlock with the stud arm respect te the fastener engagingsurface vfor re upon turning movement Vof the latter, of an at taining a fastener engaged ’by the fastener. engag ing surface in fastening position, land resilient ‘t taching member comprising a platesecured to ` saidsupport, fthe sides of said plate intermediate means engaging- the member and the base.- v' .the .fastening attaching said plate to said sup 7. A device of the >kind described y,corrnprising in portv being channelled >and presenting opposed combination a baseadapted to be secured‘toone of two members to be fastened. together, the base ` A guides forshiftably receiving a portion of said erating fastener ele-ment, 'a member _shiftably se havingan opening therethrough, a member se . 5.0. -socket member. 14. Ina rotaryoperative fastener of the type cured to the base and having limited movement with respect thereto _in all lateral directions, the member including a Vfastener engaging surface comprisingxa rotary stud formed with a radially about the opening -.through the base _andresilient abase shiftably `attached to »an apertured rsup extending .arm and a socket member formed with members-adjacent the fastener" engaging surface. ív ' port-and adapted to interlock »with the studarm 8. A device of the kind described comprising in combination a base adapted to be secured to one of two members to be fastened together, the base having an opening'thcrethrough, a member se cured to the base and having limited movement with respect thereto in all lateral directions, the member including a fastener engaging surface about the opening through rthe base and resilient members adjacent the fastener engaging surface, and resilient means engaging the member and the base. I 9. A device of the kind described comprising in combination a base adapted to be secured to one of two members to be fastened together, the base having an opening for a fastener, and a i upon turning movement of ' the latter, of i an attaching member comprising a plate secured to said' support, and presenting opposed guides loosely embracing opposed portions of said socket member permitting lateral shifting of said socket base on said attaching plate. 15. In a rotary operative fastener of the typecomprising a rotary stud formed with a radially extending arm and a socket member formed with a base shiftably attached to an apertured sup port and adapted to interlock with the stud arm upon turning movement of the latter, of an at tachingmember comprising an apertured plate secured to said support, and presenting opposed guides loosely embracing opposed portions of said movement with respect thereto in all lateral direc socket member permitting lateral shifting of said socket base over the aperture of said attach tions. the member including a section arranged ing plate. parallel to the base having 'anV` opening there through substantially alined with the opening comprising a rotary stud formed with a radially -' member secured to the base and having limited - , 16. In a rotary operative fastener of the type -faii'agsro 7 extending arm and Aa socket member formed with a base shiftably attached to an apertured sup port and adapted to interlock with the stud arm upon turning movement of the latter, of an at taching member comprising a plate- secured to said support, and presenting opposed guides loosely embracing opposed sides of said socket member. . 17. A socket fastener member for attachment to an apertured support comprising a stud-re 8 20. In a rotary operative fastener of the type comprising a, rotary stud formed with a radially extending arm and a socket member formed with aV base shiftably attached to an apertured sup port and adapted to interlock with the stud arm upon turning movement of the latter, of an at taching member comprising an apertured plate secured to said support, and presenting opposed guides loosely embracing opposed portions of said socket member permitting lateral shifting ceiving socket having an elongated base formed of said socket base over the aperture of said with a stud-receiving aperture and a raised stud attaching plate, said plate being formed with spaced stop means for engaging sides of said engaging seat adjacent said aperture, the ter minal end portions of said base being disposed base to limit shifting` of the socket member in a in a plane spaced from the plane of said seat 15 direction at right angles to said guides. and constituting bearing sections, an attaching 21. A fastener for use in securing together-an member for connecting said socket member to apertured support and a part to be attached said support comprising an elongatediplate sup thereto which is provided With a rotatably porting said socket and having its terminal ends mounted stud, said fastener comprising- a stud beyond said bearing sections ñXedly attached> to y20 engaging fastener member for cooperative en said support, said plate providing a supporting gagementI with the rotatable stud, retainer means surface for said Vbearing portions and being adapted to be mounted on the support and sup formed with an intermediate aperture overlying porting said stud-engaging fastener member and Y said support aperture and transversely disposed means on said retainer overlying a portion of loop means on said plate overlying said bearing 25 said fastener member whereby lateral shifting portions, said socket member being bodily shift of said-stud~engaging fastener member in a plu able upon said attaching member. rality of directions relative to the >aperture of 18. In a rotary operative fastener of the type comprising a rotary stud formed With a radially said support; may be effected. y Y22. A fastener= for use in securing together an extending arm and a socket member formed with 30 apertured support >and a part to be attached a base shiftably attached to an apertured sup thereto ' whichV is provided with a rotatably port and adapted to interlock with the stud 'mounted stud, said ¿fastener comprising a stud arm upon turning movement of the latter, of engaging fastener member provided with spaced an attaching member comprising a plate se bearing portions and 'retainer means adapted to cured to said support, the sides of said plate 35 be mounted on the support and provided with a intermediate the fastenings attaching said plate bearing surface for slidably engaging said bear to said supportV being channelled and presenting opposed guides for shiftably receiving a portion ing portions- of said fastener member, said re »of said socket member, and means for limiting shifting movement of said socket member in a 40 direction at right angles to said guides; 19. In a rotary operative fastener of the type tainer being formed with means overlying and spaced from said bearing portions. ~23. InV a fastener'for Cowling or the like, a supporting structure adapted to be rigidly at tached to anapertured support, a fastener ele comprising a rotary stud formed With a radially ment comprising a metal strip having a central extending arm and a socket member formed with aperture and rigid cam means adjacent the aper a base shiftably attached to an apertured sup 45 ture adapted to receive and interlock with a co port and adapted to interlock with the stud‘arrn operating rotary fastener element upon turning upon turning movement of the'latter, of an at taching member comprising a plate secured to movement o-f the latter,- said strip having bear said sup-port, the sides'of said plate‘_intermediate ingrsections beyond said aperture adapted to bear slidably on theV supporting structure in ya plane ’ the fastenings attaching said plate to said sup 50 spaced from the said cam means, and means on port being channelled and presenting opposed said supporting structure overlying said bearing guides for shiftably receiving a portion of said sections for loosely attaching said strip to said socket member, said plate'. being formed with spaced stop means for engaging sides of said base to limit shifting of the' socket member in a direction at right angles to said guides. supporting structure, said strip being bodily shift ablenlaterally in `at least twoîdirections later ally relative toY said supporting structure. RICHARD W. LUCE.