US2629248A - Door lock retainer - Google Patents

Description

Feb. 24, 1953 H. BURDICK 5 3 D003 LOOK RETAINER Filed Jan. 19, 1949 2 SHEETS-SHEET 1 (K TOR- Feb. 24, 1953 H. BURDICK 2,629,248

' DOOR LOCK RETAINER Filed Jan. 19, 1949 2 SHEETS-SHEET 2 Patented Feb. 24, 195.?

UNITED STATES PATENT OFFICE DOOR LOCK RETAINER Hugh Bur-dick, Chicago, 111., assignor to Illinois Tool Works, Chicago, 111., a corporation of Illinois,

Application January 19, 1949, Serial No. 71,657

' (c1. wo -370) l1 Claims.

1 i it 1 i This invention relates to retaining or fastening devices for removably securing cylindrical lock structures or the like in apertured; panels.

It is an object of thisinvention to provide an improved retaining or. fastening device for mounting and securing a cylinder door lock or the like 'inan apertured panel, and more particularly to the doors or compartments of an automobile.

. Various structures have heretofore been proposed for mountingxand securing a cylinder or pillar lock to the door ofianautomobile, but these devices have not been entirelysatisfactory for a number of reasons. Some of the'devices have been unsatisfactory because of the difliculty of mounting them on the door structure; some because of the difiiculty of fitting. the cylinderslock in them;

particularly when the external diameter of the lock varies somewhatfrom thestandard; somebecause they cannot offersufiicient resistanceg or possess sufficient locking action against axial or turning movement of the outer barrelcf the lock,

particularly when; by an accumulation of rustv or dirt in the lock, the turning. of theinternal cylinder of the lock .causes a strong iturning,forcev to be applied to the outer barrel of theglock; somebecause of the difiiculty of removing a broken or defective lock; and many ihavecheen unsatisfac- 'y becauseoi their high costof. manufacture or assembly. I i

It is accordingly. to

provide a door lock lretaineraor fastening-device of such stmctureasto.be capable on ready and simple application to. the. door; to. permit, ready insertion of the .lock in the retainer; to provide most effective means .for fastening .,the .lock against axialand rotativemovement; to. permit ready removal of a broken .anddefective. lock, and to be relatively.inexpensiveto manufacture and assemble with thefldoorstructure; orqlike panel. l The presentinvention contemplates the provision .of a relatively inexpensive lockretainer or fastening; device composed of; a nut structure securedyto or formed integrally with a sheet metal generally cylindrical..retainelpbent iromltagfiat, one-piecest'amping, :andbent or rol'led intocylindricalformwithend portions interlocked and secured in interlocked relation.;by the. structure of -.the retaineror its assembly .with thespanel on .which the.lockisvtobemountedw I A morespecific object of the invention to provide a cylindrical; sheet metal, lock retainer formed from assessing-a1 stamping' 'and having free end portions thereof secured in pe'rmanent relationyby a nutstructuresecured to integrally with the retainer when rolled or otherwise formed into the cylindrical shape.

A furthen morespecific object of the invention is to provide a retainer which shall be most efiective to secure a cylindrical lock or the like against axial or rotativ-e movement and yet will not become bound to the lock so that a broken or defective lock may be most readily removed and replaced.

Other and further-objects and advantages will be apparent'from the following description when taken in connection with the accompanying drawings wherein: i

Fig. 1 is a view in horizontal section through a door assembly with one embodiment of. the lock retainer operatively associated therewith;

Fig. 2 is a view in vertical section taken substantially along line 2+2 of Fig. 1;

Fig. 3 isaview in vertical section taken substantially along line 3-3 of Fig. 2;

Fig. 4 is a fragmentary view in perspective'of the lock retainer of Figsl to 3, and the mounting plateor panel therefor;

Figs. 5 and flare diagrammatic views inhorizontal section through the mounting plate or panel and showing themanner of assembly of the retainer therewith; U p

g. 7 is a view of the sheet metal stamping or blank of which the retainer ofFigs. 1 to 6 is formed;

Fig. 8 is a perspective view of a modified form of thelock retainer;

Fig. 9 i" "a viewin horizontal section taken substantiallyalong the line 99 ofFig. 8;

Fig. 10 is a view inverti-cal section taken substantially along the line Ill-4 ll of Fig. 9;

Fig. 11 is a view of the sheet metal stamping or blank from which the retainer of Figs. 8 to i0 is formed;

Fig. 12 is a viewin perspective of a second 7 modified form ofthe lock retainer;

Fig. 14 is aview in verticalsection takemsub- 'stantially along the line 14- of Fig."13;'

or blank .of which is formed.

formed figurespit wi-ll be seen-that-thepresent invention "barrelstrengthening ribs 64 and 66.

1 tainr.

contemplates a lock retainer or fastener means or device designated generally by th numeral 20. Lock retainer 20 comprises a sheet metal strip Wrapped or rolled into a cylinder or barrel 22 with the free end portions 24 and 26 overlapped and lyingparallel to a diameter of thecylinder and joinedto the cylinder by substantially parallel flange portions 28 and 30. The cylinder on the side opposite the overlapped end portions 24 and 26 and at the lower end thereof is formed with integral outwardly extending divergent resilient leg portions 32 and 34, The outer end sections 36 and 38 of the leg portions 32 were extend substantially parallel to the overlapped free end portions and are provided with dependent tabs 40 and 42 terminating in outwardlyben't lug or tab portions 44 and 46. Dependent from the flanges 28 and 30, which are perpendicular to the overlapped end po rtions 24 and 26, are shouldered latch lugs or tabs 58 and 50 havin nose portions '52 and 54 extending toward the free end portions inj'spaced relation to the lower The free end portions 24 and 2b are secured overlapped relation by a nut structure 56 which, the form shown in Figs. 1 to 6, preferably comprises 'a'square nut received in aligned openings in the free end portions and having flanges 58 and 60 projecting from opposite sides thereof. to extend over the inner surface of the free end portion 24 adjacent. the opening therein. The flanges 5B and 60 exten'd'from opposite sides 'of thelnut body only from one end thereoi so that the mainbody of the nut projects through .the opening inthe overlapped free end portions 24 and 26 and projects outwardly therefrom. Corners of the nut are staked over the outer surface of the free end portion 26,'as at E2, to retain the nut in assembled relation.

Interrupted, vertically placed rib 64 in the barrel orcylinder 22 opposite the overlapped end portion forms a laterally extending foot, shoulf'der or reteainer supporting portion engageable with the adapterorworkpanel to support the retainer. The rib strengthens and rigidifies the barrel an d the interruption of the rib prevents enlargement of'the retainer bodylwhen the barrel lock "68 isclamped againstthe wall of the retainer by the set screw 10. v

The'retainer '20 is formed from a sheet metal blankJZ, as illustrated in-Fig. 7, the blank being stampedfrom a larger metal strip or sheet to ferrnjinjthe strip laterally spaced protuberances 14'andi'l6 which form, on bendingor wrapping of the stripfabout' a suitable anvil or form or die, the v I I The central sectionofthe' strip alsois stamped to form,

.onpppositesides of its mid-point, fingers i8 and fa'lwhich ar'e separated from the'strip along lines, .or by incisions or cuts,'82 and form on bending of'the strip the resilient leg portions 32 and 34, the fingers 18 and!!!) being integrally joined to lat'erallypro'jecting tabs. Mend 86 which provide the dependent ' tabs 40 and 32 and the outwardly bent'lug portions 44 and '56 of the re- Opposite end sections of the strip are formed 'tvith square openings88 and 951, the end sections forming the" side flanges 28,and 30 in .the overlapped end portions 24 and 26 of'the retainer; the

openings 88 and 90-being thereby aligned or brought .into registration to receive the nut 56. i

The end sections are also formed with the projec- 50 of the retainer.

It will be evident that the blank '52, as shown: in Fig. 7, may beformed by a minimum of stamping operations and thereafter by a simple bending operation, a simple assembly operation, and a simple staking operation formed into the completed retainer srtucture. I

In use, the retainer is snapped into assembled position with an adapter plate or panelilii, having a pair of rectangular openings Q8 and I08 and "a pair of slots I02 and 184, the adapter panel being spot welded or otherwise secured to the face panel E96 of the door structure 00, the race panel having for example an inturned or rebe'nt end portion HQ overlapping one end of the adapter panel and the side flange N2 of the door structure. The face panel we of the door structure and the adapter panel are provided with the usual aligned openings to receive the cylinder lock 68 having the peripheral flange H4 overlying the edgeof the opening in the face panel and limiting the inward movement of the cylinder lock. It should be noted that the cylinde'r lock is provided with the usual recess H5 to receive the positioning and locking set screw 10 of the retainer. In assembling the retainer with the adapterpanel es, the portions and :6 of the tabs 40 and 42 are first introduced into the rectangular openings '93 and 5025, as illustrated "in Fig. '5, and the retainer moved laterally until the latch lugs 43. and 50 are aligned with the slots Hi2 and H14. As exemplified in 5, the retainer then is pushed toward the adapter panel 96, the curved under camming edges of the nose portions 52 and 54 of the latch lugs engaging the forward wall of the slot 102 or its so that the latch lugs cam the retainer along the panel against the resiliency of the arms 32 and 34 until the latching lugs snap through the slots 102 and I04 and the resilient arms snap the retainer back along the panel so that the shouldered latch lugs interlock with the forward end walls of the slots I02 and 104, the dependent tabs t! and 42 resiliently and strongly engage the rear walls of the'openings 98 and 100 and the shouldered tabs 44 and 46 interlock with the rear end walls of the slots 98 and H30.v

The cylinder lock 6B is then introduced or inserted through the aligned openings in the face panel 106 and the adapter panel 9% and then through the cylinder retainer. The set screw l'0 is thentightened by inserting a screw driver or other proper tool through an opening H8 in the side flange H2 of the door. When the set screw 10 is tightened it not only enters the opening I [6 in the cylinder lock to fix the outer barrel of the cylinder-lock against turning but also urges the retainer into frictional engagement with the lock barrel to prevent rotational vibration thereof. Since the cylindrical retainer abuts the adapter panel and extends therefrom with the axis of the barrel substantially perpendicular to the panel it provides an axially rigid and unyielding mounting means retaining the lock against axial displacement or vibration, the snug frictionl'fitting of the retainer with the cylinder lock also aiding in preventingaxial vibration. It will also be evident that the retainer will accommodate itself to substantial differences in the ex ternal diameter of the cylinder locks. Even if the external diameter of thecylinder lock is substantially less than the internal diameterof the barrel retainer, on tightening of the screw 10 the wall ofthe retainer will be forced into a snug fit withat least one-half of the periphery of the cylinderlock'for a relatively long axial distance garters 156 that t llient and frictional retaining action is secured.

If the cylinder lock becomes broken or impaired in its functioning, it is a very simple matter to remove and replace it. Any adherence of the lock to the retainer may be quickly overcome by striking the screw driver inserted through the opening I I8, to loosen the screw so as to shift the retainer laterally "of its axis and the axis of the lock. 1 I

The resiliency of the arms 32and 34 permit this lateral forced hifting ofthe retainer without damage to it and insures its proper repositionirig to receive the new look; Inthe form shown in Figs. 8 to 10, theretainer A is.formed to provide automatically self-in- Tterlocking end portionsand"-thenut l20- is "snapped into assembled position therewith after forming or the retainer.

The retainer 20A is formed with a cylindrical body portion or barrel I22 having angularly spacedjworlr'or panel engaging feet I24 at its lower endand resilient rearwardly'extending arms 'I-26 and I28fhaving depending. tabs I30 andflflythe tabs having outwardly turned mg or tab portions I34 and I36.

The end portions I38 and "I401arebent-at right angles to the connectingfiangeportions-Land 1 I44 and lie in a commonfplaneythe and portions having semi-circular recesses I 46*and: I 48 which 'form an opening through which the-locking screw I49 is inserted for threading in the nut v I 20* The co-planar, slightly vertically spaced end l portions I36 and Ia1einterlocked in' the common plane by inturnedlugs or flanges I50 and I52formed at the ends ofthe'connectingfianges I42 and"I44, the lug-I50 overlying the free' end of'the end portion l38'andfthelugl52 overlying the free end. of the end portion I40 Anenclosing and mounting; housing for the'ndt I20 is formed by the connectingflanges I 42 and I44 and in wardly bent lugs I54 and I56,- I5 8- and -I-60,

formedat theu pper and lower edges of the connecting flanges. 'I'lie 1ugs "I54 and I56 are also interlocked with'the end]portions l38 and I40 to prevent longitudinal movement of these end portions and the consequent separation of the con- I nesting flanges. For that purposemthe end portions are formed with lugs or projections I 62 and 164 respectively interlocking 'with lateral lug por- The hot I20 is retained in the housing formed jfby the end portions'I38 and I40, the connecting I flanges I42 and I44, and the inturned lugs I54, I I56, I50 and I60 by protuberances I10 and I12 struck inwardly from the connecting flanges to l form latchingshouldersto engage thjinner face I of the nut. The retainerfbe'ing of sheet"metal, the nut may be snapped into position over the protuberances 1 I10 and I 12 :after theretainer end portionshave been interlocked."

The barrel retainer '20A is also formed with de-- I f pendent latch lugs I14 and I16 similar to the I latchxlugs' 48 and 50'and the retainer snapped into assembled position: onthelplatetor adapter panel 96in:the 'same 'rnannerias the retainer 20. The outwardly turned tab portions-l34arid I36 lof the tabs. I30 and l32landithei latch .lugsLI14 and I16 secure the retaineriagainst axial move:-,

ment of the retainer in one direction relative to the panel --while the foot portions I24 and the lower edge-of the retainer, engaging the upper surface of the panel, secure the retainer against axial movement in the opposite direction.

The resilient arms I26 and I28secure the retainer againstvibrationand maintain "the shoul- I der of the latch lug interlocked with the panel and thereby. permitting wide tolerances in the dimensions of theretainer and the spacing of the mounting openings in the adapter panel, as

is the case with respect to. the retainer 20. I

like parts of the The barrel retainer 20A may be formed from a one-piece sheet metal blank I18, as shown in Fig. 11, the blank having along its lower edge projections I60, which when bent outwardly form the feet I24; shouldered lugs I82 which form the latch lugs I14 and I16; shouldered lugs I84 which form on bending thenut mountingand. interlocking lugs I58 and I60, and lugs. I86 which pro- 'ject from oppositely directedstrips I88 separated from the-body of the sheetlmetalblankby lines, incisionsor cuts I90. The strips .I88and lugs I86 form, by bending-to propershapes, the resilient arms I26 and I28, the dependent tabs I30 and I32 andtheir outwardly directed tab portions I34 and I36. v

The lower half ofthe blank is also formed at one end with 'a section or. strip I9I in which is formed a semi-circular recess I40 and a dependent lug I02, thestrip I9lt and projection I92 forming when properly. bent the end portion I60 and the interlocking lug I64. Theupper edge of the strip is recessed to form at opposite ends 1 thereof shouldered projections I94 and I96 which ing lugs I54 and I56.

form on bending the nut mounting and interlock- The upper half. of the blank at the end opposite the strip I9I is formed with a like strip I98 having a semi-circular recess I46 and an upwardly extending projection 200, the strip I98 and the projection 200 forming when properly bent the end portion I38. and the interlocking lug I62. 1 i I Theopposite ends of the blank are also formed, inslightlyspaoed relation to the strips I90 and I98, with projections 202 and 204 which form on proper bending the interlocking lugs I and I 52. .The blank while iiat isalsoformed with the nut latching protuberances I10 and I12. The

flat blank I10 may beformed by a minimum of stamping operations from a flat strip and thereafter wound or rolled or pressed in a die'to the shape shown 'in Figs. 8 to 10.. The lugs I54, I56,

I58 and I being bent over the end portions I38, I40, I50 and I52, after the latter have been over lapped, so as to interlock the end portions.

It will be evident that the retainer 20A may be used and assembled with the cylinder lock in the manner as described 'withreference to the retainer 20.

c The modified retainer 203 shown in Figs. 12 to I I 14 comprises a cylindrical barrel or body 206 havmg a plurality of angularly spaced pairs of vertically spaced interrupted ribs 208 and a plurality of .angularly spaced, depending resilient latches 2). Each latch 2I0 comprises a pair. of resilient fingers 2I2 extending oppositely and arcuately from a central portion 2 I4 by which they are adjoined to the barrel or body-206, the fingers being of the same radius asthe barrel or body 206 and having at their opposite free ends latching projections 2I6 extending outwardly. from the fingers. and being. curved .in .both vertical. and 7.5..

. liorizontaldirections. Ii.

T acreage 7 V The retainer formed-with flanges ;2 I18 :and 220 in abutting radially vextending relation, the free end portion 222 of the flange ZIS being bent at right angles and extending over the free end edge of the flange220; Alternate vertical strips of each of the flanges are bent oppositely to provide a plurality of successive oppositely extending semi-circulardouble walled sections 223, 224 and 226 receiving in;thr eaded engagement a locking set screw 228. The threads 230 in the semicircular sections 223, 22,4 and. .226 may be preformed or they maybe formed by employing a threaded cutting screw as the set screw 2-28. The end section 222 of the flange 2 I8 is provided with an opening .232 substantially concentric with the .216 engagethe-edgeof the opening 238, and the clamping latch projections ,force the latching fingers 212 inwardly .until they clear theimder surface :of the adapter panel andispringgradially outward to lock the retainer-against axial withdrawal. The lowerones of .theribs 20S serveas supporting feet forthe retainer, the retaineralso being supportedon the inner surfaceof the panel by the engagement of the'lower edge of :the

' flanges 2l8 and 22llwith the surface'of the panel.

The locking "screw 228' threaded into thesemi circular straps .223, 22d and 22B serves to lock the retainer ends together during hardening of the retainer and until itis assembled with the adapter or work. panel. Theibarrel-retainei'12GB maybe formedin a flat sheetmetalblankQM, as

shown in Fig.1l6, wherein the blank. in flat form is provided on opposite sides of the transverse center with protuberances or. dimples 25.5; .which i form the ribs 2il8-whenthe retainer is rolledin circular form. :Thelcweredge of the strip is formed with :the inverted T-shaped-projections 248having their opposite end edges provided with suitable dimples so thatxthe-projections form the latchesz It when. the strip isrolled' into the final retainer form. i

The end portions25fl and252zare stamped with adjacent, severed straps .25 aIIdSQEGWhiCh on alternate projection in opposite directions form the double thickness semi-circular sections which on threading accommodate the locking screw. Ihe. end portion'25i3 islonger than theendportion 252 by'an amount sufficienttoformthe'laterally bent. end section 222. and this extra; length of the end portion 250 is formed with. a, generally 232' of theretainerin its completedform; Both end portions are also provided withsemi-circular openings 258 and itfiwhich-form onrolling ofthe strip the. wall opening 234 concentric with. the V threaded strap sections 223, 22c and 226.

' plhe strap Sections223, zfi l and HG-maybe sheared from. the strip stock after the strip has been rolledc-r curled intoci-rcul-ar formand the end portions brought into abutting relation.

-When the. simultaneous shearing and ,circular' formingpf these straps. is. thus'accomplished-,;and .the end portions have. been brought inteabutting relation, the shearing of the; strapsainclosefittlng relation serves to retain the device in circular form pending. insertion of the set'screw 228.

In the form shown in Figs. 12 ,to 1 4, the re- 1 tainer is provided with an integral nut portion for the reception of the locking screw and that integral nut structure cooperates with the locking screw to hold the end portions H8 and 220 of the v retainer in overlapped relation. The work panel also serves through its reception of the lugs 12,42 to assist in the holding of the end portions 118 and 229 in overlapped position.

' Ea'ch form of retainer is fabricated fromspring :metal and then hardenedtolform a tough, strong and rigid, although in part resilient, retainer for the'cylinder lock-or the like workpiece.

} It 'will be evident from the foregoing description that applicant has provided an improved retaining or fastening device for mounting securing acylinder door lock or .the like in an apertured panel, and more particularly to the --do'ors or compartments ofan .automobile; a door lock retainer or fastening device of suchstructure as to be capable of ready and simple ,ap-

I pl-ication .to the door, to permit ready insertion of the lock in the retainer, .to provide most effective means for fastening the lockagainstaxial and rotative movement, to permitready removal of a broken and defectiveilock, and to be relatively inexpensive to manufacture and assemble with the door structure or like. panel; acylindrical sheet metal, lock retainer formed from a sheet metal stamping andh'aving free end por tion-s thereof secured in permanent relation by a nut structure secured to orformed integrally with the retainer when rolled or otherwise shaped into the cylindrical form, and a retainer which shall semi-circular: opening 1which iorms. the -;.opening be most effective to secure a. cylindrical lock or the like against axial or rotative movement and yet will not become bound to the lock so that a broken or defective lock may be most readily removed and replaced.

It will be obvious that changes'm'ay be made in the form, construction-and arrangementof the parts without departing from thespirlt of the invention or sacrificing any of its advantages,

and the right is hereby reserved to make :allsuch changes as fairly fall within the scope of the following claims.

The invention is hereby claimed as follows:

1. A fastener for securing a cylindrical article againstaxial-and turning movement relative to an apertured supporting plate, said fastener comprising a hardenedsheet metal strip having a generally cylindrical body part for receivingthe "article, and laterally extending supporting foot portions adapted to pass through-apertures in the supporting plate and interlock with the op- ,-pesite surface ;of said plate, said strip having overlapped end portionsoutwardly oi thecylindri-cal body portion, and means interlocking said overlapped end portions against relative separatne mov e 2. A fastener for securing a lock-structure to lan apertured supporting plate, said fastener comprising a resilient sheet metal member having a substantially cylindrical barrel, portion to receive thelock, supporting portions extending laterally from said barrel vportionto engage andsupport 'vthemember on said plate, saidmember having projecting resilient latching arms, said arms'having portions extending generally axially of. the

barrel portion and interlockingv latch portions at the free'ends of said arms extending substantially normal to the axis of saidbarrelportionior interlockin .enga ement with the-surface .ctih

supporting plate opposite the barrel supporting surface of the plate, said member having overlapped and interlocked end portions, and means carried by said end portions projecting into the barrel portion for clamping the lock to said barrel portion of the member.

3. In a fastener as set forth in claim 2 wherein said clamping means comprises a nut fixed to the member and a clamping screw carried by the nut, the nut securing the end portions of the member in interlocked relation.

4. In a fastener as set forth in claim 2 wherein the clamping means comprises a nut and a screw carried by the nut and wherein the sheet metal member has flange and end portions forming a housing for the nut, said flange portions having latching projections securing the nut in said housing, and the flange and end portions being provided with interlocking lugs.

5. In a fastener as set forth in claim 2 wherein the clamping means comprises intern-ally threaded sockets formed integrally with an outwardly extending portion of the sheet metal member and a screw threaded into said sockets and projecting into the barrel of the retainer.

6. A look retainer comprising a sheet metal strip having a substantially cylindrical barrel portion for receiving a lock structure, laterally extending substantially parallel flange portions formed on said barrel portion, end portions formed on the outer ends of said flange portions and overlapping and extending between said flange portions, work clamping means carried by said overlapping end portion and extending into the barrel portion to clamp the lock structure therein, and resilient latch members and rigid latch members formed on said barrel portion adapted for locking engagement with a work piece to secure the barrel portion thereto.

7. A lock retainer comprising a sheet metal member having a substantially cylindrical barrel portion for receiving a lock structure, a pair of laterally extending substantially parallel flange portions formed on said barrel portion, end portions formed on the outer ends of said flange portions, said end portions being bent substantially perpendicularly to said flange portions and placed in overlapping position, clamping means carried by said overlapped end ortions and extending into the barrel portion to clamp the lock structure therein, a pair of resilient leg portions formed on said barrel portion and extending outwardly therefrom, a tab portion formed on the end of each of said leg portions, and a pair of latching lugs formed on said barrel portion, said tabs and said latching lugs being adapted to engage a work plate in looking engagement to secure the barrel portion thereto.

8. A lock retainer comprising a sheet metal member having a substantially cylindrical barrel portion for receiving a lock structure, a pair of laterally extending substantially parallel flange portions formed on said barrel portion, end portions formed on the outer ends of said flange portions, said end portions being bent substantially perpendicularly to said flange portions and placed in overlapping position, said overlapped end portions having an aperture therein, a nut member positioned in said aperture and secured to said end portions, said nut being adapted to receive a clamping member extending into the barrel portion to clamp the lock structure therein, a pair of resilient leg portions formed on said barre1 portion and extending outwardly therefrom, a tab portion formed on the end of each of said leg portions, and a pair of latching lugs formed on said barrel portion, said tabs and said latching lugs being adapted to engage a work plate in looking engagement to secure the barrel portion thereto.

9. A fastener as set forth in claim 1 wherein the interlocking means comprises double walled substantially semi-circular sections formed from the overlapped end portions, alternate ones of said sections extending in opposite directions to form a screw receiving and supporting structure,

the surfaces of said semi-circular sections defining the screw receiving structure being threaded.

10. A fastener of the type described in claim 2 wherein means integral with said sheet metal member and spaced radially outwardly with respect to the barrel portion thereof is provided to engage the supporting plate and in cooperation with the latching arms prevents rotation of said fastener relative to the supporting plate.

11. A fastener of the type described in claim 2 wherein a portion of at least one of said resilient latching arms is substantially coextensive radially with the barrel portion so that upon mounting of a lock structure therein the resilient latching arm is prevented from movement inwardly relative to the lock structure thereby ensuring continuous interlocking of the latch portions of said latching arms relative to the supporting plate.

HUGH BURDI'CK.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,997,185 Sprague et al Apr. 9, 1.935 2,244,976 Tinnerman June 10, 1.941 2,275,773 Kost Mar. 101, 1.942 2,307,106 Brush Jan. 5, 1.943 2,435,764 Wessel Feb. 10, 1.948 2,443,362 Tinnerman June 15, 1,948

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