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Publication numberUS2024441 A
Publication typeGrant
Publication dateDec 17, 1935
Filing dateJan 10, 1935
Priority dateJan 10, 1935
Publication numberUS 2024441 A, US 2024441A, US-A-2024441, US2024441 A, US2024441A
InventorsGerald John W Fitz
Original AssigneeBriggs & Stratton Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Lock
US 2024441 A
Abstract  available in
Images(3)
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Claims  available in
Description  (OCR text may contain errors)

" 17, 1935, I v J. w. FITZ GERALD ,4

' LOCK V Filed Jan. 19, 1935 3 Sheets-Sh eet 2 ll ll Dec. 17, 1935- J. w. FITZ GERALD 2,024,441

LOCK I Filed Jan. 10, 1955 3 Sheets-Sheet 3 f 17/121 WR/ZEEFE/U 'rnhnwmzfie riti jdn 1 WisJ, a'corpo' i Application January 10,

This inventionarelates to improvements in looks and refers. more particularly t'o:.oylinder:locks a: the typeforming the subject matteriofithe Pat ent No.- '1,965;336, issued:to= John-W. Fitz Gerald ure i July 3 f Shqwi 1,.9'PPmB As in thefiforesaidrpatent. the lock otithis lo'ckififfiiefiib invention:embodies aacylinder seoured'againstro V M a tation*bv'meansot alocking;member projectible Humanismr the" line'sa; radially from the side of the .cylinderzrinto a lfigure sjiswgperepective;view o th groove; in "thezwmountingvmembem thex' locking me er-spawn 9411 member being; pushed itoits operative position 1 by theregular key-1 operablei tumblers. enema :a particular object of this invention to provide'an I improved locking mem ber construotion-and novel V, v means-tor retainingthe. s'ameassembledwith the cylinder 1 ,v s;- T a Morespecificalimitisanobject otthisiinven whi" iigur 10 e tioni to: provide ae selfrcontained preassembled l' ig'ure 121s eperspeot ve view otfthe' locki structure comprisingthe locking -memberiperwse membeiemployedirrthatmodiflcation ill 'at ejd Q0 and aoage orhousing surrounding the locking" inFfi 1 0 a d-li emovecl th memberand pocket or recessin-thecylinden the cage containing the springa means i to :Lyieldably urge thelockingmember toa predetermined po;

sition. 7' :5 eAnother objectotsthis invention is to imi f;

the operation ohlockswbthiswchiarabter hyeproviding 'rolier means between "thy-edges toffiithe .11 e air ine e t, tumblers andtheJloeking-member. j f ery1n s 1me nen smwe; With the above and other objects in view which spring {coiled vabout the stem will appear as the description proceeds, this invention resides in the novel constructionycombination and arrangement of. parts substantially as hereinatterdescribed; and-'morei particularly defined-by theappended-claims, it beingn underxh as stood thatpsuchc'hanges' in the precisewembodb I mentor the hereindisclosed invention mayfibe made as come within the scope-o1 the claims. The accompanyingidrawings illustrate several complete examples or the physical embodiments ll ctr-the invention constructed according to the best modes so far devised for the practical application of the principles thereof, andin which: 1

,Figure 1' is a view partlyin longitudinal sec-. tion: and partly in elevation, illustrating Ialock v 6 equipped with-thisinvention; i permitting adegree of Figure'2 is'a section view through Figure 1 on bi the -barE the planeofthe line 2-2; t .u 7 :Theopposite endsbf"thef-bar 'are steppedjas'at Figure 31s a view similar-to Figure 2 but show I! and the end walisfloffthepage have inwardly ing the key in place and the cylinder unlocked directe' tongu'es I8 overlying the: stepped per D for rotation; V tions* i'ksxsprings IBLaref connnee bet'ween'm Figure 41s a perspective viewo! thecylinder tongues 18 and the stepped portions 11 to yieldshowing the manner of securing the locking mem-v ably urge :thehar =l2 utwardly of the-cage in h her therein: a L one dii'ection." -5:: Figure 5 is a perspective view of the -looking Theedge of the bar I! projected from the cage U member assembly; v by the springs I9 is V-shaped as at 20, and when the aligned notches 25 and thereby retract the opposite edge portion of the bar wholly within the periphery of the cylinder. by the springs IS, the locking member extends into a longitudinal groove ;26""formed"'in'-'the" with",

mounting member in open communication its bore 6.

any one of the tumbler springs 22 is of suflicient strength to overcome their combined force so that any free tumbler through thecam action of the inclined. sides of they notches '25 actin 0n the V-shaped edge 20 will project the bar to its operative lockingposition engaged in the groove 26. p 1;

To secure the locking member assembly in the cylinder, portions of .the cylinder are swedged over notches in the outeredgesoi thetcageside wallsasat 21. I k

If desired, a single-spring l9.- located atthe center of the locking bar may: be used, asillustrated in Figure 6, in placeof the twosprings l9, In this embodiment of the invention, the over: hanging tongues l8 on the end wallsof the cage by engaging the stepped portions I 1 ';serve to limit the movement of the bar with respect to thecage under action of the spring tW-when the locking means is removed from the cylinder andthus takes the place of the tangli projecting into the aperture l5. v, I p 5 In the embodiment of the invention illustrated inFigures 7, 8 and 9, thelocking means consists of a bar 28 slidableradially in a pocket formed in the cylinder .to be projected by the key op-f erable tumblers into operativellocking engage-,- mentin the' groove 26. I To retainthe locking bar 28.,assembled with the cylinder, a retaining member 30 in the form of a U-shaped clip having spring arms,fis en} gaged over the central portion of the bar and received in guide'grooves 3| in the side walls of the pocket 29. As stated, the arms of the retain: ing member 35 are spring tensioned and oneof the arms'has a hook 32, which engages over an abutment 33 at the inner end of one of the grooves 3|, the. extremities of the arms being-inclined as at 34 to facilitate engagementof theretaining member with thecylinden p a The central portion of the bar 28 adjacent=the retaining member 30 is cut out as at 35 anda spring 36 is confined between the bottom of the cut-out portion 35 and theclosed:outer.end-31 of the retainingmember, so that the bar 28 is yieldably urged inwardly towardlthe key operable tumblers. w To improve the operation of the lockand pre clude sticking, the bar 28 males at its inner edge a roller 38 which engagesitheadjacent edges of the tumblers and thereby reduces the degree of friction between the tumblers 'and the-locking bar. a To mount the roller; trunnions 39 extend from its opposite ends to be received in notches 40 When projected formed in arms 4| projecting from the bar, and to retain the roller assembled with the bar, the inner ends of the arms of the retaining member 30 are extended inwardly as at 42, the space therebetween being less than the adjacent reduced diameter of the roller so that when the retaining member is in its normal position, the roller is held against detachment from the bar.

Obviously, the provision of the roller reduces the iriction in the engagement between the locking means and the tumblers and thus aflords a smoother operating lock."

, In the embodiment of the invention illustrated inFigures 10, 11 and 12, the cylinder construc- Jtion as well as that of the, mounting member, is the same as described in conjunction with the f embodiment of theinvention illustrated in Figurefl but the locking means per se is of different construction.

The springs l9 are comparatively, light and Thelocking means in this embodiment of the inventionis indicated generally by the numeral 45. It comprises a solid locking bar 45 substantially rectangular in cross section with one edge 41 vr-shaped tofit in the V-shaped notches of the key operable tumblers; Like the locking bar l2," which is employed i'nthe modification shown in Figure 1, the bar 46 has its opposite ends stepped as at 48 to provide-abutments or projections against which expansive" springs "49' en'- gage to= yieldingly I urge the 'locking bar toward the tumblers. i

The-opposite endsof'the springs bear against walls 50 and 5! which form-part of a housing orr'cage 52 stamped from a single piece of sheet metal; a

TheLhousing or cage 52 is substantially channel-shaped in-cross section-with its web cut out to permit the projection of the locking bar 46 therethrough. Theportionsof'the webof the housing orcage which remain at the opposite ends of the opening through-which the bar projectsiform' the walls" and 5|; The distance between -the'v inner edges of these "walls 'is but slightly greaterthan the length of the; adjacent portion fofthe' bar and as clearly-shown in Figure 10, the opposite ends of this portion of the bar have'overhangingledges 53 to engage the wallst50 and-Stand prevent disassembly'ot the locking bar from the housing or cage. I

Assembly of the 'pa'rtsisefiected by forming the wall 50'with 'a tongue 54"whl'ch, prior to assembly. is bent out'of' the plane of the channel web to increase the distance' between' the inner edges or thewalls'50 and 5 l and permit the passageof .the'locking bar therebetween. 'Mter assembly,-'the tongue 54 1s bent back into" place to'engage'under the'adja'cent ledge 58. It is to "be observed that the housing or cage 52has a-flan'geSSabout its'entire periphery and that at its-opposite ends' it has sidew'ise projectionsii'to-add strength to the structure and permit its formation from a single *piece of sheet I v v The assembly of the 7 locking means withthe cylinder-is efiected in-a manner similar to that hereinbefore described. The "cylinder wall is provided with a pocket conforming in size and shape to" thesize of the housing 52 into which the housing is pressed, and if desired the cylindermay'be staked overthe' ends of the housing as shown in Figure 11'.

From the foregoing description takeninconnectlon with the accompanying drawings, it will bereadily apparent to those skilled in' the art to which this invention tmpertains, that this 75 l spring means to urge the locking member toward invention materially improves the construction of locks of thefcharacter described, and afiords lock cylinder in the mounting member bore, key

operable tumblers in the cylinder, a locking member in the cylinder and projectibleoutwardly therefrom by the key operable tumblers into locking engagement with the mounting member,

the tumblers, and common means to retain the locking member assembled with the cylinder and to take the reaction force of the spring means, said common means embracing the locking member. andextending into the interior of the cylinderr 2 In a lock having a bored mounting member, and a lock cylinder mounted therein, a locking member projectible from'the cylinder into looking engagement -withthe mounting member to secure the cylinder against movement, spring means to yieldably urge the locking member toward the cylinder and out of locking engagement with the. mounting member, and acage enclosing the locking member and said spring and being securedin arecess in the cylinder. 1 3. In a lock, a bored mounting member, a cylinder in the mounting member bore, key-operable tumblers carried by the cylinder, a locking member projectible outwardly of the cylinder into locking engagement withthe mounting member by said tumblers, spring means to yieldably urge the locking memberout oflocking engagement with the mounting member, and a cage enclosing the locking member and secured in a recess in the cylinder to maintain the locking member assembled with the cylinder, said cage providing a support for the spring means; v t

4. In a look, a bored mounting member having a longitudinal groove openingto its bore, a lock cylinder rotatable in the bore and having a longitudinal pocket adapted to lie opposite the groove ,in the mounting member, key operable tumblers carried by the cylinder and having portions extending into said pocket, a locking member movable radially. of the cylinder in said pocket and movable by any key operable tumbler into the groove in the mounting member to secure the cylinder against rotation, spring means to yieldably urge the docking member toward the tumblers and out of said groove, and a cage enclosing thelocking memberfand'the spring and being secured in said pocket tohold the locking member, and spring assembled with the cylinder.

5. In a lock, a bored mounting member having a longitudinal groove opening to its bore, a lock cylinder rotatable inthe bore and having a longitudinal pocket adapted to lie opposite the groove ber, key operable tumblers.

carried by the cylinder and having portions extending into said pocket, a locking member movable radially of the cylinder in saidpocket and movable by any key operable tumbler into the groove in the mounting member to secure thecylinder against rotation, spring means to yieldand spring assembled means to retain the locking member assembled;

relative movement into the mounting member ably urge the locking member toward the tumblers and out of said groove, and a cage enclosing the locking member andthe spring and being secured in said pocket to hold the locking member with the cylinder, and

with the cage, said means permitting a degree of to enable projection of the locking member and operable to push the locking member outthe locking member out groove and retraction thereof out of said groove. 6. In a look, a bored mounting member having a longitudinal groove "communicating with its bore, a lock cylinder rotatable in the mountin member; bore and having an open radial pocket 5 rectangular. space in which the locking member is received, means carried by said cage to retain the locking member therein while permitting a degree of transverse flatwise movement of the locking member with respect to the cage, a spring confined between a part carried by the cage and a part on said locking member to yieldablyv urge the locking member toward the tumblers, and means to secure the cage in the cylinder pocket.

7. In a lock of the character described having a bored mountingmember and a cylinder in the mounting member here, a locking member radially projectible from a pocket inthe cylinder into locking engagement with the mounting member, key operable tumblers carried by the member outwardly of the cylinder to its operative position, and anti-friction means between the locking member and the key operable tumblers.

8. In a lock of the character described having a bored mounting member and a cylinder in the 3 mounting member bore, a locking member radially projectible from apocket in the cylinder into locking engagement with the mounting member, key operable tumblers carried by the cylinder wardly of the cylinder to its operative position, and roller means to reduce friction between the locking member and the key operable tumblers. 9. In a lock of the character described, a bored mounting member,a lock cylinder therein hav- 5 ing a radially extending pocket opening to its .outer surface, key operable locking tumblers in the cylinder with portions thereof extending into said pocket, a locking member movable radially in said pocket and projectible outwardly thereof so into locking engagement with the mounting member by said key operable tumblers, and roller means carried by the locking member and contacting the tumblers.

10. In a lock of the character described, a ,bored mounting member, a lock cylinder therein having a radial pocket opening to its outside surface, key operable locking tumblers in the cylinder with certain of their side edge portions extending into the radial pocket, said sidev edge portions of the tumblers having notches adapted to be aligned upon actuation of the tumblers to a predetermined unlocked position by a proper key, a locking member disposed in said radial pocket and proiec'tible outwardly thereof into locking engagement with the mounting member.

and roller means carried by the locking member and riding on said side edges of the tumblers,

said roller means being receivable in the aligned 7 notches of the tumblers to enable retraction of of locking engagement. withthe mounting member.

' 11. In a locket-the character described, a bored mounting member, a lock cylinder therein havcylinder and operable to push the locking 30 ing a radial pocket opening to its outside surface. hey operable locking tumblers in the cylinder with certain of their side edge portions extending into the radial pocket, said side edge portions of the tumblers having notches adapted to be aligned upon actuation of the tumblers to a predetermined unlocked position by a proper key, and a locking member disposed in said radial pocket and projectible outwardly thereof into locking engagement with the mounting member, roller means carried by the locking member and riding on said side edges of the tumblers, said roller means being receivable in the aligned notches of the tumblers to enable retraction of the locking member out of locking engagement with the mounting member, and spring means to yieldably urge the looking member toward the tumblers to maintain the roller means in contact with the edges of the tumblers and move the locking member out of locking engagement with the mounting'member upon actuation of the tumblers to their unlocked 12. In a lock of the character described, a bored mounting member, a lock cylinder therein, key operable tumblers carried by the cylinder, a looking member operable by the tumblers into opera.w

tive locking engagement with the mounting member to secure the cylinder against movement in the mounting member, said locking member being radially movable in a pocket in the cylinder, a roller carried by the locking member and engageable with the tumblers to reduce friction therebetween, and common means to retain the roller assembled with the locking member and the assembled locking member and roller in the cylinder pocket.

13. In a lock of the character described, a bored mounting member, a cylinder therein, a locking member to secure the cylinder against rotation comprising an elongated bar, a roller extending along one longitudinal-edge of the bar, means to freely rotatably support the roller from the bar, and a clip member embracing the bar and extending over a portion of the roller to hold the roller assembled with the bar.

14. In a lock of the character described, a bored mounting member, a cylinder therein, a locking member to secure the cylinder against rotation comprising an elongated bar, a roller extending along one longitudinal edge of the bar, means to freely rotatably support the roller from the bar, a clip member embracing the bar and extending over a portion of the roller to hold the roller assembled with the bar, and spring means confined between part of the bar and saidclip member to maintain the bar in a predetermined relative position with respect to said clip member.

15. In a lock of the character described, a bored mounting member, a lock cylinder rotatable in the mounting member bore and having a radial pccket opening to the outside surface thereof, key operable tumblers within the cylinder having side edge portions projecting into the said pocket, a locking member radially movable in said pocket and projectible therefrom into locking engagement with the mounting member, a roller extending along the inner edge 01' said locking member and engageable with the side edge portions of the tumblers so that the tumblers are operable on said locking member to push'the locking member to its operative position, a substantially U-shaped clip engaged over the'locklng memberand secured in the cylinder, and spring means confined between part of the locking member andsaid clip to yieldably urge the locking member toward the tumblers and out of locking engagement with the mounting member.

16. In a lock of the character described, a bored mounting member, a lock cylinder rotatable in the mounting member bore and having a radial pocket opening to the outside surface thereof, key operable tumblers within the cylinder having side edge portions projecting into the said pocket, a locking member radially movable in said pocket and projecting therefrom into locking engagement with the mounting member, a roller extending along the inner edge of said locking member and engageable with the side edge portions of the tumblers so that the tumblers are operable on said locking member to push the locking member to its operative position, a retaining member having spaced spring arms engaged over the locking member, a hook on one of said arms adapted to snap in back of an abutment in the cylinder to secure the retaining member assembled with the cylinder, means on said arms of the retaining member engageable with the roller to hold the roller assembled with the looking member,and spring means confined between part of the locking member and part ofsaid retaining member to yieldabl urge the locking member toward the tumblers and out of operative locking engagement with the mounting member.

17. A locking bar assembly for locks of the character described comprising a carrier housing having substantially a channel-shaped cross section with an opening through its web, a looking bar having a part projected through said opening, spaced projections on each end of said locking bar part, the projections of each pair lying at opposite sides of the web of the carrier housing defining the ends of the opening therein, and expansive springs confined between one side of the carrier housing web andthe locking bar projections on said side of the web to yieldingly maintainthe locking bar and carrier housing in relative positions defined by the en; gagement of the opposite sides of said web with the other locking bar projections.

18. A locking bar assembly for cylinder locks of the character described comprising a looking bar, longitudinally aligned projections one on each end of the bar, overhanging ledges one on each end of the bar and spaced from said projections, a carrier housing embracingthe portion of the locking bar between said projections and ledges, and expansive springs confined between the projections and the carrier housing to yieldingly maintain the locking bar and carrier housing in relative positons defined by the engagement of said overhanging ledges with adjacent parts of the carrier housing.

19. A locking bar assembly forcylinder locks of the character described comprising a solid locking bar, a projection and 'a 'ledge spaced threfrom extending from each end of the bar, a carrier housing having awall apertured to receive the locking bar partbetwe en the projections and ledges, expan ve, springs confined between the projections on the locking bar and said wall of the carrierhousing to yieldingly urge the locking bar and housing to relative positions defined by the engaement of said ledges with the wall adjacent the end of the aperture in which the locking bar moves.

20. Alocking bar assembly for cylinder locks of the character described comprising a solid locking bar, a projection and a ledge spaced theretromextending from each end of the bar, a carrier housinghaving a wall apertured to receive.

the locking bar part between the projections and ledges, expansive springs confined between the projections on the locking bar and said wall of the carrier housing to yieldingly urge the locking bar and housing to relative positions defined by the engagement of said ledges with the wall adjacent the end of the aperture in which the looking bar moves, and said wall adjacent one end of the aperture being formed with a tongue readily bent out of planar alignment with the wall to enable assembly and disassembly of the looking I bar and carrier housing.

JOHN w. FITZ Gm.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2460551 *Jun 16, 1945Feb 1, 1949Swanson Gunnar EUnitary tumbler cylinder lock
US2919569 *Mar 30, 1955Jan 5, 1960Gen Dynamics CorpFastening device having a rotatable latch
US3002268 *Dec 18, 1956Oct 3, 1961Yale & Towne Mfg CoSide bar cylinder lock assembly
US3287944 *Mar 18, 1964Nov 29, 1966Gen Motors CorpLocking means
US4069693 *Mar 8, 1976Jan 24, 1978Spalding George TCylinder lock assembly
US4750342 *Sep 4, 1987Jun 14, 1988Clover Co., Ltd.Locking device resistant to forcible opening
US5611225 *Apr 18, 1995Mar 18, 1997Strattec Security CorporationBreakaway cylinder head
US6523381 *Mar 31, 2000Feb 25, 2003Strattec Security CorporationLock with a center gap sidebar
US6978647Jul 2, 2002Dec 27, 2005Master Lock CompanyPick-resistant wafer tumbler lock with sidebars
US7225651Jan 14, 2004Jun 5, 2007Master Lock Company LlcPick-resistant wafer tumbler lock with sidebars
US9003845 *Nov 10, 2009Apr 14, 2015Master Lock Company LlcLock apparatus and method
Classifications
U.S. Classification70/495, 70/377
International ClassificationE05B29/04, E05B29/00
Cooperative ClassificationE05B29/00
European ClassificationE05B29/00