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Publication numberUS2939737 A
Publication typeGrant
Publication dateJun 7, 1960
Filing dateJan 24, 1958
Priority dateJan 24, 1958
Publication numberUS 2939737 A, US 2939737A, US-A-2939737, US2939737 A, US2939737A
InventorsNygren Aarre E E
Original AssigneeNygren Aarre E E
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Door lock
US 2939737 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

A. E. E. NYGREN June 7, 1 960 DOOR LOCK 2 Sheets-Sheet 1 Filed Jan. 24, 1958 Y Trag/vins.

June 7, 1960 A. E. E. NYGREN 2,939,737

DooR'LocK Filed Jan. 24, 1958 2 Sheets-SheetI 2 FIG. 6.

L /r/G. 2


elements of the latch in their 'operative or retracted United States Patent DOOR LOCK Aarre E. E. Nygren, 53'6 Isham St., Apt. D-D, New York 34, N.Y.

Filed Jan. 24, 195s, ser; No.71`1,07s

1 claim. (ci. 292-170) This invention relates to door locking or latching devices and, more specifically, to a door locking `device for inside doors wherein the latch is moved 'to its unlocked position by a linearly directed push-pull activation of the door handle.

One of the primary objects lof this invention is' to proi vide a door locking device for use on doors having a handle or knob on opposite sides thereof whereby a push or pull movement on one or the other of the respective knobs will effect disengagement of the locking member from its keeper.

Another object of this invention isto provide a door locking device of the type generally described 'above togetherl with automatically operable means for holding the `latching member in its retracted `inoperative position'.

lA further object of` this invention is to provide a door locking device of the type described supra together with means mounted op the door jamb for automatically releasing the latching member from a retracted inoperative position for movement to its extended operative position when the door is closed.

A still further object of this invention is to provide a door locking device which is rapid and substantially noiselessin operation. j

It is still another object of the invention to provide a' doorlatch of the type generally described above which when moved to its retracted inoperative position has no projecting parts aside and apart from its operating knobs.

This invention contemplates, as still another object thereof, the provision of a door locking device which is non-complex in construction and assembly, inexpensive to manufacture, and durable in use. j

Other and further objects and advantages of the present invention will become more evident from a consideration of the'following specification when read in conjunction with the vannexed drawings, in which:

Figure 1 is a front elevational view of a door locking or latching mechanism constructedvin accordance with the teachings ofthe present invention; Y

Figure 2` is a detail cross-sectional View of the device illustrated in Figure l,`Figure 2 being taken substantially' Patented June 7,1960

perspective view of the door ence numeral 1,0 designates, in general, a conventional door having a stile 1'2 extending vertically along` a side thereof. As seen in the drawings, the stile 12 is formed with a transversely extending substantially cylindrical bore 14 which extends from side to side thereof and which is intersected atl right angles intermediate its ends by a second bore 16 which projects inwardly from the outer end^1`7 of the stile 12. To serve a purpose to be made clear below, the outer end of the bore 16 is in open communication with the inner end of an enlarged cavity 18 `having ashoulder 20 atthe outer end thereof. The

, outer end of the cavity 18 is in open communication with v a horizontally elongated substantially rectanglar guide slot communication with the inner end of a passage 32 which opens at its outer end in the plane of one side ofthe stile 22 defined by a pair of oppositely disposed laterally spaced paralleland confronting top and bottom walls 24, 26`

(see Figure 6), a pair of longitudinally spaced and confronting end walls 28, 30 of which the latter is in open 1.2. The outer end of the slot 22 opens into anenlarged` opening 34 having a rabbeted marginal edge 36.

A vertically extending, substantially semi-circular recess 38 (see Figure 3) opens into the plane of the other side of the stile 12 at a point spaced inwardly from its outer end 17 and communicates at its upper end with the bore 14 With the axis of the former substantially perpendicular to the axis ofthe latter. As is seen in Figure 3, the lower end of the recess 38 communicates with an enlarged circular bore 40 which extends transversely through the stile 12 from side to sidethereof and with the longitudinal axis of thebore 40 disposed below the longiftudinal axis of the bore I14 and being substantially parallel l thereto.'

on the horizontal plane of line 2--2 of `Figure l, looking in the direction of the arrows and showing the latching mechanism in its extended operative position;

Figure 3 is a detail cross-sectional view taken substantially on lthe vertical plane of line 3--3 of Figure 1, looking in the direction of the arrows;

Figure 4 is a detail cross-sectional view taken substantially on the line 4-4 of Figure 3, looking in the direction of the arrows;

Figure 5 is a detail cross-sectional view similar to Figure 2, Figure 5, however, illustrating the component positions; Y 4

"Figure 6 is an end elevational view of a door equipped with thelocking device constructed 4in accordancewith this invention, Figure 6 being-taken on the vertical plane -Reference numeral 42 designates an elongated substantially hollow tubular guide sleeve which extends through the bore 14 and is provided with a pair of opposed externally threaded ends which project bey'ond oppositesides of the stileV 12. One end of a rst vertically clon--1v gated substantially rectangular cover or `face plate 44 is formed with an aperture which receives therethrough the threaded end of the guide sleeve 42 proximate the inner side 46 of the stile and rests thereagainst. `'lo-serve a' f function to be described, the other end of the face plate 44 is formed with a'second aperture 48, the aperture 48 having substantially the same diameter as the diameter'of the `bore Y40 and being coaxially aligned` therewith.

As is seen in Figure 3 of the drawings, 'the guide'fsleevec 1 42 is provided with a pair of downwardly facing openings 50, 52,` each being disposed vadjacent one of its `respective ends and athird downwardly facing opening54 disposed intermediate the openings 50, 52 and being coaxially.'-

aligned therewith.

.One end of a second vertically elongated substantially rectangular cover or face plate` S5 is formed with an` aperture which receives therethrough the other threaded end of the guide sleeve -42 proximate the outer side 56 of' the stile'12 and rests thereagainst. The other end of l the plate 55 is formed with a second aperture 58 (see:

Figure 3) which communicates with. the bore-40 and is` substantially coaxially aligned therewith.

Reference numeral 60 indicates an elongated substan-:ftially hollow cylindrical collar having a pair of opposed' '.Vopen ends of which oneis internally threaded Aforgth'readcd.`

latch keeper` engagement with the threaded end of the guide sleeve 42 proitimate the side 46""ofv' the stile 112, and is tightened against the vface plate 44. Tofacilitate the tightening, the

otherend of the collar is. .providedwith a pair ofidia-.M

metrically opposed' inwardly extending slots 62v to receive atool (not shown) therein.. A. secondelongatedfsubstantially hollow cylindrical provided-.With.a.

pair of opposed openendsgcf-V which.. one is internally threaded for threadedconnectiornwith.the ,.other. endi ofthe guide sleeve 42 .proximatetheside56 of the stile `12, and'is tightened against thefceplateeSS. As before, the other end'.of the collar.;64.lis.provided. with apair. of

diametr'ically opposed '.inwardly, "extending slots.. 66. (only one being shown-)Q to.. facilitate. the; tightening thereof'.

against the faceplate. 54.'`

An elongated; substantially .cylindrical ,door-,latch orb olt operating lshaft .68. (see Figure 8.). is: .mounted for.- recipro.

cation within sleeve `42 .and zthe .opposed ends thereof. vproject beyond .the remotely`- positioned, ends .-.of the collars 60,64. As is seenv in-FiguI.es2,and, 5., the.- opposed .ends `of. the. shaft 68. are positioned .in coaliiallyV spacedrelationrelative tothe collars 60,- 64.

latch v.operating knobs 74, y765 respectively.

bores. 82,- 8'4 whichreceivescrews. 86, ;88-.that tangentially. engage `A.the shaft., 68 in the grooves. y.70; 72 .to releasablys secure. theaknobs .74, 76 thereto.

One., end` of. agpair of:A elongated @substantially hollow'.

cylindricalfcollars 90,Y 92 arexedlysecured'to-the1re1` duced.. necks 78, 8.0, respectively, and-thee other;` ends thereof ,are telescoped for reciprocatiouv over the other;

or...outer ends ofthe col1ars60, 64, respectively. To,v servea: functionto be described the outer ends of the necks 78; 80. have secured thereto-a.- pain of rubber or.,

resilient washers 94,1` 96, respectively, which` cxtendibetweenthe shaft 68-and the collars 90, 92. As. is seenini.

Figures- Zand 5, a helicoidal `spring 93.under compression;

'surrounds onel end of the shaft 68fwith; one'of-itsends` abutting against. the threaded end fof-the guide sleevel 42. adjacent the -side `46,1015` the .stile 12, and the other end of,

the spring engages against the washer 94, whereby-the.

shaft; .68. is1constantly biased for. movement. infaf-.traction awayfrorntheside46;

To serve .a v.purpose to be set. forth-below; the shaft; 68,

intermediate vits ends,. is` formed with an, undercut orf-fA axially extending recess` 9 8 (see Figures. 3 and 8) which-isi-V in.jopen, communicationwith. axdownwardlyopening;-

groove100 Athat extends transversely throughth'efshaft:68:;` at.. an,v acuteangle` withr respect to its: longitudinalA axis.j

Theftshaft 68 is also -forrned-v with 'al-.downwardly facingiv` socket' 1.02l which serves, a; function. to; bedened;A theaA socket-'102.heing located intermediatetherecess-598 and;


Referencenumeral 10.4 `indicates anelongatedysubstanf. tially; hollow cylindrical; guide member -liavingff-a"v cutout extending" between.. the points 104A,v 104B .at`v oneend` thereof.;` (see. Figurew 4). leaving Y an upwardly z open end. sectionY .,10'4C. The other'end.` of thev guide.membe1;.is.;` externallyfthreaded at:104D..ancl adjacent tothe threadedA end is provided an arcuately shaped laterallyfr projecting;

bracegelement V106. At one'side and. intermediate.y the stop element-'106 andthe threaded end I104D the: guidef memberg104 has formed-'thereinaslot 1085 (seefEigures.

2;. 5'fand,;6) As is seen'in theLdrawings;the-1guidemerrrberM 104-haer aapair of? -dametrically opposed. parallelftopfgand bottcn'r keyways': 110,. 1121 formed therein-- whicltxare-` aligned?.with' the lateral slot 108.

connected by an arcuate end member 120, and their respective other pair of adjacent ends integrally connected by an arcuate end member 122 which terminates in a centrally located abutment ele-ment 124 having an outwardly facing concave face 125. The end member 12) carries an inwardly projecting latch 126, the function of which will ibe explained: below. The arms 116, 118 and end members 120,122 define an elongated substantially rectangular opening-1128@ having a longitudinal length greater. than: the. diameter` of. the;V guide` .104 to serve a function tobe.described-below. As is seen in Figures 2, 5 and 6, the yoke 1114 is slidably mountedon the guide 104"with the-arms116, 1=181engaging the keyways 110, 112 andi-With the flatchlily slidably engaging Within the slot 108.

One end of a leaf spring 12-8 is riveted to the guide 104 at 130 and the other end thereof is xedly connected tothe. .end ,member 122 of theyoke 114, thearran gement beingsuch. that the, yoke 1 14. isr constantlybiased for., movement in; the direction for ,effecting entry. ofthe latch 126 t into the opening 108..

A cover plate 132 having an internally threaded open;

ing is threaded. .0n the threaded' end, 104D,.ofthe guide 104. and. is; formed, with. an inwardly. projecting convex.- boss..134 disposedUin confrontingrrelation withrespect to-n the-concave face1126-ofthe latch 124. As Aisseenin the drawings, 'thecoverv plate 132 includesv upper. and lower flanges 136, 138 (see Figure 4) which are seatedintlne. rabbeted marginal, edge36. The ,..anges.136,. 138.are

secured ,to the vstile; IZ-bymeans-ofscrews .140; latchfor-,bolt142.(see1-Figure 9) havinga.sub stantially cylindrical ,configuration isfrnountedfor recipro cation .withinA the guide 104. Thedoor latch orqbolt- 142A atone end thereof is formejdwithan upwardly facing. cutout 144- which .includes-atongue.extension 146, across,.-. which. extends, atan acute 'angle-with respecttoits longi tudinalaxisa raised ribg148. It will behnoted thatzthe... angle of inclination of the rib 148 is the same. as the. angleofr-` inclination-ofthe `groove 100. Theother. end ofthe` bolt.;142,terminatesg inan inclined face-150ir and. immediately adjacent thereto the bolt 142is provided with.. a socket 152.

The .above described guide-104, yoket114'assemb1y and; bolt 142 are-inserted, into theY boreY 116 untily the stop element 10d-,engages and, seats.- against 1 the shoulder. 20.v

In;this-,;position the. cutout section 104C extendsthrough An elongated openv substantially rectangular-yoke. isl

indieatedatl1114.".-and'is` seen tocomprise a `pairof` longitudinellyfl'extendingf substantially; rectangular 11.161,.v

the recess 98i withgthe.- longitudinal axis of the guideltlt. disposed Aat fright, angles with respect tothe longitudinal, axis of the shaft 68. Thetongueextension 146 extends.A below .thecutout section l104C with the rib 148; entering .the

groove100Y at onerend thereof The; leaf spring. l12,8...isrn positioned in the cavity18, the yoke 114 isreciprocabled within the slot 22 andi passage Y.32; and the socket.- 1.52,.. ofthegbolt;142,is.adapted for movementfintoand out of registry with the slot- 108.v

An elongated latch,` lever 15,4-is-mounted for recprocas?. tion f.withinthesemi-circular recess 38. 'Ilhe upperz end of` the lever; 154, aswillbe explained lbelovviszaclaptedf;y forreciprocationthrough theopening 50 and for exten. sion; into vthersocket 102,to hold Athe shaft 68 against ref.. ciprocable moverneilt4V within ,the` guide sleeve` 42.-. The?. lower. end Vofthe-.leverv -154 is aperturedat 155; to vnaceive therein acylindrieal insert-156I wh ich,;isY eccentricallyv threaded on a stern 158- of-afmanuallyojserable.A key 160,;VA thepstemfl 158;; extendinga transversely through theffaee plateeSS.; As` is:v seen in Eigure, thevinsert,156fdoes;4 not occupy the entire aperture whereby roornis,A prof. vided: thereinto.v receivetheiL cylindrical ,end 161; of'a tumblenbolt 16.2. cx'nnprisingj a part` of; aV tumbler-doclet; 1614; the end-1611 beingsfoisetf with; respect; to theflon tudinal axis of the bolt 162. The lock 164 is conventional.; in allgother[respects` and includes the/barrel l'whiehgis disposed? Withinthe boresy 4.01` and fh as;its jouterj ,end'Xed-ly ll'hvig onepairr'ofii adjacent ends.'y thereofintegrally; 75 securedrtm faceplate.; 4.4;. Assembly. bolts:-` 168". (sees` Figure 1) also serve to maintain the barrel 166 in its respective position.

A door jamb is indicated by reference numeral 170 and has set therein a door latch or bolt keeper 172 which comprises a substantially rectangular face plate 174 (see Figure 7) having a circular expressed portion 176 through which extends a Phillips bolt 178 in oli-center relation with respect to the center point of the expressed portion 176. As is seen in Figure 7, the head 180 of the bolt 178 is formed with `an larcuate recess 182 which cooperates with the outer end of the bolt 142 to hold the door in its closed position (see Figure 2). The plate 174 is secured to the jamb 170 by means of conventional screws 184. A second Phillips screw 186 is inserted into the jamb 170 and the longitudinal axis thereof is substantially perpendicular to the longitudinal axis of the screw 78. The screw 86 is so positioned that its enlarged head 188 is in the swinging path of movement of the abutment element 124 (see Figure 2). A rubber cushion 190 is inserted between the jamb 170 and the screw head 188 to prevent clothes from being caught thereon.

Having described the component elements of this invention in detail its operation becomes manifest from an inspection of Figures 1 to 4, inclusive, which illustrate the latching member or bolt 142 in its operative, extended, or locked position. With the several elements in their respective illustrated positions and assuming that it is now desired to open the door 10, the operator first turns the key 160 to effect rotation of the insert 156 which, in turn, causes the downward movement of the lever 154 to effect the withdrawal of its upper end from the socket 102. The same downward movement of the lever 154 may be achieved by insertion of a key (not shown) into the tumbler lock 164 to effect a turning movement of the offset cylindrical end 161 of the tumbler bolt 162.

With the lever 154 withdrawn from the socket 102, the operator now presses inwardly on the knob 74 or pulls outwardly on the knob 76, both movements taking place against the force of the spring 93. This produces a sliding movement of the shaft 168 downwardly (as viewed in Figure 2) and assumes the position illustrated in Figure 5. In so moving, the rib 148 slides within the groove 100 from its position of Figure 2 to its position shown in Figure 5. The rib 148, as it shifts between its positions shown in Figures 2 and 5 causes the bolt 142 to move laterally to the left from its position shown in Figure 2 to its retracted unlocked position illustrated Iin Figure 5. This frees the outer end of the bolt 142 from behind the head 180 of the bolt or screw 178 and eiects alignment of the socket 152 with the slot 108. Now, as the door 10 is swinging to its open position, the abutment element 124 escapes from the bolt head 188 and, under the inuence of the leaf spring 128, the

yoke 114 is forced to move in such direction as to pass the latch 126 into the socket 152. Under these conditions the holt 142 is retracted and is held against further movement (see Figure 5).

Now let it be assumed that it is desired to close the door 10. As the operator swings the stile 12 into the door jamb 170 the abutment element 124 engages against the head 188 of the screw 186 forcing the yoke 144 to move in the opposite direction and to effect the withdrawal of the latch 126 from the socket 152 against the tension of the leaf spring 128. Substantially simultaneously therewith, the tension of the helicoidal spring 93 yacts against the knob 74 causing it to move from its position shown in Figure 5 to its position illustrated in Figure 2. This, in turn, causes the rib 148 to shift from its Figure 5 position to its Figure 2 position and eects movement of the bolt 68 from its retracted inoperable position to its extended operative position with the outer end thereof disposed in locked position in the recess 182.

The key lis now rotated in the reverse directionto elevate the lever 164 to project the upper end thereof into engagement with the socket 102, or the same may be accomplished by rotating the tumbler bolt 162 by means of a key (not shown).

By providing the opening 52 in the guide sleeve 42, the entirel latching mechanism may be reversed from left to right as viewed in Figure 3.

Having described and illustrated in detail one embodiment of this invention, it will be understood that the same is otered merely by way of example, and that the present invention is to be limited only by the scope of the appended claim.

What is claimed is:

A door locking device comprising a cylindrical guide sleeve extending transversely through a door stile adjacent an end thereof and having its opposed ends projecting on opposite sides of said stile, said guide sleeve having a downwardly facing opening formed therein intermediate the ends thereof, a hollow cylindrical collar for each end of said guide sleeve, said collars having one of their respective ends ixedly connected. to their respective associated ends of said sleeve and said collars projecting away therefrom in coaxial alignment therewith, an elongated substantially cylindrical door latching bolt mounted for reciprocation through said end of said door stile and being reciprocable transversely through said opening formed in said guide sleeve, said bolt having an axially extending upwardly facing cutout adjacent an end thereof, a substantially straight angled rib integral with said bolt and disposed within said cutout, said rib extending transversely across said bolt and. at an acute angle with respect to the longitudinal axis thereof, a reciprocable latching bolt actuating shaft slidably mounted in said guide sleeve and having the ends thereof projecting beyond the remotely disposed ends of said collars, said shaft having a downwardly facing recess formed therein intermediatae its ends and disposed in confronting relation relative to said cutout with the axis of said shaft being perpendicular to the axis of said bolt, said shaft having a substantially straight angled groove formed therein opening into said recess to receive said rib, said rib and said groove Yextending transversely across said bolt and said shaft at substantially identical acute angles with respect to the longitudinally extending axes of said bolt and shaft whereby actuation of said shaft in one direction effects retraction of said bolt into said stile and actuation of said shaft in the opposite direction effects extension of said bolt out of said stile, said. rib slidably engaging opposed confronting sides of said groove as said bolt and shaft are reciprocated, a collar mounted for reciprocation on each one, respectively, of said rst collars, a door knob txedly secured to the remotely disposed ends of said reciprocable collars, and a helicoidal spring surrounding one end of said shaft and having an end thereof engaging one of said knobs and its other end engaging the adjacent one of said first collars whereby said shaft is constantly biased for movement in a direction to force extension of said bolt out of said stile.

References Cited in the le of this patent UNITED STATES PATENTS 144,931 Stowe Nov. 25, 1873 228,323 Crandal June 1, 1880 361,247 Winchester Apr. l2, 1887 618,708 Merwin Jan. 31, 1899 659,887 Crouch Oct. 16, 1900 1,565,212 Sillick Dec. 8, 1925 1,956,098 Jacobson Apr. 24, 1934 2,186,666 Cereda Jan. 9, 1940 2,521,111 Ylinen Sept. S, 1950 2,726,889 Lawson Dec. 13, 1955 FOREIGN PATENTS 225,523 Switzerland May l. 1943

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US144931 *Sep 27, 1873Nov 25, 1873 Improvement in door-latches
US228323 *Mar 8, 1880Jun 1, 1880 Geoege l
US361247 *Apr 12, 1887 Latch
US618708 *Aug 31, 1898Jan 31, 1899 Latch
US659887 *Jun 15, 1900Oct 16, 1900Walter A CrouchKnob-latch.
US1565212 *Feb 11, 1925Dec 8, 1925James SillickLatch
US1956098 *Oct 5, 1933Apr 24, 1934Axel Jacobson ErnestDoorlatch
US2186666 *Oct 7, 1938Jan 9, 1940Cereda Jose AurelioMechanism for operating locks, latches, and the like
US2521111 *Jul 6, 1946Sep 5, 1950William YlinenDoor lock
US2726889 *Jul 24, 1952Dec 13, 1955Melpar IncLatch
CH225523A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3330341 *Dec 6, 1965Jul 11, 1967Rockwell Mfg CoRemotely positionable and removable wellhead connection and sealing apparatus
US5157953 *Sep 24, 1990Oct 27, 1992Hung Sheng HuPush and pull type cylinder lock
US5577780 *Jul 25, 1995Nov 26, 1996Justice; TerryPush/pull latch assembly
US6926315 *Jan 29, 2003Aug 9, 2005Hardware Specialties, Inc.Push pull latch bolt mechanism
US7607704 *Jan 26, 2005Oct 27, 2009Hardware Specialties, Inc.Push-pull latch bolt mechanism
US7871112 *Mar 3, 2005Jan 18, 2011Hardware Specialties, Inc.Reversible double deadbolt mortise latch
US9145719 *Sep 5, 2012Sep 29, 2015Milocon Inc.Apparatus for a door latch
US20040145190 *Jan 29, 2003Jul 29, 2004Kondratuk Michael W.Push pull latch bolt mechanism
US20050151380 *Jan 26, 2005Jul 14, 2005Hardware Specialties, Inc.Push-pull latch bolt mechanism
US20060208496 *Mar 3, 2005Sep 21, 2006Hardware Specialties, Inc.Reversible double deadbolt mortise latch
US20080314096 *Aug 17, 2005Dec 25, 2008Jong Il KimDoor Lock
US20140361552 *Sep 5, 2012Dec 11, 2014Wayne HartfordApparatus for a Door Latch
U.S. Classification292/170, 292/333
International ClassificationE05C1/00, E05C1/14
Cooperative ClassificationE05C1/14
European ClassificationE05C1/14