US2732703A

US2732703A - noregaard

Info

Publication number: US2732703A
Authority: US
Publication date: 1956-01-31
Anticipated expiration: 1973-01-31

Description

Jan. 31, 1956 M. J. NOREGAARD DOOR LOCK 2 Sheets-Sheet 1 Filed Sept. 9, 1952 TV Um I.

INVENTOR. Ma urice c7: Nore q'ac1 rd Jan. 31, 1956 M. J. NOREGAARD DOOR LOCK 2 Sheets-Sheet 2 IN V EN TOR. 1"1' as t]: Nor-85a or d BY I Mau E @w Iv Filed Sept. 9, 1952 YN vw VV// /j United States Patent 9 DQOR LOCK Maurice J. Noregaard, Los Angeles, Calif. Application September 9, 1952, Serial-N0. 308,680 Claims. (6]. 70-211) This invention relates to mechanical door locks and more particularly pertains to door locks of the class having a spindle engageable by a locking pin for preventing the rotation of the spindle.

It is a primary object of this invention to provide a mechanical door lock operable by a key in the form of a fiat fibrous card.

Another object of this invention is the provision of a mechanical door lock applicable particularly to the doors of apartment houses, hotels and homes as well as to those of club rooms and club buildings. In the latter case, the lock may be operated by means of'the membership cards of the club.

It is. another object of this invention to provide a door lock wherein the spindle .of-the doorlatch may be locked, thereby eliminating the necessity of: providing a separate locking member.

Still another object of this invention is: theprovision of a mechanical door lock which is simple. inconstruction and attachable to a variety ofdoor latch assemblies.

The manner in which the foregoingandother objects of, this invention are accomplishedwill be apparent from the following specification and claims considered together with the accompanying drawingwherein-v like; numerals of-reference indicate like parts, andwherein;

Fig. l is a sectionalview in side elevation, illustrating the presently described-door-lock inits lockedposition;

Fig. 2 is a view similar tQFig. 1, illustrating the lock in its unlocked position;

Fig. 3- is, an enlarged view, ofthe presently desciibed loch mechanism in the position. of. Fig. l; and

Fig. 4 is an enlarged view of the. presentlydescribed lock mechanism in the positiomofFigJZ.

As. is illustrated in thedravvings, the doorloclc; ofgthis: invention is applicable -to agdoon- Mtg-which may afford; access to anapartment, hotel. room, or. dwelling, or to,

quarters; occupied by a club, the mem ers of which are prcndded with membership: cards. The door is-operated: by means of a, latch. bolt. 1 2.com;ectedthrough latch. bolt? retracting means, 14: to. an interior. spindle.,-16 and an. ex? tenor-spindle 18; The latter are. attached in turn. to door knobs 2t and. 22: respectively. A pair of; escutcheon,

plates

24, 26 may alsobe. included. This assembly-maybe of substantially conventional, construction; theflatch bolt retracting means being; ottheclasspermitting the-zbolt: to I be, operated independently by, the interiorand exterior-,- Any oneof-amember. of suchretracting-means: currently on the. market thusis adaptable. to thepurposesv spindles.

of thepresent invention To. adapt a conventional door and. latchvbolt assembly for. use. in this invention, one. of the spindle members, usually theexterior spind1e,18, ist-provided Wlth"a.tIaIflS- verserecess ztlonits underside. Also, the.door 1s-.pr.o

vid ed. With. alongitudinal rece ss .30,. a transyerselborin g. 32..communicating. with. recess. 31!, and -atransverse. opeming, an, also communicating, with. tecessi30... Qnposite.

. as. n 4 s. a o z n a lqtqfl htqu h esqutshwa;

Plate. 6-

Stationed Within recess 30 is-the lockingping lllzextending substantially perpendicular to. spindle 18 and positioned for retractable penetration,of:recess. 28-, therein. The upper end of the locking pin, is guided;by;means..of sleeve 42. Its lower end-penetrates and is guided by:an opening in a non-magnetic housing.44.contained inthe transverse opening 34.

Manual reciprocation of locking; pin, 40} may. be. achieved by means ofa locking pin. extensionflfi attached to the locking pin at about its midapoint and lyingl transverse boring 32. The outer endof this extensionpenm trates an opening48 inescutcheon p1ate .24; and is..fittegl with a guide plate 50in sliding contact with the escutcheon: plate. A. head 52 is. provided on the outer. end of;the.exr tension so that by suitable maniuplationof the same.the locking pin may be re-inserted'in recess.;28' in spindle1-8; after each unlocking operation.

Means are provided, however, for normally urgingthe; locking pin in the direction of Withdrawal from the recess. In the illustrated embodiment such means comprisethe spring 54 compressed between sleeve 42. anda projection: extending outwardly from locking, pin 40.

Means also are provided for opposingthe withdrawing action of spring Stand for maintaining thelocking pin. within recess 28 when it is desired to lock thespindle. against rotation. Such means comprise the abuttingpin or post 56. The latterpin is threadedinto orotherwise alfixed to slidable lockingmeans comprising a. locking plate on slidably mounted for longitudinalreciprocation, within housing 4-4. Thus plate 60'may be-stationed 'inthe retracted position. of Fig. l; whereinisupportingpin 56, underlies and supportslockingpin 40' Within recess. 28 Alternatively, it may be moved to the advanced positiom of Fig. 2 Whereinpin Soho-longer underlies-andsupports: locking pin 40.. The latter, urged both. by gravity; and by spriug54, thereupon is withdrawn fromrecess-lll;

To urge lockingplate 60 normally in the direction of its retracted station, resilient means are. provided in the. form of a spring 62 mounted on the lower member of L housing 44 and contained withinthe housing extension 64. Spring 62- is stationed intthe path. of" movement of plate 69 and normally bears against the? same. Hence it resiliently opposes theadvancingtmovementgof theloclo; ing plate and willreturn it to.itsretracted positiorrwherr the moving force is withdrawn.

Lock means are provided for locking-ythelecking plate in its retracted position underlying locking pin 40 and hence locking spindle 18. In the illustrated form, the lock means comprises a plurality.of'cylindrical magnets 66, as, ill-and 72-.stationed Withintransverse openingsinr: lockingplate oiland arranged, in a predetermined pattern; The locking plate and the magnetsjwhich: itcarriesare sandwiched between a painof nonamagnetic perforatedplates 74, 7%. These serve as guides for;the reciprocativiemovement ot lockingplate-fit) and alsouas, stops: for .op=- posing the motion of-thesame, dependingnponxtheposi tionof the magnets.

Thus upper-plate. 74 has therethrougha plurality :of! perforations 76; '78, ilandrififopposite the .openings in plate on which house magnetsfifi; 68; 7(l and=72respectively. Selectedones ofth'e-openings, for example, openings-76 and iii) have a diameter just sufficiently, large :tou accommodate the ends of the. corresponding;magnets However, others of the openings, for example, openings; '73 and 32 are sutiiciently, large to permit'a, restricted lateral movement of the magnet {when inserted; therein,

Similarly, the, lower plate. 75. carries; a correspondin g; pattern of perforations. as, 86, seam-90,. Howey/er, in; this case perforations 84 and 88.,oppo-site:rnagnetsfi and, 7t respectiyelyare enlargemwhereas;openingsflfi and 9tl opposite magnets 68 and T72;: 'respec t ively,are restricted in; i me e osl ht mq q h had anie er. tthem anets. A shield plate 92 underlies plate 75 and the magnets for protecting the latter and assisting in retaining them in place.

The magnets are further located within the locking plate by means of a plurality of opposing

magnets

94, 96, 98 and 100 respectively. These are housed in transverse recesses in a lower non-magnetic housing plate 102 which is adjacent the lower housing member 44.

Magnets

94, 96, 98 and 100 are so arranged as to repel the corresponding

magnets

66, 68, 70 and 72 in the upper section of the lock means and tend to urge them normally upwardly in the direction of the upper housing member Thus it will be apparent that

magnets

66, 68, '70 and 72 serve as locking pins when in the position of Figs. 1 and 3, since they are forced upwardly until they extend through the perforations in plate 74 by the force of the magnets opposite them in the lower section of the assembly. In this position they oppose advancement of locking plate 60 toward the rear of the housing, for when such movement is attempted

magnets

66 and 70 will engage plate 74.

Retraction of

magnets

66 and 70 may be eifectuated, however, by use of a properly constructed key 104, thereby permitting advancement of locking plate 60 and unlocking of the spindle. A suitable key is illustrated in Figs. 2 and 4. It comprises an elongated member fabricated principally of non-magnetic materials. It preferably is in the form of a card, for example, a club membership card, made of a plurality of plies of paper and having therein a pattern of

magnetic elements

106, 108.

Elements

106, 108 may be fabricated, for example, from pliable shim steel and hence are undetectable by ordinary inspection methods. Cord 104 and the magnetic elements sealed therein are dimensioned and arranged so that the latter will lie adjacent the magnets which are actively locking the locking plate (i. e. magnets 66 and 70) when the key is fully inserted through slot 36 into a keyway 110 separating the lower magnet housing plate 102 and the upper shield plate 92. Thereupon the magnets are withdrawn from

perforations

76, 80 in perforated plate 74- and locking plate 60 is released for movement to the position of Fig. 2.

The motive power for shifting the position of the locking plate may be supplied by the key itself. T this end the locking plate is provided with an extension or abutment 112 which extends across the keyway. Hence, inward pressure exerted upon the key will be transmitted to the locking plate which is moved inwardly, but against the tension of spring 62.

Operation As has been noted above, the presently described lock apparatus is particularly designed for use in locking and unlocking the doors of hotel rooms, apartments, homes, and club rooms. In these applications, the door is fitted in the manner indicated in the drawings with locking pin 40 operating in a recess in the exterior spindle 18 and locking pin extension 46 extending through the inside face of the door. Latch bolt 12 is operated through the retracting means indicated generally at 14, independently by spindle 16 or by spindle 18 connected respectively to the inner and outer door knobs 20 and 22.

The lock normally is maintained in the position of Fig. 1 with locking pin supported by pin 56 and extending into recess 28 in the exterior spindle. When it is in this position, persons on the inside may open the door at will by turning knob 20.

However, when a person wishes to enter from the outside, he must first withdraw locking pin 40 from the exterior spindle. He accomplishes this by inserting card 104 into keyway 110 until its inner end contacts abutment 112 on locking plate 60. 7

When the card is in this position, the

magnetic shims

106, 108 concealed therein are stationed in registry with locking

magnets

66 and 70. The latter are attracted by the shims and withdrawn from perforations 76, in plate 74. Hence pressure of the card against the abutment will force the locking plate to the advanced position of Figs. 2 and 4 against the resilient force of spring 62.

In this position supporting pin 56 carried by the locking plate is withdrawn from beneath the lower end of locking pin 40 which therefore gravitates downwardly, assisted by the tension of spring 54-. in this manner it is withdrawn from recess 28 in the spindle and the door may be opened from the outside.

After the door has closed, it may again be locked from the inside by moving the locking pin extension 46 upwardly by means 0 knob 52 until it again is inserted in recess 28. When this has been done spring 62 pushes locking plate 60 to its retracted position with supporting pin 56 again underlying and supporting locking pin The door then remains locked until again opened by means of the proper key.

If an improper key is used, for example, a card containing no magnetic elements, it will be obvious that the magnets in the lock will remain ineffective and the door will remain locked. Moreover if a knife blade or other instrument made of magnetic material is inserted in the keyway, all of the magnetic pins will be attracted. in this case, however,

magnets

68 and 72 will be drawn into openings 86 and 90 in plate 75. Because of the small dimensions of these openings, the magnets will be held securely against lateral movement and the door will remain locked.

It is to be understood that the form of my invention herewith shown and described, is to be taken as a preferred example of the same, and that various changes in the shape, size and arrangement of parts may be resorted to, without departing from the spirit of my invention or the scope of the subjoined claims.

Having thus described my invention, 1 claim:

1. A lock for doors and the like comprising a latch bolt adapted to be extended from an edge surface of the door, latch bolt retracting means connected to the latch bolt, exterior and interior door knob spindles connected to the latch bolt retracting means for separate operation of the latch bolt, the exterior spindle having a transverse recess therein, a locking pin positioned substantially perpendicular to the exterior spindle and mounted for retractable penetration the recess therein, a sleeve stationed adjacent the exterior spindle and slidably receiving one end of the locking pin for guiding the same, a locking pin extension extending laterally of the locking pin through the inner side face of the door for manual insertion of the locking pin into the spindle recess, a guide plate on the other end of the locking pin extension and in sliding contact with the inner side face of the door, first resilient means connected to the locking pin for urging the same in the direction of withdrawal from the spindle recess, a lock housing adapted to be stationed within the door adjacent the door knob spindle and having a transverse opening and a longitudinal keyway extending therein, the other end of said locking pin being slidably received in and guided by the transverse opening, a locking plate mounted substantially parallel to the keyway in the housing for longitudinal reciprocation therein between advanced and retracted positions, said locking plate having thereon an abutment extending across the keyway for contact by a key inserted therein, a supporting pin extending outwardly from the locking plate in the direction of the locking pin, second resilient means within the housing and bearing against the locking plate for maintaining it normally in its retracted position wherein the supporting pin supports the locking pin and maintains it in the spindle recess, and lock means engaging the locking plate for releasably locking it in its retracted position pending unlocking by said key, the pressure of the key on the locking plate abutment moving the locking plate to its advanced position wherein the supporting pin no longer supports the locking pin which, accordingly is withdrawn by the firstresilient 'meansfjrom thespindle; recess, releasingthelatchbolt:

2.- A lock fordoors fitted with a latch-bolt-operating spindle having therein a transverse recess; said lock-comprising: a,loc king, pin positioned' adjacent; the spindle for retractable penetration of the recess therein, a; locking pin extensionextendingflaterally -from the- -1ocking pin-and operable manually toinsertthe-locking pin into the, recess, first' resilient" means connectedjto the locking pin for urging thesame in the direct-ion of withdrawal from the recess, a=lockhousing adaptedto be stationed adjacentthe spindle-andhaving a-transverse opening and a keyway extending thereinto, one endoflsaid" locking pin being slidably receivedin the transverse. opening, a locking: plate, mounted substantially parallel to the keyway in the housing'for longitudinal; reciprocation between ad-' vanced-and retracted positions, the locking plate haying thereon an abutment extending across the keyway for contact by a key inserted therein,,a supporting pin extending outwardly from the locking plate in-the direction of the locking pin; seeondiesilientmeans-within the housing andbearing against the locking plate for, maintaining it normally in its retracted position wherein the supporting pin: supports the locking pin, and 'lockmeans engagingthe locking plate for releasably locking the same in its retracted position pending unlocking by the key, thereby permitting movement of the locking plate by the key against the force of the secondresilient means to its advanced position wherein the supporting pin does not support the locking pin which accordingly is withdrawn by the first resilient means from the recess in the spindle, releasing the latch bolt.

3. A lock for doors and the like fitted with a latch bolt spindle having a transverse recess therein, said lock comprising: a locking pin positioned below the spindle for retractable penetration of the recess therein, a locking pin extension extending laterally from the locking pin for manual adjustment thereof with respect to said recess, a lock housing stationed below the locking pin and having a transverse opening and a keyway extending thereinto, the adjacent end of the locking pin being slidably received in the transverse opening, a locking plate mounted substantially parallel to the keyway for longitudinal reciprocation between advanced and retracted positions, said locking plate having thereon an abutment extending within the keyway for pressure contact with a key inserted therein, a supporting pin extending upwardly from the locking plate and normally supporting the locking pin, resilient means within the housing bearing against the locking plate for maintaining the same normally in its retracted position with the supporting pin underlying the locking pin for maintaining the same inserted in the spindle recess, and lock means engaging the locking plate for releasably locking the same in its retracted position pending its unlocking by insertion of the key in the longitudinal opening.

4. A look for doors fitted with a latch bolt and a spindle having therein a transverse recess, said lock comprising: a locking pin positioned adjacent the spindle and mounted for retractable penetration of the recess therein, guide means for guiding the movement of the locking pin, a locking pin extension extending laterally of the locking pin for manual insertion of the same into the recess, means associated with the locking pin for urging the same in the direction of withdrawal from the recess, a locking member mounted adjacent the locking pin for reciprocation between advanced and retracted positions, the locking member having thereon an abutment, a supporting pin extending outwardly from the locking member in the direction of the locking pin, resilient means bearing against the locking member for maintaining the same normally in its retracted position wherein the supporting pin supports the locking pin within the recess, and lock means engaging the locking member for releasably locking the same in its retracted position, the locking member being shifitable by pressure of akey on the abutment thereon into its advanced'position wherein; the supporting pin is withdrawn: fromcontact w-itlrthe locking p in, withdrawing the latter-from therecess and releasing the latch bolt.

5-: A; loclefor doors proyidedwith a lat'chbolt-operate ing spindle having a transverse recess therein, saidflock comprising; a lockingpin positioned adjacent the, spindle:andmounted-'-for retractable penetration ofthe, recess therein, meansconnected with the locking pin for manual insertion of;th'e same into therecess, means connected; to the, locking pin for normally urging the same in the direction of,withdrawal' from said recess, a locking member mounted for reciprocation between advanced and retractedp ositions and'having thereon contact-means positioned for contact by a key, a support member; ex,- tending outwardly from the locking memberv in the direction on the locking pin, resilientmeans bearing against the-locking member for maintaining the same normally in its retracted, position wherein the support member supports the locking pin inserted" in the spindle, and lock means engaging the lock member for releasably locking the same in its retracted position pending its unlocking by means of thevkey, the key being; thereupon further operable to move thelock member to its ad vanced position by; pressure contact with the contact means thereon against the resilient force ofthe resilient means, thereby removing the support member from beneath the locking pin and permitting withdrawal of the locking pin from the recess in the spindle.

6. A lock for doors provided with a latch-bolt-operating spindle having a transverse recess therein, said lock comprising: a locking pin positioned adjacent the spindle and mounted for retractable penetration of the recess therein, means connected to the locking pin for manual insertion of the same into the recess, a locking member mounted for movement between advanced and retracted positions and having thereon contact means positioned for contact by a key, a support member extending outwardly from the locking member in the direction of the locking pin, resilient means bearing against the locking member for maintaining the same normally in its retracted position wherein the support member supports the locking pin inserted in the spindle, and lock means engaging the locking member for releasably locking the same in its retracted position pending its unlocking by means of the key, the key being thereupon further operable to move the lock member to its advanced position by pressure contact with the contact means thereon against the force of the resilient means, thereby removing the support member from beneath the locking pin and permitting withdrawal of the locking pin from the recess in the spindle.

7. A lock for doors provided with a latch-bolt-operating spindle having a transverse recess therein, said lock comprising: a pin positioned adjacent the spindle and mounted for retractable penetration of the recess therein, means connected to the pin for manual insertion of the same into the recess, a locking member mounted for movement between advanced and retracted positions and having thereon contact means positioned for contact by a key, a support member extending outwardly from the locking member in the direction of the pin and normally supporting the pin inserted in the spindle, and lock means engaging the locking member for releasably looking the same in its retracted position pending its unlocking by means of the key, the key being thereupon further operable to move the lock member to its advanced position by pressure contact with the contact means thereon, thereby removing the support member from the pin and permitting withdrawal of the same from the recess in the spindle.

8. A lock for doors fitted with a door latch and comprising latch engaging means positioned adjacent the latch and mounted for releasable locking engagement therewith, a locking member mounted adjacent the latch engaging means for movement between advanced and retracted positions and having thereon contact means positioned for contact by a key, the locking member serving as an abutment for the latch engaging means, and locking means engaging the locking member for releasably locking the same in its retracted position pending its unlocking by means of the key, the key being thereupon further operable to move the locking member to its advanced position by pressure contact with the contact means thereon, thereby removing the locking member from the latch engaging means and permitting the dis engagement of the latter from the latch.

9. A lock for doors fitted with a door latch and comprising latch engaging means positioned adjacent the latch and mounted for releasable locking engagement therewith, locking means mounted adjacent the latch engaging means and comprising a pair of transversely perforated plates, one of which is movable relative to the other, the movable plate serving as an abutment for the latch engaging means and having thereon contact means positioned for contact by a key incorporating a magnetic element, the perforations in the plates being arranged in opposed pairs, and movably mounted in at least one of said pairs of perforations a magnet which normally interlocks the plates but which is adapted upon being approached by the magnetic element in the key to be withdrawn from the perforations in one of the plates, thereby permitting the relative movement of the plates and disengagement of the latch engaging means from the latch upon pressure contact of the key with the contact means on the said first plate.

10. A lock for doors fitted with a door latch and comprising latch-engaging means positioned adjacent the latch and mounted for releasable locking engagement therewith, a pair of relatively movable plates having therein at least one pair of opposed recesses, one of the plates serving as an abutment for the latch-engaging means, and, movably mounted in said pair of recesses, a magnetic element normally positioned for interlocking the plates but adapted, upon the approach of a second magnetic element, to be withdrawn from the recess in one of the plates, thereby permitting the relative movement of the plates and the disengagement of the latch-engaging means from the latch.

References Cited in the file of this patent UNITED STATES PATENTS