US2233699A - Safety lock means for cabinets - Google Patents

Safety lock means for cabinets Download PDF

Info

Publication number
US2233699A
US2233699A US363692A US36369240A US2233699A US 2233699 A US2233699 A US 2233699A US 363692 A US363692 A US 363692A US 36369240 A US36369240 A US 36369240A US 2233699 A US2233699 A US 2233699A
Authority
US
United States
Prior art keywords
door
catch
hand
pull
cabinets
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US363692A
Inventor
John E Gorrell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BATTLE CREEK SANITARIUM AND BE
BATTLE CREEK SANITARIUM AND BENCVOLENT ASSOCIATION
Original Assignee
BATTLE CREEK SANITARIUM AND BE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BATTLE CREEK SANITARIUM AND BE filed Critical BATTLE CREEK SANITARIUM AND BE
Priority to US363692A priority Critical patent/US2233699A/en
Application granted granted Critical
Publication of US2233699A publication Critical patent/US2233699A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B65/00Locks or fastenings for special use
    • E05B65/0014Locks or fastenings for special use to prevent opening by children
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S292/00Closure fasteners
    • Y10S292/37Push button operators
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S292/00Closure fasteners
    • Y10S292/65Emergency or safety
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00Closure fasteners
    • Y10T292/08Bolts
    • Y10T292/0801Multiple
    • Y10T292/0848Swinging
    • Y10T292/0849Operating means
    • Y10T292/0859Push or pull rod
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00Closure fasteners
    • Y10T292/08Bolts
    • Y10T292/1043Swinging
    • Y10T292/1051Spring projected
    • Y10T292/1052Operating means
    • Y10T292/106Push or pull rod
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00Locks
    • Y10T70/70Operating mechanism
    • Y10T70/7153Combination
    • Y10T70/7169Complex movement or puzzle type

Definitions

  • This invention relates to medicine cabinets, and has primarily for its object to provide means in connection therewith for sealing or closing at least a portion of the cabinet in a manner which is impossible to be opened by a small child, but can be readily opened by an adult, thereby enabling poisons or other materials or articles, particularly dangerous in the hands of small children, to be safely kept in a manner accessible only to adults.
  • a further object of the invention is the provision of a locking means for a cabinet door which will permit opening of the door only by the use of two hands of an adult size.
  • FIG. l is a perspective view of a cabinet embodying the invention, with the main door fully opened, and the supplemental door equipped with the invention is partially opened
  • Fig. 2 is an enlarged sectional detail of one of the door locking means.
  • I designates a cabinet suitable for the storage of medicines or the like, and being closed by a door 2.
  • This cabinet in the present instance, is provided interiorly with a compartment 3 which may have one or more shelves therein, and is closed by an auxiliary door 4 hinged to one side thereof, in the present instance, for swinging opening and closing movements. It is preferable to have the auxiliary door 4 so disposed within the cabinet with respect to the door 2 that a closing of the door 2 effects a closing of the door 4 should the latter be open.
  • the auxiliary door 4 is locked in closed position by two spaced catch members 5, 5, adapted to have locking engagement with respective stationary catch parts in the interior of the cabinet.
  • Each catch I is normally engaged with its stationary catch part when the door is closed, so 'as to retain the door in such position, the catch for such purpose preferably being of the spring actuated type.
  • Each catch 5 is individually controlled, in the present instance, by a push botton I projecting in exposed position without the front side of the door 4, so that when the door is in closed locked position simultaneouspressure on eachpush button I will efiect a release of the catch means to permit an opening of the door.
  • the spacing between the two push buttons I should be such as to enable the distance therebetween to be spanned by an open adult hand of normal size so that the respective catch memhere may be released by pressure of-the thumb and a finger of one hand simultaneously against the respective push buttons when the hand is in substantially full open position for such purpose.
  • the push buttons 1 When the push buttons 1 have been pressed inward to eflect a release of the respective catches, it is necessary to effect a pull on the door to open it. Thisis accomplished by the operator engaglng with his other hand a pull member l0 attached to the outer side of the door in some convenient position for such purpose.
  • the pull III is located in oflset relation to the vertical line of the push buttons 1. In locating the pull l0, care should be taken that it is not so closely positioned to one or the other of the push buttons as to enable the distance therebetween to be spanned by the small hand of a child in a manner that he is able to engage the pull with one finger and the 'push button with the thumb of the same hand.
  • the span of the normal hand of an adult is about seven and one-half or eight inches, so that the spacing of the. two catch members should be for normal purposes not less ordinarily than seven inches, and the pull should be spaced 9. suiiicient distance from both catches to prevent the operation of both the pull and a catch member with one hand.
  • a controlling means for a movable closure of a medicine cabinet including a pair of catch means each carried by said closure for latching it inclosed position, a manually operable con trol member for each of the catch means, said from each other on the closure a distance greater than the normal stretch between the thumb and any one oi the fingers of the hand of a child and no more than a similar stretch on one normally sized hand of an adult in fully spread position to provide for operation thereof simmtaneously.

Landscapes

  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

March 4, J. E. GORRELL SAFETY LOCK MEANS FOR CABINETS Filed 001;. 31, 1940 QWW /al/n lfiffza Patented Mar. 4, 1941 "UNITED STATES PATENT OFFICE i I 2,288,699 1 c ssrs-ry LOOK mans son csnmms so}: a. Gen-ell, Battle ones; such, assitnor to tile Creek Sanitarium and Benevolent Association, Battle Creek, Mich, a corporation of Application October 31, 1940, Serial No. 383,892
2 Claims. (01. 292-1) This invention relates to medicine cabinets, and has primarily for its object to provide means in connection therewith for sealing or closing at least a portion of the cabinet in a manner which is impossible to be opened by a small child, but can be readily opened by an adult, thereby enabling poisons or other materials or articles, particularly dangerous in the hands of small children, to be safely kept in a manner accessible only to adults.
a A further object of the invention is the provision of a locking means for a cabinet door which will permit opening of the door only by the use of two hands of an adult size.
The invention is fully described in the following specification and one preferred embodiment thereof illustrated in the accompanying drawing, in which- Figure l is a perspective view of a cabinet embodying the invention, with the main door fully opened, and the supplemental door equipped with the invention is partially opened, and Fig. 2 is an enlarged sectional detail of one of the door locking means.
Referring to the drawing, I designates a cabinet suitable for the storage of medicines or the like, and being closed by a door 2. This cabinet, in the present instance, is provided interiorly with a compartment 3 which may have one or more shelves therein, and is closed by an auxiliary door 4 hinged to one side thereof, in the present instance, for swinging opening and closing movements. It is preferable to have the auxiliary door 4 so disposed within the cabinet with respect to the door 2 that a closing of the door 2 effects a closing of the door 4 should the latter be open.
The auxiliary door 4 is locked in closed position by two spaced catch members 5, 5, adapted to have locking engagement with respective stationary catch parts in the interior of the cabinet. Each catch I is normally engaged with its stationary catch part when the door is closed, so 'as to retain the door in such position, the catch for such purpose preferably being of the spring actuated type.
Each catch 5 is individually controlled, in the present instance, by a push botton I projecting in exposed position without the front side of the door 4, so that when the door is in closed locked position simultaneouspressure on eachpush button I will efiect a release of the catch means to permit an opening of the door. The spacing between the two push buttons I should be such as to enable the distance therebetween to be spanned by an open adult hand of normal size so that the respective catch memhere may be released by pressure of-the thumb and a finger of one hand simultaneously against the respective push buttons when the hand is in substantially full open position for such purpose.
When the push buttons 1 have been pressed inward to eflect a release of the respective catches, it is necessary to effect a pull on the door to open it. Thisis accomplished by the operator engaglng with his other hand a pull member l0 attached to the outer side of the door in some convenient position for such purpose. In the present instance, the pull III is located in oflset relation to the vertical line of the push buttons 1. In locating the pull l0, care should be taken that it is not so closely positioned to one or the other of the push buttons as to enable the distance therebetween to be spanned by the small hand of a child in a manner that he is able to engage the pull with one finger and the 'push button with the thumb of the same hand.
so that it is possible for him both to release the catch and pull out on the Dull member with one hand and use the other hand to release the other catch.
The span of the normal hand of an adult is about seven and one-half or eight inches, so that the spacing of the. two catch members should be for normal purposes not less ordinarily than seven inches, and the pull should be spaced 9. suiiicient distance from both catches to prevent the operation of both the pull and a catch member with one hand.
It is found in practice that this combination of pull and separate catch means for a cabinet door provides a very eflfective means for preventing small children from opening the door and thus obtaining access to the interior of the cabinet where poisons, or other medicines or articles which would be injurious to a child, are kept.
I wish it understood that my invention is not limited to any specific construction, arrangement or form of the parts, as it is capable of numerous modifications and changes without departing from the spirit of the claims;
Having thus described my invention, what I claim as new and desire to secure by United .States Letters Patent is:
1. A controlling means for a movable closure of a medicine cabinet. including a pair of catch means each carried by said closure for latching it inclosed position, a manually operable con trol member for each of the catch means, said from each other on the closure a distance greater than the normal stretch between the thumb and any one oi the fingers of the hand of a child and no more than a similar stretch on one normally sized hand of an adult in fully spread position to provide for operation thereof simmtaneously. means to tension the control members whereby the same can only eflect release or the catches (by maintaining pressure thereagainst by said adult hand of the operator in the closing direction of said closure to release said catch means, and separate pull means on the closure spaced from each of the control members at a distance in excess of the aforementioned stretch of a child's hand, so as to require the operator to manipulate the pull means with his other hand in opposition to and while maintaining his first 2,288,699 hand engaged with the control members in order to prevent possible opening or the closure before release of the control members.
2. A controlling means in accordance with claim 5, wherein the catches are spring tensioned and whereinthe control members'therefor are siidabie transversely of the closure, and have outer ends which project beyond the front face of the closure. said control members being loosely engaged with the catches and operable I inwardly oi the front face of the closure to release the catches so that upon any outward pull being'exerted on the control members in an attempt to open the closure. the catches will be 4 maintained in latched position.
- JOHN E. GORRELL.
, CERTIFICATE OF CORRECTION. V 4
Patent No. 2,255,699. March 1 19m.
JOHN E. GORRELL. It is hereby certified that error appears in the-printed specifieation of the above numbered patent requiring correction as follows: Page 2, second column, line 5' claim 2, for the claim reference numeral "j" read --'-1--; and that the said Letters Patent shouldbe read with this correction therein thatthe same may conform to the record of the case in the Patent Office.
Signed and sealed this 225d day of April, A. 1). 191m.
Henry Van Aradale, (seal), Aeting Commissioner of Patents.
US363692A 1940-10-31 1940-10-31 Safety lock means for cabinets Expired - Lifetime US2233699A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US363692A US2233699A (en) 1940-10-31 1940-10-31 Safety lock means for cabinets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US363692A US2233699A (en) 1940-10-31 1940-10-31 Safety lock means for cabinets

Publications (1)

Publication Number Publication Date
US2233699A true US2233699A (en) 1941-03-04

Family

ID=23431295

Family Applications (1)

Application Number Title Priority Date Filing Date
US363692A Expired - Lifetime US2233699A (en) 1940-10-31 1940-10-31 Safety lock means for cabinets

Country Status (1)

Country Link
US (1) US2233699A (en)

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448415A (en) * 1947-01-09 1948-08-31 Oliver J Bunten Door lock bolt
US2523940A (en) * 1946-09-28 1950-09-26 Frank E Bronson Safety guard for automobile door handles
US2720776A (en) * 1953-04-24 1955-10-18 George M Eberle Safety means for cabinets
US2736598A (en) * 1953-10-23 1956-02-28 William J Laffey Door control for refrigerators
US2759782A (en) * 1953-02-18 1956-08-21 David L Evans Medicine locker
US2879123A (en) * 1958-02-26 1959-03-24 Camloc Fastener Corp Concealed latch for medicine cabinets
US2936189A (en) * 1959-02-27 1960-05-10 Peter Begelman Receptacle safety latch means
US2938372A (en) * 1955-02-11 1960-05-31 Pinson Abraham Coin box closure
US3087765A (en) * 1961-02-16 1963-04-30 Albert L Chapman Medicine cabinet latch
US3160431A (en) * 1962-02-26 1964-12-08 Nat Lock Co Latch assembly for medicine cabinets
US3519299A (en) * 1968-03-06 1970-07-07 Richard H Goodwin Safety lock for container
US4286809A (en) * 1979-06-08 1981-09-01 Godwin Richard H Child-proof cabinet closures
US4813753A (en) * 1987-04-06 1989-03-21 Drustar Inc. Drug control and dispensing assembly
US4854448A (en) * 1988-04-25 1989-08-08 Child Safety Products Child proof container
US5143430A (en) * 1990-09-06 1992-09-01 The Vendo Company Inner door latch
US5172575A (en) * 1991-09-11 1992-12-22 Fisher Thomas I Gun box latching mechanism
US5316136A (en) * 1993-02-24 1994-05-31 Castagna Mary C Condom case with dual locking mechanisms
US5437390A (en) * 1993-02-11 1995-08-01 Romick; Jerome M. Medication control and dispensing package assemblage
US5647618A (en) * 1995-10-23 1997-07-15 Lamberth; James E. Infant safety latch mechanism
US5895080A (en) * 1996-03-29 1999-04-20 Drumheller; Kirk Additional security, application, and operability in child-resistant latches
WO2004032066A2 (en) * 2002-10-01 2004-04-15 Wincor Nixdorf International Gmbh Safe with separately accessible inner areas
US20070024165A1 (en) * 2005-07-28 2007-02-01 Stephen Moulton Modular weapons locker
US20070029340A1 (en) * 2005-08-03 2007-02-08 Alpha Security Products, Inc. Dispenser system and apparatus for recorded media
US20090169295A1 (en) * 2007-12-27 2009-07-02 Masahiro Haruyama Pushbutton mechanism and image forming apparatus
US20100109347A1 (en) * 2008-10-03 2010-05-06 Atom Medical Corporation Incubator
US20110298347A1 (en) * 2010-06-02 2011-12-08 Adc Gmbh Distribution cabinet
US20140132131A1 (en) * 2011-08-31 2014-05-15 Vicky Renee Thomas Fashion Accessory Internal Door Storage Cavity
US20140157676A1 (en) * 2012-12-07 2014-06-12 Dongbu Daewoo Electronics Corporation Door apparatus for drum type washing machine
US20140325895A1 (en) * 2006-04-11 2014-11-06 Vm Products Inc. Tamper-Resistant Fly Control Station and Methods for Using the Same
US20150107159A1 (en) * 2012-04-25 2015-04-23 Hettich-Oni Gmbh & Co. Kg Sliding door fitting
US9140049B2 (en) * 2013-10-15 2015-09-22 Rhino Metals, Inc. Safe storage panels
US10750860B1 (en) * 2019-10-29 2020-08-25 Emily Arndt Toy gun safe
US20220235590A1 (en) * 2021-01-26 2022-07-28 Rev Ambulance Group Orlando, Inc. Vehicle door including push button actuator

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2523940A (en) * 1946-09-28 1950-09-26 Frank E Bronson Safety guard for automobile door handles
US2448415A (en) * 1947-01-09 1948-08-31 Oliver J Bunten Door lock bolt
US2759782A (en) * 1953-02-18 1956-08-21 David L Evans Medicine locker
US2720776A (en) * 1953-04-24 1955-10-18 George M Eberle Safety means for cabinets
US2736598A (en) * 1953-10-23 1956-02-28 William J Laffey Door control for refrigerators
US2938372A (en) * 1955-02-11 1960-05-31 Pinson Abraham Coin box closure
US2879123A (en) * 1958-02-26 1959-03-24 Camloc Fastener Corp Concealed latch for medicine cabinets
US2936189A (en) * 1959-02-27 1960-05-10 Peter Begelman Receptacle safety latch means
US3087765A (en) * 1961-02-16 1963-04-30 Albert L Chapman Medicine cabinet latch
US3160431A (en) * 1962-02-26 1964-12-08 Nat Lock Co Latch assembly for medicine cabinets
US3519299A (en) * 1968-03-06 1970-07-07 Richard H Goodwin Safety lock for container
US4286809A (en) * 1979-06-08 1981-09-01 Godwin Richard H Child-proof cabinet closures
US4813753A (en) * 1987-04-06 1989-03-21 Drustar Inc. Drug control and dispensing assembly
US4854448A (en) * 1988-04-25 1989-08-08 Child Safety Products Child proof container
US5143430A (en) * 1990-09-06 1992-09-01 The Vendo Company Inner door latch
US5172575A (en) * 1991-09-11 1992-12-22 Fisher Thomas I Gun box latching mechanism
US5437390A (en) * 1993-02-11 1995-08-01 Romick; Jerome M. Medication control and dispensing package assemblage
US5316136A (en) * 1993-02-24 1994-05-31 Castagna Mary C Condom case with dual locking mechanisms
US5647618A (en) * 1995-10-23 1997-07-15 Lamberth; James E. Infant safety latch mechanism
US5895080A (en) * 1996-03-29 1999-04-20 Drumheller; Kirk Additional security, application, and operability in child-resistant latches
WO2004032066A2 (en) * 2002-10-01 2004-04-15 Wincor Nixdorf International Gmbh Safe with separately accessible inner areas
WO2004032066A3 (en) * 2002-10-01 2004-07-01 Wincor Nixdorf Int Gmbh Safe with separately accessible inner areas
US20050284345A1 (en) * 2002-10-01 2005-12-29 Nixdorf International Gmbh Safe with separately accessible inner areas
US20070024165A1 (en) * 2005-07-28 2007-02-01 Stephen Moulton Modular weapons locker
US20070029340A1 (en) * 2005-08-03 2007-02-08 Alpha Security Products, Inc. Dispenser system and apparatus for recorded media
US20140325895A1 (en) * 2006-04-11 2014-11-06 Vm Products Inc. Tamper-Resistant Fly Control Station and Methods for Using the Same
US8162359B2 (en) * 2007-12-27 2012-04-24 Oki Data Corporation Pushbutton mechanism and image forming apparatus
US20090169295A1 (en) * 2007-12-27 2009-07-02 Masahiro Haruyama Pushbutton mechanism and image forming apparatus
US8424930B2 (en) * 2008-10-03 2013-04-23 Atom Medical Corporation Incubator
US20100109347A1 (en) * 2008-10-03 2010-05-06 Atom Medical Corporation Incubator
US20110298347A1 (en) * 2010-06-02 2011-12-08 Adc Gmbh Distribution cabinet
US20140132131A1 (en) * 2011-08-31 2014-05-15 Vicky Renee Thomas Fashion Accessory Internal Door Storage Cavity
US20150107159A1 (en) * 2012-04-25 2015-04-23 Hettich-Oni Gmbh & Co. Kg Sliding door fitting
US9228386B2 (en) * 2012-04-25 2016-01-05 Hettich-Oni Gmbh & Co. Kg Sliding door fitting
US20140157676A1 (en) * 2012-12-07 2014-06-12 Dongbu Daewoo Electronics Corporation Door apparatus for drum type washing machine
US9140049B2 (en) * 2013-10-15 2015-09-22 Rhino Metals, Inc. Safe storage panels
US9888771B2 (en) 2013-10-15 2018-02-13 Rhino Metals, Inc. Safes having interior storage panels
US10750860B1 (en) * 2019-10-29 2020-08-25 Emily Arndt Toy gun safe
US20220235590A1 (en) * 2021-01-26 2022-07-28 Rev Ambulance Group Orlando, Inc. Vehicle door including push button actuator

Similar Documents

Publication Publication Date Title
US2233699A (en) Safety lock means for cabinets
US3175853A (en) Lock means
US2936189A (en) Receptacle safety latch means
US2197195A (en) Latch
US3850463A (en) Latch assembly
US3109900A (en) Protective guard for actuating devices
US2621951A (en) Safety lock
US1716169A (en) Locker
US2032019A (en) Lock for interlocking fasteners
US1950414A (en) Lock for separable fasteners
USRE22431E (en) Frozen food locker unit
US1195964A (en) Samuel s
US2258942A (en) Hand traveling bag
US1367043A (en) Suitcase
US2179669A (en) Vanity case
US2736598A (en) Door control for refrigerators
JPS6424983A (en) Peripheral locking mechanism
US2997354A (en) Safety compartment for medicine cabinets
US2830547A (en) Emergency latch release for refrigerator structure
US1656699A (en) Lock
US1578537A (en) Locking device for trunks
US897423A (en) Door-fastener.
US2555988A (en) Tourist cabinet stool
US1544995A (en) Luggage lock
US2988909A (en) Door lock