Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS1940971 A
Publication typeGrant
Publication dateDec 26, 1933
Filing dateJun 8, 1931
Priority dateJun 8, 1931
Publication numberUS 1940971 A, US 1940971A, US-A-1940971, US1940971 A, US1940971A
InventorsFrank G Schwartz, Rupert A Nourse
Original AssigneeMidland Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Door hanger lock and release
US 1940971 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Dec. 26, 193s.

F. G. SCHWARTZ ET AL 1,940,971

DOOR HANGER LOCK AND RELEASE Filed June 8, 1951 3 Sheets-Sheet l 729m@j BY A TTORNEYJ Dec. 26, 1933. F. G. SCHWARTZ ET AL DOOR HANGER LOCK AND RELEASE Filed June 8, 1951 f 3 Sheets-Sheet 2 A TTORNEYS Dec. 26, 1933. F. G. scHwARTz Er AL 1,940,971

DOOR HANGER LOCK AND RELEASE Filed June 8, 1951 3 Sheets-Sheet 3 l N V EN TORS A TTORNEYS Patented Dee. 26, 1933 `DOORfHANGrEIt LOCKYAND RELEASE*v Frank G. seliwatz', 1' sfeith M111timukee,l ao Rupert A. Ni1rse` Miltv aiikee, Wis.,` `as"sgnors vrto The Midland Company, vSouth Milwaukem' j l Wis;, al-'corpora tions'of Wisconsin f ApplicationJune s, 'i931'. yserial Ne. 542,856V

i claim; 101.2922164) This invention relates to improvements 'door hanger ,locks and releases, particularly,- although not solely, adapted for the lsliding doors'of'baggagewcars and the like. l f

J! Iraimnen are subjectedto the vhazard of injury from the slamming rof baggage and mail 'car doors and the present invention overcomes this hazard bytheprovision of a door hanger' and locking device which vwill 'positively hold thefdoor infany 1Q desired position and'wiu prevent it fromeinen;A

ming, and if thedor should belvd toward closed positioii'git will automatically 'be stopped short of the car a'mbarid prevent injury Vtoan attendant. f l -A- further object of the invention is to provide a door? hanger-'lock vandl release wherein-'the lock and release is actuatedby;'movementsof'the` door handle in the normal utilization of the handle for' opening or Vclosing the door.f!f #20 'A furtherobjeetor ther` invention is toipre'vide a door hangerlock and 'releasel which controls Ithe movement of'a doorA to openorclosedoray desire'd'partially opened position, and which automatically locks thedoor inany ofesaid positions. :Sliding-doors, in their normal-fuse,v are sub# jected to considerable we'ar,"and the'preset-iiiventionV further contemplates anr adjustable l"shirn andlatch bolt arrangement by'which, after `vv'ear has occurred on thedoor which would 'ordinarily cause! an 'improper' disposition 'of the latch bolt carried thereon, said latchbolt may be readily relocated' and soheld by thef'shim arrangement, to compensate for the Wear on theV door. v

A further object of the invention is'toprovide a doo-r hangerllock and release vwherein thelatch bolt operating-rod is relatively flat and squared' inform whereby it Willha've rigidity andstrength said arrangement also permitting the'p'o'sitioning of said rod closely against` the faceV of the door soit will not form .anV objectionable "projection or obstacle. Y e i A Vfurther object ofthe invention'is to provide a door, hanger equipped with a stay vvhiv'shp'os-4 sesses .unusual strength because of itsk 'squared Y form and Which cooperates with the track to pre- Y vent the door hangerwheels from jumping off .of thetrack. 1 w Y t' vA further object of the invention is Jcof-provide' a door hangerY lockand release which is of very' simple construction, is strong anddurable, is eili-4 cient in ,itsA operation;v is' easilyv and conveniently manipulated.' and which isE Welladapted' fozjrthe' purposesdescribed. f e With the above and other Vobjects?.in vievvg the inventionconsists of theimprovedf.doorihanger lock arid release, and itsparts 'and combinations asl set `Aforth in the claim; and 'all equivalents thereof. e

' In the accompanying drawings in which the same reference characters indicate the saine parts inail -ef `the views:

" Figlie a feeeeview oi'aif'eiiding door' with the improved 'door hanger 'lock fand 'release mecha# nismapplied thereto;

Ig-Fig. 2 is" an enlarged fragmentary front view of the door showing ori a larger scale -the lock andrelease operating vrodan'd operating handle; --Fi'ggS is a"v side Viewv o fthe showing in Fig. 2 with-thedoor showninvertical section; Fig.- 4 is avfragmehtary front View, on arrenlarg'e'd scale, v'of"foneway of forming therwheel trackand*theflatchbolt stop track; f

Fig. 5 is a cross-'sectional view thereof vtaken Fig.V Gis-a' front 'view of ali-alternative form of stop `track fora latch bolt;

-` Fig. 'IV is' across-sectional View thereof taken on linee'l-f-v of'Fig-.ef e .l Figi-8 lisr an enlarged front View of the'hanger lock a'ndrelease'meehanismasapplied to adoor Withportionsbroken away to showfdtails of con# Fig'.-\9 is a; topview'of the showingfin Fig;A 8 'Figa 1() is a vertical A-sectic'm'al. View ltaken on une 1 9-'10 of Fig. s; l y -A Fi'gll is avrticalsectional view takenl on 1ine-i1-i11o`f-rig-fej; 2

"Fig:l i2 is a vertical sectional-view similar' to regl. iifoniyeiio'wing the` rei-eenieder theziateii bolt' and; shii'ns to` compensate `for wear 'on 'the 606m. Y

scale', of a Wheeleddoorhangerl applied to the d c'ioi, andfcooperati'ngwiththe other door hanger which includes" 1the"1o'ck andv release mechanism; Fig. 14 is a planr View thereof; Vandl f Y "iFigL 15is'a Vertical sectional view'thereof. Y f n Referringl novv` 'more' particularly to fthe-'draw- ,l ings, it vv'ill appearv that' the numeral i8r Yindicates a hangerV` track' uponr the upper.: edge fof ywhich agrooved Vhanger Wheel I9 isf-mounted..Vr A- hanger 20 depends fromthe shaft 211ofis'aid Wheel and' isy adjustably connected to' vone' side-portion of ra slidable door. 22 by bolts j23;r A' anged .inner extensio'nrl. ontheftra'ck holdst'he :same in spaced relationfro'm'thevwall 24'.V f

The Iower outer side,portiontof:distract:V 1e

' car1ie's"fa.stv an elongated; horizontally '.exten'ded apart locking recesses 27 therebetween. Varied forms of wheel tracks and stop tracks may be used. Figs. 9 to 15 inclusive show a wheel track 18 of channeled formation with the integral rear track 25' for cooperation with around latch,

bolt. Said track 25 has curvedflocking recesses 27 and shoulders 26. y

The hanger frame 20, to one side of the periphery of the wheel 19, is formed with a vertically extending groove or channel 28 through which extends, between a pair of liners 3l a reciprocalbolt 29. VThe bolt is formed with-an inwardly projecting head 30, of ,square formY in cross-section, which extends over and is adapt--` .ed to ride on the upper edges ofthe shoulders 26 of the stop track 25, and saidV bolt head-30 may also drop into any of the `locking recesses 27 to lock the hanger frame and ,the supported door 22 in closed position, as shown. It will be noted that the upper edges of the shoulders 26 of the stop track are. inclined downwardly toward'a side edge of the door. Thus, when the door is moved toward closed `position the bolt, unless manually manipulatedto prevent it from so doing, will automaticallyA drop into any of the locking recesses 27. Byparticular reference to Figs. 8 and 11 it Willbenobserved that the bolt is formed with a vertical recess 32 through the upper portionof which'a lug 33 formedron the hanger frame extends, there also` beingvopposed apertures 34 in the upper portions ofthe liners 31 to accommodate said lug. A .coiled spring 35 is confined withintherecess32 of the bolt between the lower end thereof and said lug 33. The lug 33 limits the downward movement of the bolt and the spring yieldingly holds the bolt in its lower locking position. An outwardly projecting lug 29 formed on the lower end of the bolt 29, by abutment withv a, lower por- ,tion of the hangerA casing, serves to limit Athe upward movement of the bolt.

A strap handle 36, of ordinary construction, is mounted on the slidable door 22 below theplane of the hangerframe, and a tubular handle 37, extended loosely around the strap handle, is of less length than the latter to permit its-being vertically movable on the strap handle. Said tubular handle is lformed with an upper` laterally extending flange 37' carrying an upstanding guide 38l in whichv the. lower end portionof a connecting rod 39 is rigidly connected. Said connecting rod is formed of relatively flat wide stock so as to minimize the tendency of the same to bow,and it extends vertically immediately adjacent the face of the door 22 through guide. bracketsv40. The con-` necting rodfis, therefore, flatly disposed with'respect to the door andA does not form an object tionable projection. Thefjupper end portion of the connecting rod is Vflangedas at 39 and abuts against thel lower flange 29V of the-bolt.

' 'The entirelower portion of the hangerframe 20 which depends from the wheel shaft21is spaced from the door 22 by a back plate 41 which is adjustably connected to said hanger frame 20 by a bolt43passing through elongated apertures 44 in a stay.. member 45 andalsozthroughy the hanger is provided.,

frame. Said projecting stay 45 is an independent member, removable upon detachment of bolt 43, and a portion of said stay projects inwardly below the lower portion of the track 18. The stay, cooperating with the track, holds the hanger frame in such a position that the wheel carried thereby, can not jump norbe removed from the track, during normal operation of the device. The stay is an independent removable member to facilitate mounting or detachment of the entire door.

After a sliding door has been in use for a considerable period, wear thereon may havecaused it to become warpedor misshapen. If no means are provided for compensating for said condition of the door,'the door hanger and latch bolt carried thereby will become impaired with respect to theirV complementary members and will operate less effectively. For this reason, the arrangement illustrated particularly in Figs. 11 and 12 As previously mentioned, the rlatch bolt 29- is disposed within its verticalslot in the hanger plate 20 between a lpair of Vliners l31. When the device is originally installed the arrangement is, therefore, as is illustrated by Fig. 11locati'ng the. head30 Yof the latch bolt correctly with-respect to the stop track 25. After thedoor has Abecome warped or out of alignment horizontally, itis necessary only to re-locate the liners 31.111 the manner shown in Fig.Y 12, vboth liners being against the inner sideof the bolt to space'the same outwardly from the face of the door` a correct distance to properly position the latchbolt andhead thereof. It is tobe noted that'thevertical slot in-.the hangerplateis closed from the front by a detachable cover plate20. Said cover plate is removablyv held in position by bolts 46 and the removabilityof said cover plateaffords ready access tothe latch, bolt ,andY liners forrelocation purposes, as above described.- f 7; j

.Y he hanger and mechanism previously scribed. is applied to, one upper corner portion of the door and additional hanging lmeans Ymust be provded--for the oppositeupper ,corner portion of the door. Said additional hanging means dei.



is similar tov the hangerv described except that mediate portion of said hanger plate 20 also carries an-inwardly projecting squared stay 45 lodging below the track- 18 toinsure retention of the wheel 19 on thetrack. y i,

The arrangementzofthe'improved door hanger lock and release is such that the user in grasping the handle to open the door will move rthe handlefmember upwardly to unlatch the bolt, and the door may then be slid to open position. In moving to open positionas Vsoon as-theuser releases the khandle or fails to retain it in its upper position, the head ofthe bolt will drop into a locking recess of the stop track tonretain the .door in the position it has reached.. VIn moving the vdoor to closed position, theV same operationas before described isv repeated. and if the operator attempts'Lpto push-or slide the door to closedpositiomwithout vretaining his hold onV Vthe handle, the door will bestoppediand heldj door. Furthermore, said arrangement permits thevdoor to be securelyy held in any desired partially closed position for ventilation or they like.

In addition to the latchpbolt arrangement and the ability to retain the" door inany position, the invention is advantageous in that the latch y bolt may be accurately adjusted or re-located for proper functioning after there has been conf siderable wear on the door. The 'squared stay member 45 and its cooperation Awith the undersurface of the track prohibits undesired displacement of the hangers and Wheels, andthe at ccnnecting rod 39 permits its compact disposition against the door and makes it strong.

From the foregoing description it Will be seen that the improved door hanger lock and release is of simple and -novel construction. and is well adapted for the purposes described.V Y

invention ist What is claimed as the for a sliding door Vto compensate for lateral shift of the door with mounting.


respect to its track laterally adjustableV use

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2452501 *Apr 29, 1946Oct 26, 1948John R GardnerGarage door operation
US3348337 *Feb 4, 1965Oct 24, 1967Outboard Marine CorpSliding door
US4708411 *Oct 27, 1986Nov 24, 1987Spacesaver CorporationAnti tip system
US4872287 *May 13, 1988Oct 10, 1989C. Hager & Sons Hinge Manufacturing CompanyLatching mechanism for trolley-hung doors
US7377076 *Oct 15, 2004May 27, 2008Haworth, Ltd.Single-action egress lock for a sliding door
US8596422 *Apr 23, 2012Dec 3, 2013International Business Machines CorporationWedge shape safety stop
US8636117 *Sep 30, 2010Jan 28, 2014International Business Machines CorporationWedge shape safety stop
US9027283 *May 14, 2013May 12, 2015Abp Beyerle GmbhSliding door
US20050272498 *May 12, 2005Dec 8, 2005Atlantic City Coin & Slot Service Company, Inc.Display and control system for gaming
US20060080912 *Oct 15, 2004Apr 20, 2006Shedd Nathaniel SSingle-action egress lock for a sliding door
US20120080274 *Apr 5, 2012International Business Machines CorporationWedge shape safety stop
US20120205201 *Apr 23, 2012Aug 16, 2012International Business Machines CorporationWedge shape safety stop
US20130333292 *May 14, 2013Dec 19, 2013Abp Beyerle GmbhSliding door
U.S. Classification292/164, 70/100, 292/184, 16/96.00R, 292/175, 292/DIG.460
International ClassificationE05D15/06
Cooperative ClassificationE05D15/0634, E05Y2800/296, Y10S292/46
European ClassificationE05D15/06D1B2