US1900254A - Latch mechanism - Google Patents

Description

March 7, 1933. K, F. NYsTRoM 1,900,254

LATCH MECHANISM Filed June 14, 195o `2 sheets-sheet 1 {NVE/vra@ KAEL E A/yir/eQM SYMM Malfcl'l 7, 1933. K, F, YSTROM 1,900,254

LATCH` MECHANISM 2 Sheets-Sheet 2 Filed June 14, 1930 Y Patented Mar. 7, 1933 UNITED AsraTl:sl'lliAffir-:ENr "oi-Fica KARL F. NYs'TnoM, Voii` MILWAUKEE, WISCONSIN, 4iissiaivon 'ro CAM-EL coivirANY, oF v CHICAGO, ILLINOIS,` A =CORPORIATIONO`F ILLINOIS LATCH unici-Init*Isin` Application inea June 14,1930. sriai 119.4614168.

This invention relates to latch mechanism intended primarily, though not so restricted, for ap alication with swinging doors which mayb cars.

In latch devices employed in connection with end doors for house cars it has been the' practice to utilize a main latch for securing Vthe end doors at their meeting edges and to employ separate auxiliary latches yspaced from the main latch for the lower edges of said doors. lVhile this arrangement presented a strong construction at the lower niargin of the doors, it was found in instances 'iI of shifting lading, for example,withiii thev car, that the. main latch alone was insufficient to provide requisite fastening means `,for the upper margin of the doors. Moreover, the

problem of supplying additional and satisfactory lsecuring means forthe upper part of the doors was further complicated bythe position of such means at a height which prevented ready access and easy operation ,n thereof.

This invention, therefore, has for an object the provision of ordinarily inaccessible latch means for the upper margin of swinging doors which may be employed in house cars, the said means being adapted for control without the necessity vof climbing up on the car.

A further object is the provision of'aui'z-i'v iliary Alatch means for enddoors opera-ble in response 'to 'the movements of main latch means. i n 'y It is also an object to provide auxiliary latch means for the upper margin Vof a swinging door related to main latch means for the door so as to insure latchingof the upper part of the door under conditions where such ypart may be bowed outwardly. y

Other objects of the invention will appear as the description proceeds, taken in connection with the drawings forming a part thereof, in which ployed on the ends of railwayfhouse Figure 1"is an elevation ofa carend con struction disclosing latc'lrinechaiiisin embodying theinvention.

Figure Qlis va section taken onf line 2-2 of Figure 1,*illu'strating the condition rela- Vtive to ythe lleftv hand door which may occur when said door is bowed Voutwardly* at the i upperv part thereof.

rFigures 3 and 4 are detail elevations ofthe lauxiliary latch means employed for the upper margin of the' doors. Y

Figure 5 is a fragmentary elevation Aof a modified construction. vFigureo is a v iewsiinilar 'to Figure 5, i'llustrat'ing the position'of the parts' of the latch mechanism when the main latch Ahas .just engaged'with its keeper.

Figure 7. is a sectional view taken online 7-7 ofrFigure 5. Y l Y Figures' and l9 are detailed elevation and plan views, respectively, of'auxiliar'y keepers.

Referring to the drawings, the numeral l() designates in its 'entirety the end construction of a. railway house car, including 'a pair of swinging doors 11 and 12 which, as is customary in such construction, are adapted to overlap at their inner edges. A mainlatch bar 13 is pivoted lfor swinging movement on a casting ,14 shown disposed on the door 12.y The latch bar is 'adaptedto bring about engagement between latch means carried thereby 'and keepers 15 and 16 mounted on the car above and below the doors,'respe'ctively, in ordert'o latch the doors in closed position;

A limiting stop 17 is carried by the door 12 y and is adapted for engagement with the latch bar.s A'pivoted abutment latch 18, carried by the7 'door 11, is utilized to maintain the main latch in itslatching position. Aux- 4 iliary latch means 19-19 are customarily employed for the lower margins of the doors.

From the above arrangement of main and auxiliary latches, it is evident that the'lower margin of the doors are substantially -secureda'nd that resistance against distortion,

A co

Abers may be used it sideration of Figure 2.

which may be caused by shitting lading, is greatly increased. lt has been found, however, that the main latch alone, employed at the upper margin el' the doors, is not infrequently ineiiective to resist thrust and the condition has been encountered whereby both the main latch and the keeper have been sheared 0E. For the highest eiiiciency in the operation et the doors for the ends of house cars it is deemed necessary to utilize a construction at the top ot the doors which will effectively o Vviate the conditions set out above. Plhis construction preferably takes the form of additional latch means, such latch means. being rela-tively inaccessible,

Constructions have been devised whereby` they may be operated by the main latch from the normal position ot' the trainman.

ln the embodiment of this invention illustrated in Figures l to t, inclusive, there is disclosed a pair ot auxiliary latches 20, 21 for the upper margin cit the doors. rllhe auxiliary latch 20, in itspreferred form, presents in an integral structure a body portion 22, provided at one end with van attaching portion and main 'latch casting` 23 and at the other end with a. substantially vertical latch ar1nQ/l,`which is adapted for engagement with keepers and 25 mounted on the vdoor and on the Car, respectively. llhe main latch casting 23 is capable or latching engagement with a main keeper 27 secured to the car. AThe auxiliary latch 22 comprises a body portion 28 and is formed at its opposite extremities with an attaching portion 29 and a latch arm 30. lThe latch arm is adapted' for engagement with corresponding keepers 31 and 32. ln the preferred 'form noted above one of the auxiliary latches-is shown formed integral with the main latch casting, but it is apparent that a single formed member mayembody both the auxiliary latches and the main latches or three separate memdesired. ln an v event only a single set. of rivets is required for tastening the latch members to the latch. bar 13.

The main keeper 2'? is provided with an outwardly tapered portion 83 which coacts with the main latch casting 23 to insure drawing of the doors inwardly into proper position in the door opening. lt is .apparent from Figure lot the drawings that engagement between. the main latch and its keeper 1 occurs prior to the engagement between the auxiliary latches and their corresponding keepers. Such arrangement is deemed high desirable as will appear from a conln this figure the door 12 is represented as .being in a position it would assume were it bowed outwardly at the top so as to prevent proper seating in the door-opening. The position taken by the auxiliary latches is'then as illustrated and it is clear that engagement between the auxiliary latches 24.-. and 30 and their correspondiary latch 36 willbe released from its i n during the swinging movement of the main ing keepers by a swinging movement only of the main latch bar is impossible. However,by the utilization ot the outwardly flared portion on the main keeper as well as by the provision for engagementfbetween the main latch casting and its keeper prior to engagement between the auxiliary latches and their keepers the bowed portion ot the door will be forced inwardly into the door opening during swinging movement 'of the main latch and the auxiliary latches will also be given a transverse movement whereby they will be brought into proper alignment with their keepers so as to insure the desired latching. 'lie condition treated abovel in respect` to door 12 applies as well to door 11 or to a condition in which both doors are bowed outwardly.

rlhe principle of the invention is also enibodied in the construction shown in Figures 5 to 9, inclusive. ln thisenibodiment Athe latch bar l is provided adjacent the latch casting 23 with a bracket 3- to which one end of the arm 35 is pivoted. 'lh'e other end oi the arm is pivotally connected to an auxiliary latch 3G, which is swingably intermediate its ci ils in a bracket 3'4" carried by the door. The auxiliary latch adapted for engagement with a keeper 38 secured to the car above the door. Extending trom the opposite side oit the bar 13 is a catch member 39 rigidly carried by said bar. The catch member is provided with abutment portion l0 adapted for engagement with one end of a separable catch al as hereinafter described. 'lhe other end et said separable catch is pivotally connected to a second auxiliary latch 42 and said separa-ble catch intermediate its ends is supported by means of a lug 453 projecting 'from the door 11. 'lhe latch l2 is pivotally mounted in a bracket 44C secured to the door 11 and has operative engagement with a keeper l5 fastened to the car. As in the previous embodiment a lia-red keeper 1.1-6 similar to the keeper 27 isemploycd in connection with the main latch.

' lt is plain t'rom the foregoing that as the latch bar 13 swings toward the lett as viewed in Figure 5 to release the doors the catch meinber 39, by its engagement with the separable catch member 41, will draw the lattertoward the lett. :During this movement the separable catch will also swing upwardly because of its engagement with the lug 43 so that when the main latch and the auxiliary latch l2 are released from their keepers the catch. members will be disengaged and the doors may be opened. lt is apparent that the other auxil- Dcr latch. yWhen it desired to latch the doors they are closed, the latch bar swung toward the right, the latch and the ilared keep 2 Il@ will, by their engagement, force tn top of the doors inwardly and ring about correct alignment between `the .auxiliary y'latches fand keepersso, as to insurepositive llatching of the doors. During the movement of thelatch barffthe abutment portion- 40 `makes contact with theY `separable catch member ll., forcingit downwardly and'to they rightr thereby in'- -suringengagement between the latch 42 keeper 45. The swinging of the bar' 13 alsov moves the latch' 36into engagement withfits keeperBS Vand thedoors VVwill be fastened. y 1 I Many modifications inthe details ofthe embodiments ol the invention' may be madey without vdeparting from the invention and it f ment thereof.'

each of said doors spaced from said Vmain, latch means, lconnections between said latch p l 'ineans, whereby said auxiliary?v latch means .is intended to include therein allsuch modiappended hereto;

.Iclaim:` 'J p l. A latch mechanism comprising a main swinging latchrauxiliary swinging latches on ication's as fall within the scope-ofthe claims opposite sides of said'mainlatch, connections between said-."inain and auxiliary latches Aelieectiifig p y latches and` keepers co-operablefwith said latches,said main latch engagingfits keeper during moving of saidl latches to latching position priorfto the engagement or' said auXilia-rylatclies with their corresponding keepers, saidinain latch keeper havingmea'nsV adapted'toimpart movement to said latches substantially Vnormally to `the swinging move- 2. 'llhe'combination witha pair of voverlappin'gswinging doors, of a main latch devicez swingably mounted door vfor latching said doors in closedy position, auxiliary latch devices for said doors having portionseXtendingabove said'doors, arms connecting said main and auxiliary. devices and keepers co-operablewith saidy `latci'i devices, said rauxiliary latch vdevices being engaged with and disengaged from jtheirlk'eepers responsive to the swinfring movements of said main latch. 1 8. The ycombination with a pair offswing-A ing doors, of main latchmeans `for latching `both said doors, auxiliarylatcli'means for will'be moved `to operative and inoperative positions lresponsive to the'movement `ofthe main latch means, and allared keeper for f each of saidflatch means, the keeper for said main latch means beinglared to a greater 'extentthan thekeepers for said auxiliary v latch means.

ico

a.v The combination with a pair of Swing-` ing doors, ofa latch 'mechanism comprising 'a main swinging latch* for fastening said doors, auxiliary latches on'opposite sides of said main latch, connections between said main and auxiliary latches to eect simultaneous movement oi'said latches,v keepers for outwardly the respective latches having..- j flared' portions, the flaredzportionl ofI the main with said keeper.

simultaneous movement of said.

on said overlappin g y keeper extendingV aV substantial distance i outwardly beyond the corresponding portions of Said auxiliarykeepers, ,said flared portion of lthe main keeper cooperating with said ymain latch incertain positionsof the doors-to l`force vsaidy kauxiliary. latches Asubstantially normally to said4 doors into alignment with ltheaux-Y iliary keepers whereby they may be engaged.

l f 5. VThe combination with a mainlswinging l latch for a lpivotally mounted door, off-an vauxiliary latch forsaid door, means ico-operatively connecting said latches foi'simultane- ,Y

ous movement, a keeper forsaid auxiliar-yl latch and means cooperating with said'maiii l y "80 .l both said latches transverseito'thewplane'in-` which the Ylatches swing, f whereby thel auX- latchand adapted to'imparty amov'einent to iliary l latch may be brought into alignment 1 c." Thefeojmbinaaon with a `both` said doors, `l auxiliary latch means Qffor eachof saidldoors supported from said main latch means'in spaced'relation theretoindependently of ysaid-doors, keepers for' all said i latch means, whereby` said auxiliary latch means willbemoved to operative yandinf operative positions relative to r'said keepers 7. In combinatioma hinged'doors,

a swinginglatch bar pifvotally mounted on one of saiddoors for latchin'gfb'oth.saiddoors,

a swinging latch pivotally connected vrto. said latch bar for additionally".latchingl one of .said doors anda swinging'latch foradditionally latching'the other of said doors, said last mentioned latch having releasable conn ection with said latch bar,

8. In combinatioma pair ofhinged'fdoorsC Iadapted: to overlap in closed position, a main 'latchfor latchingsaid doors, an auxiliary latch forsaid overlapping ,door,lsaid auxp iliary latch `being operable .by the main latch,

pair ofswingi responsiveqto the vinovement,lofthe kmain latch means. c

iiioo anauxiliary latch'for the other door support-@V110 ed thereon, y separable Ameans connecting said last vmentioned kauxiliary latch to' sai`d main latch andmeanscarried by vsaid last mentioned doorg to effect automatic separation of Y said vconnecting meansv during movement olfil 'sai'dfmain latch to lnoperative position.

` 9. Incombination, a pair of hinged doors. having overlapping marginal v"portionsf a main latch mounted onthe overlapping doorh 'Y 'for latching said doors, kan, auxiliarylatchf for said door connected vto said main latch for movement therewith, a swinging -`aux-- v'iliaryjlatch forthe other door and separableV meansconnecting` said lastmentioned auxiliary latch andsaid main-latch', said connect-"- ring means comprising a member provided witha hooksecured 'tosaidinaiii latch and i a lever-provided .with a hook pivotally secured toV said auxiliary latch, the hooks lof sa-idrmember and-said lever beingin-engage-139` i ment whenr said latches are in operativeposition. i Y

10. In combination, a pair 'of hinged doors having overlapping marginal portions, a

v main latch mounted on theoverlapping door for latching said doors, an auxiliary latch for said door connected to said main latch for movement i therewith, a swinging auxiliary latch for, the other door, separable means connecting said last mentionedy auxiliary latch and said main latch, said connecting vmeans comprising ka member provided with f Va hook secured to said main latch and a lever provided with a hook pivotally secured to i said auxiliary latch, the hoolrsoii said member and said lever being in engagement when vsaid latches are in operative position, and

ljwith a hook` secured to said main latch and said latches to inoperative position 50 a lever provided with a hook pivotally securedv to said auxiliary latch, the hooks of said, member and said lever being in engagement ,when said latches are in operative position, and means automatically edecting separation of saidseparable means during movement of said latches to inoperative position, said separating means comprising a lug secured to said last mentioned door in engagement with the underside of said lever.

l2. In combination, a pair of hinged doors having overlapping marginal portions, a main latch mounted on the overlapping door for` latching said doors, an auxiliary latch Jfor said door connected to saidmain latch for movement therewith, a swinging auxiliary latcli'lor the other door, separable means connecting said last mentioned auxiliary latchand said main latch, said connecting means comprising a member provided with a hook secured to said main latch and a flever provided with a hooi; pivotally secured to-.said auxiliary latch, the hooks of lsaid member and said lever being 'in engagement Vwhen .said latches are in operative position,

means automatically eiiecting separation of said separable means during movement of and an abutment provided on said member engageable with said lever during movement of said main latch to operative position to effect movement of said last mentioned vauxiliary latch and to restore the engagement vbetween said hooks;

latching said 13. lThe combination with a pair of overi lapping swinging'doors, of vmechanism for doors,- said mechanismcomprising an operating bar pivotally mounted upon the overlapping door -for swinging movement in a substantially vertical plane, a latch armfor each of said doors, means establish- `ing operative'engagement between said latch arms and said operating bar, said latch arms extending beyond said doors and keepers positioned beyond said doors and adapted to engage said arms.V l

14. The vcombination with a pair of' overlapping swinging doors, of mcchanism'i'ior latching the yoverlapped door comprising a vertically swingable operating bar pivotally mounted upon the overlapping door, `a latching arm for said overlapped doorr lyingiii overlapping relationship thereto and extending beyond on'e edge thereof, a 1Keeper positioned beyond said door adapted to have cooperative engagement with said arm and means connecting said bar and said arm.

l5. The combination with a pair of swinging doors `having overlapping marginal engagement, of a latch mechanism for each ci said'doors adapted to effect latching of the upper margins thereof, each of said latch mechanisms comprising a latch arm extending above said upper margins and a lreeper positioned above said doors and adapted lto be engaged by saidv latch arm, said-latch arms being inaccessible 'from the normal operating position and an operating bar pivoted to said overlapping door to swing in a vertical plane, said bar being readily accessible from the normal operating position and being operable to project and retract said latch armsirelative to said keeper.

16. In combination, a pair of hinged doors to overlap in closed position, a main latch for latching said doors, an auxiliary latch for said overlapping door, said auxiliary latch being operable by the main latch, an

auxiliary latch for the other door supported l" thereon, means operab'ly connecting the latch actuation thereby, said means being yseparable in the movement of said-latches to .in-

.operative position and adapted to reestab- V.lish operative relationship in the movement or said latches to operative position.

17. The combination with ay pair of swinging doors having overlapping marginal en-` gagement, main swinging latch mechanism Ior latching said doors, auxiliary swinging latch mechanism for each or said doors, said yior theother door to said main latch Jfor mainy and auxiliary latch mechanisms having swinging movement about a commonsaid main latch member and an arm extendl! K of said latch members.r

1 vas` ing at an angle to said body portion, a keeper secured to said doora keeper secured Vabove said door, 'said auxiliary latch member beingv Swingable lresponsive to: the swinging movement of seid mainrlateh member, said.

llatch-arm having engagement vwith seidlestl K operative position mentioned keepersv in the Signed at Chieago,'111inoi, this v12th `day y, K ofJune, 1980. l, K K, K K f KARL' F. NYKSTROMK. KK

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