US1495372A

US1495372A - Car-door lock

Info

Publication number: US1495372A
Application number: US540687A
Authority: US
Inventors: William S Witten
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-03-03
Filing date: 1922-03-03
Publication date: 1924-05-27
Anticipated expiration: 1941-05-27

Description

May Z7 1924.

W.l S. WITTEN OAR DOOR LOCK 2v Sheets-Sheet 1 Filed March 5, 1922 1- a g 1% a a. ze

May 27, 1924. O 1,495,372

v w. s. WITTEN v CAR DOOR LOCK Filed March 3, 1922 2 Sheets-Sheet 2 Patented May 27, 1924.

WILLIAM s. WITTEN, or CHICAGO, ILLINOIS.

n GA3-DOOR LOCK.

Applicationled March 3, 1922. Serial No. 540,687.

To all whom t may concern.'

Be it known that I, WILLIAM S. lVI'rrEN, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Car-Door Locks, of which the following is a specification, refer ence being had to the accompanying drawings.

My invention relates to locks for car doors and has for its object to provide an improved gravity-operated combined latch and lock for such doors which will be arranged so that a car seal may be readily applied thereto, and which will be self-lubricating so that it will not be apt to get out of order through exposure to the elements; also to provide a device of this character which may be used on doors arranged to swing laterally as well as to move endwise, and to provide means by which the latch may be secured either in its operative or in its inoperative position. I accomplish this object as illustrated in the drawings and hereinafter described. I/Vhat 7 I regard as new is set forth in the claims.

In the accompanying drawings,-

Fig. 1 is a side view of part of a freight car showing my improved lock and latch applied to the door thereof;

Fig. 2 is a side view of the lock, the cover plate of the case being removed and some parts being in section;

Fig. 3 is a vertical section on line Fig. 2;

Fig. 4 is a view similar to Fig. 2 showing some modifications;

Fig. 5 is a perspective view of the locking device used in the arrangement shown in Figs. 2 and 3; and

Fig. 6 is a perspective view of the locking device shown in Fig. 4.

Referring to the drawings,7 indicates the side of a freight car, 8 the usual sliding door thereof suspended by hangers 9 from a

rail

10, and 11, 12, 13 the side and bottom panels of the car door frame.

14 indicates the casing of my improved lock and latch, and 15 the latch member mounted therein. This latch member comprises an intermediate portion or hub 16 which is mounted upon a pivot 17 mounted in the side members of the case near the lower margin thereof, as best shown in Fig. 2. From this hub 16 extends a shank 18 having a head 19, the lower portion of 'which' is extended downward to form a lock or latch bolt 20. The head 19'is also providedk with an upwardly-extending rib or projection 21 adjacent to its outer margin, the purpose of which will be hereinafter set forth. Extending from the hub 16 at an obtuse angle with the shank 18 is an operating arm 22 whichv projects through an opening'in the caseV so that itis conveniently accessible for operation byh'and. As shownin Fig. 2 the head 19 is provided with a shoulder 23 adapted to bear on the lower margin of the case and form a stop to limit-the downward movement of the head 19 and bolt 20. When the latch is in its normal position the bolt 2O extends down through an opening in the lower margin of the case so that it is adapted to engage a keeper 24 secured' in the proper place toreceive it. Preferably this keeper has ay recess 25 in which the bolt 20 fits, and at one side of said recess is a bevelled guide block 26 which projects out from theside of the car so that when the door hasbeen swung away -from the side of the car, as indicated by dotted lines in Fig. 3, the rounded lower margin 27 of the bolt 20 is adapted to ride up onsaid:- guide until it may pass into operative engagement with the keeper when it will drop by rgravity to the position shown in Fig. 2. yAs best shown in Fig. 2, the outer margin of the bolt 20 is rounded so thatl when the door is moved endwise such rounded portion of the bolt will engage the keeper and the bolt thereby be lifted so that it will move into engagement with the keeper substantially in' the manner just described.

` As locks of this description are exposed to the elements it is desirable that means be provided for keeping the moving portions well lubricated, 4and to this end the case 14 is provided with a chamber 28 in its upper portion adapted to receive oily waste or other lubricating material. This chamber Iis provided with an opening 29y arranged in the path of the projection 21, which'is adapted to enter it when the head 19 is moved to its uppermost position. When this'occu'r's said projection receives oil or other lubricant from the chamberp28, and as 'the lubricant flows down over ythe latch it will be evident that whenever the latch is operatedlit will be lubricated, and consequently will'not, be4 apt to deterioratebecause of moistureff For lockingthelatchinoperative position position when desired, a locking arm is provided which is mounted at its upper end on a pivot 3l supported by bosses 32 which project from the case as best shown in 2. The shape of this locking arm 30 is best shown in Fig. 5 ironrwhich it will be seen that it comprises a vertical arm 33, the lower end portion of which is provided with a recess 34 adapted to receive the operating arm 22 of the latch, and also a horizontal arm 35 which is adapted to move into alinement with a fixed flange 36 which projects laterally from the cover plate 31 of the case, as shown in Fig. 3. The parts 3b, 36 are both perforated as shown at 38 1n Fig. 5 so that a car seal may be passed through said openings, thereby sealing them together. The arm 85 and iange 3G are so placed that they register when the locking arm 30 is in its operative position shown in 2, and since at that time the leeking arm is in operative engagement with the operating arm 22 and the bolt 2O is projected into engagement with the keeper the application of the seal will prevent the lock from being unlocked. lVhen the device is used merely as a latch the locking arm 30 may be thrown over on top of the case. as indicated by dotted lines in Fig. 2, so that the latch may be freely operated. Preferably the car door is provided with two of these locks arranged near its opposite lower corners, shown in Fig. l. but if desired additional locks may be applied to the doors at points higher up to support the door intermediately, as is desirable in the case ot cattle cars, or where the door is subjected to considerable strain intermediately. Also it will be understood that in some cases it may be desirable to apply the keeper to the door and the latch to the side of the car instead of the reverse arrangement shown in Fig. l. As shown, the portion of the arm member 22 that projects from the casing is curved upward on an are substantially concentric with the pivot of the locking arm 30 so that as such locking arm is moved into or out of operative position it is held in interlocked engagement with the arm 22 during the entire time that it is opposite such arm member So curving the arm member 22 and recessing the adjacent iace of the locking arm 30 permits not only a very strong interlocking et these parts but also enables such two parts to lie in the space between the planes ot' the side walls of the casing, as clearly shown in Fig. 3.

lf it be desired to secure the latch in its inoperative position, this may be accomplished by swinging the locking arm 30 down against the upper margin of the op erating arm 22 so that the lower margin of theloclring arm 30 rests upon said arm and holds the latch in the position shown in dotted lines in Fig. 2.

meager/za instead of using the locking arm 30 for the purpose of holding the latch out ot operative position a swinging arm 39 may be employed for this purpose, as shown in Fig. ll, in which the arm 39 is mounted on a. pivot l-O carried by a bracket elfi, said arm being in such position that it is adapted to swing by gravity over the upper end ot the operat ing arm 22, as shown by dotted lines in said ligure. In Fig. l I have also shown a dit ferent form of locking arm which acts on the upper portion of the head 19 instead ol on the operating arm 22. ln this construction the locking arm comprises a shank 4t2 pivoted at its upper end on a pivot 43 and having an arm la which is adapted to swing through an opening in the case so that it overlies the upper portion ot the head if) when the bolt 2O is in its operative position. The shank l2 is also provided with a plaie ,4:5 which extends in a direction opposite to that of the arm le and is adapted to register with a plate lr6 which projects from the margin of the case. The two plates i6 are perforated to receive a car seal. indicated by dotted lines in Fig. land shown at 4:7 in 6. lNhen the arm i4 is in its operative position, which it assumes hv gravity. the bolt 2O is held projected since the head 19 cannot swing` upward. The lock ing device 4t2 may be thrown up out ot operative position, as indicated by dotted lines in Fig. 4, when it is not desired to use it. While my improved lock and latch is de signed primarily for use on car doors it may be used in any other situation for which it is adapted, and the claims should be cone strued accordingly. l wish it to be understood also that my invention is not restricted to the specific construction shown and described as various modifications may be made without dejjjarting therefrom.

`What l claim as my invention and desire to secure by Letters Patent, is-

l. The combination with a door, ot a latch comprising a pivotally-mounted member having a downwardly-projecting bolt at one side of the pivot thereof and a curved operating arm projecting at the opposite side of said pivot, a keeper adapted to cooperate with said bolt, and a swinging arm movable into position to engage said curved arm and lock it in operative position, the pivot oi' said swinging arm being substantially concentric with the curvature or" the ojierating arm.

2. The combination with a door, of a latch comprising a pivotally-mounted member having a downwardly-projecting bolt at one side of the pivot thereof and a curved operating arm projecting at the opposite side of said pivot, a keeper adapted to co operate with said bolt, and a swinging arm movable into position `to engage said latch and lock it in operative position, the pivot of said swinging arm being substantially concentric with the curvature of the operating arm.

3. The combination with a door, of a latch comprising` a pivotally-mounted member having a downwardly-projecting bolt at one side of the pivot thereof and a curved operating arm projecting at the opposite side of said pivot, a keeper adapted to cooperate with said bolt, land a swinging arm movable into position to engage said operating arm for locking the latch in operative position, said swinging arm having means for interlocking it with said curved arm, and the pivot of said swinging arm being substantially concentric with the curvature of the operating arm.

4. The combination with a door, of a latch comprising a pivotally-mounted member having a downwardly-projecting bolt at one side of the pivot thereof and a curved arm projecting at the opposite side of the pivot, a keeper adapted to cooperate with said bolt, and a swinging arm movable along said curved arm and having a recess in one face to receive such curved arm, the pivo-t of' said swinging arm being substantially concentric with the curvature of the operating arm.

5. The combination with a door, of a latch comprising a pivotally-mounted member having a downwardly-projecting bolt at one side of the pivot thereof and a curved operating arm projecting at the opposite side of said pivot, `a keeper adapted to cooperate with said bolt, a swinging arm movable into position to engage said latch and lock it in operative position, and means associated with said swinging arm for sealing the latch in its operative position, the pivot of said swinging arm being substantially concentric with the curvature of the operating arm.

6. A latch comprising a case, a swinging latch member pivotally mounted therein and having a downwardly-projecting bolt at one side of the pivot thereof and an upwardly-curved operating arm projecting from the case at the opposite side of said pivot, and a locking arm pivotally mounted outside of the case above said curved arm and having means for detachably interlocking with said curved arm, the curvature of said curved arm being substantially concentric with the pivot of said locking arm.

7. A latch comprising a case, a swinging latch member therein, and means located over and operated by the swinging of said latch member for supplying lubricantl thereto.

8. A latch comprising a case, a swinging latch member therein, a receptacle in the upper part of said case for containing lubricant, and means operated by the swinging of said latch member for supplying thereto lubricant from said receptacle.

9. A latch comprising a case, a pivotallymounted latch mem-ber therein having a head at one side of the pivot thereof and an operating arm, and a receptacle in said case for lubricant, said receptacle having an opening lying in the path of said head whereby when said latch member is swung lubricant will be supplied thereto Jfrom said receptacle.

10. A latch comprising a case, a pivotally mounted latch member therein having a head at one side of the pivot thereof and an operating arm, a rib carried by said head, and a receptacle in said case for lubricant, said receptacle having an opening in the path of said rib whereby when said latch member is swung lubricant will be supplied thereto from said receptacle.

WILLIAM S. WITTEN.