US1658762A

US1658762A - Latch mechanism

Info

Publication number: US1658762A
Application number: US31515A
Authority: US
Inventors: Dickerson George
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-05-20
Filing date: 1925-05-20
Publication date: 1928-02-07
Anticipated expiration: 1945-02-07

Description

Feb. 7, 1928. 1,658,762

G. DlcKERsoN v LATCH MEGHANI SM Filed May 20, 1925 Patented Feb. 7, 1928.

UNITED STATES PATENT foEFlcE.

GEORGE DICKEBSON, l' CLEVELAND, OHIO.

LATCH MECHANISH.

Application led lay 20, 1925. Serial No. 31,515.

My invention relates to means for locking objects to each other by means of a latch mechanism.

One object of my inventionis a simple and efficient latch mechanism.

Another object of my invention is a simple and efficient latch mechanism having a double lock and a seal means.

Another object of/my invention is a latch lo mechanism which remains locked even when the final seal is not present.

Another object of my invention is a latch mechanism which remains locked when the lockable members are shaken or vibrated or I6 rattled.

In many instances two members are to be locked to each other and one or both of these members shake or vibrate or rattle in such a manner that the latch mechanism unlocks itself. Latch mechanisms for such members,

as previously made, had no means for preventing the unlocking of the latch mechanism by the rattling or otherwise moving of the members.

The present invention aims 'to prevent such rattling or other movement of the members from unlocking the'latch mechanism.

My invention is sutliciently illustrated in the accompanying drawing in which my invention is shown as embodied in a atch mechanism for a freight car door and in which y Fig. 1 is a general perspective view of a certain latch mechanism applied to the sliding door of a freight car; all members are shown in locked position.

Fig. 2 is a section taken on a plane indicated by the line 2 2 in Fig. 1 and shows the manner of attaching the bolt to the plate.

Similar reference characters refer to similar parts throughout the views.

The latch mechanism shown in the accom panying drawing comprises, principally, the plate A, the bracketB, the bolt C, the bolt D, the stud E, and the stud F.

The plate A is secured tothe sliding door G by means of the bolts 10.

The bracket B has the body portion 11 secured to the frame H of the-opening for the door G by means of the bolts l2. The ear 13 extends upward from the body 11 and vhas the opening 14 therethrough. The ear 15 extends upward from the body 11, adjacent to the ear 13. 55 The body portion 16 of thebolt C slides 'or when stopping or startin on the plate A and has the slot 17 therethrough and the nose 18 of the bolt C extends through the opening 14 of the ear 13 when the bolt C is in locking position.

The stud E has the'reduced end 19 (Fig. 2) riveted to the plate A and also has the round middle portion 2O adapted to the slot 17 and also has the head 21 to retain the bolt C on the plate A and to permit the bolt C to slide longitudinally on the plate A.

The body portion 22 of the bolt D slides on the ear 15 and has the slot 23 there-- through and the nose 24 of the bolt D eX- tends through the opening 25 in the nose 18 ofthe bolt C when the bolts C and D are in locking position.

The noseI 24 has the opening 26 therethrough near the outer end thereof through which is inserted a seal or final lock means as the padlock I shown for instance.

4The stud F is similar to the stud E shown sectionally in Fig. 2 and has the reduced end 2T riveted to the ear 15 and also has the round middle portion 28 adapted to the slot 23 and also has the head 29 to retain the bolt D on the ear 15 and to permit the bolt D to slide longitudinally on the ear 15.

As to operation As previously mentioned, the drawing shows the latch mechanism Vin locked posi# tion.

To unlock the lock mechanism Remove the seal I from the nose 24 and slide the bolt D longitudinally upward until the lnose 24 is out of the opening 25 of the nose 18. Then slide the bolt C longitudinally backward until the nose 18 is out of the opening 14 of t-he ear 13. The latch mechanism is now completely unlockedand the door G can be opened by sliding the same backward in the usual manner.

In order to lock the mechanism Reverse the unlocking operation described.

In the mechanism shown and described, a double lock ,of the latch mechanism is effected which does not unlock easily. The bolt C is locked by the transversely disposed bolt D which is locked by the seal I.

Freight or similar cars are usually provided with sliding doors movable lon 'tudinally of the car. When coupling suc cars such cars, a certain-momentum is create in the door tending t0 move the door longitudinally; the latch mechanism is provided to prevent the 110 door from being opened either by the momentum mentioned or by other means or for various reasons.

Even when the seal I is not inserted into the latch mechanism, the nose of the bolt D remains through the nose of the bolt C due to its own gravity and thereby prevents the bolt C from disengaging the bracket B even when the door is shaken violently or when a lon itudinal momentum is set up in the door.

Iigi previous latch mechanisms, the shaking or the longitudinal momentum of the door permits the bolt to disengage the bracket when the seal is not present whereas, with the present invention, ,the door 'remains locked irrespective of whether the seal is present or not.`

"The bolt C need not slide or swivel on the plate A as shown and described but may be rigidly secured to the door although the door may be locked more conveniently when the bolt C does so slide and swivel. v This sliding and swiveling feature of the bolt C also prevents the same from striking the bracket when the door is being closed and probably break the bracket or the bolt.

1.. In a latch mechanism, two` interlockable bolts individually mounted, one of said bolts having a portion thereof extendible longitudinally through the other and conned therein in all ateral directions, each of said bolts supported on a pivot pin to permit of adjustment of the en aging portions thereof independent'of sai individual mountings thereof. 7

2. In a latch mechanism, two interlockable bolts, one of said bolts having a portion thereof extendible longitudinally through a portion of the other one of said bolts and confined therein in all lateral directions, each of said bolts supported on a pivot pin to permit of adjustment of the e aging portions of said bolts and movab e longitudinally thereon to permit the enga ement and the disengagement of 'said74 bo ts.

3. In a latch mechanism, two interlockable bolts individually mounted, one of said bolts havin a portion thereof entendible longitudina y through a portion 'of the other one of said bolts and confined therein in all lateral directions, each of said bolts suport/ed on a pivot pin positioned in said individual mountings thereof and pivotable thereon to permit of adjustment of the engaging portions of said bolts and movable longitudinally thereon to permit the engagement and the disengagement of said bolts.

4. In a latch mechanism, two interlockable bolts each slidable longitudinally and at an angle to 'the other, one of said bolts having a hole through the same, and the other one 'of said-bolts having a nose extendible through said hole and vconfined therein in all lateral directions by the walls thereof.

5. In a latch mechanism, two interlockable bolts at an angle with each other, one of said bolts having a. hole through the same, and the other one of said bolts having a nose extendible through said hole and confined therein in all lateral directions by the walls thereof; each of said bolts being supported on an individually mounted pivot pin and pivotable thereon to permit of adjustment of said nose and of said hole and movable longitudinally thereon to permit the engagement and the disengagement of said bolts.

6. In a latch mechanism, two interlockable bolts each of said bolts having a nose and a hole through the same, one of said bolts mounted to be moved longitudinally to move said hole in the nose thereof into position to receive said nose of the other one of said bolts, the other one of said bolts mounted to be moved longitudinali to extend the nose thereof through an out of said .hole in said one bolt, said nose of said other bolt being confined in all lateral directions by the walls of said hole through the nose of said one bolt, and said hole in said other bolt adapted to receive a seal means.

7. In a latch mechanism, a bracket having an ear and a hole through the ear, a bolt having a nose extendible through and out of said hole longitudinally and confined therein laterally in all directions by the walls thereof and having a hole through the nose, and a bolt having a nose extendible through and out of'said hole throu h the nose of the first mentioned bolt and adjacent to said ear and having a hole through the nose thereof to receive a seal. .I

8. In a latch mechanism, a pair of brackets mountable on members movable in relation to each other, one of said brackets having an ear and a hole through the ear, a bolt movably supported on the other one of said brackets and having a nose extend- `ible through and out of said hole in the cai' and having a hole through the nose, said nose being confined in all lateral directions by the walls of said hole in the ear, a bolt movably supported on said one bracket' and l ce lli

having a nose extendible through and out of said hole in the nose of the iirst mentioned bolt adjacent to said ear and having a hole through the nose thereof to receive a seal, and said nose of the second mentioned bolt conlined in all lateral directions by the walls of said hole through the nose of the first mentioned bolt.

9. In a latch mechanism, a pair of brackets vmountable on members movable in relation to each other and each having a pivot pin, one of said brackets having an ear and a hole through the ear,ya bolt supported on said pivot pin in the other one of said brackets and pivotable and longitudinally movable thereon and'having a nose extendible through and out of vsaid hole in the ear and having a hole through the nose thereof, said nose being confined in all lateral directions by the walls of said hole in the ear, a bolt supported on said pivot pin in said bracket with the ear and having a nose extendible through and out of said hole in the nose of the first mentioned bolt 10 adjacent to said ear and having a hole through the nose thereof to receive a, seal, and said nose of the second mentioned bolt conned in all lateral directions by the Walls of said hole through the nose of the first 15 `mentioned bolt.

GEORGE DICKERSON.