US2639180A

US2639180A - Car door lock

Info

Publication number: US2639180A
Application number: US113044A
Authority: US
Inventors: Karl T Nystrom
Original assignee: Standard Railway Equipment Manufacturing Co
Current assignee: Standard Railway Equipment Manufacturing Co
Priority date: 1949-08-30
Filing date: 1949-08-30
Publication date: 1953-05-19
Anticipated expiration: 1970-05-19

Description

May 19, 1953 K. 'r. NYSTROM 2,639,180

. CAR nook LOCK Filed Aug. 30, 1949 v 2 Sheets-Sheet l I INVENTOR.

K. T. NYSTROM May 19, 1953 V CAR DOOR Loci;

Filed Aug. 30, 1949 ==Sheets-$heet 2 INVENTOR.

Patented May 19, 1953 CAR DOOR LOCK Karl T. Nystrom, Chicago, Ill., assignor to Standard Railway Equipment Manufacturing Company, Chicago, 111., a corporation of Delaware Application August 30, 1949, Serial No. 113,044

8 Claims.

This invention relates to sliding railway car door and is directed more particularly to the construction of lock for holding said door closed.

The principal object of the present invention is the provision of a hasp pivotally secured at one end to a sliding car door and engageable with a sliding latch on the door jamb and secured in place by a swinging clasp.

It is a further object of the present invention to provide a locking device for such car doors wherein the parts are capable of exerting a closing force upon the door to insure the door being brought to fully closed position.

A further object of the invention is the provision of means whereby when the parts are associated to hold the door in closed position the usual car seal may be applied to insure the parts remaining in that position until the seal is broken.

Other objects and advantages of the invention will appear in the following description thereof.

Referring now to the accompanying drawing, wherein like reference characters indicate like parts:

Figure l is a side elevation of a portion of a railway car sliding door and adjacent door frame illustrating the improved lock associated therewith.

Figure 2 is a top plan view of the lock assembly showing a portion of the door and adjacent door frame in horizontal section.

Figure 3 is an end view of Figure 1.

In the drawings a portion of the sliding door is shown at I, which may be of any acceptable design, on the forward vertical edge of which is mounted the usual spark strip 2 having an arcuate terminus 3, which engages a similarly shaped end 4 of the cooperative strip 5 secured to outer face of door post 6. Upon the door is secured in any desired manner a plate I, the outer end of which is provided with an angle oflset 88 which underlaps and is secured to the similarly shaped offset of spark strip 2. Upon plate 1 is mounted the elongated member 9 having a hooklike portion I!) which passes through registering holes in portions 2 and 8 and terminates in a rightangularly disposed end A hasp I2 is provided having an eye 13 at one end secured in hook II).

A portion of the side sheathing of the car is shown at l5, a vertical margin of which substantially abuts the outer leg I 8 of cooperative strip 5.

To leg I8 is secured the flange 2B of the angular lock bracket, the other right angularly disposed flange of which being indicated at 2|. A pair of parallel spaced arms 22-22 extend inwardly from the upper end of the bracket parallel with flange 20 and terminate in cylindrical embossments 23-23, each provided with an axially aligned hole 24 for reception of journal pin 25. The flange 2| between said arms 22-22 is downwardly and outwardly inclined, as indicated by the dotted lines at 30, Figure 1. At the bottom of the flanges 20 and 2| there is provided an inwardly extending shelf 26, at the outer end of which is a thickened portion 21 through which is an elongated rectangular opening 28, that side of which opening 28 adjacent the flange 2| being downwardly and outwardly inclined, as indicated by dotted lines at 29, Figure 1. This inclined wall 29 occurs in substantially a plane parallel with the inclined portion 30 in the upper portion of the bracket for the purpose hereinafter described.

A latch bar 35 is provided having an edge thereof provided with spaced downwardly and inwardly inclined portions 36 and 31, which portions are inclined in the same degree and adapted to engage respectively the inclined surfaces 30 and 29 of the bracket. Latch bar 35 is also provided with an elongated slot 38 opposite to and paralleling inclined surfaces 36 through which slot 38 the pin 25 extends to thereby pivotally and reciprocally suspend the latch bar between the embossments 23 with the lower end of said bar extending through opening 28. Projecting laterally from the upper end of the latch bar is a lug 39 which may be used as a striking arm to force the latch .35 downwardly or upwardly to or from position within the bracket.

The end of the hasp l2 opposite hole l3 therein is provided with a hook portion 40 which, when latch bar 35 is in normal locking position within the bracket, is designed to overlap the latch bar 35 so that when so overlapped a forcing downwardly of the bar 35 sliding against inclined surfaces 30 and29 will exert a closing force on hasp l2 and thereby close the door I.

A dog 42 is also pivotally mounted on pin 25 adjacent latch bar 35 between em'bossments 23, this dog having an outwardly oifset portion 43, overlapping hasp I2 when assembled, as shown in Figure 1, and terminating in a hook portion 44 having one closed side (see Fig. 3) so as to slidingly underlap the downwardly protruding lug 45 on forward end of portion 21 of bracket 20. When thus assembled, as shown in Fig. 3, a substantially continuous inclined slot 46 extends through the hook portion 44 and lug 45, through which slot may be applied the usual car 3 seal, not shown, to seal the car door in closed position when desired.

Thus when the parts are assembled as shown in the drawings with the latch bar 35 raised, the hasp I2 in position with end 46 thereof overlapping th latch bar, and the dog 42 overlapping the hasp and hooked over the depending lug 45, a forcing downwardly of said latch bar 35 will cause the inclined surfaces 35 and 31 thereof to slide on correspondingly inclined surfaces 30 and 29 of the bracket, thereby exerting a pulling force on the hasp l2 which draws the door to fully closed position. In this position the parts forming inclined slot 46 are in alignment when a car seal may be passed therethrough to seal the car door closed.

I claim:

1. A look for a sliding door comprising a bracket adapted to be secured to a stationary member associated with said door, a latch slidably supported by bracket, a hasp adapted to be swingably mounted upon said door and having a hook portion engageable with said latch, and a dog supported upon said bracket so as to engage said hasp when in hooked relation with said latch and hold said hasp in said hooked relation, said bracket supporting a journal pin on an axis at right angles to the plane of said stationary member, said latch and said dog supported on said journal pin.

2. A lock for a sliding door comprising a bracket adapted to be secured to a stationary member associated with said door said bracket having spaced arms supporting a journal pin, a latch. pivotally and slidably supported upon said pin, a hasp adapted to be swingably mounted upon said door and having a hook portion engageable with said latch, and a dog supported upon said journal pin so as to engage said hasp when in hooked relation with said latch and hold said hasp in said hooked relation.

3. A lock for a slidin door comprising a bracket adapted to be secured to a stationary member associated with said door, said bracket having angularly disposed flanges, parallel arms extending from one of said flanges, a journal pin supported by said arms, a latch pivotally supported by said pin between said arms, a hasp adapted to be swingably mounted upon said door and having a hook portion selectively engageable with said latch, and a dog pivotally mounted upon said pin between said arms and swingable in a plane parallel with said door so as to overlap said hasp when in hooked relation with said latch and hold said hasp in said hooked relation.

4. A lock for a sliding door comprising a bracket adapted to be secured to a stationary member associated with said door, said bracket having spaced arms supporting a journal pin therebetween, a latch pivotally and slidably supported by said journal pin, a hasp adapted to be swingably mounted upon said door, and selectively engageable with said latch, and a dog pivotally mounted upon said journal pin and swinga'ble in a plane parallel with said door so as to overlap said hasp when in hooked relation with said latch and hold said hasp in said hooked 4 relation, said bracket and latch having correspondingly inclined engaging surfaces arranged so that a sliding movement in one direction of said latch in said bracket exerts a pulling force on said hasp and door to draw the door to fully closed position.

5. A bracket adapted to be secured to a stationary member associated with a sliding door, said bracket comprising angularly disposed flanges, parallel arms extending from one end of one of said flanges and terminating in annular embossments having aligned openings therethrough to receive a pivot pin, the flange, between said arms, being inclined to the plane of the remainder of said flanges, a shelf extending within the area included between the other end of said flanges, said shelf having an opening therethrough, one wall, defining said opening, being inclined correspondingly to the inclined surface between said arms.

6. A lock for a sliding door comprising a bracket having spaced arms supporting a journal pin, a latch having an elongated opening therein for swinging and limited longitudinal movement on said pin, a hasp adapted to be swingably mounted on said door and having a hook portion engageable with said latch, and a dog supported on said journal pin so as to optionally engage said hasp when in said hooked relation with said latch and hold said hasp in said hooked relation.

'7. A bracket adapted to be associated with a stationary member associated with a sliding door, said bracket comprising angularly disposed flanges, parallel arms extending from one end of one of said flanges, the flange, between said arms, being inclined to the remainder of said flange, and a shelf extending within the area included between the other end of said flanges. said shelf having an opening therethrough, one wall, defining said opening, being inclined correspondingly to the incline between said arms.

8. A lock for a sliding door, comprising a bracket having angularly disposed flanges, parallel arms extending from one of said flanges, the flange, between said arms, being inclined to the remainder of said flange, a journal pin supported by said arms, a latch having a diagonally disposed slot therethrough for pivotally and slidably mounting said latch upon said journal pin, one edge of said latch having an inclined surface, parallel with the plane of said slot, and slidingly engageable with the surface between said arms, a hasp adapted to be swingably mounted upon said door and having a hook portion selectively engageable with said latch, and a dog pivotally mounted on said journal pin soas to optionally engage said hasp when in said hooked relation with said latch to hold said hasp in said hooked relation.

KARL T. NYSTROM.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,976,913 Beauchamp Oct. 16, 1934 2,478,688 Ditchfield Aug. 9, 1949