US2478688A - Car door lock - Google Patents

Description

F. DITCHFIELD Aug. 9, 1949.

CAR DOOR LOCK Filed May 13', 1948 -/)v VEN Toe- FEQNK D/TCHF/ELD WWW Patented Aug. 9, 1949 CAR DOOR LOCK -.Frank Ditchfield, Cleveland, Ohio, assignor to The.

Youngstown Steel. Door Company, Cleveland, Ohio, a corporation of Ohio Application May 13, 1948, Serial No. 26,781

Claims. (Cl. 292-286) This invention relates to car door locks and V particularly to looks for sliding doors of railway house cars.

It is an object of this invention to provide locks for sliding doors of railway house cars capable of compensating for normal inaccuracies of car construction and obviatingback and forth lashing of the doors when locked. I

A further object is to provide locks for sliding doors of railways house cars which shall embody taperedpins movable vertically when the doors are locked and which shall be so constructed as to positively limit upward movement of the pins.

A further object is to provide locks for sliding doors of railway house cars which shall embody tapered locking pins mounted so as to have both vertically reciprocating and swinging movements.

A further object is to provide locks for sliding doors of railway house cars which shall embody lock brackets carrying pivotally mounted members adapted to extend across vertical reciprocating tapered locking pins carried by the brackets, the lock bracket and members being so constructed and arranged so as to form door seals.

Other objects of the invention will become clear as the description thereof proceeds.

. In the drawings forming part of this specification: v

' Fig. 1 is a fragmentary elevation of double slidin doors of railway house cars equipped with a lock embodying the instant invention.

Fig. 2 is a view similar to Fig. 1 showing the main door after it has been moved the maximum distance in opening direction by an opening and closing lever carried by the lock.

Fig.3 is a horizontal section taken on line 33 of Fig. 1.

Fig. 4 is a vertical section takenon line 4-4- of Fig. 1.

'Fig. 5 is a vertical section taken on line 5-5 of Fig. 2.

In the drawings the instant invention is illustrated embodied in a lock designed for application to the main and auxiliary doors I0 and II of a double door construction for railway house cars. These doors may be of any desired construction and as shown the main door is formed with a plurality of spaced horizontal corrugations l2 upon one of which a hasp fastener I3 is seated. The hasp fastener which is reinforced by means of a member |4 disposed within the corrugation is formed with a neck portion l5, the end l6 of which extends through alined openings formed in a vertical corrugation I! of the door and the hasp fastener reinforcement. The hasp fastener I3 swingably supports a hasp I8 by extending through an eye l9 formed in one end of the hasp. The hasp I8 is also formed with a pin engaging shoulder 20 and forwardly of said shoulder with an eye 2| for a purpose which will hereinafter appear. 4

The auxiliary door II is constructed similarly to the main door l0 so as to embody a plurality of spaced horizontal corrugations 22 and a vertical corrugation 23. On the auxiliary door is mounted the lock bracket 24 of the lock as by means of vertical rivets 25 and 26 and horizontal rivets 21 and 28.

The lock bracket 24 which is preferably in the form of a casting is provided with longitudinally spaced flanges 29 and 30. Below these flanges the lock bracket is formed with aledge 3| which carries the angularly related flanges 32 and 33. Forwardly of the ledge 3| the lock bracket 24 is formed with a boss 34 up'onwhich are pivotally mounted a member 35 and an opening and closing lever 36, these being retainedupon the boss by means of a washer W and a rivet 31 extending through the washer, the boss, and the door. The bracket is also formed with a rib 38 for a purpose which will later appear.

A tapered pin 39 is supported between flanges 29 and 30 of the lock bracket in such a manner that it possesses both swinging and limited vertical movement. To this end, the'upper portion of the pin is formed withan elongated slot 40 through which a securing rivet 4| carried by the flanges 29 and 30 extends. In this manner upward and downward vertical. movement of the pin is restricted by the engagement respectively of the rivet 4| with-the lower and upper ends of the slot 40. .At the same time outward swinging movement of the pin about the rivet 4| is provided and, if desired, such movement may be limited by the engagement of arib 42 formed on the'upper edge of the pin with the rib 38' formed on the lock bracket. 'A's'will be apparent from the showing of Fig. 5 of the'drawings the pin may be swung outwardly to such an extent as to permit outward swinging movement of the hasp l8 for disengagement from the lock bracket.

The lock is shown in its door locking position in Fig. 1 of the drawings. In this position the lever 36 is supported upon 'arledge 43 carried by the lock bracket at its forward end and the pivotally mounted member'35 extends across the pin and its free end is supportedzuponthe ledge 3| of the lock bracket. In thispositio'n of the lock, moreover, a boss 44 formed on the operatinglever 86 extends through the eye 2| of the hasp. The

doors may be sealed by means of a seal, not shown, passing through the slot 45 formed in flange 33 and an alined slot 45 formed in flange 41 provided on the pivotally mounted member 35.

In the said position of the lock the shoulder 20 formed on the hasp abuts one edge of the tapered pin 39, thereby preventing separation of the doors. However, should theadjacent edges of the doors be spaced apart when the lock is in the position illustrated, relative movement of the doors toward each other may occur. Such movement will effect disengagement of the shoulder from the pin at which time the pin will I claim:

1. A look for sliding car doors comprising a lock bracket, pivotally supported hasp, a tapered locking pin having a slot therein, a rivet secured to said bracket, said rivet extending through said slot and mounting said pin for swinging and limited vertical movements, a member pivotally mounted on said bracket and adapted to extend across said pin to prevent swinging movement thereof, and a ledge on said bracket adapted to support the free end of said member, said ledge drop by the action of gravity soas to restore such engagement. Movement of the hasp toward the left as viewed in Fig. 1 as the doors approach each other is made possible by means of the clearance provided between the boss 44 formed on the lever 36 and the eye 2! formed in the hasp. The rivet and slot connection between the bracket and the pin permits the pin to be lowered upon such movement of the doors.

It has been found that when cars equipped with locks embodying tapered pins are subjected to impact, there is a tendency for the pins to move upwardly. By means of the instant invention if the pin 39 should move upwardly, such movement is positively limited by the engagement of the rivet 41 with the lower end of the slot 46 formed in the pin. Moreover, as is shown by the dot and dash position of the pin when such engagement occurs, the lower portion of the pin still lies behind the member 35 so that the looking engagement between the pin and the hasp I8 is not disturbed.

Fig. 2 of the drawings shows the relative positions of the main and auxiliary doors after the main door has been moved in opening direction by means of the lever 35.. To accomplish this,

the seal is removedand the member 35 is released from the ledge 31 so that it hangs vertically from the boss 34-. The pin 39 is then swung outwardly about the rivet 4|, the extreme swingin movement being obtained when the rivet is engaged with the upper end of the slot 40 of the pin. The lever 36 is then moved upwardly in clockwise direction so that a thrust is exerted by the boss 44 formed on the lever against the hasp, thereby forcing the main door in opening direction. The hasp is then disengaged from the boss 44 and the opening movemento'f the main door may be completed. Thereafter the auxiliary door may be moved in opposite direction to its open position.

To close and lock the doors, the auxiliary door is closed and the main door moved at least to the position shown in Fig. .2. of the drawings. The hasp is then engaged with the boss 44 on the lever and at this time the pin 39 may be swung inwardly so as to rest upon the hasp. A pull upon the lever in counter-clockwise direction will move the main door toward the auxiliary door and as the shoulder of the hasp moves forwardly beyond the pin, the latter will assume the vertical position shown in Figs. 1 and 4 of the drawings. Thereupon the member 35 may be seated upon the ledge 31 and a seal inserted through the alined slots 45 and 46.

It will be apparent that numerous changes and modifications in the details of the invention will be clear to those skilled in the art. It is intended, therefore, that all such changes and and said free end of said member being formed with slots adapted to receive a door seal, said hasp having a shoulder adapted to have locking engagement with one edge of said pin, said pin in its uppermost vertical position extending behind said member.

modifications be comprehended within this in- 2. A look for sliding car doors comprising a lock bracket, a locking member, a slotted tapered pin adapted to have locking engagement with said member, means on said bracket extending through said slot and mounting said pin for swinging and limited vertical movements, and a releasable member mounted on said bracket and adapted to extend across said pin to prevent swinging movement thereof, said pin in its uppermost vertical position extending behind said releasable member.

3. A look for sliding car doors comprising a lock bracket, a locking member, a tapered pin adapted to hav locking engagement with said member, means on said pin and said bracket for mounting said pin for swinging and limited vertical movements, and a releasable member carried by said bracket and adapted to lie in front of said pin to prevent swinging movement thereof, said pin in its uppermost vertical position extending behind said releasable member.

4. A look for sliding car doors comprising a lock bracket, a locking member, a slotted tapered pin adapted to havelocking engagement with said member, means on said bracket extending through said slot and mounting said pin for vertical and swinging movements, said means being engageable with the lower edge of said slot to limit upward vertical movement of said pin, said means being disposed in the upper portion of said slot to permit outward swinging movement of said pin, and a releasable member mounted on said bracket and adapted to extend across said pin to'prevent swinging movement thereof, said pin in its uppermost vertical position extending behind said releasable member.

5. A look for sliding car doors comprising a lock bracket, a locking member, a slotted tapered pin adapted tohave locking engagement with said member, means on said bracket extending through said slot and mounting said pin for vertical and swinging movements, said means being engageable with the lower edge of said slot to limit upward vertical movement of said pin, said means being disposed in the upper portion of said slot to permit outward swinging movement of said pin, a releasable member mounted on said bracket'and adapted to extend across said pin to prevent swinging movement thereof, said pin in its uppermost vertical position extending behind said releasable member, and means on said lock bracket engaging said pin to limit outward swinging movement thereof.

FRANK DITCHFIELD.

No references cited.

Images