Box car lock
OwnerEk Ong Kar S. Khalsainventor
Life of this patent
Estimating the term…
Abstract
A removably securable locking device especially suitable for use with the loading door of a railroad freight car whereby the rotatable door handle which latches the door in a closed position is secured against unauthorized movement by a two-piece locking device wherein a handle securing portion of an insertion piece encircles a part of the door handle, and then telescopes into a receiving piece which engages a portion of the door gear box such that upon securing the two pieces of the locking device in telescoped engagement, the door handle is locked against movement until the two pieces are moved out from each other a distance sufficient to release the door handle from engagement.
Claims5
A removably securable locking device, mountable on a door to be secured against opening without any permanent attachment thereto, for preventing the rotation of a rotatable handle which is operable in a circular path of movement for opening the door comprising:
- an insertion member extending a first length and mountable on a door to be secured against opening without any fixed attachment thereto when in operative engagement to secure the door,
- said insertion member having a retaining portion at a first end thereof for engaging a portion of a rotatable handle operable in a circular path of movement to open the door which is to be secured to prevent rotation of the handle in a circular path of movement,
- said insertion member further including an insertion portion extending parallel to and spaced from said retaining portion,
- said insertion member being unattached to the door upon which it is mountable and further including a lock receiving portion at a second end thereof,
- said lock receiving portion having at least one opening therein for receiving therethrough the hasp of a lock;
- a receiving member extending a second length which is less than the length of said insertion member mountable on the door to be secured against opening without any fixed attachment thereto when inoperative engagement to secure the door,
- said receiving member being co-axially alignable with said insertion member for receiving therethrough in telescoping relationship said lock receiving portion of said insertion member upon relative axial movement thereof,
- said receiving member having an uppermost open end through which said lock receiving portion of said insertion member is received, and a lowermost open end through which said lock receiving portion of said insertion member is passed to telescopically join said insertion member to said receiving member;
- the first length of said insertion member and the second length of said receiving member being such that said at least one opening of said lock receiving portion will extend outwardly through said lowermost end of said receiving member when said insertion member is inserted into said receiving member when said insertion member retaining portion engages a portion of the rotatable handle and said receiving member is mounted on the door to be secured against opening;
- and
- a stop member secured to said receiving member adjacent to said lowermost end thereof for limiting the axial movement of said insertion member relative to said receiving member when said retaining portion engages the portion of the rotatable handle for preventing the rotation thereof in a circular path of movement.
Dependencies are inferred from the claim text.