Locking system and lock therefor

Claim 2

In a locking system, the combination comprising a railroad car, a door providing access to the interior of said car, an upper rail means for slideably guiding said railroad door for sliding between an open and closed position, a lower rail means for slideably supporting and guiding said door, an aperture formed in one of said railroad rail means, a removable locking means including a lock having a portion extending from an exterior side of said one rail means into said aperture and projecting to said interior side of said one of said rail means, said locking means being exteriorly positioned on said one of said rail means for blocking said door against sliding from said closed position to said open position, means on said lock operable by a key to turn outwardly into locking position with said one rail means to prevent removal of said lock from said aperture whereby said locking means is secured to said one railroad car rail means in position for preventing opening of the car door, said means on said lock being turnable by said key to turn inwardly for removal from said aperture and removable of said locking means from said one rail means.

Claim 3

A locking system in accordance with claim 1 in which said lock comprises a body having an interior cylindrical portion for insertion into said aperture of a first diameter and an exterior portion of a larger dimension than said aperture at said one side of said one rail means to prevent pushing of said lock through said aperture.

Claim 4

A lock in accordance with claim 2 in which said means on said lock comprises a plurality of inwardly and outwardly movable elements, said elements being movable from an inward position within the diameter of said interior portion to allow insertion and removal of said interior portion through said aperture, said elements being movable to said outer position to extend outwardly of said diameter of said interior portion to prevent pulling of said lock from said aperture.

Claim 5

A locking system in accordance with claim 3 in which said lock further comprises a turnable cylinder within said lock body, said cylinder being turnable within insertion of a proper key, said movable elements being connected to said cylinder and being movable outwardly when said cylinder is turned into a locking position and being moved inwardly to the inward position when said cylinder is turned to its unlocked position.

Claim 6

A locking system in accordance with claim 3 in which said lock further comprises a cap for telescoping over an inner end of interior portion to protect said movable elements, said cap having means cooperable with said movable elements to hold said cap against removal from said lock body while said movable elements are in an outward locking position.

Claim 7

A locking system in accordance with claim 4 in which said locking means further comprises a removable stop having a portion thereof positioned in the path of movement of said railroad car door for abutment with said railroad car door, said stop being secured to said railroad car by said lock to prevent the opening thereof.

Claim 8

A locking system in accordance with claim 6 in which a cap is provided for telescoping on the inner end of said lock body, first and second axially spaced chambers are formed in said cap each for receiving said movable elements, said first chamber receiving said movable elements when locking said stop to said railroad car, said second chamber receiving said movable elements when said stop is not in use with said lock.

Claim 9

A locking system for a railroad car comprising a railroad car body, track means on said car body including a lower rail for guiding said car door between open and closed positions, downwardly extending hooks on the lower portion of said car door hooked under said rail, an aperture formed in said rail adjacent one of said hooks when said car door is in a closed position, a removable lock having an interior smaller diameter portion projected into said aperture in said rail with an inner end thereof extending rearwardly of said rail, a removable cap telescoped on and covering said rearward end of said lock body, and means on said interior portion of said lock body movable into locking engagement with said cap to prevent the pulling of said lock from said aperture and removal of said cap, and key operable means in said lock for shifting said meanS into locking engagement with said cap.

Claim 10

A locking system for a railroad car comprising a railroad car body, track means on said car body including a lower rail for guiding said car door between open and closed positions, downwardly extending hooks on the lower portion of said car door hooked under said rail, an aperture formed in said rail adjacent one of said hooks when said car door is in a closed position, a removable lock having an interior smaller diameter portion projected into said aperture in said rail with an inner end thereof extending rearwardly of said rail, a removable cap telescoped on and covering said rearward end of said lock body, and means on said interior portion of said lock body movable into locking engagement with said cap to prevent the pulling of said lock from said aperture and removal of said cap, and key operable means in said lock for shifting said meanS into locking engagement with said cap.

Claim 11

A locking system in accordance with claim 8 in which said cap is provided with an annular chamber for receiving said movable elements and is freely turnable on said locking body and in which said key operable means comprises a turnable lock cylinder for swinging said movable elements between an inner position radially inward of said cap chamber and outer position projecting into said cap chamber.

Claim 12

A removable lock for insertion into an aperture in a railroad car for connection thereto to lock the car door against opening, said lock comprising a body having an interior portion for insertion into said aperture, the exterior portion of said body projecting from said car rail to prevent opening of said railroad car door, said exterior portion having a dimension larger than the diameter of said aperture to prevent pushing of said exterior portion through said aperture, an internal locking cylinder in said body turnable between a locked and unlocked position, said exterior portion having a thick encircling wall about said locking cylinder and extending outwardly of said cylinder to define a recessed chamber for limiting access to said locking cylinder thereby protecting the same, a plurality of sector shaped locking elements connected to an inner end of said locking cylinder and having flat, planar, radially extending sides thereon, actuator pins connecting inner ends of said pins to said locking cylinder and located eccentrically of said axis of said cylinder to shift said sector shaped locking elements radially inwardly into said cylinder for removal of said lock from said railroad car aperture and to shift said locking elements radially outwardly to hold said lock on said railroad car, a hollow cap for telescoping onto said inner end of said interior portion of said lock body and for covering said sector shaped locking elements, wall means including a radially extending wall in said hollow cap defining an annular chamber for receiving said sector shaped elements when the latter are shifted radially outwardly into said annular chamber by said locking cylinder, said cap being freely turnable on said interior portion of said body, said flat, planar, radially extending sides on said sector shaped elements engaging said radially extending wall of said cap at sector shaped areas to hold said cap onto said interior end, and a key receiving tumbler on said locking cylinder positioned substantially inwardly in said body and protected by said encircling wall for receiving a key to turn said cylinder.

Claim 13

A removable lock for insertion into an aperture in a railroad car for connection thereto to lock the car door against opening, said lock comprising a body having an interior portion for insertion into said aperture, the exterior portion of said body projecting from said car rail to prevent opening of said railroad car door, said exterior portion having a dimension larger than the diameter of said aperture to prevent pushing of said exterior portion through said aperture, an internal locking cylinder in said body turnable between a locked and unlocked position, said exterior portion having a thick encircling wall about said locking cylinder and extending outwardly of said cylinder to define a recessed chamber for limiting access to said locking cylinder thereby protecting the same, a plurality of sector shaped locking elements connected to an inner end of said locking cylinder and having flat, planar, radially extending sides thereon, actuator pins connecting inner ends of said pins to said locking cylinder and located eccentrically of said axis of said cylinder to shift said sector shaped locking elements radially inwardly into said cylinder for removal of said lock from said railroad car aperture and to shift said locking elements radially outwardly to hold said lock on said railroad car, a hollow cap for telescoping onto said inner end of said interior portion of said lock body and for covering said sector shaped locking elements, wall means including a radially extending wall in said hollow cap defining an annular chamber for receiving said sector shaped elements when the latter are shifted radially outwardly into said annular chamber by said locking cylinder, said cap being freely turnable on said interior portion of said body, said flat, planar, radially extending sides on said sector shaped elements engaging said radially extending wall of said cap at sector shaped areas to hold said cap onto said interior end, and a key receiving tumbler on said locking cylinder positioned substantially inwardly in said body and protected by said encircling wall for receiving a key to turn said cylinder.