US1331131A - Lock for railroad-car doors - Google Patents

Description

H. URBAN. LOCK FOR RAILROAD CAR DOORS.

APPLICATION FILED SEPT-25.1919.

Patented Feb. 17,1920.

EFLLEE INVENTOR. Henry Urban BY QZ/JW/(Zr L- ATTORNEY.

. llTED STATES PATENT GFFICE,

HENRY URBAN, 0F VIAS -IINGTON, PENNSYLVANIA.

LOCK FGR RAILROAD-CAR DOORS.

Application filed September 25, 1919.

county of lVashington, and State of Pennsylvania, have lnvented certain new and useful Improvements in Looks for Railroad- Car Doors, of which the following is a specification.

This invention has for its object the provision of means whereby sliding doors of the type used in connection with freight cars may be secured when in a closed position in an effective manner or released therefrom as desired.

This object is attained by the novel construction and combination of parts hereinafter described and shown in the accom panying drawings, forming a material part of this disclosure, and in which Figure 1 is a side elevational view showing a conventional type of car and indicating the application of the invention.

Fig. 2 is an enlarged front elevational view showing a fragmentary portion of the door and the jamb, together with the look parts applied thereto, and

Fig. 3 is a vertical sectional view taken on line 33 of Fig. 2.

Referring to the drawings in detail the numeral 10 indicates a sliding door arranged to move between guideways 11 and 12, respectively at the top and bottom, while the numeral 1 1 designates the wall in which the door opening is formed.

Secured upon the outer side of the wall is an elongated strip 15 while upon the inner side of the wall is a casing 16 containing a chamber 17 for the mechanism.

The lock is comprised of a pair of handles 18, respectively upper and lower, formed with bars 19, which pass through the walls 1 1 closely adjacent to the strip 15 and carry at their outer ends enlarged heads 20 entering the chamber 17.

Formed with or secured to the bars 19 are cams 21 adapted to engage over the edge of the strip 15 when the handles are drawn outwardly and turned so as to extend horizontally.

Fixed upon the upper surface of the wall 14, within the chamber 17 is a plate bracket 22, having raised lugs 23 at its ends and on the plate 22 is a spring plate 2 1 through which pass securing means 25 holding the Specification of Letters Patent.

Patented Feb. 17, 1920.

Serial No. 326,355.

several plates firmly to the inside of the wall.

The ends of the plate 24 act as spring elements 26, terminating in pads 27 containing rigid pins 28, which, due to the spring effect of the plate, are maintained normally against the inner surface of the wall 14, said rigid pins engaging openings 29 formed in the ends of offset strips 30, secured at their opposite ends by screws or like fastenings 31, to the inner side of the sliding door 10. Thus when the pins are engaged in the openings 9f the strips the doors are held against movement.

Partially encircling the bars 19, adjacent to the heads 20 are loop eyes 32, formed with wire rods 33, turned angularly as at 34, and then passing through openings formed in lugs 23, bent outwardly, as at 35, parallel with the elements 33, then bent again inwardly as at 36, these elements extending below the terminals 27 and forming in effect lever arms operable by the handle levers 18.

In operation when it is desired to close and lock the door, the handles 18 are drawn outward and turned horizontally, raising the pins 28 so that the doors may be closed, allowing the strips 30 to enter the casing until the openings 29 coincide with the pins, whereupon the handles are turned oppositely one to another, permitting the pins to enter and lock the door.

If it is desired to maintain the device in an unlocked position the handles, when turned outwardly, cause the cams 21 to engage with the outer edge of the strip 15 holding the parts disengaged.

From the foregoing it will be seen that an effective lock of the class disclosed has been described by which sliding doors of the type mentioned may be secured in a locked position or unlocked in an easy and convenient manner.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is

In a lock of the class described, the combination with the wall of a building, a door slidably arranged to cover an opening therethrough and a jamb secured upon said wall against which said door may make contact, of a casing secured upon the inner side of said Well, a bracket fixed upon the wall within said casing, 21 pair of oppositely disposed levers pivotally mounted in the ends of said bracket, a plate spring disposed over said bracket, pins carried at the ends of said plate spring, means formed with said levers adapted to extend below said spring ends whereby they may be raised, bars movable transversely through said wall, said bars having heads adjacent to the inner ends of said levers, handles formed upon the outer ends of said bars by which they may be withdrawn, means formed on said bars adapted to hold said levers when in a retracted position, and strips secured upon the door adapted to enter said casing, said strips having holes engageable by said pins.

In testimony whereof I have aflixed my signature.

HENRY URBAN,

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