USRE7328E - Improvement in grain-doors for railway-cars - Google Patents

Description

.H. H. CARD & L. SAFFORD.

GRAIN-IJO0RS FOB. RAILWAY CARS. No. 7,328.' Reissued. Oct. 3,1876.

Fwd.

UNITED v STATES PATENT OFFICE.

MILES H. ohm), or FREEPORT, AND Evr SAFFORD, or omoAoo, ILL.

IMPROVEMENT lN GRAIN-DOORS FOR RAILWAY CARS.

Specification forming part of Letters Patent No. 118,339, dated August 22, 1871; reissue No; 7 328, dated October 3, I876; application-filed SeptemberQ, 1876.

To all whom it may concern,- 1

Be it known that we, MILES H. CARD, of Freeport, in the county of Stephenson and State of Illinois, and LEVI SAFFORD, of Chicago, in the county of. Cool: and State of II- linois, have in ventednew and useful Improvements in Grain-Doors for. Railway-Oars and i we declare that the following is a full and clear description thereof, reference being had to the accompanying drawing, which forms a part. of this specification, and in which- Figure l' 'is a perspective view oionr invention from the interiorof the car; and Fig. 2 is afront elevation from the same point of viem'showingthe dooropeuedr- Like lettcrsbf reference made use of in the several figures indicate like parts. In said drawing, -A represents the side of an ordinary freight-car, such as are used uponrailways for transporting grain. B is the floor thereof; and G the common doorway, shown open. D represents our grain-door hinged to the car at one of its ends in such manner that when swung upon the hinge it moves in an edgewise radial direction, and remains at all times in a plane parallel to the plane of the Side of the car.

The door is inside of the ear, and bears against the car side, which prevents it from giving way to the pressure of the grain.

In order that there may be as little shaking and motion as possibie, and in order that the door'may be held firmly to its place when closed, we form between the door and the car side a connection at the free egglpf the door, extending for the height of"'tli''door. It is essential that this connection shall consist of a lap extending from one of the two partsthe door or the car side-oypr the other, and that it shall be curved inform to accommodate the motion of the door. The connection illustrated in the drawing consists of a double lap of dovetail-curved shoulder-piece, E, in

door.

one part, being placed upon the car side, and of a curvilinear dovetail groove in the other retaining the door in. position when opened,

and K is a button door when closed.

L is a flap or strip of flexible material such as canvas, leather, rubber cloth, or similar substance, secured to the bottom of the door,

or detent for securing the and extending into the car a .short distance to lie upon the floor thereof. When the car is full the weight of the grain upon this flap or lagging makes the joint between the door and the floor tight against leakage, assisted in a measure by the material immediately under the door itself acting as a packing. This flap enables usto dispense with the door sill of t each side of the the troublesome lathing iommonly fitted to g rain-cars Having thus described our invention, what we claim, and desire to secure by Letters Patent, is

l. The, combination, with the imperforate grain-door hinged at one end to the car in such manner as to up end in opening, of a curved shoulder-piece at the other end forming a lap-joint with the door, and connecting the door with the car side, substantially as and for the purposes. set forth. 7

2. The combination, with the lip-ending can door, of the lagging or flap on the bottom of the door, substantially as specified.

MILES B. OARD. LEVI SAFFORD.

Witnesses J oruv W. MUNDAY, Enw. S. EVARTS.

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