US1638166A - Hopper door for railway cars - Google Patents

Description

Aug. 9,1927. 1,638,166

I v. E. SISSON HOPPER DOOR FOR RAILWAY CARS Filed Aug. 10, 1925 Evezuar:

Patented Aug. 9,1927. r 1,638,166 UNITED STATES PATENT OFFICE.

VINTON E. sIssoN, or CHICAGO, ILLINOIS, AssIGNon TO UNION METAL rnonuo'rs COM- PAN'Y, or c IIcAeo, ILLINOIS, A CORPORATION or DELAWARE.

HOPPER noon non RAILWAY CARS.

Application filed August 10, 1925. 'serial'No. 49,295.

The invention relates to a railway dump car having a door forming a part of the car for retaining the load therein which door is provided with hinges'adjacent one of its edges and is capable of beingdropped;or swung open so that the load in discharging slides or passes oventhe upper surface'of the door. Any means of raising the door to the closed position and any means for locking and releasing the door may be employed with my device- Experience has shown that a slight pro-.-.

jection on the upper surface of such a door causes the discharging load to bank up- (and other parts of the car) and service conditions also regulate the inclination of the door after it is dropped,'so that it is seldom'possible to allow the doors to drop to a vertical position in fact in a drop-bottom gondola car the doors are'positione'd only about 30 degrees from a horizontal plane when in open position. v

A door for this purpose must be very strong and durable because:

First, it is apartof the floor. of the car and as such must sustain theload as well as the impact blow of the load when the car isin motion. Second. the car is frequently loaded from chutes or tipples from'a height of tenfeet or more, causing the load to be dropped directly upon the doors. Third, clam shell buckets are frequently used to unload such cars and it is not uncommon for these buckets to rest upon and dragover thedoors. Fourth. when the door suddenly comes to rest after being dropped. it is not only subjected to a severe shock but it must sustain the severe impact thrust of the load which of course follows the door. Fifth, as the load is theoretically equally distributed, the door must be strong over its entire area and must be capable of transmitting the resulting stresses to the car body,

without much deflection and no substantial distortion. Any bending of the door or drooping of the corners would cause a leak of the lading, especially of such fine'materlal as sand, chats, etc. Any bending or warping might interfere with the complete closing and locking of the door.

As it costs as much to haul a ton of car as' t does to haul a ton of paying freight, it is lmperative that the car and any part thereof be as light as possible. Furthermore, the total weight of the car and freight is determined by the strength of certain standard axles, so that the lighter the car the greater amount of freight a given car'will be allowed to carry. Y 7

Various means have been used to strengthen a plate metal doorto meet the service conditions. Reinforcements have been secured to the door thus materially increasing'its weight which is objectionable. Various integral reinforcements (such as corrugations) have been formed in metallic plates which however, interfere with the discharge ofthe loading or'have other objectionable This last feature is accomplished by the peculiar and particular configuration of thocorrugation.

1. One of the objects of the invention is to obtain a strong durable door for a load discharging freight car made of a metallic plate formed with integral corrugations.

which are positioned approximately normal to the direction of discharge of the lading but are of'such configuration as not to interfere with the movement of the cargo when leaving the car. I

2. Another object of the invention is to provide an arrangement whereby the corrugations are positioned substantially nor- Continuous beams sup 7 the car, such as drop bottom general service inal. to the supporting hinges and yet will not interfere with the discharge oi? the lad ins.

Another object of the. invention is to attach the hinges to the corrugated door so fl. Another object of theinvention is to" obtain a door reinforced by corrugations which strengthen the entire area of the door which supports the load.

The advantages of: my door are applicable to any door of a freightear over, which the lading mo'ves when, being discharged from cars (used in the drawings) hopper cars, swinging side doors or hopper bottom coal cars, etc.

For convenience of illustration and ease of description, straight lines have been used-to show the corrugations however. it is understood that curves or a series of curves may be used and still come within.

. ure 1.

Figure 5 an enlarged section 01" the corrugation. Fig. 6 shows the hinge relation to the door.

To illustrate one adaptation of my device, I have shown so-called general service drop bottom gondola car wherein the major portion of the floor consists of drop doors. The door openings are surrounded by the cent-er constructiomside wall and cross diaphragms. In normal or closed position the door completely closes this opening and in fact is a trifle larger on all sides than the opening so as to provide a lap joint between the door and the car frame members. The hinge beams are hinged to the center construction and are supported adjacent the side wall by the raising of locking mechanisms. Any convenient stop, such as 2, may be used to limit the downward movement of the door.

The door is made of a metallic plate (preferably steel) which is reinforced with integral corrugations 3 resting upon hinge beams 4. the corrugations extending; continuously their full depth between the hinges and then decreasing in depth (5). and merging into the original. plane of the plate 6 and preferably inclose proximity to the stitiehingflanges 7, which are formed atthe opposite edges of the door. This arrangebetween the" opposite edges of the door and preferably under the adjacent cross diaphragnis (forming the opposite edges of the door opening) as shown m Figure .4, so asto reinforce the entire part of the door upon which the cargo rests.

The contour of the corrugationsis such that when the doors are in opener dropper position the corrugations will not interfere with the discharge of the lad-ing; Forconvenience, Ihav'e described the corrugations as comprising an inner w-all 30 and an outer wall 31., i. e, the inner wall is the one-positioned near the inside edge or hinge edge of the door. The outer walls are preferably wider and positioned obliquely to the orig 1113i plane of the plate.

such that when the doors are open these .walls are inclined towar'dthe outeredge ol" the door, e, the angle or slant of the'plate of the outer walls (asshown by ]ine.12l2) The obliquity is will not permit. the lading to stay thereon, j and furthermore, the outer wall chutes the cargo over the inner .wall or web of the itCljacent corrugation, so thatthe inner wall does not retard themovement of the; cargo. The corrugations have sloping inner walls 30 and sloping outer walls 31.. The outer walls are preferably wider than the inner walls so as to increase the angularitv of these inner walls from a horizontal plane when the door is in open position (ii of; line 1212- on Figure It is preferable-to joggleandto attach-the hinge to theJinner wall (as shown in Figure; 6) asany rivet head in the outer wall would not be pro tected from the movinggloadiby the inner wall. 7 1 j l i What I claim is:

1. A doorfor a 'railway car made of a metallic plate formed with corrugations; each of said corrugations con iprising an innor wall and an: outerwall positioned obliquely tothe original plane ot the plate. said inner wall. being narrower than said outerwall. 1 g f 2. In combinationwiththe othenelements of a railway dump car; a door made of a matallic plate formed with corrugations. each of said corrugations comprising in nor wall and an outer wall positioned obliquely to the original plane of theplat'e, said inner wall being outer wall. 7

In combination with-the other elements of a railway dump car, ,a door made of a narrower than saidmetallic plate formed with corrugations hinges attached. tothe carbody-ex-t-ending normal to said corrugations and secured to said inner walls.

4. In combination with the other elements of a railway dump car, a door made of a metallic plate formed with corrugations comprising inner and outer walls,'the outer walls being of such angular relation to the original plane of the plate that when the door is in open position said outer walls are inclined toward the outer edge of the door and hinges attached to the car body extending normal to and secured to said corrugations.

5. In combination with, the other elements of a railway dump car, a door made of a metallic plate formed with corrugations comprising inner and outer walls, the outer walls being of such angular relation to the original plane of the plate that when the door is in open position said outer walls are inclined toward the outer edge of the door and hinges attached to the car body extending normal to said corrugations and secured to said door.

6. In combination with the other elements of a railway dump car forming the opposite v 8. In combination with the other elements of a railway dump car forming the opposite edges of a door opening, a door made of a metallic plate formed with corrugations which extend continuously between and beyond said opposite edges oft-he door openingand hinges attached to the car body extending normal'to said corrugations, said corrugations extending continuously their full depth between said hinges, and decreasing in depth and merging into the original plane of the plate close to the stiffening gauges formed at the opposite edges of the oor.

9. In combination with the other elements of a railway dump car; a door made of a metallic plate formed with corrugations terminating within the edges of the plate, each of said corrugations comprising an inner wall and an outer wall positioned obliquely to the original plane of the plate,

said inner wall being narrower than said prising an inner wall and an outer wall positioned obliquely to the original plane of the plate, saidinner wall being narrower than said outer wall.

VINTON E SISSON.

till

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