US755511A - Grain-door for cars. - Google Patents

Description

PATENTED MAR. 22, 1904.

J. B. MAOLAUG'HLIN. GRAIN DOOR FOR CARS.

APPLIGATION FILED SEPT. 29, 1903.

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UNITED STATES Patented March 22, 1904.

PATENT OEErcE.

GRAIN-DOOR FOR CARS.

SPECIFICATION forming part of *Letters l atent No. 755,511, dated March 22, 1904. Application filed September 29, 1903. Serial No. 175,039. (No modeL) To all whom it may concern:

Be it known that I, JOHN BEVERLY MAC- LAUGHLIN, acitizen of the Dominion of (Janada, residing at the city of Vancouver, in the Province of British Columbia,Canada, have invented a new and useful Improvement in Grain-Doors for Cars, of which the following is a specification.

i My invention relates to an improved car grain-door which has been designed as a supplementary provision for use on box-cars when such are employed for grain haulage; and my object has been to provide a door that when not required will form no obstruction to the ordinary doorway of the car, that will for obvious reasons have the constructive and operative features of the box-car door in common use, and that can readily be applied to existing cars without any structural change thereof.

A further and important feature in this invention lies in the provision of an auxiliary or relief door of small size toward the lower middle part of the grain-door proper, which relief-door, being of small size, can be readily opened to permit the escape of the grain from the proximity of the main door and relieve the pressure against it, which would otherwise render it hard to open.

The particular manner in which these several objects are attained and the operation of the door are fully set forth in the following specification, reference being made to the accompanying drawings, in which Figure 1 is an elevation from within of the doorway, showing the supplementary graindoor and its housing. Fig. 2 is an enlarged vertical section through the door on the line a a in Fig. 1, and Fig. 3 is a detail section of the telescopic track-rail on which the door is hung.

In the drawings, 2 represents the siding of the car, the flooring being indicated by 3, the roof-sill by 4, and the door-posts by 5 and 6, 2 being the reinforced siding used where a car is intended to be employed as a grain-carrier.

The supplementary door 7, which is the subj ect of this application, is altogether independent of the ordinary door of the car, being slidably mounted within the siding of the car,

and is of sufiicient height only to satisfy the requirements of the highest grain-level. The door is hung in the usual manner by sheaves 8 from a rail 9 10. This rail is made in two lengths 9 and 10, slidable one on the other, so that when the grain-door is not required the portion 9 which extends across the doorway may be slidably shipped within the housing 11 over the portion of the rail lOon whichthe door runs within the housing. The manner in which I prefer these two portions of the rail 9 and 10 to be slidably telescopic is indicated in Fig. 3, the portion 9 having its upper edge bent over, as 9, toengage the upper edge of the fixed rail portion 10. With this construction the stronger section 9 is that which bridges the doorway when in use and which the flanges of the carrying-sheaves more closely fit.

The door may be framed in any suitable manner, but is preferably made double, as shown in Fig. 2, as affording a convenient means for housing between its thicknesses the relief-door 12. This relief-door closes an opening 13, centrally situated toward the lower edge, and is preferably made in two sections, each half being pivotally mounted toward its outer lower corner, as at 1A, and provided with a hand engagement, as 15, by which they may be opened apart, as indicated by the dotted path-lines in Fig. 1, where one half of the door is shown closed and the left-hand half partially open.

12 12 are combined wear and reinforcing plates over the opposite edges of the opening 12.

I do not desire to be confined to the particular pivotally-opening relief-door illustrated, as such door may occupy the whole width of the grain-door proper and be slidable vertically within or on the face of it.

When the car is to be used for carrying grain, the rail portion 9 is drawn out and removably secured to the bracket 6, mounted on the door-post 6 by a pin 6, that joins the rail 9 with the bracket 6*, as clearly shown in Fig. 1. The supplementary door may then be run out to close the doorway to the graincarrying level. When such a door is in use,

the weight of grain in contact with the inner surface would form a serious hindrance to its being moved, and to relieve the pressure against it the auxiliary door 12 is opened and suflicient grain will escape from the opening 13 to free the main door 7 from the lateral pressure and permit of its being pushed within the housing 11.

When the car is required for the ordinary use of a box-car, the door is pushed within the housing 11, and the doorway extension 9 of the track-rail is also shipped therein on the portion 10, which is permanently secured there. An important advantage of the door construction here revealed lies in the fact that the movement of neither the door 7 nor its relief-door 12 is hindered by any necessity for grain displacement, as the doors slide direct within their housings and the lateral friction only is to be contended with.

Having now particularly described my invention and the manner of its operation, I declare that what I claim as new, and desire to be protected'in by Letters Patent, is

1. The combination with a car having the usual door-opening in the side thereof, and a rail slidable across the said opening and connected to the car-body; of a supplementary door slidable on the inner side of the car over the usual door-opening and supported upon the said rail for endwise sliding movement, said supplementary door having an opening and a closure member upon said supplementary door for closing the opening therein.

2. As a grain-door for box-cars, a supplementary door slidable on the inner side of the car across the existing doorway, a rail adapted to sustain the running-sheaves of such door, which rail is slidable endwise telescopically together that the portion across the door may be removed therefrom.

3. As a grain-door for box-cars, a supplementary door slidable on the inner side of the car across the existing doorway, a housing against the vinner side of the car to receive such door and shield it from the grain within the car and a rail on which the door is hung by means of sheaves, such rail being in two sections, the section across the doorway being slidable endwise on the section within the housing, substantially as and for the purpose specified.

4. For a car of the character described; a supplementary door slidable across the inner side of the main door-opening in the said car, the said supplementary door having a reliefopening and a hollow chamber in communication with the said relief-opening, and a 010- sure part mounted in the said hollow chamber to close over the relief-opening, as set forth.

5. A supplementary door for grain-cars slidable across the inside of the usual doorway thereof, said supplementary door having hollow spaces which extend lengthwise thereof, and a relief-opening in communication with the said spaces, a pair of pivoted door-sections mounted within the spaces of the supplementary door adapted to fold back into the a said spaces when turned to their open position.

6. As a supplementary grain-door for cars, the rail 10 secured within the car-siding, the rail 9 slidable telescopically on 10, the door 7 carried by sheaves 8 on the rails 9, 10, the housing 11 to inclose the door when run clear of the doorway,the relief-opening 13 closable with doors l2 pivotally mounted on pins 14:, all substantially as described:

In testimony whereof I have hereunto signed my name in the presence of tWo subscribing Witnesses.

JOHN BEVERLY MACLAUGHLIN.

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