US1561029A

US1561029A - Grain door for freight cars

Info

Publication number: US1561029A
Application number: US651236A
Authority: US
Inventors: Joseph A Schmitz; Adyn E Schuyler
Original assignee: Individual
Current assignee: Individual
Priority date: 1923-07-13
Filing date: 1923-07-13
Publication date: 1925-11-10
Anticipated expiration: 1942-11-10

Description

Nov. 10, 1925.

J. A. SCHMITZ E1' AL.

GRAIN Doon Fon FREIGHT cms Filed July 13 1923 n o a o o e Patented Non'. iQ,

Uni-reo :erases miser JOSEPH A. scnrvrr'rz, on estense; Ann anni E. sonos-Leie., oF nwinsroii, i;tLINoIs;

GRAJN DOOR FOR FBELGHT GARS.

Application filed July .13,

.Grain Doors for Freight Gai-55, o-i' which the `iiolkming is .a sneciiicaton.

Oui invention relates to ,a device which wohn-ve invented fior foaming a closure :for the door opening oi'. boi; cars nd is partiouiarly adapted for use in. shipping grain. It is` now` the `practice .to einpiogsy for this 'purpose standard door sections made ac cordiale to Vvarious speciiications .adopted by d: erlernt railroad companies., these doors being supplied to shippers lby the railroads. v'The .sections allie uniformly seven *feet in length .and .twenty inches in width, and are zlireqnentl-y consti-noted of two thicknesses .off

jlzulnber making broke-n joints, the boards .on one side :being shooter than the other to provide Efor n Across-piece oit .the same thick ness as theother boards at each end, these cizossepieoes being .designed to be placed 'fracing the 'ins-1de foi' the ear vwhen the section is "1nuse, as in the typical door illustrated in the draining. As orzdiriarisli7 used, these door sections are simply nailed across the door opening, one above another-,from thizee 4to *five sections being employed, sometimes three sections being used, as illustrated, .and etten fou-r, and less il'requently ve.

.lin `unloading cars thus loaded with grain, it is the common practice to reinotfe .the top door first; then the next loWerl, etc., insucofession, 'as the grain level is 'lowered in the As `.the grain is compacted by the jar- `ring Ato `which' the car is subjected `in `.transponto/tion, particularly the :lower portion of the grain, iit is by no means oasiT matter 1to1rerr1..o-ve fthe doors. s :is done, when a .car has been properly loaded., .by 'forcing -Atilie .ends o''fiilie door finiva-nelly zby heavy y bars aga" st #the ipressune ofi o vunseat@the v [a s then -leifoiper The .secoi lf. om s osuoilily especial y" Sonie fe .i

osare CBSSaJ.

g gli "enioadnglireppers i923; sei-iai No. 651,236.

.any case doors ,are liable .to be subjected .to Very rough tneatrnent in removing them., an are neqpeently so broken or darn-aged as to be no llonger serviceable.

VSince the. .door sections are removed .one by one., the ,loW. oi'V the .grain proceeds by stages., and .as a number of cars, frequently :tive ol' sin, are simultaneously unloaded at one y.long platform, an interruption o'i' the unloading operation, due, it may be to iin- .p'rope'r closure of .one of the cars, results ind-slay toall the others. 'l

'Itisthe'object of' Jour 'invention to aclitate the.unloading cig-rain and prevent damage *to standard grain door sections, such .as those above mentioned, by providing` a destrnctib'le and replaceable bottoni clos! ure member and associated securing and bracing means adapted to be used in connection iaith the standard 4dooil sections mentioned, so that an opening .can be readily made along :thetloor line of the car,` and .the door sections taken down as soon the rpressure is relieved and while-the car is vbeing emptied iVilth this .object in yiew We have devised and invented `the' car door .closure hereinafter more iirlly described,

and our invention resides in theconstruction Lsection on la somewhat larger' scale, 4showing the manner in Which the grain opening `is inade'at :the bottoin of the closure; Figs. t and 5 are `vertical and horizontal sections respectively showing the means for securing .the alpperlend of `the Wrench bar; Fig. 6 a frag'inentary 'horizontal section adjacent the lower end ort the Wrench Lbar; Fig. 7 a :penspec'tive :View .of an alternative securing means; and lT-ilg. a .fragmentaryi-'ieiticai section adjacent fthe lower end `of the Wrench bar, showing the use of a cleatfvtor restrain outward incitement-off the be. i

.ilse sain r "terence .characters indicate the .sameipants in 'hegunesoif :the dnawifng. iienieznber ``,ozfitl'ae car door closure to `immt'ron :more articolari-y re- -s it `de.st-fractibie.-.elo'solm' mein'.-

a ,aw spasm orare d berl, which is preferably formed of a thin and somewhat brittle board of suitable widthV-say between four and twelve inches wide and preferably about eight inches,`

5 thouglrthis may vary somewhat. The ends of this board are nailed lightly to the posts at the sides oi the door'opening, on the inside of the car. Above this are nailed the i as shown, by a bolt 3 engaged by a nut on the inside of the closureand provided with `a wide washer aording va substantial bear ing. Secured to the lower end of the bar is a strip of metal .4 which in applying the "f5 closure is carried inside the car and nailed to the car floor. A U-shaped staple a, rounded "between its prongs, is preferably employed asl the fastening means for se` curing the strip 4 to the bar, to provide for 30 tsready` detachment. The strip `may con-' sist of a piece of box strapping of suitable weight (say-about `18 gauge), though wire may be employed if desired;` Towards the upper end of the post, opposite the joint i/between the uppertwo door sections, a strip of metal 5, which may be formed of the Y same material as the strip it, is secured to the bnr, and `in applying the closure the free ends of this strip are` twisted and carried i0 inside the closure between the doorV sections, and preferably both ends bent upwardlyy and secured to the upper section, as shown VniFigs. l and. 2, or it desired, one end bent downwardly Vand nailed `to the. section B and the other'upwardly and nailed to the sesct1on C, as shown in Figs. l-and 5. It

desired the member 5 may be formed of wire, 'though a fiat piece of bon strapping is more readily applied.

Then the grain is to be unloaded the Strip 5 is eut orbroken and tliestaple Le witlr drawnby a suitable tool, and the bar `2 emy ployed` as a wrench bar to break away the center' portion Lof the closure member. In`

thismanner an opening is provided at the bottom of theV closure through which the grain may iow, and as the grain is removed the upper, `middle and lower sections are taken down in order.

30 It desired, ,the bar n y a may later heY provided with a newl closure member l and new securing

members

4 and 5 for further use.

In case thegloor of the box loar does not have a metalfprotecting plate or strip at rsuch .as indicate by the reference numeral G in Figs. 2 and 3, the strip l may be dispensed with and a cleat 7, nailed to the floor, (see Fig. 8) be employed to resist outward pressure on the lower part of the bar 2.

In Figure 7 we have illustrated an alternative method of securing the upper end of the bar 2, consisting of an angular stift' metal bracket plate 9 fastened to the upper end of said bar and also firmly secured to the upper door section byv nails or screws.

Our invention not only has the advantage of providing a ready means for effecting an opening' for the grain at the level of the floor of the car, but also equalizes and dis tributes the .strain on the door sections, and keeps them` in vertical alignment. The lowermost section, it may be explained, does not sustain as `great internal pressure as the middle one, since the lower stratum of grain rests on the car door, and is not subject to true tluid pressure in a lateral direction.` The upper stratum of grain, oppo-` site the door section C, likewise sustains less pressure thanthe stratum opposite the sec tion B, though, for the reason that the depth of the grain is less. The middle section (or sections, if more than three are employed) therefore sustains the greatest pressure, and i obviously this is in part communicated by the bar` to the upper and lower sections and the anchorage to the car floor. Ordi-v narily there will be a slight amount of slack in the bottom securing `strip 4, so that part of the outward pressure of the grain will besustained by the lower door section. This is of advantage in preventing undue strain onthe middle section and an unequal deformation of the door sections, and 1in use they .will retain their original shape much longer.

Theprovision of the destructible sectionl l moreover increases the height of the closure by an amount equal to its width, and therefore increases the carrying capacity of `the car to that extent.

lVe claim:

l. A car closure comprising horizontal door sections, `a lower destructible closure member, and an exterior bar member, said bar member heinfr secured to an upper door `cured to `said destructible member and anising horizontal ,chored to the car floor, said bar being i equipped near` its upperend opposite a joint between the door sections with a strap passing between said sections and anchored to the nupper section.

car closure comprising horizontal I3@ 10Q? sections, a lower destruotible closure leerbee sure member and flexibly secured to the car floor and removably secured to an upper door section, whereby the upper end oi' said bar may be released and the bar swung outward to pry the destructible member loose.

5. In a closure for gra-in car door openings, a lower member adapted to readily yield outwardly when unsupported intermediate its ends, a lever bar firmly secured to said member and adapted to extend upwardly therefrom, means for yieldingly securing the upper end of the lever against the -closurc member, and means located on the loor of the opening preventing thev direct outward movement oi the lever but permitting it to swing, whereby when the upper n end of the lever is released it may be swung outward and draw with it said lower 1nem" ber of the door closure. i ,Y

6. In a grain door ,of the class described,

a yielding lower member, a bar secured t0 i said member near the vupper edge thereof, means flexibly securing the lower end of the bar to the floor of the opening in the car, and means for 4releasably securing the upper end of the lever against the Closure member.

7. In a grain ear door closure, a lowermostl member adapted to readily yield to an outward strain when unsupported intermediate its ends, a lever bar secured to saidl member adjacent its upper edge, a strap extending under said lower member and attached to the'car ioor within they opening ,and :flexibly connecting the lever to the oark floor, and releasable means for holding the upper end of the lever in position, the construction beingsueh that when the upper fend ot the lever 'is released and drawnv outward said lower member swings outward with the lever. Y

JOSEPI-IyA. SCHMITZ. ADYN E. SCHUYLER.