USRE12623E - Reissued mar - Google Patents

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USRE12623E
USRE12623E US RE12623 E USRE12623 E US RE12623E
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US
United States
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door
shaft
car
crank
doors
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Anton Becker
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By Mesne Assignments
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  • - My invention relates to dumping mechanism or 'cars, and while it is particularly applicable for use in metallic cars and is so, de-
  • T e object of my invention is to provide rat the dumpin -doors can e very ea 'y and which will operate very efficiently and not be liable to easily get of the car whic out of order.
  • Myinvention broadly consists in a crankshaft having a crank-arm adapted to engage the doors, so that by merely 'revolving'the shaft upon its axis in opposite directions the doors will be opened and closed.
  • Figure 1 is a side elevation of the car embodying my invention in its preferred form.
  • Fig. 2 is a sectional end view of the car, taken, on line 2 of Fig. 1, showing ,a cross-bearer, v.the door-operating mechanism and'doors being-removdi, Fig.
  • Fig. 4 is a detail plan view showing the bracing for stiffening the central plate-girder of the car.
  • Fig. 5. is a detail sectional elevation through the plate-girder ma e in two pieces secured together-at'the bolster.
  • 6 is a detail. sectional view on line 6 of Flg. 3, showing the, details of the door-operating mechanism.
  • Fi 7 is a sectional end view, and Fi 8 is a si e view, of thetongue orfinger whic makes the sliding connection between the door-operating mechanism and the door itself.
  • Fig. 9- is a detail perspective viewof a cast' used to form a bearin for the shaft.
  • Y numeral 25 indicates the central plate-girder of the car cut away in the lines 26, 27, and
  • this girder differing from the plate shown in that agplication only in that instead of being ma e of one contmu'o'us piece of metal it is made inltwo or three pieces,
  • one portion 25 extendi from bolster to bolster and a sup lementa portion 25 extending in line wit the main portion 25 from the bolster to the end sill, the two being secured 'to-' gether and to'the bolster by an le-irons 15 and 16 and-rivets 1'7 and 18.
  • this construction Iam ab e if the car should be in a wreck and the portion of the plate-girder I between the bolster and [the end or otherwise damaged to cut the rivets 17 and the connection (not shown in .detail'in this application) between portion 25' and the end S and remove the portion 25' and substitute a new' similar portion.
  • this construction I can make the bolster of one piece fi om side to side.
  • the door is also adapted toswing down'from' the horizontal position shown at 15, the left ⁇ of Fig; 3. to the inclined position shown at the-right of F' .3, inwhich position i the portion, of the 10135 which, rests on the door when it is inthe horizontal positionwill'slide ofl" at the side of the car, thereby 2o unloadingthe ortion of the car-.loadnpon the particular oor.
  • this cran -pin 57 is made of a si le piece of shafting bent in the form shown; ut' manifestly itma be made of a 5 'foi'ging or inother ways wit out departing from my invention;
  • the crank-plus 57 I should be. approximately horizontal and ap-- roximatel of the width between the cross bearers an somewhat longer than the width 86" of the doors-31, so that when the shaft is up, as shown in Fig. 1 and at the left of Fig.
  • crank pin will bear against the stop 54 on the under side of the door and hold it in ,a horizontal position and so that when :the shaft is turned through an angle 'of'approximately one hundred and ei htydegrees to the position shown at the rig t in Fig.3 the I door will rest upon the crankin between i the crank-arms.
  • the shaft .99 rigidly secure two ratchet wheels 58and 61,5 and between them I journal a-rhYQi' 0, hav-' ing on its outside a pivoted universe-1 awl 63, adapted to en age the ratchet-whee 6,1, which is made wit universal teeth, so thatthe lever and pawl may operate upon it, ineither direction.
  • the pawl 62 is placed in such a position thatthe ratchet-wheel 58 clicks under itand 1 10 the pawl acts as a lock, preventing the shaft running away. from the operator in the direction'opposite to the direction from which he is attempting to' turn the shaft.
  • the; i 15 operator has simply to reverse the angularity o thetwo pawls to their ratchet-wheels and -move the lever 60 in the opposite direction from the direction he was previously moving it.
  • This mechanism consists of an antifriction-wheel position
  • a-pivoted door adapted to retaina part of the load, a shaft adjacent to the door a crank-arm on said shaft, a wheel on sai crank-arm .in engagement with said door, means for holding said wheel in contact with the door in all operative ositions, and means for turning said shaft, w ereby, as said-shaft is moved,said door is opened or closed.
  • a pivoted door ada ted to retain a portion 0 the load, a shaft ournaledadjacent to said door, a crank on said shaft, a journaled wheel on said crank-arm adapted to bear against the door, and mechanism on the crank-arm sliding in a slot in the door and V the shaft, whereby moving the shaft in opposite directions givesthe door 'corres onding motion.
  • a car in combination with the frame of the car a pivoted door adapted to retain a portion of the load a shaft 'ournaled on op esite sidesof said door, dou le crank-arms etween the bearings of said shaft having a common crank-pin,'a wheel or wheels on said crankin bearing against said door, means for holding said wheel in, contact with the door in all 0 erative positions, and means for turni sai shaft, whereby, as-said shaft is move ,saiddooris moved.
  • each of the doors adapted, as saidand awheel onsaid crank-arm bearing and form a portion of the an antifriction-whe'el having a ho e in its cen- 'more double crank-armsiand 'a' connecting tion of the shaft be' 'pin, and a splitrsleeve adapted to fit over vsaid crank-pin to form a journal-bearmg for crank-arms onto said crank-pin; a split sleeve adapted to fit over said crankin to form a journaland a finger rotatably mounted u against the under side of the door andmechopposite directions ;the door' is positively moved in opposite irections.
  • the center girders adapted to up form a portion of the floorof the ca'r. and adapted to down between the- 'cross-I supports, a sh pivotally mounted at a, fixed point on the cross supports and a crankshaft is moved, to open and close the doors.
  • a car the combination of the frame of the car consistin of a center plate-girder and cross-bearers or olsters, doors pivoted to the center plate-girder adaipted to swing as oor and adapte to swing down between the crosssu ports to em ty the load from the doors, 'a s aft pivr' ota 1y mounted on thecross-supports, a porbent to orm double crank-arms, each cran arm, bearing against and supporting the door above it andmeans for turmng the said shaft, whereby, as said shaft is turned in opposite directions, said doors are positively moved 1i and down.
  • IAKIIIQIB metallic car a-frame consisting ofa central plate-girder andeross-bearers or bolsters intersecting the same at right angles, adoor pivoted to said central plateirder between one set of cross-bearers or bo sters, adapted whenlevel; to form a portion of the uring said member to cross-bearer floor of the car, and adapted when swung down, to permit the ortion of the load upon the door to slide 0 at the side of the car, means for moving said door from one position to the other and horizontal truss-bracing near the top ofsaid plate-girder but low the cor connected to opposite cross-bearers or bolsters, substantially as described.
  • a pivoted door adapted to retain a portion of the load, a shaft pivotally mounted adjacent to the door and on opposite sides of it, double crank-arms between the bear ings of said shaft having their crank-pin bearing against and supporting said door, in bothopen and closed )ositions, and means for operating the she t to open and close the door.
  • a Ipivoted door adapted to retain a portion of t e load, a shaftjournaled adjacent to the door and on opposite sides thereof, double crank-arms on said shaft and a pin connecting them adapted to support said door in both open and closed positions, a
  • dumping-car a hinged door forming a part of the car-bottom, a supportingarm rams beivotally connected to the carthe door and movable to and from verside of-the door to hold the door closed when in vertical position and'supportin v the door when in open positionand means fin turning the arm to permit the door to open when turned from vertical position.

Description

REISSUBID MAR. 26, 1907.
A. BECKER. DU-MPING MECHANISM FOR METALLIC CARS.
APPLICATION FILED MAY 2, 1906.
3 SHEETS-BEBE! 1.
[NVEN TOR REISSUED MAR. 26, 1907.
A. BECKER. v DUMPING MECHANISM FOR METALLIC CARS.
APPLICATION FILED KAY 2. 1906.
m LVVE N T OR 5; E Attorney WITNESSES nmgsusn MAR. 2 .1907.
- y I A. BECKEB. DUMPING MECHANISM-FOR METALLIO CARS.
APPLIUATIOI FILED IA! 2. 1906.
a shun-mun a.
, JNVEN 70 z ittarna' [VITA 15557 5;
f? Maw form now known to me,- reference being had.
. to the accompanying \1 UNi En STATE S PATENT .o FFioE.
ANTON BECKER, F COLUMBUS,
CORPORATION OF OHIO.
ouih inqmEcH msui FOR METALLIC cans.
Specification of Beicsued Letters Patent.
l, OH10,ASSIGNOR,BY MESNE ASSIGNMENTS, TO THE RALSTON' STEEL CAR? COMPANY, ,OF EAST COLUMBUS, 'OHIO, a
touched 35;, so, 190' iginal Io. 763,841, am: 1m as, 1904.. as... for reissue am my 2, 190a. .Serlal m. 314.900.
To all whom, it may concern: Be it-kn wn that I, ANTON BECKER, a citizen of the nited States, residing at Colum-' bus, 'in the county of-Franklin and State of Ohio, have invented a new and useful Dumping Mechanism for. Metallic Cars, of which the following is a specification in its best drawings, in which similar numerals indicate the same parts throughout the several views.
- My invention relates to dumping mechanism or 'cars, and while it is particularly applicable for use in metallic cars and is so, de-
mechanism for o cheaply constructed and scribed it should be understood that it may also be applied to cars made ofrother'materials.
In the spe described it is an improvement upon the devices-shown and described in my application for metallic flush-floor dump-car, Serial N 0. 190,415, filed by me January 23, 1904, and for convenience that application and the drawingstherein will be referred to at different ointslin the specification.
T e object of my invention is to provide rat the dumpin -doors can e very ea 'y and which will operate very efficiently and not be liable to easily get of the car whic out of order.
Myinvention broadly consists in a crankshaft having a crank-arm adapted to engage the doors, so that by merely 'revolving'the shaft upon its axis in opposite directions the doors will be opened and closed.
. It also consists in anovel stiffening device, which is rendered possible by the use of this preferred dum ing mechanism, by which the car of my app ication Serial No. 190,415 is rendered more rigid. s
v My invention also consists in many, details I of construction, which will be fhereinafter more fully described and claimed as the specification proceeds.
In the drawings, .Figure 1 is a side elevation of the car embodying my invention in its preferred form. 1 Fig. 2 is a sectional end view of the car, taken, on line 2 of Fig. 1, showing ,a cross-bearer, v.the door-operating mechanism and'doors being-removdi, Fig.
cificform of my invention here 3 is the same view showingthe doors, shafts,
and operating crank-arms in position. Fig.
4 is a detail plan view showing the bracing for stiffening the central plate-girder of the car. Fig. 5. is a detail sectional elevation through the plate-girder ma e in two pieces secured together-at'the bolster. 6 is a detail. sectional view on line 6 of Flg. 3, showing the, details of the door-operating mechanism. Fi 7 is a sectional end view, and Fi 8 is a si e view, of thetongue orfinger whic makes the sliding connection between the door-operating mechanism and the door itself. Fig. 9-is a detail perspective viewof a cast' used to form a bearin for the shaft.
.. tor, showing tliefcentral Fig. 10
is a detail end view 0 the ratchet mechanism As in the former application referred to, Y numeral 25 indicates the central plate-girder of the car cut away in the lines 26, 27, and
28, this girder differing from the plate shown in that agplication only in that instead of being ma e of one contmu'o'us piece of metal it is made inltwo or three pieces,
one portion 25 extendi from bolster to bolster and a sup lementa portion 25 extending in line wit the main portion 25 from the bolster to the end sill, the two being secured 'to-' gether and to'the bolster by an le-irons 15 and 16 and-rivets 1'7 and 18. y this construction Iam ab e if the car should be in a wreck and the portion of the plate-girder I between the bolster and [the end or otherwise damaged to cut the rivets 17 and the connection (not shown in .detail'in this application) between portion 25' and the end S and remove the portion 25' and substitute a new' similar portion. By this construction I can make the bolster of one piece fi om side to side.
or pieces of metal running across the car sill be bent in myformer applicatiomith e under frame of the car is made upof the central plate-girder 25, the bolsters 29, and a series of cross-bearers 30, running across the car'at intervals and intersect' this central lategirder at right angles. imilarly, as s own mmy previous application, there are doors 31, pivoted at 32 at or near the'top of'the central lplate-girder, adapted to occupy substantia y'all of the space between the crossto bearers or a cross-bearer and a bolster, and this form a portion of the fioor of the car, the door being held up'against an angular stop34. The door is also adapted toswing down'from' the horizontal position shown at 15, the left} of Fig; 3. to the inclined position shown at the-right of F' .3, inwhich position i the portion, of the 10135 which, rests on the door when it is inthe horizontal positionwill'slide ofl" at the side of the car, thereby 2o unloadingthe ortion of the car-.loadnpon the particular oor.
' In order to stiffen the underframe of .the
. car and make it -more rigid than that shown in my former application, I take a series of angle- irons 36 and 37 and bend them, as
. showninFig. 4, and" secure them together to the .central plate-girder -b rivets or bolts 38 and secure'jheir ends 39 by means of angle-irons $6 to the adjacent crosso bearers or' bolster, thereby pfiolviding 1a 0 great y trusswork (shown in Fig.4) w -'stiffen's the central plate-girder. This trusswork is, as shown, placed near the top of the girdenbutlow; enough so that it will not impede the opening the door, as' shown in ile the invention of this application includes some of the details just referred to, it
consistsprincipall in novel means for open- I 40, ing and closing t e doors 31, .forming the floor of the car. -In order to accomplish this, I out in the opposite sides of each crossbearer notches '45, as shown in Fig. 2.
These'may beliterally cut out of the flanged 4; plate forming the web of the cross-bearer,
orthey may be .pressed into flange .51, as
shown. Theupper portion of these notches should be approximately semicircular, so as to fit around the shaft and allow it to beer therein. I then provide castin as shown m Fig. 9, having semicircular caring-faces '46, supportedon the web 47 on a lower flange 48, these castings .bein adapted to slip into the notch 45 and to e secured inby rivets 50', passing through the e'* 48 of the castings and the flange 51 of t ecross-bearerBO. In order to further f secure these castings in position, I can if bearer 30- by means of bolts or rivets 49, 'passing througlhthe hole 58 and through oles (not shown) inthe crossmeans of notches 45 in the cross-bearer webs, is a shaft 55, having bent in it, adjacent to each of the cross-bearers where ",it'is crank-arms 56,0onnected together by a long crank-pin 57, as shown in Fi .1. In the par ticular form shown this cran -pin 57 is made of a si le piece of shafting bent in the form shown; ut' manifestly itma be made of a 5 'foi'ging or inother ways wit out departing from my invention; The crank-plus 57 I should be. approximately horizontal and ap-- roximatel of the width between the cross bearers an somewhat longer than the width 86" of the doors-31, so that when the shaft is up, as shown in Fig. 1 and at the left of Fig. 3, the crank pin will bear against the stop 54 on the under side of the door and hold it in ,a horizontal position and so that when :the shaft is turned through an angle 'of'approximately one hundred and ei htydegrees to the position shown at the rig t in Fig.3 the I door will rest upon the crankin between i the crank-arms. On the end 0 the shaft .99 rigidly secure two ratchet wheels 58and 61,5 and between them I journal a-rhYQi' 0, hav-' ing on its outside a pivoted universe-1 awl 63, adapted to en age the ratchet-whee 6,1, which is made wit universal teeth, so thatthe lever and pawl may operate upon it, ineither direction. Pivoted to theendsill of the car I mount anotherpawl 62, adapted to bear upon the ratchet-w eel 58, which also has universal teeth, so that it may operate in too either direction, dependin upon-the angle of the pawl to the ratchet-w ee 4- is'the oper-' ation of the shaft the operator takes'hold of' the lever 60. and moves it up'an'd down off from the sto or rest 64, in which itnormally I0 5 re oses, and by placing the pawl63in proper re ationship to the ratchet-wheel 61 moves the shaft-55. in one direction. At the same time the pawl 62 is placed in such a position thatthe ratchet-wheel 58 clicks under itand 1 10 the pawl acts as a lock, preventing the shaft running away. from the operator in the direction'opposite to the direction from which he is attempting to' turn the shaft. To 'b'y hand reverse the operation of therdevice, the; i 15 operator has simply to reverse the angularity o thetwo pawls to their ratchet-wheels and -move the lever 60 in the opposite direction from the direction he was previously moving it. 'When the door is closed in'the position shown at the left-of Fi .3, the operator can b simply thro .bot pawls 62 and 63- out desired, plaoe'thereon an end'fiange 52 ;and bi with be secure this flange 52 to the web of the cross-- e agement their respective ratchet whee take all the control of.- lever'Gfl off from the shaft, inWhiCL -oaSQinthe absence 25 of foreign obstructions, such-as iep'brwe din material, the load uponthe-doofiwili' 'rce the door do'wn androtate: the shaft the pivoted double 1- ia aa the lever 60, as just described, and the doors.
other causes.
"would by gravity always fall; but in practice there is some friction between the crankarm and the doors, and, furthermore, the
doors may become frozen shut or stick for of the shaftpositive under these conditions and with little friction I provide special mechanism, which I shall now describe. This mechanism consists of an antifriction-wheel position,
v plate 83 extending outside of the plate 82,
'68, which should be made with a hole in it large enough so that it will slipl'over the turns 69 between the crankpin 57 and the crank-arm 56 and over the turns 70 between the crank-arm 56 and the shaft proper, 55.
In order to fill upmthis space in the wheel and give it a proper aringwhen in the desired,
make a split collar 72 in two parts,
as shown in Fig. 8, the two parts of the collar beingl'adapt'ed to sli inside of the wheel 68 and ave the wh rotate freely upon the collar in, contact with the head of the collar 74. On the other side of the wheel 68 I journal a finger 78, made in two parts, as shown in Fi .7, and secured together by rivet 80. This r 78 rotates on the split collar 72, and the collar is secured to the s aft by a cotter 73. The end' of firiger 78 is adapted, as shown, to fit inside 0 the slot 81 in the door 31, the slot being formed by securing two plates 82 and 83 below the door, the
this structure'being similar to that shown in my previous application, in which the corre- SPQndmg slot 1s numbered 92. The parts shown in Fi 18113116 W11 are so arranged and proportioned that, as 6, when the finger 78 is in slot 68. bears a ainst the under side of the door, from which 1t will be seen that as shaft rotates, thereby moving the' crankby giving the shaft 55 a half-rotation it will move the floor-doors from the horizontal 1poig; it double crank-arms between the bearings pin 57 in a semicircle about the center of the shaft, the finger 78 will move along'the slot 81 in the doors and the wheel 68 will bear against the under side of the doors, and that "ing that t e'car-doors are. in the position "shown at the left of Fig: 3 the operator takes 5.,hold of the "gar! s 5,3, the os tion shown at the of the samelever 60, an by the use of the in pioperfpoiition rotates the shaft" 55 the ition shown at the left of Fig. 3
*figure, thereby lowering tli' oor to such a fpositionit hat-the load'uponit will slide or.
In order to make the rotation means for turning When this is accomplished, he reverses the sawls and rotates the shaft in the opposite irection until the door again returns to the horizontal osition. If at any time the shaft gets out 0 order and it is necessary to're- -move it, the operator cuts the rivets/49 and 50 al the castings ong successive cross-bearers and removes then removes the shaftand makes what repairs are necessary and replaces "the same or a newshaft and rerivets the parts inposition. I do not-'wish to be understood as limiting mgself to the 'exactdetails of construction, w ich may be varied within reasonable limits without de arting from my invention.
Having t us described my invention, what I claim as new, and desire to secure by Letters'Patent, is. Y
46 48, supporting the. shaft, and- 1. In a car, in combination with the frame of thecar, a-pivoted door adapted to retaina part of the load, a shaft adjacent to the door a crank-arm on said shaft, a wheel on sai crank-arm .in engagement with said door, means for holding said wheel in contact with the door in all operative ositions, and means for turning said shaft, w ereby, as said-shaft is moved,said door is opened or closed.
2. In a car, in combination with the frame of the car a pivoted door ada ted to retain a portion 0 the load, a shaft ournaledadjacent to said door, a crank on said shaft, a journaled wheel on said crank-arm adapted to bear against the door, and mechanism on the crank-arm sliding in a slot in the door and V the shaft, whereby moving the shaft in opposite directions givesthe door 'corres onding motion.
3. n a car, in combination with the frame of the car a pivoted door adapted to retain a portion of the load a shaft 'ournaled on op esite sidesof said door, dou le crank-arms etween the bearings of said shaft having a common crank-pin,'a wheel or wheels on said crankin bearing against said door, means for holding said wheel in, contact with the door in all 0 erative positions, and means for turni sai shaft, whereby, as-said shaft is move ,saiddooris moved. i
' 4. In a car'jin combination with the frame of thecara pivoted door adapted to retain a portion of the load, a shaft pivot'ally mounted adjacent to the door and on opposite sides'of 0 said shaft havingth'eir crank-pin bearing against and supporting said door and mechanism on said pm in engagement with a-slot in saiddoor, whereby as 'sald shaft is revolved raq in o posite directions, it moves the door'positive y in opposite directions; 5
portion of the load, a shaft 'jou'rna led adja- In a car, in combination with the frame of the car, a pivoted door adapted to-retain a cent to the door and on opposite sides thereof, I I
double crank-ar'ms on said shaft and a pin i connect them.. ada to support said door, a w eel upon t e crank-arm arm on said shaft bearing against the under;
side of each of the doors, adapted, as saidand awheel onsaid crank-arm bearing and form a portion of the an antifriction-whe'el having a ho e in its cen- 'more double crank-armsiand 'a' connecting tion of the shaft be' 'pin, and a splitrsleeve adapted to fit over vsaid crank-pin to form a journal-bearmg for crank-arms onto said crank-pin; a split sleeve adapted to fit over said crankin to form a journaland a finger rotatably mounted u against the under side of the door andmechopposite directions ;the door' is positively moved in opposite irections.
6. In a car, the combination of the frame of, the car consis and cross-bearers or ters, doors pivoted to. the center girders adapted to up form a portion of the floorof the ca'r. and adapted to down between the- 'cross-I supports, a sh pivotally mounted at a, fixed point on the cross supports and a crankshaft is moved, to open and close the doors.
7; In seat the combination of a frame of" a,car, consistingof a center girder and cross meta? bolsiers, doors pivoteg tfo the center er a te toswingu an orma ortion of thoi floor of the ca and adapted to swing down between the 'cross supports, a shaft pivotally mounted at a fixed pointed the cross-supports a crank-arm on said shaft g t the under side of the doors.
- 8. In a car, the combination of the frame of the car consistin of a center plate-girder and cross-bearers or olsters, doors pivoted to the center plate-girder adaipted to swing as oor and adapte to swing down between the crosssu ports to em ty the load from the doors, 'a s aft pivr' ota 1y mounted on thecross-supports, a porbent to orm double crank-arms, each cran arm, bearing against and supporting the door above it andmeans for turmng the said shaft, whereby, as said shaft is turned in opposite directions, said doors are positively moved 1i and down.
9" In a metallic car,'a sh having one or more crank-arms with'connect' -pi-ns in it,
ter large enough to allow it to slip along said shaft over said crank-arms-onto said'c said antifriction-wheel.
'10; Ina metallic car, a shaft having one or crank-I-pin bent'in it, an a'ntifriction whee having 'a fholein its center large enough to' allow it to slip along said shaft over said bearing for said am 'ction-wheel el Ml pted a 1 r on save a 'to'engage so me oor. 11. In a car, a cross-beareror bolster having a notch inits lower edge, a casting form- 4 ing the Ii. portion ofthe bearing'fora amsm mounted on the crank-pin moving in a? slot in the door and mechanism for 'I'noving said shaft, whereby asthe shaft is movedin I closing pforsec of a centerfplafte-girder v pinfthe form'of a; p v p a notch cut inthe lower edge of said I neatlf i to" fit; at; said was and means securing said casting to said cross- 12." Inacar a'cross-heafer or bolster hav- 7 ga ia notch in' its lower edge, a memberptedto asi-alower bearing for a shaft thehottom of saidnotch, and-means 13, lancer, a crossrbearer' orbolster made late-'girderwith a lower r adapted'to rm as p bearing 's'hafnz-facasting adapted. to form the lower a healing for a shaft adapted to fit in said notch and means for securing saidcasting to the ofgsaid' cross-bearer orbolster.
, IAKIIIQIB metallic car a-frame consisting ofa central plate-girder andeross-bearers or bolsters intersecting the same at right angles, adoor pivoted to said central plateirder between one set of cross-bearers or bo sters, adapted whenlevel; to form a portion of the uring said member to cross-bearer floor of the car, and adapted when swung down, to permit the ortion of the load upon the door to slide 0 at the side of the car, means for moving said door from one position to the other and horizontal truss-bracing near the top ofsaid plate-girder but low the cor connected to opposite cross-bearers or bolsters, substantially as described. I
enoulgh to permit said opening-and closing of 15. In a car, in combination with the frame of the m, a pivoted door adapted to retain a portion of the load, a shaft pivotally mounted adjacent to the door and on opposite sides of it, double crank-arms between the bear ings of said shaft having their crank-pin bearing against and supporting said door, in bothopen and closed )ositions, and means for operating the she t to open and close the door. a
16. In a car, in combination with the frame of the car, a Ipivoted door adapted to retain a portion of t e load, a shaftjournaled adjacent to the door and on opposite sides thereof, double crank-arms on said shaft and a pin connecting them adapted to support said door in both open and closed positions, a
wheel upon the crank-arm 7 bearing against the under side of the door and mechanism for mov' said shaft to open and close the door '17. na dumping-car, a hinged door forming a part of the car-bottom, a supportingarm rams beivotally connected to the carthe door and movable to and from verside of-the door to hold the door closed when in vertical position and'supportin v the door when in open positionand means fin turning the arm to permit the door to open when turned from vertical position.
1S. In adumping-car, a hinged door forming a part of thecar-bottoln. a supporting.
arm Eivotally connected to the car-frame be- I In testimony whereof I have signed this neat the door and movable to and fromve'r: specification in the presence of two subseribtical position inengagement with the under ing witnesses. side of'the door to hold the door closed when ANTON BECKER.
5 in verticalposition and permit the .door to Witnesses i open and support it in open position when FOREST R. GREEN, turned from vertical position. W. D. 'McKmNnr.

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