US948038A - Car-dump. - Google Patents

Car-dump. Download PDF

Info

Publication number
US948038A
US948038A US50102309A US1909501023A US948038A US 948038 A US948038 A US 948038A US 50102309 A US50102309 A US 50102309A US 1909501023 A US1909501023 A US 1909501023A US 948038 A US948038 A US 948038A
Authority
US
United States
Prior art keywords
car
frame
piston
dumping
apron
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US50102309A
Inventor
George O Bradley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US50102309A priority Critical patent/US948038A/en
Application granted granted Critical
Publication of US948038A publication Critical patent/US948038A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G67/00Loading or unloading vehicles

Definitions

  • Figure 1 is a side elevation of the main dumping frame or tipple with cars in position thereon ready for dumping, also showing a portion of the main track leading to the dumping frame;
  • Fig. '2 is-a combined end elevation and vertical cross-section on the line 22 of Fig. 1, the operating cy'hnder being in section;
  • FIG. 3 is a combined end elevation and vertical cross-section onthe line 3-3 of Fig. 1, with V cars rocked to dumping position;
  • Fig. 4 is acombined j end elevation and vertlcal cross section (with parts broken) on the line 4-4 of Fig. 5 showing the apron attachment by which the ore or other contents of the car may be discharged to a convenient distance from the side of the car;
  • Fig. 5 is a side elevation of Fig. 4 with part of the apron brokenaway.
  • the object of my invention is. to provide suitable -mechanism' for the dumping -of cars (and notably cars handling ore, rock,
  • Afurther object is to permit the dumping ofpne or; more cars without the necessity of uncoupling ;;the same from adjacent cars.
  • frame may be constructed in any mec any ical manner with a View of securing strength .and rigidity,- but preferably as shown in thedrawings, that isto say, it is composed of;
  • ang e-bra'ckets L one leg of each of whichis riveted to the web of one of the I-beams E, the other leg being riveted to the bottom flange of. the opposite beam F, asshown.
  • Loosely ivoted between the vertical-members of tiie bracketsL is a lockmg-pawl K in the shape. of anangle-piece, the locking.
  • a reciprocating latching plunger-rod Q mounted in a bearing 7, the outer end of the plunger terminating in a head P which the nose R of the dog engages.
  • collars 8 which serve to confine the end. of an arm P mounted at the center of the shaft MP ,To the opposite projecting ends.
  • -the dumping appara-tus may be described as follows Assuming the dumping frame to be in its normal horizontal position, with the rails P thereof in continuation of the track-rails 1 (Figs. 1 2) and with two cars resting on the dumping frame as shown; assuming too' that the piston 4 of the operatin cylinder K is at the end Of its inner stro re; thereupon the operator turns the control valve, sufiiciently t0. admit the motor fluid behind the piston to drive it forward or outward. With the travel of the piston represented b the distance a -b (Fig.
  • the tipple or dumping frame while herein accommodating two cars, may be built for one, two or more cars, asobviousf 'Itwill be seen that the curve of the rocker E of the dump has a true radius from the center of the 'draw-hcads or couplings between the cars, so that both car and dumping frame rotate about the axis of the draw-heads.
  • This arrangement permits the dumping of a car on the tipple without the necessity of uncoupling'the same from thecar on the main track,the ordinary-link and pin coup ler between the cars allowing for the neces sary tilting of a car to discharge its con-- tents. Any kind of coupler however, may be improvised. whose draw-head will allow for the rotation necessarily imparted to a car to dump the same.
  • the apron feature more conspicuously.
  • a tipple or dump--- ing frame in the path of said tramway, said tramway and t-ipple being adapted to support a series of coupled cars, and means for oscillating the tipple about the axis of the drawheads of the couplers whereby the uncoupling of the cars is dispensed with d nim; the dumping of the cars on the tipple.
  • a plunger rod reciprocatingly mounted on the car, a rock-shaft on the car, an arm secured to the rock-shaft, collarson the rod between which the free end of the arm operates, arm and link connections between the rock-shaft and latches, and means on the frame for forcing the plunger rod from its normal position and disengaging the'latches and simultaneously clutching the car to the frame preparatory to oscillating the frame and its axis, a gate forreleasing the contents to be dlschargled, a movable apron normally removed om .the carfor an upright position of thelattei', and means for moving the apron into position to catch the contents released by the gate as the car is about to be rotated to dumping position.
  • spring-controlled latching means responsive to the clamping means for shifting the apron to proper position to catch the contents of the car as the latter are being dumped.
  • a tipple or dumping frame having rockers, means for supporting thereon a series of cars, in coupled relation with the cars on the tramway, the frame bein rotatable aboutthe axis of the drawhead s coupling the severaLcars, an operating cylinder, areciprocating piston therefor, a bell-crank plvoted to the .frame and coupled to the piston, apivoted locking pawl for engaging the bell-crank, a stationary stop' for 'the pawl, a tumbling shaft on the frame, a tippl'e arm on the shaft, a pair'of rotatable dogshafts disposed on opposite sides of the frame, arms on the shafts, link connections between the arms and tipple arm, oscillating dogs on the dog-shafts, stirrupson the car adapted to be gripped by the dogs upon a predetermined travel of the piston, In one irection, said piston rocking the frame and its car to dumping position upon further travel of

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Refuse-Collection Vehicles (AREA)

Description

G. 0. BRADLEY.
OAR DUMP. APPLIOATION FILED \TUHBB, 1909- Patented Feb. 1, 1910.
4; Hanan- 8mm 1.
\ INVEN T 01?.
George O-Bmaleg- ATTORNEY.
G. 0. BRADLEY.
OAR DUMP.
APPLICATION FILED JUNE 9, 1909.
Qa WM 1 mm mri lilw mm in m m 5 w M Wm v0 0% L 64. M m w M mm W W m w E a G ill! vllllltllllrlllil Ill G. O. BRADLEY.
GAR DUMP. AIPLIOAI'ION FILED JUNE 9, 1909.
Patented Feb. 1,1910.
4 SHEETS-SHEET 3.
I'VJTNESSES: INVENTOR.
[h g I BY eorge O-Bamleg- G.0.BBADLEY.
OAR DUMP.
APPLICATION FILED mm: 9, 1009.
Patented; Feb. 1,1910.
' 4 sums-sun's 4.
v INVENT-OR. George O'B7Zey- WITNESSES.-
ATTORNEY.
To. all whom it my concern:
UNITED STATES P NT OFFICE.
can-DUMP.
Be it'known that I, -G 'EORGE O. BRADLEY,
. citizen of the United States, "residing at Salt Lake City, in the county'of Salt Lake and State of Utah, have invented certain new and useful Improvements in Car- Dumps, of which the following is a full,
clear, and exact description, reference being I had to the accompanying drawings, forming a art hereof.
y invention has relation to improvements in car-dumps; and it consists *1n the novel construction and arrangement of parts more fully set forth in the specification and pointed out in the claims.
In the-drawings, Figure 1 is a side elevation of the main dumping frame or tipple with cars in position thereon ready for dumping, also showing a portion of the main track leading to the dumping frame; Fig. '2 is-a combined end elevation and vertical cross-section on the line 22 of Fig. 1, the operating cy'hnder being in section; Fig.
3 is a combined end elevation and vertical cross-section onthe line 3-3 of Fig. 1, with V cars rocked to dumping position; Fig. 4 is acombined j end elevation and vertlcal cross section (with parts broken) on the line 4-4 of Fig. 5 showing the apron attachment by which the ore or other contents of the car may be discharged to a convenient distance from the side of the car;.a-nd Fig. 5 is a side elevation of Fig. 4 with part of the apron brokenaway. i 1
of tro The object of my invention is. to provide suitable -mechanism' for the dumping -of cars (and notably cars handling ore, rock,
coal and. the like which will dispense with the necessity ofany overhead construction thereblyi permitting where desirable, the'use without interference.
- Afurther object is to permit the dumping ofpne or; more cars without the necessity of uncoupling ;;the same from adjacent cars.
A furtherobjectis' to utilize compressed air, steam,.;wateror any-equivalent fluid as the driving means. for, actuating the dumping mechanism-the latter being coupled to the piston 0f a single cylinderv utilizing such driving fluid; thereby not only simplifying the general construction of-the a paratus, but-insuring therefor, a perfect an reliable automatic action under perfect, control of the o eratol'is A urther object: is to providemeans for;
Specification of Letters Patent. Application' filed June 9, 1909. Serial No. 501,023.
ey wires or other means of traction -swung u to it.
Patented Feb. 1,.1910..
controlling the distance to which the :material may be dumped or discharged .:from the side of the car, and in finetoprovide the. dump with other features, the advantages of:- which will be readily apparent from andstailed description of the inventiontzwhich i's as follows:-.-
. Referring to the drawings,'and forzthe presenttoFigsf 1 to 3 inclusive, 1 represents.
the rails of the track or tramway overwhich the-cars 2 arehauled, said rails leadin up to the rails P of the oscillating orv roc ng dumping frame or. tipple. Said dum mg.
frame may be constructed in any mec any ical manner with a View of securing strength .and rigidity,- but preferably as shown in thedrawings, that isto say, it is composed of;
curved members or rockers E connected lon-.
-gitudinally by I-beams F, to which the rails P are secured, the ends of the I-beams being.
secured or riveted to the transverse plates or sheets 3 to which the angle-beams com osing the rockers E are fastened. The e ges. .of the plates 3 are surmountedby struc-- tural members. or. angle bars 0? as shown,"
is connected through theconnecting rod K,
to the end of one arm of a bell-crank lever K ivoted at the bottom of and between the;
. ang e-bra'ckets L one leg of each of whichis riveted to the web of one of the I-beams E, the other leg being riveted to the bottom flange of. the opposite beam F, asshown. Loosely ivoted between the vertical-members of tiie bracketsLis a lockmg-pawl K in the shape. of anangle-piece, the locking.
end being the heavier and when released Iceing free. to en age the end of the adjacent arm ofthe bel -crank K when the latter .1s The locking arm of the pawl isowe'ver, normallylheld inwa hor zontal position by .thestop 1L .wheutho dumpin frame, is in normal position.-and
before. the..-sa.me is tilted (Fig. 2. but the;
shaft or tumbling shaft M to which is se- I to the tumbling-shaft in s M, M, is an arm -L'- to whlch 1s pivot-.
spring Q which normally tends to cured the tipple-arm N (extending in two directions from the shaft) The opposite ends of said tipple-arm are P1V0tall coupled to the inner ends of. the links w ose' outerends are pivoted to the adjacent ends of the arms N? keyed to the dog-shafts O which are mounted in bearings '0 cm thedumpingframe. The links N passthrough the I-bea'ms F with am Is clearance. Keyed between the bear- -al y connected one end of a link L the op posite end thereof being pivotally connected to the'adjacent arm' of the bell-crank K Each dog is adapted to engage a stirrup 0 depending from the center 0 the side of the car'as shown.
Mounted at. the bottom of the car behind one of the stirrups O and in the path of travel of-the nose R of one of the dogs 0, is a reciprocating latching plunger-rod Q mounted in a bearing 7, the outer end of the plunger terminating in a head P which the nose R of the dog engages. On the rod Q are collars 8 which serve to confine the end. of an arm P mounted at the center of the shaft MP ,To the opposite projecting ends.
of the shaft P are secured arms Q which are pivotally connected through the medium of links P to the latches P the free ends of which for a closed position of the hinged door Bengage the angle-bar 9 carried by! Said door. Interposed between the bearing 7 and adjacent collar 8 and encircling the latching plunger rod Q is. an ex andingt drce the rod Q outwardly and thus, through the connections P?,Q and P to elevate the free ends of the latches P into engagement wlth the gate 'or door D.
Leading from opposite ends of the operatin cyhnder K are dpipes K? alternately servmg as supply an exhaust plpes, the upper ends thereof terminating 1n the valvecasmg Kin which the control-valve is actuatedby the lever. 10, the supply of the motor fl'uid (steam, compresse air, water, or equivalent fluid) being furnishedby a pipe 11 leadin from any suitable source y turnin the control valve to one position motor flui will be admitted to one side of the piston4, and by turning to another position, said fluid: willenteron the opposite side of the piston, driving it first mechanism being herein shown only conventionally', as any means for reciprocating the piston mlght be utilized in the present connection.
Referring now to the parts thus far described, the operation of -the dumping appara-tus may be described as follows Assuming the dumping frame to be in its normal horizontal position, with the rails P thereof in continuation of the track-rails 1 (Figs. 1 2) and with two cars resting on the dumping frame as shown; assuming too' that the piston 4 of the operatin cylinder K is at the end Of its inner stro re; thereupon the operator turns the control valve, sufiiciently t0. admit the motor fluid behind the piston to drive it forward or outward. With the travel of the piston represented b the distance a -b (Fig. 2 the bell-crank will be rocked to bring t e end of its inner arm in position to beengaged b the lockingarm of the pawl K, a positive locking taking place the moment the tipple or rocking frame hasbeen oscillated sufficiently to disengage the vertical arm of the pawl from the stop L". A further draft on the connecting rod K by the continued travel of the piston in the same direction'will effect the disengagement as is obvious. In the travel of the piston through the distance aA-b, by reason of the intermediate connections L, L between the bell-brank K and tumbling shaft M, the latterwill be rocked, thus oscillatingthe tipple-arm N in adi rection (contrary to the hands of a clock,
Fig. 2) to push on the links N" and thus, through the arm connections N rock th of the dogs" is forced against the terminal head P of the reciprocating rod Q,'thereby forcing the latter inwardly against the resiliency of the springQ, the inward movement of the rod oscillatin the arm P. which in turn rocks the shaft P in roper direction to depress the arms Q an links P thereby withdrawing the latches P from enga ement with the hinged door D. The latter is-thus free to swing 0 en as-the car tilts. With the travel of tie piston through the space represented by bc 2) the dump is thrown into the position shown in Fig. 3, the gate or door D swingmg open and the contents of thecar or cars dischar 'ng. When the ore has all been dumpe fromthe car, the operator reverses the controlling lever forcing the piston moss frame is brought back to normal position,
the vertical leg of the locking pawl K l-strik- 1 ing the stop L and releasing the crank-lever K"; and when the piston has passed through its final travel b-a, the dogs are "again disengaged from their sti'rrups and oscillated to their original position shown in Fig.
' 2, the spring Q. forcing-"the rod Q outwardly which causes the latches P to retingage the edge of the gravitating gate or door D.
' The tipple or dumping frame while herein accommodating two cars, may be built for one, two or more cars, asobviousf 'Itwill be seen that the curve of the rocker E of the dump has a true radius from the center of the 'draw-hcads or couplings between the cars, so that both car and dumping frame rotate about the axis of the draw-heads. This arrangement permits the dumping of a car on the tipple without the necessity of uncoupling'the same from thecar on the main track,the ordinary-link and pin coup ler between the cars allowing for the neces sary tilting of a car to discharge its con-- tents. Any kind of coupler however, may be improvised. whose draw-head will allow for the rotation necessarily imparted to a car to dump the same.
"Where it becomes desirable to discharge the material some distance away from the car, as where for example the ore is charged into a furnace. the attachment shown in Figs. a and 5 is resorted to, and may be .In Figs. 4 and 5 parts already fully illus-f trated in Figs. 1, 2 and 3have been omitted for the sake of clearness, so as to bring out no described as follows :-'lhe dog-shaft O has secured thereon at points opposite the ends of the car, arms S from which extend the links S, the latter being in turn pivotally connected to the opposite ends of an apron S Disposed along the bottom of the apron to one side (toward the car) of the longitudinal center thereof are lugs or ears 12 which loosely engage a rod 13 mounted between the upper extensions of the rockers E,
E. Theends of the apron are turned up to confine the material on the main body of the apron. .,,;When the dogs are'forced into en-- gagemei rt with the car s'itirrups O preparatory to dumping, the-"rocking of the dogshaft to effect said engagement forces the parts S, S upwardly, thus causing the apron to assume the dotted position shown in Fig.- before the car is tiltedf When tilted, the gate D swings open and the ore runs over the apron as obvious from the drawings. The apron attachment is omitted from Figs. 1, 2, 3 as it would obscure the other parts. Besides, not being necessary in all cases, but
only in special connections such as charging furnaces and the like, its illustration in separate views simplifies the description.
the apron feature more conspicuously.
Such featuresjof construction as may be shown in. the drawings, but to wh ch no reference is herein made, are well known in the art and require no detailed description.
'Having described my lnvention what- I claim is:, y
1. In combination with a suitable, stationary track or tramway, a tipple or dump-- ing frame in the path of said tramway, said tramway and t-ipple being adapted to support a series of coupled cars, and means for oscillating the tipple about the axis of the drawheads of the couplers whereby the uncoupling of the cars is dispensed with d nim; the dumping of the cars on the tipple.
2. In combination .with an oscillating frame having means for the support of a car, an operating cylinder provided with a reciprocating piston, gripping devices on the framefor'cluthing the car to the frame, intermediate connections betweensaid piston and gripping devices for forcing the latter into'engagementwith the car for a predetermined travel of the piston, and oscillating the frame and car to dumping position with a further travel of-the piston in the same direction, said connections restoring the car to normal position with the travel of the piston. in reverse direction and then disengaging the gripping devices.
3., In combination with an oscillatiiig frame having means for the support of a car, a gate on the car, a latch for the gate, an operating cylinder provided witha reciprocating piston, gripping devices on the frame for clutching the car to the frame, latch-controlling devices interposed between the gate-latch and the gripping devices aforesaid, intermediate connections between the piston and gripping devices for forcing the latter into engagement with the carand disengaging the latch with a predetermined travel of the piston, and oscillating the frame and car to dumping position with a further travelof the piston in the same direction.
4:. In combination with an oscillating framehaving means for the support of a car, an operating cylinder provided with a reciprocating piston, gripping devices on the frame for clutching the car to the frame, an apron carried by the frame and normally positioned out of operative connection with the car, intermediate connections between the gripping devices and apron for positioning the apron relatively to the car to catch the contents thereof during dumping, inter- -mediate connections between the piston and gripping devices for throwing the latter Into engagement with the carand shifting the apron to discharging position with a predeterminedtravel of the piston, and oscillating the frame and car to dumping position with a further travel of the piston in the same direction. i
'5.- In combination with a tipple or dumpcar to dumping position. v
\ 7. In combination witha car discharging from the side and rotatable about a fixed fr ing' frame having rockers, means for sup-- porting-thereon a car coupled to a car located adjacent to the frame, the latter belng' a reciprocating pistontherefor, a bell-crank pivoted to the frame and connected with the piston,a locking pawl for engaging the bellcrank, a tumbling shaft on the frame, a tippie-arm on the shaft, a pair of dog-shafts rotatable in theirbearings on the frame, arms on the dog-shafts, intermediate link connections between the arms and tipple-arm, dogs on the shafts stirrups on the car adapted to be engaged by the dogs upon a predetermined travel of the piston in one direction,
. said piston rocking-the frame and car thereon to dum ing position upon the travel of the piston or the balance of its stroke in the same direction. u 6. In combination with a frame oscillating about a fixed axis, and supporting a car, a-
gate-hinged to one side o the car, hinged atches normally engaging the free edge of the gate, a plunger rod reciprocatingly mounted on the car, a rock-shaft on the car, an arm secured to the rock-shaft, collarson the rod between which the free end of the arm operates, arm and link connections between the rock-shaft and latches, and means on the frame for forcing the plunger rod from its normal position and disengaging the'latches and simultaneously clutching the car to the frame preparatory to oscillating the frame and its axis, a gate forreleasing the contents to be dlschargled, a movable apron normally removed om .the carfor an upright position of thelattei', and means for moving the apron into position to catch the contents released by the gate as the car is about to be rotated to dumping position.
8. In combination with a frame rotatable abouta-fixed axis, and adapted to support a car, means forclamping the car to the frame preparatory to the oscillation of the latter to. tilt the car to dumping position, a movable apron normally removed from thecar foran upright position ofthe latter, .and
spring-controlled latching means responsive to the clamping means for shifting the apron to proper position to catch the contents of the car as the latter are being dumped.
- 9. In combination with a stationary tramway, a tipple or dumping frame having rockers, means for supporting thereon a series of cars, in coupled relation with the cars on the tramway, the frame bein rotatable aboutthe axis of the drawhead s coupling the severaLcars, an operating cylinder, areciprocating piston therefor, a bell-crank plvoted to the .frame and coupled to the piston, apivoted locking pawl for engaging the bell-crank, a stationary stop' for 'the pawl, a tumbling shaft on the frame, a tippl'e arm on the shaft, a pair'of rotatable dogshafts disposed on opposite sides of the frame, arms on the shafts, link connections between the arms and tipple arm, oscillating dogs on the dog-shafts, stirrupson the car adapted to be gripped by the dogs upon a predetermined travel of the piston, In one irection, said piston rocking the frame and its car to dumping position upon further travel of the piston in the same direction, a gatenormally closing theside through which the car discharges, and meansresponsive to ,the piston and dogs for releasing the gate for the dum ing operation.
10. In com ination with a rotatable dumping frame provided with means for supporting a car, means on the frame for engaging the car and holding the same fast to the frame for the dumping position of the car, and motor-fluid operated devices-for actuating said car-holding means and rotating the ame. 11. In combination with a car rotatable about an axis-and having a gate for the release of the 'material', a swinging apron normally out of contact withthe car, and means for moving the apron against the car'to direct the material discharged therefrom to a suitable point removed from the car.
In testimony whereof I afiix my signature,
US50102309A 1909-06-09 1909-06-09 Car-dump. Expired - Lifetime US948038A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US50102309A US948038A (en) 1909-06-09 1909-06-09 Car-dump.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US50102309A US948038A (en) 1909-06-09 1909-06-09 Car-dump.

Publications (1)

Publication Number Publication Date
US948038A true US948038A (en) 1910-02-01

Family

ID=3016454

Family Applications (1)

Application Number Title Priority Date Filing Date
US50102309A Expired - Lifetime US948038A (en) 1909-06-09 1909-06-09 Car-dump.

Country Status (1)

Country Link
US (1) US948038A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2622746A (en) * 1949-02-17 1952-12-23 Campling Aubrey George Hoist for motor vehicles
US2829789A (en) * 1955-01-31 1958-04-08 Gerhardt Fred Load handling apparatus
US20040105739A1 (en) * 2002-11-25 2004-06-03 Mccrory Kevin Richard Trailer-tilting, load-discharge apparatus and method
US20050111941A1 (en) * 2003-11-24 2005-05-26 Mccrory Kevin R. Trailer-tilting, load-discharge lock apparatus and method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2622746A (en) * 1949-02-17 1952-12-23 Campling Aubrey George Hoist for motor vehicles
US2829789A (en) * 1955-01-31 1958-04-08 Gerhardt Fred Load handling apparatus
US20040105739A1 (en) * 2002-11-25 2004-06-03 Mccrory Kevin Richard Trailer-tilting, load-discharge apparatus and method
US7114909B2 (en) * 2002-11-25 2006-10-03 Ty-Crop Manufacturing, Ltd. Trailer-tilting, load-discharge apparatus and method
US20050111941A1 (en) * 2003-11-24 2005-05-26 Mccrory Kevin R. Trailer-tilting, load-discharge lock apparatus and method
US7309205B2 (en) * 2003-11-24 2007-12-18 Ty-Crop Manufacturing Ltd. Vehicle loading and unloading method

Similar Documents

Publication Publication Date Title
US3786764A (en) Rapid discharge hopper car
US948038A (en) Car-dump.
US3540382A (en) Motor actuated hopper car doors
US985398A (en) Transfer mechanism.
US1316129A (en) Plant
US568775A (en) Coal dumping cab
US1016570A (en) Dump-car.
US223922A (en) Dumping-car
US2134582A (en) Loading machine
US1488465A (en) Car dump
US812783A (en) Car-door-operating mechanism.
US1022521A (en) Dumping-car.
US1161240A (en) Door-operating mechanism for railway-cars.
US1550891A (en) Coaling station
US1305118A (en) Ditmp-cab
US1095241A (en) Door-operating mechanism for dumping-cars.
US1790402A (en) Mistot c
US580974A (en) Unloading attachment for railway flat-cars
US900368A (en) Dumping-car.
US199761A (en) Improvement in dumping-cars
US1012260A (en) Car-door-operating gear.
US529549A (en) Device
US977405A (en) Railway-car.
US1338010A (en) Dump-car
US1298039A (en) Dump-car.