US1249305A - Automatic transfer for dump-cars. - Google Patents

Automatic transfer for dump-cars. Download PDF

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US1249305A
US1249305A US13738016A US13738016A US1249305A US 1249305 A US1249305 A US 1249305A US 13738016 A US13738016 A US 13738016A US 13738016 A US13738016 A US 13738016A US 1249305 A US1249305 A US 1249305A
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dump
truck
dump car
car
transfer truck
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US13738016A
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William J Black
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61JSHIFTING OR SHUNTING OF RAIL VEHICLES
    • B61J1/00Turntables; Traversers; Transporting rail vehicles on other rail vehicles or dollies
    • B61J1/12Rollers or devices for shifting or transporting rail vehicles on rails

Definitions

  • an object of this invention provide a dump construction wherein the dump car is moved on to a transfer truck and automatically locked therewith and acts automatically to release the transfer truck for movement whereby the car is conveyed upon the truck to dumping position and thereafter returned upon the gaglgthe car a then actlng automatically to permit locking of the truck in position and release of the car from the truck, whereby the car may proceed onwardly 01f of the truck to receive another charge of material.v
  • Fig.- 6 is asection online 6-6 of Fig. 3;
  • Fig. 7 is a detail section taken on line 7-? 8 is, a sectional detail ftaken on line 82- 8 of Fig.
  • Fig. 10 is a bottom plan view thereof.
  • Fig; 11 is afs'ectiona-l detail-taken'on line 11 -11 of Fig. 3.
  • Fig-1 12 is detail section on line 12-12
  • Fig-leis a section on line14:14 of As' s'hown-inthe drawingsz' I an upwardly-inclined track, over which a dump car, denotedas a' whole by the reference numeral 2-, is adapted to be drawn by a cable'3-,'attached to the forward end of the dump car, and leading upwardly into a shed structure 4, built upon a framework 5,
  • the upwardly inclined track 1 terminates at its upper end atfa horizontal platform; which "is built at the upperend of a receiving means intowhic'h the material from the dump car "is discharged.
  • track railsS Built upon the horizontal platform portion-at the upper lend'of'the' receiving pit structure-6, are track railsS, the
  • gage of' which, asclearly shown in F ig. 1, is
  • a truck denoted by the reference numeral 10 is mounted upon the track rails 8, and is provided with supplementary track rails 11,
  • the truck 10 consists of channel side sills 13, and built up end sills, each of which consists of two ohannels 14:, faced toward oneanother as shown in Figs. 5 and G, and with the end' sills secured to the side sills by angle corner bracket plates 15.
  • Plates 16, are secured upon the'top surface of the respective end sill channels 14, as shown clearly in F igs. 3 and 7, and secured on said plates 16, and extending longitiulinally of the truck in parallel relation, are the track rails 1-1, of the same gage and adapted to register with the track rails 1.
  • a pair of diagonally disposed truss rods 18, are connected between the respective bracket plates 16, as shown clearly in Fig. 3.
  • axles 19 Journaled within the end sill channel members 11, as clearly shown in Figs. 3 and 5, are axles 19, and, on the outer ends thereof, are rollers or wheels 20, adapted to roll upon the track rails 89..
  • abutment members 23, curved on their inner surface are mounted upon the'ends of the track rails 11, to receive the front wheels, 2st, of the dump car,'seated therein when the dump car 18 drawn upon the truck in the manner shown in F 2.
  • the entire truck 10 is held secured'in latchedposition by a latchlever 25, which, as shown in 'Fig. 4, engages over the upper end of the transverse I-beam 12 Said latch lever 25, is pivoted upon the rear end sill of the truck and is provided with a tail.
  • lever extension 26 to which is connected a long actuating link or rod 27.
  • actuating link or rod 27 is pivotally connected to the lower end of a normally upright lever 28, which, is adapted to be struck by the front axle of the dump car, as shownin Fig. 5, and tilted forwardly, thereby pulling the latch lever 25, upwardly through the intermediate link 27, to release the truck for movement.
  • Upwardly extending and rearwardly bent bars 29, are secured to the front end sill ofthe truck, and are positioned to receive the. front axle of the dump car engaged therebenea-th,
  • This mechanism comprises a latch lever or hook member 30, shown in Figs. 4: and 5,
  • a link 37 as shown in'Figs. 4t and 11, is connected" between the latch lever 30, and the downwardly directed crank 33.”
  • the plate 35 is adapted tdabutagainst the upper end of” the transverse I-beam12, when the truck movesv rearwardly after a dumping operation tothereby cause actuation of the crank 33, as shown in Fig. 6, to swing the latohlever 30, dow'nwardly and release the front axle of thedump car for movement of thefidumpear 01f 'of the transfer truck.
  • a normally upright lever 38 To receive "the car for the next dumping operation a normally upright lever 38, is 'journaled on a pi'ntle shaft secured between the intermediate longitudinal sills 21, and has attached thereto bars or plates 39, on each sidethereof, andat its extreme lower end is providedwith a counter weight t0,consisting of ,a series of built-up plates i which act normally to hold said lever 38, in
  • the operation is 1 as follows
  • the dump car 2 is hauled upwardly on the inclined track V-rails 1, by the cable 3, and
  • the draft upon the cable 3 is re leased, allowing the transfer truck 10, and dump car2, to move downwardly on the rails 9,-into position. on the rails 8, the dump car 2, being prevented from rolling 0H of the transfer truck by the hook latch lever 30.
  • the plates35,onthe end of the connected bars 34 strike against the transverse P13621111 12, thereby throwing the crank arm 33, forwardly to depress the latch lever 30, and releasewthefront axle. of the dump car;
  • the latch lever 25,1on the transfer truck slides over the upper end of the tranrverse 1 bea1n I 12, and latches therewith to lock the transfer truck from movement.
  • a device of the class described a transfer truck, rails thereon, a dump car adapted. to be drawn onto the-rails on said transfer truck, abutments on the transfer truck against which the dump car is drawn I to cause movement of the transfer truck with a actuated by the dump car moving upon the transfer truck to' release said locking mechamsms, toperm1t movement of the transfer truck with the dump. car thereon.
  • a transfer truck In a device of'the class described, a transfer truck, a dump car adapted to be drawn thereon, 'means locking the dump carupon the transfer truck, locking mechanisms for the transfer truck adapted to be released to permit movement of the truck with the dump car by the dump car moving thereon, means for. releasing the dump car locking means after a dumping operation to permit the dump car to move off of said transfer ⁇ truck,and a mechanism for automatically restoring said dump car locking means to normal'position by the movement of said dump car off of. the transfer truck;
  • a transfer truck means locking the same from movement, a dump car adapted to be drawn on said transfer truck, mechanisms. for releasing saidimeans by movement of the dump car onto said transfer truck to permit movement of the dump car and transfer truck, means on said transfer truck for holding the dump car in locked position thereon, releasing means therefor to permit the dump car to moveoff of said transfer truck after a dumping operation, andmeans pivoted on saidtransfer truck for restoring sa1d dump car lockmg means to normal positlon to v lockingly receive the dump car for'its neXt operation. a v 5.
  • a v 5 In a device of the class described, a
  • a transfer truck rails thereon, a dump car adapted to be drawn over the rails on said transfer truck, a locking mechanism on the transfer truck adapted to interlock with the dump car drawn thereon, and locking means locking said transfer truck from movement releasable by movement of the dump car thereon.
  • track rails, a dump car, movable thereover, another setof track rails of wider gage a. transfer truck movable thereover, track rails on said transfer truck of the same gage ass-aid first mentioned track rails adapted to receive the dump car moved thereon, means on the transfer truck to automatically lock the dump car thereon, mechanisms to lock the transfer truck from movement automatically released to release the transfer truck by movement. of the dump car onto said transfer truck.
  • a transfer truck In a device of the class described, a transfer truck, rails thereon, a dump car adapted to be moved upon said transfer truck, abutments on the transfer truck adapted to receive the dump car thereagainst to cause movement of the transfer truck when a draft is exerted upon the dump car, means operating automatically to interlock with the dump car to hold the same upon the transfer truck, locking means to prevent movement of the transfer truck released by movement of the dump car thereon, said locking means operating automatically to again lock the transfer truck when the dump car is moved therefrom.
  • a dump car adapted to be moved upon the transfer truck on said rails, looking means for lockingthe dump car upon the transfer truck, means locking the transfer truck from movement, mechanisms con nected thereto for automatically releasing the transfer truck locking means by movement of thedump car thereon, and releasing means on said transfer truck to release said dump car locking means to permit the dump car to move ofi of the transfer truck after the dump car has emptied.

Description

W. 1. BLACK. AUTOMATIC TRANSFER FOB DUMP CARS.
f APPLICATION man oEc.i6.19ls. T Lfl wfiw Patented m. 11,1917.
4 SHEET HEET I.
W. 1. BLACK. AUTOMATIC TRANSFER FOR DUMP CARS.
APPLICATION FILED DEC-16. I9I6.
rammed Dec.- 11,1911.
4 sums-sum 2.
w. 1. BLACK. I AUTOMATIC TRANSFER FQR DUMP CARS.
APPLICATION 11, 191?. SHEETS-"SHEET 4.
. Patenwdl My,
. EEZ
FILED 056-16-1916-- si ma T1 ring rio;
,wILLrA /rhJQsnack, or oiiIoAeo, ILLInois.
misses."
To all whom it may concern: v a; i Be it known that I, WILLIAM JPBLAGK, a citizenof the United States, and a resident of the city of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in an Automatic Transfer for Dump-Cars; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to .thefaccompanying drawings, and to the numerals of reference marked thereon, specification. a a i a a Heretofore, where dump cars have been used in quarries and in other instances; the material discharged from the dump car often strikes the track rails asit is dumped from the car to the receiving means prowhieh form apart of this vided below the track. [It has been found,
particularly where the dump car is"drawn upwardlyover an inclined track, Jto-a position over a crusher, that the large pieces of stone or other material of considerable weight when dumped from the car by elevating'the car upwardly on. the inclined track, strike the track rails over which the car has been drawn, and often break or fracture the same. Infect the occurrence is so frequent as to seriously interrupt operation of the ap- .30
paratus. i n It is an object therefore of this invention to. provide a dump construction whereby dump carsare run upon a transversetruck which is drawn with the dump car upwardly on a dumping incline thereby leaving an open space of considerable width for discharge of the material rearwardly of the truck, between the spaced rails on which the transfer'tru'ck moves, so'that there is no likelihood of the material discharged'strik ing the spaced-rails on which the transfer truck is mounted. i
, It is also "an object of this invention to provide a dump construction comprising. an
inclined track leading upwardly to a horizontal dumping platform with the crusher disposed therebeneath and with widely sp'acedrails onsaid platform on whichwa transfer truck is mounted, said transfer truck is provided with rails in register with I Spe'ificationof Letters Patent.
nuroivrii'r c rimlvsrnn roe DUMP-CARS! the inclined trackrails so as to receive the Patented Dec ll, luff.
. Application filedDecmber 16,1916. Serial No. 137,380. r
dump carthereon and to move bodily with y,
the dump car upwardly on widelyispaced in- 'clined rails to permit discharge of the contents of the dump car into the space vbetween therails of the transfer truck at the horizontal platform for discharge downwardly to the crusher. i
Itis also an object ofthis invention to provide a dumping construction embracing an inclined track fora dump car leading to a horizontal dumping platform on which a transfer truck is mounted to roll upwardly upon a suitable incline and with auxiliary rails mounted upon the truckadapted to receive the dump car drawn thereon and thereafterto permit movement of the transfer truck with the dump car upwardly on the incline so that the contents of the dumpcar will be discharged therefrom through a space in the horizontal platform to suitable receiving means. 7 r it It is furthermore an important object of this invention to construct a dump construction for a dump-car wherein the dump ear moves upon a transfer truck which thereafter moves automatically with the dump car upwardly into adumping position for the dump car, andafter the dumping operatiomcarries the dump car downwardly and locks in a fixed position permitting the dump car to continue its course downwardly over rails provided therefor to rec iv ani other charge of material. 7 1
It is finally an object of this invention provide a dump construction wherein the dump car is moved on to a transfer truck and automatically locked therewith and acts automatically to release the transfer truck for movement whereby the car is conveyed upon the truck to dumping position and thereafter returned upon the truclgthe car a then actlng automatically to permit locking of the truck in position and release of the car from the truck, whereby the car may proceed onwardly 01f of the truck to receive another charge of material.v
, The invention (in a preferred form) is illustrated in the drawings and hereinafter more fully described.v i i line 5-5 of Fig. 3, with parts omittedand 1 parts shown in elevation.
Fig.- 6 is asection online 6-6 of Fig. 3;
M Fig. 7 is a detail section taken on line 7-? 8 is, a sectional detail ftaken on line 82- 8 of Fig.
-' *Fig." 91s; a detail side View of the n of the 'st-Op 'lever.fortlie truck; r
' 'of'Fige.
: The refere'nce numeral l-indicates Fig. 10 is a bottom plan view thereof. Fig; 11 is afs'ectiona-l detail-taken'on line 11 -11 of Fig. 3.
Fig-1 12 is detail section on line 12-12 Fig.=-13 is a detai-l 'section 'on line 13-13 of Fig-3, v
. Fig-leis a section on line14:14 of As' s'hown-inthe drawingsz' I an upwardly-inclined track, over which a dump car, denotedas a' whole by the reference numeral 2-, is adapted to be drawn by a cable'3-,'attached to the forward end of the dump car, and leading upwardly into a shed structure 4, built upon a framework 5,
. within "which suitable power driven winch mechanisms a'reprovided to draw the dump car gupwardly. The upwardly inclined track 1, terminates at its upper end atfa horizontal platform; which "is built at the upperend of a receiving means intowhic'h the material from the dump car "is discharged. Built upon the horizontal platform portion-at the upper lend'of'the' receiving pit structure-6, are track railsS, the
gage of'which, asclearly shown in F ig. 1, is
considerably greater thanf the gage of the track rails 1,"'and'said track railsS, are inclined upwardly at one sideof the receiving pit, as'denoted by thereference numeral 9, leading upwardly'toward the shed structure A, witliinwhich the "power mechanisms are mounted.
\ 'As clearly shown in Figs. 1 and 2, a truck, denoted by the reference numeral 10, is mounted upon the track rails 8, and is provided with supplementary track rails 11,
l which, when the truck is onsaid rails S,
register with the upperend of the track rails 1, which are disposed above the track ran e; supported upon a transverse I-bea n 12, so that the dump car-2, drawn upwardly on the track rails 1, is drawn over and upon truck and dump car may be hauled upwardly on the inclined track rails 9, and
the contents of the dump ear 2, discharged from the rear end thereof into the pit structure ('3, between the widely spaced rails S.
The truck 10, consists of channel side sills 13, and built up end sills, each of which consists of two ohannels 14:, faced toward oneanother as shown in Figs. 5 and G, and with the end' sills secured to the side sills by angle corner bracket plates 15. Plates 16, are secured upon the'top surface of the respective end sill channels 14, as shown clearly in F igs. 3 and 7, and secured on said plates 16, and extending longitiulinally of the truck in parallel relation, are the track rails 1-1, of the same gage and adapted to register with the track rails 1. A pair of diagonally disposed truss rods 18, are connected between the respective bracket plates 16, as shown clearly in Fig. 3. Journaled within the end sill channel members 11, as clearly shown in Figs. 3 and 5, are axles 19, and, on the outer ends thereof, are rollers or wheels 20, adapted to roll upon the track rails 89.. Extending centrally and longitudinally of the truck frame, are intermediate channel sills 21, having their ends secured toflthe interior surface of the end sills by bracket plates 22.
As clearly shown in Figs. 3 and 4-, abutment members 23, curved on their inner surface are mounted upon the'ends of the track rails 11, to receive the front wheels, 2st, of the dump car,'seated therein when the dump car 18 drawn upon the truck in the manner shown in F 2. The entire truck 10, is held secured'in latchedposition by a latchlever 25, which, as shown in 'Fig. 4, engages over the upper end of the transverse I-beam 12 Said latch lever 25, is pivoted upon the rear end sill of the truck and is provided with a tail. lever extension 26, to which is connected a long actuating link or rod 27. The forward end of said actuating link or rod 27 is pivotally connected to the lower end of a normally upright lever 28, which, is adapted to be struck by the front axle of the dump car, as shownin Fig. 5, and tilted forwardly, thereby pulling the latch lever 25, upwardly through the intermediate link 27, to release the truck for movement. Upwardly extending and rearwardly bent bars 29, are secured to the front end sill ofthe truck, and are positioned to receive the. front axle of the dump car engaged therebenea-th,
Cir
Wed-3051 as "clearlyshown iii'Fig. 5, to holdth'e diimp car to the truck, and prevent tiltingof the same therefrom when the associated truck and dump car are drawn upwardly uponthe inclined track rails 9. 1 e r Mechanisms are also provided for posi tively holdingthe dump car upon the truck co-acting with bars 29,- for 1 theT-purpose;
This mechanism comprises a latch lever or hook member 30, shown in Figs. 4: and 5,
otally connected to the end thereof is a long link or lever3st co1isisti1i "of a air of flat bars spaced apart and leading rearwardly' of the truck, andat "its rear end having a plate 35, boltedbetween the flat bars, with i a roller 36, journaled therein.-
' [A link 37, as shown in'Figs. 4t and 11, is connected" between the latch lever 30, and the downwardly directed crank 33." The plate 35, is adapted tdabutagainst the upper end of" the transverse I-beam12, when the truck movesv rearwardly after a dumping operation tothereby cause actuation of the crank 33, as shown in Fig. 6, to swing the latohlever 30, dow'nwardly and release the front axle of thedump car for movement of thefidumpear 01f 'of the transfer truck. To receive "the car for the next dumping operation a normally upright lever 38, is 'journaled on a pi'ntle shaft secured between the intermediate longitudinal sills 21, and has attached thereto bars or plates 39, on each sidethereof, andat its extreme lower end is providedwith a counter weight t0,consisting of ,a series of built-up plates i which act normally to hold said lever 38, in
upright position. Secured on one end of the bars39, as shown in Fig. llfareiaseries of plates affording another counterweight 41,and on the other end of said 7 bars 39, are journaled spaced rollers 42,
spaced apart the samedistance asthe bar 341, whlch constitute the connecting lever betweenthe crank arms 33,]andthe spacing abutment plate 35. Said rollers 42, are
adapted to be swung upwardly by rearward movement of the lever 38, beneath the bars 3 1, to elevate the same and permit the roller 36; to track over the; top surface of the transversel-beam 12, as shown in Fig. 5, permitting the latch lever30, toswing' up wardly into normal latching position.
"The operation is 1 as follows The dump car 2, is hauled upwardly on the inclined track V-rails 1, by the cable 3, and
' moved Einto horizontal position Y upon the transfer truck 10, as shown in Fig. 2. As
the dump car 2, movesonto the transfer truck the front axle of the dump car strikes the latch lever 30,1as shownin dotted lines in Fig. 5, to depressthe same, thereby ele vating the counterweight32, and continuing its movements, strikes'against the lever 28, whichfthrough the link 27,ser'ves to elevate the latch lever 25, to release the transfer truck 10, from thestationarytransverse 1- beam 12. The track rails 11, mounted upon a the transfer truck, are of course in register with the track rails 1, whereby the dump car is permitted to bedrawn onto the transfer truck,- and by so moving the front wheels 24. of'the dump car move against the abutments 23, on the transfer truck, the front axle thereof moving beneath the bent bars 29. The continued draft upon the cable 3, serves to draw the associated transfer truck and dump car upwardly upon the inclined track rails 9,011 which the rollers or wheels 20, of v the transfer truck move. 'As a consequence,
as the associated dumpcar 2,and transfer car are drawnupwardly upon the inclined rails 9, the contents of the dump car are dis' charged rearwardly therefrom into the receiving pit 6, between the widely spaced track rails 8, so that there iS'nO possibility of the material discharged striking the rails,
with resultant injury thereto. After the contents of the dumpcar 2, have been discharged the draft upon the cable 3, is re leased, allowing the transfer truck 10, and dump car2, to move downwardly on the rails 9,-into position. on the rails 8, the dump car 2, being prevented from rolling 0H of the transfer truck by the hook latch lever 30. As the transfer truck moves into position on the rails 8, the plates35,onthe end of the connected bars 34:, strike against the transverse P13621111 12, thereby throwing the crank arm 33, forwardly to depress the latch lever 30, and releasewthefront axle. of the dump car; Also the latch lever 25,1on the transfer truck, slides over the upper end of the tranrverse 1 bea1n I 12, and latches therewith to lock the transfer truck from movement. As the dump-car continues its rearward move ment along on the rails 11, of the transfer truck, onto its own rails 1, the front axle strikes theupright lever 38, thereby swinging the same rearwardly, as shown in dotted lines in Fig. 6, so that the rollers {12, are proj ected upwardly beneath the connected links or lever "-bars 84-. elevating the same so that the roller *36,fon the outer end thereoftracks over the upper surface of the transverse beam 12, permitting the counterweight 32, to
again throw the latch lever 30, upwardly v mtoposition tolatch-with the frontaxle of the dump car in the next dumping operation, as in the operation previously described.
I am aware the various details of construction may :be varied through a Wide range without departing from the principles of this invention, and I therefore do not purpose limiting the patent granted otherwise than necessitated by the prior art.
I claim as my invention;
"1. In :a device of the class described, a transfer truck, rails thereon, a dump car adapted. to be drawn onto the-rails on said transfer truck, abutments on the transfer truck against which the dump car is drawn I to cause movement of the transfer truck with a actuated by the dump car moving upon the transfer truck to' release said locking mechamsms, toperm1t movement of the transfer truck with the dump. car thereon.
In a device of'the class described, a transfer truck, a dump car adapted to be drawn thereon, 'means locking the dump carupon the transfer truck, locking mechanisms for the transfer truck adapted to be released to permit movement of the truck with the dump car by the dump car moving thereon, means for. releasing the dump car locking means after a dumping operation to permit the dump car to move off of said transfer \truck,and a mechanism for automatically restoring said dump car locking means to normal'position by the movement of said dump car off of. the transfer truck;
l. In a device of'the class described, a transfer truck, means locking the same from movement, a dump car adapted to be drawn on said transfer truck, mechanisms. for releasing saidimeans by movement of the dump car onto said transfer truck to permit movement of the dump car and transfer truck, means on said transfer truck for holding the dump car in locked position thereon, releasing means therefor to permit the dump car to moveoff of said transfer truck after a dumping operation, andmeans pivoted on saidtransfer truck for restoring sa1d dump car lockmg means to normal positlon to v lockingly receive the dump car for'its neXt operation. a v 5. In a device of the class described, a
track, a dump car movable thereover, another track of wider gage than said first mentioned track, a transfer truck movable thereon, rails on said transfer truck of the same gage and adapted to register with said first mentioned track to receive the dump car thereon, and means drawing the associated dump car and transfer truck along on said second mentioned track to discharge the contents of the dump car between the rails of the second mentioned track.
6. In a device of the class described a transfer truck, rails thereon, a dump car adapted to be drawn over the rails on said transfer truck, a locking mechanism on the transfer truck adapted to interlock with the dump car drawn thereon, and locking means locking said transfer truck from movement releasable by movement of the dump car thereon.
7. In a device of the class described, track rails, a dump car, movable thereover, another setof track rails of wider gage, a. transfer truck movable thereover, track rails on said transfer truck of the same gage ass-aid first mentioned track rails adapted to receive the dump car moved thereon, means on the transfer truck to automatically lock the dump car thereon, mechanisms to lock the transfer truck from movement automatically released to release the transfer truck by movement. of the dump car onto said transfer truck.
8., In a device of the class described, a transfer truck, rails thereon, a dump car adapted to be moved upon said transfer truck, abutments on the transfer truck adapted to receive the dump car thereagainst to cause movement of the transfer truck when a draft is exerted upon the dump car, means operating automatically to interlock with the dump car to hold the same upon the transfer truck, locking means to prevent movement of the transfer truck released by movement of the dump car thereon, said locking means operating automatically to again lock the transfer truck when the dump car is moved therefrom.
9. In a device of'the class described the combination with a transfer truck, and rails thereon, of. a dump car adapted to be moved upon the transfer truck on said rails, looking means for lockingthe dump car upon the transfer truck, means locking the transfer truck from movement, mechanisms con nected thereto for automatically releasing the transfer truck locking means by movement of thedump car thereon, and releasing means on said transfer truck to release said dump car locking means to permit the dump car to move ofi of the transfer truck after the dump car has emptied.
10. In a device of the class described the is} leased by movement of the dump car thereon combination with a transfer truck and rails there-on, of a dump. car movable upon the rails of the transfer truck, looking mechanisms for locking the dump car upon the 5 transfer truck, means co-acting' with the dump car on the transfer truck to cause movement of the transfer truck With the dump car, a locking device to lock the transfer truck from movement automatically reto initial position after movement with the dump car to discharge position.
subscribed my name in the presence of two subscribing wltnesses.
Witnesses: 7
CHARLES W. HIL S, J r.
and releasing mechanism for the automatic EARL M. HARDINE.
Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patenta. Washington, D. G. i
locking means for the dump car to release the same When the transfer truck is returned 15] In testimony whereof I have hereunto -WILLIAM J. BLACK.
US13738016A 1916-12-16 Automatic transfer for dump-cars. Expired - Lifetime US1249305A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2525351A (en) * 1947-12-01 1950-10-10 Fred W Hennings Dual wheel handling apparatus
US2639024A (en) * 1948-02-27 1953-05-19 Kneer Paul Conveyer
US3021795A (en) * 1958-11-04 1962-02-20 Crescent Metal Products Inc Latching mechanism
US3057305A (en) * 1959-05-27 1962-10-09 Robert H H Behrens Amusement device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2525351A (en) * 1947-12-01 1950-10-10 Fred W Hennings Dual wheel handling apparatus
US2639024A (en) * 1948-02-27 1953-05-19 Kneer Paul Conveyer
US3021795A (en) * 1958-11-04 1962-02-20 Crescent Metal Products Inc Latching mechanism
US3057305A (en) * 1959-05-27 1962-10-09 Robert H H Behrens Amusement device

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USRE14901E (en) 1920-06-29

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