US1736520A

US1736520A - Car-dumping apparatus

Info

Publication number: US1736520A
Application number: US180196A
Authority: US
Inventors: Robert W Capper
Original assignee: IND BROWNHOIST ENGINEERING COR
Current assignee: IND BROWNHOIST ENGINEERING COR; INDUSTRIAL BROWNHOIST ENGINEERING Corp
Priority date: 1927-04-01
Filing date: 1927-04-01
Publication date: 1929-11-19
Anticipated expiration: 1946-11-19

Description

Nov. 19, 1929. R. w. CAPPER 1,736,520

CAR DQMPING APPARATUS Filed April 1, 1927 4 Sheets-Sheet 2 awe away Nov. 19, 1929. R. w. CAPPER 1,736,520

CAR DUMPING APPARATUS Filed April 1, 1927 4 Sheets-Sheet :5

Nov. 19, 1929. R. w. CAPPER 1,736,520

GAR DUMPING APPARATUS Filed April 1, 1927 I 4 Sheets-Sheet 4 gwvenkot 0PM 11/. QD M/ 3%., WM, jm/zzw Patented Nov. 19, 1929 UNITED? STATES; A PATENT I opp-IC ROBERT-W. CAPIER, or GARFIELD H I HTS,- OHIO, ASSIGNOB; BY MESNE ASSIGN- MENTS, TO INDUSTRIAL BRowm oIsT ENGINEERING conronarron, A CORPORA- TION OF OHIO" Application filedv April 1;

"such means has embodied power -mechanism;

which looks the! device; after it; has. been moved into engagement Withthe car. This;

form of apparatus-is objectionable for the reason that if'a lump of coal, or other mate-' rial being dumped, should be caughtbetween thc'car andthe clamping member, then when the weight of the car is thrown on to: the clamping-member and the coal is crushed, the wheels of the car will leave-therails. This vobjectionhas been overcome-by the use of a system of counter-weights.,- but such system has necessitated theconstruction of towers which increase the cost; of the dumperj to a: prohibitive degree.

One of theobje ts-of the present invention is to make a rotary car dumper whichhas.

clamping'mechanism that can be operated to; locxthe ca'r onto the rails independently-of any material which may be caught-between the clamping member and the can. In addition, myinvention contemplates. the construction of a rotary car dumperwhichcan be successively operated to .holdthe car, clamped to the railsv without the necessity 'for anex- 30? tensive super-structure, such as has been here-v tofore required with the use of counterweights. I

A further object of thisinvention is to make a rotary car dumper-which is simple inconstruction yet has suflicient strength that it may be successively operated to permit the dumping of an extremely heavy load. 7

Referring now to the drawings Fig: 1 is a vertical transverse section through a pit showing a car dumper embodying my invention, associated therewith, and illustrating the dumper in end elevation, the planeofthe section being indicated by the line 11 on- Fig; 2; Fig. 2 is-a side elevation of the car dumper shown in Fig. land more particularly, is, a longitudinal" vertical section throughthe'pit on a plane indicated by the line 22 in Fig. 1; Fig. 3 is a verticaltransverse section through the car dumper on a planeindicated by: the line ii-3 in Fig. 2;

can-Dunning; A-PBARATUS 1927 Serial No. 180,196;

Figs. 4, 5, 6 and? are sectionstaken through the car dumper onlthe' planes indicated-by the correspondingly numbered lines invFig. 3 Figs. 8*and; 9 are diagrammatic views illustrating the cable; reeving operation" forv oneset of counter-weights while the car dumper, is rotated; Figs; 10 and 11 are two diagrammatic-v-iews showing the cable-reeving opera tion for another set of: counter-weights'during; thecar dumping-operation.-

The car "dumper embodying my. invention isillustrated as arotary cylindrical cradle 10 which is shown as having bearing rings 11 and12 adjacent-the ends thereof-,and as having annular counter-weight guides 13 dis-v posed at spaced intervals around; the. periphery thereof between the bearingi'rings. The; cradle isjournalled betweenvsetsof wheels ltarid-lflwhich are arranged toiengage each bearing ring. The sets of wheels are shownas: beingrespectively journalled in brackets lfiand 17: which in turn are pivotally 0011- nected asat 1'8 and 19 respectively to a base 20. The cradle isalso shown-as having transversely extending tracksi2lon which a carriage22 is mounted. Thecarriage has rails 23supportedthereon for receiving a car indicated at 25. The cradle also has vertically eXtending-guideways 30 which are arranged in pairs-011 oppositesides of the car receiving space. There are four pairs of such guidewaSys illustrated in thedrawings lidably mountedwithin each: pair ofvertical guideways 30 is a car clamping member whichinormally, as illustrated in Figs. 1. and 3, isdisposed out of engagement with the top ofthe In the preferred form, this clampingdevice embodies two

members

31 and 32 which are connected by a hinge pin 38, and which areadapted to slidably engage one of the guideways 30 The clamping devices are independently operable by counter-weights so that acar' may be firmly held upon the rails even thougha lump of coal, or other material, may be caught between the car and the 'clampingfmember. I I

In; the preferred construction, I employ two sets of counter-weights, oneindicated at 40, and. another at 41. These weights are mounted'to move within the guideways: 1.3,.

when the cradle is rotated, and to facilitate such movement, the weights are supported upon

wheels

42 and 43 respectively. The weight is intended to clamp the car to the rails, and to exert clamping pressure thereon until it is brought back nearly to the original position. The weight 41 is much lighter than the weight 40, and is intended for use in raising the clamping device away from the car and holding it normally in such raised position.

To eliminate the necessity for the use of an overhead super-structure, I employ reeving apparatus by means of which the weights may be satisfactorily supported upon the cradle, and yet may function to operate the clamping devices in the desired manner. In Figs. 3 and 8, the reeving arrangement is illustrated as a cable 50, one end of which is attached to the base 20 and the other end of which is attached to the counter-weight 40. Leading from the base, the

cable passesover sheaves

51 and 52, which are mounted on the cradle and thence over

sheaves

53 and 54 which are mounted upon the clamping member 31,

thence around the

sheaves

55, 56, 57 58, 59 and 60. In peripheral alignment with the sheaves to 60 are

additional sheaves

61, 62, 63 and 64 which are adapted to'be progressively engaged by the cable as the cradle is rotated in a direction indicated by the arrow in Fig. 8. These last mentioned sheaves engage that portion of the cable between the sheave 51 and the base 20 as indicated in Fig. 9.

Thus, the cradle moves with relation to the counter-weight 40 (except for the slight movement necessary to permit the clamping device to close) during the dumping operation. When in the position indicated in Fig. 9, the counter-weight exerts maximum pressure upon the clamping member even though the counter-weight stop 65 has moved from the position shown in Fig. 8, to that shown in Fig. 9. In other words. the counter-weight has rolled on the periphery of the cradle during the tilting movement.

Referring now to Fig. 10, the counterweight 41, is shown as holding the clamping device away from the car, so as topermit movement of thecar on and off the cradle. WVhile the clamping device is so held, the

other counter-weight 40 is held against the stop 65, and hence is exerting no clamping pressure. The reeving arrangement shown inFig. 1O embodies a cable one end of which is fastened to the base 20 and the other end of-which is fastened to the counter-weight 41. Leading from the base the cable passes over

sheaves

71, 72, 73," 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85 and is then attached to the counter-weight. The

sheaves

80 and 81 are mounted on the clamping device, while the remaining sheaves are mounted upon the cradle.

When the tilting operation of the cradle is started, the first action, as heretofore explained, is the movement of the clamping device against the car, under the force exerted by the counter-weight 40. This action causes the counter-weights 41 to move with the cradle until the clamping action is effected, and then to move with relation to the cradle by rolling on the periphery thereof, in the guideways 13. While so rolling the reach of the cable between the sheave 85 and the counter-weight progressively passes over

sheaves

86, 87 and 88, while the counterweight remains in the, position shown in Fig. 11 where it exerts maximum torque and keeps the cable taut.

On the return movement of the cradle the counter-weight still remains in the position shown in Fig. 11, until the stop 65 engages the counter-weight 40, whereupon the weight 41 moves with the cradle and raises the clamping member away from the car.

To actuate the cradle for the tilting operation I have shown an electric motor 90, which is suitably connected by reduction gearing to a shaft 91 which extends for substantially the length of the cradle and carries a pinion 92 near each end thereof. These pinions are adapted to engage annular racks 93 which are mounted upon the periphery of the cradle frame. In the'preferred arrangement, the motor is reversible so as to permit rotation of the cradle in either direction.

The operation of a car dumper embodying my inventionis as follows :Normally the carriage 22 is in the position shown in Fig. 1, that is. on the left hand end of the laterally extending rails 21. In such position, the rails 23 are in alignment with the rails 8 and 9 at opposite ends of the pit. The car to be unloaded is. then run into the cradle. The only movement onfthe part of the operator to effect the dumping operation is to start the motor 90. This rotates the cradle in the direct tion shown by the arrow in Fig.1. As soon as the cradle has been rotated a few degrees the carriage 22 starts to move along the trackway 21, under the action of, gravity, until the side of the car strikes the bumpers 95. A

In addition to the lateral movement of the car, the clamping devices start to move downwardly under the 1 action of the counterweights 40, but the distance which the devices must travel before the car is clamped, is sufficiently great that the car is in engagement with the bumpers before the clamping action iseffected. Since the'counter-weights 40 are heavier than those indicated at 41, the last mentioned weights are pulled upwardly with the cradle until the car is clamped to the rails. Thereafter, both sets of counter-weights roll on the periphery of the cradle but on opposite sides thereof. In the meantime substantially the entire weight of the car is countera cted by the cradle. Such counteraction,130.

continues until the cradle has been rotated 90. During such movementpart of'the contents are emptied into the pit. Continued rotation of the cradle then shifts-the Weight of the car onto the clamping devices but since'the counterweight 40 is heavier'than the Weight of the car, the car is easily maintained on the rails. Thus, the cradle mayberotated 1609, to effect a complete dumping operation While the car is effectively clamped'tothe rails. If part of the contents should be caught between the car and any one of the clamping devices, and should subsequently be'crushed, there is no danger of car movement occurring since the counter-Weights 40 immediately force the clamping devices and the crushed material against the car. By using independently actuated clamping members, I can hold the {car in clamped position and can distribute the working stresses throughout the length "of the cradle.

After the car has been dumped, the operator need only reverse the-direction ofmoto'r rotation to bring the empty car back to original position. During such return movement; the car remains clamped tothe rails until the stops 65"engage the counter-Weights 40. Such engagement is effected before the cradle has returned to the original position, and the position of each stop is so regulated that there is ample time for the counter-weights 41 to remove the clamping devices from contact with the car, to allowthe carriage 22-to roll, by

gravity, back to the position shown in Fig. 1;

A car dumper made in'accordance With-my invention is advantageous, in that the entire action of the shifting and holding ofthe car is automatic in operation. 'This eliminates the necessity for personal attention on the partof the operator except that'of starting the inotor,and reversii1git at the proper time; In this Way a train of cars may be unloaded in an expeditious manner I-claim: i

1. A car dumper comprising in combination, a car receiving-cradle, means forrotating the same, said cradle having vertically extending guideways therein, a clamping member shiftablein the guid'eways, acounterweight normally-tending to hold the memher out of engagement with; a car in the cradle, another counter-Weight tending to force the membe'rfinto engagement with the car when the cradle is rotated, gsaid counterweights being carried by and" mounted on opposite :sides of the cradle and adapted to move with reference thereto.

2. A car'dumper' comprising in combination, rotary car receiving cradle, means for rotating the same, a carclamping member carried by the cradle and shiftable with relation thereto, f two. counter-Weights, opera:

tively connected to the clamping memberJand carried by the cradle, one counterweight tending to force the clamping member :into

engagement with "the "car, means .for render ing said counter-weight in'aetive "during a portion of thecradl'e rctativeimovement, and

the other counterweight being arranged to a release the clamping member while the first mentioned counterweight is'ina'ctive.

A car dumper comprising in combine clamping member slidably mounted on thecradle, counter-Weights movabl-y carried by the cradle an'd'acting on the member to' move it in opposite directions,.one ofsaidcounten Weights being heavier than'the other, and means for rendering the heavier Weight in active to permit the lighter 'weig'h't t'o actuate the member during a portion ofthe rotative movement of said cradle: I

5. A car'dum'per comprising 'incombi'na tion, a rotary cradle, means for rotating the same, a car clamping membermountedon the cradle for movement With reference thereto, two eounter-Weightsacting on said member and tendingto move it in opposite directions for clamping and releasing pur'-' poses, one counter-Weight being heavierthan the other, a supportfor the oradleycables connecting the respective counter-Weights to said support, guidesheaves forisaid cables, said sheaves being mounted upon the cradle and clampingv ,themember in such manner that-one counter-welght moves the member into'clamping position When the cradle is to tated a-pred'etermined amount in one direc tion, While the other counter-weightxreleases' the clamping member "when the cradle is moved a predeterminedamou'nt in the opposite direction. 7

6; A car dumper comprising in combination, arotary cradle, a car'clamp'ing mom-- ber slidably mounted therein, means for rotating. the cradle, a counter-Weight actuated by movement of the cradle for automatically moving the member into olampingposition after the cradle has been rotated a predeter mined degree-in one direction, and a lighter counter-weight for releasing the member whenthe cradle has been rotated a 'prede't'er: mined degree in the opposite directiomsaid counterwveights being carried by the cradle,

and being arranged to be moved With ref-K erence thereto'during the do ping operation. a

7. A car dumper, comprising in combinaing member carried by the cradle and movable with reference thereto, a pair of comater-weights of different mass carried by the cradle and operatively connected to the member in such manner that the counter-weights move with the cradle during a portion of the dumping operation, and then with reference to the cradle during another portion of the dumping operation, whereby said member is automatically moved into and is held in clamping engagement with the car.

8. A car dumper comprising in combination, a rotary car receiving cradle having annular guideways extending around the periphery thereof, a clamping member carried by the cradle and shiftable with reference thereto, a pair of counter-weights movable in said guideways, cables connecting the respective counter-weights to the clamplng member. said counter-weights being normally disposed on opposite sides of the cradle, one of said counter-weights functioning to urge the member into clamping position, and other counterweights functioning to release the clamping member.

9. A car dumper comprising in combination, cradle, a clamping device carried thereby and movable with relation thereto, and a counter-weight carried by the cradle and movable with relation thereto, and means anchored off of the cradle and connected with the counter-weight and clamping device for actuating the car clamping device into coaction with the car during movement of the cradle, a lighter counter-weight on the cradle adapted to move the clamping device away from the car, and means for rotating the cradle.

10. A car dumper comprising in combination, a cradle, means for rotating the cradle, a clamping member mounted for radial'movement in the cradle, and a flexible member connected with the clamping member and anchored at a stationary point independent of the cradle and provided with a counterweight mounted on the cradle for actuating the member to clamp a car to the cradle consequent upon the rotation of the cradle.

11. A car dumper having in combination, a

rotary cradle, means for rotating the same, a car clamping member normallyheld out of engagement with a car on the cradle, a counter-weight carried by the cradle and adapted to be moved along the periphery thereof, a cable connected to the counterweight, and intermediately connected to the member and anchored independently of the cradle so that the member is brought into engagement with the car during a portion of the rotative movement of the cradle, and is then held in engagement with the car during the remaining portion of the rotative movement.

12. A car dumper, comprising in combina tion, a rotary car receiving cradle, a car clamping member carried by the cradle and movable with reference thereto, said memher being normally held outof engagement with the car when the cradle is in one position, a counter-weight movable in a peripheral direction on the cradle, a support for the counter-weight on the cradle adapted to move away from the counter-weight wnen the cradle is rotated, and means for supporting the counter-weight from a point off of the cradle, said last mentioned means being connected to the clamping member, and functioning to urge it into clamping engagement with the car and to hold it thereagainst during the rotative movement of the cradle in one direction.

13. In a car dumping apparatus, the combination of a cradle adapted to be turned, a clamping device movably carried by the cradle, a counter-weight movably carried by the cradle, and means connected to a point off of the cradle and to the counter-weight and intermediately engaging the clamping device to cause the clamping device to act automatically when the cradle is turned.

14. In a car dumping apparatus, the combination of a cradle adapted to be turned on an axis, a clamping device movably carried by the cradle,'a counter-weight movably carried by the cradle, a cable connected to a stationary point and to the counter-weight and intermediately to the clamping device to cause the clamping device to act automatically when the cradle is turned on its axis, and means for automatically releasing the clamping device when the cradle is turned in the opposite direction.

15 In a car dumping apparatus, the combination of a cradle adapted to be turned and equipped with a set of sheaves, a clamping device movably carried by the cradle and equipped with sheaves, a counter-weight movably carriedby the cradle, and a cable anchored to the counter-weight, thence passing acrosscradle sheaves, thence upwardly across clamping device sheaves and thence downwardly and finally anchored 0d of the cradle.

16. In a car dumping apparatus, the combination of a cradle adapted to turn, a clamping device carried thereby and movable with relation thereto, a counter-weight carried by the cradle andmovable with relation to it, a support onthe cradle adapted to prevent movement of the counter-weight on the cradle and means for causing the counter-weight to react on theclamping device'when the said support is' withdrawn from the counterweight;

17. In a car dumping apparatus, the combination of a cradle adaptedto turn, a clamping device carried thereby and movable with relation thereto, a counter-weight carried by the cradle and movable with relation to it, a support on the cradle for the counter-weight positioned to release the counter-weight as the cradle turns from normal position and a cable anchored off of the cradle and to the counter-weight and intermediately movably engaging the clamping device for causing the counter-weight to react on the clamping device when the cradle is turned.

18. In a car dumping apparatus, the combination of a cradle adapted to be turned, a clamping device therein, counter-weights of difi'erent size movably carried by the cradle and connected to operate the clamping device one in the clamping direction and the other in the idle direction.

19. In a car dumping apparatus, the combination of a cradle adapted to be turned, a clamping device movably mounted therein, counter-weights of different mass carried by the cradle and a pair of cables connected to the respective counter-weights and adapted to operate the clamping device, one in the clamping direction and the other in the releasing direction.

20. In a car dumping apparatus, the combination of a cradle adapted to turn, a clamping device movably carried thereby, counterweights of difi'erent mass movably carried by the cradle, two independent ca les respectively connected to the counter-weights, and anchored at points off of the cradle, both cables having an intermediate connection with the clamping device.

21. In a car dumping apparatus, the combination of a cradle adapted to turn and equipped with sheaves, a clamping device movably carried by the cradle and equipped with sheaves, counter-weights of different mass movably carried by the cradle, two independent cables respectively connected to the counter-weights and anchored at points off of the cradle, the cable attached to the heavier counter-weight passing normally from its anchorage about a sheave on the cradle, thence upwardly about a sheave on the clamping device, thence downwardly about a sheave on the cradle, thence to the counterweight, and the cable connected to the lighter counter-weight passing normally from its anchorage about a sheave on the cradle, thence downwardly about a sheave on the clamping device, thence upwardly about a sheave on the cradle, thence to the counter-weight, whereby the turning of the cradle in one direction causes the heavier counter-weight to seat the clamping device and the turning of the cradle in the other direction causes the lighter weight to release the clamping device.

22. In acar dumping apparatus, the combination of a circular cradle adapted to be turned, a clamping device movably mounted therein, and means for actuating the clamping device in the active direction including a counter-weight movably mounted on the circular cradle in a position to be lowered as the cradle turns from normal position, and

a cable leading from the counter-weight and anchored oil of the cradle.

23. In a car dumping apparatus, the combination of a circular cradle adapted to be turned, a clamping device movably mounted therein, and means for actuating the clamping device in the idle direction including a counter-weight movably mounted on the cradle in a position to be raised as the cradle turns from normal position, and a cable lead ing from said counter-weight and anchored off of the cradle.

24. In a car dumping apparatus, the combination of a circular cradle adapted to be turned, a clamping device movably mounted therein, means for actuating the clamping device in the clamping direction including a comparatively heavy counter-weight movably mounted on the circular cradle in a normally upper quadrant thereof, and means for actuating the clamping device in the idle direction including a comparatively light counter-weight movably mounted on the circular cradle in a normally lower quadrant thereof. In testimony whereof, I hereunto afiix my signature.

7 ROBERT W. CAPPER.

CERTIFICATE OF CORRECTION.

Patent No. 1,736,520. Granted November 19, 1929, to

ROBERT W. CAPPER.

It is hereby certified that the assignee in the above numbered patent was erroneously described and specified as "Industrial Brownhoist Engineering Corporation", whereas said assignee should have been described and specified as "Industrial Brownboist Corporation, a Corporation of Ohio", as shown by the records of assignments in this office; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office. 1

Signed and sealed this 31st day of December, A. D. 1929.

M. J. Moore,

(Seal) Acting Commissioner of Patents.