US1080619A - Dumping-car. - Google Patents

Description

C. P. ASTROM.

DUMPING CAR.

APPLICATION FILED JAN.9.1911.

Patented DeofQ, 1913.

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C. P. ASTROM.

DUMPING CAR.

APPLICATION FILED JAN.0.1911.

Patented Dec. 9, 1913.

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DUMPING GAR.

APPLICATION FILED 1,111.9. 1911.

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UNITED STATES PATENT GFFICE.

CARL P. ASTROM, OF EAST ORANGE, NEW ,J ERSEY, ASSIGNOR T M. H. TREADWELL COMPANY, A CORPORATION 0F NEW YORK DUMPINGCAB.

Specication of Letters Patent.

Application led January 9, 1911. Serial No. 601,502.

and more particularly has reference to cars wherein the body is mounted to be moved and simultaneously turned in order to discharge the contents.

The object of the invention is to provide improved actuating means for a slag or cinder car, wherein the movement ofthe car body from its central upright 'position to its outward dumped position Awill be effected by the full stroke of a piston and cylinder acting through pivoted lever connections, whereby a simple and strong apparatus will be produced in a simpler manner than has heretofore been employed.

The invention also comprehends an 'nnproved system of fluid checking means whereby a fluid cylinder and piston operate simultaneously with the working cylinder and piston, and the checking effect is Independent of the differential area between the sides of the piston, and also capable of b eing easily adjusted asmay be desired 1n operation.

The invention will be more fully understood in connection with the description of the accompanying drawings, wherein-- Figure 1 is an end elevation of a dumping car embodying the invention; Fig. 2 is a side elevation; Fig. 3 is an enlarged detail view showing the oil checking passages and oil reservoir, seen from above; Fig. 4 is a side elevation, and Figs. 5 and 6 represent vertical sections showin the valves and pipe connections partly 1n sections on the lines 6 6 of Figs. 3 and 4. Fig. 7 is a detail elevation, partly in section, showing the mounting of the cross-head, the cylinders being removed.

1 represents an end frame mounted on railway trucks 2, and provided with the usual coupling equipments lused on cars of this type. At each end of the end frame are supporting pedestals 5, raised somewhat above the top of the frame, which have their upper faces formed as transverse tracks on which the car body is supported in such manner as to permit the body to move laterally, and simultaneously tilt, in either direction.

6 represents a car body, herein shown as a slag or cinder ladle carried by and fastened to a yoke 7, which is provided at each end with trunnions 8 which rest on the track portions of the respective pedestals 5. Each pedestal has a rack 10, and meshing therein are gears 11 which are keyed to the trunnions 8. The power mechanism for operating the cylinder 11a contains a piston (not shown, but having a piston rod 12). Air or steam is admitted to one or the other side of the piston through pipes 13, 14, from a three-way valve 15, which at the same time controls the exhaust pipe 16 leading from the other end of the cylinder, it being understood that when pressure is admitted to one side of the piston the other side is open to the exhaust.

In order to operate the trunnions 8 and thereby rock the body, a cross-head 17 sliding on a guide 18 is provided. The ends 17 of the crosshead carry a bar 19, and pivoted thereon is a filler block 20, which is adapted to fill the space between one of the crosshead lends 17 and a trunnion block 21 which contains the journal for the end of the trunnion 8. In order to operate the crosshead, a lever 23 is pivoted at 24 to the end frame of the car and connected intermediate its ends by pin 25 with the piston rod 12, and at its upper end connected by pin and slot connection 26 to a projection 27 on the lower part of the crosshead 17.

In the position shown, in Fig. 1, the piston in cylinder 11a is at the right hand, and the filler block 20 is in such position that when steam or air is admitted on the right side of the working piston in cylinder 11a the car body will be dumped to the left by a simultaneous lateral and tilting movement. After the car body has been dumped it can be brought back to center by admitting steam on the left side of the working piston. In order to dump the car body on the right side, it will be necessary to swing the filler block 20 out from between crosshead ends 17 and the trunnion block 21. By now applying power to the right side of the working piston the crosshead will be moved to the left, until stopped by the cross head 17 striking the stop spring 22. Thereupon the filler block 20 can be dropped between the left side of the trunnion bearing block 21 and the left crosshead end 17. If now steam be admitted on the left side of the working piston the car body will be dumped to the right and can be returned from dumped position by an opposite movement.

It has been found in practice that car bodies such as these cannot be satisfactorily controlled when loaded, solely by the steam pressure, because of the momentum which the parts acquire after having once been started in motion, and also because of shifting of the center of gravity. In order to control the movement of the car body, a checking cylinder 30 is provided, containing a checking piston 29 connected to the end of the main pistonrod 12. Mounted on the top of the cylinder 30 is an oil reservoir 31 which is closed by a cover 32. From one end of the cylinder 30 is a pipe 33 leading to a valve chamber 34, and thence by a passage 35 to the oil reservoir 31. From the other end of the cylinder a similar pipe 37 leads through a valve chamber 38, similar to l34, and thence by passage 39 to the oil reservoir. The valve chambers 38 and 34 are alike in construction, as shown in Fig. 5. Each consists of a seat containing a ball or valve 40 which falls by gravity and closes the assage. A screw rod 41 passing througlh a suitable stuiing box is arranged to adjust the opening when the ball is at its lowest position, and thereby to more or less close the passage.

In the position of parts shown in Fig. 1, the car body is in position to be dumped to the left with the working piston and the checking piston 29 at the right ends of their respective cylinders. Upon applying the power on the right side of the working piston the movement commences, and the oil in cylinder 30 is forced by the piston 29 through pipe 33, valve chamber 34, and passage 35 to the oil reservoir 31. Thus the checking effect can be controlled by adjusting the closing of the ball valve in valve chamber 34 for any desired rate. At the same time that the piston 29 forces the oil out of the left end of the cylinder 30,'oil from the reservoir will be drawnv into the right end of cylinder 30 throu passage 39, valve chamber 38 and pipe 3%. It will be seen that the oil can ow freely into the cylinder 30 from the reservoir 31 without being restricted by the particular adjustment ofA the valve chamber 38. When the movement is in the opposite direction, as when returning the car ody to center after havingv been dumped to the left, or when the car body is to be dumped from the center to the right, it will be seen that the rate of checking will be controlled by the adjustment of the valve in valve chamber 38, while the other side of the piston 29l will pump from reservoir 31. By these independent valve and pipe connections in combination with the reservoir, it will be seen that the checking rate can be the same on both sides, and be independent of the differential area of the piston 29, by reason of having a greater effective area on one side due to the absence of the piston rod 12. It will also be seen that the oil reservoir compensate for the difference in displacement due to the volume of the piston rod in the cylinder.

In order to lock the car body in upright position, an operating handle 45 is attached to a transversely extending rock shaft 46. This rock shaft carries dogs 47, 48, which are adapted to engage with corresponding slots on the crosshead guide to lock the car body in upright position by mechanically locking/a depending tongue 51 on the crosshead against movement. When the shaft 46 is rocked to disengage the dogs, the tongue is free to move in the guide slot.

From the foregoing description, it is thought that the nature and advantages of the invention will be understood, and the manner of carrying it out. Various details of construction accordin to well known practice will be used, suc as suitable controlling valves, power, couplings, etc.,.which are not a part of this invention.

Various modifications and changes within the scope of the appended claims may be made without departing from the invention.

Having thus described my invention I declare that what I claim as new and desire to secure by Letters Patent is,-

1. The combination in a dumping car, with a. tilting and movable car body, of a power cylinder and piston, a trunnionl supporting the car body, and an actuating lever pivoted on the frame connecting the movable element ofthe cylinder and piston and the trunnion.

2. The combination in a dumping car, with a tilting and movable car body, of a power cylinder and piston, a trunnion supporting the car body, and an actuating lever connectin themovable element of the cylinder an piston and the trunnion, said lever being pivoted at one end on the car frame.

3. The combination in a dumping car, with a tilting and movable car body, of a power cylinder and piston, a trunnion supporting the car body, an actuating lever connecting the movable element of the cylinder and piston and the trunnion, said lever being pivoted at one end on the car frame, and meansfor shifting the lever independently of the trunnion to enable the car body to be oppositely dumped.

4. The combination in a dumping car, with a tilting and movable car body, of a power cylinder and iston, a trunnion supporting the car bo an actuating lever connecting the movable element ofthe cylinder and piston and the trunnion, said lever being pivoted at one end on the car frame, and means comprising a crosshead and movable block for changing t-he actuating connection from one side to the other.

5. The combination in a dumping car, with a tilting and movable car body, of a power cylinder and piston, a trunnion connected therewith, a checking cylinder and piston, one being connected to said trunnion, means for independently controlling the checking effect in each direction and means compensating in said checking cylinder for difference in fluid displacement on opposite sides of the checking piston.

6. The combination in a dumping car, with a dumping car body, of power actuating means, and checking means comprising a cylinder, a piston in said cylinder and a piston rod extending through one end thereof, a fluid passage between the ends of said cylinder, means for independently controlling the checking elfect in each direction and means compensating for difference in fluid displacement by movements in opposite directions.

7. The combination in a dumping car, with a dumping car body, of power actuating means, a fluid checking cylinder, piston and by-pass, means for independently controlling the checking ei'ect in each direction and a reservoir communicating with said by-pass.

8. The combination in a dumping car, with a tilting and laterally movable car body, of a power cylinder at one side of the car body and a checking cylinder at the other side of the car body in line therewith, a common piston rod connecting said cylinders, with a piston on each end thereof, a trunnion supporting the car body, and an actuating lever pivoted on the car frame and connecting said piston rod with the trunnion.

9. The combination in a dumping car, witha tilting and laterally movable car body, of a power cylinder at one side of the car body and a checking cylinder atthe other side of the car body in line therewith, a common piston rod connecting said cylinders, with a piston on each end thereof, a trunnion supporting the car body, and an actuating lever pivoted on the car frame and connecting said piston rod with the trunnion, the lateral travel of the piston rod being less than the lateral travel of said trunnion.

10. The combination in a dumping car, with a tilting and bodily movable car body, of a power cylinder and a checking cylinder in axial alinement, a common piston rod connecting said cylinders, with a piston on each end thereof, a trunnion supporting the car body, and an actuating lever pivoted on the car frame and connecting said piston rod with the trunnion.

In testimony whereof I aiix my signature in presence of two witnesses.

CARL P. ASTROM. lVitnesses:

J. S. WoosTEB, GEo. N. KERK.

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