US1438248A - Wagon dump - Google Patents

Description

F. W. LEHRACK.

WAGON DUMP. 'IhPPuc'Anon FILED MAR; 21. I92l.

1,43 ,24 1 .Patented Dec.12,1922.

Patented Dec. 12, 1922.

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FREDERICK W. LIEHRACK, KANSAS IMPLEMENT COMPANY, OF KEWANEE,

WAGON DUMP.

Application filed March 3, 1921. Serial No. 449,450.

To all whom it may concern:

Be it known that I, FREDERICK W. LEH- RACK, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Wagon Dumps; and I do declare the following to be a full, clear, and exact,-description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to vehicle dumps and particularly to an elevator for raising one end of a vehicle so as to incline the body portion thereof whereby the contents may be dumped therefrom.

The invention consists in certain novel parts and ombinations of parts, all of which will be described hereinafter, particular attention being directed to the elevating platform which also serves as a chock or retaining means to prevent longitudinal movement of the vehicle when one end of it is being raised to incline the body portion.

In the drawings,

Pg. 1 is a perspective view of a vehicle elevating means applied.

Fig. 2 is a sectional view through the same in its non-functional position, and

Fig. 3 is a view showing the position of the platform after the chock or guard has begun to move.

Referring now to the drawings by numerals of reference:

1 designates amain or stationary platform which consists of standards 2, 3, 4 and 5 connected by side braces 6-6 and 7-7 and end braces 8-8 and 9-9 whereby a rectangular frame is provided. The standards or uprights 2, 3, 4 and 5 are in the forms of angles and constitute guides for the vertical bars 10, 11, 12 and 13, fastened at their upper ends to a rectangular guard frame 14, having a lateral peripheral flange 15, as shown in Fig. 1.

The upright guides 10, 11, 12 and 13 are also angles which slide in the guides 2, 3, 4 and 5. The angles 10 and 11 carry cross bars 16 and a corresponding cross bar 16' is carried by the angles 12 and 13. The cross bars or angles 16 and 16' carry parallel angles 17 and 17' as shown.

support parallel shafts 18 and 19 and complementary shafts 20 and 21 are supported on the cross bars 9-9. The shaft 18 carries sprockets 22 near its respective ends which align with sprockets 23 near the respective ends of the shaft 20. Corresponding sprockets 24 are carried by the shaft 19 and align with complementary sprockets 25 on the shaft 21. The sprockets 22 and 23 are engaged by a chain 26 which 18 fastened to the bar 17. On sprockets 24 and 25 is a chain 27 fastened to the bar17'. These two chains are fastened together by a connection 28 so that they must move in unison. A chain 29 passes around sprockets 22 and 23 on the end of the shaft 20 oppos1te to the chain 26. It has a complementary chain 30 which passes around the sprockets 24 and 25 on the end of the shaft 19, opposite to the chain 27.

The chains 29 and 30 are fastened together by fastening connections (not shown) similar to 28 and chains 29 and 30 are fastened to the bars 17 and 17 respectively so that theyserve as equalizers to exert equal pull on all of the bars 10, 11, 12 and 13.

Beneath the frame 14 is a channel 31 connected to a piston rod 32, on one end of which is fastened a piston and a hydraulic cylinder 33 so that the piston rod 32 can be raised to raise the frame 14 vertically with respect to the frame 1.

The cross bars 8-8 The frame 14 is provided with an in- Q wardly projecting flange 34, surrounding a central rectangular opening 35. The flange 34 supports a movable platform 36 which may be normally held above the flange 34 and level with the flange 15 by the upstanding pins 37 on the channels 38 and 39. carried by the main frame 1 and shown as sup ported by the bars 7-7.

When the device is in its normal position, the flange 15 will be substantially level with the floor 40, which supports the vehicle 41, the platform 36 being supported in line with the -floor 40 and the flange 15 by the upstanding pins 37. The vehicle 41 may then move thereon so that the front wheels may rest on the platform 36. Then power will be generated within the hydraulic cylinder 33 to raise the piston rod 32 and with it, the frame 14 and its guide or supporting members 10, 11, 12 and 13. I

The initial movement of the frame 14 will be independent of the platform 36, the frame 14 continuing to rise until the flange 34 comes in contact with the bottom face of the platform 36 so that the front wheels 42 of the vehicle will be received in the recess 43 or Within the frame 14. Then the platform 36 will continue to rise with the frame 14 so that the front portion of the vehicle will be raised and the body inclined into dumping position, as shown.

It will be apparent that on account of the geared connections, the lift Will be equalized throughout the frame 14 and its supports and that the movable platform 36 will so function that the front wheels of the vehicle will be received within the frame 14 which serves as a shock or retarding means for preventing longitudinal movement of the vehicle as it is being raised. when the vehicle has been dumped, the piston rod 32 may be permitted to recede within the cylinder 33 to lower the frame 14 so that the flange 15 will be in line with the floor 40.

As it recedes to its lowermost position, the platform 36 will rest upon the upstanding pins on support 37 which are substantially in line with the floor that is, immediately below it. Therefore, the top surface of the platform 36 will be in line with the top flange 15 and with the surface of the floor 40, permitting the vehicle to be moved away from the elevator or dumping'device.

From the'foregoing it will be apparent that the device is simple in operation, inexpensive to manufacture and that it will automatically retain the motor vehicle against longitudinal movement as it moves into functioning position and automatically release the motor vehicle for longitudinal movement when it goes out of functional position.

What I claim and desire to secure by Letters Patent is:

1. A wagon dumping device comprising a platform, a vertically movable platform frame having limited vertical movement with respect to the platform whereby vertical movement of the frame in an upward direction will cause a portion :of it to raise above the platform before the platform is raised, and means for supporting the platform even with the top of the frame when the frame is in its lowered position.

2. A wagon dumping device comprising a platform, a vertically movable platform frame having an inwardly projecting platform supporting flange, means for normally holding the platform off the flange and maintaining it substantially level with the top of the frame, and means for raising the frame so that the flange will raise the platform during its upward travel to support the platform below the top of the frame.

3. In a wagon dumping device, a platformto receive the end of a vehicle, a platform lifting frame having side walls extensible above the perimeter of the platform, and means for raising the frame.

4. In a wagon dumping device, a platform to receive the end of a'vehicle, a platform lifting frame having side walls extensible above the perimeter of the platform, means for raising the frame, and means for equalizing the lifting force over all four sides of the frame.

In testimony whereof I aflix my signature.

FREDERICK W. LEHRACK.

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