US1636621A - Power-elevated dumping truck - Google Patents

Description

July 19, 1927. 1,636,621

P. A. BRICK POWER ELEVATED DUMPING TRUCK Filed March 4. 1926 2 Shuts-Sheet 1 lllh,

l atented July 19, 1927.

UNITED STATES PATENT OFFICE.

PERRY A. BRICK, OF GALION, OHIO, ASSIGNORTO THE NATIONAL GRAVE VAULT ('10.,

OF GALION, OHIO A CORPORATON OF OI-IIO.

POWER-ELEVATED DUMPING TRUCK.

' Application filed March 4, 192s.v Serial No. 92,370;

neans being so constructed that the fulcrum upon which the body rocks will shift rearward as the body is tilted thus permitting who rear end of the body to bedisposed farther from the ground than WOUlCl'Ot-llGT- wise be the case, and allowing the hinge point or fulcrum to be located only a short distance back of-the center of the body so that the body is thereby nearly balanced and can be dumped by high speed gearing and a "crank. 1

A further object is to provid'e'a gear sec- 7 iron 14,- slightly to the rear of-the center of the body. Disposed between the irons l1 tor'for the purpose of raising the forward end of the body provided with angularly bent lifting arms in a horizontal position extending forward and then downward and connected by links to the front end of the body thus permitting the" hoisting mechanism to be set relatively close to the front end of the body and permitting the arms and links to be provided of proper length to lift. the'boX to a desired angle without eX- tendingthe lifting arms so far from the gear sector as woulldbe' necessary withstraight" p .by bolt's or clamps of any suitable character,

lifting arms.

A further object in this connection isto provide lifting arms and links so arranged" that a change of leverage is produced-as the body is tilted which makes the load on the hoisting mechanism more nearly uniform at all times. More particularly the object is to secure increased'leverage when the body is started upward from a horizontal position i and when the'load is greatest and reduce this leverage as the body is lifted Other ob'ects will appear in the course of the following description. I

My invention is illustrated in the accomr panying drawings wherein-:

Figure 1 is'a side elevation of a dumping truck constructed in accordance with my invention;

Figure 2 is atop plan view of 'the'suporting structure for the body; (if the Ushaped angle :iron 17 are-the Figure 3 is a section on the line 3-3 of Figure l Figure t 1s a side elevation of a portion of the truck wit the body tilted;

Figure 5 is a side elevation of one of the rockers and its support when the body is in a horizontal position;

Figure 6 is alike View to Figure 5 but showing the rocker tilted;

Figure 7' is a. section on the line 7- 7 of Figure 1.

Referring to these drawings it will be seen that I- have illustrated the chassis A ofan ordinary truck and having longitudinally extending beams a and that I have illustrated an ordinary body designated B. Thisbody is shown as having its bottom I) provided with longitudinally extending angle or channel irons 10 disposed on each side of the body andextending from the front to any desired point,' and with a transverse angle or channel iron 11, slightly forward of the center of the body, and a'transverse angle or channel placed by a conti-nuation of longitudinal irons 10. A short channel iron (or two angle irons) 12' is disposed at the front end of the body and provided with a plurality of openings 13. -Disposed upon the beams a and held thereto by any suitable manner, as

is'the approximately U-shaped member 17 which "rests flat upon the beams a and is held theretoby the clamps 18, this U-shaped frame having an extreme wvidth' greater than the distance between the exterior, faces of the beams'a so as to rest upon the upper edge faces thereof. Extending longitudinallyfrom the U-shapedangle iron 17 are theparallelangleirons 19'which are bolted 'to' the basetlange of the angle iron-17 and connected to a transverse iron 20 which rests upon the upperfaces of the beams a. En-

'-gaged with the ends of this transverse iron 20' are the 'Isupporting irons 21 which are a-ngul'arly bent at their upper ends and upon which the body B rests when the body is turned intoa horizontal position.

Disposed inward and parallel'to the rear v is formed to provide an enlongated loop 32 longitudinally extending irons 22, riveted, iolted or otherwise attached. to the angle iron I? and extendii'ig across the space between the rear ends of the angle iron 17 and the irons 22 are the bolts or pins 23 and 23 Disposed between the angle irons 15 of each pair of angle irons is an approximately segmental casting shown in detail in Figure 6, and designated 24-, and constituting a rocker or fulcrum for supporting the body B. This casting has a plurality of transverse apertures 25 for bolts 26 which pass through certain of the bolt holes 16, and is also formed with an arcuate flange 27 projecting laterally on each side of the medially disposed web 28 of the casing, as shown in Figure 7. The rocker below the casting is formed with a plurality, as for instance three, sockets 29, and 31. The semicylindrical socket 29 or recess is disposed a greater distance from the top of the casting than is the socket 30 and this in turn is disposed a greater distance from the top of the casting than the socket 31 so that as the body is tilted these three sockets will suecessively engage the three bolts or pins 2-3 and 23. This, of course, is equivalent to moving the hinge point rearward as the dumping operation progresses thus keeping the rear end of the dumping body farther from the ground than would otherwise be the case and allowing the hinge point to be located only a very short distance rearward of the center of the body. Thus the body is nearly balanced in its horizontal position and can be readily'dumped with relatively small power.

The middle socket 30 of the rocker casting 7 the rear side wall of which'is slightly. offset as at 32, see Figure 6, and this loop 32 en closes the corresponding bolt or pin 23*. lVhen in a horizontal position this offset portion 32 engages the lower face of the pin 23 and thus acts to limit or prevent any upward movement of the body. When, however, the body is tilted and the rockers are rocked to turn the body from a horizontal position to a tilted position this loop 32 acts as an emergency stop limiting the tilting movement if for any reason the body should .have a tendency to go past its predetermined dumping angle. This, of course, is secured. by the lower end of the loop 32 coming in contact with the pin 23 Obviously when the body is in its horizontal position or in a tilted position the engage ment of-any one of the sockets 29, 30or 31 with the corresponding pins or bolts 23 or 23 prevents any longitudinal movement of the body with relation to the supporting frame. The rockers are supported upon the parallel irons through which the bolts 23 pass, by the flanges 27 so that the pins or bolts 23 do not have to support the load.

The hoisting mechanism comprises the transversely extending shaft 33 provided at one end with the crank handle 3 tby which the shaft may be manipulated. This shaft carries upon it the pinion 35 and the shaft is mounted in bearings in the front ends of the angle irons 19. The pinion 35 meshes with a gear wheel 36 mounted upon a shaft disposed in bearings extending through the riveted or otherwise connected thereto and at their outer ends are angularly bent as at 43 and extend nearly at right angles to the body of the arm. Pivotally'engaged with the angular end 43 of arm 41 are the links 414. which are disposed on each side of the;

arm 43 and extend upward on each side of the channel iron 12 and are bolted thereto by thebolt 45 which may be disposed in either of the openings 13' as desired. The arm 41 is preferably formed of two thicknesses of material riveted to each other but angularly bent at the extremities of the arms as at 46 so as to hold the links suitably separated at their lower ends and to clear the drive shaft of truck chassis.

The shaft 33 carries upon it the ratchet 47 which is disposed adjacent the crank 34 and coacting with this ratchet is the double pawl 48. This pawl 48 is pivoted at 49, has a weighted handle 50 and the oppositely disposed teeth 51 which are adapted to engage between the teeth of the ratchet wheel 4-7 and hold the shaft from rotation in either direction.

By shifting the pawl, from a downwardly and outwardly inclined position in one direction to a downwardly and outwardly inclined position inthe reverse direction the pawl is adapted to prevent rotation of the ratchet wheel in one or the other direction.

'tion much longer links may be used and .tlllS permlts the use of a shorter lifting arm 41 than would otherwise be required, and

. reduces the work to be done by the hoisting mechanism. Furthermore this construction of the lifting arm secures a change of leverage which makes more nearly uniform the load on the hoist as the elevation of the body progresses, This load is greatest at the start and at this time the active length of the lifting arm 41 is only from w to 3 (see Figure 1). As the body is elevated, however, the active lever length is increased until it is equal to the actual length 00 to a, (see Figure 4). This gives the hoisting mechanism a much greater leverage at the start when the load is greatest.

It will be noted that with this construction the rockers may be adjusted toward or from the forward ends of the body and thus cause the body to be shifted forward or rearward relative to the chassis and furthermore that it is an easy matter to remove the rockers in case of breakage and substitute other rockers in place thereof.

The transversely extending bolts 23 and 23 are preferably surrounded by spacing sleeves 51. The lifting unit may be readily removed from the U-shaped member 17 in case of necessity or applied thereto and the lifting mechanism as a whole. including the supporting member 17, may be'readily applied to a truck chassis. I

While I have illustrated certain details of construction and arrangement of parts which I have found to be particularly effective in actual practice, I do not wish to be limit-ed thereto as it is obvious that many changes might be made therein within the scope of the appended claims.

1. A dumping truck including a chassis and a body, oppositely disposed rockers mounted on the body, each having an arouate series of recesses in its under face, and the chassis having a series of members with which said recesses coact and mesh, one of said recesses being approximately elliptical, through which the corresponding member passes to thereby limit the tilting movement of the body and rockers upon the chassis.

2. A dumping truck including a chassis and a body, oppositely disposed rockers mounted on the body, each having an armate series of recesses in its under face, and the chassis having a series of members with which said recesses coact and mesh, one of said recesses being approximately elliptical,

through which the corresponding member passes to thereby limit the tilting movement of the body and rockers upon the chassis, the elliptical opening of each recess being forwardly offset to provide a rounded shoulder adapted to bear against the correspond ing member when the body is in a horizorr tal position to thereby limit upward movement of the body relative to the chassis.

In testimony whereof I 'aifix my signature.

PERRY A. BRICK.

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