Improvements in Dumping Vehicles.
Year: 1899

page_text: Date of Application, 30th May, 1899-Accepted, 1st July, 1899
COMPLETE SPECIFICATION.
Improvements in Dumping Vehicles.
I, THOMAS HILL, of No. 7, Mercer Street, in the City of Jersey, in the County
of Hudson and State of New Jersey, United States of America, Manufacturer,
do hereby declare the nature of this invention, and in what manner the same is
to be performed, to be particularly described and ascertained, in and by the
following statement:-
--
This invention relates to improvements in dumping vehicles of either the four-
wheeled type, the two-wheeled type for carrying material in bulk, or the platform
type for carrying lumber, bar iron or the like. The object of the invention is
to provide a new and simple device to prevent the usual sudden blow ordinarily
received by the body of the vehicle when it comes in contact with the ground
during the operation of dumping, and which is caused by the body rolling and
sliding over the curved portion of the wagon frame. To accomplish this
object I provide a compensating curved upper bearing partially overhanging the
lower curved bearing upon the vehicle frame, and a rolling shaft attached to the
body, the ends of the shaft being adapted to revolve or slide in the upwardly
curved bearings overhanging the downwardly curved bearings of the frame, so
that while the body is in the act of dumping and changing its center of gravity
on the lower curved portion of the frame, it will travel up the overhanging por-
tion above and prevent the possibility of the body sliding on the lower curved
portion of the frame and striking the ground with a sudden jar.
I will describe a dumping vehicle embodying my invention, and then point
out the novel features in the appended claims.
Reference is to be had to the accompanying drawings forming a part of this
specification, in which similar characters of reference indicate corresponding
parts in all the views.
Figure 1 is a side elevation of a dumping vehicle of the four-wheeled type,
embodying my invention;
Figure 2 is a side elevation of a modification;
Figure 3 is a similar view of another modification;
Figure 4 is a perspective view of a compensating bearing employed;
Figure 4 is a perspective view showing a modified form of compensating
bearing;
Figure 5 is a longitudinal section of a frame bar and bearing illustrated in
Figure 2, and also showing the spring in side elevation;
Figure 6 is a sectional view on the line 6-6 of Figure 5;
Figure 7 is a side elevation of a modified form of my invention, as applied to
a cart having a body with a straight rear end;
Figure 8 is a view similar to Figure 7, but showing the body of the cart with
an inclined rear end;
Figure 9 is a plan view of a body-locking and sliding device employed;
Figure 10 is a sectional side elevation thereof; and
Figure 11 is a horizontal section on the line 11-11 of Figure 10.

page_text: Referring to the example of my improvement shown in Figure 1, 1 designates
one of the side bars of the gearing frame, having its rear end attached to the rear
axle 2, and having the upper portion of its rear end curved downward as indi-
cated by the dotted line 3. Attached to the outer side of each side bar at its
rear end is the compensating bearing, consisting of a casting having a plate
portion 4, secured to the side bar, and having a portion 5 extended above the
plane of the curve 3 of the bar. This casting has an offset 6, which extends
outward and is provided with a horizontally disposed guide slot 7 and an
upwardly and rearwardly inclined guide slot 8. This guide slot 7 may extend
entirely through the casting, as indicated in Figure 4*, or it may be closed at its
outer end, as indicated in Figure 4, to prevent any possible entrance of dirt.
It will be noted that the guide slots 7 and 8 join, and that the junction of the
two slots is considerably forward of the axle 2, and that the upper end of the
slot 8 is substantially in a vertical line with said axle.
The body 9 has laterally projecting trunnions adapted to move in the slots in
the castings. I have here shown a rod 10 mounted to rotate in stirrups 11
secured to the bottom of the body. It is to be understood, however, that trun-
nions may be rigidly attached to the body and projected into the slots, without
departing from the spirit of my invention.
In operation, the body 9 is first to be moved rearward to the position sub-
stantially indicated by the dotted line a. This will bring the trunnions to the
junction of the slots 7 and 8; and at this time the body will be tilted downward,
the trunnions moving upward in the slots 8, and the body rocking on the curved
upper surface 3 of the side bars. As the end of the body reaches the ground,
the trunnions will simultaneously engage with the end walls of the slot 8, and
therefore prevent any sudden jar or hard pounding of the body upon the ground.
In Figures 2 and 5, I have shown the side bars of the frame as made in the
form of hollow castings 12; having at the forward portion and at the underside,
lugs 13 between which the cross bars 14 mounted on the platform 15 are secured.
The rear upper end of each hollow casting or side bar 12 is curved downward, as
at 16, and formed integral with this casting or side bar is an offset 17, having
a horizontally disposed guide slot 18, and the upwardly and rearwardly curved
guide slot 19. These slots have the same relation to the rear axle as in the con-
struction first described, and the trunnions move therein in the same manner.
In this example I employ a spring connection between the axle 2 and the
hollow castings or side bars of the frame. Each spring 20 is made up of several
leaves which are secured in the rear portion of the castings, these portions of
the castings being open at the bottom to receive the springs. The top of the
upper leaf of each spring engages with a block 21, arranged between it and the
top wall of the casting, and the spring is held in place by means of loop bolts 22,
having their respective upwardly extended threaded ends passed through
lugs 23, 24, formed on the casting and engaged above said lugs by nuts 25. The
1ear portion of the spring 20 is curved downward and is mounted to slide upon
the upper side of the axle 2, and the said rear end has a swinging connection
relatively to the casting. As here shown, this swinging connection consists of
links 26 pivoted to the casting, and through which a bolt 27 extends, the said
bolt being also extended through an eye 28 formed at the end of the lower leaf of
the spring.
In Figure 3, I have shown the body 29 as provided with an upwardly and rear-
wardly inclined rear end; and in this instance the casting 30 is attached to the
rear curved end of each side bar 1, as in the first example described; however,
the horizontally disposed guide slot 7 is omitted, the said guide slot being
unnecessary because the body has no longitudinal sliding movement. The ver-
tically and rearwardly inclined slot 31, however, is arranged in an offset 32, and
has its lower portion forward of the axle 2.
In Figures 7 and 8, I have shown two-wheeled vehicles or carts, the rear
portions of the shafts forming the frame thereof, the rear ends of these shafts 33

page_text: being curved downward as at 34. In these examples, castings 35 are secured to
the side bars or shafts, and each casting has an offset 36, which is curved upward
and rearward and is provided with a guide slot to receive the trunnions extended
from the body of the vehicle. In these examples, after releasing the front por-
tion of the body from the frame, the body will tilt downward, as
indicated by dotted lines, and while SO tilting, will rock on
the
curved portions 34, but will be prevented (from sliding thereon by the guides;
also it is obvious that the fulcrum point on said curved surfaces 34 will be con-
stantly changed during the dumping action.
I will now describe a simple means by which the longitudinally movable bodies
may be easily moved. This means consists of a rack bar 37, mounted to slide in
a casing 38 secured to a platform on the front portion of the vehicle frame.
Extended from one of the side pieces of the casing 38 are cheek pieces 39, 40,
between which a segment gear 41 is mounted to rotate. This segment gear is
designed to have its teeth project through an opening in the side wall of the
casing, and engage with the teeth of the rack 37. This segment gear is mounted
to oscillate on a bolt or pin 42, and also mounted to move on this bolt or pin 42
is an outwardly extended lever 43, and pivotally connected to the lever 43 is a
dog consisting of two divergent arms 44, 45, adapted to be placed in engagement
with shoulders 46, 47, 48 and 49. At its inner end the rack bar 37 has an
upwardly extended hook portion 50 adapted to engage in a keeper 51, attached to
the front end of the vehicle body.
:
After
In operation, when it is desired to move the vehicle body rearward, the
section 45 of the dog is to be placed in engagement with the shoulder 48; then
by shifting the lever in the direction of the arrow a shown in Figure 9, the rack
bar 37 will be moved a distance, and consequently the vehicle body will be moved
the same distance, which may be about one-half the desired movement.
moving it thus far, the lever is to be moved back and the section 45 of the dog
engaged with the shoulder 49, and then the lever is to be again moved in the
direction of the arrow, when the body will be moved to its extreme rearward
position that is, with its trunnions at the junction of the guide slots 7 and 8.
As during the rearward movement of the body, and as the forwardly extended
portion of the hook 50 is somewhat shorter than is the opening through the
keeper 51, the body may be tilted to dump the load as the keeper 51 will move
over the hook. After dumping the load, the vehicle body is to be turned back
to its horizontal position, and then the gear 41 is to be rotated in the direction
opposite to that before described, with the section 44 of the dog engaged first
with the shoulder 46 and then with the shoulder 47. This will draw the body
forward and engage the hook with the keeper 51, and prevent the accidental tilt-
ing of the body. By this shifting mechanism, it is obvious that but a very
slight power will be required to move the body of the vehicle to either of its
positions.
It will be seen that by my invention, in connecting the body with a frame,
there will be an upward and downward rolling movement of the body both at the
same time; it will also be seen that in the act of dumping, the greater portion
of the weight of the load is on the upper curved bearing forward of the axle of
the vehicle until the load is finally dumped; therefore the upwardly and rear-
wardly curved guide forms a definite compensating balance, so that after dump-
ing a load, the body may be returned to its normal carrying position by the
expenditure of very little, if any power of the operator.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is—
1. In a dumping vehicle, a frame having its side portions curved downward at
the rear end of the upper side, offsets from said rear portions provided with
upwardly and rearwardly inclined guide slots, the said guide slots being forward

page_text: of the axle, to which the frame is attached, and trunnions extended from the
vehicle body into said guide slots, substantially as specified.
2. In a dumping vehicle, a frame comprising side bars curved downward at
the upper sides of the rear end, an offset extended from each side bar, the said
offset having a horizontally disposed guide slot and an upwardly and rearwardly
disposed guide slot forming a junction with the first named guide slot, the said
guide slots being forward of the axle, a dumping body, and trunnions extended
from said body and adapted to move in the guide slots, substantially as specified.
3. In a dumping vehicle, a frame comprising side bars, each consisting of a
hollow casting having its rear end curved downward at the upper side, an offset
formed on said casting near its rear end, the said offset having a horizontally
disposed guide slot and an upwardly and rearwardly curved guide slot, a body,
trunnions on the body adapted to move in the guide slots, a spring arranged in
each side bar or hollow casting and mounted to slide on the axle of the vehicle,
and link connections between the casting and the rear ends of the spring, sub-
stantially as specified.
4. In a dumping vehicle, a frame side bar consisting of a hollow casting, an
offset on said casting provided with a guide slot, the said casting being curved
on its upper side rearward of the offset, a leaf spring seated in the hollow casting,
loop bolts engaging said spring and passing through lugs formed on the casting
and secured by nuts, and link connections between the rear end of the spring and
the casting, substantially as specified.
5. In a dumping vehicle, a frame side bar curved downward at its rear end,
and an offset on the side bar forward of said curved portion, the said offset
being provided with a curved guide slot closed at its outer side, substantially as
specified.
6. In a dumping vehicle, a frame side bar consisting of a hollow casting curved
downward at its rear end, an offset on said casting forward of its curved portion,
said offset being provided with a curved guide slot, a spring secured to the said
casting, and lugs extended downward from the forward portion of the casting,
substantially as specified.
7. A device for moving the body of a dumping vehicle, comprising a longitu-
dinally movable rack bar having a pin to engage with a keeper on the body, a
segment gear engaging with said rack, a lever mounted to swing on the pivot
of the gear, and a dog pivoted to the lever and having divergent members for
engaging with shoulders formed on the gear, substantially as specified.
8. A device for moving the body of a dumping vehicle, comprising a rack bar
having a pin to engage with a keeper on the body of the vehicle, a casing in
which said rack bar is mounted to move, a segment gear having its teeth engag-
ing with the rack bar, a lever mounted to swing on the pivot of the gear, and a
dog pivoted to said lever and having two divergent members to engage with
shoulders formed on the gear, substantially as specified.
Dated
unis 12th day of May 1899.
THOMAS HILL.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.