Improvements in Dump Carts.
Year: 1891

page_text: Date of Application, 15th Dec., 1891-Accepted, 16th Jan., 1892
COMPLETE SPECIFICATION.
Improvements in Dump Carts.
I, ANDREW HERRMANCE SMITH, of 22 East 42nd Street, in the City, County
and State of New York, United States of America, Physician, 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:-
Carts have heretofore been made in which the central portion of the axle is
depressed as a crank, in order that the body of the cart may be comparatively near
the ground, so that the material placed in such body may not have to be clevated
unnecessarily high.
My present invention is especially adapted to dump carts that receive strect
sweepings, but it may be used for other purposes. I make use of a crank or drop
axle to which a lever is connected and the axle is pivoted to the body of the cart,
and there is a suspending device parallel or nearly so to the crank of the axle, so
that the axle and the suspending device may swing together as the axle is rotated
by the lever in raising the body of the cart into a position sufficiently high for
dumping the contents.
In the drawing
Figure 1, is a side view with the near wheel removed:
Fi
:
Figure 2, is a rear elevation of the wagon and
Figure 3 is a front view of the same.
The wheels A are of suitable size and character and the axle B is depressed in
the middle, or made crank shaped, so that the body C, is between the two crank
portions of the axle. This body C, is to be of any desired size or character.
Usually the tail board 2, is pivoted at 3, and provided with a cross lever 4, engaging
the latches 5, for holding the tail board in a closed position, and by moving this
cross lever 4, it is separated from the stationary latches 5, so that the tail board
swings open for the discharge of the contents of the body.
The body C, is connected to the axle B pivotally by suitable bearings or boxes 6,
upon the bottom of the body, so that the body is free to be turned in relation to
the axle, and the axle also may be swung as a crank upon the wheels, the hubs of
which form the pivots for the axle; and in order to swing this axle B a lever D
is provided extending upwardly from the axle at one side, and adjacent to one of
the wheels A.
The thills E or shafts are of suitable size and character adapted to receive the
horse, or to be connected to a street sweeping machine so as to be drawn behind
the said machine, and receives the sweepings and upon the rear portions of these
thills there are bearings or boxes 7, connecting them to the axle B adjacent to the
wheels, and there is also an upward extension at E' behind and above the axle for
the reception of the chain wheel sheave F over which passes a rope or chain G,
that is connected at its rear end to the cart body C, by a stud or projection 8, and
the position of the chain wheel and stud are such, that the length of the chain or
rope G, from the chain wheel F to the stud 8 corresponds to the radius of the crank
axle or nearly so, and such crank axle, and this portion of the rope or chain are
parallel or nearly so.
The forward end of the rope or chain G, may be acted upon by any suitable
means. I have represented a small winch H, with a pawl 9, and crank handle 10,
by which this rope or chain G, can be drawn in or let out with convenience; and
the lever D may be actuated by hand, in cases where the contents of the body C,
are not too heavy, but I have represented a rope or chain I, extending from near
the upper end of the lever D to a winch K, having a pawl 12, and a square shaft

page_text: for the crank handle for winding up or letting out the rope or chain I and there is
preferably a stud or projection L, from the side of the box or body C, resting upon
one of the thills E when, the body of the.cart is in its normal position.
It will now be understood that when the cart is in the position indicated by the
full lines Fig. 1, the street.sweepings or other materials may be thrown or deposited
in the cart body as usual,, and the, cart. body itself is as low down as desired,
according to the length of the axle crauks, hence the materials do not require to be
elevated unnecessarily high.
After the contents have been placed in the cart body, and it is desired to dump
the same the lever D, is drawn forward and the cart body elevated by swinging the
axle cranks upwardly to a greater or less extent according to the place where the
dumping is effected, and in doing this the portion of the rope or chain G, between
the wheel or sheave and the stud 8; describes a similar arc of a circle to that of
the crank axle and the cart body is maintained in a nearly level position while being
elevated, and it is to be understood that the preponderance of weight will be
towards the back, so as to prevent the body tipping forward, and when the body is
sufficiently elevated the tail board is to be unlatched and the winch H, operated to
lower the rear of the cart body and allow the contents of the body to dump, such
body swinging upon the bearings 6, after which the parts are restored to their
normal position with facility.
It will be apparent that the lever D, might be swung backwardly to throw the
crank of the axle forward, if the other parts of the cart were arranged to allow of
this movement. It will also be apparent that a roller or a notched bearing, may
take the place of the chain wheel or sheave F, and a metal bar might be employed as
a connection for the rope or chain G, between the wheel or bearing and the
stud 8. If this bearing or wheel was placed forward of the axle as indicated by
dotted lines in Fig. 1, the same operation would be performed but in that case the
weight in the cart body should be principally forward of the axle.
A segment of a wheel on the cranked axle might be used as the equivalent of a
lever; to give motion to the cranked axle, such device being acted upon by a pinion,
a worm, or other suitable mechanism..
Having, now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, declare that what I
claim is-
1. The combination with the thills, wheels and cranked axle, of the cart body,
above and pivotally connected to the crauk of the axle, mechanism for turning the
cranked axle in the wheel hubs and raising the body of the cart and a connecting
device between the thills and body of the cart and parallel or nearly so. to the
crank axle, for keeping the body level or nearly so as it is raised bodily substantially
as and for the purposes set forth.
2. The combination with the wheels and cranked axle, of a cart body above and
pivotally connected to the crank of the axle, mechanism for turning the cranked
axle in the wheel hubs to elevate the body previous to tipping the same to discharge
the contents substantially as set forth.
3. The combination with the wheels and cranked axle, of a cart body above and
pivotally connected to the crank. of the axle, mechanism for swinging the axle to
elevate the cart body, a chain or rope connected at one end to the cart body and a
bearing connected with the thills or shaft and over which such chain or rope passes,
for holding the body in position while being clevated and then dumping the contents
by slackening the chain substantially as set forth.
F W. BARKER,,
Applicant's. Agent.