IMPROVEMENTS IN SPRING TIP VANS
Year: 1879

page_text: LETTERS PATENT to John Watling, of Letts Wharf, Commercial Road,
Lambeth, for the Invention of "IMPROVEMENTS IN SPRING TIP VANS."
PROVISIONAL SPECIFICATION left by the said John Watling at the Office
of the Commissioners of Patents on the 16th July 1879.
JOHN WATLING, of Letts Wharf, Commercial Road, Lambeth.
IN SPRING TIP VANS."
"IMPROVEMENTS
This Invention relates to the construction of tip vans or waggons, by which
means vans or waggons may be made to tip their loads with the same facility as at
present obtains in the case of two wheeled tip carts.
For this purpose the tip van or waggon consists of two main parts, the one being
the horizontal under frame borne by the wheels, either through the medium of
springs or otherwise, the other being the upper body which holds the load. To the
upper surface of the under frame I fit so as to revolve freely within suitable
bearings any desired number of friction rollers having their axes at right angles to
the length of such frame. The friction rollers may each extend right across the
underframe, or instead of this arrangement there may be shorter friction rollers at
either side of the said frame. The friction rollers are fitted so that their peripheries
project a little above the upper surface of the underframe. Upon the underframe
thus fitted is laid the upper body of the van or waggon so as to slide freely backward
and forward on the friction rollers. A pin or pivot which I will call pin 1 is fitted
on each side of the van or waggon to the outside of the under frame so as to project
outwards therefrom, a somewhat similar pin, which I will call pin 2, being fitted at
each side to the lower part of the superincumbent body, the two sets of pins (and
thereby the two parts) being connected by means of a slotted link or lever, one end
of which turns or oscillates on one of the pins, whilst the slotted portion may slide
on the other pin. In addition to the pin beforementioned projecting from each side
of the body of the van or waggon, another similar projecting pin or pivot, which I

page_text: will call pin 3, is provided in the same horizontal plane and nearer the back end of
the van or waggon, the underframe being provided on each side at the back end
with bearings or recesses in which, when the body is.run_back-on-the-friction-rollers,
the pin 3-is stopped, and pivots or oscillates in the bearings or recesses on the van
-or-waggon-being-tipped, at which time the pins 1 and 2 and slotted levers or links
operate automatically to prevent the van or waggon tipping up beyond a certain
inclined plane...
Instead of the slotted levers or links before described modifications of the same
_may_be_employed, as, for instance; the-lever may be made with a solid end to slide
in a parallel groove or slot, or other kinds of mechanism for controlling the angle
of tip may be employed.
Any suitable catch to operate automatically or otherwise may be employed to
keep the body and underframe together in a fixed and normal position, and prevent
sliding of the upper body on the friction rollers.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Watling in the Great Seal Patent Office on the 16th January
1880.
JOHN WATLING, of Letts Wharf, Commercial Road, Lambeth.
IN SPRING TIP VANS."
"IMPROVEMENTS
This Invention relates to the construction of tip vans or waggons by which
means vans or waggons may be made to tip their loads with the same facility as
at present obtains in the case of two wheeled tip carts.
For this purpose the tip van or waggon consists of two main parts, the one being the
horizontal under frame A borne by the wheels, either through the medium of springs
or otherwise, the other being the upper body which holds the load B. To the
upper surface of the underframe A, I fit so as to revolve freely within suitable
bearings any desired number of friction rollers C having their axes at right angles
to the length of such frame. The friction rollers may each extend right across the
under frame, or instead of this arrangement there may be shorter friction rollers at
either side of the said frame. The friction rollers are fitted so that their peripheries
project a little above the upper surface of the under frame. Upon the under frame
thus fitted is laid the upper body of the van or waggon so as to slide freely back-
ward and forward on the friction rollers.
A pin or pivot D, Figure 1, is fitted in any suitable manner on each side of the
van or waggon to the outside of the under frame so as to project outwards there-
from, a somewhat similar pin E being fitted at each side to the lowest part of the
superincumbent body, the two sets of pins D and E being connected by means of a
slotted link or lever F, one end of which turns or oscillates in the pin E whilst the
slotted portion may slide in the other pin D. In addition to the pin D projecting
from each side of the body of the van or waggon another similar projecting pin or
pivot G is provided in the same horizontal plane and nearer the back end of the
van or waggon. The underframe is provided (on each side) at the back end with
bearings or recesses H which, when the body is run back on the friction rollers, the
pin G is stopped, and so pivots or oscillates in the bearing or recesses H on the van
or waggon being tipped, at which times the pins D and G and the slotted levers or
links Foperate automatically to prevent the van or waggon tipping up beyond a
certain inclined plane.
Instead of the slotted levers or links before described modifications of the
mechanism for tilting the van or waggon may be employed which I consider
to be preferable, that is, to do away with the before mentioned levers or
links on the outer sides of the before mentioned horizontal under frame A,
Figure 2, I bolt or otherwise a metal parallel slot or groove guard I of any
suitable length, such slot or groove guard to project upwards to the frame of
the superincumbent body of the van or waggon; on each side of this frame I fix a
pivot or pin J to project through and to slide into the said metal slot or groove
guard. On the van or waggon being pushed back for the purpose of tilting the
same, the pivots or pins J slide to the end of the slot or groove guard to turn or
oscillate.
Any suitable catch to operate automatically or otherwise may be employed to
keep the body and underframe together in a fixed and normal position and prevent
the sliding of the upper body in the friction rollers.
Having now described and ascertained the nature of my Invention, and the
manner in which the same is or may be performed, I would observe in conclusion
that I do not limit myself to the precise details herein given and shown in the
accompanying Drawings, as various modifications may be made therein while
retaining the essential features of my Invention, but what I claim as new and

page_text: desire to be secured to me by the herein before in part recited Letters Patent
is,-
First-The-application of a four or two wheeled van or waggon to act as a tip
van or waggon, with the slotted links or levers with parts hereinbefore described
-and-illustrated by Figure 1 and letters A, B, C, D, E, F, G, and H, or any modifica-
tion-thereof.
Second. The application of a tip van or waggon on two or four wheels by means
of the side slot or groove guards with parts herein before described-and-illustrated-
"by Figure 2, and letters A, B, C, I, and J, or any modification thereof.
In witness whereof, I, the said John Watling, have hereunto set my hand and
seal, this Fifteenth day of January, in the year of our Lord One thousand
eight hundred and eighty.
TATT