Year: 1888

page_text: We ALFRED GEORGE MARGETSON, of the Bristol Wagon Works, Bristol, Engineer,
and WILLIAM STUDLEY HEK, of the same place, Foreman Wheelwright, do herebý
declare the nature of this invention to be as follows:-
Our invention has reference to tip carts, wagons and vans and consists of the means
or mechanism hereinafter described for tipping the body of the cart or vehicle,
For the purpose of our invention we attach to one of the shafts of the vehicle a
transverse spindle to the outer end of which is fixed. a lever while to its other end
which is at or near the centre of the width of the cart is fixed one end of a bar or rod.
This bar or rod is preferably curved so that as the cart is being tipped the curved
part may press up against the bottom and assist the tipping; this bar or'rod may
however be straight. Connected by a loose bolt or stud to the other end of the said
bar or rod is another bar or rod the upper end of which is fixed to the underside of
the cart body near the front. At the side of the shaft is a plate formed with holes to
receive a stud pin for holding the lever above described at any desired position in case.
it is required to retain the cart body when only partly tipped.
When the cart has to be tipped the lever is pulled so as to cause the spindle on
which it is mounted to turn on its axis; this has the effect of moving up that end of
the curved bar to which the other bar which is fixed to the cart body is mounted.
This last named bar is therefore also pushed upwards so as to tip the cart body and
during the first part of the movement the tipping is assisted by the curved part of
the curved bar. By the time the spindle has made about half a revolution the cart is
entirely tipped the lever and the two bars being then in a straight line or approxi-
mately so. The length of the bars should be such that when the vehicle is entirely
tipped the tail does not come in contact with the ground.
In some cases, more particularly for heavy carts or wagons, we duplicate the parts,
that is to say, instead of employing one curved bar and a bar connected to the said
bar and fixed to the body of the vehicle at the centre, we employ two of the curved
bars one at each side of the vehicle and two of the other bars connected respectively
to such bars and fixed to the body of the vehicle.

page_text: Further we combine with the tipping mechanism above described a brake arrange-
ment whereby the brake blocks can be moved into such a position that when the cart
is partly tipped they come in contact with the wheels. This will be found of
advantage in going down hill because by partly tipping the cart not only is the weight
partly taken off the horse but the brakes are applied. The brake arrangement we
employ is composed of two slides or frames which can be moved transversely in
staples or guides on the underside of the cart body at back. These slides carry brake
blocks and when moved outwards the blocks come behind the wheels so that the
part-tipping of the cart will bring them in contact with the tyres. The two slides are
connected together by a crossed chain so that the movement of either of them is
transmitted to the other, both moving outwards together.
: Dated this 26th day of April 1888

page_text: Improvements in Tip Carts, Wagons, and Vans.
We ALFRED GEORGE MARGETSON of the Bristol Wagon Works, Bristol, Engineer,
and WILLIAM STUDLEY HEK of the same place, Foreman Wheelwright 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 :-
Our invention has reference to tip carts, wagons and vans, and consists of the
means or mechanism hereinafter described for tipping the body of the cart or vehicle.
For the purpose of our invention we attach to one of the shafts of the vehicle a
transverse spindle, to the outer end of which is fixed a lever, while to its other end,
which is at or near the centre of the width of the cart is fixed one end of a bar or
rod. This bar or rod is preferably curved so that as the cart is being tipped the
curved part may press up against the bottom and assist the tipping; this bar or rod
may, however, be straight. Connected by a loose bolt or stud to the other end of the
said bar or rod is another bar or rod, the upper end of which is fixed to the underside
of the cart body near the front. At the side of the shaft is a plate formed with holes
to receive a stud pin for holding the lever above described at any desired position in
case it is required to retain the cart body when only partly tipped.
on
When the cart has to be tipped the lever is pulled so as to cause the spindle
which it is mounted to turn on its axis; this has the effect of moving up that end of
the curved bar to which the other bar which is fixed to the cart body is mounted.
This last named bar is therefore also pushed upwards so as to tip the cart body and
during the first part of the movement the tipping is assisted by the curved part of the
curved bar. By the time the spindle has made about half a revolution the cart is
entirely tipped, the lever and the two bars being then in a straight line or approxi-
mately so.
The length of the bars should be such that when the vehicle is entirely
tipped the tail does not come in contact with the ground.
In some cases, more particularly for heavy carts or wagons, we duplicate the parts,
that is to say instead of employing one curved bar and a bar connected to the said.
bar and fixed to the body of the vehicle at the centre we employ two of the curved
bars, one at each side of the vehicle, and two of the other bars connected respectively
to such bars and fixed to the body of the vehicle.
Further we combine with the tipping mechanism above described a brake arrange-
ment. whereby the brake blocks can be moved into such a position that when the cart is
partly tipped they come in contact with the. wheels. This will be found of advan-
tage in going down hill because by partly tipping the cart not only is the weight
partly taken off the horse, but the brakes are applied. The brake arrangement we
employ is composed of two slides or frames which can be moved transversely in
staples or guides on the underside of the cart body at back. These slides carry
brake blocks and when moved outwards the blocks come behind the wheels so that the
part-tipping of the cart will bring thein in contact with the tyres. The two slides are
connected together by a chain so that the movement of either of them is transmitted
to the other, both moving outwards together.

page_text: The accompanying drawings illustrate our invention. Figure 1 is a side elevation
of a two-wheel cart with the improvements applied thereto and shows the cart in the
normal position with the brake off. Figure 2 is a similar elevation but showing the
cart entirely tipped. Figure 3 is also a similar elevation but showing the cart partly
tipped and the brake.on. Figure 4 is a front view of the cart. Figures 5 and 6 are
back views showing the brake off and on respectively.. Figures 5 and 6ª are views
of the underside of the brake slides with their connecting chain and showing the
brake off and on respectively. Figures 7 and 8 are respectively a side view and
a front view of a four-wheel wagon fitted with our tipping arrangement. The same
letters of reference indicate corresponding parts in all the figures.
Referring first to Figures 1 to 6: A is a spindle attached to one of the shafts of the
vehicle. To the outer end of this spindle is fixed a lever B while to its other end is
fixed one end of a curved bar C. D is another rod or bar connected to the other end
of the bar C by a loose bolt and fixed at its opposite end to a block E on the under
side of the cart body. At the side of the shaft is a plate F having holes to receive a
stud or pin for holding the lever B in the desired position. In order to fully tip the
cart it is only necessary to pull the lever from the position shown in Figure 1 to that
shown in Figure 2.; during this movement the 'bars C and D push up the front of
the cart; they are not long enough to allow the tail of the cart to come in contact
with the ground. The brake arrangement is composed of two slides or frames HH
moving in staples or guides JJ JJ on the underside of the cart body at back and
carrying brake blocks K K. The slides H H are connected by a chain L which is
fastened to them at MM; it is an endless chain and passes round rollers NN in
the centre staples JJ, so that when one of the slides H is moved out the other
moves out at the same time. When the slides are not pulled out (see Figures 5 and
5") the blocks K K are not in line with the wheels and therefore the part tipping of the
cart does not bring them in contact with the tyres. When on the other hand they
are pulled out (see Figures 6 and 6") they are in line with the wheels and when the
cart is then partly tipped they come in contact with the tyres.
Referring now to the four wheel wagon represented in Figures, 7 and 8 the parts
forming the tipping gear are duplicated; this being desirable in the case of wagons
or heavy carts. The spindle A extends to both sides of the cart and there are two
curved bars C and two bars D connecting the curved bars with the cart body at-E E.
Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed we declare that what we claim in.
respect of tip carts, wagons and vans is :-.
The arrangement or gear substantially as hereinbefore described whereby a cart'
wagon or, van can be tipped.
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