IMPROVEMENTS IN TIP VANS OR WAGGONS
Year: 1881

page_text: PROVISIONAL SPECIFICATION left by Ernest Hora at the Office of the
Commissioners of Patents on the 23rd November 1881.
ERNEST HORA, of 252, Camberwell Road, in the County of Surrey, Van Builder.
"IMPROVEMENTS IN TIP VANS OR WAGGONS."
My Invention relates to improved means of operating tip vans or waggons with
or without springs, and also to effect the automatic opening of the tail-board
simultaneously with the tipping of the van.
The under frame of the van or waggon terminates between the axles of the
front and hind wheels, and its rear end is connected by a hinge joint to the under-
side of the loading body of the van, which tips on the rear axle.
According to one method of effecting the tipping of the loading body of the van
a horizontal shaft is supported in bearings transversely in the under frame, and is
operated by a crank handle from the outside. On the inner end of this shaft is a
bevil wheel gearing with a similar wheel fixed on a shaft placed longitudinally in
bearings on the under frame. On the opposite end of the latter shaft is a third
bevil wheel gearing with a fourth bevil wheel, the axis of which is in a vertical
plane, and which revolves in suitable bearings. The interior of the boss of the
last mentioned wheel is screw threaded, and through it works a screw, the upper
end of which is pivotted to a slide capable of moving along guides on the underside
of the loading body of the van. When the fourth bevil wheel is caused to revolve
the screw rises or falls, and so tips the loading body of the van or waggon, or
brings it back into position after it has been tipped.
- A second method of tipping the van consists in mounting a spur pinion on the
transverse shaft actuated by the crank handle, and causing it to gear with a
segment of a spur wheel fitted to the underside of the loading body of the van.
This spur segment may either be made with external or internal teeth, in which
latter case the transverse shaft would pass through the segment. It will be readily
understood that if more convenient the spur pinion gearing with the segment,
instead of being mounted upon and driven directly by the shaft fitted with the
crank handle, may be driven by suitable intermediate gearing from such shaft.
A third method of effecting the tipping of the van consists in forming or
mounting a worm on the longitudinal shaft driven from the crank handle shaft,

page_text: and causing it to gear with a segment of a worm wheel attached to the underside
of the loading body of the van or waggon.
A ratchet wheel and pawl may be employed so as to arrest the loading body of
the van and support it at any position of its tipping action.
In order to cause the tail-board of the van to be opened simultaneously with the
tipping of the loading body a system of levers is employed. The tail-board is at
each side hung by a lever from a point a certain distance above the top of the rear
end of the van by means of a rod with an eye or fork at its upper end, and fixed
to the rear end of the loading body of the van. The lever extends beyond the
point where it is suspended from the rod, and forms a pivot bearing for a small
cross lover, one end of which is connected by a rod to a spring trap stick engaging
with catches attached to the body of the van, and projecting through slots in
the tail-board. The other end of the small cross lever is connected to one end of a
rod, the other end of which is secured to the under frame of the vehicle. When
the loading body of the van begins to tip, the last mentioned rod actuates the
small cross lever so as to cause the rod at its other end to disengage the spring
trap stick from the catches on the loading body of the van, and the continued
movement of the tipping body will then cause the tail-board to be withdrawn or
opened by swinging on the pivot of the lever connecting it to the rod secured to
the van.
This Invention may also be applied to two-wheeled vehicles by mounting the
crank handle shaft on the shafts of the vehicle, 'the loading body being caused to
tip either on a pivot or on the axle of the wheels.