IMPROVEMENTS IN STREET AND ROAD SWEEPING AND DIRT GATHERING MACHINES to be ass
Year: 1884

page_text: I THOMAS WALKER of Tewkesbury in the County of Gloucester, Engineer do
hereby declare the nature of said invention for "IMPROVEMENTS IN STREET AND
ROAD SWEEPING AND DIRT GATHERING MACHINES to be as follows:-
»
provide a circular rotary brush or brushes made on the spiral or archimedian
screw principle with or without divisions between the brushes, the bearings being
fixed on the frame of the machine but with screws to raise or lower the brush as
required. Behind or in front of the rotary brush I provide a trough to catch the
sweepings or dirt, and in the trough I place two screw worms one right and one
left for the purpose of conveying the dirt to the middle of the trough. In the
middle of the machine I place a chain elevator with buckets made of steel or iron
which carry the dirt up and deliver it into an ordinary cart, waggon or other
vehicle.
At or about the centre of the archimedian brush I provide a straight brush with
an iron plate at top of the fibre or wire so as to make them more firm. This
brush serves to stop the revolving brush from carrying its dirt or sweepings round
with it. I drive the revolving brush with chain gear or other suitable gearing,
also the worms and elevator. The travelling wheels run loose on their axles when
going backward but when going forward they drive the machine by a clutch or
catch in' notches in a box casting fastened on main driving axle and on or in
road or travelling wheels, I provide pawls or dogs with springs suitable to hold
same, so that when machine is going backward the brushes worms and elevators
are stationary thus also allowing the machine to turn curves easily. In front of
machine I place a wheel to carry front of machine or I may place the wheel to one
side working in a joint socket and a straight piece from the swivel goes through an
eye, and on same is cut a screw thread and a wheel or nut works on same so that
the guide or front wheel may be lowered or raised as occasion may require so as
either to bring the machine lower to allow for working or to raise the machine for
travelling. On the left side of machine I may place a worm brush to sweep the
gutter and to throw its dirt in front of the archimedian revolving brush. The

page_text: gutter brush is or may be driven from a shaft running across the machine. The
gutter brush is on the end against frame of machine provided with a round
ball universal joint while the other end is carried by a stay and same is hinged so
that when the brush has swept out the gutter on the left hand driving side it may
be turned and sweep the other side and when both the gutters are swept the brush
is turned up out of the way.
The machine is intended to be jointed or coupled to any ordinary cart by means
of a draw bar or straps and pins. The worm may also be made to work towards
either side of machine and the elevator be placed on either side to take up the
sweepings.

page_text: I THOMAS WALKER of Tewkesbury in the County of Gloucester, Engineer do
hereby declare the nature of said invention for "IMPROVEMENTS IN STREET AND
ROAD SWEEPING AND DIRT GATHERING MACHINES," and in what manner the same
is to be performed to be particularly described and ascertained in and by the
following statement :-
Figure 1 of the accompanying drawings is a side elevation with front carriage
wheel removed, and Figure 2 a plan section of a street and road sweeping machine
constructed according to this invention.
I provide a circular rotary brush A or brushes made on the spiral or archimedian
screw principle with or without divisions between the brushes, the bearings being
fixed on the frame B of the machine but with screws C to raise or lower the brush
as required. Behind or as here shown in front of the rotary brush I provide a
trough D to catch the sweepings or dirt, and in the trough I place two screw or
paddle worms E one right and one left for the purpose of conveying the dirt to the
middle of the trough. In the middle of the machine I place a chain elevator with
buckets Fmade of steel or iron which are attached to an endless chain passing over
sprocket wheels G and H. The buckets F carry the dirt up and deliver it into an
ordinary cart, waggon or other vehicle H'.
At or about the centre of the archimedian brush I provide a straight brush H
with an iron plate H³ at top of the fibre or wire so as to make it more firm. This
brush serves to stop the revolving brush from carrying its dirt or sweepings with
it I drive the revolving brush with chain gear or other suitable gearing from the
road wheel axle and so also the worms or paddles and elevator. I have here
shown the road wheel axle I fitted with a spur wheel K which gears a spur wheel L
on the shaft of the lower sprocket wheel G on which shaft the two screw or paddle
worms are also fixed. The revolving brush A is driven by endless chain M passing
over & sprocket wheel N on the revolving brush shaft and a sprocket wheel O on
the road wheel axle. The travelling wheels run loosely on their axles when going
backward but when going forward they drive the machine by a clutch or catch in
notches. Qis a pawl wheel in a box casting fastened on main driving axle and on
or in road or travelling wheels I provide pawls or dogs R with springs suitable to
hold same, so that when machine is going backward the brushes, worms and
elevators are stationary thus also allowing the machine to turn curves easily,
In rear of machine I place a wheel S to carry rear of machine (or I may place
the wheel on one side) working in a joint socket T and a straight piece T¹ from the
swivel goes through an eye and on same is cut a screw thread and a wheel or nut
works on same so that the guide or front wheel may be lowered or raised as
occasion may require so as either to bring the machine lower to allow for working
or to raise the machine for travelling. On the left side of machine (but in fig. 2
inadvertently drawn on the right side of machine) I may place a worm brush Ŭ to
sweep the gutter and to throw its dirt up against the archimedian revolving brush.
The gutter brush U is or may be driven from a shaft Y running across the machine.

page_text: The gutter brush is on the end against frame of machine provided with a ball or
universal joint U while the other end is carried by a stay and same is hinged so
that when the brush has swept out the gutter on the left hand driving side the
machine may be turned and sweep the other side and when both the gutters are
swept the brush is turned up out of the way.
The machine is intended to be jointed or coupled to any ordinary cart by means
of a draw bar or straps and pins. The worm or paddles may also be made to work
towards either side of machine and the elevator be placed on either side to take up
the sweepings.
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
First: In a street and road sweeping machine, the combination of a revolving
brush, a stationary brush for sweeping the dirt off it; a trough into which the dirt
is swept, a right and left hand worm or paddles for conveying the dirt to the
middle of the trough (or a worm or paddles for conveying the dirt to one side of
the trough) and a bucket elevator for raising the dirt and delivering it from the
trough into a cart or other receptacle.
Second: The road and street sweeping machine having its parts arranged and
combined as shown in the drawings.