Improvements in or connected with Road Rollers, or other Engines or Vehicles Provided with Wheels or Rollers
Year: 1895

page_text: Date of Application, 8th Mar., 1895
Complete Specification Left, 9th Dec., 1895-Accepted, 11th Jan., 1896
PROVISIONAL SPECIFICATION.
Improvements in or connected with Road Rollers, or other Engines
or Vehicles Provided with Wheels or Rollers.
1, JAMES MARSHALL of Britannia Works Gainsborough in the County of
Lincoln, Engineer do hereby declare the nature of my invention to be as
follows:-
One of the objects of my invention is to provide means whereby the tyres or
rims of rollers or wheels used in road rollers or other engines, or vehicles, provided
with wheels or rollers can be readily attached and detached from the other parts of
the roller or wheel and replaced by new ones as required without interference with
the other parts. According to my invention I provide on the inner circumference
of the tyre or rim of the roller or wheel two inwardly projecting flanges to
which the spokes are alternately secured. One of the said flanges projects further
inwards than does the other and the ends of the spokes secured thereto are of so
much less length than the spokes secured to the flange which projects to the lesser
extent inwards therefore the spokes secured to the flange which projects to the
greater extent inwards will pass clear of the flange which projects to the lesser
extent inwards. The outer ends of the spokes are supported in rebates formed at
the side of the flanges for this purpose so that on removing the bolts or fastenings
which secure the spokes to the flanges the whole of the tyre or rim of the roller
or wheel can be drawn off and replaced. The tyre or rim may be made of cast
iron or steel or it may be built up of wrought iron with internal tee irons to form
the said flanges. Another object of my invention is to provide means whereby the
scrapers employed in connection with the rollers or wheels are rendered flexible
or capable of yielding in either direction so that should anything adhere to the
rollers or wheels which the scrapers cannot remove the said scrapers will yield to
pass the obstruction and afterwards return to their normal position. To effect this
I secure the scraper blade to one of the ends of arms or levers the other ends of
each of the said levers being provided with grooves engaging with a double fulcrum
and connected by a cross bar with which (or with each of the said arms or levers)
a spring or springs is or are connected so as to hold the levers normally in contact
with the said double fulcrum. The arrangement is supported by a bracket or
pillar projecting from the engine or vehicle to support the scraper normally in
proper position relatively to the roller or wheel. When an obstruction is met by
the scraper which it cannot remove the arms or levers which carry the scraper
will overcome the power of the spring or springs and turn upon one or the other
member of the double fulcrum according to the direction in which the roller or
wheel is travelling and the spring or springs will when the obstruction is passed,
return the scraper to its uormal position.
Dated this 8th day of March 1895
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.

page_text: Improvements in or connected with Road Rollers, or other Engines
or Vehicles Provided with Wheels or Rollers.
I, JAMES MARSHALL, of Britannia Iron Works, Gainsborough, in the County
of Lincoln, Engineer, 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 :-
The
One of the objects of my invention is to provide means whereby the tyres, or
rims, of rollers, or wheels, used in road rollers, or other engines, or vehicles,
provided with wheels, or rollers, can be readily attached to, and detached from,
the other parts of the roller, or wheel, and replaced by new ones, as required,
without interference with the other parts. I will describe this part of my inven-
tion with reference to Figures 1 and 2 of the accompanying drawings Figure 1
being a side view and Figure 2 a vertical transverse section. I provide on the
inner circumference of the tyre, or rim A, of the, roller, or wheel, two inwardly
projecting flanges a a² to which the spokes bare alternately secured.
flange a, projects farther inwards than does the other flange a, and the ends of
the spokes 6, secured to the said flange a³, are of so much less length than
the spokes b, secured to the flange a, which projects to the lesser extent,
inwards, and therefore the spokes 62, secured to the flange a³, which projects to the
greater extent inwards, will pass clear of the flange a, which projects to the lesser
extent inwards. The outer ends of the spokes are supported in rebates formed
at the side of the flanges for this purpose so that on removing the bolts, or
fastenings.cc which secure the spokes to the flanges a a², the whole of the tyre,
or rim,A, of the roller, or wheel, can be drawn off and replaced. The tyre or
rin A may be made of cast iron, or steel, or it may be built up of wrought iron
with internal tee irons to form the said flanges a a². In Figure 2 the whole.of
the spokes and bolts c c are not shewn to avoid confusion but they are shewn in
Figure 1. Another object of my invention is to provide means whereby the
scrapers employed in conuection with the rollers, or wheels, are rendered flexible,
or capable of yielding in either direction, so that should anything adhere to the
rollers, or wheels, which the scrapers cannot remove, the said scrapers will yield
to pass the obstruction and afterwards return to their normal position.
1
I,will describe this part of my invention with reference to Figures 3 to 6 of the
accompanying, drawings; Figures 3 and 4 being side views at right angles to each
other Figure 5 a plan, and Figure 6 a section of the spring box.
I.secure the. scraper blade d, to one of the ends of arms, or levers e e³, the
other ends of each of the said arms or levers e e², being provided with grooves e³ e,
each engaging with a double fulcrum ff" and connected by a cross bar g, with
which, (or with each of the said arms, or levers), a spring or springs is or are
connected so as to bold the levers ee normally in contact with the said double
fulcrum ff. The arrangement is supported by a bracket, or pillar h, projecting
from the engine or vehicle to support the scraper d, normally in proper position.
relatively to the roller or wheel.
The spring arrangement shewn consists of a pin 4, whose upper end is provided
with a nut bearing on a collar j, provided. with trunnions, resting in recesses in
a cap-piece within which, is a spring 1, resting against the top of the inside of
this cap piece k, and in an annular groove m, formed in the bracket or pillar h.
The lower end of the pin i, is connected by the pin, to lugs 92, on the cross
bar g.
When an obstruction is met by the scraper d which it cannot remove the arms,
or levers e e, which carry the scraper d. will overcome the nower of the spring 1

page_text: (or springs), and each lever will turn upon one, or the other, member of its double-
fulcrum f, according to the direction in which the roller, or wheel, is travelling,.
and the spring, (or springs) will when the obstruction is passed, return the scraper d,
to its normal position.
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 :-
1. In, or for, road rollers, or other engines, or vehicles, provided with wheels,
or rollers, a tyre or rim, having flanges, one of which projects further inwards
than does the other, the spokes being connected alternately to each of these
flanges, substantially as bereinbefore described.
2. In, or for, road rollers, or other engines or vehicles, provided with wheels or
rollers, a scraper mounted upon arms, or levers, which are kept in contact by
means of a spring, or of springs, with a fulcrum such that the scraper can yield
in either direction, substantially as hereinbefore described.
3. The combination of parts constituting the flexible, or yielding, arrangement
of scraper, substantially as hereinbefore described, and illustrated in Figures 3 to 6.
of the accompanying drawings.
Dated this 9th day of December 1895.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.