Year: 1887

page_text: Date of Application, 31st Mar., 1887
Complete-Left,--21st Dec., 1887
Complete Accepted, 3rd Feb., 1888
We, THOMAS PERKINS and JOHN EDWARD SHARMAN PERKINS both of Queen
Street, Peterborough, Engineers, do hereby declare the nature of this invention to be
as follows:
In steam rollers as at present constructed it is usual to have at the rear of the
implement two rollers at a distance apart, the track between them being rolled by a
roller in front which also acts as a steering wheel-the two hind rollers are driven
by gearing from the engine.
We reverse this arrangement, having a single wide roller at the rear driven by
the engine and two narrower wheels or rollers in front. These may be arranged so
that the space between the tracks rolled by them is just rolled by the rear roller or
they may be used as steering wheels only, or the steering may be by a single central
wheel. When the front rollers are separated from each other the frame of the engine
can be brought much lower than is now possible.
We also propose to place the engine and boiler which may either be vertical or
horizontal between the front and back rollers.
This arrangement allows a heavy roller and a comparatively light engine and
boiler to be used and we prefer to make the rear roller hollow so that it may be filled
with sand or water, in some cases however it may be desirable to form it of rings.
In steam rollers as heretofore made the rolling power has mainly depended on
the weight of the steam engine and boiler, or the framing carrying these, or, on some
other weight being placed over or between the rollers.
By our arrangement the weight upon the bearings is greatly diminished and the
friction consequently reduced.
a
We also propose to simplify the two speed gearing used for driving. We provide:
toothed pinion sliding on the crank shaft, this either gears with a toothed wheel
whose axis carries a pinion gearing with a ring of teeth on the roller, or (when shifted
along the crank shaft) it drives this toothed wheel through the intervention of another
wheel and pinion having a common axis.

page_text: Improvements in Machinery for Rolling Roads and other Surfaces.
We, THOMAS PERKINS and JOHN EDWARD SHARMAN PERKINS, both of Queen
Street, Peterborough, Engineers, 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
-
In steam rollers as at present constructed it is usual to have at the rear of the
implement two rollers at a distance apart, the track between them being rolled by a
roller in front which also acts as a steering wheel-the two hind rollers are driven by
gearing from the engine.
We reverse this arrangement, having a single wide roller at the rear driven by the
engine and two narrower wheels or rollers in front. These may be arranged so that
the space between the tracks rolled by them is just rolled by the rear roller or they may
be used as steering wheels only, or the steering may be by a single central wheel.
When the front rollers are separated from each other the frame of the engine can be
brought much lower than is now possible.
We also propose to place the engine and boiler which may either be vertical or
horizontal between the front and back rollers.
This arrangement allows a heavy roller and a comparatively light engine and boiler
to be used and we prefer to make the rear roller hollow so that it may be filled with
sand or water, in some cases however it may be desirable to form it of rings.
In steam rollers as heretofore made the rolling power has mainly depended on the
weight of the steam engine and boiler, or the framing carrying these, or, on some
other weight being placed over or between the rollers.
By our arrangement the weight upon the bearings is greatly diminished and the
friction consequently reduced.
We also propose to simplify the two speed gearing used for driving. We provide
a toothed pinion sliding on the crank shaft, this either gears with a toothed wheel
whose axis carries a pinion gearing with a ring of teeth on the roller, or (when
shifted along the crank shaft) it drives this toothed wheel through the intervention of
another wheel and pinion having a common axis.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a side view and figure a plan of an engine constructed according to
our invention.
a is the rear roller driven by the engine. b b are two front rollers which also act
as steering wheels, c is the boiler, as before explained in place of being a vertical
boiler as shewn it may be horizontal in which case also it would be placed between the
rollers in place of over one or more of them as is usual. d is the engine cylinder,
e' is the crank shaft and is a pinion capable of sliding upon it. The pinion f either
gears with the wheel has shown or it gears with the wheel j whose axis carries the

page_text: pinion gearing with the wheel h. The axis of the wheel h carries the pinion!
gearing with the ring of teeth m on the roller a.
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 is :-
1. Machinery for rolling roads and other surfaces in which there is a single wide
roller at one end driven by the engine and two steering rollers or wheels at the other
end substantially as described.
2. Machinery for rolling roads and other surfaces in which there is a single wide
roller at one end driven by the engine and a single steering roller or wheel at the
other end substantially as described.
3. Machinery for rolling roads and other surfaces in which the boiler is placed
between the rollers substantially as described.
4. Machinery for rolling roads and other surfaces in which the engine and boiler
are comparatively light and the necessary weight is obtained by introducing heavy
material such as water or sand into the hollow roller substantially as described.
5. The two speed gearing for driving machinery for rolling roads and other
surfaces substantially as described.
6. The improvements substantially as described and shown in the drawings.
Dated this 21st day of December 1887