An improved Road Breaking Machine.
Year: 1896

page_text: Date of Application, 18th July, 1896
Complete Specification Left, 24th Mar., 1897-Accepted, 12th June, 1897
An improved Road Breaking Machine.
We, FREDERICK JOHN BURRELL, of Saint Nicholas Works, Thetford, in the
County of Norfolk, Engineer, and HAROLD FREDERICK RUTTY, of 16 Mansfield
Road, Ilford, in the County of Essex, Contractor, do hereby declare the nature of
this invention to be as follows:-
The object of the invention is to provide a road breaking machine which can be
readily attached to either side of a traction engine or road roller in such a manner
as to avoid putting any strain upon the tender or tank; and having provision
whereby the tines are caused to automatically rise and fall and thus follow the
undulations of the road surface. The tines are caused to enter the ground by
pulling when going both backwards and forwards instead of being alternately pulled
and pushed, and by this means the roller does not pass over the newly broken
surface.
In order to carry the above into effect we utilize a triangular shaped frame
consisting principally of 2 sets of radial arms or links coupled to the main axle of
the engine and tied together at the base on each side of one of the driving wheels
or rollers and caused to rock upon the said axle or about the axis of same.
Each pair of radial arms carries a block in which the tines are fixed, so that there
are thus two sets of tines viz. one set at the back of the road wheel for going
forward and the other set at the front for going backwards; the weight of the one
set balancing that of the other and assisted if necessary by springs.
Only one set of tines is in action at a time, the other being raised up clear of
the ground by the tipping action of the frame which rocks upon or about the main
axle of the engine. The distance which the tines are allowed to enter the ground
is controlled by press pulleys or rollers which may be raised or lowered at will by
means of screws or other mechanical devices or through the use of steam or
hydraulic cylinders, the pistons of which may be either operated upon by pressure
from the boiler or from the pump of the locomotive or roller, so that the adjustment
can be quickly made from the foot plate of the engine.
Springs are arranged above the blocks carrying the tines in such a manner as to
minimise shocks which pass through the framing when the tines are in action.
The blocks which carry the tines are in no way connected to the tender of the
engine but the whole strain is transmitted directly to the main axle on both sides
of the driving wheel.
To enable the tines to follow the roller when steering round slight curves, the
radius links forming portions of the frames may if desirable be jointed next the
axle and may also be fitted with rollers to press against the outside and inside
edges of the driving wheel of the engine. The blocks which carry the tines
may be arranged to slide transversely across the face of the driving wheel and
between the frames.
The ties which form the bases of the triangular frames may either form a rigid
coupling between the blocks carrying the tines or may if desirable be fitted with
spiral springs or buffers at their ends to admit of adjustment and to reduce
vibration.

page_text: The tines are kept at their proper depth in the ground by the joint action of the
two press pulleys, one of which prevents them from sinking too deep and the other
from lifting out of the work..
Dated this 18th day of July 1806
J. P. BAYLY,
18 Fulham Place, Paddington, London, W., Agent for the Applicants.
An Improved Road Breaking Machine.
We, FREDERICK JOHN BURRELL, of Saint Nicholas Works, Thetford, in the
County of Norfolk, Engineer, and HAROLD FREDERICK RUTTY, of 16 Mansfield
Road, Ilford, in the County of Essex, Contractor, 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 object of the invention is to provide a road breaking machine, which can
be readily attached to either side of a traction engine or road roller, in such a
manner as to avoid putting any strain upon the tender, or tank; and having
provision whereby the tines are allowed to rise and fall automatically, and thus
follow undulations of the road surface.
The construction of the machine is such that the tines are caused to enter
the ground by pulling, when going both backwards and forwards, instead of being
alternately, pulled and pushed, and by this means the roller does not pass over the
newly broken surface.
And in order that our invention may be thoroughly understood, we now proceed
to describe the accompanying drawing thereof, reference being had to letters and
figures marked thereon.
Fig. 1, is a side elevation of our apparatus fitted to a road engine, part of which
is shown in section.
Fig. 2, is a plan of the top of the apparatus.
Fig. 3, is an end elevation of Fig. 4.
Fig. 4, is a side elevation with an alternate triangular shaped frame.
In order to carry this into effect, we utilize a triangular shaped frame A,
consisting principally of plates or bars, coupled to and carried by the main axle B
of the engine, such plates or bars being tied together on each side of one of the
driving wheels or rollers R, and caused to rock upon the said axle or about the
axis of same. Each triangular frame A carries a block C, C, in which
the tines d' d', d2 d, are fixed, and these blocks form distance pieces between the
frame plates A, on each side of the road-wheel R. There are thus two sets of tines
viz. those in block C' bebind the road wheel for going forwards, and the other set
in the block C in front of the road wheel, for going backwards, the weight of the
one set balancing that of the other.
Only one set of tines is in action at a time, the other being raised up clear of the
ground by the tipping action of the frame A, which rocks upon or about the main
axle B of the engine.
The distance which the tines are allowed to enter the ground; is controlled by
the hand wheel H, operating through worm wheels, or other suitable devices, a
rack J attached to the block C; by the same means the two sets of tines d', d,
are alternately brought into action for going backwards, or forwards. Instead of
the above or similar mechanical devices for raising and lowering the tines by hand,

page_text: we may use steam or hydraulic cylinders for the purpose, the pistons of which may
be either operated upon, by pressure from the boiler, or from the pump of the
locomotive roller, so that the adjustment can be more quickly made.
The springs E, E, allow the tines to rise and fall automatically in passing
over uneven surfaces, and prevent the same from entering the ground too deep,
so as to bring the engine to a standstill, as would happen when the road wheel
entered a hollow in the road.
The springs E, E, may also be utilized for the purpose of minimising the
shocks which take place when the tines are in action, and preventing same from
being transmitted through the bracket F to the boiler of the locomotive when
the road breaker is at work.
Scrapers S, S, are provided on each face of the road wheel R, and are
carried by the frames A, at the points T, and U, and are kept up to their work
by springs.
Fig. 3, is an end elevation and Fig. 4, a side view of an alternate form of road
breaker in which a flexible frame of bars is substituted for the rigid frame of
plates. The distance the tines d' d², are allowed to enter the ground is controlled
by the guide pulleys P', and P2, which latter are held in their proper position
relative to the blocks C', and C2, by the pawls Q', Q, pivoted upon the links L, L,
and engaging with the teeth T or by some other suitable device. The spring E is
placed upon the lower bars A', and A2, connecting block C' to block C' on each
side of the road wheel R and allows the latter to rise and fall automatically in and
prevents any undew strain upon the tie rods A, A, A', and A2, owing to the rigid
connection of the links L', and L2, with the blocks C, and C. It is evident that
were it not for the springs E the whole weight of the engine at times come upon
the guide pulleys P¹, and P2. The bars A are hinged to the axle B at X on each
eide of the road wheel R and rollers S revolving upon the bars A pressing against
the edges of the roller R thus cause the blocks C¹, and C³, to follow the course
of the roller in steering.
The pawls Q', and Q', may be constructed with an eccentric at their axis
so as to facilitate the disengaging of the pawls from the teeth T by the turning of
the handles H.
We are aware that pivoted blocks carrying the tines have been used in scarifiers
but have either been combined in a separate implement to be drawn behind an
engine (Jacksons) No. 5503 Mar. 28 1891 and Bomford No. 15214 Aug. 9th 1893,
or in other cases the two blocks carrying the tines have been arranged close
together upon one pivot sliding vertically in fixed guides and in this case both sets
of blocks and tines were situated behind the road. wheel of the road engine or
roller, and the strain of scarifying being taken principally by the tender assisted
by a fixed strut to the axle, thus differing materially from our invention in
construction and effect.
We would therefore have it understood that we do not claim broadly the use of
pivoted blocks carrying tines arranged as described above.
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. In a scarifier combined with a road engine, two separate sets of blocks
carrying tines, one set arranged in front, and the other set in the rear of the road
engine wheel respectively, and carried upon the main axle of same, so that the scarifier
works with equal effect whether the engine is going backwards or forwards and
the tines are brought into action alternately by being made to rock radially upon
or about the main axle of the engine, substantially as described in the specification
and according to the accompanying drawings.
2. In a road breaking machine, the combination of the fixed blocks carrying the
tines and forming part of the rocking frame, one set arranged to balance the other

page_text: with the road wheel of the engine between them, substantially as described and for
the purpose set forth.
Dated this 24th day of March 1897.
J. P. BAYLY,
18 Fulham Place, London, W., Agent for the Applicants.