Improvements in Road Scarifiers.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Road Scarifiers.
We, EDWARD JOHN CARRINGTON RUSSELL, of Sackville House, St. Leonard's
Road, Bexhill-on-Sea, Sussex, and PERCY COTTRELL, of Cripp's Corner, Stapleross,
Sussex, Gentlemen, do hereby declare the nature of this invention to be as
follows:-
Our invention relates to improvements in road scarifiers and refers more particu-
larly to a scarifier designed to be attached to an ordinary steam road roller or
traction engine for the purpose of breaking up the surface of macadamized
roads preparatory to reshaping, remetalling or otherwise repairing them, the
objects and advantages being ability to break up the whole width of a road
notwithstanding the gradient upon which it may be formed, avoidance of strain
on the weakest part of the roller, namely, the tender, and general simplicity and
economy in construction.
In carrying our invention into practical effect, the frame of the scarifier is
preferably formed of two metal plates bolted firmly one upon each side of the
body of the roller, of a sufficient length to reach from the main driving axle
and to project a convenient distance in the rear of the tender. Each plate is
furnished with a circular bearing formed near its extremity. These plates are
united immediately in the rear of the tender by a plate, which combines the
functions of connecting the two main plates, fixing the plates so connected by
a bracket to the angle iron on the tender forming the drawing attachment of
the roller, and thickening and strengthening the part of the framework in rear
of the tender where pierced for bearings.
The bearings are formed with collars and made to fit and revolve in the holes
formed in the frame hereinbefore referred to, suitable set screws being provided
to keep the revolving hearings in position. The revolving bearings are each bored
to take a bar preferably of rectangular cross section which rests in them and
projects a convenient distance beyond the outer side of each.
This rectangular bar carried a sufficient number of chairs or shoes designed
to carry the tines or teeth which do the actual work of tearing up the road, each
chain or shoe being provided with a set screw so as to keep it in position on
the bar and in such a manner that upon loosening this set screw the position
of the chair or shoe may be altered or regulated according to requirements.
The scarifier is preferably put into and out of action by a lever fitting at one
end on the aforesaid rectangular bar and engaging at the other with a screwed
shaft fitted with a suitable hand wheel, and by this means the lever can be
raised or lowered, thereby causing the bar to revolve in its bearing which raises
or lowers the tines or teeth as required.
1000

page_text: Improvements in
We, EDWARD JOHN CARRINGTON RUSSELL, of Sackville House, St. Leonard's
Road, Bexhill-on-Sea, and PERCY COTTRELL, of Cripp's Corner, Staple Cross,
Sussex, Gentlemen, 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:
-
Our invention relates to improvements in road scarifiers and refers more particu-
larly to a scarifier designed to be attached to an ordinary steam road roller or
traction engine, for the purpose of breaking up the surface of macadamized
roads preparatory to reshaping, remetalling or otherwise repairing them, the
objects and advantages being, ability to break up the whole width of a road
notwithstanding the gradient upon which it may be formed, and without turning
the engine, avoidance of strain on the weakest part of the roller, namely, the
tender, and general simplicity and economy in construction.
In carrying our invention into practical effect, the frame of the scarifier is
preferably formed of two metal plates bolted firmly one upon each side of the
body of the roller, of a sufficient length to reach from the main driving axle
and to project a convenient distance in the rear of the tender. Each plate is
furnished with a circular bearing formed near its extremity. These plates are
united immediately in the rear of the tender by a plate which combines the
functions of connecting the two main plates, fixing the plates so connected by
a bracket to the angle iron on the tender (forming the drawing attachment of
the roller), and thickening and strengthening the part of the framework in rear
of the tender where pierced for bearings.
The bearings are formed with collars and made to fit and revolve in the holes
formed in the frame herein before referred to, suitable set screws being provided
to keep the revolving bearings in position. The revolving bearings are each bored
to take a bar, preferably of rectangular cross section, which rests in them and
projects a convenient distance beyond the outer side of each.
This rectangular bar carries a sufficient number of chairs or shoes designed
to carry the tines or teeth which do the actual work of tearing up the road, each
chair or shee being provided with a set screw so as to keep it in position on
the bar and in such a manner that upon loosening this set screw the position
of the chair or shoe may be altered or regulated according to requirements.
The scarifier is preferably put into and out of action by a lever fitting at one
end on the aforesaid rectangular bar and engaging at the other with a screwed
shaft fitted with a suitable hand heel, and by this means the lever can be
raised or lowered, thereby causing the bar to revolve in its bearing which raises
or lowers the tines or teeth as required.
In order that our invention may be more fully understood, we will now proceed
to describe same with reference to the accompanying drawings in which,
Fig. 1 is a side elevation of a portion of the rear part of the body of a steam
roller, showing our improved road scarifier with the chairs, shoes or tine carriers
arranged on the central portion of the bar.
Fig. 2 is a sectional plan of the rear portion of the body of a steam roller
showing the bearings for the bar, also the lever by means of which it is operated.
Fig. 3 is a side elevation of one of the chairs, shoes or tine carriers.
Fig. 4 is a view taken at right angles to Fig. 3.
Fig. 5 is a detailed view of one of the side plates showing the piercing for
bearing, and
Figs. 6 and 7 are detailed views of one of the circular bearings.

page_text: Fig. 8 is a plan of the bracket and hand wheel of the operating screw shaft
and,
Fig. 9 is a side view of this bracket shown in position but drawn to a reduced
scale as compared with Fig. 8.
Fig. 10 is a side view of one of the tines or teeth.
According to this invention, two metal plates a, a, are firmly bolted one upon
each side of the body of the roller as shown, each plate being furnished with a
circular hole or piercing c at its extremity (Fig. 5). The plates
a a are united
immediately in the rear of the tender by the plate or bracket b (Fig. 2) which
combines the functions of connecting the two plates a, a, fixing the plates so
connected to the rear of the tender and thickening the projecting extremities
of these side plates a a where pierced for bearings.
Referring more particularly to Figs. 2, 6 and 7 each bearing comprises a circu-
lar body a, formed integrally with a collar or shoulder b₁, and a loose ring or
collar c designed to take on to the circular body a' as indicated in dotted lines
where it is secured in position by means of a suitable set screw or the like d.
The circular body a¹ rests within the piercing or opening c (Fig. 5) formed in
the extremity of the side plate a and the forward extremity d of the bracket
or plate 6, while through each circular bearing a preferably rectangular opening c
is formed as shown (Fig. 6) through which a correspondingly shaped bar f
passes, where it is secured in position by means of a suitable set screw or the
like, this bar being free to turn with the circular bearings above referred to.
Upon this rectangular bar a sufficient number of chairs, shoes or tine carriers
are arranged, each of which consists preferably of the central double plate g
connected by the boss g¹ and the bridge piece g and of the side plates h furnished
with bosses h¹ while through these bosses a rectangular opening is formed
whereby the whole device may be mounted upon the rectangular bar f where
it is secured in position by means of a suitable set screw ¹, so as to be free
to turn with the aforesaid bar f.
Between the double plates of the central piece g and the side plates h h two
tines m are gripped and secured in place by suitable bolts passing through the
openings or holes m¹.
One or more of these chairs, shoes or tine carrying devices are mounted upon
the central portion of the bar f, while one may be arranged upon each or either
projecting extremity of the said bar, the position of these tine carrying devices
being easily regulated as required.
The scarifier is preferably put into and out of action by a lever ? which may
be furnished with a boss as shown (Fig. 1) through which a rectangular open-
ing may be formed to allow of its being secured to the rectangular bar f. The
free end of this lever engages with a screw shaft g operated by means of a
suitable hand wheel ql, so that by rotating the screw shaft q in a certain direction
the lever, is lowered turning the bar f with its circular bearings carried by the
extremities of the side plates a, and the ends of the plate or bracket b, thereby
bringing the tines m into contact with the ground and into which they may
be caused to enter or penetrate to any required depth, while upon reversing the
motion of the screw shaft, the lever pis raised turning the bar f with its
bearings in the opposite direction and raising the tines m from the ground.
A check chains may be employed, if required, to take or bear a part of the strain
on the lever and bar, when in use.
Each tine holder has been shown as capable of carrying two tines or teeth,
but it may be easily and simply modified to carry one tine or tooth only, as will
be readily understood.
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/. The improved method of and means for applying a road scarifier to a road.

page_text: roller, comprising the arrangement of the side plates a a and a plate or bracket b;
in combination with circular revolving bearings carrying a preferably rectangular
bar such as f and tines or teeth such as m, carried in a suitable tine carriers such
as shown at Figs. 3 and 4, designed to be mounted upon the said barf and
to turn with it when the latter is raised or lowered by a suitable lever such as p
operated by means of a suitable screw shaft such as q, substantially as herein
described and shown with reference to the accompanying drawings, and for the
purposes specified.
2. In a tine carrier, such as above claimed, the arrangement of a preferably
rectangular bar such as f carried in circular bearings as described designed to
turn in the extremities of the side plates a and the forward ends of the
bracket or plate when operated, preferably by a lever such as p, and a screw
shaft such as q, substantially as herein described and shown and for the purposes
specified.
3. The combination with a preferably rectangular bar mounted in circular
bearings and free to turn when suitably operated as above claimed, of tine
holders substantially as described with reference to Figs. 3 and 4 of the accom-
panying drawings, carrying tines or teeth such as m.
4/. In a road scarifier such as above claimed, the combination with a preferably
rectangular bar such as f mounted in circular bearing so as to be free to turn;
of a tine carrier or tine carriers comprising the double central portion 9 and
side plates h, h, having bosses g', h¹h through which is bored a rectangular
hole such as whereby they may be slipped on to the rectangular bar f, sub-
stantially as herein described and shown with reference to the accompanying
drawings, and for the purposes specified.
5/. In a road scarifier such as above claimed, the combination with a rectangular
bar such as f, of suitable revolving bearings such as shown (Figs. 6 & 7) and
designed to be carried by and turn in holes or piercings formed in the forward
extremities of the plates a a and the corresponding sides or extremities d¹ of
the plate or bracket b, substantially as herein described and shown with reference
to the accompanying drawings, and for the purposes specified.
6/. The improvements in road scarifiers substantially as herein described and
shown with reference to the accompanying drawings, and for the purposes
specified.
Bacomban 1808
F. G. CASSELL
(Of Cassell & Co.),
22, Glasshouse Street, Regent Street, London, W.,
Agent for the Applicants.
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