An Scariner.
Year: 1897

page_text: I, WILLIAM LAMBERT, of Horsmonden, in the County of Kent, Engineer, do
hereby declare the nature of this invention to be as follows:-
This invention relates to an improved road scarifier that may be attached to a
steam roller, traction engine, or other suitable motor.
Such improved road scarifier is fitted with an oscillating trunnion-tumbler
furnished with two series of adjustable tines of which at the end of each bout
by reversing a draw or push bar, the forward series is released while the series
which is diametrically opposite is brought into operation.
When travelling from one locality to another the tines are retained in a hori-
zontal position by the draw or push bar which is secured at a suitable angle by a
catch or other equivalent means.
The trunnion-tumbler is mounted centrally in order to concentrate the main
weight of the machine upon the tines when they are at work.
The pitch of the tines is adjusted and regulated by a cam and adjustable
lug or die or other equivalent means.
The depth of the work is regulated by adjustable screws, which may be
operated either simultaneously or separately so as to adjust the tines to the
requisite pitch to work to the desired depth.
To obviate the engine passing and re-passing at each bout the trunnion-tumbler
may be connected to the draw or push bar by a knuckle joint or other equivalent
means.
1002
An improved Road Scariner.
I, WILLIAM LAMBERT, of Horsmonden, in the County of Kent, 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;
-
This invention relates to an improved road scarifier of the independent type
that may be attached to a steam roller, traction engine, or other suitable motor,
and has for its object increased facility and effectiveness of operation.

page_text: In the accompanying drawings Figure 1 is a side elevation, Figure 2 a plan,
Figure 3 a vertical section taken on the line A. A. Fig. 1, Figure 4 a longitudinal
section taken on the line B. B. Fig. 2, and Figure 5 a front elevation of one of
my improved road scarifiers; while Figures 6, and 7 illustrate in side elevation
and plan certain modifications of my invention. Figs. 8 and 9 are detail views
in front elevation and section showing how the hand lever is fitted to the trunnion
tumbler, and Figs. 10 and 11 are detail views in side elevation and section showing
how the tines are fitted in the tine holder.
Similar letters of reference indicate corresponding parts throughout the various
figures.
My improved road scarifier consists of a frame a, having stops a' formed thereon
and fitted at each end with two steering wheels b and two ballast wheels c. A
trunnion tumbler is journalled in the sides of the frame and is supported by a
plummer block e. Such trunnion tumbler consists of a tine holder d¹ furnished
with a connecting rod d², and trunnions 3 fitted with stops d. A draw bar f
fitted with adjustable pins f¹ is mounted in the frame as shewn in the drawings
and is pivoted in a slot in the connecting rod so as to form a knuckle joint g
whereby when the draw bar is pushed over the trunnion tumbler is carried over
with it thus automatically reversing the tines. When the draw bar is pulled for-
ward or pushed over the front or back pin f¹ forms a stop that comes in contact
with the frame, thus keeping the machine in a straight line with the motor and so
facilitating steering. Holes are made in the draw bar wherein the pins f¹ are
inserted according to requirements, while the ends of such draw bar are bifurcated
as shewn in Fig. 2 to allow them to pass the steering shafts g₁ and be connected
to a steam roller, traction engine, or other motor by a coupling and universal
joint or in any other convenient manner.
Or instead of automatically operating the trunnion tumbler by means of the
draw bar in the manner already described it may be operated by a hand lever h
and counterpoise has shewn, and when the machine is at work the tumbler can
be held in position by a pin i. The hand lever has a stop 2 formed thereon which
stop when the lever is operated comes in contact with a stop d³ formed on the lever
bearing thus reversing the trunnion tumbler and withdrawing the tines. When
the tumbler is thus operated it is disconnected from the draw bar by removing
the pin from the knuckle joint thus allowing the attendant to raise and lower the
tines by means of the hand lever h as occasion may require. If it be desired to
alter the pitch of the tines this may be effected either by shifting the pins in the
draw bar when the tines are being automatically operated thereby; or, when they
are being operated by the hand lever h, by inserting wedges between the stops a¹
on the frame, and d' on the tumbler so as to keep the latter in the requisite
position. The steering wheels are connected to the steering shafts as shewn in
Figures 1, 4, 5, 6, and are placed as close together as possible in order to facilitate
steering. The steering shafts are screw threaded and fitted with nuts k and
spanners whereby the frame of the machine can be raised and lowered so as to
regulate the depth of the work by throwing the weight of the machine on to, or,
taking it off the tines. Chain wheels and chains m, m' are fitted to the steering
shafts and to chain shafts n, mounted in bearings n and are operated by hand
wheels o fitted on the chain shafts or in any other convenient manner. When steering
the machine the steering shafts work in the nuts while the latter remain station-
ary, and when raising or lowering the frame such nuts are rotated by means of
the spanners thus raising or lowering the steering shafts without rotating them.
The ballast wheels can be brought rigidly against the frame by means of screws p
working in nuts p¹ fitted in sockets y in the manner shewn in Fig. 3. Such nuts
are operated by a spanner and when the wheels are adjusted they are retained in
position by packing pieces which are inserted between the frame and the wheel
axles as shewn in Figs. 3 and 4. By this means also such wheels can be raised
so as to throw the weight of the machine on to the tines in the manner already
described to regulate the depth of the work so as to effectually break up the road

page_text: surface and make it uniformly level. The tiness are pointed at both ends so as
to be reversible and are fitted in dummies s' in the tine holder and secured therein
by screws or their equivalents as shewn in Figs. 10 and 11.
Figures 6 and 7 shew in side elevation and plan a single steering scarifier which
in all essential respects is constructed according to my invention as hereinbefore
described, but which is furnished with only a single pair of steering and ballast
wheels and a single chain wheel and chain operated by a single hand wheel
mounted on a chain shaft the bearings of which are placed at the forward end of
the machine. This alternative construction of my improved scarifier is suitable
when it is desired to avoid the expense of the double steering scarifier hereinbefore
described.
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 a road scarifier the combination of an oscillating trunnion tumbler
furnished with suitable tines with a reversible draw bar whereby the tines can
be automatically reversed all substantially as described.
2. In a road scarifier the combination of an oscillating trunnion tumbler
furnished with suitable tines with a hand lever and counterpoise whereby the tines
can be reversed and adjusted all substantially as herein before described.
3. In a road scarifier the combination of threaded shafts forming the steering
shafts of the machine with nuts and spanners whereby the frame can be raised or
lowered as desired all substantially as hereinbefore described.
4. In a road scarifier the combination of chain wheels and chains fitted to the
steering shafts with chain shafts mounted in suitable bearings and operated by
hand wheels or in any other convenient manner for steering the machine all sub-
stantially as described.
5. In a road scarifier the combination of screws working in nuts fitted in sockets
and operated by spanners for adjusting the ballast wheels of the machine all sub-
stantially as described.
6. In a road scarifier reversible tines fitted in dummies in a tine holder and
secured therein by screws or their equivalents all substantially as described.
7. The improved reversible road scarifier made arranged and operating all sub-
stantially as hereinbefore described and shewn.
8. The improved non-reversible road scarifier made arranged and operating all
substantially as hereinbefore described and shewn,
Dated this 7th day of September 1898
ELT & Co.,
Registered Patent Agents,
43, Southampton Buildings, London, Agents for Applicant