Improvements in Road Scariflers.
Year: 1894

page_text: Date of Application, 26th Feb., 1894-Accepted, 31st Mar., 1894
COMPLETE SPECIFICATION.
Improvements in Road Scariflers.
I, GEORGE GAMMAN RUTTY, of St. Leonard's Street, Bromley-by-Bow, in
the County of Middlesex, 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 :-
This invention relates to road scarifiers of the kind or class described in the
Specification of my prior British Patent No. 8338 dated 28th May, 1884, and has
for its objects to improve the construction of such machines and to increase the
amount of work capable of being done thereby.
One important feature of my said invention is the provision of very simple
means for varying the inclination of the draught chain as desired to suit roads of
different degrees of hardness and for other purposes.
Another important feature is the means I employ for carrying and for raising
and lowering the front and rear wheels to regulate the depth to which the road
shall be scarified, to admit of readjustment of the machine as the tines wear, and
to raise the tines safely over any obstruction that may be met with. Such
adjustments can be rapidly and easily effected while the machine is at work.
My said invention comprises other improvements as hereinafter set forth.
In the accompanying drawings which illustrate my invention,
Figure 1 is a side elevation,
Figure 2 is a plan with one wheel and its supporting frame removed, and
Figure 3 is an end elevation of the machine.
Figure 4 is a side elevation and.
Figure 5 is a plan of a detail hereinafter described.
A is the main body or carriage; B is the axle thereof on which are mounted the
wheels B B. C, C are strong arms projecting from the carriage A. at the forward
and rear ends thereof, said arms being grooved at C¹, C₁ (see Figure 2) to forni
In
guides for strong frames D D which can slide up and down in said grooves..
some instances the grooves C, C¹ for receiving the frames are made in removable
heads C, C Figures 4 and 5 securely attached to the arms C, C by bolts or
otherwise. In such cases any breakage that may occur at the grooves 'may be
repaired by replacing the broken head with a new head which can be done at very
little expense. The head also may be replaced when it becomes worn. Each said
frame D is furnished with a screw D' by which it can be adjusted to any desired
position. D, D² are wheels carried in suitable bearings at the lower ends of said
frame. E, E, E are the tines. F, F are the draught shackles; G is the draught
chain. The carriage A is preferably made hollow for receiving weights, the
number of which can be increased or diminished as desired to accommodate the
machine to roads of different degrees of hardness or to provide for scarifying to a
greater or less depth. The axle B is made to slide through its bearings and to be
secured in the central position or in its extreme side position by a pin B² which
passes through a lug B formed on the carriage and through a hole in the axle.
When the axle is in its extreme position, one of the wheels B' is received in a
recess B formed in the side of the carriage. In that position of the wheel the
scarifiers can be brought close up to the curb of the road. The screws D¹, D'
are supported in suitable bearings at the upper and lower ends of the frames D, D
and are prevented from endwise movement in said frames. They pass through the
arms C, C which are suitably screw threaded at C' to receive them, or are fitted
with removable nuts. By turning the handles D³, D' on the upper ends of the

page_text: screws, the frames D, D can be raised and lowered and the wheels D³, D³ thereby
adjusted to admit of scarifying the road to any desired depth. D, D are
removable locking pins which when in position prevent the rotation of the
screws D', D'. The tines E are received in suitable sockets E' provided in the
carriage and are secured in place by screws E³ which preferably pass through
removable steel nuts E³ let into recesses provided to receive them. Such arrange-
ment allows of removing the nuts when the same are worn and replacing them at
very slight expense by new nuts.
The socket holes E¹ are preferably continued through to the interior of the
carriage A so that the tines can be very readily driven out from behind should they
stick in their sockets.
:
on
The draught shackles F are mounted on pins F¹ passed through pairs of lugs F³, F²
formed on the carriage. The position of the said shackles can be varied said
pin, that is to say, the shackles may be placed to embrace the lower or the upper
lug of each pair of lugs F2, F2 or may be placed between the lugs being securely
held in position in either case by the pins. By this means the point of attachment
of the chain to the body of the machine may be raised or lowered and consequently
the inclination of the draught chain may be varied to suit requirements. For
very light or soft roads the draught shackles would be placed in a low position in
which position the draught chain would be inclined upwards at a pretty considerable
angle, whereas on hard or heavy roads the shackles would be moved to their highest
position, so that the pull on the draught chain might have less effect in counter-
acting the weight of the machine acting upon the tines.
A scarifier constructed in accordance with this invention possesses many advan-
tages over scarifiers constructed as heretofore and will do considerably more
work in the same time. This results chiefly from the construction of the fore
and rear frames which as before stated can be very readily adjusted even when
the machine is at work to regulate the depth of the scarifications and to adjust
the machine in accordance with the wear of the tines, which as is well known is
very rapid. Without such capability of adjustment while at work it would be
necessary to frequently stop the machine in order to properly re-adjust the same to
allow for the wear of the tines subsequent to the previous adjustment.
This construction also enables the tines to be raised with great facility without
stopping the machine and so allows of passing over gas and water boxes, gully
grates, manhole covers, crossings, and other obstructions, which it is necessary to
avoid. Moreover by reason of the adjustability of the draught shackles together
with that of the frame, the weight of the machine can be thrown upon the tines
with greater effect than is possible in machines constructed as heretofore.
Having now particularly described and ascertained the nature of my said iuven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. A road scarifier having at each end a frame which is adjustable in guides by
means of a screw and which carries a wheel at its lower end, substantially as and
for the purpose, specified.
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2. A road scarifier so constructed that the adjustment thereof for varying the
depth of scarifications can be effected while the same is at work without tending to
divert the machine from its course.
3. The combination, with a road scarifier such as that indicated in the first
claiming clause, of adjustable draught shackles, substantially as, and for the
purpose, specified.
4. The combination, with a road scarifier such as indicated in the first claiming
clause, of the movable axle, and the recess in the side of the carriage for receiving
one of the wheels, substantially as, and for the purpose, specified.
5. A road scarifier such as indicated in the first claiming clause in combination
with removable nuts for receiving the screws which secure the tines in position,
substantially as described, for the purpose specified.

page_text: 6. In such a road scarifier the removable head at the ends of the arms C, C,
substantially as, and for the purpose, specified.
7. A road scarifier constructed substantially as described with reference to the
accompanying drawings, and operating as specified.
Dated this 23rd day of February 1894.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.