Improvements in or relating to Road Breaking Machines.
Year: 1898

page_text: Date of Application, 21st Feb., 1898
Improvements in or relating to Road Breaking Machines.
I, HARRY MORRISON, 23, Glenparke Road, Forest Gate, Essex, Engineer, do hereby
declare the nature of this invention to be as follows:
-
This invention relates to improvements in or relating to road breaking machines,
the object being to so arrange the tools that it is not necessary for the machine
to go over the ground which has been broken. In carrying out my invention I
provide two tool holders or bars which may be operated in upright guides and so
arranged that when one set of tools is lowered into cutting position the other is
removed from the surface to be broken and vice versa. If desired the bars or
holders carrying the tools may be turned or rotated in the guides as required, and
locked in the desired position by means of a pin which passes through the holder
or any other suitable form of locking device. By this arrangement the machine
can be driven in one direction and then by reversing the tools may be driven in
another or opposite direction, and so breaking the road or surface.
I sometimes find it convenient to employ one tool holder or bar only, which
is so arranged that it may be turned or rotated in the guide or guides so as to be
operative in any direction of motion of the machine.
Toted the 014
1000
Improvements in or relating to Road Breaking Machines.
I, HARRY MORRISON, 23, Glenparke Road, Forest Gate, Essex, Engineer, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
This invention relates to improvements in or relating to road breaking machines,
the object being to so arrange the tools that it is not necessary for the machine
to go over the part of the ground which has been broken. In carrying out my
invention I provide two tools holders or bars which may be operated in upright
guides and so arranged that when one set of tools is lowered into cutting position
the other is removed from the surface to be broken and rice versa. If desired the
bars or holders carrying the tools may be turned or rotated in the guides as
required, and locked in the desired position by means of a pin which passes through
the holder; or any other suitable form of locking device may be employed. By
Price 17

page_text: this arrangement the machine can be driven in one direction, and then by revers-
ing the tools, and driving in another or opposite direction, the road or surface may
be broken in either directions of motion of the machine.
I sometimes find it convenient to employ one tool holder or bar only, which is
so arranged that it may be turned or rotated in the guide or guides so as to be
operative in any direction of motion of the machine.
For purposes of illustration. I will now refer to the annexed drawings, in
which;-
Figure 1 is a side elevation of a part of a road roller or engine shewing my
invention applied thereto. The tools a which are set at the required angle are
carried in the holders and secured therein by means of wedges c or the like by
any convenient means. The holder is carried upon the support d which slides
and may be revolved in the cylinder or casing e, being raised or lowered therein
by means of the rack f which gears with the toothed wheel 9, this wheel being
driven by the toothed wheel which is operated by the worm i upon the connect-
ing rod through the medium of the hand wheel or other convenient means.
is a pin which passes through the cylinder or casing e and also through aper-
tures in the support d, so that the tools may be locked in either position; that is
to say as shewn by the full lines or the dotted lines, the pin 7 being secured in
position in any convenient manner. It will be seen that when the road roller
or engine is travelling in one direction, say that of the arrow 1 the tools a¹ will be
in operation, the depth of the cut being regulated by means of the rack and worm
aforesaid. When travelling in the opposite direction the tools a may be lowered
and brought into operation. At the same time the tools a¹ will be removed from
operation when not in contact with the road surface.
It will be readily seen that there are details of construction which may be varied
without departing from the principle of my invention.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed I declare that what I
claim is: :-
1. In road breaking apparatus; the combined construction and arrangement of
the various parts substantially as described and illustrated herein and for the
purpose set forth.
2. In road breaking apparatus; the employment of cylinders or casings in the
support slides, said support carrying the tools which are set at the required angle,
the support being arranged and adapted to be raised and lowered by means of a
rack and worm wheel gearing or such convenient means, so that the removal of a
tool or set of tools will at the same time cause another tool or set of tools to be
brought into contact with the surface to be broken, thus enabling the surface to
be operated upon in both directions of motion of the road roller or engine, sub-
stantial y as described and illustrated herein.
+
Dated this 21st day of November 1898.