IMPROVEMENTS IN MACHINERY OR APPARATUS USED FOR BREAKING STONE
Year: 1871

page_text: :
LETTERS PATENT to John Robert Ord and Henry Maddison, both
of Darlington, in the County of Durham, for the Invention of
"IMPROVEMENTS IN MACHINERY OR APPARATUS USED FOR BREAKING STONE."
Sealed the 22nd September 1871, and dated the 23rd June 1871.
PROVISIONAL SPECIFICATION left by the said John Robert Ord and
Henry Maddison at the Office of the Commissioners of Patents,
with their Petition, on the 23rd June 1871.
We, JOHN ROBERT ORD and HENRY MADDISON, both of Darlington,
in the County of Durham, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN MACHINERY OR APPARATUS USED FOR BREAKING
STONE," to be as follows:-
This Invention relates to certain improved apparatus to be used in
connection with "Blake's stone breaker," or other similar machine used
for breaking stone or "metal" as it is called, for road-making purposes,

page_text: and consists principally in the employment in combination with such
machine one or more pairs of corrugated rollers of chilled iron or steel
through which the stone passes after being broken by the machine, and
by which it becomes further broken or macadamized, and is rendered
peculiarly fit for road-making purposes. These rollers are placed hori-
zontally beneath the jaws of the stone-breaking machine, so that the
stone as it is roughly broken by the latter falls between the two rollers
(one of which is grooved or corrugated longitudinally and the other is
grooved or corrugated in the direction of its circumference), and it
becomes thereby further reduced. These two rollers are mounted and
revolve in suitable bearings, one of which is fixed, and the other is
forced against it by means of a powerful weighted lever or spring which
allows the movable roller to give way and prevents the breakage of the
machine in case any piece of stone or metal should be too large or too
hard to yield to the crushing power of the corrugated rollers. From
these rollers the broken stone or "metal" falls into a revolving inclined
screen, whereby it is delivered in different sizes into wagons or re-
ceptacles beneath.
.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Robert Ord and Henry Maddison in the 2
Great Seal Patent Office on the 22nd December 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOHN
ROBERT ORD and HENRY MADDISON, both of Darlington, in the County
of Durham, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her 2
Letters Patent, bearing date the Twenty-third day of June, in the year of
our Lord One thousand eight hundred and seventy-one, in the thirty-
fifth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto us, the said John Robert Ord and Henry Maddison, .
Her special license that we, the said John Robert Ord and Henry 3
Maddison, our executors, administrators, and assigns, or such others as
we, the said John Robert Ord and Henry Maddison, our executors, admi-..
nistrators, and assigns, should at any time agree with, and no others,

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from time to time and at all times thereafter during the term therein
expressed, should and lawfully might make, use, exercise, and vend,
within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN MACHINERY
5 OR APPARATUS USED FOR BREAKING STONE," upon the condition (amongst
others) that we, the said John Robert Ord and Henry Maddison, our
executors or administrators, by an instrument in writing under our, or
their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that we, the said John Robert Ord and Henry
Maddison, do hereby declare the nature of the said Invention, and in
what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement and accompanying
Drawings (that is to say) :-
This Invention relates to certain improved apparatus to be used in
connection with. " Blake's stone breaker" or other similar machine
used for breaking stone (or "metal" as it is called) for road-making
purposes, and consists principally in the employment in combination
with such machines of one or more pairs of corrugated rollers of
chilled iron or steel (as herein-after described), through which the stone
passes after being broken by the machine, by which it becomes further
broken or "macadamized" and rendered peculiarly fit for road-making
purposes.
Such being the nature and object of our said Invention for "Im-
provements in Machinery or Apparatus used for Breaking Stone," we
will now proceed to describe more in detail the manner in which the
same is to be or may be performed or carried into practical effect; and
in order that the same may be clearly understood we have annexed
hereunto a Sheet of Drawings illustrative thereof, and have marked the
same with figures and letters of reference corresponding with those in
the following explanation thereof :-
Fig. 1 in the Drawing represents a side elevation, Fig. 2 a front view
of "Blake's stone breaker." showing our improvements.
ΠΑ annlied

page_text: thereto, and Fig. 3 is a plan view on a larger scale of a pair of the
corrugated rollers detached from the machine,
•
These rollers a, a, are mounted horizontally beneath the jaws of the
stone-breaking machine b, b, so that the stone as it is roughly broken by
the latter falls between the two rollers a, a, one of which is grooved 5
or corrugated longitudinally, and the other is grooved or corrugated
in the direction of its circumference, as shown clearly at Fig. 3, and
by means of these rollers it becomes further reduced in size. These
two rollers are mounted and revolve in suitable bearings c, c, one of
which is fixed and the other is forced against it by means of a powerful 1
weighted lever d, d, (or by a strong spring) which allows the movable
roller to give way and prevents the breakage of the machine in case
any piece of stone or metal should be too large or too hard to yield to
the crushing power of the corrugated rollers. From these rollers the
broken stone or metal falls into the revolving inclined screen e, e, 1
whereby it is delivered in different sizes into wagons or receptacles
beneath in the usual manner.
This combined apparatus may be driven in any convenient manner,
but we prefer to drive it by the gearing shown in the plan view Fig. 4.
ff, is the fly wheel shaft of the steam engine, upon which is keyed a 2
spur pinion 9, 9, driving the corrugated rollers a, a, by means of the
spur gearing h, h. A spur wheel i, i, gearing into one of the roller
pinions drives the revolving screen e, e, the stone breaker 6, 6, being
driven by means of a strap k, k, passing round a pulley 1, 2, which
is also actuated from the fly wheel shaft by means of the bevil?
gearing m, m.
We would here remark that although for the sake of illustration
only one pair of corrugated rollers is shown in the Drawings, yet two
or more pairs of these rollers may be employed if preferred.
Having now described the nature and object of our said Inven- 3
tion for "Improvements in Machinery or Apparatus used for Breaking
Stone," together with the manner in which the same is to be or
may be performed or carried into practical effect, we wish it to be
understood that we claim as our Invention, the combination with a
"Blake's stone breaker" (or other similar machine used for breaking &
stone) of a pair (or pairs) of corrugated rollers, one roller of each pair

page_text: being corrugated longitudinally and the other circumferentially, sub-
stantially as and for the purposes herein-before described.
.
In witness whereof, we, the said John Robert Ord and Henry
Maddison, have hereunto set our hands and seals, the Sixteenth
day of December, in the year of our Lord One thousand eight
hundred and seventy-one.