Im- PROVEMENTS IN THE CONSTRUCTION OF MACHINERY FOR BREAKING AND CRUSHING SMANING Onze AWR ORDED AMOSTANICA
Year: 1875

page_text: LETTERS PATENT to George Bradley and Thomas Madderson, both of
Great Ayton, in the County of York, for the Invention of "Im-
PROVEMENTS IN THE CONSTRUCTION OF MACHINERY FOR BREAKING AND CRUSHING
SMANING Onze AWR ORDED AMOSTANICA "
PROVISIONAL SPECIFICATION left by the said George Bradley and
Thomas Madderson at the Office of the Commissioners of Patents,
with their Petition, on the 7th January 1875.
We, GEORGE BRADLEY and THOMAS MADDERSON, both of Great
Ayton, in the County of York, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN THE CONSTRUCTION OF MACHINERY FOR
BREAKING AND CRUSHING STONES, ORES, AND OTHER SUBSTANCES," to be as
follows:-
This Invention consists of certain improvements in the construction of
machines for breaking or crushing stones and other hard substances,
whereby that operation is performed in a more perfect manner than by
the machines bitherto in use.
According to this Invention a horizontal, rocking, or vibrating lever
is combined with two toggles, two moveable and two fixed jaws. The

page_text: horizontal, rocking, or vibrating lever is mounted on a cross shaft
between the two side frames of the machine, the cross shaft passing
through the centre of one end of the rocking lover, and which end is
made larger than the other end thereof and provided with a suitable face.
To the other end of the rocking or vibrating lever one end of a short 5
connecting rod is attached, the pin or centro upon which it works being
placed in an eccentric hole formed for its reception in the rocking lever,
the other end of the connecting rod being connected by an eccentric or
other suitable means to the main shaft of the machine. At the top and
bottom of the face of the rocking or vibrating lever an aperture is bored 1
out for the reception of the toggle seat which is formed with a round
notch to correspond with the rounded ends of the toggles.
The two sets of jaws are placed one above the other in front of the
horizontal rocking or vibrating lever, each of the moveable jaws being
provided at their rear with a toggle seat corresponding to those formed 1
in the rocking or vibrating lever, and connected to the latter by means
of a toggle, the toggle connecting the upper moveable jaw with the
upper portion of the head of the rocking or vibrating lever being of
greater length than that connected with the lower pair of jaws.
When motion is given to the main shaft of the machine the horizontal 2
lever is caused to rock or vibrate, thus alternately actuating the upper
and lower moveable jaws, the material under treatment passing from the
upper pair of jaws to the lower which are set closer to one another than
the former.
For convenience of adjusting the width of the space between the 2
moveable and fixed jaws the ends of the cross shaft on which the hori-
zontal lever rocks or vibrates aro fitted with slide blocks which work in
suitable slots formed in the side frame of the machine.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said George Bradley and Thomas Madderson in the 80
Great Seal Patent Office on the 7th July 1875.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventh day of January, in the year of
our Lord One thousand eight hundred and seventy-five, in the thirty-
eighth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said George Bradley and Thomas
Madderson, Her special licence that we, the said George Bradley, and
Thomas Madderson, our executors, administrators, and assigns, or such
others as we, the said George Bradley and Thomas Madderson, our
executors, administrators, and assigns, should at any time agree with,
and no others, 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 THE CONSTRUCTION OF MACHINERY FOR BREAKING AND
3 CRUSHING STONES, ORES, AND OTHER SUBSTANCES," upon the condition
(amongst others) that we, the said George Bradley and Thomas
Madderson, 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,
O and in what manner the samo 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 George Bradley and Thomas
5 Madderson, do hereby declare the nature of our said Invention, and in
what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement, reference being had
to the accompanying Drawing and to the letters marked thereon, that is
to say:
Our said Invention consists in certain improvements in the con-
struction of machines for breaking or crushing stones and other hard
substances whereby that operation is performed in a more perfect manner
than by the machines hitherto in use.
According to this Invention a rocking or vibrating lever is combined
5 with two toggles and two moveable and two fixed jaws. The horizontal,
rocking, or vibrating lever is mounted on a cross shaft supported by the
two side frames of the machine, and which cross shaft passes through

page_text: the centre of the front end or head of the rocking lever. The front end
or head of the rocking lever is made larger than the other end thereof
and provided with a suitable face. The face of the head of the rocking
lever is provided with two toggle seats, one at the top and one at the
bottom, and which toggle seats are formed with a round notch to corrc- t
spond with the rounded ends of the toggles. To the end of the rocking
or vibrating lever opposite to the head one end of a short connecting rod
is attached by means of a pin working eccentrically in a hole formed therein
for its reception, the other end of the connecting rod being connected by
an eccentric or other suitable means to the main shaft of the machine. ]
Two sets of jaws are placed one above the other in front of the head
of the horizontal rocking or vibrating lever, each of the moveable jaws
being provided at their rear with a toggle seat corresponding to those in
the face of the rocking or vibrating lever. The two moveable jaws aro
connected to the rocking or vibrating lever by two toggles, that con- 1
necting the upper moveable jaw with the upper portion of the head of
the rocking or vibrating lever being of greater length than the lower
one.
Upon motion being given to the main shaft of the machine the hori-
zontal lever is caused to rock or vibrate upon the cross shaft passing
through the head thereof, thus alternately actuating the upper and lower
moveable jaws. The material to be acted upon is placed between tho
upper pair of jaws, and when acted upon by them to their fullest extent
it passes to the lower pair of jaws which are set closer to one another,
and there reduced to the requisite degree of fineness.
For convenience of adjusting the width of the space between the
moveable and fixed jaws the ends of the cross shaft on which the lever
rocks are fitted with slide blocks which work in suitable slots formed in
the side frame of the machine.
We will now proceed to refer to the accompanying Drawing, from
which the nature of our said Invention will be moro clearly understood.
A, A, is the frame of the machine; B, the horizontal rocking lever;
C, the enlarged head thereof with the cross shaft c passing through the
same; c¹and c" being respectively the upper and lower toggle seats in
the face thereof. D is the smaller end of the horizontal lever B; E, the
connecting rod; e, being the main shaft of the machine actuating the
connecting rod E by means of an eccentric; F is the fly wheel; G is

page_text: the upper moveable jaw which is kept in-position-by-the-springg; His
the upper fixed jaw; I, J, are. respectively the lower moveable and
fixed jaws, the former, being kept in position by the spring i; and K
and I are respectively the upper and lower toggles.
•
Having thus described and ascertained the nature of our said Inven-
tion, and in what manner the same is to be performed, we would observe
in conclusion that we do not claim the soveral parts separate and apart
from each other, but what we consider novel and original and therefore
claim as constituting the Invention secured to us by the herein-before in
O part recited Letters Patent is, the combination and arrangement of parts
and mechanism in the manner and for the purposes herein-before set
forth and described, or any mère modifications thereof.
In witness whereof, we, the said George Bradley and Thomas
Madderson, have hereunto set our hands and seals, this First day
of July, in the year of our Lord One thousand eight hundred and
Witness,
(L.S.)
GEORGE BRADLEY.
THOMAS MADDERSON. (L.S.)
R. S. MORDAUNT VAUGHAN, '
Patent Agent,
Darlington.
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