IMPROVEMENTS IN MACHINERY FOR BREAKING STONES AND CRUSHING ORES AND OTHER SUBSTANCES
Year: 1866

page_text: LETTERS PATENT to James Frost, of Dudley, in the County of Worcester,
Surveyor and Quarry Owner, for the Invention of "IMPROVEMENTS IN
MACHINERY FOR BREAKING STONES AND CRUSHING ORES AND OTHER
SUBSTANCES."
Sealed the 6th October 1866, and dated the 11th April 1866.
PROVISIONAL SPECIFICATION left by the said James Frost at the
Office of the Commissioners of Patents, with his Petition, on the
11th April 1866.
I, JAMES FROST, of Dudley, in the County of Worcester, Surveyor and
Quarry Owner, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN MACHINERY FOR BREAKING STONES AND CRUSHING ORES AND
OTHER SUBSTANCES," to be as follows:-
My improved machinery consists of a cam or crank fixed to a fly wheel
shaft which is turned round by steam or other power. This cam or crank
gives an oscillating motion to a vertical lever, the lower end of which is con-
nected by links to the lower end of another lever, to the upper end of which
is cast or fixed the press block; facing the press block is a steel plate or a chilled
cast-iron plate, which is fixed to the framing of the machine. The press block
and the chilled plate are ribbed, and they are placed at an angle to each
other with the wider part upwards. The stones, ores, or other substances to
be broken or crushed are placed between the chilled plate and the press block,
consequently when the machine is at work the forward motion of the press

page_text: block reduces the lumps of stone or other substance into fragments, which
descending by their own gravity are again reduced at the next advance of the
press block, and finally drop down when the fragments are brought to the
size required. The size of the ribs on the chilled plate and press block, and
the distance between them, can be regulated according to the size of the
fragments required.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said James Frost in the Great Seal Patent Office on the 10th
October 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
FROST, of Dudley, in the County of Worcester, Surveyor and Quarry Owner,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eleventh day of April, in the year of our Lord
One thousand eight hundred and sixty-six, in the twenty-ninth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said James Frost, Her special license that I, the said James Frost,
my executors, administrators, and assigns, or such others as I, the said
James Frost, my 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 "IMPROVE-
MENTS IN MACHINERY FOR BREAKING STONES AND CRUSHING ORES AND OTHER
SUBSTANCES," upon the condition (amongst others) that I, the said James
Frost, my executors or administrators, by an instrument in writing under
my, 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 I, the said James Frost, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement (that is to say) :-
My improved machinery consists of a cam or crank fixed to a fly wheel

page_text: shaft which is turned round by steam or other power. This cam or crank
gives an oscillating motion to a vertical lever, the lower end of which is con-
nected by links to the lower end of another lever, to the upper end of which
is fixed the press block; facing the press block is a steel plate or chilled cast-
iron plate, which is dovetailed into the framing of the machine.
And in order that my Invention may be fully understood and readily carried
into operation, I will proceed to describe the accompanying Sheet of Drawings,
reference being had to the figures and letters marked thereon.
Figure 1 is an elevation in perspective of my improved machinery for
breaking stones and crushing ores and other substances; Figure 2 is an
elevation in section of the same.
a is a cam or crank on the driving shaft b, which is turned round by steam
or other power, and is provided with one or two fly wheels to give the
requisite momentum. The crank a is connected by the connecting rod c to
the upper end of the vertical lever d, which vibrates upon the stud or shaft e;
the lower end of the lever d is connected by the links f to the lever g vibrating
on the fulcrum stud or shaft h. To the lever g is fixed the press block i,
which slides in, and can be replaced from time to time when required.
Facing the press block i is the plate j, which is dovetailed into the framing of
the machine. The press block i and the plate j are made of steel or of cbilled
cast iron, and their surfaces are ribbed with V-shaped projections; they are
placed at an angle to each other with the wider part upwards. The stones,
ores, or other substances to be broken or crushed are placed Letween the
plate j and the press block i, consequently when the machine is at work the
forward motion of the press block reduces the lumps of stone or other sub-
stance into fragments, which descending by their own gravity are again
reduced at the next advance of the press block, and finally drop down when
the fragments are brought to the size required. The size of the ribs on the
plate and press block i may be varied as required, as they are totally distinct
from the machine and can easily be replaced by others when broken or
injured, and the distance between them can be regulated by lengthening or
shortening the wrought-iron links f according to the size of the fragments
required. I wish to remark here that the links f are made weaker than the
other parts of the machine, so that when any undue strain occurs they give
way and thus prevent accidents.
Having thus stated the nature of my Invention, and described the manner
of performing the same, I wish it to be understood that I make no claim to
the ribbed plates i and j, as similar plates have before been used for breaking
stones and crushing ores; but what I do claim is the improved combination

page_text: of the parts shewn and described for giving a to-and-fro motion to the lever
to which the pressing block is cast or attached.
In witness whereof, I, the said James Frost, bave hereto set my hand
and seal, this Tenth day of October, One thousand eight hundred and
sixty-six.
JAMES FROST. (L.S.)