AN IMPROVED METHOD OF REDUCING CONCUSSION AND VIBRATION OF MILLSTONES IN THEIR REVOLUTIONS
Year: 1875

page_text: LETTERS PATENT to Daniel Bate, Millwright, Compton, in the
County of Stafford, and Thomas Mosely Bryan, Miller, Trysul,
in the County of Stafford, for the Invention of "AN IMPROVED
METHOD OF REDUCING CONCUSSION AND VIBRATION OF MILLSTONES IN THEIR
REVOLUTIONS"
PROVISIONAL SPECIFICATION left by the said Daniel Bate and
-
Thomas Mosely Bryan at the Office of the Commissioners of
Patents, with their Petition, on the 10th December 1875.
We, DANIEL BATE, Millwright, Compton, in the County of Stafford,
and THOMAS MOSELEY BRYAN, Miller, Trysul, in the County of
Stafford, do hereby declare the nature of the said Invention for “AN
IMPROVED METHOD OF REDUCING CONCUSSION AND VIBRATION OF MILLSTONES IN
THEIR REVOLUTIONS," to be as follows:-
The object of our Invention is to enable the revolving millstone to
work more steadily and smoothly, to maintain its equilibrium, and

page_text: remedy the great defect of backlashing, vibration, and concussion,
which has been generally experienced in the working of millstones set
in the ordinary way with the iron driver and bow, likewise the universal
driver; and which defect has often been the cause of the stripping or
tearing off the gear or cogs of the wheels, resulting in serious loss,
expense, and delay of work. This defect we remedy by the application
of vulcanized india-rubber, or any semi-elastic material, or wood to the
iron drivers or bows in the form of a plate or plates, block or blocks, or
buffers, attached to the driving irons with pins, bolts, and nuts. We
introduce a copper, iron, or metal plate on the side of the buffer, against
which the bow presses to drive the millstone. These buffers and plates
we apply in any form, size, and substance, as best suited to the size,
· position, and location of the buffers, so that the bow in the millstone in
its revolution shall press towards or against the buffers fixed in the
driver, and thereby check the jerk, jarr, vibration, and concussion,
hitherto the cause of great damage and loss.
The following Drawings and letters of reference illustrate the position
and location of the buffers introduced by this Invention upon the bow
and driver.
Fig. 1, a perspective view of the iron driver. a, a, the rubber, semi-
elastic, or wood buffers; b, b, the metal plates; c, c, the iron bolts,
which pass through the plates and buffers and fix them to the iron
driver.
Fig. 2, a perspective view of the iron bow. a, a, the rubber, semi-
elastic, or wood buffer; b, b, the metal plates; c, c, the iron bolts,
which pass through the buffers and plates and fix them to the sides of
the iron bow; d, d, the ends of the bow, which are fixed in the body of
the millstone..
Fig. 3, plan of the iron bow; shewing the location of the buffers a, a,
and bolts c, c.
Fig. 4, horizontal cross section of the upper millstone, the iron bow,
and the iron driver at the parts g, g, of the bow and driver. a, a, rubber
Semi-elastic, or wood buffer; b, b, metal plates; f, f, iron driver; d, d,
iron bow, the ends of which are fixed on the body of the upper mill-
stone h, h,.h.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Daniel Bate and Thomas Moseley Bryan in the
Great Seal Patent Office on the 7th June 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, DANIEL
BATE, Millwright, Compton, in the County of Stafford, and THOMAS
MOSELEY BRYAN, Miller, Trysull, in the County of Stafford, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Tenth day of December, in the
year of our Lord One thousand eight hundred and seventy-five, in the
thirty-ninth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto us, the said Daniel Bate and Thomas
Moseley Bryan, Her special licence that we, the said Daniel Bate and
Thomas Moseley Bryan, our executors, administrators, and assigns, or
such others as we, the said Daniel Bate and Thomas Moseley Bryan,
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
"AN IMPROVED METHOD OF REDUCING CONCUSSION AND VIBRATION OF MILLSTONES
IN THEIR REVOLUTIONS," upon the condition (amongst others) that we,
the said Daniel Bate and Thomas Moseley Bryan, 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 Daniel Bate and Thomas Moseley
Bryan, 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:-
The object of our Invention is to enable the revolving millstone to
work more steadily and smoothly, to maintain its equilibrium, and
remedy the great defect of backlashing, vibration, and concussion,

page_text: :
which has been generally experienced in the working of millstones set
in the ordinary way with the iron driver and bow, likewise the universal
driver; and which defect has often been the cause of the stripping or
tearing off the gear or cogs of the wheels, resulting in serious loss,
expense, and delay of work. This defect we remedy by the application
of vulcanized india-rubber sheet or sheets, made either with or without
a canvas, wire gauze, or any other material, applied as an insertion or
¨layer or layers between the two surfaces of the india-rubber; or we
apply any semi-elastic material or wood to the iron drivers or bows in
the form of a plate or plates, block or blocks, or buffers, attached to
the driving irons, with pins, bolts, and nuts. We introduce a copper,
iron, or metal plate on the side of the buffer, against which the bow
-presses to drive the millstone. These buffers and plates we apply in
any form, size, and substance, as best suited to the size, position, and
location of the buffers, so that the bow in the millstone in its revolution
shall press.towards or against the buffers fixed in the driver, and thereby
check the jerk, jar, vibration, and concussion, hitherto so objectionable,
and the cause of great and frequent damage and loss.
In order that our said Invention, and the manner of carrying the
same into effect, may be fully understood we now proceed to describe
it by the Drawings annexed.
Figure 1 is a perspective view of the iron driver, shewing the position
of the buffers, plates, and bolts.. The letters a, a, shew the position and
location of the rubber buffer, semi-elastic or wood; b, b, metal plates;
c, c, the iron bolts which pass through the plates and buffers and fix
them to the iron driver.
Figure 2 is a perspective view of the iron bow, illustrating the
location of the buffers and plates when applied to the bow. a, a, shew
the place of the buffer, elastic or semi-elastic; b, b, metal plates; c, c,
the iron bolts or pins, which pass through the buffers and plates and
fix them to the sides of the iron bow; d, d, the ends of the bow, which
are fixed in the body of the millstone.
Figure 3 a horizontal cross section of the driver, bow, and millstone
when fixed for grinding. a, a, elastic buffer; b, b, metal plate; d, d,
the ends of the bow fixed in the millstone; f. f, the iron driver; h, h,
the millstone; i, i, the iron hoop,

page_text: Having thus fully described the utility, object, and nature of our
Invention, and the manner of applying the same to millstones, we claim
as our Invention the fixing of clastic, semi-elastic, or wood buffers,
metal plates, pins, or bolts, either to the driver or to the bow, as we
have here described and shewn in the Drawings, so that the buffers
shall receive the pressure or force of the millstone in its revolutions.
In witness whereof, we, the said. Daniel Bate and Thomas Moseley
Bryan, have hereunto set our hands and seals, this Fifth day
of June, in the year of our Lord One thousand eight hundred
and seventy-six.