IMPROVEMENTS IN MILLS OR CRUSHERS FOR GRINDING OR CRUSHING MINERALS AND OTHER SUBSTANCES, FOR MIXING MORTAR
Year: 1875

page_text: LETTERS PATENT to William Meese Ward, of Limerick Foundry,
Great Bridge, in the County of Stafford, Ironfounder, for the
Invention of "IMPROVEMENTS IN MILLS OR CRUSHERS FOR GRINDING OR
CRUSHING MINERALS AND OTHER SUBSTANCES, FOR MIXING MORTAR AND
Sealed the 14th September 1875, and dated the 31st March 1875.
PROVISIONAL SPECIFICATION left by the said William Meese Ward
at the Office of the Commissioners of Patents, with his Petition,
on the 31st March 1875.
I, WILLIAM MEESE WARD, of Limerick Foundry, Great Bridge, in
the County of Stafford, Ironfounder, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN MILLS OR CRUSHERS FOR GRINDING OR
CRUSHING MINERALS AND OTHER SUBSTANCES, FOR MIXING MORTAR AND CEMENT,
AND FOR OTHER LIKE PURPOSES, to be as follows:

page_text: construction is simplified and their action is made more efficient than
that of mills or crushers of the ordinary construction.
Instead of supporting the central shaft of the mill by means of
standards and a cross head extending above the tops of the rollers and
connecting the said standards as usual, I construct the said standards
of a height but little exceeding that of the spindles of the rollers, and for
the purpose of supporting the central shaft by which the rotating pan is
carried, I construct a horizontal frame around the rollers, the said frame
being supported at its opposite ends upon the standards, and carrying at
its middle the bearing in which the central shaft of the said rotating pan
works. The said horizontal frame follows generally the outline of the
two rollers and carries besides the central bearing described for the shaft
of the pan two pairs of slots, the said pairs of slots being situated respec-
tively on opposite sides of the two rollers. The said slots are slightly
greater in width than the flattened ends of the spindles of the rollers,
the ends of the said spindles being engaged in the said slots.
As the rotating pan travels under the rollers it gives motion thereto
in opposite directions, and as each of the said rollers has an independent
spindle the one can rise or fall independently of the other, and the great
strain and wear which is occasioned when the rollers work on one spindle
is avoided.
The horizontal frame described is provided with attachments for
scrapers for disturbing or stirring up the material under operation, and
has also provision for a pivot bar to carry a discharging trough.
In consequence of the absence of the ordinary standards and cross
head, mills and crushers made according to my Invention are much
lighter than ordinary mills or crushers, and the back standard usually
employed may be dispensed with in consequence of the reduced tendency
to oscillation in the machine.
Mills or crushers made according to my Invention are readily taken to
pieces and put together, and are consequently very convenient for transit.
They work with much greater ease than ordinary mills in consequence of
the independent spindles of the rollers herein-before referred to. Further,
they are especially adapted for using a discharging trough instead of
being emptied in the ordinary way by a shovel.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Meese Ward in the Great Seal Patent
Office on the 22nd September 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
MEESE WARD, of Limerick Foundry, Great Bridge, in the County of
Stafford, Ironfounder, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirty-first day of March, 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 suc-
cessors, give and grant unto me, the said William Meese Ward, Her
special license that I, the said William Meese Ward, my executors,
administrators, and assigns, or such others as I, the said William Mecse
Ward, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times there-
after 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 MILLS OR CRUSHERS FOR GRINDING OR CRUSHING MINERALS
AND OTHER SUBSTANCES, FOR MIXING MORTAR AND CEMENT, AND FOR OTHER LIKE
PURPOSES," upon the condition (amongst others) that I, the said
William Meese Ward, 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 William Meese Ward, do hereby
declare the nature of the said Invention, and in what manner the same

page_text: construction is simplified and their action is made more efficient than
that of mills or crushers of the ordinary construction.
Instead of supporting the central shaft of the mill by means of
standards and a cross head extending above the tops of the rollers and
connecting the said standards as usual, I construct the said standards of
a height but little exceeding that of the spindles of the rollers, and for
the purpose of supporting the central shaft by which the rotating pan is
carried I construct a horizontal frame around the rollers, the said frame
being supported at its opposite ends upon the standards and carrying at
its middle the bearing in which the central shaft of the said rotating pan
works. The said horizontal frame follows generally the outline of the
two rollers and carries besides the central bearing described for the shaft
of the pan two pairs of slots, the said pairs of slots being situated respec-
tively on opposite sides of the two rollers. The said slots are slightly
greater in width than the flattened ends of the spindles of the rollers,
the ends of the said spindles being engaged in the said slots.
As the rotating pan travels under the rollers it gives motion thereto in
opposite directions, and as cach of the said rollers has an independent
spindle the one can rise or fall independently of the other, and the great
strain and wear which is occasioned when the rollers work on one spindle
is avoided.
The horizontal frame described is provided with attachments for
scrapers for disturbing or stirring up the material under operation, and
has also provision for a pivot bar to carry a discharging trough.
I will now describe with reference to the accompanying Drawing the
manner in which my Invention may be performed.
Figure 1 represents in side elevation, Figure 2 in end clevation, and
Figure 3 in plan a mill or crusher constructed according to my Inven-
tion. The same letters of reference indicate the same parts in each
Figure.
a is the rotating pan of the mill or crusher turning on the vertical
shaft and driven as usual by the bevil wheel c gearing with the bevil
wheel d on the under side of the pan; c, e, are the independent rollers of
the mill working in the pan; f, f, g, g, and h, h, is the horizontal

page_text: frame of the mill, in which the upper part of the shaft 6 of the pan a is
supported, and in which the independent rollers e, e, work, the said hori-
zontal frame being supported by the standards i, i, fixed to the foundation
of the mill.
The shape of the horizontal frame is best seen in the plan, Figure 3,
and by an examination of which it will be seen that the said frame con-
sists essentially of two rectangular parts f, f, in which the rollers e, e,
work loosely a cross piece or bearing 9 (connecting the two parts f, f
together), in which the upper part of the shaft 6 of the pan a works, and
the end pieces h, h, which are bolted to the standards i, i. The rectan-
gular parts ff, of the frame follow the outline of the rollers e, e, and
each of the said parts f,f, has a pair of slots k, k, in it, in which slots the
spindles e, e, of the rollers e, e, are respectively engaged as represented.
The ends of the spindles e², e², which enter the slots k, k, are flattened
so that they cannot turn with the rollers. The spindles e², e², fit loosely
in the slots k, k, and are capable of rising or falling therein. By placing
the rollers e, e, upon separate spindles as represented they are capable of
motion independent of one another.
By an examination of the Drawing it will be seen that the height of
the standards i, i, supporting the horizontal frame is but little greater
than the spindles of the rollers. The parts f, f, of the horizontal frame
are furnished with the attachments 7, 1, for connecting the scrapers m to
the mill, the said scrapers stirring up or properly distributing the material
under operation in the pan a.
At the end of one of the rectangular
parts of the horizontal frame is a pivot bar p, to which a discharging
trough q is connected by the side arms p², p³.
The pivot bar p is best seen in Figure 2. The discharging trough q
oscillates upon the pivot bar p, and by its use the pan a may be readily
discharged of its contents.
When the discharging trough q is in the position represented in
Figure 1 the rotation of the pan a causes the ground material to rise in
the trough to a height a little below the level of the top of the pan. By
pressing upon the handle q² the discharging trough a turns on the pivot
bar p, and the handle end being now lower than the end of the trough
containing the material the said material slides down the trough towards

page_text: otherwise.
In consequence of the absence of the ordinary standards and cross
head, mills or crushers made according to my Invention are much lighter
than ordinary mills or crushers, and the back standard usually employed
may be dispensed with in consequence of the reduced tendency to
oscillation in the machine.
Mills or crushers made according to my Invention are readily taken to
pieces and put together, and are consequently very convenient for transit.
They work with much greater ease than ordinary mills in consequence ]
of the independent spindles of the rollers herein-before referred to.
Further, they are especially adapted for using a discharging trough
instead of being emptied in the ordinary way by a shovel.
Having now described the nature of my Invention and the manner
in which the same is to be performed, I wish it to be understood that ]
I do not limit myself to the precise details herein described and
illustrated, as the same may be varied without departing from the
nature of my Invention; but I claim as my Invention of improvements
in mills or crushers for grinding or crushing minerals and other sub-
stances, for mixing mortar and cement, and for other like purposes,–
-
First. Constructing the standards of the mill or crusher of a height a
little greater than that of the spindles of the rollers and supporting the
upper part of the central shaft of the rotating pan and maintaining the
position of the rollers by means of a horizontal frame carried by the said
short standards, substantially as and for the purposes herein-before
described and illustrated in the accompanying Drawing.
Secondly. Making the rollers of the mill or crusher work upon inde-
pendent spindles and making the said spindles work in slots in the hori
zontal frame in the manner herein-before described and illustrated in the
accompanying Drawing, whereby one roller can rise or fall independently
of the other.
Thirdly. The combination with the horizontal frame described of
attachments for scrapers for distributing the material in the rotating pan
as described and illustrated in the accompanying Drawing.
Lastly. The combination with the mill or crusher described of a dis-
charging trough, substantially as described and illustrated in the

page_text: accompanying Drawing, whereby the pan is emptied with great
facility.
In witness whereof, I, the said William Meese Ward, have
hereunto set my hand and seal, this Twentieth day of September,
in the year of our Lord One thousand eight hundred and seventy-
five.
Witness,
RICHARD SKERRETT,
Clerk to George Shaw,
Birmingham.
WILLIAM MEESE WARD. (L.S.)