IMPROVEMENTS IN MORTAR MILLS, APPLICABLE ALSO TO GRINDING OTHER SUBSTANCES
Year: 1865

page_text: LETTERS PATENT to John Raines, of Dukinfield, in the County of
Chester, Machinist, for the Invention of "IMPROVEMENTS IN MORTAR MILLS,
APPLICABLE ALSO TO GRINDING OTHER SUBSTANCES."
Sealed the 25th July 1865, and dated the 28th January 1865.
PROVISIONAL SPECIFICATION left by the said John Raines at the Office.
of the Commissioners of Patents, with his Petition, on the 28th January
1865.
I, JOHN RAINES, of Dukinfield, in the County of Chester, Machinist, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN MORTAR MILIS,
APPLICABLE ALSO TO GRINDING OTHER SUBSTANCES," to be as follows:-
My Invention consists, firstly, in causing the runners of mortar mills to be
pressed upon the bed thereof by a spring or springs. In applying my Invention
I mount the arm which carries the runners so as to be capable of sliding upon
the driving shaft, and upon this arm I place an india-rubber or other spring
which has an abutment at the other end against a part fixed to the shaft, the

page_text: spring being compressed by a set screw. Secondly, my Invention consists in
mounting the mortar or other such mill upon a framework, which also carries
a hoisting apparatus, and an engine for driving the same, the whole constituting
an apparatus complete in itself.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Raines in the Great Seal Patent Office on the 28th
July 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
RAINES, of Dukinfield, in the County of Chester, Machinist, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-eighth day of January, in the year of our
Lord One thousand eight hundred and sixty-five, in the twenty-ninth year
of Her reign, did, for Herself, Her heirs and successors, give and grant
unto me, the said John Raines, Her special license that I, the said John
Raines, my executors, administrators, and assigns, or such others as I, the
said John Raines, 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 "IMPROVE-
MENTS IN MORTAR MILLS, APPLICABLE ALSO TO GRINDING OTHER SUBSTANCES,"
upon the condition, amongst others, that I, the said John Raines, by an
instrument in writing under my band and seal, 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 Jobn Raines, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement and accompanying Drawings, that is to say:-
My Invention consists, firstly, in causing the runners of mortar or other
such mills to be pressed upon the bed thereof by a spring or springs; secondly,
in mounting the mill upon a framework which also carries a hoisting appa-
ratus and an engine for driving the same, the whole constituting an apparatus
complete in itself.

page_text: Fig. 1 represents the two portions of my Invention combined in side
clevation, and Fig. 2 is a plan view thereof. The framework is shewn at a,
mounted upon wheels b, by which the apparatus may be moved to any required
situation. Upon this framework is mounted the steam boiler c, to the side of
which is bolted the steam cylinder d. The piston rod is at e, communicating
motion by means of the crank f to the main shaft g, which has a fly wheel at h.
The ordinary governor and pump are also shewn in the Drawing, the former at i,
and the latter at k. Upon the main shaft is a bevil pinion l, taking into a
wheel m, fixed to an upright shaft n, mounted in bearings o, carried by the
framework. To the upright shaft n is attached a box p, through which a
shaft q, carrying the runners r, passes. The shaft 9 is formed square at that
part which passes through the box p, and is capable of moving upward or
downward in the said box, but it is prevented from moving horizontally therein
by collars 8. Resting upon the shaft 7 is a piece of wood t, above that a
block of india-rubber u, on the top of which is a metal plate v, capable of
being forced downward by a screw w, working in the top of the box p.
By turning this screw the said metal plate, together with the block of india-
rubber u is forced downward, and any desired pressure may thus be exerted
upon the runners 2. The shaft n is prevented from rising by a collar n*
attached thereto. To the box p is attached a scraper x, for forcing the mortar
or other material inward, and at y is another scraper for forcing it outward.
Attached to the bed plate a is a frame 1 (Fig. 2) in which is mounted a shaft
2, carrying a friction wheel 3, working in contact with another friction wheel
4, mounted upon the main shaft g. At the other end of the shaft 2 is a
pinion 5 driving a wheel 6, upon the axis of a lifting drum 7, the said parts
constituting a hoisting apparatus. The shaft 2 I mount in a lever 8, as
shewn in the detached view, Fig. 3, by turning this lever therefore upon its
centre of motion 9 the friction wheel 3 may be lifted from the driving wheel 4,
so as to remove the lifting drum 7 out of gear, the said shaft 2 being suf-
ficiently slack in its fixed bearing to admit of a slight motion at its other end.
Above the friction wheel 3 I place a curved disc 10, against which the said
wheel arrives when lifted out of gear, and thus a brake is effected. During
the hoisting operation the wheel 3 is kept in contact with the wheel 4 by
pressure put upon the lever 8.
Having thus described and ascertained the nature of my said Invention,
and the manner of carrying the same into effect, I desire it to be understood
that I claim, as secured to me under the above in part recited Letters Patent,-
Firstly, regulating the pressuro of the runners by an elestic substance.
Secondly, mounting the mill upon a framework, which also carries a hoisting

page_text: apparatus, and an engine for driving the same, the whole constituting an
apparatus complete in itself.
In witness whereof, I, tho said John Raines, have hereunto set my
hand and seal, this Twenty-seventh day of July, in the year of our
Lord One thousand eight hundred and sixty-five.
JOHN RAINES. (L.S.)