other Purposes Requiring Pressure.
Year: 1887

page_text: This Specification was, upon the 4th day of September 1888, Amended under
Sections 18 to 21 of the Patents, Designs, and Trade Marks Act, 1883.
or for other Purposes Requiring Pressure.
We THOMAS CHARLES ROBERTS-HORSFIELD Engineer of 11 Upper Tollington
Road Islington in the County of Middlesex and ROBERT PORTER of 18 Beaulieu
Villas Finsbury Park also in the County of Middlesex Merchant do hereby declare
the nature of this invention to be as follows:-
That heretofore the process of mining Coal has been performed by blasting and
other methods more or less dangerous to the miners.
In such processes, as for instance in the course of coal mining, it is a common
practice to ent away a portion of coal into a wedge shaped opening under the mass
of Coal intended to be loosened, and near the top of such mass to bore a series of holes
in which is placed the blasting inaterial.
So far as cutting and boring the above mentioned holes are concerned we do not
claim any protection in this our invention, but from this point we claim protection
for Hydraulic Press as hereinafter described.
Our Invention consists of a metal cylinder divided longitudinally into two parts.
The larger of these portions has a cavity passing longitudinally through its length
and placed transversely as far as this cavity is concerned and in communication
therewith a series of holes in which are placed to work accurately and freely rams
made of suitable metal. One end of these rams being in communication with the
longitudinal cavity, the remaining end touches the other portion of the cylinder, and
at this end of the ram we place an hydraulic leather properly fitted to serve as an
air tight joint.

page_text: On the admission of water or other hydraulic medium under pressure to the cavity,
the pressure is applied on the ends of the rams in communication therewith. This
pressure forces them outwards and so exerts itself upon the free portion of the cylinder,
which is prevented from moving laterally by suitable guides, which in its turn can
apply the pressure to the surface of the coal, or in any other way it is desired.
We claim in this our application all such variations of our said invention in the
shape of the parts or variation of detail as properly come within the scope of our said
invention.
HARE & Co.,
31, Essex Street, Strand, W.C.,
Agents to the said Applicants.
or for other Purposes Requiring Pressure.
We THOMAS CHARLES ROBERTS HORSFIELD Engineer of 11 Upper Lottington
Tollington Road Islington in the County of Middlesex and ROBERT PORTER of
18 Beaulieu Villas Finsbury Park also in the County of Middlesex Merchant do
hereby declare the nature of this invention and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:
That heretofore the process of mining has been performed by blasting and other
methods more or less dangerous to miners.
In such processes as for instance in the course of coal mining it is a common
practice to cut away a portion of coal into a wedge shaped opening under the mass of
coal intended to be loosened and near the top of such mass to bore a series of holes in
which is placed the blasting material.
So far as cutting and boring the above mentioned holes are concerned we do not
claim any protection in this our invention-Attempts have also been made to loosen
con! and other minerals by Hydraulic means but not in the way claimed in this
application. We are aware that Hydraulic Presses for mining purposes have been
constructed before this, but they differ entirely in their inner construction and in the most
essential parts, as, will be shown hereafter.
Our invention consists of a strong metallic body (preferably cylindrical in shape
but not of necessity so) the construction of which can be varied to suit the purposes
for which it is used.

page_text: In one form of its application it is cylindrical in shape divided longitudinally into
two parts. The larger of these parts has a cavity passing longitudinally through it.
Placed transversely as far as this cavity is concerned and in communication there-
with is a series of holes in which are placed to work accurately and freely rams of
steel or other suitable metal.
One end of these rams being in communication with the longitudinal cavity by
means of entrance holes--the remaining end touches the other portion of the
cylinder At that end of the holes nearest to the longitudinal cavity are placed
hydraulic leathers properly fitted to make an air a water tight joint.
On the admission of water or other hydraulic medium under pressure to the cavity
the pressure is communicated by suitable entrance holes---to the ends tops of the
rams The pressure forces them outwards and so exerts itself upon the free portion of
the cylinder which is prevented from moving laterally by suitable guides--and
which in its turn can apply the pressure to the surface of the coal or in any other way
it is desired.
Another application of our invention is to keep the cylindrical body whole and not
make it in 2 parts-The construction of the cavity and holes, rams and hydraulic
leathers is practically the same as hereinbefore explained but in this case the rams act
directly upon the surface of the coal or other substance to be operated upon.
It is not essential in such-application for the rams to be on any side-or only-on-one
side of the erlindrient-body, their-number-und-position-being-determined-by-the
eircumstances of the ease. The number of rams may be from 6 to 12-we do not
restrict ourselves to their number and size.
It will be seen on the accompanying drawings that the longitudinal cavity is so
made that by removing the serews at either end screw-b-and the steel tube, which is
screwed in at the other end, it can be readily cleaned Its position also with reference
to-the-rams-is-such that should the aperture to any particular ram be choked up it
will not interfere with the action of the hydraulic fluid on the remaining rums.-In
previous presses the Rams obstructed the water passage and each ram or pair of rams in
presses where opposing rams were used, had to be moved out of the waterway before the
second could be acted on properly, with the result, that the first ram or pair of rams had
There was
begun their stroke, before the last ram or pair of rams were actuated on.
therefore a great waste of pressure and a great strain on the guides, where a segment was
used, nor could a simultaneous action of the rams be obtained. Sometimes it happened
that a ram or pair of Rams could not be moved out of the water passage, if they had got
rusty or were fixed by dirt or any other cause, in such cases the press was rendered useless.
Our improved waterway with the little holes, through which the fluid enters on the
top of the rum, secures a combined and simultaneous action of the rams and should one
of the rams get fixed in its cell, this will not prevent the other rams from acting. The
principal advantage in our improved constructions is that through the combined
simultaneous action of the Rams much less Hydraulic pressure is required, to obtain a
far greater power than in other presses heretofore constructed.
Near to the exterior openings of the holes in which the rams work we make an
escape hole which as will be seen permits the outflow of the hydraulic fluid when
sufficient pressure has been exerted upon the rams and it is desired not to force them
further.
In the accompanying drawings identical parts are marked with identical letters :-
Fig. 1 and 2 are front and end elevations of the ram press where the cylinder is
divided.
3 & 4 are front and end sectional elevations of the same.
5,6&are views where the cylindrical form is kept whole and the ram made to
press direct against the coal.
3 & 0 are views where the rams-are-used-on-opposite sides of the cylinder.
a-the body of the press-- the longitudinal cavity-e the rams-d the hydraulic
leather-e the escape hole- the guides-g the segment where such is used.-s entrance
hole for the fluid to the tops of the ram c.-In carrying out our invention it is best to
insert the press in such a manner in the borehole that the Rams move upwards but it will

page_text: act equally well if the Rams are working downwards or sidewards should the holing have
been done at the side. This press like previous ones may receive the hydraulic pressure
| from any suitable forcepump.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed + we declare that what
we claim is as new is
Improvements in :—
+. The construction of a hydraulic press by conveniently placed longitudinal cavity,
separate necess for the quid-to-ench hydraulic ram and esenpe--holes for mining
purposes substantially as herein described with reference to the annexed illustrative
drawing, having a straight waterway b, which communicates with the rams-c-by means
of little entrance holes--and by which arrangement separate access to each ram and
the combined simultaneous action of the Rams is obtained.
2. The adaption of same to mining purposes or for other purposes-requiring
pressure:
3. All such variation of our said Invention in shape of the parts or variation in
detail as properly come within the scope of our Invention.
TIDZ SHA
MATCH
HARE & Co.,
Agents to the said Applicants.
HARE & Co.,
Agents to the said Applicants.

page_text: Date of Application, 21st Oct., 1887
Complete Left, 8th Mar., 1888
Complete Accepted, 13th Apr., 1888
We THOMAS CHARLES ROBERTS-HORSFIELD Engineer of 11 Upper Tollington
Road Islington in the County of Middlesex and ROBERT PORTER of 18 Beaulieu
Villas Finsbury Park also in the County of Middlesex Merchant do hereby declare
the nature of this invention to be as follows:-
That heretofore the process of mining Coal has been performed by blasting and
other methods more or less dangerous to the miners.
In such processes, as for instance in the course of coal mining, it is a common
practice to cut away a portion of coal into a wedge shaped opening under the mass
of Coal intended to be loosened, and near the top of such mass to bore a series of holes
in which is placed the blasting material.
So far as cutting and boring the above mentioned holes are concerned we do not
claim any protection in this our invention, but from this point we claim protection
for Hydraulic Press as hereinafter described.
Our Invention consists of a metal cylinder divided longitudinally into two parts.
The larger of these portions has a cavity passing longitudinally through its length
and placed transversely as far as this cavity is concerned and in communication
therewith a series of holes in which are placed to work accurately and freely rams
made of suitable metal. One end of these rams being in communication with the
longitudinal cavity, the remaining end touches the other portion of the cylinder, and
at this end of the ram we place an hydraulic leather properly fitted to serve as an
air tight joint.

page_text: On the admission of water or other hydraulic medium under pressure to the cavity,
the pressure is applied on the ends of the rams in communication therewith. This
pressure forces them outwards and so exerts itself upon the free portion of the cylinder,
which is prevented from moving laterally by suitable guides, which in its turn can
apply the pressure to the surface of the coal, or in any other way it is desired.
We claim in this our application all such variations of our said invention in the
shape of the parts or variation of detail as properly come within the scope of our said
invention.
Dated this 20th day of Ontahan 1007
HART & Co.,
31, Essex Street, Strand, W.C.,
Agents to the said Applicants.

page_text: or for other Purposes Requiring Pressure.
We THOMAS CHARLES ROBERTS HORSFIELD Engineer of 11 Upper Lottington.
Road Islington in the County of Middlesex and ROBERT PORTER of 18 Beaulieu
Villas Finsbury Park also in the County of Middlesex Merchant do hereby declare the.
nature of this invention and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
That heretofore the process of mining has been performed by blasting and other
methods more or less dangerous to miners.
In such processes as for instance in the course of coal mining it is a common
practice to cut away a portion of coal into a wedge shaped opening under the mass of
coal intended to be loosened and near the top of such mass to bore a series of holes in
which is placed the blasting material.
So far as cutting and boring the above mentioned holes are concerned we do not
claim any protection in this our invention-Attempts have also been made to loosen
coal and other minerals by Hydraulic means but not in the way claimed in this
application.
Our invention consists of a strong metallic body (preferably cylindrical in shape
but not of necessity so) the construction of which can be varied to suit the purposes
for which it is used.
In one form of its application it is cylindrical in shape divided longitudinally into
two parts. The larger of these parts has a cavity passing longitudinally through it.
Placed transversely as far as this cavity is concerned and in communication there-
with is a series of holes in which are placed to work accurately and freely rams of
steel or other suitable metal.
One end of these rams being in communication with the longitudinal cavity the
remaining end touches the other portion of the cylinder-At that end of the holes
nearest to the longitudinal cavity are placed hydraulic leathers properly fitted to make
an air tight joint.
On the admission of water or other hydraulic medium under pressure to the cavity
the pressure is communicated by suitable entrance holes to the ends of the rains-The
pressure forces them outwards and so exerts itself upon the free portion of the cylinder
which is prevented from moving laterally by suitable guides and which in its turn can
apply the pressure to the surface of the coal or in any other way it is desired.
Another application of our invention is to keep the cylindrical body whole and not
make it in 2 parts-The construction of the cavity and holes, rams and hydraulic
leathers is practically the same as herein before explained but in this case the rams act
directly upon the surface of the coal or other substance to be operated upon.

page_text: It is not essential in such application for the rams to be on any side or only on one
side of the cylindrical body, their number and position being determined by the
circumstances of the case.
It will be seen on the accompanying drawings that the longitudinal cavity is so
made that by removing the screws at either end it can be readily cleaned-Its position
also with reference to the rams is such that should the aperture to any particular ram
be choked up it will not interfere with the action of the hydraulic fluid on the remaining
rains.
Near to the exterior openings of the holes in which the rams work we make an
escape hole which as will be seen permits the outflow of the hydraulic fluid when
sufficient pressure has been exerted upon the rams and it is desired not to force them
further.
In the accompanying drawings identical parts are marked with identical lotters :—
Fig. 1 and 2 are front and end elevations of the ram where the cylinder is
divided.
3 & 4 are front and end sectional elevations of the same.
5, 6 & 7 are views where the cylindrical form is kept whole and the ram made to
press direct against the coal.
8 & 9 are views where the rams are used on opposite sides of the cylinder.
a-the body of the press the longitudinal cavity-c the rams-d the hydraulic
leather the escape hole-f the guides-g the segment where such is usod.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declaro that what
I claim is
Improvements in :-
1. The construction of a hydraulic press by conveniently placed longitudinal cavity,
separate access for the fluid to each hydraulic ram and escape holes.
2. The adaption of same to mining purposes or for other purposes requiring
pressure.
3. All such variation of our said Invention in shape of the parts or variation in
detail as properly come within the scope of our Invention.
Dated this 5th day of March 1888. .
HART & Co.,
Agents to the said Applicants.