Improved Hydraulic Intensifier.
Year: 1893

page_text: Date of Application, 11th Oct., 1893
Complete Specification Left, 4th July, 1894-Accepted, 4th Aug., 1894
PROVISIONAL SPECIFICATION.
Improved Hydraulic Intensifier.
I, JOHN CHARLES ETCHELLS, of Heaton Chapel, near Stockport, in the
County of Lancaster, Engineer, do hereby declare the nature of this invention to
be as follows:-
This invention is designed to provide an intensifier for use with hydraulic presses.
and other hydraulic apparatus where high pressures are employed in which a
single central pillar receives the whole of the strain or pressure and which.
will be more compact and more self-contained than many of those at present
in use.
Hitherto it has been customary to construct these intensifiers so that the strain.
or stress caused by the intensifying arrangement is transmitted from the internal
rain or cylinder to the external cylinder by means of two or more pillars connected
to the outside of the external cylinder.
This invention consists essentially in constructing the intensifier with a single-
pillar forming the centre of the apparatus placed in the smaller cylinder one end of
which forms the ram or piston therefor and the other is attached to the closed end
of the external cylinder.
Inside the external or large cylinder is placed a second or smaller moving
cylinder and ram combined which acts the part of a ram or piston to the external
cylinder. Attached to the closed end of the external cylinder is the central pillar
the other end of which forms the ram or piston for the smaller internal cylinder.
An inlet from the water maiu or source of pressure is provided in the external
cylinder and the interior of the smaller cylinder is connected with the cylinder
of the hydraulic press or apparatus in conjunction with which the intensifier works.
In this improved intensifier all strains are self contained and all moving and
fixed parts are concentric with the internal pillar.
The water (or other fluid) is prevented from passing in or out of the cylinders by
any except the appointed openings by means of the usual glands and packing.
Dated this 10th day of October 1893.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents..
COMPLETE SPECIFICATION.
Improved Hydraulic Intensifier.
I, JOHN CHARLES ETCHELLS, of Heaton Chapel, near Stockport, in the
County of Lancaster, Engineer, 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 :-
This invention is designed to provide an intensifier for use with hydraulic presses
and other hydraulic apparatus where high pressures are employed in which a
single central pillar receives the whole of the strain or pressure and which
will be more compact and more self-contained than many of those at present
in use.
Hitherto it has been customary to construct these intensifiers so that the strain or
stress caused by the intensifying arrangement is transmitted from the internal ram
Pri Q77

page_text: or cylinder to the external cylinder by means of two or more pillars connected to
the outside of the external cylinder.
This invention consists essentially in constructing the intensifier with a single
pillar placed in the centre of the apparatus through the smaller cylinder one end of
which forms or has attached to it the ram or piston of the internal cylinder and the
other is attached to the closed end of the external cylinder.
It will be fully described with reference to the accompanying drawings :-
Fig. 1. Longitudinal section.
Fig. 2. Transverse section on line x-x.
Fig. 3. Eud elevation partly in section on line y-y.
The external or large cylinder A is provided internally with a second smaller
cylinder B capable of moving to and fro therein. The internal cylinder B also acts
the part of a ram or piston to the external cylinder A.
Through the centre of both these cylinders A and B I place a pillar C one end c
of which is rigidly attached to the closed end a of the external cylinder A and the
other end c forms the ram or has attached to it the ram D for the smaller
internal cylinder B.
The central pillar C forins the only means whereby the stress or pressure caused
by the intensifying arrangement is transmitted from the internal ram or cylinder to
the external cylinder.
If the end c' does not itself form the ram for the small or internal cylinder the
ram D is mounted upon and concentric with the central pillar C.
An inlet pipe E from the water main or source of pressure is provided in the
external cylinder A and the interior of the smaller cylinder B is connected with
the cylinder of the hydraulic press or apparatus in conjunction with which the
intensifier works.
The connection with the internal or small cylinder B is preferably by means of a
port or water way ỗ drilled through the centre of the pillar C as shown. It will be
understood however that this outlet may be drilled through either end of the
pillar or direct into the cylinder B but I prefer the arrangement shown in
the drawings.
In this improved intensifier all strains are self-contained and all moving and fixed
parts are concentric with the internal pillar.
The water (or other fluid) is prevented from passing in or out of the cylinders by
any except the appointed openings by means of the usual glands and packing.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
:-
1. An hydraulic intensifier constructed with a single pillar placed in the centre of
the apparatus to bear the whole stress or pressure thereof, one end being attached
to the closed end of the external cylinder and the other end forming or carrying
concentrically the ram of the internal cylinder and provided with concentric glands
substantially as described.
2. An hydraulic intensifier having the several parts constructed and arranged in
combination substantially as described and shown.
Dated this 28th day of June 1894.
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.