AN IMPROVEMENT IN HYDRAULIC PRESSES
Year: 1858

page_text: LETTERS PATENT to James Tangye, of Birmingham, in the County of
Warwick, Machinist, for the Invention of "AN IMPROVEMENT IN
HYDRAULIC PRESSES."
Sealed the 16th April 1859, and dated the 27th November 1858.
PROVISIONAL SPECIFICATION left by the said James Tangye at the
Office of the Commissioners of Patents, with his Petition, on the
27th November 1858.
I, JAMES TANGYE, of Birmingham, in the County of Warwick, Machinist,
do hereby declare the nature of the said Invention for "AN IMPROVEMENT
IN HYDRAULIC PRESSES," to be as follows:-
In the ordinary hydraulic press the cistern or reservoir for holding the
water or liquid with which. the press is worked is detached from the said
press, and a connection between them effected by means of a pipe or tube.
My improvement consists in making the cistern or reservoir in the base
of the press, the said base of the press being hollow. The cylinder and
other parts of the press are situated upon the said cistern or reservoir.
By my improvement the press is made more compact as well as more
convenient in use. From its simplicity it is also more economical in
construction than the ordinary hydraulic press.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-seventh day of November, in the year of our
Lord One thousand eight hundred and fifty-eight, in the twenty-second year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said James Tangye, Her special licence that I, the said James
Tangye, my executors, administrators, and assigns, or such others as I, the
said James.Tangye, my executors, administrators, or 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 "AN
IMPROVEMENT IN HYDRAULIC PRESSES," upon the condition (amongst others)
that I, the said James Tangye, my executors or administrators, by an instru-
ment 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 James Tangye, do hereby declare the
nature of the 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 thereof, that is to say:
In the ordinary hydraulic press the cistern or reservoir for holding the
water or liquid with which the press is worked is detached from the said
press, and a connection between them effected by means of a pipe or tube.
My improvement in hydraulic presses consists in making the cistern or
reservoir in the base of the press, the said base being hollow, as hercin-after
described and illustrated in the accompanying Drawing.
Figure 1 represents in side elevation a hydraulic press made according to
my Invention; Figure 2 represents a plan of the upper side of the base of the
press, with its covering plate removed; and Figure 3 represents a vertical section
of the said base and part of the cylinder, the said section being taken through
the line a, Figure 2. b is the base of the press; the said base is hollow,
as seen in Figures 2 and 3, and constitutes the cistern or reservoir in which the
water or liquid for working the press is held. The said cistern or reservoir
is covered by a plate d, as represented. The said cistern or reservoir is
supplied with water or liquid through a hole in the plate d, covered by the
smail plate e. In presses of small size I prefer to cast the said cistern or
reservoir b, and cylinder f of the press, in one piece, as seen in Figure 3, and

page_text: to strengthen the said cistern or reservoir by diagonal and cross bars or
plates g, g, as seen in plan in Figure 2. In presses of large size I prefer to
cast the reservoir and cylinder separately. Communication between the
compartments formed by the said diagonal and cross bars or plates g, g, is
made by openings h, h, in the bottom of the said bars or plates.
Upon the said cistern or reservoir b, the cylinder and framing and other
parts of the press are situated. As the pump and framing and other parts
of the press are of the ordinary construction, I do not think a detailed
description of the same necessary, and I will therefore only enumerate the
essential parts of the said press. In the cylinder f the ram i works, which
said ram carries the platen k, between which platen and the framing the
matter to be compressed is situated. Communication between the cistern or
reservoir and the interior of the cylinder f is made by the pipe m. n is
the lever by which the press, is worked, by raising and lowering which said
lever the liquid from the cistern or reservoir is made to act upon the ram i,
and raise the said ram, and thereby compress the matter supported upon the
platen k, as is well understood.
Hydraulic presses made according to my Invention are more compact as
well as more convenient in use, and by the simplicity of their construction
more economical than the ordinary hydraulic press.
Having now described the nature of my Invention, and the manner of
carrying the same into effect, I wish it to be understood that I do not limit
myself to the precise details herein described, as the same may be varied
without departing from the nature of my Invention; but I claim as my
Invention, the improvement in hydraulic presses herein-before described and
illustrated in the accompanying Drawing, that is to say, making the cistern
or reservoir, in which the water or liquid for working the press is held, in the
base of the said press.
In witness whereof, I, the said James Tangye, have hereunto set my
hand and seal, this Twenty-first day of May, in the year of our
Lord One thousand eight hundred and fifty-nine.
Witness,
GEORGE SHAW.
JAMES TANGYE. (L.S.)