Improvements in Hydraulic Valves.
Year: 1893

page_text: Date of Application, 10th May, 1893
Complete Specification Left, 9th Feb., 1894-Accepted, 10th Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in Hydraulic Valves.
GEORGE HERITAGE Engineer 15 Wood View Terrace Hunslet Leeds do
hereby declare the nature of this invention to be as follows:-
This invention has for its object the construction of a hydraulic valve of the
balanced piston type such as generally used for rivetting forging, pressing and etc.,
bydraulic machinery whereby the valve governs the connection between the
accumulator and the machine in one position and the exhaust of the water from the
machine and the return pipes in the other position. This is generally obtained by
use of at least three leathers of the hat or cup type in this improved form of valve
however by only two leathers or metallic packings which work in one cylinder
bored parallel for the whole of its length without any recesses or bushes or
lanterns. The leather or metallic washer regulating the flow of the water from
the machine is working under pressure over a number of holes and its position above
or under these holes regulates the flow of water to and from the machine.
Dated this 9th day of May 1893.
GEORGE HERITAGE.
COMPLETE SPECIFICATION.
Improvements in Hydraulic Valves.
GEORGE HERITAGE 15 Wood View Terrace Hunslet Leeds 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 relates to the arrangement and construction of various parts of
hydraulic valves such as used for hydraulic or other fluid pressure machinery it
consists of a valve body constructed of suitable material and a spindel sliding in
the same fitted with two leathers or packings of suitable material such as wood,
metal or vulcanite or other materials. By sliding over different apertures inside
the bore of the valve and by their positions to these apertures these packings open
or close the connection of the inlet and outlet to and from valve and machine and to
and from valve and accumulator or power generator.
To explain this my said invention nearer I explain the same by annexed drawings,
in the same means.
A a valve body of suitable material in the same slides B a spindle fitted with
the leathers H and I a liner C is screwed into the bottom of the valve and per-
forated with a number of small holes d over which the leather I slides, these small
holes are connected with the branch E which leades the pressure water to the
respective machine to which the valve is fixed. If the leather I stands above the
holes d it cuts of the communication between the opening F and d and through
the holes d as well with E that means the pressure water is cut of from the machine
as the inlet F of the valve is not connected with the branch E which leads the
water into the machine. In this position as Fig. I shows it the leather I stands
above the holes d and the branch E leading from or to the hydraulic machine to
be worked is in connection with the outlet pipe G so that the machine can exhaust
the water used in the last stroke.

page_text: In Fig. II the leather I stands below the small holes d over which it has travelled
through these holes the branch E is now in communication with branch F the
inlet branch of the valve the pressure water travells now through the valve and
has access to the machine.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
-claim is
The arrangement and construction of an hydraulic valve as herein before
particularly explained and described.
Dated this 7th day of February 1894
GEORGE HERITAGE.