Year: 1888

page_text: Date of Application, 6th Apr., 1888
Complete Specification Left; 7th Jan., 1889
Complete Specification Accepted, 12th Feb., 1889
We, WILLIAM HARTCLIFFE and WILLIAM HENRY MALKIN both of the St. Simon
Street Brass and Copper Works Salford in the County of Lancaster Engineers, do
hereby declare the nature of this Invention to be as follows:-
Our invention relates to improvements in what are known as full way valves or
stop cocks and the chief object of our Invention is to improve the construction in
such manner that the two parallel valve faces are kept automatically pressed against
their seatings whereby good joints are insured and also to provide a simple and
ready means of adjustment to compensate for wear.
In constructing our improved full way valve or stop cock we employ two metal
discs or plates with plain surfaces for the two parallel valve faces and on the back
of each valve disc or plate we form or attach two parallel projections each of which
is tapered or inclined from the centre towards each extremity so as to form what
we might term two double wedge shaped projections. On the valve spindle we
mount loosely two blocks or equivalents the side faces of which are tapered or
inclined to correspond with the tapered projections with the exception of the central
portion of each side face which. is left plain and acts as a guide for the two pro-
jections on the valve. Each block is adjustable on the spindle and is held to its
work by means of a.spring compressed between it and a nut on the spindle so that
by screwing one of the nuts one of the blocks can be moved toward the other
whereby the two valve faces will be forced outward against their seatings to tighten
the joints when required.
Either or both of the nuts can be operated for the purpose of making the
adjustment when setting the valve and subsequently the compressed springs act
automatically to compensate and take up any slight wear in the valve faces or
seatings. In practice we propose to dispense with the lower spring and to make
any adjustment necessary by means of the lower nut only it being more readily
accessible than the upper nut.

page_text: In place of the arrangement of inclined surfaces for making the parallel adjustment
of the valves we may use two cones mounted upon the valve spindle and lying in
corresponding conod recesses on the back of the valve discs or plates.
11
F
1
CA
1 1000
We, WILLIAM HARTCLIFFE and WILLIAM HENRY MALKIN both of the St. Simon
Street Brass and Copper Works Salford in the County of Lancaster Engineers, 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:
Our invention relates to improvements in what are known as full way valves or stop
cocks and the chief object of our Invention is to improve the construction in such
manner that the two parallel valve faces are kept automatically pressed against their
seatings whereby good joints are insured and also to provide a simple and ready
means of adjustment to compensate for wear.
In constructing our improved full way valve or stop cock we employ two metal
discs or plates with plain surfaces for the two parallel valve faces and on the back of
each valve disc or plate we form or attach two parallel projections each of which is
tapered or inclined from the centre towards each extremity so as to form what we
might term two double wedge shaped projections. On the valve spindle we mount
loosely two blocks or equivalents the side faces of which are tapered or inclined to
correspond with the tapered projections with the exception of the central portion of
each side face which is left plain and acts as a guide for the two projections on the
valve. Each block is adjustable on the spindle and is held to its work by means of a
spring compressed between it and a nut on the spindle so that by screwing one of the
nuts one of the blocks can be moved toward the other whereby the two valve faces
will be forced outward against their seatings to tighten the joints when required.
Either or both of the nuts can be operated for the purpose of making the adjustment
when setting the valve and subsequently the compressed springs act automatically to
compensate and take up any slight wear in the valve faces or seatings. In practice
we propose to dispense with the lower spring and to make any adjustment necessary
by means of the lower nut only it being more readily accessible than the upper nut.
In place of the arrangement of inclined surfaces for making the parallel adjustment
of the valves we may use two cones mounted upon the valve spindle and lying in
corresponding coned recesses on the back of the valve discs or plates.

page_text: And in order that our Invention may be fully understood and readily carried into
effect we will describe the accompanying Sheet of Drawings reference being had to
the figures and letters marked thereon.
Figure 1 is an elevation and Fig. 2 a sectional elevation of one of our improved full
way valves. Fig. 3 is a detail view with one of the valve discs removed of the valve
spindle the two tapered blocks thereon and the remaining valve disc and Fig. 4 is a
view of one of the valve discs detached.
In these views.-a is the valve casing, 6 the screwed valve spindle in this case
shown with a hand wheel 6' for opening and closing the valve, cc' are the two tapered
or inclined blocks which are mounted loosely on a squared portion of the spindle b the
block c bearing against a stationary collar 63 formed or fixed on the valve spindle and
the block c¹ against a coiled spring d the tension on which is adjustable by means of a
nut e screwed on to the end of the valve spindle; ff are the two valve discs the
faces of which are made parallel to form the valve faces while at the backs of the discs
are formed the two tapered projections f' f' which respectively bear against the
tapered surfaces on the blocks c c'. The squared portions c³ ³ of the blocks c c¹
project into the spaces f* between the projections ff on the discs ff.
It will be readily understood that by screwing up the nut e the spring d will be
compressed and the block c¹ moved towards the block c and that the tapered surfaces
on said blocks acting respectively on the reversely tapered projections ff will force
the discs ff' outward and press the valve faces more closely to their seatings.
Instead of the fixed collar 6' a nut or other adjustable part either with or without a
spring may be employed for the block c to bear against and if a nut and spring
be thus employed the spring d might be dispensed with but we prefer the arrange-
ment shown and described as by it we are enabled to regulate the valve faces without
taking the valve to pieces by simply removing the screwed cap g and adjusting
the nut e.
Our improved straight full way valves are applicable wherever it is necessary or
advantageous that both the inlet and the outlet passages should be perfectly tight,
as for example in water gauges.
Having now particularly described and ascertained the nature of our said Inven-
tion and in what manner the same is to be performed we declare that what we
claim is-
1. The combination with two parallel valve faces or discs having tapered
projections at the backs thereof, of blocks or equivalents having surfaces tapered
reversely to those on the projections said blocks being mounted and adjustable upon
the valve spindle substantially as and for the purposes herein described with reference
to the Drawings annexed.
2. The construction combination and arrangement of parts embodying our
improvements in full way valves or stop cocks substantially as herein described and
as illustrated by the accompanying Drawings.
Dated this 5th day of January 1889