IMPROVEMENTS IN COCKS OR TAPS TO BE USED FOR LIQUIDS, AIR, GASES OR VAPOURS
Year: 1884

page_text: I WILLIAM HEATHER SPENCE of 8 Quality Court Chancery Lano in the county
of Middlesex Patent Agent do hereby declare the nature of the said Invention for
IMPROVEMENTS IN COCKS OR TAPS TO BE USED FOR LIQUIDS, AIR, GASES OR
VAPOURS, (being a communication to me from abroad by Jean Benoit Granjon of
Chatonnay (Isère) in the Republic of France, Mechanician) to be as follows:-
The object of the said invention is the construction of cocks or taps to be used
for the passage of liquids, air, gases, or vapours of simple form and capable of
resisting great pressure.
The invention consists in its ordinary form of a diaphragm capable of receiving
an oscillating lateral movement between two washers sufficiently elastic to form an
air tight joint (even under great pressure) in order to open & close the cock or tap.
The washers between which the diaphragm moves are held between two metallic
parts of the cock or tap by means of bolts capable of being screwed or tightened
up from the outside of the cock or tap, in order to bring the parts in close contact.
as required.
The oscillating diaphragm is or may be heart-shaped or of other suitable form,
and is moved as required by means of a lever terminating in a handle. The bolt
at the lower end of the said diaphragm opposite the handle serves as a pivot for
the oscillating movement thereof, and the two other bolts for stops for limiting
the traverse of the lover.
The diaphragm has formed in it an aperture corresponding with the section of
the passage through the barrel of the cock or tap, which passage it opens when
moved against one stop and closes when brought back to the other stop, or partly
opens the cock or tap when moved into some position between the two stops as
shown by an indicator on the handle moved over a graduated scale.
The washer is let into suitable grooves or notches made in the cheeks of the two
parts of the cock or tap in order to prevent the said washer from being forced out
into the said passage when the bolts are tightened.
When the liquids or gases are of a corrosive or oxydising character, the parts
likely to be attacked in the cock or tap would be protected by a material adapted
to withstand such action and the washer protected by deepening the grooves or
notches for its reception as required.
417

page_text: I WILLIAM HEATHER SPENCE of 8 Quality Court Chancery Lane in the County
of Middlesex, Patent Agent do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN COCKS OR TAPS TO BE USED FOR LIQUIDS, AIR, GASES OR
VAPOURS" (being a con.munication to me from abroad by Jean Benoit Granjon of
Chatonnay (Isere) in the Republic of France Mechanician) and in what manner the
same is to be performed to be particularly described and ascertained in and by the
following statement :-
The object of the said Invention is the construction of cocks or taps to be used
for the passage of liquids, air, gases or vapours of simple form and capable of
resisting great pressure.
The Invention consists in its ordinary form of a diaphragm capable of receiving
an oscillating lateral movement between two washers sufficiently elastic to form an
air-tight joint (even under great pressure) in order to open and close the cock
or tap.
The washers between which the diaphragm-moves are held between two metallic
parts of the cock or tap by means of bolts capable of being screwed or tightened
up from the outside of the cock or tap, in order to bring the parts in close contact
as required.
The oscillating diaphragm is or may be heart shaped or of other suitable form
and is moved as required by means of a lever terminating in a handle. The bolt
at the lower end of the said diaphragm opposite the handle serves as a pivot for
the oscillating movement thereof and the two other bolts form stops for limiting
the truverse of the lever.
The diaphragm has formed in it an aperture corresponding with the section of
the passage through the barrel of the cock or tap, which passage it opens when
moved against one stop and closes when brought back to the other stop, or partly
opens the cock or tap when moved into some position between the two stops as
shown by an indicator on the handle moved over a graduated scale.
The washer is let into suitable grooves or notches made in the cheeks of the two
parts of the cock or tap in order to prevent the said washer from being forced out
into the said passage when the bolts are tightened.
When the liquids or gases are of a corrosive or oxydising character the parts
likely to be attacked in the cock or tap would be protected by a material adapted
to withstand such action and the washer protected by deepening the grooves or
notches for its reception as required.
In order that the Invention may be fully understood I will proceed to describo
it more particularly by the aid of the accompanying drawings in which are
represented the parts of the cock or tap above referred to.
DESCRIPTION OF THE DRAWINGS.

page_text: B is the hinder portion of the cock or tap forming a junction with the front
part A C is the laterally oscillating diaphragm capable of being turned upon the
pivot bolt csuch bolt being provided with a screw thread f and external nut for
the purpose of tightening up the cock or tap as required c¹ c¹ are bolts forming
also stops to limit the lateral traverse of the lever P.
bb are the washers made of metal, leather, india rubber or other suitable
material and shown as let into suitable grooves or notches formed in the front and
hinder portions A and B of the cock or tap.
d is the aperture in the diaphragm C to allow for the passage of the fluid from
the barrel e.
The materials of which the diaphragm and other parts of the cock or tap are
composed may be varied according to the nature of the gases, air, liquids or
vapours for the conducting of which the cock or tap is required to be employed;
as for instance the diaphragm may be made of white metal, ebonite, bono, poreclain
or other suitable material.
Having now particularly described and ascertained the nature of the said
Invention and in what manner the same is to be performed (communicated to me
from abroad as aforesaid) I declare that what I claim is:
First The construction of a cock or tap to be used for the passage of liquids,
air, gases or vapours, provided with a diaphragm oscillating between washers
capable of being externally tightened up, such diaphragm having a lateral move-
ment for opening and closing the said cock or tap. substantially as hereinbofore
described.
And secondly The arrangement of the washers in suitable grooves or notches in
order to prevent their displacement on tightening up the cock or tap and also
(when corrosive or oxydising liquids and gases are used) to protect them from the
action of the same, substantially as herein before described.