IMPROVEMENTS IN COCKS OR TAPS, CHIEFLY DESIGNED TO BE USED IN CONNECTION WITH APPARATUS FOR COMPRESSING OR RAREFYING AIR
Year: 1881

page_text: LETTERS PATENT to William Robert Lake, of the Firm of Haseltine, Lake,
& Co, Patent Agents, Southampton Buildings, London, for an Invention of
"IMPROVEMENTS IN COCKS OR TAPS, CHIEFLY DESIGNED TO BE USED IN
CONNECTION WITH APPARATUS FOR COMPRESSING OR RAREFYING AIR."
A communication from abroad by Joseph François Aymonnet, of Paris,
France.
PROVISIONAL SPECIFICATION left by the said William Robert Lake at the
Office of the Commissioners of Patents on the 29th December 1881.
WILLIAM ROBERT LAKE of the Firm of Haseltine, Lake, & Co, Patent Agents
Southampton Buildings, London. "IMPROVEMENTS IN COCKS OR TAPS CHIEFLY
DESIGNED TO BE USED IN CONNECTION WITH APPARATUS FOR COMPRESSING OR
RAREFYING AIR." [A communication from abroad by Joseph François Aymonnet
of Paris, France.]
This Invention relates to an improved cock or tap which, when used with a pump
or any similar apparatus, will enable a fluid to be compressed or rarefied at will
within a vessel or receptacle.
My improved cock or tap, whose form may be varied according to the various
uses to which it is to be applied, is represented in the accompanying Drawing, it
being understood that the forms illustrated are shewn merely as specimens.
The said cock or tap is provided with a single cylindro-conical passage, the
conical portion being in the form of the frustum of a cone whose sinaller end may
be in the centre, or at one end, of the passage.
Figure 1 represents the first arrangement in which a movable valve 8 (which
may be of any suitable form) is so placed as to open outward, that is to say, its
Bent is at the centre of the passage.
Figure 2 represents the second arrangement in which the valve 8 (which may
also, in this case, be of any suitable form) opens, on the contrary inwardly, that is
to say, its seat is at one end of the said passage.

page_text: As shewn in these two Figures, the valves works in the passage, from which,
however, it cannot escape, being prevented by stops m which may be of any suitable
form and size. Figure 3 shews the position of the cock when its passage is closed
by the walls of the tube in which it is secured.
The head of the cock is provided with marks for indicating to what extent the
said cock is closed.
Figure 4 illustrates the application of my Invention as hereinafter described.
A is the barrel of a pump in which works a piston B. The base of this barrel
must be provided with two or more openings (three are shewn in the Drawing),
pipes C¹, C2, C3, each provided with one of my improved cocks or taps, being
connected with these openings as shewn. The pipes C and C³ communicate
respectively with the receptacles or reservoirs D1 and D2 and the pipe C³ is to
be in communication with any suitable fluid, for example the atmosphere. If it is
desired to cause the air in the reservoir D' to pass into the reservoir D², the cock R³
must be closed, and the cock R¹ inust be turned in such a manner that the valve
therein will move in a direction away from the reservoir D' and towards the
pump A, the cock R2 being turned so that the valve therein will move towards
the receptacle D2, that is to say, in a direction away from the pump. If it is desired
to effect this operation inversely, the cock R³ must remain closed and both the
cocks R¹ and R2 are turned to the extent of 180 degrees. If it is desired to create
a vacuum in one of the reservoirs (D¹ for example) the cock R² is closed and the
cock R' is turned so that the valve therein moves in a direction away from the
reservoir D towards the pump A, and the cock R³ is so turned that the valve
therein will move in a direction away from the pump.
If it is desired to compress
the air in the reservoir D¹ the cock R is left closed and both the cocks R¹ and R³
are turned to the extent of 180-degrees. If-it-is-desired to compress the air in the
reservoir D, the cock R' is closed and the cock R2 is operated in the same manner
as the cock R' was operated in the preceding example, the cock R³ remaining as
before.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Robert Lake in the Great Seal Patent Office on the
29th June 1882.
"
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co, Patent Agents,
Southampton Buildings, London. IMPROVEMENTS IN COCKS OR TAPS, CHIEFLY
DESIGNED TO BE USED IN CONNECTION WITH APPARATUS FOR COMPRESSING OR.
RAREFYING AIR." A communication from abroad by Joseph François Aymonnet,
of Paris, France.
This Invention relates to an improved cock or tap, which, when used with a
pump, bellows, or any similar apparatus, will permit a fluid to be compressed or
rarefied at will within a vessel or receptacle.
My improved cock or tap, whose form may bo varied according to the various
uses to which it is to be applied, is represented in the accompanying Drawing, it
being understood that the forms illustrated are shewn merely as specimens.
The said cock or tap is provided with a single cylindro-conical passage, the
conical portion being in the form of the frustum of a cone whose smaller end may
be in the centre or at one end of the passage.
Figure 1 represents the first arrangement in which a moveable valve 8 (which
may be of any suitable form) is so placed as to open outwardly, that is to say, its
seat is at the centre of the aforesaid passage.
Figure 2 represents the second arrangement in which the valve 8 (which, may
also in this case be of any suitable form) opens, on the contrary, inwardly, that is
to say, its seat is at one end of the said passage.
As shewn in these two Figures, the valve s works within the said passage, from
which, however, it cannot escape, being prevented by the stops m, which may be
of any suitable form and size.
Figure 3 shows the position of the cock when its passage is closed by the walls
of the tube in which it is secured.
The head of the cock is provided with marks for indicating to what extent the
said cock is closed.
Figure 4 illustrates the application of iny Invention as hereinafter described.
A is the barrel of a pump in which works a piston B. The base of this barrel
must be provided with two or more openings (three are shewn in the Drawing),
the pipes C C C³, each provided with one of my improved cocks or taps R1, R2, R³,
being connected with these openings as shewn. The pipes C C communicate
respectively with the receptacles or reservoirs D₁ D², and the pipe C³ is to be in
communication with any suitable fluid, for example with the atmosphere. When
it is desired to cause the air in the reservoir D' to pass into the reservoir D³, the
cock R³ is closed, and the cock R' is turned in such a manner that the valve therein
will open in a direction away from the reservoir D' and towards the pump A, the
cock R being turned so that the valve therein will open towards the receptacle D³,
that is to say, in a direction away from the pump A. When it is desired to effect
this operation inversely, the cock R³ is left closed and both the cocks R' and R²
are turned to the extent of 180 degrees. If it is desired to create a vacuum in
one of the reservoirs (D¹ for example) the cock R is closed, and the cock is
turned so that the valve therein opens in a direction away from the reservoir D'
towards the pump A, and the cock R³ is so turned that the valve therein will open
in a direction away from the pump. If it is desired to compress the air in the
reservoir D, the cock R³ is left closed, and both the cocks R' and R³ are turned to
the extent of 180 degrees. If it is desired to compress the air in the reservoir D",

page_text: the cock R¹ is closed and the cock R2 is operated in the same manner as the
cock R' was operated in the preceding example, the cock R³ remaining as
before.
Having thus fully described the said Invention as communicated to me by my
foreign correspondent, and the manner of performing the same, I wish it understood
that I claim.
First, A cock provided with a valve and having a cylindro-conical
within which the said valve is adapted to operate, all arranged substantially as
passage
described for the purpose specified.
Second. The stops in combination with the valve in the cylindro-conical
passage of the cock, for limiting the play of the said valve, substantially as, and
for the purpose, specified.
In witness whereof I the said William Robert Lake have hereunto set my
hand and seal this Twenty-ninth day of June in the year of our Lord One
thousand eight hundred and eighty two.