An Improved Valve or Tap.
Year: 1889

page_text: Date of Application, 13th July, 1889-Accepted, 17th Aug., 1889
COMPLETE SPECIFICATION.
An Improved Valve or Tap. .
I OSWALD ROSE of 40 Doddington Grove Kennington in the county of Surrey
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 :-
The object of this my invention is to produce and provide for use a simple convenient
and efficient valve or tap in which no packing is needed or required to keep the same
tight. This my valve or tap will therefore be applicable for and with all liquids and
fluids being in each particular case made of such material or materials as is or are
suitable and proper for use with the particular liquid or fluid that will pass there-
through and it is more especially suitable for use in connection with petroleum and
other hydrocarbon oils as the leakage that is so objectionably prevalent in the use
of the ordinary valves or taps with these hydrocarbon oils will be almost if not
altogether prevented.
In order the more clearly to explain my invention and in what manner the same is
to be performed I have shewn in the accompanying drawing a longitudinal section of
an extremely convenient form of this my improved valve or tap.
I construct a spindle A for this valve or tap on one end of which can conveniently
be secured a small wheel B to act as an handle in which handle B can conveniently be
mounted a pin or pointer C to indicate on a vernier or otherwise the position of the
plug of this valve or tap and whether the same is closed or opened and if the latter
by how much. Near the other end of the spindle A and all round the same is formed
thereon a cone D and longitudinally and axially in this end of the spindle A. which
may be somewhat enlarged therefor can be made a recess E with a female screw thread.
The plug F of this valve or tap is made separate from the spindle A and on and all
round this plug F in the proper position is formed another cone or shoulder G opposed
to the aforesaid cone D on the spindle A and on the end of this plug F can be made
a male screw thread H which can engage the female screw thread E in the spindle A
and these screw threads are preferably formed with a somewhat coarse pitch so that a
small movement of the spindle as is hereinafter described will cause a comparatively
large movement of the plug. Though I preferably as is aforesaid make the female
screw thread in the spindle and the inale screw thread on the plug I may obviously
reverse the same and make the male screw thread on the spindle and the female
screw thread in the plug when I may deem it expedient so to do.
I construct a casing for this spindle and plug of any convenient shape and size
suitable therefor in which casing a seating K is made in the proper position for
the cone D on the spindle A and another seating L is made in the proper position
for the cone G on the plug F and these seatings are also opposed to each other.
One passage M is made for the liquid or fluid into the interior of this casing
opening thereinto between the two seatings K and L and another passage N is
made for the liquid or fluid into the interior of this casing opening thereinto
outside the plug F and I preferably use the passage M for the entrance of the
liquid or fluid into this valve or tap and the passage N for the exit of the same
thereout and these passages M and N may be made and formed in any convenient
manner and of any suitable shapes.
A stud or screw P passes through the walls of the casing in the proper position
and enters a slot made therefor in the plug F to prevent the same being turned
when the spindle A is revolved and compel it to move longitudinally backwards
and forwards in the casing. Round the spindle A outside the cone D 1 place a
ring or washer Q and a stud or screw R passes through the walls of the casing

page_text: in the proper position and enters a slot made therefor in this washer Q to prevent
the same being turned when the spindle A is revolved and a gland S round the
spindle A is screwed into the end of the casing to force the washer Q down on the
back or shoulder of the cone D and thus press this cone 1) tightly down on its
Seating K.
When therefore this valve or tap is closed and the several parts thereof are in the
positions shown in the drawing the spindle A can be revolved by the handle B in the
proper direction as far as may be desired and indicated if so fitted by the pointer C
and as the plug F cannot turn with this spindle A by reason of the stud P this plug F
must obviously move longitudinally in the casing thus lifting the cone G off its
seating and allowing the passage of the liquid or fluid through this valve or tap
while the cone D on the spindle A cannot by this aforesaid revolution thereof and
consequent movement longitudinally of the plug F be lifted off its seating K and
thereby allow any leakage therethrough by reason of the washer which is forced
down on the back or shoulder thereof by the gland S and as this washer Q cannot
turn therewith by reason of the stud R this revolution of the spindle A will not tend
to turn or loosen the gland S especially when as is preferably the case the washer Q
and the gland S are made to fit quite loosely round the spindle A. The spindle A can
then he revolved by the handle B in the other direction and in a similar manner and
from and by the same cause the plug F is drawn back until the cone G thereon is
pressed tightly down on its seating L stopping the passage of the liquid or fluid
through this valve or tap for it is obvious that in this position when the passage M. is
the entrance passage no liquid or fluid can pass the cones D and G while they are thus
pressed tightly down on their seatings K and L or when the passage N is the entrance
passage no liquid or fluid can pass the cone G while it is thus pressed tightly down on
its seating L. In both positions therefore that is to say both when opened and
closed this valve or tap is tight without any packing and leakage is prevented as is
desired.
I have thus described my invention and I have shewn in the accompanying
drawing as is herein before stated an extremely convenient form of this my improved
valve or tap and very suitable dimensions and proportions of the same for many uses
as also very proper methods and details of constructing and fitting the same and the
several parts thereof but I do not limit myself exactly thereto for it is obvious that I
can vary the form and dimensions and proportions of this valve or tap and of the
several parts thereof and the methods and details of constructing and fitting the
same as may be expedient or preferable in each particular case without departing from
this my invention.
:
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
1. The valve or tap consisting of the combination with a revoluble spindle provided
with a cone and a non-revoluble plug also provided with a cone opposed to the cone
on the spindle which spindle and plug are engaged into each other by male and
female screw threads of a casing provided with opposed seatings for the two cones
and a passage thereinto between the two seatings and another passage thereinto
outside the plug substantially as and for the purpose hereinbefore described and
declared.
2. In a valve or tap the combination of a spindle A provided with a female or male
screw thread E and a cone D a washer Q provided with a stud Ra gland S and a
plug F provided with a male or female screw thread H a cone G and a stud P with a
casing provided with seatings K and L for the cones and passages M and N for the
liquid or fluid substantially as herein before described.
3. In a valve or tap the combination in and with a casing provided with seatings K
and L and passages M and N of a revoluble spindle A provided with a cone D and
operating through and by male and female screw threads thereon a non-revoluble

page_text: plug F provided with a cone G and an handle B on the spindle A provided with a
pointer C to indicate on a vernier or otherwise the position of the plug F substan-
tially as herein before described.
4. The improved valve or tap for liquids or fluids substantially as hereinbefore
described and shewn in the accompanying drawing.
HART & Co.