Improvements in Valves for Regulating or Controlling the Flow of Gas or Fluids.
Year: 1893

page_text: Date of Application, 31st July, 1893
Complete Specification Left. 30th Apr., 1894-Accepted, 9th June, 1894
PROVISIONAL SPECIFICATION.
Improvements in Valves for Regulating or Controlling the Flow of
Gas or Fluids.
We, JAMES BOOTH, of the Firm of Samuel Booth & Co. Cheapside Works,
Cheapside, Birmingham, Gas Fitting Manufacturers, and THOMAS KIRK, of
25 Cook Street, Nechells, Birmingham, Manager of Works, do hereby declare
the nature of our said invention to be as follows:-
We will describe our invention as applicable to one of its purposes, viz.: for
regulating or controlling the flow of gas.
The object of this our said invention is to construct a gas cock by means
of which the gas flame may be "turned down low" without any risk of its being
turned out.
In carrying our invention into effect we make the plug of the gas cock cylindrical
in shape instead of its being conical or taper as is usual.
On this cylindrical plug, we cut a screw thread of fine pitch. The body of the
cock has a cylindrical bole in which the plug fits. This hole is tapped, that is it
has a female screw, corresponding with the screw on the plug. The plug thus fits
in the hole in the body of the cock, gas tight, or sound, but at the same time it can
be easily given a motion of partial rotation by the hand. The plug has a hole.
through it, at right angles with its axis in the usual manner for the passage of gas.
In the body of the cock are holes or passages for the passage of gas as is usual.
The plug is provided with a baudle, or thumb piece, and a nighting pin so as to be
easily removed and replaced. This we do preferably by screwing the end which
enters the plug and providing a head with a neck or other means of turning it at
the other end.
Besides the hole through the plug for the passage of gas, we form a groove
extending round half of the circumference of the plug, from one end of the hole to
the other. The cross section of this groove is much smaller than the cross-section
of the hole in the plug.
When the plug is screwed up and into its place, and the "nighting "-pin also,
the action of the gas cock is as follows;-
The thumb piece being thrown over as far as the "nighting pin" will allow in
one direction, the hole in the plug corresponds with the passages in the body of the
cock, and a full stream of gas passes, and issuing from the burner, burns with a
full flame. When it is desired to "turn down" the gas so as to burn with only a
small flame, the plug is turned through an angle of about 90 degrees, that is as far
as the "nighting pin" will allow it. The gas then passes through the groove in
the circumference of the plug which being smaller in cross-section than the hole,
allows less gas to pass, the flame consequently being reduced in size. The plug
may be turned through a smaller angle without extinguishing the flame. In order
to regulate the quantity of gas passing and the consequent size of the flame, when
turned down, we provide a set screw screwed into the body of the cock. The point
of this screw projects more or less into the gas passage formed by the semi-circular
groove.
Regulation by means of a set screw is effected once for all when the cock is
fixed.
It will be seen that the was cock made as above described is a secondary or

page_text: regulating cock by preference placed close to the burner. The ordinary cock is
employed as well, but is always to be turned "full on or "full off."
Dated 31st July 1893.
"
THOS. KENDRICK,
Agent.
COMPLETE SPECIFICATION.
Improvements in Valves for Regulating or Controlling the Flow of
Gas or Fluids.
We, JAMES BOOTH of the Firm of Samuel Booth & Co. Brass Founders
Cheapside Works Cheapside Birmingham and THOMAS KIRK of 25 Cook Street
Nechells Birmingham Manager of Works do hereby declare the nature of our said
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:—
The following is a description of the valves of gas cocks employed for regulating
or controlling the flow of gas therefrom (but is also applicable to regulating or
controlling the flow of other fluids) the object being that the flamme may be "turned
down low" without being "turned out."
"
The gas cock is provided with a cylindrical plug having a screwed thread of a
fine pitch which engages a cylindrical hole with a corresponding screw in said cock,
and is gas tight, "or sound." The body of the cock has the usual gas ways and
the plug has a hole through it as hitherto, and is provided with a handle for
imparting a motion of partial rotation controlled by a "nighting" pin and regulating
the flow of gas.
We form a groove round one half of the circumference of this
plug, which is less in cross section than the hole in the plug, when the handle is
moved in one direction as far as the nighting pin will allow the hole in the plug,
corresponds with the gas ways in the body of the cock and the flame is full, from
the burner, but when the plug is again moved in the opposite direction through an
angle of about 90 degrees just as far as the nighting pin will allow, the gas then
passes through the groove of the plug and being smaller the flame is reduced in
size. To regulate the flow of gas and thus the size of flame we employ a set screw
the point of which passes into the gas way.
And in order that this our said invention may be more fully understood we shall
now proceed more particularly to describe the same and for that purpose we shall
refer to the several figures on the sheet of drawings hereunto annexed the same
letters of reference indicating corresponding parts through all the figures.
Fig. is a section of a straight way gas cock, constructed according to our
invention.
Fig. 2 is an elevation of the same.
Fig. 3 is a sectional plan of the same.
Fig. 4 is a section of an elbow gas cock, instructed according to a modification of
our invention.
Fig. 5 is a section of the same taken on a plan at right angles to the section
Fig. 4.
Fig. 6 is a sectional plan of the same showing the gas way full open.
Fig. 7 is a similar section showing only the by pass open.
a is the body of the gas cock which is tapped that is has a cylindrical hole
having internal or female thread cut in it at a' to receive the plug b. This plug is
not conical as is usually the case in gas cocks but it fits in the hole a' gas light
having a screw cut upon it for that purpose.
I
The plug can have a motion of partial rotation given to it by means of the
thumb piece 2.
The plug b has a hole &³ at right angles to its axis for the passage of gas as is
sal

page_text: In the straightway cock (Figs. 1. 2. 3) this hole goes diametrically through the
plug, but in the elbow cock (Figs. 4, 5, 6 and 7) the hole is partly at right angles.
with the axis and is partly concentric with it as is usual.
a
In the body «
of the cock are holes a² for the passage of gas as is usual..
The plug is provided with a nighting pin c which we make so as to be easily
removed when requisite, this we do usually by screwing it into a projection on the
plug band we provide an ordinary nicked head e' or other well known means for
the purpose of screwing and unscrewing it. So far the construction of our gas
cock does not essentially differ from those in ordinary use except that the plug bis.
cylindrical and is screwed and the body a is tapped to receive it, instead of the
plug and hole in the body being taper as in the ordinary construction.
To enable a small stream of gas to pass when the cock is turned "off""
we form
a small groove (Figs. 1 and 2) extending half way around the circumference of
the plug from one end of the hole 63 to the other. This forms a by pass. The
gas passing in the direction of the arrow obtains access to the circumferential
groove by means of a hole at (Figs. 1 and 2). Between the end of the hole a
and the semicircular groove we provide a regulating screw d which controls.
the amount of gas to be allowed to pass through the hole a and the circumferential
groove through the hole a³ to the burner.
We find that the means of regulating the by pass above described and shewn on
the drawings is more convenient than by using the point of a set screw projecting
into the circumferential groove as described in our Provisional Specification.
In the modification of our invention shewn in Figs. 4, 5, 6 and 7 we retain the
screwed cylindrical plug and the circumferential groove and we form a hole b³.
extending from the central or axial hole in the plug to the circumference.
The inner end of this hole is covered to a greater or less extent by the end of
the regulating screw d which controls the passage of gas from at to the by pass.
The action of the gas cock is as follows. The thumb piece 3 being thrown over
as far as the nighting pin will allow in one direction the hole in the plug b.
corresponding with the passages or holes a² and as in the body of the gas cock as.
shown in Figs. 4, 5, 6 a full stream of gas passes, and issuing from the burner (not.
shown) burns with a full flame. When it is desired to turn down the gas so as to
burn with only a small flame, the plug is turned through an angle of about.
90 degrees, that is as far as the nighting pin c will allow.
The gas then passes through the hole and along the circumferential groove b*
and through a to the burner. The opening in the hole at being regulated by the
screw d allows only a small stream of gas to pass and the flame consequently is
reduced in size. The plug may be turned through any smaller angle than 90 degrees.
without extinguishing the flame.
The regulation of the by pass by the screw d is effected one for all when the
cock is fixed.
ני
It will be seen that a gas cock made as above described is a secondary or
regulating cock, placed by preference, close to the burner, the ordinary cock being
employed as well but always being turned "full on or full off cocks made
according to our invention may be used in certain situations where desirable to.
control the flow of liquids.
The above being our said invention we wish it to be observed that we do not.
limit ourselves to the precise details as shewn on the sheet of drawings, but we
may vary or modify the same without departing from the principle of our said.
invention.
Having now particularly described and ascertained the nature of our said.
invention and in what manner the same is to be performed we declare that what.
we claim as our invention of "Improvements in Valves for Regulating or
Controlling the Flow of Gas, or Fluids
"
1st. The combination, a cylindrical plug 6 having a screw thread of fine pitch
on its surface engaging with a cylindrical screwed hole in the body a of the cock,

page_text: actuated by a thumb piece & said plug with hole diametrically through, a nighting
pin c serewed through the projection on plug b a small groove 6* upon and extending
half way around the plug b and a hole a in connection therewith and the regulating
screw d in their application to the body of a cock for gas and other fluids as
Figs. 1, 2, 3 substantially as hereinbefore described and illustrated by the
drawings.
2nd. The combination a cylindrical plug 6 having a screw thread of fine pitch b
on its surface engaging with a cylindrical hole in the body a of the cock, actuated
by a thumb piece a nighting pin c through the projection on plug b a small
groove extending half way around the plug b a hole at and the hole 6 with
regulating screw d in their application to the body of a cock for gas and other
fluids as Figs. 4, 5, 6, 7 substantially as herein before described and illustrated by
the drawings.
3rd. The general construction and combination of parts substantially as herein-
before described in the foregoing Specification, and illustrated by the accompanying
sheet of drawings.
.
THOS.
KENDRICK,
3, Cherry Street, Birmingham, Agent.