IMPROVEMENTS IN THE CONSTRUCTION OF COCKS OR VALVES TO BE USED FOR THE CONVEYANCE OF STEAM, WATER, AND OTHER FLUIDS OR VAPOURS
Year: 1884

page_text: $1
I BENJAMIN RHODES of 240 Bow Road, London, E. in the County of Middlesex,.
Engineer and Brassfounder, do hereby declare the nature of my Invention for
IMPROVEMENTS IN THE CONSTRUCTION OF COCKS OR VALVES TO BE USED FOR
THE CONVEYANCE OF STEAM, WATER, AND OTHER FLUIDS OR VAPOURS" to be
as follows:-
My Invention consists of an expansive plug so constructed that it fits freely
in the barrel or shell of the cock or valve, which is parallel and not taper as in
ordinary cocks. The upper part of the plug is fitted to a screw spindle which
being turned, raises and lowers the plug as desired. At the lower part of the plug
is a pin having a loose metal cone or washer which is free to move upon the pin
of the plug but is kept from falling off by a nut or nuts. The upper part of the
plug forms a shoulder or fast collar; and, between it and the loose washer or cone
another collar is placed, which is made of an elastic material composed by
preference of the compound described by me in the Specification of my Patent
N° 13347. The nut on the end of the plug pin when the plug is made to descend
in the barrel falls into a cavity at the bottom and the loose metal collar or cone is
made to press upon a ledge or projection which forces and expands the elastic
collar or plug and thus perfectly fills up and holds tight between the barrel and
plug so that no leakage is possible. The moment the pressure is taken off by a
turn of the screw spindle, the plug is free to rise without any surface friction; and,
being lifted up out of the way a full, clear passage way or conduit is obtained of
the same area as the bore of the pipe used, without check, throttling or obstruction
of any kind.
For some particular purposes I cover the elastic plug with a metallic ring having
a slit on one side so as to allow it to expand when acted upon by the elastic plug
inside. When the metallic ring is used, the inner collar or plug may be formed of
asbestos fibre or yarn or of other kind of elastic material adapted to the particular
purpose for which the cock or valve is to be used.
Dated this Fourth day of Januarv 1804

page_text: I BENJAMIN RHODES of 240 Bow Road, London, E. in the County of Middlesex,
Engineer and Brassfounder, do hereby declare the nature of my Invention for
"IMPROVEMENTS IN THE CONSTRUCTION OF COCKS OR VALVES TO BE USED FOR
THE CONVEYANCE OF STEAM, WATER, AND OTHER FLUIDS OR VAPOURS," and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement and accompanying Sheet of
Drawings
=
My Invention consists of an expansive plug so constructed that it fits freely in
the barrel or shell of the cock or valve, which is parallel, and not taper as in cocks
as usually constructed. The upper part a¹ (Fig. 1) of the plug a is fitted, as shewn,
to a screw'd spindle-b,-which on being turned, raises and lowers the plug as desired.
At the lower part of the plug is a pin c, which latter is fitted at the bottom thereof
with a loose washer d kept in position by a nut or by nuts, e.
Between the upper
part a of the plug and the washer d, and surrounding the pin c, is fitted a
cylindrical collar or plug piece a made of an elastic material consisting by preference
of the compound described by me in the Specification of any Patent N° 13347.
The nut on the end of the plug pin when the plug is made to descend in the barrel,
takes into a cavity or pocket piece formed, as shewn, in the corresponding part of
the surrounding shell; and, the metal washer d is made to press upon the ledge or
projection f, and thus forces out and expands the elastic cylindrical collar or plug
piece a which then perfectly fills up and holds tight between, the passage way or
conduit of the cock or valve and prevents all leakage.
When it is desired to open the passage way of the cock or valve, the moment
the pressure is taken off by a turn of the screw spindle, the plug rises up without
any surface friction and being lifted up out of the way, a full, clear, passage or
conduit is obtained of the same area as the bore of the pipe used, without check,
throttling or obstruction.
For some particular purposes I cover the elastic plug a with a metallic ring g
(Fig. 3) having a slit on one side so as to allow it to expand when acted upon by
the elastic plug inside. When this arrangement is adopted, the within contained
cylindrical plug a may be formed of asbestos fibre or yarn or of other kind of
elastic material adapted to the particular purpose for which the cock or valve is to
be used.
Referring to Figures 1 and 2 it will be seen that the top of the upper part of the
plug a¹ is provided with lugs or projections a¹¹. These latter take into and work
up and down and are confined within corresponding grooves or channels all, so as
to ensure that the plug shall have vertical motion only,-relatively to that of the
screw'd spindle b,-whilst the valve is being worked.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed I declare that what
I claim is
The use, in the construction of cocks or valves, of the plug a, a¹ fitted and
worked in the manner and for the purposes as herein described, and shewn in the
accompanying Sheet of Drawings.
Dated this Twenty-third day of Santamber 1881