IMPROVEMENTS IN STEAM AND WATER TAPS OR STOP-COCKS."
Year: 1876

page_text: LETTERS PATENT to George Maule Marchant, of Huddersfield, in the County
of York, for the Invention of "IMPROVEMENTS IN STEAM AND WATER TAPS OR
STOP-COCKS."
PROVISIONAL SPECIFICATION left by the said George Maule Marchant at
the Office of the Commissioners of Patents on the 11th January 1876.
GEORGE MAULE MARCHANT, of Huddersfield, in the County of York. IMPROVE-
MENTS IN STEAM AND WATER TAPS OR STOP-COCKS."
"
My Invention consists of a self-acting adjustment of the stop-cock or tap which
renders it always steam or water tight, and is applicable to taps or stop-cocks
having taper plugs, and is as hereafter described. I form a hollow chamber in the
larger end of the conical plug. Into the casing containing it is screwed or
otherwise fixed a corresponding cover, which may be formed chambered; the
chamber in the plug, together with the cover, form a box, wherein is inserted a
spiral spring, which being sufficiently compressed by means of the cap or cover
retains the conical plug down in its required position in the case.
As the conical plug and casing wear in their working parts the spring forces
the plug and keeps the wearing surfaces of it and the casing together, preserving
the tap or stop-cock steam or water tight.
I also provide a passage from the steam or waterway in the casing into the
herein-before mentioned spring box, by which means a pressure of water or steam
can be brought to bear on the taper or conical plug and act as a help to the
spiral spring. The stop-cock or tap may be employed for other fluids than steam
or water.

page_text: My Invention consists of a self-acting adjustment of the stop-cock or tap which
renders it always steam or water tight, and is applicable to taps or stop-cocks
having taper plugs, and is as hereafter described. I form a hollow chamber in the
larger end of the conical plug. Into the casing containing it is screwed, or
otherwise fixed, a corresponding cover, which may be formed chambered; the
chamber in the plug together with the cover form a box, wherein is inserted a spiral
spring, which being sufficiently compressed by means of the cap or cover retains
the conical plug down in its required position in the case.
As the conical plug and casing wear in their working parts, the spring forces
down the plug, and keeps the wearing surfaces of it and the case together, pre-
serving the tap or stop-cock steam or water tight.
I also provide a passage from the steam or waterway in the casing into the
herein-before mentioned spring box, by which means a pressure of water or steam
can be brought to bear on the taper or conical plug and acts as a help to the
spiral spring. The stop-cock or tap may be employed for other fluids than steam
or water.
And in order that my Invention may be more completely understood, reference
is given to the accompanying Sheet of Drawings and letters of reference marked
thereon.
DESCRIPTION OF DRAWINGS.
Figure 1 represents a side elevation, and Figure 2 a longitudinal section of a tap
or cock, constructed according to my Invention.
a is the hollow chamber in the end of the conical plug b. Into the casing c
containing it, is screwed or otherwise fixed a corresponding cover d, which may be
forined chambered, as shewn at e, the chamber a in the plug b together with the
cover d forms a box wherein is inserted a spiral spring f, which being sufficiently
compressed by means of the cap or cover d retains the conical plug b in its required
position in the case c.
As the conical plug b or casing c wears in their working parts, that is to say,
at g the spring f forces down the plug band keeps the wearing surface of it and
the casing c together, preserving the tap or stop-cock perfectly steam or water
tight.
I also provide a passage h from the steam or waterway i in the casing c into the
herein-before mentioned spring box, by which means a pressure of steam or water
can be brought to bear on the taper or conical plug b, and act as a help to the spiral
spring f. The stop-cock or tap may be employed for other fluids than steam or
water.
Having now described the nature of my said Invention, and shewn by Drawings
how the same may be carried into practice, I would have it understood that I do
not limit myself to the exact limits, details, or configuration of the various parts
I have explained and shewn, as the same may of course be varied or modified
without in any way departing from my Invention; but what I do claim and desire
to be secured to me by Letters Patent is, the arrangement, construction, and combi-
nation of the various parts forming the tap or stop-cock having a self-acting adjust-
ment of plug, substantially as and for purposes herein-before described and illustrated
in the accompanying Drawings.
In witness whereof, I, the said George Maule Marchant, have hereunto set my
hand and seal, this Third day of July, in the year of our Lord One thousand
eight hundred and seventy-six.