Improvements in and relating to Cocks, Faucets, and other Valves.
Year: 1895

page_text: Date of Application, 30th July, 1895-Accepted, 7th Sept., 1895
COMPLETE SPECIFICATION.
Improvements in and relating to Cocks, Faucets, and other Valves.
I, HARRY ELLSWORTH KEYES, a citizen of the United States of America,
residing at 200 Fourteenth Avenue, in the Town of Homestead, County of
Allegheny, and State of Pennsylvania, one of the United States of America, 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, reference being had to the accompanying drawings, in which :-
Figure 1 is a vertical longitudinal section of sufficient of a bib-cock open, to
show my improvement.
Figure 2 is a similar view of the same closed.
Figure 3 is a horizontal section taken just under the cap.
Figure 4 is a side elevation of a modified form of plug.
Figure 5 is a longitudinal section, with the band wheel and part of the stem in
elevation, of a gage cock.
Figure 6 is a vertical longitudinal section of a globe valve constructed in
accordance with my invention.
Figure 7 is a similar view of another form of globe valve containing a circular,
instead of an angular traveling nut.
Figure 8 is a horizontal section of Figure 7, taken just under the cap.
Figure 9 is a vertical longitudinal section of a globe valve, plug closed, illus-
trating still another modification of my invention.
Figure 10 is a similar view, plug open, of a globe valve containing still another
modification.
The invention herein described is applicable to bib-cocks, globe valves, gage
cocks, blow-off cocks, faucets, and such like valvular devices, wherein a turning
plug is used to open and close the device, and I adopt herein, as comprehending
all such devices, the term valve.
The object of the invention is to insure the seating of the valve plug without
injury to the plug and its seat, and to provide for the easy opening and closing
of the valve, thus, incidentally, obviating liability of sticking.
The essential feature of the invention is a traveling nut interposed between the
plug and some fixed portion of the valve casing or shell or some adjustably fixed
portion therein, the said nut and plug being connected to move together, whereby
in the act of closing the valve, the said traveling nut will come into positive
contact with the aforesaid fixed portion, arrest the undue movement of the plug,
and insure its being seated tight; and when the valve is being opened, the said nut
will recede from such fixed portion and thereby ease off the plug from its seat and
permit it to be turned readily to full open position.
Referring to the bib-cock, Figures 1, 2 and 3, its barrel, nozzle, valve seat and
cap may all be as usual. Its plug a is made hollow, with a lateral port to oper
communication between the barrel and nozzle. The plug stem b is provided with
an external screw-thread, and is also provided with a turning device b¹. The top
of the casing, which receives the cap, is made with an angular socket c, as shown
more particularly in Figure 3, and in this socket is placed the traveling nut d of
this invention. As shown, this traveling nut is fitted to the screw-thread on the
stem band has an amount of play between the top of the plug a and the inner
bottom of the cap equal to a rise on the screw-thread corresponding to the distance
the plug has to be turned to bring its port into and out of communication with the

page_text: barrel of the cock. When the plug is opening, see Figure 1, this traveling nut
will run down upon the screw-thread of the stem and its lower edge will impinge
upon the top of the plug, and thereby serve as a check nut to prevent the further
rotation, and, consequently, the undue opening of the cock; and so also, when the
plug is closing, Figure 2, the nut will rise upon the stem, and coming into contact
with the bottom of the cap, will arrest the undue movement of the plug,
and also firmly seat the said plug in its seat in the cock casing. To prevent
.leakage at the joints, the inner face of the cap may be provided with any suitable
packing e.
It will be observed that, in order to prevent the traveling nut from rotating,
and thus insure its traveling up and down the stem of the plug as said stem is
rotated, the said traveling nut is made angular and fitted loosely into the angular
socket in the top of the cock shell or casing. When there is any wear of parts,
this provision of the angular socket admits of the nut being adjusted upon the stem
so as to compensate for such wear.
It is obvious that in the closing of the valve or cock, the traveling nut, coming
against a fixed portion of the casing will insure the tight seating of the plug, and
thereby avoid the necessity of forcing down the plug manually, the nut serving
to check the further movement of the plug; and so, also, the nut serves to ease
off the plug when it is desired to open it, and thereby overcomes the tendency to
sticking.
In assembling the parts in the first instance, the nut will be screwed down on the
stem, until its bottom comes into contact with the top of the plug, and then the
plug will be inserted in open position, so that in the act of closing, the nut will
ride up the stem against the cap.
I have found that what is technically known as the water hammer, common in
high pressure service, may be measurably, if not entirely, obviated, by dividing the
port in the plug into two or more ports of smaller diameter, but in the aggregate
equal to, or about equal to the port in the barrel of the casing. This form of the
invention is illustrated in Figure 4. The theory of the operation is that the cut
off, in closing, will be more gradual than if a single opening were made.
In Figure 5 I have shown my invention as applied to a gage cock, in which fis
the shell or casing, adapted to be screwed into a boiler, and is the hollow plug
having a lateral outlet and a hand-wheel, as usual, and also provided with an
externally screw-threaded portion which engages the traveling nut d, the said
traveling nut being arranged within a lateral opening in the shell or casing.
In Figure 6, the traveling nut d is shown as applied in a globe-valve of approved
construction, in which, the valve proper a is made as a turning plug similar to the
turning plug shown in Figures 1 and 2.
In Figure 7 I have shown my invention as applied to a straight-way valve, in
which the turning plug i is made hollow and is provided with opposite ports to
register with corresponding ports in the valve shell j. The traveling nut d' is made
circular as shown in Figure 8, and is held against rotation, and so as to travel upon
the screw-threaded stem of the plug, as said plug is rotated, by means of a pink,
made fast in the nut and engaging a groove in the cap 1, the operation of the
traveling nut being the same as that described with respect to the other figures. A
further improvement illustrated in Figure 7, and, also, illustrated in Figures 9 and 10,
consists in a leakage chamber m, integral with the shell of the valve, and which
receives any leakage at the seat of the plug; and in order to provide for the
out-flow of such leakage from such chamber, there is provided an inwardly opening
check-valve n in the bottom of the plug.
In Figures 9 and 10 there is shown a further improvement, designed to obviate
the necessity for accurate filting of the traveling nut in the casing, and for this
purpose, an adjustable stuffing box or sleeve o is fitted in the cap, and made to
project more or less below the same inwardly, and forming an abutment against
which the traveling nut is arrested in the closing of the valve or plug. The adjust-
ment of this stuffing box or sleeve in the cap is effected by means of a check nut p,

page_text: and leakage is obviated along the stem of the plug by means of packing 9 and the
cap r.
The construction in Figure 10 differs from that in Figure 9 in that the
stuffing box or sleeve in Figure 9 is made with a deep internal cavity, into which
packing may be thrust to co-operate with a peripheral grooves in the stem of the
plug. In Figures 9 and 10 the same sort of traveling nut is shown as that in
Figures 7 and 8.
In the forms of valve shown in Figures 7, 8, 9 and 10, the adjustment of the nut
upon the stem to compensate for wear, may be effected by turning the nut upon the
stem and inserting the pink in a differently located hole in the nut.
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 :-
1. A cock, faucet, or other valve having a turning plug provided with a screw-
thread, and combined with a traveling nut moved up and down within the shell
or casing as the said plug is rotated and adapted to be arrested by a fixed portion
forming part of or inserted in the shell or casing, to limit the closing movement of
the plug and to insure the seating of the plug, and also arrested by contact with
the plug to govern the opening movement of the plug, substantially as described.
2. A valve shell having an opening for the insertion of the valve proper or plug,
a valve seat, and an inclosed leakage chamber at one end of said seat, combined
with a valve proper or plug adapted to said seat and provided with a bottom
opening leading into said plug, and a check valve arranged in said opening and
opening away from the leakage chamber into said plug, substantially as described.
Dated this 30th day of July 1895.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.