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Патент USA US2412597

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Dec. 17, 14.
2,4125%?
N.‘ BREWER
'STOPCOCK
Filed. March 1, 1944
34
IN VEN TOR.
Nathaniel Brewer
BY
@4156?
2,412,597
Patented Dec. 17, 1946
. UNHE
GFFICE
STAT
2,412,597
s'rorcooK
Nathaniel Brewer, Newtown, Pa., as'signor to
Fischer & Porter Company, Hatboro, Pa., a
corporation of Pennsylvania
Application March 1, 1944, Serial No. 524,577
8 Claims. (Cl. 251-112)
2
1
The present invention relates to stop-cocks
adapted for use in ?uid lines or the like and it
relates more particularly to a, new and improved
as to permit the stop-cock to be used in ‘high
pressure ?uid lines.
For the purpose of illustrating the invention,
there is shown in the accompanying drawings one
pressure ?uid lines.
5 form thereof which is at present preferred, since
the same has been found in practice to give sat
An object of the present invention is to provide
isfactory and reliable results, although it is to be
a new and improved stop-cock suitable for use in
understood that the various instrumentalities of
high pressure ?uid lines or the like. Another ob
which the invention consists can be variously ar
ject of the present invention is to provide a stop
cock of glass or the like suitable for use under 10 ranged and organized and that the invention is
not limited to the precise arrangements and'or
high ?uid pressures. Still another object of the
ganizations of the instrumentalities as herein
present invention is to provide a stop-cock hav
shown and described.
ing a housing and an apertured plug both of glass
Referring to the accompanying drawing in
or other chemically resistant but relatively fran
which like reference characters indicate like
gible material and having means for securely an
parts throughout:
choring the plug within the hOllsillg so as to
Figure 1 represents a cross-sectional view of
withstand relatively high ?uid pressures.
one embodiment of the present invention as it
Other objects and advantages of the present
appears when assembled.
invention are apparent in the following detailed
description, appended claims and accompanying 20 Figure 2 represents an exploded view, partly in
elevation and partly in perspective, of the plug
drawing.
and associated parts of the embodiment of Fig
In chemical plants and laboratories, etc., it is
ure 1.
.
frequently necessary to provide ?uid lines which
In the embodiment of Figures 1 and 2, I may
are resistant to corrosion and chemical attack by
provide a body or housing indicated generally by
?uids required to be moved therethrough, and it
the reference character It]. The body or hous
is frequently also necessary to provide stop-cocks
ing I0 is preferably formed of pyrex, glass or
within said ?uid lines to control and adjust the
other suitable chemically resistant material ca
flow of ?uid.
pable of withstanding fairly high pressures.
Thus, for example, acids and many other chem
icals attack steel, cast-iron, brass, copper and 30 The body or housing It] is provided with a
tapered inner bore II which is carefully ground
other materials of which pipe lines are ordinarily
stop-cock construction suitable for use in high
constructed.
to predetermined dimensions so as to form a ?uid
In such cases, it is frequently desirable to con
struct the ?uid line and the stop-cocks therefor
of glass which is resistant to all ordinary chemi
tight seal with a correspondingly ground plug
member to be hereinafter described.
The body or housing III is provided with a pair
of aligned oppositely extending arms I2- and I3
formed integrally therewith. The arms I2 and
I3 are axially apertured as at M and. I5; the
apertures I4 and I5 communicating with the in
ner bore I I at diametrically opposed points.
cals except hydro?uoric acid.
By employing glass of relatively high strength
or by suitably reinforcing the glass ?uid line, it
is possible to carry ?uids under relatively high
pressures therethrough.
However, ordinary glass stop-cocks of conven
tional construction have presented considerable
difficulties in the handling of high pressure ?uids
since, at high pressures, there is a tendency to
force the plug of the stop-cock out of the body or 45
housing thereof and since, due to the frangibility
of glass, it is impossible to anchor the plug within
The outer ends of the arms I2 and I3 may be
?ared as at I5 and I1 so as to provide shoulders
which aid in retaining in position any suitable
resilient tubing (not shown) for connecting the
arms I2 and I3 to apipe-line or the like,
An annular shoulder I8 is provided upon the
body or housing It adjacent the smaller end of
the body or housing by conventional means em
the tapered inner bore I I thereof.
ployed with stop-cocks or valves made of metal
A plug indicated generally by the reference
or the like.
50 character I9 is provided with a carefully ground
Accordingly, the present invention contem
tapered portion 20 adapted to ?t within the in
ner bore I I of the body or housing I0. As stated
plates a new and improved stop-cock construc
tion which permits the plug of a stop-cock made
hereinabove, the tapered portion 20 of the plug l9
of glass or other frangible material to be ?rmly
and the inner bore II of the body or housing ID
anchored within the body or housing thereof so 55 are carefully ground or otherwise formed to ex
’
“
'
2,412,597
_
3
4
act predetermined dimensions so that, when the
tapered portion 20 of the plug I9 is seated within
the inner bore ll of the body or housing ID, a
wardly and thus tends to hold the plug IS in
position within the body or housing [0.
The plastic ring 25, being softer than the glass
of the body or housing l0, prevents scoring or
?uid-tight seal will be established therebetween.
The tapered portion 29 is provided with an Cl chipping of the glass of said body or housing 10.
opening 2| extending transversely therethrough
and adapted, when in the position shown in
The resilient neoprene ring, which is compressed
somewhat upon tightening of the adjusting nut
Figure 1, to connect the openings l4 and I5 of
33, maintains an outward pressure upon the tail
piece 23.
the arms [2 and I3 of the body or housing I0.
The lock nut 34 which is screwed on after the
As is well known in the stop-cock art, rotation 10
adjusting nut 33 has been adjusted to exert the
of the plug l9 within the body or housing [0 to
proper predetermined pressure upon the plug I9,
a position at right angles to that shown in Figure
is screwed up against the outer edge of the ad
1 will break the connection between the aper
justing nut 33 and thus prevents it from working
tures l4 and I5 and will establish, a ?uid-tight
seal therebetween.
15 loose.
The plug I 9 is provided with a handle 22 adja
It is apparent that, by the novel construction
cent the larger end of the tapered portion 28
of the present invention, the plug [9 is held ?rmly
within the body or housing l0 so as to enable the
thereof.
stop-cock to be used under relatively high ?uid
A tail piece 23 having a reduced transverse di
mension extends from the smaller end of the
pressures, while, at the same time, the glass sur
tapered portion 20 of the plug l9 outwardly be
faces of the plug and the housing are protected
against scoring or chipping or breaking.
yond the shoulder N3 of the body or housing It].
The tail piece 23 is ?ared at its outer end as at
While, for purposes of illustration, a stop-cock
having two arms is shown in the drawing, the
24 so as to provide an annular inclined shoulder
thereon.
novel construction of the present invention is
adapted equally well for use on stop-cocks having
A ring 25 of synthetic plastic or the like is
seated against the shoulder l8 of the body or
three or more connections, and such use is within
the scope of the present invention.
housing 10. A ring 26 of neoprene or other
suitable resilient material is seated against the
The arms [2 and I 3 of the stock-cock, instead
outer edge of the plastic ring 25 and a relatively 30 of being connected within the ?uid line by ?exible
tubing, may be permanently connected thereto by
thin metal washer 21 is seated against the outer
fusing the ends directly to the glass pipe-line, as
edge of the neoprene ring 26.
is well known in the art.
A split frusto-conical packing ring 28 of as
The present invention may be embodied in other
bestos composition or other suitable material is
seated about the ?ared end 24 of the tail piece 35 speci?c forms without departing from the spirit
or essential attributes thereof, and it is therefore
23 and is held thereon by the conical bore 29
desired that the present embodiment be consid
formed on the outer end of a tubular member 30
ered in all respects as illustrative and not restric
of metal or the like; the inner end SI of said
tubular member 3!] being slidably positioned with
in the plastic ring 25.
The tubular member 38 is externally screw
threaded along its outer end as at 32 and an in
tive, reference being had to the appended claims
40 rather than to the foregoing description to indi
cate the scope of the invention.
Having thus described my invention, what I
claim as new and desire to protect by Letters
ternally screw-threaded metal adjusting nut 33
Patent is:
is adjustably connected thereon.
l. A stop-cock comprising a housing having a
An internally threaded metal lock nut 35 is 45
tapered inner bore, an apertured tapered plug
adjustably mounted upon the screw threads 32
rotatably mounted within said inner bore in ?uid
of said tubular member 3i] outside of the adjust
tight relationship therewith, said plug having a
ing nut 33.
tail-piece extending from the smaller end there
In assembling the novel stop-cock of the pres
ent invention, the plug l9 may ?rst be seated ' of beyond said housing, means for retaining said
plug within said bore, said retaining means in
Within the body or housing 10, the split packing
ring 28 may then be forced over the tail piece
23 (above the ?ared end 24 thereof), and the
tubular member 39 may then be slipped over the
?ared end 24. The split ring 28 may then be
moved outwardly and onto the ?ared end 24 of
the tail piece 23 and the tubular member 3% may
be moved outwardly so as to bring the conical
bore 29 thereof against the outer periphery of
cluding telescopically adjustable means adapted
oppositely to bear against said housing and said
tail-piece, and separate compressible members
positioned intermediate said retaining means and
said housing and tail-piece respectively.
2. A stop-cock adapted for use in controlling
high-pressure flow of chemically active ?uids,
said stop-cock comprising a housing of glass or
60 the like having a tapered inner bore and having
the split ring 28.
a plurality of openings leading from said inner
The plastic ring 25, the neoprene ring 26 and
bore, an apertured tapered plug of glass or the
the metal washer 2'! may then be positioned
like rotatably mounted within said inner bore in
about the tubular member 30 and against the
?uid-tight relationship therewith, said plug hav
shoulder I8 of the body or housing It].
ing a tail-piece extending from the smaller end
The adjusting nut 33 is then screw-threadedly
thereof beyond said housing, means for retain
connected upon the outer end of the screw threads
ing said plug within said bore, said retaining
32 of the tubular member 30 and screwed in_
means'including telescopically adjustable means
wardly.
adapted oppositely to bear against said housing
It is evident that, as the adjusting nut 33 is 70 and said tail-piece, and separate compressible
tightened, the rings 25 and 26 and the washer 21
members positioned intermediate said retaining
are forced inwardly against the shoulder l8 while
means and said housing and tail-piece respec
the tubular member 30 is forced outwardly against
tively.
the split ring 28. Thus, tightening of the adjust
3. A stop-cock adapted for use in controlling
ing nut 33 tends to force the tail piece 23 out 75 high-pressure ?ow of- chemically active ?uids, said
2,412,597
5
6
mounted within said inner bore in ?uid-tight re
lationship therewith, said plug having a tail
piece extending from the smaller end thereof
stop-cock comprising a housing of glass or the
like having a tapered inner bore and having a
plurality of openings leading from said inner bore,
an apertured tapered plug of glass or the like
rotatably mounted within said inner bore in ?uid
beyond said housing, said tail-piece being ?ared
at its outer end, and means for retaining said
plug within said bore against the ?uid pressure,
tight relationship therewith, said plug having a
tail-piece extending from the smaller end there
said retaining means including a resilient mem
of beyond said housing, and means for retaining
said plug within said bore against the ?uid
ber bearing against said shoulder, a split pack
ing-ring mounted upon the ?ared end of said
tail-piece, and adjustable means oppositely bear
pressure, said retaining means including a com
ing against said resilient member and said pack
pressible member mounted on the end of said
ing-ring, thereby outwardly to tension said tail
tail-piece, a separate resilient member bearing
piece relative to said shoulder.
against said housing, and adjustable means for
'7. A stop-cock adapted for use in controlling
outwardly tensioning said compressible member
and said tail-piece, said adjustable means be 15 high-pressure flow of chemically active ?uids,
said stop-cock comprising a housing of glass or
ing seated against said resilient members and
the like having a tapered inner bore and hav
bearing against said resilient member.
ing a plurality of openings leading from said
4. A stop-cock adapted for use in controlling
inner bore and having a shoulder formed there
high-pressure flow of chemically active ?uids,
on adjacent the smaller end of said bore, an aper
said stock-cock comprising a housing of glass or
tured tapered plug of glass or the like rotatably
the like having a tapered inner bore and hav
mounted within said inner bore in ?uid-tight
ing a plurality of openings leading from said in
relationship therewith, said plug having a tail
ner bore, an apertured tapered plug of glass or
piece extending from the smaller end thereof be
the like rotatably mounted within said inner
yond said housing, said tail-piece being ?ared
bore in ?uid-tight relationship therewith, said
at its outer end, and means for retaining said
plug having a tail-piece extending from the
plug within said bore against the ?uid pressure,
smaller end thereof beyond said housing, and
said retaining means including a relatively soft
means for retaining said plug within said bore
ring of synthetic plastic or the like seated against
against the ?uid-pressure, said retaining means
said shoulder, a resilient ring of synthetic rub
including a compressible member mounted on the
ber or the like seated against said plastic ring, a
split frusto-conical packing-ring mounted on the
?ared end of said tail-piece, and screw-thread
edly adjustable means seated against said re
end of said tail-piece, a separate resilient mem
ber bearing against said housing, and telescopi
cally adjustable means seated against said re
silient member and bearing against said com
pressible member for outwardly tensioning said
tail-piece.
35
5. A stop-cock adapted for use in controlling
high-pressure ?ow of chemically active ?uids, said
stop-cock comprising a housing of glass or the
silient ring for outwardly tensioning said pack
ing-ring and said tail-piece.
8. A stop-cock adapted for use in controlling
high-pressure ?ow of chemically active ?uids,
said stop-cock comprising a housing of glass or
like having a tapered inner bore and having a 40 the like having a tapered inner bore and hav
ing a plurality of openings leading from said
plurality of openings leading from said inner
inner bore and having a shoulder formed there
bore and having a shoulder formed thereon adja
on adjacent the smaller end of said bore, an
cent the smaller end of said bore, an apertured
aperture tapered plug of glass or the like rotat
tapered plug of glass or the like rotatably mount
ably mounted within said inner bore in ?uid
ed within said inner bore in ?uid-tight relation
tight relationship therewith, said plug having a
ship therewith, said plug having a tail-piece ex
tending from the smaller end thereof beyond said
housing and means for retaining said plug with
in said bore against the ?uid-pressure, said re
taining means including a relatively soft ring of '
synthetic plastic or the like seated against said
shoulder, a resilient ring of synthetic rubber
or the like seated against said plastic ring, a
split packing-ring mounted on the free end of
said tail-piece, and screW-threadedly adjustable
tail-piece extending from the smaller end there
of beyond said housing, said tail-piece being
?ared at its outer end, and means for retaining
said plug within said bore against the ?uid pres
sure, said retaining means including a relatively
soft ring of synthetic plastic or the like seated
against said shoulder, a resilient ring of syn
thetic rubber or the like seated against said plas
'- tic ring, a metallic washer seated against said
means seated against said resilient ring for out
wardly tensioning said packing-ring and said tail
resilient ring, a split-frusto-conical packing-ring
piece.
generally
6. A stop-cock adapted for use in controlling
mounted on the flared end of said tail-piece, a
tubular
externally
screw - threaded
member bearing against said packing-ring and
high-pressure flow of chemically active fluids, 60 an internally screw-threaded nut mounted upon
said tubular member and bearing against said
said stop-cock comprising a housing of glass or
metal washer, said nut being axially adjustable
the like having a tapered inner bore and hav
along said tubular member thereby outwardly to
ing a plurality of openings leading from said
tension said tail-piece relative to said housing.
inner bore and having a shoulder formed there
on adjacent the smaller end of said bore, an aper
tured tapered plug of glass or the like rotatably
NATHANIEL BREWER.
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