вход по аккаунту


Патент USA US2111998

код для вставки
March 22, 1938-
l'iled Sept. 9; 1956
Z17 r
Patented Mar. 22, 1938
GAS oocx
Casper S. Stuckenholt and John J. Slavin, Cleve
land,‘ Ohio, assignors to The W. J. Schoen
berger Company, Cleveland, Ohio, a corpora
tion of Ohio
Appllcation September 9, 1936, Serial No. 100,011
1 Claim.‘ (01. 251-165)
Our invention relates to improvements in gas
The object of our invention is to provide a cock
of this character which can not be accidentally
5 opened to allow the gas to now to the burners
position as will be hereinafter more fully de
The plug valve lll has its lower end .1! of the
usual solid form and formed with an opening 12
therethrough and adapted to register with the
and pertains particularly to the type of cocks in ‘ oppositely arranged inlet and outlet openings 2
which theoperatingstem of the plug valve has and 3. The upper end of plug valve I0 has a cir
a longitudinal movement for releasing it from its' cular opening 13 extending from its upper end
locked position, so that the plug valve can be
10 then rotated to different positions.
Another object of the invention is to provide
a cock of this type in which the operating stem
and the spring controlling the latching members
a considerable distance therein for the purpose of
securing the operating stem, as will be presently 10
described. The exterior of the valve plug has its
upper end externally reduced as indicated at M
and said reduced portion has a vertical or longi
within the turning plug, so that the same can be
tudinal slot I5 which communicates with the
opening l3.
readily removed from the housing without a?ect
ing their assembled operative relation.
which has its lower end 18 of a circular form to
are retained in their relative assembled position
Within the opening 13 is the valve stem I6
closely ?t the opening 13 and is provided with a
pin Ill extending outwardly through the slot 15
beyond the wall of the reduced portion M of 20
housing and in which all parts, during assembly the plug. The extreme lower end of the stem is
operations, will automatically assume their, provided with a circular depression 5| in which is
proper position to allow the plug to be properly arranged a coil spring 19 which engages the bot—
tom thereof and normally exerts upward pressure
clamped in operative position.
A further object of our invention is to provide
a valve of this character in which the turning
20 plug can be readily removed .or inserted in the
A still further object of our invention is to
provide a simple cheap and e?ective valve of this
type having certain details of structure and com
bination of parts hereinafter more fully set forth.
In the accompanying drawing:
Figure 1 is a vertical sectional view of our im
proved valve;
Figure 2 is a top plan view partly in sectio
showing locking nut removed;
Figure 3 is a vertical section view of'the plug
valve taken on the line 3-3;
Figure 4 is a perspective view of the plug and
locking sleeve in their separated relation; and
Figure 5 is a side view of the plug valve show
ing a modi?ed means of locking the stem in the
40 ‘plug valve.
on the stem. The valve stem I6 is slightly re
which are of diilerent sizes for a purpose later
described. The locking sleeve 26 is of a thickness 40
Referring now to the drawing l represents the
valve housing of the usual cast form having in
equal to the reduced portion of the valve plug
one side an inlet 2 and in the opposite side an
space formed thereby, between it and the ?ange ‘Iv
so that it is free to pass over the same within the
outlet 3 both communicating with the central
of the housing.‘ The upper end of the sleeve on
45 tapering plug valve opening 4 which has its lower
opposite sides is provided with lugs 21 and 28 of
different sizes, corresponding in width with'the
end closed by the solid wall 5. This wall is pro
vided with an opening 5!), closed by a screw plug
8, whereby the plug valve may be more‘ readily
removed from its opening in the event it should
50 become corroded or - otherwise wedged in the
The housing I is provided with an
upwardly extending ?ange 1 into which extends
the tapering valve opening and is externally
threaded as indicated at 8 and upon which is
65 screwed the nut 9 for holding a valve plug [0 in,
duced from the point 20 to its upper end forming
a shoulder at the point 20. The interior of the
opening l3, in the plug, is provided with a semi
circular groove 2l’ which extends circumferen
tially around the plug from the walls of the slot 30
15, and ?ttingin said groove is a locking spring
2| which has outwardly turned ends 22 and 23
extending into the slot Hi. This spring 2| en
gages the shoulder 20 of the stem l6 and limits
the upward movement of the stem caused by the
pressure of the spring I9.
The upper end of the ?ange ‘I, in opposite sides
thereof, is provided with the notches 24 and 25
notches 24 and 25 in which the lugs are adapted
to seat. The sleeve is thus held in the housing
against rotation and due to the relative sizes of
the slots and lugs can only be placed therein in 50
one position, so that the locking feature can only
have one position relative to the plug and its
The locking sleeve at its lower end is formed.
with a cut away portion as indicated at 29, which
2,1 1 1,998
extends approximately one third of the circum~
ierence of the sleeve, and at one end of said
cut away portion, is a notch 30 communicating
therewith, and the pin I1 is free to move in the
cut away portion of the sleeve and enter the
notches. Surrounding the valve stem is a nut
3| which has a portion 32 engaging the ?ange l
coil spring I! can be removed as a unit when
ever it becomes necessary to grease the plug, as
and having an outwardly enlarged portion 33
is frequently the case.
tion has proven particularly troublesome due to
10 threaded portion of the ?ange ‘I whereby the
parts are locked in their operative position.
When the valve is closed the pin I‘! has been
forced by the spring i 9 into the notch 30 and the
plug can not be turned by the valve stem. When
15 in this position the valve is locked against tum
ing movement. In order to open the valve the
stem I6 is forced inwardly against the tension
of the spring I9 and the pin i1 is moved down
ward out of the notch 30 into the cut away por
tion 29 of the sleeve and thus the valve by a
turning action of the stem is rotated to an open
position, the pin traveling in said cut away por
tion until it reaches the end thereof, when the
rotation of the plug is stopped and the valve is
25 in a wide open position. When in this position,
and at all times, the spring i 9 is forcing the valve
stem upwardly and causing a frictional engage
ment of the pin I‘! with the wall of the cut away
portion of the sleeve and thus preventing the
30 easy turning of the plug. At the same time the
spring is exerting a downward pressure on the
plug to hold it tightly in the tapered opening.
In order to remove the stem from the plug,
the two ends 22 and 23 of the spring 2|, extend
ing into the slot, are forced together, thus with
drawing the spring from the groove 2|’ and
allowing the stem and spring 2| to move outward
from the opening IS in the plug. This allows
a new spring to be inserted at any time. In
assembling the stem and valve plug the spring
is is ?rst inserted in the plug and the stem’
pushed therein, the pin i1 traveling downwardly
in the slot IS. The spring 2| is then slipped over
the stem and the ends are then brought together,
so that the spring can be forced downward be
tween the stem and the inner wall of the opening
in the plug with the turned ends in the slot.
This downward movement is continued until the
spring 2| is forced downwardly until it snaps
into the groove 23’.
From the foregoing it will be seen that the
plug valve i0 and its stem l6, together with the
Heretofore, this opera
the tact that the spring l9 would frequently 10
become lost. Furthermore considerable di?lculty
was encountered in assembling these parts after
the greasing operation.
In the modi?cation shown in Figure 5 the
exterior of the upper end of the plug is provided 15
with a groove 34 in which a contracting locking
spring 35 is sprung and the spring engaging the
pin ll of the stem forms a stop to limit the
upward movement thereof.
Having thus described our invention, what we 20
claim is:
A valve comprising a housing, a valve plug
therein having a reduced hollow extension, said
extension formed with a circular recess and a
longitudinal slot, a valve stem extending snugly 25
into said hollow extension and longitudinally
movable therein, a coil spring at the bottom of
said hollow extension for holding said stem in
extended position, a pin carried by the stem and
extending through said longitudinal slot for look 30
ing the stem against rotation in the plug and
locking the plug against rotation in the housing
in its closed position, said stem above said pin
having a reduced portion to provide a shoulder
on said stem and an annular space of substantial 35
width between said reduced portion and the valve
plug, and an expansible split ring insertable
through said space for engagement in said cir
cular recess and engageable by said shoulder for
preventing the stem from passing from the plug
when removed from the housing, said split ring
being formed with bent ends extending into said
longitudinal slot to facilitate assembly and dis
assembly of said ring.
Без категории
Размер файла
328 Кб
Пожаловаться на содержимое документа