close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2410984

код для вставки
Nov. 12, 1946.
T. E. LAWLESS
2,410,984
.SAFE‘I‘Y DEVICE
Filed July 5, 1944
Inventor
Patented Nov. 12, 1946
>
. 2,410,984
UNITED STATES PATENT OFFICE
2,410,984
SAFETY DEVICE
Timothy E. Lawless, Marcellus Falls, N. Y. 7
Application July 5, 1944, Serial No. 543,575
6 Claims. (01. 137-152)
2
1
This invention relates to safety devices and,
suitable bolts 24 to provide a relatively air 01‘
more particularly to such devices adapted to be
steam tight seal.
used in connection with a steam line or the like.
Slidably mounted within the cylindrical por
tion of body I I is a, cylindrical sleeve 30 provided
A primary object of this invention is the pro
vision of a; device, including a, valve in a steam
line, adapted to close the line upon the surge of
.
'
at one end with a closure member 3| forming
a valve disk, suitably beveled at its edges as at
32, adapted to engage a, valve seat 33 formed
within body II. Sleeve 30 is provided with a
liquid, such as water, into the line to preclude
damage to the apparatus operated by the steam.
large number of apertures or perforations _34
An additional object is the provision of such
device which will readily permit the passage of 10 therethrough; and has secure-d to its upper side
a rack 35 adapted to ?t within chamber 20, it
steam through the line rbut immediately close the
here being pointed out that the dimensions of
valve upon the surge of any water thereinto.
chamber 30 are such as to permit limited move
A secondary object is the provision of an in
ment of rack 35 therein. The sliding movement
dicator, in association with such a valve and
safety device which will indicate the position of 15 of sleeve 30 is restricted in one direction by valve
seat 33 and in the other direction [by an inte
the valve and hence the amount of steam pass
riorly disposed circumferential collar 36 posi
ingthrough the line at all times.
tioned within body I I.
Additional objects reside in the combinations
Rack 35 is adapted to coact with a pinion 40
of elements, features of construction, and ar
rangements of parts, all as will be more fully 20 ?xedly secured to an axle 4|,‘the ends of which
are; journaled and sealed in suitable apertures in
pointed out hereinafter, and shown in the accom
the
side walls 2| forming chamber 20. Axle 4|
panying drawing, wherein there is shown a pre
is secured as by a pin or set screw 42 to one end
ferred form of this inventive concept.
of a bellcrank lever 43 positioned exteriorly of
In the drawing:
Figure 1 is a side sectional view of a steam
line embodying the safety device of the instant
invention, and
>
body I I. The other end of bellcrank lever 43 en
gages one end of a, spring 44 the opposite end of
which is secured to a lever 45 which lever forms
an actuating device for a suitable gauge or pres
sure indicator 46 mounted at a suitable point on
Figure 2 is a sectional view taken along the
line 2-2 of Figure 2 as viewed from the right, 30 steam line I5. Spring 44 may serve as a means
certain parts thereof beingr shown in elevation.
for retaining bellcrank 43 in a desired position,
Like reference numerals refer to like parts
to retain sleeve 30 and‘ valve disk 3| in open
throughout the several views of the drawing.
valve position with respect to valve 33. While
1 Having reference now to the drawing, a safety
the spring 44 may be utilized as the sole means
device for steam lines is generally indicated at 35 for accomplishing this function, if desired a
Ill. Safety device I0 is comprised of a bodypor
weight 41 may be mounted on the arm of bell
tion I I provided With flanges I2 at either end,
crank lever 43 and held in position by a set screw
which ?anges are adapted to be secured by a
48. ‘Movement of the weight along the extend
plurality of bolts I3 to adjacent ?anges l4 com
ing arm of the bellcrank will vary the force re
prising the ends of sections of pipe i5 comprising
quired to move sleeve 30 into valve closing posi
portions of a steam line or the like, steam being
tion.
-
adapted to flow therethrough in the direction
From the foregoing the operation of the device
indicated by the arrow in Figure 1. Valve body
‘should now be readily understandable. Steam
II is generally cylindrical in form but is pro
flows‘ through pipe line I5 in the sleeve 30 and
vided with a depending portion I6 forming a re
passes " outwardly through apertures 34 around
cess H in the base of the device, serving as a
valve disk 3I and continues in uninterrupted flow
trap for such liquid as may flow thereinto in a
through the pipe line. However, in the event a
manner to be described hereinafter. At the base
surge of water, such as might be occasioned by
of trap I6 is a suitable threaded outlet valve I8,
foaming, or too high a level in the boiler, should
of any desired construction to permit the drain 50 come through the steam pipe, the extra pressure
ing off of liquid trapped in recess IT. The upper
thus exerted against the rear surface of valve
portion of body II is provided with a chamber
disk 3| would overcome the weight or spring ten
sion normally keeping the gylinder open and
23 formed by extending walls 2| so formed as
cause the closed end or valve disk 3I of cylinder
to provide a ?ange 22 at the top thereof. A cover
plate 23 is secured to ?ange 22 as by means of
30 to seat in valve seat 33 and thus cut oil the
2,410,984
3
4
?ow of both steam and water, The increased
pressure will cause the valve to remain closed
until the cause of the water in?ux into the pipe
can be determined and the trouble corrected, thus
precluding the possibility of damage to the device
mounted in said body, means forming a trap for
liquids in said body adjacent said valve, said
sleeve being open at its other end, and of a di
ameter substantially equal to that of said inlet,
a rack, on said sleeve, a pinion associated with
said rack, means associated with said pinion nor
operated by the ?owing steam. Upon correction
mally biasing said valve to open position, but
of the trouble, the water may be drained from
body I l and trap I‘! by merely opening the escape
adapted upon the surge of liquid into said sleeve
valve 1 8, whereupon the parts will return to oper
to permit closure of said valve under the impetus
ating position and ‘when steam is turned again 10 of pressure of said liquid,,said last-named means
comprising a lever secured to said pinion and
into the pipe, the valve will remain open until
such time as its use is again required in the man
ner above described.
From the foregoing it Will now be seen that
there is herein provided a safety device accom
plishing all the objects of this invention including
many advantages of great practical utility and
commercial importance. It will also be seen that
the use of this device in a steam line serves to
means normally retaining said lever in position to
hold said valve away from said valve seat, and an
indicator associated with said lever for indicating
the position of said valve and hence the amount
of steam passing through said line.
.4. In a safety device for steam lines, in combi
nation, a body having an inlet and an outlet
positioned in said line, a valve seat in said body
preclude all possibilitylof damage to steam oper 20 at said outlet, a valve comprised of a hollow sleeve
ated apparatus such as might be occasioned by
having a relatively large number of perforations
an in?ux of water into such apparatus.
,
therein normally to ‘permit unrestricted ?ow of
As many modi?cations ‘may be made in this in
ventive concept it is to be understood that all
matter hereinbefore described or shown in the
vaccompanying drawing is to be interpreted as
merely illustrative :and not in a limiting sense.
I claim:
1. In a safety device for steam lines, in combi
nation, a body having an inlet and an outlet
positioned in said line, a valve seat in said body
at said outlet, a valve comprised of a hollow sleeve
having a relatively large' number of perforations
vtherein normally to permit unrestricted flow of
steam therethrough closed at one end to form a
valve disk adjacent said valve seat slidably
mounted in said body, means forming a trap for
liquids in said body adjacent said valve, said
sleeve being open at its other end, and of a di
steam therethrough closed at one end to form a
valve disk adjacent said valve seat slidably
mounted in said body, means forming a trap for
liquids in said body adjacent said valve, said
sleeve being open at its other end, and of a di
ameter substantially equal to that of said inlet,
a rack on said sleeve, a pinion associated with
said rack, and means associated with said pinion
normally biasing said valve to open position, but
adapted upon the surge of liquid into said sleeve
to permit closure of said valve under the impetus
of pressure of said liquid, said last-mentioned
means comprising a lever secured to said pinion
means normally retaining said lever in position
to hold said valve away from said valve seat, and
an indicator associated with said lever for indi
cating the position of said valve and hence the
ameter substantially equal to that of said inlet, 40 amount of steam passing through said line, said
means normally retaining said lever in position
a rack on said sleeve, a pinion associated with
to hold said valve away from said valve seat
said rack, and means associated with said pinion
including a spring connected between said lever
normally biasing said valve to open position, but
and said indicator.
adapted upon the surge of liquid into said sleeve
5. In a safety device for steam lines, in combi
to permit closure of said valve under the impetus ‘
nation, a body having an inlet and an outlet
of pressure of said liquid.
positioned in said line, a valve seat in said body
2. In a safety device for steam lines, in com
at said outlet, a valve comprised of a hollow sleeve
bination. a body having an inlet and an outlet
having a relatively large number of perforations
positioned in said line, a valve seat in said body
at said outlet, a valve comprised of a hollow sleeve iii therein normally to permit unrestricted flow of
steam therethrough closed at one end to form a
having a relatively large number of perforations
valve disk adjacent said valve seat slidably
therein normally to permit unrestricted flow of
mounted in said body, means forming a trap for
steam therethrough closed at one end to form a
liquids in said body adjacent said valve, said
valve disk adjacent said valve seat slidably
mounted in said body, means forming a trap for 55 sleeve being open at its other end, and of a di
ameter substantially equal to that of said inlet,
liquids in said body adjacent said valve, said
a rack on said sleeve, a pinion associated with
sleeve being open at its other end, and of a di
said rack, and means associated with said pinion
ameter substantially equal to that of said inlet,
normally biasing said valve to open position, but
a rack on said sleeve, a pinion associated with
said rack, and means associated with said pinion 60 adapted upon the surge of liquid into said sleeve
to permit closure of said valve under the impetus
normally biasing said valve to open position, but
of pressure of said liquid, said last-mentioned
adapted upon the surge of liquid into said sleeve
means comprising a lever secured to said pinion
to permit closure of said valve under the impetus
and means normally retaining said lever in posi
of pressure of said liquid, said last-mentioned
tion to hold said valve away from said valve seat,
means comprising a lever secured to said pinion
and an indicator associated with said lever for
and means normally retaining said lever in posi
indicating the position of said valve and hence
tion to hold said valve away from said valve seat.
the amount of steam passing through said line,
3. In a safety device for steam lines, in com
said means normally retaining said lever in posi
bination, a body having an inlet and an outlet
positioned in said lines, a valve seat in said body 70 tion to hold said valve away from said valve seat
including a weight mounted on the extending
at said outlet, a valve comprised of a hollow sleeve
arm of said lever.
having a relatively large number of perforations
6. In a safety device for steam lines, in combi
therein normally to permit unrestricted flow of
steam therethrough closed at one end to form a
nation, a body having an inlet and an outlet
valve disk adjacent said valve seat slidably
positioned in said line, a valve seat in said body
2,410,984
5
at said outlet, a valve comprised of a hollow sleeve
having a relatively large number of perforations
therein normally to permit unrestricted flow of
steam therethrough closed at one end to form
a valve disk adjacent said valve seat slidably
mounted in said body, means forming a trap for
6
means comprising a lever secured to said pinion
and means normally retaining said lever in posi- '
tion to hold said valve away from said valve seat,
an indicator associated with said lever for indi
cating the position of said valve and hence the
amount of steam passing through said line, said
means normally retaining said lever in position
to hold said valve away from said valve seat in
cluding a weight mounted on the extending arm
ameter substantially equal to that of said inlet,
a rack on said sleeve, a pinion associated with 10 of said lever, and means whereby said weight
may be moved along the length of said extending
said rack, and means associated with said pinion
arm of said lever to vary the pressure exerted
normally biasing said valve to open position, but
thereby to retain said valve in open position.
adapted upon the surge of liquid into said sleeve
to permit closure of said valve under the impetus
TIMOTHY E, LAWLESS.
of pressure of said liquid, said last-mentioned 15
liquids in said body adjacent said valve, said
sleeve being open at its other end, and of a di
Документ
Категория
Без категории
Просмотров
0
Размер файла
424 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа