close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2128391

код для вставки
.Aug. 30, 1938
_
H, ABRAMSON
2,128,391
DEVICE FOR PRODUCING MULTIPLE FLASH SIGNALS
‘Filed March'24, 1957
2 Sheets-‘Sheet 1
@1.
‘
7'1
14
1%?
a"
5’
7%
1'4
.s'
91
I01
81
, Z",'_>
12’
'
'
.29
a2
I
/
21
a
19
x
47
I
45
16
_/6
T
15/
.5
4
4%; INZENTOR
LWNZ/ L
Aug. so, 1938. '
H. ABRAMSON
2,128,391
I
_DEVICE FOR PRODUCING MULTIPLE FLASH SIGNALS
- Filed March 24, 1937
2 Sheets-Sheet
5
44
61/
5/
w
10'
/
BY
,
INVENTOR
2
Patented Aug. 30, 1938
.
2,128,391
UNITED STATES PATENT QFFICE
2,128,391
DEVICE FOR PRODUCING MULTIPLE FLASH
SIGNALS
Hugo Abramson, Lidingo, Sweden, assignor to
American Gas Accumulator Company, Eliza
beth, N. J., a corporation of New Jersey
Application March 24, 1937, Serial No. 132,752
In Sweden April 3, 1936
9 Claims. (Cl. 67-111)
My invention relates to ?ashing gas burners
and particularly to ?ashing burners which are
operated by variation in the pressure of the gaseous fuel. Such devices include a valve for regu-5 lating ?ow of gas to the burner, which valve is
Further objects and advantages of my invention
will be apparent from the following description
considered in connection with the accompanying
drawings which form a part of this speci?cation
and of which:
5
operated by means of a member such as a diaFig. 1 is a diagram showing the ?ow of gas to
phragm movable in response to variations in gas- - the burner plotted against time;
eous pressure. The gaseous fuel is supplied at a
Fig. 2 is a more or less diagrammatic cross-sec
substantial constant pressure to the diaphragm tional view of one embodiment of my invention;
10 chamber where it builds up a pressure su?icient
Fig. 3 is a similar view of another embodiment; 10
to open the valve. The areas of the passages for and
?ow of gas to and from the diaphragm chamber
Fig. 4 is a similar View of a third embodiment.
are so proportioned that, when the valve is open
gas ?ows to the burner faster than it is admitted
This results in a reduction in
Referring more particularly to Fig. 2, reference
character I designates a container in which is dis
posed a ?exible diaphragm 2 de?ning with the 15
pressure and the diaphragm closes the valve.
Consequently, gaseous fuel is supplied intermittently to the burner which hence gives a ?ashing
light.
20
For certain purposes, such as signalling at sea,
it is desirable that multiple ?ash signals be obtained. For instance, it may be desired to have
the light give three equally spaced ?ashes followed by a longer period of darkness and then by
25 three more equally spaced ?ashes. This may be
accomplished by connecting two diaphragm controlled valves in series, the ?rst in the line of ?ow
having a lower frequency than the second. For
upper part of the container a diaphragm chamber
3. A conduit 4 supplies gaseous fuel under pres
sure to chamber 3 through a throttling device 5.
A conduit 6 leads from chamber 3 and ?ow
through this conduit is controlled by means of a .20
valve member 7 which may be pivoted between
knife edges 8. The internal cross-sectional area
of conduit 6 is greater than that of throttle 5,
whereby gas will ?ow out of chamber 3, when
valve 1 is open, faster than it ?ows in.
21'!
Secured to valve member ‘I is an arm 9 which
engages within an aperture formed in a projection
ID on the diaphragm. Theaperture is somewhat
15 to the chamber.
the eXample given, the ?rst Valve Should remain
30 open long enough to permit the passage of suf?cient gas to cause the second valve to open and
larger than arm 9 so as to constitute a lost motion
connection.
Thus the diaphragm may move-a 30
certain amount without moving the valve mem
close three times. However, as a practical matter,
it is impossible to so nicely set the two valves
that the second will pass, for instance, in three
35 openings the exact amount of gas which is passed
by the ?rst valve in one opening. If the ?rst
valve permits a slightly excessive amount of gas
to pass, this will accumulate in the connecting
conduit and in the diaphragm chamber of the
her. The valve member 1 and the lower end i I
of conduit 6, which forms the valve seat, may be
of magnetized material, whereby the valve mem
ber remains against seat II until acted upon by 30
the diaphragm. A spring [2 is disposed between
the diaphragm and the bottom of container l and
acts to move the diaphragm upwardly. The space
I3 between the diaphragm and the bottom of the
40 second valve until there is an excess amount prescut which is su?icient to cause an extra opening
50 provide means for remedying the above defect.
container is in communication with the atmos- 40
phere. The apparatus so far described may be
termed aprimary ?asher.
Conduit 6 leads to a secondary ?asher which is
in all respects similar to the one just described
and like parts are designated by similar reference 45
characters to which have been added a prime.
However, the strength of spring I2’ in the sec
ondary ?asher is less than that of spring l2 in the
primary ?asher in order that the valve 1' may be
operated on smaller variations of pressure than is 50
In accordance with my invention I provide pres~
sure responsive means for automatically regulating either the amount of gas passed by the ?rst
valve or by the second valve so that these amounts
55 bear the proper relation to eachother.
required to operate the valve member 1. This
gives the secondary ?asher a higher frequency
than that of the primary ?asher.
Conduit 6’ leading from the secondary ?asher
leads to a gas burner I4.
55
of the second valve. Thus, a device adjusted to
operate with three ?ashes separated by a longer
period of darkness, every so often will give four
45 ?ashes instead of three. Likewise, if the ?rst
valve permits an insu?icient quantity of gas to
pass, every so often two ?ashes instead of three
will be obtained.
One of the objects of the present invention is to
2
2,128,391
A conduit I5 communicates with diaphragm
chamber 3 of the primary ?asher and leads to a
container I6 which is divided into two chambers
by means of a ?exible diaphragm I1. Conduit I5
CI communicates with chamber I8 formed beneath
the diaphragm. Chamber I9, formed on the other
side of the diaphragm, communicates with con
duit 6 through a conduit 20. A spring 2| is dis
posed within chamber l9 and a set-screw 22 is
next cycle there will be a residue of gas present
in the conduit 6 and the chamber 3' which will
cause the diaphragm 2' to open the valve 1’
somewhat sooner than would otherwise be the
case. This residue will accumulate during suc
cessive cycles and consequently will eventually
amount to enough to ‘actuate. the diaphragm 2'
an extra time, thus every so often resulting in
four consecutive ?ashes of the burner I4 in
1O
10 provided for adjusting the tension of the spring. 1 stead of the desired three.
This extra gas present in the conduit Iiv and
Container it and associated elements constitute
an automatic pressure responsive regulator, as chamber 3' is utilized to regulate the amount
will be described hereinafter.
The above described device operates as fol
15
25
30
35
40
of gas passed by the primary ?asher. Assume
?rst that‘ no excess gas has been passed by the
primary ?asher. Under this condition, a pressure 15
lows:
’
Gas under pressure is constantly admitted to will exist in conduit 6 and chamber 3’ during dark
diaphragm chamber 3 of the primary ?asher‘ period T4 which‘ is determined by the pressure
through conduit 4 and throttling device 5. Valve at which diaphragm 2' closes valve ‘I’. This
member 7 at this time is assumed to be in contact pressure, is exerted through conduit 20 on the
with seat II and consequently pressure is built ' upper side of diaphragm IT. As the pressure 20
up within chamber 3. This pressure moves the builds up ,in chamber 3 of the primary ?asher
diaphragm 2 downwardly against the force of While valve "I is closed, this pressure is com
spring I2 and, when su?icient movement of the municated through conduit I5 to chamber I8 and
diaphragm has taken place to take up the play displaces diaphragm I‘I upwardly against the
between members 9 and I0, valve member ‘I is force of spring 2| and the pressure in chamber 25
I9. Due to this displacement of diaphragm I'I,
moved to an open position. Gas then ?ows
through conduit I5 and throttling device 5' to more gas ?ows in through throttle 5 - before
within diaphragm chamber 3' of the secondary the pressure in chamber 3 is built up su?iciently
to open valve 1 than would be the case if con
flasher where it builds up pressure until dia
phragm 2' opens valve member ‘I’. Gas then ?ows tainer I6 and the associated parts constituting .30
the regulator were omitted. When valve ‘I does
to the burner I4 where it is ignited by a con
open, the gas pressure on opposite sides of dia
stantly burning pilot light, not shown. The in
ternal cross_sectional area of conduit 6" is larger phragm I'I, is equalized, and spring 2| moves the
diaphragm downwardly, thus forcing some of
than that of throttle 5' and hence gas ?ows
out of diaphragm chamber 3' faster than it is the gas in chamber l8 back into chamber 3,
admitted thereto, causing the pressure therein from whence it passes into conduit 6. Spring 2|
is so adjusted that the displacement of dia
to decrease and diaphragm 2' closes valve mem
phragm I‘! is such that the total amount of gas
ber ‘I’, thus shutting off ?ow of gas to the burn
er and the light is extinguished. The pressure passed by the primary ?asher in one opening of
in chamber 3' now begins to'build up» again and valve 1 is-as equal as possible to the amount
the cycle of operations is repeated. The primary
passed by the secondary ?asher in three openings
?asher is adjusted so that valve member ‘I re
of valve ‘I’.
mains open and gas is supplied through conduit
6 to the secondary ?asher until the valve of the
45 secondary ?asher is opened and closed a certain
number of times, for instance three. At this
time, the pressure in chamber 3 has dropped suf?
ciently so that valve member 'I is closed and the
‘?ow of gas to the secondary ?asher is stopped.
50 ‘There then results a period of darkness lasting
until the pressure in chamber 3'is again built up
However, perfect adjustment is a practical
impossibility and the primary ?asher may pass
an excessive amount of gas. As above described, 45
to a value su?icient to open valve member 'I'.
valve 1 is closed, this latter pressure will displace
diaphragm I'I less than it did in the previous
cycle. Hence, when the gas pressure on opposite
sides of diaphragm I1 is equalized by the open 5-55
ing of valve ‘I, the diaphragm will be moved back
The above cycle of operation is graphically
shown in Fig. 1. The secondary ?asher is ad
55 justed so that the valve member ‘I’ remains open
during the time T1 and remains closed during the
time T2. The primary ?asher is adjusted so that
the valve ‘I remains open during the time T3 and
remains closed during the time T4. There hence
results a ?ashing period T3 during which time
three ?ashes T1 are produced. This is then fol
lowed by a long dark period T4. The valve ‘I thus
performs a complete cycle in the times T3 plus
T4, and this may be termed a function period of
65 the valve ‘I.
>
However, it is practically impossible to so ad
just the two ?ashers that the amount of gas
passed by the primary ?asher in the time T3 is
exactly equal to the amount passed by the sec
70 ondary ?asher in the same length of time. If
the primary ?asher permits an excessive‘ amount
of gas to pass, the pressure in the chamber 3’ will
have started to increase for the fourth time at
the instant the valve 1 of the primary ?asher
75 closes. Hence, when the valve 1 opens in the
there will then be-left an excessive residue of
gas in conduit 6 and chamber 3! after valve ‘I has
closed and after valve ‘I’ has closed for the third
time._ Consequently, a higher pressure will be
exerted on the upper side of diaphragm I1 and,
as pressure builds up in chambers 3 and I8 while
through a correspondingly smaller distance and
less gas will be forced back through conduit I5
into chamber 3. Therefore, the primary ?asher
will pass less gas during the time valve ‘I is open .{
than it did in the previous cycle. Thic compen
sates for the excessive amount previously passed
with the result that the excessive amount is
never able to accumulate su?iciently to open
valve ‘I’ of the secondary ?asher an extra time.
It will thus be seen‘that the pressure of the
gas remaining in conduit 6 and chamber 3' dur
ing the dark period T4 is utilizedto ‘regulate the
amount of gas ‘which the primary ?asher permits
to pass. If this‘ pressure is high it is an indi 170
cation that the primary ?asher has permitted
too much gas to pass and this high pressure is
utilized to' reduce the amount of gas" passed
by the primary ?asher in the next cycle. Thus,
the relationship between the amount of gas'pass;
2,128,391
ing through the primary ?asher and through
the secondary ?asher is maintained constant
within close limits.
As will be seen, the pressure of the residue gas
5 in conduit 6 is practically equal to the maximum
pressure required to open the valve of the pri
mary ?asher (and hence the maximum pressure
existing in chamber I8) minus the pressure of
3
erted against spring 29. Consequently if the re
sidual pressure in conduit 5, and chamber 3’, and
hence in chamber 3i , is higher, less pressure will
be required in chamber 3 to open valve 1 than
would be the case if the residual pressure were 5
lower. If the valve 1 opens at lower pressure the
gas will pass through conduit 6 at a slower rate
than it would if the pressure were higher. Con
the spring 2|. Consequently by regulating the sequently less gas will be passed by the primary
\ 10
10 tension of this spring by means of the sets'crew ?asher.
On the other hand, if in the previous cycle the
‘22 the desired residual pressure in conduit 6 and
primary ?asher has not passed enough gas this
chamber 3' may be obtained.
In Fig. 1 the end of the ?nal period T1 is shown will be re?ected in a lower residual pressure in
as coinciding exactly with the end of period T3. conduit 6 and chamber BI and a higher pressure
15 As previously explained the valve 1’ may close ' in chamber 3 will be required to open the valve. 15
for the third time while valve 1 is still open, thus This higher pressure will result in gas passing
through conduit 5 at a more rapid rate. Conse
2terminating the ?nal period T1 earlier than pe
riod T3 is terminated. In such an event, the quently, the amount of gas passed by the primary
automatic regulator operates to reduce the ?asher is controlled by the residual pressure and
20 amount of gas passed by valve 1 during its next the same ultimate result is obtained with this ap~1 20
paratus as with the apparatus shown in Fig. 2.
function period, as above described. Conse
Instead of regulating the amount of gas passed
quently, over a plurality of function periods,
by the primary ?asher in order to maintain equal
both valves pass the same total quantity of gas.
the amounts passed by the two ?ashers, the same
It may also happen that the valve 1 closes be
ultimate result may be obtained by regulating<125
25 fore valve 1’ has closed for the ?nal time, where
upon the ?nal period T1 is not terminated until the amount passed by the secondary ?asher. An
after the termination of period T3, but extends apparatus operating in this manner is shown in
over slightly into the period T4. However, under Fig. 4.
In Fig. 4 the primary ?asher may be identical
this condition, there is no excessive residual pres
--30 sure in chamber 3’ and conduit 6 and the effect; with that shown in Fig. 2 and corresponding parts 30
is not cumulative, as the valve 1' in three open
ings has passed the same amount of gas as has
the valve 1 in one opening. Thus, under either
condition, both valves pass the same total quan
are designated by the same reference characters.
the pressure drop therethrough.
In the apparatus shown in Fig. 3 control is ef
The secondary ?asher, however, consists of a
container 35 divided by a diaphragm 36 into
chambers 3'! and 38, both chambers being closed
to the atmosphere. Conduit 6 communicates 35
through throttling device 5' with chamber 31.
A valve member 'l' is controlled by diaphragm 3B.
A conduit 39 connects conduit ‘3 with chamber 38,
the conduit being provided with a throttling de
vice 49. A spring 4! is disposed in chamber 38 "40
and bears upwardly against the diaphragm 36.
In the device above described, if the residual
pressure in conduit 6 and chamber 31 is‘ high
at the time valve 7 closes, this pressure during
the dark period T4 builds up in chamber 38 45
through throttling device Ml. Consequently,
when valve '3 in the primary ?asher again opens
fected in this manner. In this apparatus the
primary ?asher includes a container 25 divided
and admits gas to chamber 3?, a higher pressure
in this chamber is required in order to move the
35 tity of gas during a plurality of function periods
of the valve 1.
In the device shown in Fig. 2, ‘the pressure
‘.of the gas required to operate the diaphragm 2
\to open valve 1 remains constant. However,
40 ‘}the amount of gas passing through the primary
?asher may be varied if the pressure at which
valve 2’ opens is varied. If the valve opens- at a
lower pressure, the ?ow of gas through the valve
controlled opening will be less, inasmuch as ?ow
‘45 of gas through an ori?ce or‘ conduit varies with
50 \‘into three chambers by means of two diaphragms
.26 and 21. The lower part of container 25 is of
greater diameter than. the upper part and hence
the area of diaphragm 21 is greater than that
of diaphragm 26. The diaphragms are connected
55 together by means of a rigid member 28, which.
also engages with play the arm 9 on valve mem
ber ‘l. A spring 29 is disposed between the bot
tom of container 25 and lower diaphragm 2?.
Conduit 6 communicates with a secondary
gol?asher which, as shown, may be identical with
~._that shown in Fig. 2 and the same reference
characters have been employed.
A conduit 33 connects conduit 6 with the space
3| between diaphragms 2t and 21.
65
It will be seen that the resultant force acting
on valve member I is equal to the pressure of
the gas acting on the upper side of diaphragm
26, minus the pressure of the gas acting on the
lower side of this diaphragm, plus the pressure
70 of the gas acting downwardly on diaphragm 21,
minus the pressure of the spring 29 acting up
wardly. Inasmuch as diaphragm 21 has a larger
surface than diaphragm 26, an increase in pres
sure of the gas within chamber 3! will increase
75 the resultant downwardly acting gas pressure ex
diaphragm 36 suf?ciently to open valve 1’. When, 50
however, the valve does open the gas passes into
conduit 6’ to the burner at a higher rate due to
this higher pressure. Consequently, thelsecond~
ary ?asher consumes more gas when the residual
pressure is high than when it is low.
Thus, it 55
the primary ?asher tends to pass too much gas,
the secondary ?asher is regulated to consume
this gas and in this way the ratio between the
amounts of gas passing through the two ?ashers
is maintained constant.
‘60
While I have shown three more or less speci?c
embodiments of my invention, it is to be under
stood that this has been done for the purposes of
illustration only and is not to be considered as
limiting the scope of my invention, which is to be t 65
determined by the appended claims viewed in
the light of the prior art.
What I claim is:
1. In a device for producing multiple ?ash sig
nals by an illuminating gas burner, a ?rst valve. 70
means responsive to variations in pressure of the
illuminating gas for intermittently opening and
closing said valve at regular intervals, a second
valve connected in series with said ?rst valve,
means responsive to variations in pressure of the 76
I
2,128,391
.illuminating 'gas for intermittently opening and
closing said second valve at regular intervals a
plurality of times while said ?rst valve is open,
and means responsive to Variations in pressure of
the illuminating gas for automatically maintain
ing equal the amounts of gas passed by said
valves during a plurality of function periods of
said ?rst valve.
2. In a device for producing multiple ?ash sig
nals, a ?rst valve, means responsive to varia
tions in pressure of gas ahead of said valve for
6. In a device for producing multiple ?ash sig
nals, a ?rst valve, means responsive to varia
tions in pressure of gas ahead of said valve for
opening and closing said valve at regular inter
vals, a second valve connected inseries with said
?rst valve, means responsive to variations in pres
sure of gas ahead of said second valve for'open
ingand closing said second valve at regular in
tervals a plurality of times each time said ?rst
valve is open, and means responsive to pressure 1310
between said valves for regulating the ‘quantity
opening and closing said valve at regular inter
of gas passed by said second valve so as to main
vals, a second valve connected in series with said
?rst valve, means responsive to variations in
tain substantially equal the quantities of gas
v215 pressure of gas ahead of said second valve for
opening and closing said second valve at reg~
l
passed by the two valves during a plurality of
function periods of said ?rst valve.
2-15
7. In a device for producing multiple '?ash sig
ular intervals a plurality of times each time said
?rst valve is open, and means responsive to pres“
sure between said valves for maintaining equal
@320 the quantities of gas passed by said valves dur
ing a plurality of function periods of said ?rst
nals, a ?rst valve, means responsive to varia
tions in pressure of gas ahead of said valve for
opening and closing said valve at regular inter
vals, a second valve, means responsive to varia- Q20
valve.
3. In a device for producing multiple ?ash sig
nals by an illuminating gas burner, a ?rst valve,
5.25 means responsive to variations in pressure of the
valve for opening and closing said second valve
at regular intervals a plurality of times each
illuminating gas for intermittently opening and
closing said valve at regular intervals, a second
valve connected in series with said ?rst valve,
means responsive to variations in pressure of the
330 illuminating gas for intermittently opening and
closing said second valve at regular intervals a
plurality of times while said ?rst valve is open,
and means responsive to variations in pressure
of the illuminating gas for regulating the amount
“33.5 of gas passed by said ?rst valve so as to main
tain equal the amounts of gas passed by the two
valves during a plurality of function periods of
said ?rst valve.
4. In a device for producing multiple ?ash sig
nals by an illuminating gas burner, a ?rst valve,
means responsive to Variations in pressure of the
illuminating gas for intermittently opening and
closing said valve at regular intervals, a second
valve connected in series with said ?rst valve,
means responsive to variations in pressure of the
.45 iluminating gas for intermittently opening and
closing said second valve at regular intervals a
plurality of times while said ?rst valve is open,
and means responsive to variations in pressure
".50
of illuminating gas for regulating the amount of
gas passed by said second valve so as to main
tain substantially equal the amounts of gas
passed by the two valves during a plurality of
function periods of said ?rst valve.
5. In a device for producing multiple ?ash sig
.155 nals, a ?rst valve, means responsive to variations
tions of pressure of gas ahead of said second
time said ?rst valve is open, conduit means con
necting said valves in-series, means de?ning a a
closed. space, a displaceable diaphragm dividing “
said space into a ?rst chamber and a second
chamber, the ?rst chamber being connected
ahead of said ?rst valve and the second chamber
being connected to said conduit between saidL
valves, and resilient means for resisting displace
ment of said diaphragm by ‘gas in said ?rst
chamber.
8. In a device for producing multiple ?ash sig
nals, a container, a ?rst diaphragm and a sec-,1
ond diaphragm disposed in said container, said‘
?rst diaphragm .having less area thansaid sec—
ond diaphragm and said diaphragms being‘rig
idly connected so as tomovein unison, means for
supplying gas to the chamber bounded by said
?rst diaphragm, a conduit leading fromsaid
chamber, a valve controlled by .movement of said
diaphragm for regulating ?ow of gas fromsaid
chamber through said conduit, a second valve
fed by gas from said conduit, means responsive to _
variations of pressure of gas ahead of said second ’“‘45
valve for opening and closing said second valve
at regular intervals during the time said ?rst
valve is open, means establishing communication
between said conduit and the chamber formed
between said ?rst and second diaphragms, and Q50
resilient means urging said diaphragms in a di
rection to close said ?rst valve.
9. In a device for producing multiple ?ash. sig
nals, a ?rst valve, means responsive tovariations
in pressure of gas ahead of said valve for open- 5355
in pressure of gas ahead of said valve for open
ing and closing said valve at regular intervals,
ing and closing said valve at regular intervals,
means de?ning a closedspace, a diaphragm divid
ing said space into a ?rst chamber and a second
chamber, a conduit leading from said ?rst valve ‘
to said ?rst chamber, a second valve controlled
a second valve connected in series with said ?rst
valve, means responsive to variations in pressure
.60
of gas ahead of said second valve for opening
and closing said second valve at regular intervals
a plurality of times each time said ?rst valve is
open, and means responsive to pressure between
said valves for regulating the quantity of gas
65 passed by said. ?rst valve so as to maintain sub
stantially equal the quantities of gas passed by
the two valves during a plurality of function peri
ods of said ?rst valve.
by movement of said diaphragm for regulating
?ow of gas from said second chamber, and means
including a throttling device connecting said
conduit with said second chamber.
HUGO ABRAMSON.
55.6.5
Документ
Категория
Без категории
Просмотров
0
Размер файла
776 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа