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Патент USA US3091942

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June 4, 1963
E. F. WEBB
3,091,932
TIME DELAY DEVICE
Original Filed May '7, 1958
/NVENTOR
EDMOND /-.' WEBB
5V
MYLW
A TTORNE Y5
United States Patent 0
1
3,091,932
Patented June 4, 1963
2
supply of ?uid under pressure being transmitted through
3,091,932
THVIE DELAY DEVICE
Edmond F. Webb, Franklin, Mich., assignor to The Del
man Company, Cookeville, Tenn., a corporation of
Tennessee
Original application May 7, 1958, Ser. No. 733,621, now
Patent No. 2,970,336, dated Feb. 7, 1961. Divided
and this application Nov. 1, 1960, Ser. No. 66,578
2 Claims. (Cl. 60-545)
This invention relates to time delay devices and more
particularly to a time delay device enclosing a ?uid which
is responsive to another ?uid under pressure for effecting
a reciprocal movement of an actuating member at diiferent
rates of movement.
An object of this invention is to provide an improved
time delay device.
Another object of this invention is to provide a time
the hose 41 to the time delay device 10.
As will be described hereinafter in detail, the time
delay device 10 is adapted to operate the valve 11, for
example to permit the passage of fluid therethrough,
concurrently with the receipt of ?uid under pressure
through the hose 41. Then upon a depressurization of
the ?uid in the hose 41, the device 10 is conditioned to
initiate a time delay action so that the valve 11 con
10 tinues to pass ?uid therethrough for a timed interval,
after which the device 10 operates to shutoff the valve 11.
Referring now particularly to FIGS. 2-6, the time
delay device 10 is comprised generally of an elongated
cylindrical body or housing 46 which includes a pair of
15 hollow end sections 47 and 43 arranged in a face to face
relation and separated in .a fluid tight manner by a valve
plate unit 49. The end section 47 includes a tubular ex
tension member 50 which is adapted to be ?tted to the
delay device which can be interposed in a ?uid trans
hose 41 (FIG. 2), and the end section 48 is provided with
mitting line of an operative unit and mechanically con 20 an elongated extension 51 connected at its outer end to
nected to another operative unit to actuate and to de
a threaded connector 52 secured to an open threaded end
actuate the latter unit in a timed sequence responsive to
53 of the valve unit 11. A bore 54 is formed through
the pressure of ?uid in the line.
the square extension 51.
A further object of this invention is to provide a time
A ?exible diaphragm 56 is mounted within the end
delay device including a triumvirate of power transmit~ 25 section 47 with its peripheral edge secured in a ?uid tight
ting devices each of which is responsive to another and
manner at the junction 57 between the end section 47
the ?rst of which is fluid responsive to the actuation of
and the valve unit 49. The valve plate unit 49 includes
an operative unit, the second of which is operatively con
a plate member 53, which forms a ?uid tight wall between
nected to another operative unit, and the third of which
the end sections 47 and 48, an inlet valve unit 59 secured
is operable to transmit power from the former to the 30 to the plate member 58, and an outlet valve unit 61 which
latter operative unit at a differential rate of transmission.
is also secured to the plate member 53. A circular washer
Another object of this invention is to provide an ar
member 62 is secured to the side of the plate member 58
rangement for attaining the above mentioned objectives
facing the end section 43, and a passage 63 is formed
centrally in the plate member 58 for a purpose herein
which is economical to manufacture, easy to install, and
35 after described. An opening 64 (FIG. 4) is formed in
effective in service and operation.
These objects and other advantages will become readily
the periphery of the valve plate unit 49 whereby to open
apparent by reference to the following description when
the end section 48 to the atmosphere, .a plug member 66
taken in conjunction with the accompanying drawings,
being normally inserted in the opening 64.
The inlet valve unit 59 comprises generally a conven
wherein:
FIG. 1 is a perspective view of one embodiment of
the invention in combination with a conventional valve
tional one-way ball type check valve mounted adjacent an
unit;
ble to permit a ?ow of ?uid from the end section 47
FIG. 2 is an enlarged longitudinal sectional view of the
time delay device of this invention, with the internal
to prevent .a reverse ?ow or a ?ow from the end section
mechanism thereof shown in a normal or rest position,
opening 67 formed in the plate member 58, and is opera
through the opening 67 to the end section ‘43, but arranged
48 through the passage 67 to the end section 47.
The outlet valve unit 61, which operates as a bleed
and showing a portion of the valve broken ‘away;
FIG. 3 is a view similar to FIG. '2 wherein the internal
mechanism of the time delay device is shown in an opera
valve, comprises a generally U-shaped retainer 68 (FIGS.
tive position;
pair of transversely spaced legs 71 formed with outwardly
5 and 6) having a base portion 69 connected between a
extended ?anges 72 at their outer ends to adapt the re
FIG. 4 is an enlarged fragmentary sectional view of
tainer 68 for mounting to the side of the plate member
certain parts of FIG. 2, with some parts broken ‘away
58 facing the end section 47. The junction between
for the purpose of clarity; and
each
leg 71 and the base portion 69 is in the form of a
FIGS. 5 and 6 are enlarged detail views of the re
shoulder 73 against which the circular head portion 74
tainer element of FIG. 4.
55 (FIG. 4) of a bleed plug 75 is adapted to seat.
This application is a division of my co-pending applica
The bleed plug 75 includes the circular head portion
tion ?led May 7, 1958, Serial No. 733,621, now Patent
74 and a shaft end 77 comprising two portions 77a and
No. 2,970,336. With reference to the drawing, the time
77b. The portion 77a is the outermost portion ‘and has
delay device of this invention, indicated generally at 10,
a diameter slightly smaller than the portion 77b, while
is illustrated in FIG. 1 in operative engagement with a 60 in turn the inner portion 77b has a diameter slightly
commercially available valve 11 for regulating the ?ow
smaller than that of the opening 63 in the plate member
of either water, gas, or air therethrough. The device 10
58. A coil spring 76 is arranged between the retainer
is also shown ?uid connected to a hose 41 which leads to
seat 69 and the head portion 74 to bias the bleed plug
shaft 77 through the opening 63.
a unit (not shown) the operation of which results in a
3,091,932
3
4
Mounted within the end section 48 is a cup-shaped re
tainer 78 the concave side of which faces the outer end
of the section 48. An actuator head 79, mounted cen
trally of the retainer 78, is connected at one end with an
actuator Wire 8t), extended through the bore 54 of the
extension ‘51, and connected at its outer end to a plunger
81 Within the valve unit 11, the movement of which is
‘adapted to open and close the unit iii. A depression 82
(FIG. 3) formed in the other end of the actuator head 79
in FIG. 3, due to the expansion force of the coil spring
'76. This movement of the plug 75 locates the shaft por
tion 77b within the opening 63.
Upon a releasing of the ?uid pressure in the hose 41,
and thus releasing the ?uid pressure against the diaphragm
56 (FIG. 3), the liquid trapped between the diaphragm
88 and the plate member 58 is now subjected to the pres
sure of the biased retainer 78 and the diaphragm 88 tend
ing to move to the right to thus return to its normal posi
is adapted to receive the pointed end 83 (FIG. 4) of 10 tion. This pressure forces a slow bleeding of the liquid
the bleed plug shaft 77. The retainer 78 is biased toward
back through the space between the portion 77b of the
a position, as shown in FIG. 2, by a coil spring 84 which
bleed shaft 77 at a rate of flow slower than that through
is arranged between the base portion 37 of the retainer 73
the inlet valve 59, whereby the diaphragm 88 and retainer
and a circular shoulder 36 formed within the outer end
78 move slowly toward the right. Before the diaphragm
of the end section 48.
'
15 83 reaches its inoperative position of FIG. 2, the actuator
A ?exible diaphragm 88 is secured at its peripheral edge
in a ?uid tight manner to the junction 89‘ (FIG. 2) be
tween the end section 48 and the valve plate unit 49,
and is adapted to assume a normal position best indicated
bead 79, at its depression 82, contacts the bleed shaft
point 83 and forces the bleed plug 75 to the right, as
viewed in FIG. 2, and against the compression of the
spring 76. This movement locates the shaft portion 77a
in PEG. 2, wherein the diaphragm 88 is contiguous with 20 within the opening 63, and as the area between the shaft
the surface of the convex side of the retainer facingthe
77 and the opening 63 is increased by virtue of the smaller
valve plate member 58.
'
diameter of the portion 77a relative to that of the portion
Of note, the internal arrangement of the time delay
7712, the rate of escape of the liquid through the opening
63 is now increased and concurrently, the diaphragm 88,
by the separation of the end sections 47 and 48 by the 25 retainer 78 and also the Wire 80 move faster to the right.
valve plate unit 49 are each divided into two expansible
Thus, a sequential slow-fast liquid bleed occurs, i.e., an
compartments by virtue of the diaphragm 56 mounted
initial slow bleed to delay the action of the plunger 81
within the section 47 and by the diaphragm 88 mounted
in opening the valve unit 11, and a ?nal fast bleed to as
within the section 48 (FIG. 2). It is noted additionally
sure a quick positive movement of the plunger 81 to its
that by connecting the tubular extension 50 0f ‘the end 30 position for opening the valve unit 11. Upon actuation,
section 47 to the hose 41, the diaphragm 56 is responsive
then, of a unit (not shown) to pressurize the line 41, the
to the ?ow and lack of ?ow of pressurized ?uid through
time delay device 10 concurrently initiates a time delay
the hose 41.
operation calculated to maintain the valve unit 11 in a
device 10 is such that the two cavities or chambers formed
For the purpose of transmitting power generated by the
‘shut-off condition for an interval of time subsequent to
movement of the diaphragm 56 from its normal position 35 the de-actuation of the unshown unit to depressurize the
(FIG. 2) to an actuated position (FIG. 3), so as to in
line 41.
turn move the diaphragm 88 and and the retainer 78
Although a preferred embodiment of the invention has
against the compression of the coil spring 84, a liquid such
been disclosed herein, it is not to be so limited as various
as oil is inserted into the section 48 through the opening
modi?cations and alternate constructions may ‘be made
64 (FIG. 4). Of importance, the liquid, initially trapped
between the diaphragm 88 and the plate member 58,
bleeds through the space 74} provided between the passage
63 and the bleed plug shaft 77 and into the compartment
between the plate member 58 and the diaphragm 56.
Thus, the time delay device 10 includes a triurnvirate
of responsively related power transmitting means, namely:
the diaphragm 56; the liquid trapped on both sides of the
plate member 58 but movable therethrough due to the
40 therein which are within the full intended scope of the
invention as de?ned in the appended claims.
I claim:
'
l. A time delay device including a housing having a
partition wall therein to form a pair of chambers, with
each of said chambers having an opening therein, a dia
phragm unit in each of said chambers, said diaphragm
units being arranged at opposite sides of said wall, a liquid
disposed on both sides of said wall in contacting relation
with said diaphragm units, with the diaphragm unit in a
valve units 59 and 61; and the diaphragm 38.
In the operation of the time delay device, let it be as 50' first of said chambers being ?uid connected with a source
sumed that the position of the elements disposed therein
of ?uid under pressure through the opening in said ?rst
as viewed in FIG. 2 correspond to an open position of the
chamber for response to the flow of ?uid into and out of
valve unit 11 wherein a ?uid is passed therethrough.
said ?rst chamber, a reciprocally movable actuating mem
Upon operation of a unit (not shown) to supply ?uid
ber inthe second of said chambers movable through the
opening in said second chamber and connected to the dia
under pressure through the hose 41 and into the time delay
phragm unit in said second chamber, means in said sec
end section 47, the diaphragm 56 is forced to the left, as
ond chamber for biasing said actuating member toward
viewed in H6. 3. This movement of the diaphragm 56
said wall, and a pair of valve means on said well provid
in turn'forces the liquid between the diaphragm 56 and
ing for a reversed ?ow of liquid therethrough at dissimilar
the plate member 58 through the inlet valve unit 5? at a
certain rate of ?ow and into the compartment between 60 rates, such that the ?ow to move said actuator member
in a direction away from said Wall is at a rate faster than
the diaphragm 88 and the plate member 58.
the rate of ?ow in a reversed direction effected by said
The increased quantity and pressure of the liquid in
biasing means, with one of said valvermeans being oper
turn forces the diaphragm and the retainer 78 from their
able to an open position therefor by movement of the ac
FIG. 2 position to their FIG. 3 position, whereby the ac
tuator head 79 and the wire 80 are also moved to the left 65 tuating member in said reversed direction.
2. A time delay device including a housing having a
(FIG. 3). The resulting movement of the actuator wire
partition wall therein to form a pair of chambers, each
80 forces the plunger 81 further into the valve unit 11
of said chambers having an opening therein, a reciprocat
where it may be assumed the ?ow of liquid therethrough
ing working member in each of said chambers being ar
is stopped. Thus, concurrently with the application of a
fluid pressure through the hose 4]., the time delay device 70 ranged at opposite sides of said wall to partition each
chamber, a liquid disposed on both sides of said wall in
operates the valve unit 11 to close.
It may be noted that as the actuator head 79' moves to
contacting relation with said Working members, the Work
ing member in the ?rst of said chambers being ?uid con
83 of the bleed plug shaft 77, whereby the plug 75 is
nected with a source of ?uid under pressure through the
moved from its position of FIG. 2 to a position best shown 75 opening in said ?rst chamber for response to the ?ow of
the left (FIG. 3), it moves out of contact with the point
3,091,932
Ea
a
6
?uid into and out of said ?rst chamber, a reciprocally
movable actuating member in the second of said cham
bers movable through the opening in said second cham
ber and connected to the working member in said ‘second
chamber, resilient means in said second chamber for bias
ing said actuating member toward said Wall, and a ?rst
an open position vby movement of the actuating member
in said reversed direction.
and second valve means on said wall providing for a re
versed ?ow of liquid therethrough at dissimilar rates,
such that the ?ow to move said actuator member in a
direction away from said wall is at a rate faster than the
rate of ?ow in a reversed direction e?ected by said bias
ing means, with one of said valve means being operable to
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,805,802
2,281,538
Browne ______________ __ May 19, 1931
Leichsenring _________ __ Apr. 28, 1942
2,730,354
2,852,965
Burris _______________ __ Jan. 10, 1956
Wallace _____________ __ Sept. 23, 1958
2,903,854
Harty _______________ __ Sept. 15, 1959
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