U.S. patent number 3,552,436 [Application Number 04/673,459] was granted by the patent office on 1971-01-05 for valve controlled fluid programmer.
Invention is credited to Weldon R. Stewart.
United States Patent |
3,552,436 |
Stewart |
January 5, 1971 |
VALVE CONTROLLED FLUID PROGRAMMER
Abstract
A fluid programmer utilizing a plurality of manually actuated
valves for programming fluid-controlled machines to enable the
function, sequence or timing thereof to be accurately and rapidly
varied, by altering or adjusting the fluid circuits thereto
emanating from a plurality of fluid supply sources which feed into
the programmer, and which are selectively directed from the
programmer through desired outlet circuits for the fluid to the
machine being controlled.
Inventors: |
Stewart; Weldon R. (Austin,
TX) |
Family
ID: |
24702741 |
Appl.
No.: |
04/673,459 |
Filed: |
October 6, 1967 |
Current U.S.
Class: |
137/883;
137/878 |
Current CPC
Class: |
F16K
11/22 (20130101); F15B 13/00 (20130101); Y10T
137/87837 (20150401); Y10T 137/87877 (20150401) |
Current International
Class: |
F16K
11/22 (20060101); F16K 11/10 (20060101); F15B
13/00 (20060101); F16d 001/00 () |
Field of
Search: |
;137/608,612.1 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Chi; James Kee
Claims
I claim:
1. A fluid programmer comprising a housing having a plurality of
passageways, means sealing off said passageways from one another, a
fluid pressure supply means for each passageway, a plurality of
passages contained in said housing having inlet ends communicating
with each of said passageways and constituting the only outlets
thereof, outlet conduits leading from the housing and communicating
with said passages, and manually actuated valves mounted in the
housing and movable to selectively open and close the inlet ends of
said passages.
2. A fluid programmer as in claim 1, each of said passages
including an enlarged portion containing a normally closed check
valve which is opened by the pressure in the inlet end of said
passage when the manually actuated valve thereof is in an open
position and which closes to prevent a back feed through said
passage.
3. A fluid programmer as in claim 1, said housing having a
plurality of channels disposed crosswise of said passageways each
of which communicates with and forms a part of a plurality of said
passages and to each of which one of said outlet conduits is
connected.
4. A fluid programmer as in claim 3, said housing being of
laminated construction including a top member provided with said
passageways and in which said valves are slidably mounted, a bottom
member provided with said channels, and at least one intermediate
member provided with said passages connecting the passageways and
channels.
5. A fluid programmer as in claim 1, each of said passages having a
separate outlet conduit leading from an outlet end thereof.
6. A fluid programmer as in claim 1, said housing being elongated,
said passageways being disposed longitudinally of the housing, and
a longitudinal row of said valves extending into each passageway
for controlling the passages leading therefrom.
7. A fluid programmer as in claim 6, said housing including a
plurality of transverse channels each communicating with the
passages of a transverse row of said passages and each controlled
by one of said valves of each of the passageways, and one of said
outlet conduits communicating with and leading from each of said
transverse channels whereby fluid may be selectively supplied
through the programmer to each of said outlet conduits from each of
said passageways.
8. A fluid programmer as in claim 7, said fluid supply means
discharging into corresponding ends of the passageways and said
outlet conduits leading from the bottom of the housing.
9. A fluid programmer as in claim 1, said housing having bores
opening outwardly of its upper surface and downwardly into said
passageways, each of said valves having a stem extending through
one of said bores and provided, adjacent its lower end, with a
sealing ring for sealing the inlet end of one of said passages in a
closed position of the valve said valve stem having a second
annular sealing ring engaging said bore in either the lowered,
closed position, or the raised, open position of the valve for
sealing said bore in both said positions.
10. A fluid programmer as in claim 9, and a stop member carried by
said valve stem between said seals for engaging portions of the
housing to limit movement of the valve toward either an open of
closed position.
Description
BACKGROUND OF THE INVENTION
This invention relates to the art of programming fluid-controlled
machines.
The prior art discloses programmers or selectors employing slidably
mounted valve members having ports movable into and out of
registration with one another for creating selected passages
between a common supply chamber containing the fluid under pressure
and a plurality of outlet ports.
SUMMARY
A primary object of the present invention is to provide a
programmer of extremely simple construction for receiving fluid
from a number of inlets and for selectively supplying the fluid
from each inlet to any one of a plurality of outlets each connected
to a machine to be controlled, so that any one of a number of
patterns of fluid circuits can be created between the fluid supply
sources and the machine.
Another object of the invention is to provide a device of extremely
simple construction employing a number of manually actuated valves
for selectively opening and closing the outlets thereof and wherein
the pattern of the fluid circuit or circuits can be visually read
by observing the positions of the different valves.
A further object of the invention is to provide a programmer having
means to prevent back feed from any of the outlets thereof and
which could otherwise change the pattern to which the programmer
was set.
Various other objects and advantages of the invention will
hereinafter become more fully apparent from the following
description of the drawings, illustrating presently preferred
embodiments thereof and wherein:
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a top plan view, partly broken away, of a preferred
embodiment of the fluid programmer;
FIG. 2 is an enlarged fragmentary longitudinal sectional view
thereof, taken substantially along a plane as indicated by the line
2-2 of FIG. 1;
FIG. 3 is an enlarged fragmentary cross-sectional view, taken
substantially along a plane as indicated by the line 3-3 of FIG.
1;
FIG. 4 is an enlarged fragmentary bottom plan view of a top member
of the programmer housing;
FIG. 5 is an enlarged fragmentary plan view of a second member of
said housing;
FIG. 6 is an enlarged fragmentary top plan view of a third member
of the housing;
FIG. 7 is an enlarged fragmentary top plan view of a fourth or
bottom member of the housing;
FIG. 8 is a detailed vertical sectional view, partly in elevation,
taken substantially along the line 8-8 of FIG. 3;
FIG. 9 is an enlarged fragmentary longitudinal sectional view
illustrating a slight modification of the programmer; and
FIG. 10 is an enlarged fragmentary cross-sectional view of said
modified form.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring more specifically to the drawing, and first with
reference to FIGS. 1 to 8, the programmer in its entirety is
designated generally 12 and includes an elongated laminated housing
designated generally 13 composed generally of a top member 14, a
second member 15, which is disposed immediately beneath the top
member 14, a third member 16 which is disposed beneath the member
15, and a bottom member 17. Each of said members 14, 15, 16 and 17
extend from end-to-end and from side-to-side of the housing 13.
The under side 18 of the top member 14 is recessed to provide
spaced apart, substantially parallel longitudinally extending
passageways 19, each of which extends to adjacent the ends of said
member 14. Inlet nipples 20 have restricted threaded ends 21 which
engage threaded openings 22 in one end of the member 14, so that a
nipple 20 communicates with each passageway 19, as seen in FIGS. 2
and 4. The member 14 has a plurality of bores 23 which open
upwardly through its top surface and downwardly into the
passageways 19, so that a row of bores 23 communicates with each
passageway 19.
The member 15 constitutes a flat plate having bores 24 extending
from top to bottom therethrough and which are disposed in alignment
with the bores 23. A sealing gasket 25 is interposed between the
members 14 and 15 and around the passageways 19 for sealing off
said passageways from one another. The member 16, which is
substantially thicker than the member 15, is recessed to provide
upwardly opening sockets 26 which are disposed to align and
communicate with the bores 24 but which are substantially larger
than said bores. The member 16 has threaded bores 27 which open
upwardly into the sockets 26 and outwardly through the bottom
surface of said member. A sealing gasket 28 is interposed between
the members 15 and 16 and around the sockets 26 for sealing off the
upper ends of the sockets 26 from one another and the lower ends of
the bores 24 from one another.
The bottom member 17 has channels or grooves 29 formed in its top
surface and which provide passages which are disposed crosswise of
said member 17 and of the housing 13. Each groove 29 communicates
with a transverse row of sockets 26 through the bores 27 thereof
which open into said groove 29, as seen in FIG. 3. Each groove 29
communicates with a threaded bore 30 of the member 17 which opens
upwardly into said groove and outwardly through the underside of
said member. A sealing gasket 31 is interposed between the
underside of the member 16 and the upperside of the member 17 and
around the passages 29 for sealing off said passages from one
another. The members forming the housing 13 are secured together by
screw fastenings 32 which extend through the corners thereof and
which compress the gaskets 25, 28 and 31 between said members.
A valve 33 is associated with each bore 23. As best seen in FIG. 8,
each valve 33 includes an elongated stem 34 which extends through
the bore 23 thereof and which has an annular groove 35 near its
lower end to receive an annular sealing ring 36, and a second
annular groove 37, which is disposed above and spaced from the
groove 35, to receive a second annular sealing ring 38. The valve
stem 34 has a third annular groove 39 disposed between the grooves
35 and 37 and nearer the groove 35, to receive a flat split ring
40. When the valve 33 is in a closed position, as seen in FIG. 8,
the ring 40 abuts the top surface 41 of the plate 15 around the
bore 24 thereof, which is in alignment with said valve, and the
lower sealing ring 36 is disposed in and seals said bore, and the
upper sealing ring 38 is disposed in the lower portion of the bore
23 for sealing the bore 23. When the valve 33 is in an open
position, as seen in FIG. 3, the ring 40 abuts the top wall of the
passageway 19 around the bore 23 in which said valve is mounted,
the sealing ring 38 engages the upper part of said bore 23 for
sealing the bore, and the sealing ring 36 is disposed above the
bore 24, with which the valve aligns, so that said bore 24 forms a
communicating passageway between the passage 19 and the socket 26
which registers with said bore 24. It will also be noted that the
passageways 19 are of a width substantially greater than the
diameter of the valves 33 so that said valves, when in a closed
position, will not obstruct fluid flow through the passageways. The
upper portions 42 of the valve stems 34 form handles by which the
valves can be grasped and moved between their open and closed
positions.
A ball valve 43 is disposed in each socket 26 and is supported by a
weak compression spring 44 in the upper end of which a part of the
ball seats. The springs 44 are contained in the sockets 26 beneath
the balls 43 and have their lower ends resting on and supported by
externally threaded tubes 45 which are detachably mounted in the
threaded bores 27.
An outlet nipple 46 has a restricted threaded upper end 47 which
engages the bore 30 so that a nipple 46 is provided for each
channel 29. A flexible conduit or hose 48 leads from each nipple 46
to a machine, not shown, to be controlled by the programmer 12. A
flexible conduit or hose 49 connects with each nipple 20 and said
hoses 49 lead from any suitable source of fluid supply. Posts or
supports 50 may extend through the housing 13, adjacent its
corners, and may be secured to any suitable supporting member, not
shown, for supporting the programmer 12 so as to afford adequate
clearance for the conduits 48.
From the foregoing, it will be readily apparent that fluid may be
supplied to all or selected ones of the passageways 19 through the
conduits 49 and fittings 20 for pressurizing said passages.
Selected ones of the valves 33 of one or more of the passageways 19
may be lifted upwardly to open positions. The fluid under pressure
will then pass from the passageways 19 through the open bores 24 to
unseat the ball valves 43 which are disposed therebeneath, as seen
in FIGS. 2 and 3, so that the fluid can flow around the open balls
and escape from the sockets 26 thereof through the tubes 45, into
the channels 29 with which said tubes communicate. The associated
bores 24, sockets 26, and tubes 45 thus form passages for supplying
fluids to the channels 29 or to selected ones of said channels,
which fluids will escape through the outlet nozzles 46 and conduits
48 thereof to the machine being controlled.
The housing 13 is shown provided with five longitudinal rows of
valves 33, each row containing twelve valves making a total of
sixty valves. Each longitudinal row of twelve valves controls the
passage of fluid from one passageway 19 to the twelve channels 29,
and each transverse row of five valves 33 controls the passage of
fluid from the five passageways 19 to a single channel 29, so that
a multiplicity of different patterns or combinations may be
programmed by the device 12 to the machine being controlled.
The springs 44 are only of sufficient strength to support the ball
valves 43 in closed positions seated against the lower ends of the
bores 24. Said ball valves and springs are provided to prevent back
feed into a passageway 19, which is not pressurized, due to a back
pressure in one of the channels 29, and which would result in the
fluid possibly escaping from the passageway 19 through the port 24
of another open valve of said passageway to incorrectly alter the
programming of the machine.
FIGS. 9 and 10 illustrate a slight modification whereby a greater
selectivity of the programming is accomplished by omitting the
bottom member 17 and the gasket 31, and by removing the tubes 45
and engaging the threaded end 47 of an outlet nipple 46 in each of
the threaded bores 30, so that a total of sixty outlets 46 and
conduits 48 is provided, one for each valve 42 to provide a much
greater selectivity in the program arrangements.
Various modifications and changes are contemplated and may be
resorted to without departing from the function or scope of the
invention.
* * * * *