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Патент USA US2125513

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Aug. 2, 1938.
-
w. H. MARTIN
2,125,513 v
FLUID PRESSURE INDEXING VALVE
Filed'Aug. 20, 1936
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Aug. 2', 1938-
w. H. MARTIN
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2,125,513
FLUID PRESSURE INDEXING VALVE
Filed Aug. 20, 1956
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Patented Aug. 2, 1938
‘ 2,125,513
I UNITED STATES
PATENT OFFICE
2,125,513
FLUID PitESSUBE INDEXING VALVE
William H. Martin, Detroit, Mich.
Application August 20, 1936, Serial No. 97,007
12 Claims. (Cl. 60—54.5)
My invention has for its object to provide an
automatic indexing valve for causing by ?uid
pressures sequential or periodic operations of elements or devices or parts of apparatuses‘ or ma
_5 chines controlled by the elements.
Thus, by my invention, a plurality of welders
for welding parts together may be suitably
mounted and sequentially operated. Similarly
the ‘invention may be used to produce sequential
10 stamping of a large number of parts or sequen
tial riveting of a plurality of parts or the se
The moving parts of the valve 1 are enclosed
in a shell 6. The walls of the shell have open
ings and passageways that communicate with the
pressure means 2 and the pressure devices 3.
A rotatable disc ‘I having a diameter substan 6
tially the same as the diameter of the interior
surface of the side wall of the shell 6 is located
upon a raised bearing surface 9 formed on the
bottom of the shell. The underside of the disc 1
is provided with a circular recess ll forming a
peripherally disposed ?ange part or rim l2hav
quential or timed operations of a machine or the
ing a bearing surface II that is located on the
simultaneous operations of groups oI-‘controlled
bearing surface 9. The contacting surfaces of
the disc and the bottom are preferably ground
to produce substantially an oil seal between the 16
chambers i6 and I1 formed by the disc within
devices.
'
The invention'may be contained in structures
of different forms and used for a great variety
of purposes. To illustrate a practical application
of the invention, I have selected an indexing,
valve as an example of the various structures that
20 contain the invention and shall describe the
15
structure selected hereinafter. The indexing
valve is illustrated in the accompanying draw
the shell.
Each of the pressure devices is connected by
means of a pipe ID with a passageway l9 extend
ing through the wall of the shell l and communi
‘
‘eating with the
chamber H. The openings I!
are located in the raised bearing surface I and
within the inner perimeter of the annular rim l2.
.
Fig. 1 illustrates a top view of the indexing The pressure means 2 is connected to the cham
ber ii of the valve by means of the pipe 2|
valve and indicates diagrammatically its con
through which its actuating pressure is trans
nection in an apparatus having parts that are
mitted to the valve. The chamber I1 is con
sequentially operated by a ?uid pressure means.
Fig. 2 is a side view of the valve shown in Fig. 1. nected with the pressure means 2 by means of
a pipe 22 to return the oil to the pressure means.
Fig. 3 is a view of a section of the valve taken
30 on the plane of the line 3-—-3 indicated in Fig. 2. ‘ The pipes 21 and 22 are preferably centrally con
nected to the top and bottom walls of the valve.
Fig. 4 is a view of a vertical section of the valve.
The valve l is automatically operated by a The disc ‘I is provided with an opening 23 located
in a boss extending inwardly from the annular
?uid pressure means 2 to connect the pressure
means to the pressure devices '3 and produce rim l2 and so as to be located in registering rela
tion with the passageways it in succession upon
35 operations of one or more of the pressure devices
rotatlve movement of the disc. Thus, when the
upon rise in pressure of the pressure means.
opening 23 registers with any one of the open
. Preferably, oil is used as the pressure medium.
It ?lls the interconnecting passageways that] d ings IS, the rise in pressure of the pressure means
2 is transmitted through the oil-located in the
from the pulsating pressure means 2 to the va ve
pipe 2|, the chamber It, the opening is, and
40 l and from the valve to the pressure devices 2.
The pressures produce periodic ?ow of small the pipe It to the particular pressure device 3
with which the connection is established and
quantities of the oil from the pressure means 2
causes the pressure device 3 to perform its par
to the valve l and from the valve l'to one or
ticular function by the pressure that is trans
more of the pressure devices 3. Upon reduction
mitted to it. Thus, the pressure devices may be
45‘ of the pressure of the pressure means 2, oil is
returned to the valve and the pressure means by sequentially operated, or may be operated in any
the return movement of the just previously oper-. desired order or in groups according to the con
trol element or a step by step mechanism that
ated pressure device or devices. If desired,
means may be provided for controlling the length may be used in rotating the disc and according
to the connections between the pressure devices
50 of the high or rising pressure periods or the
intermediate low or. reducing pressure periods. and the indexing valve.
In the form of construction shown, the disc ‘I
Also operations of the pressure devices respon
ings.
sive to the pressure means may be separated by
one or more periods of high pressure produced
55 by the pressure means.
30
-
45
50
is moved step by step to produce registration
of the opening 23 with the passageways IS in
succession ‘and corresponding sequential opera 65
Z
'2,125,518
tions of the pressure devices 3. A piston 28 is
also an outward movement of the piston 26.
slidably supported in a cylinder 21 located in the
valve. The‘cylinder 21 may be provided with a
?anged head 28 that fits within a boss 28 tan-
Upon reduction of the pressln'e, the piston 25
which has been outwardly pressed during the
' gentially protruding from the cylindrical side
wall of the shell 6 to locate the aris'of the piston
parallel and in proximity to a line tangential
to the disc ‘I. The cylinder-21 is secured to- the
' shell 6 by means or the screws ii that extend
through the ?ange part of the head 28 and into
the boss 29. The exterior diameter of the cyl
inder 21 is considerably less than the interior
pressure period is moved inward by the pressure
of the spring 32. The dog having engaged a se
quentially disposed tooth x§I moves the disc ‘I a
short distance upon its return movement. The
disc ‘I first operates to establish return connec
tion for the oil, from the pressure device 3 to the
chamber i1 and through the pipe 22 to the pres 10
.sure means 2. This releases the pressure in the
pressure device. The piston
of the pressure
diameter of the boss 2! which forms a recess in ‘device is pressed outward by the spring 54 and
which is located a spring 32. IZ‘he spring 22 is 'when the oil pressure is reduced, the spring 54
located intermediate the head is of the cylinder of the pressure device 3 causes the return of the 15
I'l’and a pair of adjustable locknuts 33 located piston of the pressure device and discharge of the
' on'one end of an enlarged part ll of the piston - oil from its cylinder which causes a return move
26. The spring 32 is a compression spring and‘ ment of the oil along the pipes l8 and 22. Upon
operates to resiliently return the piston 26' when the completion of the return stroke of the pisten
28, the opening 23 is brought into registration
20 it is forced outwardly by the hydraulic pressure
produced in the chamber it of the valve l by with another of the openings i9 which establishes _
the pressure means 2. The piston is guided in
connection between the pressure means- 2 and
its movements not only by the cylinder 21, but
another of the pressure devices 3.
'
- Upon production of succeeding changes in pres
sure, the pressure devices are sequentially con
also by an inwardly projecting boss" through
25 which the piston extends.
I
._ Lock nuts I: are threaded on to an ‘end por
nected and operated to produce riveting or weld
tion ll of the piston and on the side of the boss 36
opposite to thet'on which the lock nuts-ll are
ing or timed eperations of a machine or apparatus
located.
or other i'unctions for which they may be designed
Thus, the lock nuts 33 and 39 may be . or peculiarly constructed.
adjustably located with reference to the boss ii
to adjust the extent oi’ the stroke that may be
made by the piston, both as to its outward move
ment relative- to the disc 1 and the shell pro
duced by the hydraulic pressure and also as to its
35 inward return movement produced by the pres
sure of the spring 32.
~
The enlarged part E1 of the piston 26 is pro
' vided with a recess 44 in which is located a dog
1
1. In 'a ?uid pressure indexing valve having
two chambers, a plurality of pressure devices con
nected to one chamber, a pulsating pressure means
connected to the other chamber, a movable mem
ber having a passageway for selectively closing 35
the connection of each pressure device with the
. said one chamber and connecting it with the said
other chamber to produce operation of the pres
46 that is spring pressed by means of the spring . sure devices at least one at a time by the pulsating
40 41 located intermediate the bottom of the re
cess H and the nose of the dog (8.
The dog
pressure of the pressure means.
2. A ?uid pressure indexing valve having a pair
It is pivotally supported by the pin 48 and is
of chambers, a plurality of pressure devices con
pressed towards the periphery ofthe disc ‘I. It ‘ nected to one of the chambers, a pressure means
extends through a slot 48 icrmed in the boss connected to the other of the said chambers for
producing pressure in the said other chamber and
45 38 and prevents rotation of the piston about, its
to the said one chamber for withdrawing ?uid
The disc 1 is provided with a ‘plurality of fro-m the said one chamber,. a movable member
ratchet teeth II spaced about the axes of the for connecting the pressure devices with the said
axis.
,
>
_
I
disc the same angular distance that the open
50 ings'l9 are spaced from each other. The stroke
of the piston 26 is adjusted by the lock nuts
33 and I! to produce engagement of a tooth
II by the dog 46 upon each succeeding return
movement of the piston. Preferably the angular
movement of the disc ‘I produced by the piston
is such as to cause registration of the opening
, 23 with the openings l9 sequentialh to produce
. sequential operation of the pressure devices 3.
The cylinder 21 may be connectedat its outer
60 end with the return pipe 22 to’ draw from the
cylinder any oil that may pass the piston dur
'ing its operation. "'
In the operation or the indexing valve, the
pressure means 2 which is constructed to pro
65 duce pulsating pressure in the oil ?lled passage
ways 01 the apparatus may'comprise a single
cylinder pump having a cylinder 4 and a recipro
cahle piston 5. The cylinder 4 receives oil from
the reservoir Ill through an opening it when‘
70 uncovered by the piston 5. The piston I may
be operated by any suitable motor or other actue
ating means 53. Each pulsation will cause oper~ '
ation of the pressure device 2 having a piston
l5 and a cylinder 20 to which connection is cs7
75 tablished through the openings 23 and I8 and
other chamber for operating the pressure devices
and subsequently restoring the connections of the
pressure devices with the said one chamber for
returning the. ?uid to the said pressure means.
3. A ?uid pressure indexing valve having a pair
or chambers, a plurality of pressure devices con- '
nected to one of the chambers, a pressure means
cennected to the other of the said chambers ior
producing pressure in the said other chamber and
to the said. one chamber for withdrawing oil from
‘the said one chainber, a movable member for con
necting the pressure devices with the said other
chamber for operating the pressure devices, means
> operated by the pressure means for actuating‘ the
movable members and subsequently restoring the
connections of the pressure devices with the said
one chamber for returning the ?uid to the said
I pressure means.
.
4. In a ?uid pressure indexing valve, a mov--v
able member taming two chambers within the
valve, a-plurality of pressure deyices connected
to one of the said chambers and a pulsating "'
pressure means connected to the other of the said '
chambers for producing pulsating pressures in the
said other chamber, the movable member having
a passageway for connecting the connections of
the pressure devices with the said other chamber 75'
3
9,125,513
in succession for sequentially operating the pres
sure devices by the pulsating pressures produced
and to the said one chamber for receiving ?uid
by the pressure means.
ber operated by the pressure means for connect
ing the pressure devices with the said other cham
from the said one chamber, and a movable mem
mm a ?uid pressure indexing valve, the valve
having a movable member forming two chambers, ‘ her to operate the pressure devices and to subse
a plurality oi pressure devices connected to one quently and sequentially connectthe precedingly
chamber, a pressure means connected to the other
chamber, means for operating the pressure means
to- produce a pulsating pressure, a resilient means
10 operated by the pressure means for moving the
member during low pressure periods to connect
the said connections of the pressure devices with
the said other chamber in succession and produce
operation of the pressure devices by the pulsating
pressures sequentially during high pressure peri
.15
ods of the pulsating means.
.
6. In a ?uid pressure indexing valve, a movable
member forming two chambers within the valve,
a plurality of pressure devices connected to one of
20 the said chambers and a pulsating pressure means
connected to the other of the said chambers for
producing pulsating pressures in the said other
chamber, the movable valve member having a
passageway for connecting the pressure devices
producing alternately high and low ?uid pres
sures, and means operated by the pressure means '
for connecting the pressure devices with the
pressure means during the low pressure periods
to sequentially operate the pressure devices dur
ing' the succeeding high pressure periods and to
connect the pressure devices with the pressure
means during the low pressure periods to return
the ?uid from the pressure devices in the low
pressure periods to the pressure means.
20
11. In a ?uid pressure apparatus, a plurality
of pressure devices, a cylinder and piston, a reser
voir for liquid communicating with one end 0!
sequentially operating the pressure devices by the
the cylinder, means for reciprocating the piston,
the cylinder having a passageway opened by the 25
piston upon the completion of its non-working
pulsating pressures produced by the pressure
stroke and closed upon the initiation 01 its work
' with the said other chamber in succession for
25
operated pressure device with the said one cham
ber for returning the ?uid to the pressure means.
10. In a ?uid pressure apparatus, a plurality
of pressure devices, a ?uid pressure means ‘for
means, and means operated ‘by the said pressure
means for actuating the movable member.
7. In a ?uid pressure apparatus, a plurality of
30
pressure devices, a ?uid pressure means for pro
ducing changes in ?uid pressure, and a resilient
means operated by the pressure means during
high pressure periods and operative to connect
the, pressure devices in succession with theplies
ing stroke, an indexing valve having two cham
bers, the reservoir and a. plurality of pressure de
vices connected to one chamber and the cylinder
connected to the other chamber, and a movable
member having a passageway for disconnecting
the pressure device with said one chamber in suc
cession and connecting them with the said other
chamber to produce operation oi.’ the pressure de 85.
vices in succession during the high pressure pe~
riodsproduced by the piston and for connecting
pressure means during the high pressure periods ~ the precedingly operated pressure device with the
following each low pressure period.
said one chamber to return the ?uid to the reser
sure means during the low pressure periods to
sequentially operate the pressure devices by the
8. In a?uid pressure apparatus, a plurality of
pressure devices, a ?uid pressure means for pro
45
ducing means for producing changes in ?uid
vices during succeeding high pressure periods and
pressure, a ?uid pressure operated means oper
the ?uid from the pressure devices to the pressure
55
vice by the pressure produced by the piston.
ducing pressure pulsations in the ?uid, and means‘
operative during low pressure periods for con
necting the pressure devices to the pressure
means to sequentially operate the pressure de
' to connect the precedingly operated pressure devices with the pressure means for the return of
so
voir through the said one chamber during the pe
riod-iollowing the operation oi the pressure de
means.
9. A ?uid pressure indexing valve having a
pair of chambers, a plurality of pressure devices
connected to and having means for returning
12. In a ?uid pressure apparatus, a plurality
of pressure operated devices, a ?uid pressure pro
ated by the ?uid pressure produced by the pres
sure producing means during high pressure pe
riods, and means coacting with the pressure oper
ated means for connecting the pressure operated 50
devices in succession with the pressure producing
means during thellow pressure periods to sequen
?uid to one of the chambers, a pressure means
tially operate the pressure operated devices by the
pressure producing means during the high pres
connected to the other oi.’ the said chambers for
sure periods following each low pressure period.
_.producing pressure in the said other chamber
'
,
WILLIAM H. MAR'ITN.
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