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Патент USA US2407813

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Sept. 17, 1946.
s. R. CAIN
2,407,312
MEANS FOR THE REMOTE CONTROL OF FLUID PRESSURE ACTUATED APPARATUS
‘
2 Sheets-Sheet 1
'- Filed May 10, 1944‘
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Sept° 17, 1946.
2,407,812
s. R. CAIN’
MEANS FOR THE REMOTE CONTROL OF FLUID PRESSURE AGTUATED APPARATUS
Filed May-l0, 1944
2 Sheets-Sheet 2
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2,407,812
Patented Sept. 17, 1946
UNITED STATES PATENT ‘ OFFICE
‘ 2,407,812
MEANS FOR THE REMOTE CONTROL or
FLUID PRESSURE ACTUATED APPARA
‘ TUS
Sidney Richard Cain, Henley-on-Thames,
England
Application May 10, 1944, Serial No. 534,972
a
In Great Britain April 30, 1943
3 Claims.
1
This invention relates to means for the re
mote control of the’ movements of apparatus
adapted to be moved by ?uid pressure. For ex
ample, the invention relates to the controlling
of the movements of benches, lifting tackle,
armament mountings, steering Wheels and multi
tudinous other apparatus which can be adjusted
translatively or angularly by being connected to
(Cl. 121-41)
2
the rotary element of which is operated from a
handwheel and is ported to co-operate with a
?xed ported housing for changing the direction
of ?ow‘ of the pressure fluid to and from the cyl
inder. In addition to this ?xed ported housing
there is provided an annular member disposed
about the said manually operated ported element
and also ported to co-operate with the manually
operated ported element, such annular member
a ?uid pressure driven member. The object of
this invention is to enable an operator to have 10 being operatively connected to the driven ap
paratus so that it rotates in unison with the
complete control over the movements of the ap
movement of the driven apparatus, the arrange
paratus by means of an easily operated manually
ment being that in order to maintain supply of
driven‘control device in such manner that move
pressure ?uid to the cylinder the operator must
ments applied manually to the control device are
rotate the manually operated element to main
15
translated into simultaneous movements of the
tain alignment of a port therein with a port in
?uid pressure driven apparatus ,Which ‘vary in
the annular member.
‘
direction andstop and continue in accordance
In order that the invention may be clearly
with corresponding operations of the control de
understood and readily carried into e?fect, draw
vice, whereby a wide range of adjustment is per
2.0 ings are appended hereto illustrating embodi
mitted.
ments thereof, and wherein:
According to the invention, remote control
Figure 1 is a somewhat diagrammatic sectional
means for controlling the movements of an ap
plan view showing the invention applied to the
paratus driven, or adjustable translatively, by
control of the movement of a machine tool table
?uid pressure comprises a manually operated dis
tributor adapted to be interposed between the 25 or a bench,
Figures 2, 3 and 4 are sections on the line 2-2 ‘
supply source of the pressure fluid and the driven
of Figure 1, showing normal or idle and the alter
apparatus, said distributor incorporating coop
native operational setting‘ positions of the dis
crating ported elements, one of which is manually
tributor.
operated and the other of which is power driven
in synchronism with the driven apparatus, the 30 ‘ Figure 5 is a front elevation view of Figure 1.
Figure 6 is a section on the line ‘5-45 of Figure 1.
arrangement being such that movement of the
Figure 7 is a section on the line l—‘! of Figure 1)
driven apparatus is maintainedby moving the
Referring to the drawings, the mass to be
manually driven ported element to maintain a
predetermined port alignment with the power
, moved is represented diagrammatically as a tool
driven element‘ and that movement of the driven 35 table or bench I mounted to slide on guides 2.
The table I is driven along the guides 2 by a
apparatus is arrested by arresting movement of
hydraulic ram 3, the piston rod 4 of ‘which is
the manually driven ported element to'break
connected to the table I. The ends of the cylin
such alignment, selection or change in direction
der 3a of the ram have connected to them con
of movement of the driven apparatus being ef
fected by appropriate selection of alignment of 40 duits 5 and 6 for the supply and exhaust of pres
sure ?uid, and these conduits are connected to
ports provided in the co-operating elements, such
ports 5a and 611 respectively in a ?xed housing ‘I
latter selection depending upon the direction of
of a rotary manually operated distributor, the
the movement imparted to the manually op
rotary manually operated element of which is a
erated ported element.
'
In carrying one form of the invention into 45 ported cylindrical body 8 to which is: ?tted a
handwheel 9.
practicethe apparatus to be driven can be a
The supply and return conduits leading directly
slidable bench, oscillatable mounting for a gun or
to the source of supply of pressure ?uid are in
guns, observatory telescope, steering gear or any
dicated by the reference numerals ill and I!
other appropriate‘mass adaptable for actuation
respectively
and are connected to ports Illa and
50
from a ?uid pressure driven unit. The driving
Ila in the housing‘ ‘I. The rotary body 8 com
means can be a hydraulic ram the piston of
municates with these ports its and Illa by two
which is connected to the apparatus to be moved
circumferential channels [0b and l lb respectively
by any suitable mechanical means, and the cylin
and these circumferential channels are in con
der connected at opposite ends to the source of
supply of pressure ?uid via a rotary distributor, 55 stant communication with two segmental ports
3
2,407,812
4
I90 and He by passages I003 and H12 respectively
bored through the body 8 parallel with its axis.
The part of the body 8 containing the two seg
and I3, I 4 respectively and consequently fur
ther movement of the ram and table is arrested.
By reversing the direction of rotation of the
handwheel 9, that is, into an ‘anti-clockwise di
rection, as shown in Figure 4, the conduit 5, port
mental ports I lie and II c is located outside the
housing 7 'and is encircled by an annular ported
collar I2 which is formed internally with a dia
I 00, passage I31), ports I3a, I3 and He and pas
metrically opposed pair of segmental ports I3 and
I4 normally covered by the circumference of the
sage IId now become part of the exhaust or
return circuit, and the conduit 6, passage Mb,
body 8 between the ports lilo and Ho so that the 7 ports Ma, I4 and I00 and passage I M become
pressure ?uid passing into the passage Iii/d can
,
10’ part of the pressure supply circuit.
not pass beyond the ported body 8.
'
Instead of a reciprocating type of pressure ?uid
' Midway between the ends of the ports I60 and
power unit such as a ram, a rotary pressure ?uid
I I0, that is, alternating therewith, are two radial
.driven motor may be employed, geared to aro
ports Ita and Ma, see Figure 2, ‘which are in
tary driven apparatus as distinct from the recip
constant communication with the segmental ports 15 rocating table, for example for the remote con
I3 and I4 respectively in the collar I2, and these
trol of a gun turret, the rotary driven apparatus
radial ports I31: and I #a form the outer termini
driving the collar I2. When it is required to
of two passages I31) and Itb‘bored through the
control a rotary driven apparatus in two dimen
ported body 8 parallel with its axis. The pas
sions, for example a gun for direction and eleva
sages I31) and Iiib lead into radial passage exten- -
tion, one rotary pressure ?uid driven motor may
drive a planet gear wheel to traverse a toothed
cumferential channels 51) and 6b respectively
annulus under control of a handwheel distributor
communicating constantly with the beforesaid
as already described for varying the direction of
radial ports 5a and 6a receiving the conduits 5
the gun, and the gun trunnions may be oscillated
and B.
25 by another pressure ?uid driven motor, likewise
The ported collar I2 is free to rotate upon the
controlled by another distributor, the two dis
cylindrical ported body 8 and sealing rings 25
tributors being combined as a unitary assembly,
ensure a fluid-tight seal between the collar i2
the handwheel actuating one ported body 8 di
sions I30 and I40 which terminate into two cir
and the body 8. Also apacking ring or gland
rectly and the housing ‘I of such ported body
it can be interposed between the collar E2 and 30 being ?xed or geared to the ported body of the
other distributor, such housing ‘I being used as a
I? or other suitable axial pressure-applying
lever for actuating the latter ported body, rota
means being interposed between the outer an
tion of the handwheel adjusting the gun for di
nular face of the collar I2 and the handwheel 9.
rection and oscillation of the housing 'I which
The collar I2 has a circumferential gear ring 35 acts as a lever adjusting the gun for elevation.
I'Za in constant mesh with a rack bar I8 which
If. desired, registration marks, or a pointer and
moves in unison with the table 'I ; with the result
a mark, can be formed on the handwheel 9 and
that in order to commence and maintain move
collar I2 to assist the operator to rotate the hand
the ?xed housing 1, a coiled compression spring
ment of the table the ported body 8 must, by
wheel at the same speed as the collar l2. ,
its handwheel 9, be rotated to connect either port 40 The invention may also be used as a means for
I 00 or Me with the appropriate port I3 or I4
to bring the ram cylinder into circuit and for
such ported body to be rotated by hand at the
same speed as the collar I2 to maintain the sup
ply of pressure ?uid to the ram cylinder. It
will be appreciated that according to the direc
tion of rotation imparted to the ported body 8,
so will the operator determine which of the con
duits 5 and B is connected to the supply of'pres
sure ?uid and which acts as exhaust conduit with
a consequentdetermination of the direction of
movement of the table or its equivalent.
By referring to the normal and the alterna
tive positions of the ported body 8 shown in Figs.
2, 3 and 4, it will be seen that if the handwheel
9 is turned clockwise from the position of Fig. 2
to that shown in Fig. 3, the pressure ?uid will
?ow from conduit I 8 along passage I [id to seg
mental port I?c and thence to the conduit 5 via
ports I3 and I3a, and passage I3b. This will
result in the ram being driven to the right and
carrying with it the table I, which in turn drives
the collar I2 in the clockwise direction, such
movement being maintained so long as the oper
ator, by appropriate manipulation of handwheel
9, maintains the said communication between the
remotely controlling a steering gear, either as
an alternative, or as an addition to the known
worm and nut or other steering gears.
I claim:
a
1. In a machine of the character described, a
movable member, a ?uid motor for operating said
member including a cylinder and piston, a, man:
ually operated distributor adapted to be inter
posed between a, source of ?uid pressure supply .
and the said movable member, said, distributor‘
having a housing, a set of ports comprising an
inlet port connected to the source ofsupply and
an exhaust port, a second set of ports in said
housing connected to the cylinder of said, fluid
' motor to thereby provide for moving said piston,
said piston having a piston rod connected outside
the said cylinder to said movable member, power
imparting means carried by an end of said mov
able member, an inner and an outer ‘ported ele
ment forming cooperating ported elements one of
which is manually operated and the other ’ of
which is power driven by said power imparting
means in synchronism with-the movable member,
all of the ports in the said distributor housing
communicating with a corresponding number of
ports in the periphery of the inner ported ele
appropriate ports. The exhaust ?uid will be re
ment, said latter ports all contained in a common
turned to the conduit II by the conduit 6, pas
plane normal to the axis of the inner element
sage I 41), radial port Illa, segmental ports I4 and
and all being surrounded by the outer ported ele
I I0 and passage I Id and circumferential channel 70 ment, the latter ported element having a pair of
IIb.
diametrically opposed ports extending around the
If the handwheel 9 is held against rotation
circumference of the inner ported element so
the collar I2 will continue to be moved by the
that in the idle setting of the distributor the
table through the small angle required to break
in the outer element communicate with the
connection between the segmental ports IIlc, II c 75 ports
ports in the periphery of the inner element com
2,407,812
municating with only one of the said sets of
ports in the housing, but adapted to move into
communication with the other ports in the inner
element immediately when rotation is imparted
to one ported element relatively to the other,
whereby movement of said movable member is
6
3. In a machine of the character described, a
movable member, a hydraulic ram with. a piston
rod connected to an end of said member, said
ram including a cylinder and a piston, supply
and exhaust conduits connected tosaid cylinder,
a distributor having a housing, a set of ports
adapted to align with said conduits, a pair of cir
cumferential channels in constant communica
member to a selected predetermined port align
tion with said ports, a cylindrical body ro-tatably
ment with the said set of ports connected to the
mounted in said housing, manually operated
10
?uid motor for driving said piston and movable
means adapted to rotate the said body, a second
member to impart movement to said power driven
set of ports in said housing, supply and exhaust
ported element, until movement of said manually
conduits connected to said second set of ports
driven ported element is arrested and breaks said
and .to a source of fluid pressure, a pair of cir
port alignment and stops movement of said mov
cumferential channels communicating with said
able member by the ?nal movement of the piston. 15 second set of ports, said channels being in con
2. In a machine according to claim 1, wherein
stant communication with segmental ports, said
said manually operated ported element is a cy
segmental ports being connected to said circum
lindrical body rotatable in the said distributor
ierential channels by passages in said body ex
housing and said other ported element is an an
tending parallel with the aXis of said body, said
20
nular body connected to said power imparting
rotatable body extending beyond said housing to
means carried by the said movable member and
thereby expose said segmental ports, an annular
automatically driven thereby, said annular body
collar having de?ned in the bore thereof a dia
being ?tted about said manually operated cylin
metrically opposed pair of segmental ports nor
drical body close to an end of said housing, a
mally covered by the circumference of said body
pair of circumferential channels in said manually 25 between the said segmental ports therein, where
operated cylindrical body permanently communi
by ?uid passing into one of said axial channels
eating with said ?rst-mentioned set of ports in ‘
cannot pass from said body, a pair of radial ports
the housing connected to the source of ?uid pres
midway between said segmental ports of said
sure supply, a pair of passages in the said cylin
body adapted to be in constant communication
30
drical body separately connecting said channels
with said segmental ports in said collar, said
to a pair of ports in the periphery of said cylin
radial ports forming the outer termini of an
drical body, a further pair of ports in said cylin
other pair of passages bored in said body parallel
drical body alternating with the beforesaid pair
to the axis thereof, vsaid last-named axial pas
of ports and connected by passages in the body
sages each leading into radial passage extensions
‘to a second pair of circumferential ‘channels in
connected to said ?rst-mentioned circumferen
the body, said second pair of channels communi
tial channels connected to said ?rst set of ports,
cating permanently with said second set of ports
a ring gear on the circumference of said collar,
in said housing connected to the cylinder of said
and a rack bar carried by said movable member
fluid motor, conduits connected to each port of
in constant mesh therewith, whereby manual r0
said set leading to opposite ends of the cylinder
tation of said body to connect one of said seg
adapted to supply ?uid to drive said piston and
mental ports with its related segmental port in
the said movable member, and a pair of ports in
the collar closes the ?uid circuit to said ram, to
said annular driven member, each adapted to
thereby move said movable member until said
span a selected pair of ports in the manually op
rotation of the body is manually arrested and
45
erated element for effectively connecting the ?uid
said collar thereby has movement .to break said
motor to the source of ?uid pressure supply and
circuit and arrest movement of the movable
to break the connection by each being moved
member.
away from one of the said ports when said manu
SIDNEY RICHARD CAIN.
ally operated member’s movement is arrested.
maintained by moving said manually operated
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