close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2405047

код для вставки
33-236.
OE’
294059047
July 30, 1946.
2,405,047
w. H. NEWELL
SIGHT CONTROL MECHANISM
Filed May 4, 1943
4 Sheets-Sheet 1
INVENTOR
WILLIAM H.NEWELL
ATTORNEY
UH “W!
33. GEUMHHHJAL lNbHiUIViLN lb.
July 30, 1946.
w. H. NEWELL
2,405,047
SIGHT CONTROL MECHANISM
Filed May 4, 1945
. 4 Sheets-Sheet 2'
lNV_ENTOR
ILLIAM H. NEWELL
VATTORNEY
56. ULUMUMLM H‘OIRUPHLN m5
July 30, 1946.
S‘EQYCH H09"
w. H. NEWELL
2,405,047
SIGHT CONTROL MECHANISM
Filed May 4, 1943
4 Sheets-Sheet 3
INVENTOR
WILLIAM H‘NEWELL
ATTORNEY
sgégfgpMt 3 “WM um I Hum [.1‘5 h):
J‘11y'30, 1946-
w. H. NEWELL
2,405,047
S IGHT CONTROL MECHANISM
Filed May 4, 1943
glauzm
4 Sheet‘s-Sheet 4
I
I
'
I
\
l.
L
d
/
_‘
.
--I
43 gag-i“
\\\\\\\\\\\\‘
llllllllllllllIIIIIIIIIIIIIIIIHIIIIIII
INVENTOR
WILLIAM H.NEWELL
pm
ATTORNEY
search Rom
GEOMEIRlCAL lusmumw is.
Patented July 30, 1946
2,405,047
UNITED STATES PATENT OFFICE
2,405,047
SIGHT CONTROL MECHANISM
William H. Newell, New York, N. Y., assignor to
Ford Instrument Company, 1110., Long Island
City, N. Y., a corporation of New York
Application May 4, 1943, Serial No. 485,585
12 Claims.
(01. 33-49)
1
This invention relates to the ?eld of gunnery
and particularly to the control of the movement
of‘a sighting device such as a telescope while
tracking a target and of its angular position rela
troduced by the operator may be introduced di
rectly into the generated movement in order to
give an immediate indication of the fact and
direction of a correction, thus enabling the op
tive to a gun.
Ideally, automatic means move a sighting de
vice, herein termed a sight, at a pro-per rate to
the modi?ed output of the generating mechanism
compensate for the relative movement of a target
and thus ‘to maintain the target in the ?eld of
view of the sight, and at the same time supple
mental means determine and introduce the sight
deflection angle, that is, the lead angle of the
gun relative to the sight which is a function both
of the range and of the rate of movement of the
sight.
,
The invention is herein disclosed as applied to
the control of the position of the sight in azimuth
and of its training rate. In such application a
erator to check on an action in anticipation of
the appearance of which after the operator intro
duces a movement representative of acceleration
involves an appreciable period of time.
While theoretically the source of power which
drives the power elements of the variable speed
devices may drive the sight, in practice it is de
sirable to employ an additional servo motor for
this purpose. In such case the relay for control
15 ling the servo motor is differentially controlled
by the output of the position generating mecha
nism and by the position of the sight. In other
words the output of the differential represents
the error or disagreement between the generated
sight is mounted relative to a ?xed circular rack, 20 position and the response of the servo motor.
and the effective rate is to be regulated so as to
This relay may be of the so-called pneumatic
comport with the rate of relative movement of
type in which the control member of the servo
the target. The purpose of the invention is to
motor is spring biased to central or neutral posi
tion and is operatively connected to a pneumati
provide mechanism of a type that will enable the
operator accurately, smoothly and simply to in 25 cally controlled movable member, such as a dia
power device drives a training table on which the
troduce corrections as errors develop.
It is a characteristic of the invention that the
operator directly and temporarily effects an ac
celeration of the sight to correct for an accumu
phragm or a piston, that has normally balanced
air pressure on both sides but the balance of
which is under the control of a valve member that
is connected to be actuated by the output of the
lated error, and that this acceleration is con 30 differential. Also there may be provided a suit
able pneumatic impulse mechanism through
verted to a modi?cation of the eifective rate of
which the movement directly caused by the op
the power device. As preferably embodied the in
vention contemplates a variable speed device the
erator acts upon the control member of the servo
motor and anticipates the arrival of the effect
' output of which effects the movement of the sight
at a rate which is the ?nal result of accelerations to (ii of the movement through the generating mecha
introduced by the operator. Considering the
bearing of a sight, although it will be apparent
that the invention is equally applicable to the
nism.
In case the mechanism is to be used for train
ing control on board ship it is desirable to main
control of a sight in elevation, the rate at which
tain a constant indication of a ?xed meridian or
the bearing is automatically generated is suitably 40 other azimuth datum. It is contemplated that
for this purpose an azimuth gyroscope may be
represented by the output of a variable speed de
vice the rate member of which is under the direct
control of another variable speed device the rate
member of which is adjusted by the operator.
Thus the quantity introduced by the operator
produces a change of rate of the first variable
speed device an amount depending upon the value
and duration of the quantity, and the output of
the ?rst variable speed device is accelerated.
used so mounted as to effect a differential action
in control of the servo motor relay.
The invention also contemplates means for uti
lizing the rate of generated movement to deter
mine and introduce the sight deflection angle,
means to control the acceleration of the servo
motor, and other features which will more fully
appear from the following description of the illus
To effect a correction in the position of a sight 50 trated embodiments of the invention.
Referring now to the drawings, Fig. 1 is a dia
in addition to correcting the rate of movement,
gram representing one simple embodiment of the
the invention also contemplates introducing the
invention.
change of rate of the ?rst variable speed device
Fig. 2 is a similar diagram of a modi?ed em
directly into its output. Also it is contemplated ‘
that the movement representing the quantity in
bodiment of the invention.
2,405,047
3
4
Fig. 3 is a similar diagram of another modi?ed
embodiment of the invention.
Fig. 4 is a sectional detail of the part of the
pneumatic control system that is carried on the
base with the gyroscope in the construction of
Fig. 3.
desirable to remove the accumulated error coin
cident with the effecting of the change of rate
without requiring an overcorrection of the rate.
To bring this about the movement of the output
roller 1c is added to that of the output roller 80,
and the shaft I0 is thus set ahead or back de
Fig. 5 is an enlarged sectional detail of one of
pending upon the direction of movement of the
controller 5. As shown, the shaft II is geared
to a shaft I4 that is geared to one of the inputs
the chamber members of the impulse means.
Fig. 6 is a diagrammatic representation of the
problem to which the mechanism of Fig. 3 is 10 of a differential I5, the output roller 80 being
connected to the other input, while the output
suited.
of the differential drives shaft I 0. Thus the
Fig. 7 is a diagram representing a modi?ed
change of rate of change of position is introduced
form of connection between the impulse means
directly into the differential I5 to effect a change
and the motor control.
15 of position of the shaft Ill.
Fig. 8 is a section on line 8-8 of Fig. 7.
Since the complete effect of movement of the
Fig. 9 is a view similar to Fig. 8 with some of
acceleration roller 1c is not instantaneous upon
the parts displaced.
the movement of the rack 6 through the control
In the design of apparatus shown in the draw
ler 5, it is desirable for the purpose of checking
ings a sight I is mounted on elevation trunnions
bearing in uprights or legs 2 ?xed on a training 20 to have the rack 6 act directly upon the shaft I0
so as to give an immediate indication to the ob
table or mount 3 mounted for rotation inside a
server through the telescope that the controller
?xed, circular, peripheral rack 4. A hand con
has been moved and the direction of the ensuing
troller 5 which has a handle on one end and a
correction. To accomplish this it is suitable to
gear segment on the other, is pivoted on a cross
introduce the movement of the rack 6 directly
plate connecting the legs 2 on an axis perpen
into the position of the shaft II). This may be
dicular to the training mount. Its toothed end
done by a second differential I6 to one input of
meshes with a rack 6 which has on one end a ball
which the rack 6 is connected by shaft I'I, while
carriage of a variable speed drive ‘I.
the output of differential I5 is connected to the
Adjacent the variable speed drive ‘I is a second.
other input and the shaft I0 is connected to the
variable speed drive 8. These variable speed drives
output.
are of the two ball integrator type consisting of
In the form shown in Fig. 1 the shaft I0 is
a power driven disc ‘Ia and 80., respectively, a rate
connected directly to drive the mount 3. This
member ‘lb and 817, respectively, which is a ball
assumes suf?cient power in the motor 9 for the
carriage and two balls therein, and an output roll
er ‘I0 and 80, respectively. A constant speed mo 35 purpose. As shown a training pinion I8 meshes
with rack 4 and is carried on the end of a shaft
tor 9 is geared to drive the discs ‘Ia and 8a.
bearing in a bracket I9 and having on its upper
This drive mechanism is operative to drive an
end a gear 20 that is driven from the shaft I0.
output shaft II) that functions as a primary mov
Speci?cally a counter shaft 2| which is geared to
able member to produce or control the angular
shaft I0 is operatively geared to drive gear 20
movement of the mount 3 and hence to train the
through shaft 22 and drive pinion 23.
sight I. The output roller 7c is geared to shaft II
The position of shaft I0 and hence the hear
which has a pinion I2 engaging rack I3 that car
ing of the sight I is transmitted through a shaft
ries ball carriage 8b. Shaft I 0 is mechanically op
24 that is geared to shaft 2| to a transmitter 25
erated by the output roller 80.
of a synchronous electric transmission system
Taking a second as the unit of time and a radian
which in turn transmits it to a gun (not shown).
as the unit of angular motion of the shalt If),
Means are also provided to determine and add to
it is evident that the position of the rate mem
the transmitted value the sight de?ection angle,
ber of the variable speed drive 8 represents ra
that is, the angle between the sight and the gun.
dians per second, and that the position of the
This angle is the product of the rate of change
rate member of the variable speed drive 1 rep
of bearing and range or time of ?ight of a pro- ‘
resents rate of change of rate, that is, radians per
jectile which is a. function of range.
second per second. In other words the ?rst
As shown a multiplier 26 is provided, one in
represents velocity or rate of change of position
put member of which is set by the shaft II
and the second represents acceleration or rate of
change of velocity. Therefore when the operator 55 through pinion 21 and rack 28 so that it agrees
with the setting of the ball carriage 8b and
moves the controller 5 he changes the rate of
hence represents rate of change of bearing, and
acceleration and the resulting acceleration is in
the other input member of which is set by han
tegrated through the period of time that the op
dle 29 to introduce time of ?ight which simul
erator holds the handle oif~set so that the move
ment of the output roller 1c represents change 60 taneously is shown on dial 30 that may alter- ,
natively be graduated in corresponding values of
of rate of change of position; and the product of
range. The output of the multiplier 26 actu
the ‘rate represented by the position of the mem
ates shaft 3|. The movements of shafts 24 and
ber 8b multiplied by time represented by the
3I are combined in differential 32 the output of
rotation of disc 8a is change of angular position
65 which is connected to drive the rotor of trans
of shaft I0. Therefore it will be seen that a move
mitter 25.
ment of the controller 5 modi?es the rate of the
shaft Ill, and a much smoother and more exact
control of the movement of the shaft I0 is thus
More commonly a servo motor suitably c0n~
trolled by a, relay mechanism will be needed to
drive the mount 3, and such an arrangement is
obtained than is possible by applying the move
ment introduced by the operator directly to the 70 shown in Figs. 2 and 3.
Turning ?rst to Fig. 2, an electric motor 33 is
rate member 8b.
employed as the servo motor, the operating cir
As above stated the movement of the shaft I0
cuit of which is controlled by contact member
effects the training of the mount, and since it is
34 the position of which is differentially under
the accumulation of an error which apprises the
control of shaft Ill and the movement produced
operator that a change in rate is needed, it is
33. GEOMElRlCAL lNSiHUlVltN ii‘.
v.
.L.
2,405,047
by motor 33. It will be understood that the elec
a bias to the contact member 34 and close a con
tric motor is selected only for the purpose of illus
tact and hence start or accelerate the motor 33
tration and that electrically controlled clutches
earlier than the action of the generating mecha
or another type of motor, such as a hydraulic
nism becomes effective on the contact member.
This is to compensate for the time lag and may
motor may be employed, in which case the con
be termed a front lash mechanism by analogy
tact member would be of a form to control the
?ow of hydraulic ?uid or to operate a swash
to the back lash that normally occurs in any
mechanism. This impulse device consists of two
plate or other suitable form. Therefore the
closed cylinders having each a ?xed partition
term “contact member” as used herein is not
intended to be limiting but to include any mem 10 and a rotatable vane in it_dividing the cylin
ders into two chambers and the corresponding
ber in direct control of the speed and direction
sides of the two cylinders are connected. One
of the motor.
vane is connected to be moved by the hand con
As shown the member 34 is a pivoted electric
contact that cooperates with two ?xed contacts
troller and the other is connected to give a bias
35 which are reversely connected to the ?eld of
to the contact member.
the motor, the common lead of the motor being
As shown, a cylinder 41 has its vane geared to
connected to the contact 34 through a current
rack 6 and a cylinder 48 has its vane attached to
source. The motor armature is connected
the pivot arbor of member 34. The two sides are
through reducing gears to shaft 22’ which carries
connected by pipes 49. The construction will be
gear 23 that drives the training pinion l8 as in
better understood by reference to Fig. 5. It is
the construction previously described. Shaft
apparent that instead of two pipes 49, there may
22’ is geared to shaft 2|’ that is geared to shaft
be one pipe and the other side of each cylinder be
2'4’, which latter shaft corresponds to shaft 24
open to atmosphere which would then be con
in the construction of Fig. 1 and is differentially
sidered the second connecting means.
connected with the output of the sight de?ection
It will be clear that as the rack 6 is moved the
angle multiplier to drive the transmitter 25.
vane of cylinder 41 will turn and create either
We now turn to the means for determining the
an increase or decrease of pressure on one side,
position of the contact member 34. Centralizing
depending upon the direction of movement of
springs bias the member to central or open cir
the vane, and a reverse condition on the other
cuit position and pneumatic means under the 30 side if a second pipe is used. The vane of cylin
differential control of shafts l0 and 24' actuate
der 48 is biased accordingly and the contact
the member selectively to one or the other con
member 34 is thus caused to close its contact in
tact position. The shafts l0 and 24' therefore
anticipation of the time that it would be closed
may be considered as the primary movable mem
by the operation of valve 43.
ber and the driven member respectively of a 35
Means are provided to prevent a too rapid ac
follow-up system.
celeration of motor 33. A viscous drag device 50
As shown a piston 36 slidable in a cylinder 31
has one element fastened on the arbor of the con
is pivotally connected to the free end of the
tact member 34 and the other geared to one side
pivoted contact member 34 and is normally cen
of differential 5|. The other side of the differ
tralized therein by springs 38. Air under pres
ential is loaded with an inertia member .52, while
sure is admitted by pipe 39 to a chamber 40 adja
the center of the differential is geared to shaft
cent to cylinder 31 that communicates through
2|’. The connection is such that as motor 33
vents with the interior of the cylinder on oppo
is increasing its speed and the inertia member
site sides of the piston 36. The size of the vents
52 is lagging behind, the drag member 50 is ro
is controlled by adjustable needle valves so that 45 tated in a direction to open the contact and so
the flow can be regulated. A pipe 4| leads from
restrain the rate of acceleration. When the in
the interior of the cylinder on each side of the
ertia member catches up so that the speed of
piston to a valve block 42 in which is a piston
its side of the differential corresponds to that of
valve 43 arranged in control of the valve ports
the center, then movement of the viscous drag
of the two pipes 4|. When the piston valve 43
side of the differential stops and there is no tend
is in central position as shown, the two ports
ency of the contact to open so long as the speed
of pipes 4| are equally uncovered and the flow
of the motor does not change. When the motor
in the two pipes is equal and hence the pressure
speed slows down, the inertia member keeps on
on the two sides of piston 36 is equal. As the
going and produces a movement of the drag out
valve 43 moves up or down it more or less covers 55 put in a direction to'close the contact. In this
one of the ports and builds up a_pressure on
way the motor is prevented from slowing down
that side of the piston 36 and rocks the con
too fast.
tact member 34 accordingly.
The embodiment shown in Fig. 3 is the same
As above stated, this pneumatic means is un
as that of Fig. 2 except that a compass or equiv
der the differential control of shafts l0 and 24'.
alent gyroscopic means are provided to take care
A differential 44 has one input connected to shaft
of a change of ship’s course. In this case the
I0 and its other input to shaft 45 geared to shaft
gyroscope controls the pneumatic valve and in
24’, and its output is connected to a crank 46
conjunction with its base it constitutes the dif
pivoted to the connecting rod of piston 43.
ferential to compare the generated and response
Therefore a displacement of shaft I0 moves 65 movements.
piston 43 in one direction or the other and so
A gyroscope 53 is mounted in the usual gimbal
effects an unbalance of the air pressure on piston
mounting on a base 54, pivoted on the mount 3,
36 and closes the contact in one direction of
so as to have three degrees of freedom and main
motor 33. The motor turns accordingly and
tain its spin axis on a selected meridian. It
trains the mount and the sight, at the same time 70 therefore functions as an azimuth gyro.
Its
tuning shaft 24’ and shaft 45 and hence the
frame 55 is pivoted on the base 54, preferably
center of differential 44 until the valve 43 is re
though not necessarily coaxially therewith. The
stored to central position and the motor stops.
valve block 42 is mounted on the base 54 and
The mechanism also includes a pneumatic im
the connecting rod of the piston valve 43 is piv
pulse device operated by the controller 5 to give
otally attached to a crank extension on the frame
2,405,047
8
upper gyro pivot so as to allow relative angular
so as to keep the motor energized and thus pre
vent it from slowing down too rapidly.
Let it be assumed that the ship changes its
movement. This is shown in detail in Fig. 4.
The pipes 4! come in to a relatively stationary
cap, the interior of which communicates with pas
sages in the hub portion of the gyro support that
bearing angle B is unchanged. The relative
bearing angle Bs has to be changed to compen
sate for the change in the angle Co. This is done
connect with pipes 51 leading to the valve block.
automatically by the gyro. The turning of the
ship turns mount 3 and hence base 54 relative
55. The pipes 4| in this case lead to the valve
block 42 by way of a special connection in the
In this case the shaft [0 has a worm on its
course relative to the meridian OM but that the
end which meshes with a rack on the circular 10 to the gyro.
The valve 43 is thus displaced, the
balance of piston 36 is upset, member 34 is ac
tuated and motor 33 caused to operate to bring
the base to a position where valve 43 is again
The operation will be understood from a ref
in the center. This keeps the sight on the tar
erence to the diagram of Fig. 6. The ship on
which the apparatus is mounted is assumed to be 15 get and changes angle Bs so as to keep angle B
going in the direction OS. The gyro spin axis is
constant.
Now let it be assumed that angle B changes.
pointing in the direction OM. It is assumed that
the sight is pointed at a target in the direction
The operator does the same thing as he would
if the sight was lagging or getting ahead of the
OT. The ship’s course relative to the datum
meridian is Co and the relative bearing of the 20 target. He moves the controller 5 in the proper
line of sight is Be and the bearing relative to the
direction to step up the shaft I0 and thus move
the base 54 relative to the mount 3 with the re
datum meridian is B.
The apparatus under ideal condition operates
sult above described, the base being moved in
base 54, and turning of the shaft therefore ro
tates the base.
at a rate which just keeps the sight on a target.
the reverse direction to which the motor will
Thus ball carriage 1b is at the center of disc ‘la, 25 move the mount.
the roller ‘lo is stationary, and the ball carriage
Inasmuch as the movement of the controller
8b is off center just the right amount. But let
5 introduces acceleration by changing a rate that
it be assumed that the mount is training the
is integrated for a period of time in order to move
sight to the right and that the rate is too slow
the ?nal rate member 8b, the resulting movement
and the sight lags behind the target until an 30 of the sight is smooth.
error accumulates. Then it will be necessary to
It will be appreciated that while for clarity of
increase the training rate and immediately to
illustration the ?xed contacts 35 are shown sub
stantially spaced, in reality there is little clear
advance the sight an amount to remove the ac
cumulated error.
ance for the contact 34 and the movement of
The operator will move his handle to the left 35 the pivot arbor is not substantial. Therefore
when the vane of impulse device 48 is directly
connected to the arbor of the contact member
34, as is the case in the construction of Figs. 2
ing moved off center to the right, will cause a
and 3, the vane is limited to the restricted move
movement of the roller 10 at a rate proportional 40 ent of the arbor when controller 5 is moved.
to the displacement of the rate member and an
The movement of the vane of impulse device 41
amount depending upon the duration of the dis
is proportional to the movement of the controller
placement. This moves the rate member 8b to
5, and modi?es the relative values of the pres
the right and so steps up the rate of the roller
sures acting on the two sides of the vane of
80. A quantity proportional to the amount of
impulse device 48 to bias the contact member 34
movement of the roller 10 is added to the output
one way or the other. With this construction
of roller 80 at the differential I5. Also the dif
there is a direct relation between the effective
ferential I6 adds an instantaneous amount pro
pressure acting on the impulse device 48 and
portional to the movement of rack 6.
the vbias applied to the contact member 34, and
The effect of this relative angular movement
the rate of leakage is proportional to a function
of the shaft I0 is to turn the base 54 to the left
of the pressure.
or counter-clockwise relative to the mount 3.
In Fig. 7 is shown a construction in which a
This causes movement of the valve 43 to the left
variable relation between the bias applied to the
relative to the valve block 42 and actuates the
contact member and the leakage which causes
contact member 34 to engage the lower contact
the removal of the bias is obtained. For this
35. This causes the motor 33 to run in a direc
purpose a crank and spring connection between
tion to turn the pinion l8 so as to make the
the device 48 and the contact member 34 as
mount 3 move to the right or clockwise. The
shown may be used. With this construction a
mount carries the base 54 back relative to the
crank arm 58 is secured to the pivot arbor of
gyro until the valve 43 regains its central posi
the contact member 34 and a crank arm 59 is
tion. Thereupon the motor stops.
secured to the shaft of the vane of the impulse
Also the movement of the rack 6 through the
device 48. The impulse device 48 is mounted
pneumatic impulse devices 41 and 48 had closed
so that its shaft is out of line with the pivot ar
bor of contact member 34, as shown in Figs. 7,
the contacts 34, 35 earlierthan the base 54 was
moved to do it and in this way the corrective ac 65 8 and 9. The outer ends of the crank arms 58
tion of the motor was promptly started. The
and 59 are connected by a spring 68.
motor in accelerating turns the drag device 50 in
With this construction movement of the con
the direction indicated by the arrow in Fig. 3, and
troller ‘5 moves the vane of impulse device 41 as
this tends to open the contact 34 and hence
already explained, but instead of building up or
prevents too rapid an acceleration of the motor.
modifying the pressure acting on the vane of im
When the inertia element 52 gets up to speed
pulse device 48 to bias the contact member di
corresponding with the input of the motor into
rectly, the pressure now moves the vane of the
differential 5|, the drag member is stopped, but
impulse device 48 and the arm 59 attached there
as the motor slows down the inertia member
to, as illustrated in Fig. 9. The spring 80 as
so as to move the rack 6 to the right. The di
rection of the consequent movement of the parts
is indicated by arrows. The rate member 11), be
keeps on going and tends to close the contact 34
thus displaced imposes a force on the crank 58,
33. GEOMETRIUAL lNSl HUM
seems mom
;.;‘
2
"2,405,047
' 9
controller, two variable speed drives each in
thereby placing a bias on the contact member
34. It will be seen that when the center of the
cranks 58 and 59 are out of line as in Figs. 7,
8 and 9, the torque reaction from the spring 60
is less on arm 59 than on arm 58.
cluding a rate control member and an output
member, means operatively connecting the man
ual controller to the rate control member of one
variable speed drive, means operatively connect
The relation ‘
ing the output member of the said one variable
speed drive to the rate control member of the
other variable speed drive, a differential mecha
nism having two input elements and an output
of these torques may be varied by changing the
amount the centers are offset and it will be seen
that the torque on arm 59 approaches zero as
the displacement between the centers approaches
element, means operatively connecting the out
put member of the said other variable speed
the length of the effective radius of arm 58.
The operation with this construction is appar
ent. When the controller 5 is moved the vane
of impulse device 41 is rotated and the vane and
crank arm 59 of impulse device 48 are rotated a
drive to one of the input elements of the dif
ferential mechanism, means operatively connect
ing the output member of the said one variable
speed drive to the other input element of \the
substantially equal amount. The spring 60 ap
differential mechanism, means differentially
plies a bias to the contact member 34 through
connecting the manual controller and the output
the crank arm 58 and modi?es the energization
element of the differential mechanism in opera
of the motor 33. At the same time the action
tive
relation to the said training means, multi
of spring 60 on the vane of device 48 is to return
the arm 59 to be in angular agreement with the 20 plying mechanism having two input elements
and one output element, means operatively con
arm 58, as shown in Fig. 8, and thus eliminate
necting
the rate control member of the said
the bias.
other variable speed drive to one input element
With this construction a much smaller di?er
of the multiplying mechanism, means for setting
ence in pressure on the two sides of the vanes of
the other input element of the multiplying mech
25
the impulse devices is necessary to apply a given
anism according to a function of range, whereby
bias to the contact member. Because of the
the output of the multiplying mechanism repre
smaller difference in pressure, the rate of leak
sents the sight de?ection angle and means for
age to permit the return to normal condition can
combining the movement of the output element
be accurately controlled, the desideratum being
of the multiplying mechanism with the move
that the bias produced by the spring 60 shall hold 30 ment of the training means to position a member
the contacts 34, 35 closed until the new speed of
in accordance with the gun train order.
the motor is attained, whereupon the arm 59
3. In gunnery, sight controlling mechanism
should be in central position and the main con
comprising a rotatable mount, a sight on the
trol should have become effective to maintain
mount, training means for the mount, a manual
that speed.
controller, two variable speed drives each in
It will be apparent that the constructions de
scribed may be variously changed without de
parting from the principles involved. For exam
cluding a rate control member and an output
member, means operatively connecting the man
ual controller to the rate control member of one
ple, the form of a variable speed device is im
material so long as the displacement of the con
troller 5 determines the speed of output of the
?rst device which in turn controls the speed 0-1
output of the second device.
40
variable speed drive, means operatively connect
ing the output member of'the said one variable
speed drive to the rate control member of the
other variable speed drive, a servo motor con
nected to operate the training means, a controller
I claim:
45 for the servo motor, means di?erentially con
necting the training means, the manual con
1. In gunnery, sight controlling mechanism
troller and the output member of the said other
comprising a rotatable mount, a sight on the
variable speed drive to actuate the controller of
mount, training means for the mount, a manual
controller, two variable speed drives each in
cluding a rate control member and an output
member, means operatively connecting the man
ual controller to the rate control member of
one variable speed drive, means operatively con
necting the output member of the said one vari
able speed drive to the rate control member of
the other variable speed drive, means opera
tively connecting the output member of the said
other variable speed drive to the said training
means, multiplying mechanism having two input
the servo motor, and impulse transmitting means
connected to be actuated by the manual 'con-,
troller and operative upon the controller of the
servo motor to give an initial impulse to the
controller for the servo motor upon movement of
the manual controller.
4. In gunnery, sight controlling mechanism
comprising a rotatable mount, a sight on the
mount, training means for the mount, a manual
controller, two variable speed drives each includ
ing a rate control member and an output mem
60 ber, means operatively connecting the manual
tively connecting the rate control member of
controller to the rate control member of one
variable speed drive, means operatively connect
the said other variable speed drive to one input
ing the output member of the said one variable
element of the multiplying mechanism, means
for setting the other input element of the multi
speed drive to the rate control member of the
plying mechanism according to a function of 65 other variable speed drive, a reversible servo
range, whereby the output of the multiplying
motor connected to operate the training means,
mechanism represents the sight de?ection angle,
a source of power for the motor, a contact mem
elements and one output element, means opera
and means for combining the movement of the
ber in control of the power connection, a base
pivotally carried on the mount, a directional
with the movement of the training means to po 70 gyroscope having a frame pivotally mounted on
sition a member in accordance with the gun train
the base and having a freedom of movement to
order.
maintain its spin axis ?xed in space, means oper
2. In gunnery, sight controlling mechanism
atively connecting the output member of the said
comprising a rotatable mount, a sight on the
other variable speed drive to the said base, and
mount, training means for the mount, a manual 75 means actuated by the relative movement of the
output element of the multiplying mechanism
2,406,047
11
12
gyroscope frame and the base to operate the con
tact member.
5. In gunnery, sight controlling mechanism
members each having a rotative vane pivoted
therein and forming a partition, and conduits
comprising a rotatable mount, a sight on the
mount, training means for the mount, a manual
the two chamber members, one vane being oper
atively connected to the manual controller and
the other vane being operatively connected to
the contact member.
8. In gunnery, sight controlling mechanism
comprising a rotatable mount, a sight on the
mount, training means for the mount, a manual
controller, two variable speed drives each in
cluding a rate control member and an output
member, means operatively connecting the man
ual controller to the rate control member of one
variable speed drive means operatively connect
ing the output member of the said one variable
speed drive to the rate control member of the
other variable speed drive, a reversible servo mo
tor connected to operate the training means, a
source of power for the motor, a contact member
in control of the power connection, a base pivot
ally carried on the mount, a directionalgyroscopi
gavieunanerniraiallymé? ea,ie.e,,base
connecting the corresponding internal sides of
controller, two variable speed drives each in
cluding a rate control member and an output
member, means operatively connecting the man
ual controller to the rate control member of one
variable speed drive, means operatively connect
ing the output member of the said one variable
speed drive to the rate control member of the
other variable speed drive, a servo motor con
nected to operate the training means, a pneu
and having a freedom‘ofwmovementto maintain
matic control for the servo motor comprising a
its spin axis fixed in space, a differential mecha
movable contact member controlling the appli
nism having two inputelements and an output
cation of power to the motor, a pneumatically
element, means operatively connecting the output
movable member operatively attached to the
member of the said other variable speed drive
contact member and normally constrained in
to one of the input elements of the differential
mechanism, means operatively connecting the 25 central position, a source of pneumatic pressure,
branch passages of substantially equal capacity
output member of the said one variable speed
leading the pneumatic pressure to the opposite
drive to the other input element of the differen
sides of the pneumatically movable member, valve
tial mechanism, means differentially connecting
means for differentially venting the branch pas
the manual controller and the output element
sages, and means for differentially connecting
of the differential mechanism in operative rela
the manual controller and the output member
tion to the base, and means actuated by the rela
of said other variable speed drive to actuate the
tive movement of the gyroscope frame and the
valve means.
base to operate the contact member.
9. In gunnery, sight controlling mechanism
6. In a follow-up system including a primary
comprising a rotatable mount, a sight on the
movable member_ a, servo motor and a driven
mount, training means for the mount, a manual
member operated by the motor. a variable speed
controller, two variable speed drives each includ
device for driving the primary movable member,
ing a rate control member and an output mem
a manual controller for regulating the speed of
ber, means operatively connecting the manual
the variable speed device, a pneumatic control
for the servo motor comprising a movable con
controller to the rate control member of one
tact member controlling the application of power
variable speed drive, means operatively connect
to the motor, a pneumatically movable member
ing the output member of the said one variable
speed drive to the rate control member of the
operatively attached to the contact member and
other variable speed drive, a servo motor connect
normally constrained in central position, a source
of pneumatic pressure, branch passages of sub 45 ed to operate the training means, a pneumatic
stantially equal capacity leading the pneumatic
control for the servo motor comprising a mov
pressure to the opposite sides of the pneumati
cally movable member, valve means for differen
tially venting the branch passages, differential
means actuated by relative movement of the
primary movable member and the driven member to position the valve means, and impulse
able contact member controlling the application
of power to the motor, a pneumatically movable
member operatively attached to the contact mem
ber and normally constrained in central position,
a source of pneumatic pressure, branch passages
of substantially equal capacity leading the pneu
matic pressure to the opposite sides of the pneu
means between the manual controller and the
contact member operative to give an initial im
matically movable member, valve means for dif
pulse to the contact member upon movement of 55 ferentially venting the branch passages, means
for differentially connecting the manual con
the manual controller.
7. In a follow-up system including a primary
troller and the output member of the said other
variable speed drive to actuate the valve means,
movable member, a servo motor and a driven
member operated by the motor, a variable speed
two closed chamber members each having a ro
device for driving the primary movable mem 60 tative vane pivoted therein and forming a parti
ber, a manual controller for regulating the speed
tion, and conduits connecting the corresponding
of the variable speed device, a pneumatic control
internal sides of the two chamber members, one
for the servo motor comprising a movable con
vane being operatively connected to the manual
tact member controlling the application of power
controller and the other vane being operatively
to the motor, a pneumatically movable member
connected to the contact member.
operatively attached to the contact member and
10. In a follow-up system including a primary
normally constrained in central position, a source
movable member, a servo motor and a driven
of pneumatic pressure, branch passages of sub
member operated by the servo motor, a variable
stantially equal capacity leading the pneumatic
speed device having an output member for driv
pressure to the opposite sides of the pneumati 70 ing the primary movable member, a manual con
cally movable member, valve means for differen
troller for regulating the speed of the variable
tially venting the branch passages, differential
speed device, a controller for the servo motor,
means actuated by relative movement of the pri
means differentially connecting ‘the manual con
mary movable member and the driven member
troller and the output member of the variable
to position the valve means, two closed chamber
speed device to actuate the controller for the
so. tEOMETRICAL msmum
‘
Search Room
2,405,047
13
servo motor, and impulse transmitting means
connected to be actuated by the manual con
troller and operative upon the controller of the
servo motor to give an initial impulse to the
controller for the servo motor upon movement of
the manual controller.
11. In a follow-up system including a primary
movable member, a servo motor and a driven
member operated by the servo motor, a variable
speed device having an output member for driv
ing the primary movable member, a manual con
troller for regulating the speed of the variable
speed device, a controller for the servo motor,
means differentially connecting the manual con
troller and the output member of the variable
speed device to actuate the controller for the
14
movable member, a servo motor and a driven
member operated by the servo motor, a variable
speed device having an output member for driv
ing the primary movable member, a manual
controller for regulating the speed of the vari
able speed device, a controller for the servo mo
tor, means differentially connecting the manual
controller and the output member of the vari
able speed device to actuate the controller for
the servo motor, the controller for the servo
motor including a pivoted contact member, a
crank arm connected to the pivotal axis of the
said contact member, a second crank arm mount
ed for rotation about an axis parallel to the axis
of the contact member, yieldable means con
servo motor, and yieldable motion transmitting
means connected to be actuated by the manual
necting the crank arms, and yieldable transmit
ting means connected to be actuated by the man
ual controller and operative to position the sec
controller and operative upon the controller of
the servo motor to apply a bias thereto tending
to actuate said servo motor controller upon move
tioned crank arm tending to pivot said member
ment of the manual controller.
12. In a follow-up system including a. primary
ond crank arm to apply a bias to the ?rst men
to contact closing position.
WILLIAM H. NEWELL.
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 367 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа