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Патент USA US3054306

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Sept 18, 1962
B. c. WELLS ETAL
3,054,297
AUTOMATIC STOP LIMIT FOR GUN CONTROL
Filed March 3, 1958
3 Sheets-Sheet 1
FIG.|
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TRAIN DRIVE
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INVE TOR8
L
CHARLES J. MAHLER
ATTORNEYS
Sept- 18, 1962
B. c. WELLS ETAL
3,054,297
AUTOMATIC STOP LIMIT FOR GUN CONTROL
Filed March 3, 1958
3 Sheets-Sheet 2
TRIGAHTN
FIG.6
I
I
INVENTORS
BRUCE C. WELLS
CHARLES J; MAHLER
FIG.2
BY
ATTORNEYS
Sept. 18, 1962
B. c. WELLS ETAL
3,054,297
AUTOMATIC STOP LIMIT FOR sun CONTROL
Filed March 3, 1958
W...
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INVENTORS
BRUCE C. WELLS
CHARLES d. MAHLER
BY mw
Mm‘, .
ATTORNEYS
United States Patent 0
C6
3,054,297
. Patented Sept. 18, 1962
1
2
3,054,297
the actual training angles of the guns may be accurately
indicated at all times.
Still another object of the invention is the provision of
an improved limit stop device wherein means, settable
at will to di?erent settings, automatically control the
AUTOMATIC STOP LTMIT FUR GUN CONTROL
Bruce C. ‘Wells and ‘Charles J. Mahler, Buffalo, N.Y., as
siguors, by mesne assignments, to the United States of
America as represented by the Secretary of the Navy
Filed Mar. 3, 1958, Ser. No. 718,93tl
5 Claims. (Cl. 74-35)
The present invention relates to a stop device and
more particularly to ‘a new and improved limit stop mech
anism suitable for use with trainable gun mounts.
Moreover, the invention contemplates the provision of
a new and improved limit stop mechanism for use with
conventional power-operated guns wherein means are
provided for determining the position of the guns at all
times, and in ‘which means, settable at will to di?erent
settings, give a visual indication of the position at which
the stop devices of the mechanism are set to function
during training of the guns, around an azimuth circle
either in one direction or the other, as the case may be,
and in which means controlled by the operation of the
stop devices function to provide a signal which causes
the conventional driving motor to slow down before the
drive motor of a power-operated gun mount.
It is a further object of the invention to provide an
improved limit stop mechanism wherein a signal developed
in response to movement of adjustable means settable at
will to different settings causes the train drive motor
and/or the elevational drive motor to slow down as the
guns approach a position corresponding to the setting of
the adjustable means.
Other objects and many of the attendant advantages of
this invention will be readily appreciated as the same be
comes better understood by reference to the following
detailed description when considered in connection with
the accompanying drawings wherein:
FIG. 1 is a schematic view illustrating the limit stop
mechanism of the present invention in connection with a
conventional train drive motor and gun mounts;
FIG. 2 is an enlarged front elevational view of the
limit stop mechanism;
guns reach the limits of their range of operation the driving
3 is an enlarged sectional view taken substantially
motor being controlled remotely in any conventional man 25 onFIG.
the line 3-3 of FIG. 2;
ner. Furthermore, the invention provides adjustable stop
means which may overrun the initial stop setting due to
failure of the slow-down mechanism of the aforesaid sys
tem without damage thereto or necessitating resetting of
the stop means.
This arrangement overcomes disad
vantages encountered in prior art devices, for the reason
that such devices require certain readjustments should
FIG. 4 is a sectional view taken on the line 4—4 of
FIG. 3;
FIG. 5 is a sectional view taken on the line 5—-5 of
FIG. 3;
FIG. 6 is an enlarged detail sectional view taken on
‘line 6-6 of FIG. 2; and
FIG. 7 is a View in diagrammatical form, illustrating
the actuating mechanism for operating the signal pro
overrunning occur. Moreover, the invention provides an
improved limit stop mechanism which is simple in struc
ducing elements during gun training cycles.
ture, economical to manufacture and which possesses 35
Referring now to the drawings and more particularly
highly satisfactory qualities of ruggedness and durability
to FIG. 1, the numeral 11 generally indicates the limit
in service.
stop mechanism constructed in accordance with the pres
Brie?y, the limit stop mechanism consists essentially
ent
invention and which is particularly adapted for use
of a main gear having a dial ?xed thereto provided with
a suitable degree scale and an indexing element co 40 with power operated gun mounts which include conven
tional components such, for example, as a training circle
operating therewith, the main gear being driven by a
worm operatively connected to ‘a conventional drive motor
or gear 12 which supports a pair of guns G. The train~
indicating the stop setting for training in one direction,
ing circle is adapted to be driven by a train drive motor
13 controlled by a conventional control unit (not shown),
indicating the stop setting for training in the reverse direc
tion, this training movement being hereinafter referred
18 in engagement with training circle 12.
for the guns. A degree scale is provided on the dial for
and a similar degree scale is provided on the dial for 45 and a through motor shaft 14, Worm 15 mounted on
one end of shaft 14 in driving engagement with a worm
wheel 16 secured to shaft 17 which carries a train pinion
to as a right train and a left train.
The device further
It will be understood that upon operation of the motor
includes stop setting discs, settable at will to different
50 the guns are trained in either of two directions such, for
settings about the degree scale on the dial, wherein the
example, as to the right or to the let . Since the afore
position of the discs with respect to the position the dial
said gun mount construction and arrangement is well
may be varied, if desired, from 50° to 360°, for example,
known in the art to which the present invention pertains
by unlocking normally locked pinions, cooperating with
further detailed description of the mount is deemed un
dial means and rotating the pinions with respect to the 55 necessary.
aforesaid main drive gear assembly ‘whereupon the dial
The limit stop mechanism of the present invention is
means are moved to a selected setting. Thus the stop
devices function as the guns approach the desired gun
provided With a driving gear or Worm wheel 24 adapted
to be connected to the motor shaft 14 by a ?exible shaft
training position or angle. Neans including a potentiom
v25 having a worm 26 on one end thereof in engagement
eter are provided and cooperate with each stop setting 60 with worm wheel 24 and a gear 27 on the other end
thereof in engagement with a gear 28 mounted on the
device and are actuate-d thereby to initiate a signal. The
motor shaft 14 and thus by this arrangement a driving
signal is adapted to be employed to cause the drive motor
connection is provided between motor 13 and the worm
to slow down as the discs reach a point corresponding to
the preselected setting thereof.
Accordingly, an object of the present invention is to
provide a new and improved limit stop device for use
with power driven gun mount.
wheel 24- of the limit stop mechanism 11, whereupon
the worm wheel 24 and training gear are rotated in unison.
It will be noted, FIG. 3, that the gear 24 is secured
to one end of rotatable sleeve 29 as at 31, the other
end of the sleeve having a dial 32 secured thereto as
Another object of the invention resides in the provision
of an improved limit stop mechanism for power-operated 70 at 33, it being understood by this arrangement that the
gear 24, sleeve 29‘ and the dial 32 are secured together
gun mounts wherein the guns are decelerated before reach
in such a manner as to rotate as a unit in response to
ing the limits of their range of operation and wherein
rotation of the Worm wheel 24 by the Worm 26. The
3
sleeve 29 is rotatably supported in a bearing 34-?- carried
by a support 35 which may constitute the front panel of
a casing for enclosing the mechanism 11, as best shown
on FIG. 3. The dial 32 is provided with a pair of
identical degree scales $6 and 37, the aforesaid scales
cooperating with an index element 36 mounted on the
support 35, the aforesaid scale and index arrangement
being adapted to accurately indicate the position of the
guns G supported on the training gear 12.
A sleeve 39‘ is disposed Within sleeve 29 and is ro
tatably supported on a shaft 41, the sleeve 39 extending
through sleeve 29 and having a gear 42 secured to one
end and an arm 43 secured to the other end thereof. The
arm 43 is carried by a split clamp 44» disposed about
the sleeve 39 and clamped thereto by a nut and bolt 45.
The shaft 41 extends through sleeve 39 and has secured
to one end a gear 46 and an arm 47 secured to the other
end thereof, the arm ‘47 being carried by a split clamp
48 disposed about the shaft 41 and clamped thereto by
4
have been rotated an amount corresponding to a pre
selected setting thereof, the signal being developed as
arms 4-3 and 47 are rotated by their respective driving
means to actuate the detents 61 each of which, in turn,
rotates a shaft 65 through its respective gear 64 and pinion
‘66. It will be understood, however, that dial 32 is ro
tated an amount corresponding to the rotation of the
guns by sleeve 22‘ as worm Wheel 24; is driven by worm
26. Furthermore, one of the potentiometers will be op
erated to provide a signal in accordance with a preselected
setting of disc 42 as the guns are trained in one direc
tion (right train) and approach a position corresponding
to the preselected setting of disc 42 and the other po
tentiometer will provide a signal in accordance with a
preselected setting of disc 46 as the guns are trained
in the reverse direction (left train) and approach a po
sition corresponding to the preselected setting of disc 4-6.
For example, as arm 47 is rotated in the direction
as indicated by the arrow A, FIG. 5, the left train de
tent 61 is moved as roller 59 mounted on arm 47 en
a nut and bolt 49, as more clearly shown on FIGS. 5 20 gages the detent. Upon movement of the detent in the
and 6.
As shown on FIG. 2, gear 46 is provided with an in
dicator or pointer 51 secured thereto as at 52, the gear
aforesaid manner rotative movement is imparted to the
wiping contact of potentiometer 67 disposed at the right
of arm 47, by way of shaft 62, gears 64 and 66 and wip
‘46 being in engagement with a driving pinion 53 mounted
ing shaft 65‘ and thus the potentiometer is operated and
525
on a stud shaft or locking bolt 54 carried by and in
produces a signal when the guns are trained to the left
threaded engagement with the degree indication dial 32
and reach a position corresponding to the preselected
and adapted to rotate the gear or disc 46 in response
setting of discs 46. It will be understood that although
to rotation of the aforesaid dial 32. It will be noted
that gear 42 is provided with an indicator or pointer
55 secured thereto as at 56, the gear 42 carrying the
pointer ‘55 being in engagement with a driving pinion
57, similar to driving pinion 63 and mounted on a stud
shaft or locking bolt 58 carried by and in threaded en
gagement with the aforesaid dial 32 and adapted to ro
tate the gear 4-2 in response to rotation of the dial By
the aforesaid locking bolt arrangement it will be under
stood that when pinions 53‘ and 57 are llocked to disc 32
arm 43 rotates in the same direction as arm 47 during
the left train cycle of operation, the potentiometer 67
associated therewith and disposed at the left of arm 43
will not be operated, for the reason that during this cycle
of operation roller 59‘ on arm 43‘ overrides the right
train detent without effecting operation of the speci?c
potentiometer associated therewith. When arm 43 is ro~
tated in the direction as indicated by arrow B, FIG. 5,
the right train detent 61 is moved as the roller mounted
on arm 43 engages the aforesaid detent.
In response to
by their respective locking bolts discs or gears 42 and
this movement, rotative movement is imparted to wiping
46 are driven by their respective pinions 53‘ and 57 in 40 contact of potentiometer 67 disposed at the left of arm
response to rotation of dial 32 through sleeve 29, worm
43, by way of shaft 62, gears 66 and 66, and wiping shaft
wheel 24- and worm 26. It will be further understood,
65 and thus the potentiometer is operated and produces a
however, that the aforesaid disc elements 42 and 46 are
signal when the guns are trained to the right and reach
settable at will to different settings about the dial 32
a position corresponding to the preselected setting of disc
whereupon pointers 51 and 55 on the respective disc
6.2. During this cycle of operation roller 59 on arm 47
elements are moved to the desired degree markings on
overrides the left train detent 61 without effecting opera
the dial 32 thereby to cause the stop limit mechanism
tion of the specific potentiometer associated therewith.
to function when the guns have been moved either in
Each of the gears 64 is provided with a return de~
a right or left train, as the case may be, an amount
corresponding to a preselected setting of the discs 42 and
46.
The desired settings of the discs 42 and 46 may 50
be accomplished by loosening the locking bolts a detail
of which is illustrated on FIG. ‘6 and which normally
locks the pinions 53-—57 to the dial 32, an amount suffi
ciently to unlock the pinions from the dial 32 and allow
free rotation of the pinions. Thus upon rotation of the
pinions the discs 42 and 46 may be rotated with respect
to the dial 32 to position the degree indicators 51 and
vice generally indicated by the reference character 68
for returning the potentiometers to an initial position after
the potentiometer shafts have been rotated in the afore
said manner by the pin and detent arrangement. As
shown on FIG. 4, each return device comprises a pair of
mutually spaced pins or rollers 69 mounted on each of
the gears 64- and normally in engagement with an elon
gated head 71 carried by a piston or member '72 mova
bly arranged within a support or bracket 73. A spring
'74 is disposed about each member '72 and having one
55 on the discs 42 and 46 in registration with the de
end in engagement with head 71 and the other end thereof
sired degree markings on dial 32.
in engagement with bracket 73. By the aforesaid ar
60
It will be noted FIGS. 3 and 5 that the arms 43 and
rangement the potentiometers and component parts there
47 each carry a pin or roller '59 on the free end thereof,
of such, for example, as the conventional slider carried
each roller 59 being adapted to cooperate with a de
by each of the shafts 65 are maintained in an initial
tent or lever 61 mounted on one end of a pair of shafts
62 respectively. Each shaft 62 is supported by bracket
position. Upon actuation of the slider shaft 65 through
pinion 66, gear 64‘, detent 61 and arm 43, as heretofore
63 carried by or forming a part of the casing which 65 more fully set forth, the return mechanism 68, under the
encloses the mechanism Ill and having secured thereto
the in?uence of spring '74, now compressed by rollers 69
and rotatable therewith a gear 64, the aforesaid shaft
in response to rotation of gear 64, will move the slider
being journaled in supports or brackets 63. A shaft
shaft 65 back to its initial position.
65 is rotatably supported by each of the brackets 63 and
Referring again to FIG. 1 it will be understood that
having a pinion 66 mounted on one end, the other end 70 the aforesaid motor and gear arrangement is adapted to
thereof connected to a potentiometer 67 thereby to op
cause rotation of the guns and worm wheel 24 in either
erate the potentiometers in response to the rotation of
right or left train in accordance with the direction of
the potentiometer shafts 65. The potentiometers, when
operated, are particularly adapted to provide a slowdown
signal for the train drive motor when discs 42 and 46
rotation of train drive motor 13. It will be understood
that the limit stop device if of the present invention is
5
3,054,297
constructed and arranged to develop signals when disc
42 is moved a predetermined amount in one direction and
disc 46 is moved a predetermined amount in the reverse
direction, such movement of the discs corresponding to
the amount of movement or training of the guns by rea
son of the aforesaid driving connection therebetween.
Brie?y stated in summary the automatic stop limit
?rst coupling device to the dial at a preselected setting and
for releasing the ?rst coupling device to allow adjust
ment of said one disc member to said preselected setting
with respect to the dial as the ?rst means is released,
a second coupling device normally locked to said dial in
engagement with the other disc member of said pair of
disc members for rotating the other disc member in either
of the present invention is particularly adapted for use
direction in accordance with the direction of rotation of
With power operated gun mounts and although the in
the dial, second means carried by the dial for locking the
vention has been described in connection with a gun train 10 second coupling device to the dial at a preselected set
ing mechanism it will be understood, however, that, if
desired, the invention may be used in connection with
a gun elevation or depression mechanism.
ting and for releasing the second coupling device to
allow adjustment of the other disc member to said pre
selected setting with respect to the dial as the second
means is released, a ?rst potentiometer for altering a
What is claimed is:
I. A signal altering mechanism suitable for use with 15 signal received thereby as the potentiometer is operated,
a power operated gun trainable in either of two direc
tions and comprising a rotatable dial element having a
a ?rst gear train operatively connected to the ?rst po
preselected setting with respect to said dial element as
wherein means including a ?rst spring biased member
returns the ?rst potentiometer and ?rst gear train to an
tentiometer for operating the potentiometer, a ?rst detent
degree scale disposed about the outer edge thereof, power
carried by said ?rst gear train for operating the gear
operated gun means for rotating said dial element accord
train, a ?rst actuating arm carried by said one disc mem—
ing to the rotations of said gun, a pair of rotatably mount 20 her and actuated thereby for actuating the ?rst detent
ed disc members settable to a different setting with respect
upon rotation of the one disc member, a second poten
to said scale on the dial element, a ?rst coupling means
tiometer for altering a signal received thereby as the po
normally locked to the dial element in engagement with
tentiometer is operated, a second gear train operatively
one disc member of said pair of disc members for rotating
connected to the second potentiometer for operating the
said one disc member in either direction in accordance 25 second potentiometer, a second detent carried by the
with the direction of rotation of the dial element, a
second gear train for operating the second gear train,
?rst locking means carried by said dial element for lock
a second actuating arm carried by the other disc mem~
ing the ?rst coupling means to said dial element at a
ber and actuated thereby for actuating the second de
preselected setting and for releasing the ?rst coupling
tent upon rotation of the other disc member.
means to allow adjustment of the dial member to said 30
3. A signal altering mechanism according to claim 2
the locking means is released, a second coupling means
normally locked to the dial element in engagement with
initial position after the one disc has been rotated and
the other disc member of said pair of disc members for
the ?rst potentiometer has been operated.
rotating the other disc member in either direction in ac 35
4. A signal altering mechanism according to claim 2
cordance with the direction of rotation of the dial ele
wherein means including a second spring biased member
ment, a second locking means carried by the dial element
returns the second potentiometer and second gear train
for locking the second coupling means to the dial ele
to an initial position after the other disc member has
ment at a preselected setting and for releasing the second
been rotated and the second potentiometer has been
coupling means to allow adjustment of the other disc 40 operated.
member to said preselected setting with respect to the
5. A signal altering mechanism suitable for use with
dial element as the second locking means is released, a
a power operated trainable gun operable in either of
?rst potentiometer for altering a signal received thereby
two directions and comprising a rotatable dial having a
as the potentiometer is operated, means including a ?rst
degree scale disposed about the outer edge thereof, driv
gear train operatively connected to said ?rst potentiometer 45 ing means for imparting rotary movement to said dial in
for operating the ?rst potentiometer as the ?rst gear
either of two directions and corresponding to the direc
train is operated, means carried by the one disc member
tion of rotation of a gun, rotatably mounted disc means
for operating the ?rst gear train when the one disc mem
settable to different settings with respect to said degree
ber has been rotated an amount corresponding to said
scale on the dial, coupling means normally locked to
preselected setting, a second potentiometer for altering a 50 said dial for rotating said disc means in either direction
signal received thereby as the potentiometer is operated,
means including a second gear train operatively connect
according to ‘the direction of rotation of the dial, 1ock~
ing means carried by said dial for locking said coupling
ed to said second potentiometer for operating the second
potentiometer as the second gear train is operated, and
means to the dial at a preselected setting and for re~
2. A signal altering mechanism suitable for use with
altering means, and means carried by and movable With
leasing the coupling means to allow the disc means to
means carried by the other disc member for operating 55 be moved to a preselected setting, means for altering an
the second gear train when the other disc member has
electrical signal when the disc means are rotated an
been rotated an amount corresponding to said preselected
amount corresponding to said preselected setting, actuat
setting.
ing means including a gear train for operating the signal
a power operated trainable gun operable in either of 60 said disc means for operating said actuating means and
two directions and comprising a rotatable dial having a
gear train when the disc means has been rotated an
degree scale thereon, power operated gun means for
amount corresponding to said preselected setting.
rotating said dial according to the rotation of the gun,
a pair of rotatably mounted disc members settable to dif
ferent settings with respect to said scale on the dial, a 65
?rst coupling device normally locked to said dial in en
gagement with one disc member of said pair of disc
members for rotating said one disc member in either
direction in accordance with the direction of rotation of
the dial, ?rst means carried by said dial for locking the 70
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,029,362
2,365,982
2,426,597
2,586,982
2,662,146
Hall _______________ -_ June 11,
Tro?mov ____________ __ Dec. 24,
Chafee _____________ __ Sept. 2,
iNaugler et al. ________ __ Feb. 26,
Wilentchik ___________ __ Dec. 8,
1912
1944
1947
1952
1953
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