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Патент USA US3045634

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July 24, 1962
3,045,624
T. A. DALY ETAL
SPEED CHANGE SYSTEM FOR TORPEDOES
Filed Dec. 23, 1953
(D
ID
to
2 Sheets-Sheet 1
a)
35
29
/58
INVENTORS
THOMAS A. DALY
SHERMAN
ATTORNEYS“
B. HALL
July 24, 1962
3,045,624
V T. A. DALY ETAL
SPEED CHANGE SYSTEM FOR TORPEDOES
Filed Dec. 23, 1953
2 Sheets-Sheet 2
INVENTORS
THOMAS A. DALY
SHERMAN B. HALL
\\\\\\\\\\\\\\\\l\\\\\\
United States Patent 0. ice
1
3,045,624
Patented July 24, 1962
2
biases the armature in a clockwise direction about its
3,045,624
knife edge pivot.
SP’EED CHANGE SYSTEM FOR TORPEDOES
A contact support 18 is a?ixed to the upper end of the
Thomas A. Daly, Swarthmore, and Sherman B. Hall,
armature and comprises an abutment 19 and a pair of
Sharon, Pa., assignors, by mesne assignments, to the 5 spaced
ears 20, 21 between which a pivot pin 22 ex
United States of America as represented by the Secre
tends. Oontact carriers 23, 24 are carried by the pivot
tary of the Navy
pin and biased for counterclockwise rotation about same
Filed Dec. 23, 1953, Ser. No. 400,148
by compression springs 25, 26 disposed between the abut
4 Claims. (Cl. 114-20)
ment and the carriers. Contacts 27, 28 are carried by
This invention relates to torpedoes and more particu 10 carriers 23, 24, respectively, and in the position shown,
larly to improvements in speed controls for same.
make electrical connections with mating contacts 29, 30
iIn torpedoes of the type propelled by an electric battery
the latter being rigidly secured to ‘a bracket 31, a?ixed
source of energy, the range thereof is a function of its
to frame 11. The armature is provided with a depending
portion 32 which loosely extends through a rectangular
speed, that is, if the speed is decreased the range is
increased and vice versa, US. Patent 2,604,556 discloses 15 slot 33 in bracket 15, the walls of the slot and spring
16 retaining the armature in operative position. A
a torpedo of the type just referred to in which a switch
is provided to manually selectively set the torpedo, prior
damper weight 34 is a?ixed to the lower end of the de
to launching, for low or high speed operation, this being
pending portion and serves to prevent premature closing
attained by placing two batteries in either series or paral
of the contacts due to vibration or shock.
lel in the propulsion motor circuit. In an acoustical 20
Contactor K21 is a substantial duplicate of the contactor
homing torpedo, such as the one to be subsequently
just described, like parts being designated by correspond
ing reference numerals with subscript. Only one set of
described, the low speed range, in ‘addition to enabling the
torpedo to be ?red at greater ranges, ‘also enables the
contacts 27a, 29a are required, however, but two sets
may be employed, if desired, the contacts of both sets
torpedo to make a greater number of reattacks and since,
the self noise level of the torpedo propulsion mechanism 25 being wired in parallel. The two contactors are dis
posed symmetrically to axis A of the torpedo.
is lower at low speed, this setting enhances the possibility
ofattack on relatively quiet targets.
The lower ends of weights 34, 34a are provided with
confronting projections 35, 35a which carry pivot pins
One of the objects of the invention is to provide im-,
36, 36a, respectively connected by an adjustable length
proved apparatus for effecting low or high speed torpedo
30 interlock link L to now be described. The bifurcated
operation during its entire run.
portion of a clevis 37 is pivotally connected to pin 36,
Another object is to provide a torpedo adapted to op
erate at low speed after launching, the speed automati
cally changing to high speed when a target is intercepted.
its shank portion 38 threadedly engaging a clevis 39, the
bifurcated portions of the latter being provided with
aligned elongated slots 40 in which pin 36a may slide.
Another ‘object is to provide a torpedo adapted to
operate in accordance with the foregoing object and 35 It will be apparent that when the armatures of the con
tactors are in the position shown in FIG. 2, interlock
change back to low speed if the target is lost.
link L positively prevents armature 13a from moving
Another object is to provide an electrical switching
system which interlocks sets of contactors and prevents
any possibility of a battery short circuit.
Another object is to provide the contactors with
dampers for preventing premature closing.
to a position to close its contacts. Similarly, when arma
ture 13a is in its closed position armature 13 is in its
open position vand prevented from moving toward closed
position. Any suitable insulators 1 electrically insulate
Further objects, advantages and salient features will
the various contacts so far described from their supports
and carriers.
In the operation of the device so far described, it will
appended claims and the accompanying drawing, in
45 now be assumed that the torpedo is set for low speed
which:
operation, with contactor K22 closed and contactor K21
-FIG. 1 is a side elevation of a torpedo embodying the
open, as shown in FIG. 2. Referring to FIG. 4, current
subject of the invention, portions being broken'away;
?ows from the positive terminal of battery section B21,
FIG. 2 is an enlarged section taken on line 2~—2,
become more apparent from the description to follow, the
portions being broken away;
through wire 50, motor M, wires 51, 52, contacts 27,
FIG. 3 is a section taken on line 3-3, FIG. 2, portions 50 29, and wires 53, 54 to the negative terminal of battery
B21. Current also ?ows from the positive terminal of
being broken away; and
battery section B22 through wires 55, 56, contacts 30,
FIG. ‘4 is the electrical circuit employed.
28, wire 57, wire 50, motor M, ‘and wire 51 to the nega
Referring in detail to the drawing, torpedo T is of any
tive terminal of battery section B22. The battery sec
conventional acoustical homing type, the propellers P
of which are rotated by a suitable direct current electric 55 tions are therefore in parallel with the motor.
Assuming, now, that K22 is open and K21 closed, cur
motor M, supplied by ‘a storage battery comprising two
rent ?ows from the positive terminal of battery section
sections B21, B22 of equal voltage and capacity. When
B21 through wire 50, motor M, wire 51 to the negative
the battery sections are electrically connected in series
terminal of battery B22, through battery B22, wires 55,
with the motor the torpedo operates at high or increased
speed and when connected in parallel it operates at low 60 58, contacts 27a, 29a and wire 54 to the negative ter
minal of battery section B21. The battery sections are
or reduced speed.
therefore in series with the motor.
The contacto-rs K21, K22 which effect the connections
The solenoid actuators of contactors K21, and K22
aforesaid are substantial duplicates and hence a descrip
tion of one will serve for both. Parallel contactor K22 65 are electrically connected by wires 60, 61, 62 to the nega
tive terminal of a battery 63. Wires 64, 65 selectively
comprises a support 10 rigidly a?ixed to any suitable
connect the actuators to the positive terminal of battery
?xed ‘structure 11 within the torpedo, this support having
63 by circuits to now be described. The movable con
a solenoid 12 af?xed thereto and carrying an armature
tacts of switches 66, 67 are connected, respectively, to
13 adapted to pivot about a knife edge 14 which rests
wires 64, 65 land are adapted to be conjointly moved to
on a bracket 15 rigidly secured to support 10. A com 70 any one-of three positions, Lo, Lo-Hi or Hi by an elec
pression spring 16 is disposed between the upper end of
trical actuator 68 disposed in the torpedo and controlled
the bracket and a foot 17 affixed to the armature and
remotely through wires 69 which terminate at a con
3,045,624
3
trol station outside of the torpedo. When the switches
are disposed in L0 or Hi position the torpedo will op
erate at either low or high speed throughout its entire
run.
With the switches in L0 position, ‘as shown, cur
rent ?ows from the positive terminal of battery 63 through
wires 69, 70, 71, switch 66, and wire 64, completing
4
torpedo, each having contacts forming a part of said cir
cuit, each contactor having a solenoid for closing its
contacts when energized, and a circuit Within the torpedo
having 'a three position switch therein for each solenoid;
the ?rst position for effecting parallel connection of the
battery sections; the second position for effecting series
connection of the battery sections, an electric circuit
adapted to be energized at a remote station outside of
the torpedo for conjointly moving the switches to either
described.
Assuming, now, that these switches are moved to Hi 10 of said positions; and a third position in which the bat
tery sections may be connected in either series or parallel
position, current ?ows from the positive terminal of
under control of a torpedo guidance system carried by
battery 63 through wires 69‘, '72, 73, switch 67, and
the torpedo.
wire 65, completing the circuit to contactor K21 and
2. In a torpedo of the type having an electric pro
hence closing its contacts for effecting the series bat
tery circuit previously described.
15 pulsion motor and an electric storage battery comprising
two sections of equal voltage, an electric circuit for se
In the third position of Lo-Hi which may also be
lectively connecting the sections in parallel or series with
preselected before launching, the torpedo changes speed
the motor, whereby it may operate at'low or high speed,
automatically after being launched. The circuitry to
respectively, the improvements in combination compris
effect the foregoing comprises ‘contacts K104 of an acous
tic enabling relay which close when acoustic guidance 20 ing; a normally open parallel circuit contactor and a
normally open series circuit contactor carried within
system 74 is energized. After the guidance system is
the torpedo, each having contacts forming a part of said
energized ‘and after it has detected a target for a pre
circuit, each contactor having a solenoid for closing its
determined time, normally closed contacts K10‘5a of a
contacts when energized, and a mechanical interlock for
relay controlled by the guidance system open, opening
contactor K22, closing normally open contacts K105b 25 preventing closing of the contacts of both contactors in
event both solenoids are energized at the same time.
to close contactor K21, whereupon the torpedo shifts
3. Apparatus in accordance with claim 2 wherein each
from low to high speed. If the target is subsequently
solenoid operates a swingable armature, movement of
lost 'for more than a predetermined time, contacts K105b
Which a certain position closes the contactor contacts,
open and contacts K105a close, thus changing the speed
the ‘armatures each having a depending swingable mem
back to low speed until the guidance system again picks
ber ta?ixed thereto, said members being connected by a
up the target as previously described.
linkage system constructed and arranged to prevent the
Obviously many modi?cations and variations of the
closing of both contactors, at the same time.
present invention are possible in the light of the above
4. Apparatus in accordance with claim 3 wherein each
teachings. It is therefore to be understood that within
the scope of the appended claims the invention may be 35 of said members is provided with a weight for damping
movement of its associated armature.
practiced otherwise than as speci?cally described.
We claim:
References Cited in the ?le of this patent
1. In a torpedo of the type having an electric propul
UNITED STATES PATENTS
sion motor and an electric storage battery comprising two
sections of equal voltage, an electric circuit for selectively 40 1,312,510l
Baker _______________ .._ Aug. 12, 1919
connecting the sections in parallel or series with the
1,324,194
Harries _______________ __ Dec. 9, 1919
2,411,828
Hammond ___________ __ Nov. 26, 1946
motor, whereby it may operate at low or high speed,
the circuit to contactor K22 and hence closing its con
tacts for e?ecting the parallel battery circuit previously
respectively, the improvements in combination compris
ing; a normally open parallel circuit contactor and a
normally open series circuit contactor carried within the
2,425,190l
2,604,556
2,755,354
Johnson et al. _________ ._._ Aug. 5, 1947
Daly _________________ __ July 22, 1952
Dehn et -al ____________ __ July 17, 1956
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