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Патент USA US2403887

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Ju?y 9, W46,
R. L. TW‘EEDALE
2,403,887
AMMUNITION HOI\ST
Original Filed Oct. 5, 1956
\ 7 Sheets-Sheet l
INVENTOR
July 9, 1946.
R. L. TWEEDALE
2,403,887
AMMUNITION HOIST
Original Filed Oct. 5, 1936
7 Sheets-Sheet 2
INVENTOR
My 9, 1946.
R. L. TWEEDALE)
294mm?
AMMUNITION HOIS'I‘
Original Filed Oct. 5, 1936
7 Sheets-Sheet 3
ggiakamm
INVENTOR
éZM 4 TM‘
My % 19%.
R L. TWEEDALE
2,403,887
AMMUNITION HQIDST
}
Original Filed Oct. 3, 1956
7 Sheets-Sheet 4
INVENTOR
MKM
July 9, 1946.
_
R |__ TWEEDALE
2,403,887
AMMUNITION HOIS'I’
I
Original Filed Oct. 3, 1936
'7 Sheets-Sheet 5
‘Edy 9’ 1946-
R. L. TWEEDALE
-
jwqjagéggi? ;, v :
AMMUNITION ' HOIST
‘
Original Filed Oct. 5, 195's
7 Shams-Sheet 6
66
57'
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38
i
FI
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INVENTOR
MZW
July
29%.
R. L. TWEEDALE
'
2,403,871
AMMUNITION HOIST
Clriginal Filed Oct. 3, 1936
'7 Sheets-She‘ét 7 '
B32
256
INVENTOR
WLW
'
Patented July 9, 1946
'
i
. 2,403,887
0mm:
UNITED STATES PATENT *
2,4035887
_
AMMUNITION HOIST
Ralph L. Tweedale, Waterbury, connq’assignor to '
The Waterbury Tool Company, Waterbury,
Conn, a corporation of‘Connecticut
Application October 3, 1936, Serial No. 103,899
Renewed October 28, ‘1939
17 Claims.
a
.
(Cl. 89-46)
1
This invention relates to power transmissions
-
'
A
2
must be provided with its own independent drive‘
and more particularly to a conveyor for deliver
mechanism. Furthermore additional crew is re
ing articles from one station to another wherein
quired for handling ammunition at the transfer
a ?re hazard is present at one station and in
station, which not only increases the number of 7
which it is desired to prevent the possibility of 5. men required for each gun to be ?red but pre
?ame transmission between the two stations at
sents also a retarding element in the delivery
all times, while permitting the continued passage
of ammunition since it introduces one more place
of articles between the stations. The invention
.for unavoidable human errors and delays to in
is particularly adapted to delivering ammunition
aboard ship from an ammunition storage com
partment to a position at the guns for use there
terfe'rewith the intended operation of the hoist.
10
in, although it will be understood that the in
rapid delivery of ammunition between a loading '
vention may be adapted to other uses wherein
similar conditions and problems are encoun
tered.
It is an object of the present invention to pro
vide a conveyor system particularly adapted to
station adjacent .the magazine’ and an unloading
station adjacent the gun by which ammunition
15 may be delivered through two conveyors in end
It is customary in war vessels to locate the am
to end relation together with automatically op
munition magazines or storage chambers in the
lower part of the ship where the possibility of
their contents being exploded by enemy projec
tiles is most remote. The guns which use the am
erating transfer means for transferring ammu
nition between the conveyors.
‘7
_
g
It is a further object to provide such- a con
20 veyor system in which ammunitionmay be auto
munition being situated on the upper decks of the
ship, either in turrets or on deck mountings, it
matically transferred between the two conveyors
while maintaining a ?ame-proof wall between '
is necessary to provide means for conveying am
munition from the magazine to a position-near
‘the two ends of the conveyor system.
A further object is to provide a conveyor-'sysé
tem incorporating a transfer mechanism where
in a rotary cylinder is provided for transferring
articles between the conveyors and to provide
suitable automatic drive mechanism for operat
ing the conveyors and the transfer mechanism
the guns where it may be readily placed in the
guns as needed.
Various types of conveyors have been hereto
fore provided for this purpose and where high
rates of delivery to rapid ?ring guns are required,
the so-called dredger type ammunition hoists 30 in timed relation.
7
have marked advantages over other types in use.
It is also an'object to provide a conveyor sys
Such a hoist usually comprises an endless chain
tem of the type described wherein a control
conveyor which is encased in a continuous
mechanism for the two conveyor drive mecha
tubular hoist trunk or casing extending through
nisms is responsive to the presence or absence
the ship from the loading station in or adjacent
of an article at the ends of the conveyors.
the magazine to the unloading station adjacent
Further objects and advantages of the present
the gun. This continuous hoist trunk provides a
invention will be apparent from the following
conduit which introduces the possibility of ?ame
description, reference being had to the accom-l
transmission to the magazine whenever acci
panying drawings wherein a preferred form of
dental explosions occur at the gun or whenever
an enemy projectile explodes in or near the hoist
trunk.
'
'
the. present invention is clearly shown.
In the drawings;
Fig- 1 is. a diagrammatic cross section of a ship
embodying a preferred form of the present in- ‘
In order to break this continuous path for
?ame travel to the magazine, it has been found
necessary heretofore to deliver the ammunition 45. vention.
Fig. 2 is a circuit diagram showing the hy
in two stages by two entirely independent ammu
draulic
circuits incorporated in the driving and
nition hoists with a transfer station where the
control mechanism of the present invention.
ammunition is carried manually from the de
Fig. 3 is a side view partly in section of a
livery end of the lower hoist to the loading end
of the upper hoist.
This construction, while sat- ' - transfer station incorporating the present inven
isfactory from the standpoint of safety of the
installation and effectiveness to prevent the
transmission of ?are-backs to the magazine, adds
considerably to the weight and cost of the instal
lation since each of the two sections of the hoist 55;
tion.
.
Fig. 4 is a verticalicross section through the
transfer station.
,
Fig. 5 is_Y aH horizontal cross
of Fig. 3.
’
r
section on line ‘575
.
.
2,403,887
3
Fig. 6 is a view corresponding to Fig. 3 showing
the opposite side of the mechanism.
Fig, '7 is a cross section on line 1-1 of Fig. 3.
Fig. 8 is a cross section on line 8—8 of Fig. 3.
connections of the conduits 58' and 6| with a pair
of conduits 63 and 65 leading to opposite ends of
the stroke regulating mechanism at the pump ‘58'.
The valves 45 and 56’ are formed integrally upon
Fig. 9 is an electrical circuit diagram showing C1 a common stem having an enlarged portion 61
around which is slidably mounted a lift piston
the interlock control mechanism.
69. The latter has a cylindrical upper portion ‘H
Referring now to Fig. 1 there is indicated dia
slidably ?tted in a chamber 13 which communi
grammatically a portion of a longitudinal sec
cates with the upper end of the bore 55 through
tion of a war Vessel having superimposed decks l0
and E2 of usual construction, the deck I?! being 10 a passage 15 formed in the spool of valve 56'. The
piston 69 has a portion 11 of larger diameter than
constructed of armor plate. The spaces between
the portion 1| and slidably ?tted in a chamber
the decks are divided into suitable compartments
'19 to which the conduit ‘68 leads. The bottom
by partitions [4 in any suitable fashion. Indi
wall of the piston 69 is provided with an opening
cated at I5 is a deck gun adjacent which is
mounted the delivery end l8 of a conveyor sys 15 forming a clear passage around the stem of valve
45 and having a seat on which the enlarged
tem 26 extending between the gun I6 and a com
portion 61 of the stem is adapted to rest for the
partment 24 which may be either a magazine
purpose of closing this passage. The space in
compartment for the storage of ammunition or
side the piston ‘ll communicates with the tank
a handling room adjacent such a compartment.
Within the compartment 24 is located a loading 20 through a passage Bl formed in the stem of the
valve 45. At its lower end the valve stem has a
station 26 of any suitable construction forming
roller 83 acting as a follower for a cam<85. _The
the lower terminus of the conveyor 26. The con
latter is connected by a suitable drive means not
veyor system 126 comprises two dredger type am
shown to the shaft of the. sprockets 46 so thatZ the
munition hoist sections 23 and 36 arranged in
end to end relation at a transfer station 32. The 25 cam 85 makes one revolution while the chains '44
and 46 travelv through one flight distance. VTh‘e"
transfer station 32 is located immediately below
cam 65 has a depression in which the roller 83
the armor deck and includes driving and control
is shown at rest. In this position the» valve 45 is
mechanism for operating both the hoist sections
completely closed while the valve 56' connects
28 and 36 and the transfer mechanism inside the
30 the conduit 63 to the pressure line 58f and the
transfer station 32.
conduit 65 to the tank line 6|. To either side of
Referring now to Figs. 2 through 9 wherein the
this depression are elevated'portions 81 which
construction of the transfer station 32 is illus
hold the valves in such a position that the valve
trated in detail, there is shown a casing 34 form
45 is opened to a considerable degree whilejthe
ing the lower end of the hoist section 28 and the
valve 56' still connects conduit 63 with conduit
upper end of the hoist section 36 to which the
58' and conduit 65 with conduit 6|. The re
casing 34 may be tightly sealed at the flanges 36
mainder of the ‘periphery of the cam 85 is raised
and 36. The casing 34 serves not only to en
still further so as to completely open the valve 45
close the drive sprockets 46 and 42 and the
and to reverse the connections at the valve 56‘.
hoist chains or conveyor bands 44 and 46 to which
When the valves are raised to this upper extreme
are attached carrying lugs 48 and 50, but also
position the valve stem has been lifted- higher
as a mounting for the hoist driving and control
than it is possible to lift the piston 69, so that the
mechanism. The latter may be of any suitable
enlarged portion 61 lifts» away from the seat in the
construction. The drive mechanism illustrated
bottom wall of the piston 69. The cam 85 and
and. control therefore comprises a ?uid motor 52
adapted to drive the sprockets 46 and 42 through 45 its drive mechanism are enclosed in a suitable
oil-tight housing not shown, the interior of which
worm- drives 54 and 56, the latter being connected
is connected to tank.
in driving relation by gearing 5'1 and shaft 59. A
The entire arrangement of the control unit- 64
variable displacement pump 58 (see Fig. 2) and
is such that whenever a shot of oil is admitted
an auxiliary pump 66 are driven by an electric
motor 62 to supply ?uid to the motor 52- through 50 through the conduit 68 to‘ the chamber 19, the
piston 69 is lifted due to the enlarged portion 6'!
a control unit 6%. The control unit 64 is con
being on its seat in the bottom wall of the piston
structed to control the displacement of the [pump
69. The piston 69 and both valves 45‘ and 56' are
56 and to control communication between the
accordingly lifted to a position just shortof the
pump 58 and the motor 52 through conduits 66 in
a manner to provide for automatically moving the 55 highest position to which the cam would lift
them. Thus the valve 45' is opened and the valve
hoist chains 44 and 46 through one ?ight when
56’ is reversed to cause the stroke. of the pump
ever a starting “shot” of fluid from the auxiliary
58 to be increased at a rate determined by the
pump 60 is admitted to the device 64 through a
volumetric capacity of the auxiliary pump 60.
control conduit 68.
For this purpose the control unit 64 comprises 60 Oil is delivered to. and returned from the fluid
motor 52 through the conduits 66, 41, and 53,
a body 4| having a cylindrical bore 43 in which is
thus ‘causing the motor 52 to operate, turning
mounted a spool valve 45 for the purpose of
the cam 85. The latter will contact the roller 83
blocking or opening the passage of oil between
after about one-quarter of a. revolution when
the conduits 66 and conduits 41. A second cylin
drical chamber 49 carries a spool valve 5| for the 65 the highest part of the cam strikes the roller 83,
thus lifting the valves 45 and 56’ a further
purpose of reversing the flow between the con
amount. This additional lift raises the enlarged
duits 41 and a pair of conduits 53 which lead to
portion 6'! off from the seat in the bottom wall
the ?uid motor 52. The body 4| also has at its
of the piston 69, thus permitting the oil trapped
upper end a bore 55 in which is mounted a spool
in the chamber T9‘ to.- esoape‘ through the opening
valve 56’ for controlling the stroke regulating
in‘ the bottom‘ wall of the piston 69 and through
?uid motor of the pump 58. A conduit 58' ex
the passage 8! to tank. As soon. as the cam has
tends from the auxiliary pump 60 to the upper
completed an approximate one-half revolution in
end of the bore 55 while a conduit 6| enters the
addition’, the roller 83‘ dropsdown to the campor
bore 55 at its mid-portion. The valve 56' is
adapted to selectively control and reverse the 75 tion 81,'thus reversing connections at Valve 56’
2,403,887
5
but not completely ‘closing the valve 45. v The
stroke of the pump ‘58 is thus reduced at a rate
of‘which‘ theshaftyl28 carries “a bevelgear I38
meshing with a ‘beveligear I32.'T ‘Thedatter
securedito-aspur'gear I34 meshing with “a spur
determined by the capacity of pump 68 causing
the motor 52 to decelerate. When the »cam;85
gears-J38 secured to a shaft I38 for'the sprockets
has completed a revolution, the roller 83-returns
to the position shown in the drawings, completely
. Pivotally mounted in the casing 34 adjacent the
closing the valve 45. At this time the enlarged
extension '18'are a pair of barriers or ?apper .
portion 61 again comes to rest on its seat in the
doors. I48 adapted to rest against the surface of
bottom wall of piston 69, thus placing the appa
the cylinder 88. The doors I 48 are of‘suf?cient
ratus in condition for restarting whenever an 10 widthto prevent ammunition‘ from accidentally
other shot of oil is introduced to the conduit 68.
falling from the recesses 86 or 88. on to the‘ con
It will be noted that should a shot of oil be in
veyor chain 44 when the doors are in the position '
troduced to the conduit 68 before the cam 85 has
illustrated. ‘The doors I48 are secured to pivot
made one revolution, the lift piston 69-wi1l not
shafts I42 which extend below the bottom of the
rise because a free path is opened from the cham 16 extension 18 and carry arms I44 connected by
ber 19 to tank through the passage in which the
a cross shaft I 46 for simultaneous operation. One
enlarged portion 61 seats. It will also be noted
- of the shafts I42 extends below the bulged por
that oil pressure from the auxiliary ‘pump is con
tion I41 of the casing 34 and projects outside
stantly exerted over the upper end of the valve
thereof, and carries secured to its lower end a
56' creating a bias for the entire stem assembly 20 trip arm I48 extending into the path of the wing
in the downward direction. Likewise this pres
cam I22 whereby the latter may swing the doors
sure is exerted over the annular area at the top
I48 open at certain times. Spring means, not
of the portion H of the lift piston 69 biasing the
shown, are provided for normally maintaining the
latter downwardly whenever pressure is relieved
?apper doors in the position illustrated.’ The
in the chamber 19 by the opening of the passage 25 other pivot shaft I 42 (Figure 4) carries at its
through the bottom wall of the piston 69.
'
lower end and within a bulged portion I49 of
The casing 34 is provided on its front face
casing 34 a cam I50 adapted to actuate through
above the sprockets 42 with an extension 18 hav
a roller follower I52, a lever I54 pivoted in the
ing an opening 12 of proper size and shape to per
casing 34 at I56. Outside the casing the lever I 54
mil; a piece of ammunition to pass therethrough. 30 is connected to actuate a stem I 58 of a ?apper
The extension 18 is hinged to the casing 34 at 14
door interlock valve I 68: (see Fig. 2) whenever the _
along one edge thereof and is adapted to be
?apper doors I “are open.
.
a
_
-~
clamped in sealing engagement therewith by'suit
Pivotally mounted in the casing 34 above the
able securing means 16. The extension-18 is
sprockets 42 is. an ejector arm. I62 which carries
formed with a cylindrical recess 18 within which 35 at its outer end a latch I64 adapted to permita
is mounted a transfer cylinder 88. The cylinder
piece of ‘ammunition such as I66 to move up;
88 is pivoted on bearings 82 at the top and bot
wardly past the arm I62 when the arm is in the
tom ends thereof, the upper bearing being mount
position shown in Fig. 4. The arm I62 is secured
ed in a removable cap member 84 rigidly se
to a shaft I68 (Figure 7) which carries at its outl
cured to the extension 18. The cylinder 88 is 40 ward end a depending trip lever I18 adapted to
provided with recesses 86 and 88 of suitable shape
be actuated'by the wing cam I24. A stop pin I12
to receive a piece of ammunition Within the con
limits the downward movement of the arm I62.
?nes of the cylinder so that the latter may rotate
The portion of the casing 34 which surrounds the
between the position illustrated and a position
sprockets 42 is formed with an opening I14 in the
180° away in which the recess 86 is in‘ register 45 top thereof through which ammunition is deliv-~
with the opening 12 and the recess 88 is opposite
ered by the carrier lugs 58. Stationary guide
the chain 44.
members I16 are formed adjacent the opening
The lower end of the cylinder 88 has secured
I14 on‘ either side of the path of the ejector arm
thereto a shaft 98 which carries a pinion 92 for
I62 for guiding ammunition into the opening I14.
driving the shaft 98 through a slip clutch mech
A removable cover member I18 is secured to the
anism 94. The latter mechanism is‘ of any "suit
extension 18 and to the casing 34 when the
able type arranged to yield upon the'application
former is secured in the position shown in the
of excessive torque and to have two positions 180°
drawings. A pair of pivoted latches I88 (Fig.8)
apart in which the clutch is effective to drive
are secured in the cover I18 adjacent the open
the shaft 98. The pinion 92 engages with a seg
ing I14 to retain ‘ammunition which is delivered
through the opening I14‘and prevent its return
therethrough.
'
at the bottom of the extension 18. The pivot I88
is embraced by ?ange portions I82 (Fig. 8) of a
Pivotally secured in the casing 34 below the
closure member I84 which is secured to the bot
opening I14 is an upper trip member I82 for
tom of the extension 18 by bolts I86 and which 60 the lower hoist section 38 which is connected
closes an opening I88 formed in the casing 34
through a shaft I84, lever I86, link I 88 and lever
above the sprockets 42. The opening I88 is of
I98 to a cam I92 adapted to actuate an interlock
suitable size and shape to permit the pinion 92
valve I94 (see Fig. 2). Pivotally mounted. in the.
and clutch mechanism 94 as well as the arm 98
casing 34 at I96 is a lower trip I98 for the upper
to pass therethrough when the extension 18 is 65 hoist section 28 which is adapted to actuate
swung away from the casing 34 on its hinges
through a lever 288, an interlock valve 282. The
14. Outside the casing the arm 98 carries a de
lever 288 may also be actuated manually bythe
pending pin H8 adapted to seat in a groove II2
handle portion thereof if necessary.‘ The lower(
mental gear 96 formed on arm 98 pivoted at I88
formed on a cam H4. The cam H4 is rotatable
trip I98 is adapted to be depressed by a piece of
on a shaft I I6 secured in aboss M8 on the :ex 70 ammunition such as 284 when it is placed‘ in.potension 18 in line with the pivots of the hinges
sition on the hoist chain 44. A solenoid operated; ’
interlock valve 286 is mounted together with the
interlock valves I68,v I94, and 282 in an interlock
pinion I26 is keyed to a shaft I28 projecting into.
valvebody/288. Thevalve 282 is adapted to con-'
the casing of the worm drive 54 on the interior 75 nect a'conduiti 2| 8 with a. conduit 2| 2 whenever
14. The cam I I 4 has secured thereto'a bevel gear
I28 and a pair of wing cams I22 and I24. A bevel
2,403,887
7
the lower trip I98 is depressed and to connect a
conduit 2I4 with a conduit 2I6 whenever the trip
I98 israised by the removal of a piece of ammu
nition therefrom. The valve I94 is arranged to
connect the conduit 2I2 with a conduit 2I8 when
ever the upper trip I82 is released by the removal
of ammunition from the upper end of the lower
hoist section 36 and to connect conduits 2I6 and
2I8 when a piece of ammunition lies under the
trip I82‘.
The valve 2ll6is adapted to connect
conduit 2I8 and a conduit 220 whenever a sole
noid 222 is energized and to block communica
tion therebetween when the solenoid is deeper
8
there must be a piece of ammunition present at
the end which is used for loading and no ammu
nition present at the ‘end to which it' is delivered.
:In‘ operation with the motor 62 ‘and the pumps
58 'and‘60 running and with the hoist at rest due
to the presence of a piece of ammunition at the
delivery station I8, 't'r‘ip' 224 keeps the solenoid
222 deenergized so that pressure ?uid from the
pump 60 is blocked- off from the conduit 68 at the
valve 206'. Assuming‘ a piece of ammunition to
lie on 'the lower tr'ip I88 and a piece of ammu
nition to rest in the recess 88‘ and that a piece
of ammunition has been manually loaded at the
loading station 26 to ‘rest on the trip 226 and the
gized. The valve I60 is adapted to open com
munication between the conduit 220 and conduit 15 ammunition removed from the delivery end I8,
?uid pressure will be admitted to conduit 68 and
68 whenever the ?apper doors I48 are closed ‘and.
the motor 52 will drive the hoist chains Y44 and
to interrupt communication when the ?apper
46. As soon as the chains '44 and ‘46 start to move
doors are open.
the cams II4, I22 and I24 are caused to rotate
The solenoid 222 is under the control of an
upper-trip 224‘ for the upper hoist 28, a lower trip 20 by the gearing I20, I26, I36, I32, I34, and I36
and shaft I28. The gear ratio between shaft I38
226 for the lower hoist 30 and a ?apper door cam
and cam II4 is such as to produce one half a
228 at the loading station 26 as well as a reverse
revolution of the cam II4 while the hoist chains
lever 230; For this purpose the upper trip 224
44 and ‘46 move through the distance of one
actuates- a three-way switch 232: the lower trip
'
226 actuates a three-way switch 234; the cam 228 25 ?ight.
During the initial movement of thev chains the
actuates a make and break switch 236; and the
cam II4 moves through a dwell portion. There
reverse lever 230 actuates a pair of three-way
after the cam II4 moves the arm 98 and pin II!)
switches 238 and 248. The lever 23!!’ also actu
to actuate the pinion 92 and cylinder 80 through
ates a reverse interlock valve 242 for connecting
a conduit 244 leading from the auxiliary pump 68 30 half a revolution. The direction of rotation of
the cylinder 86 is reversed ‘on. alternate hoist
either to the conduit 2H] or the conduit 2I4.
cycles; that is, during one ?ight movement, the
The main reverse valve 5| within the control unit
cylinder 66 may rotate" clockwise while during
64 is also simultaneously controlled by the reverse
the next ?ight movement it will rotate counter
lever 23!] whereby the connection between the
pump‘ 58 and the ?uid motor 52 may be reversed 35 clockwise. Considerably ‘before the end of a
?ight, the cam II4 moves to ‘a second dwell por
for operating the hoist to lower ammunition.
tion and thereafter-the cam I22 actu'at'es the‘ trip
Referring now to Fig. 9 the electrical circuit
arm I48 to open the ?apper doors I40 and simul
for the switch system which operates the solenoid
taneously the cam I24 actuates the arm I'IO to
222 is illustrated. The position of the various
lift the ejector arm I62. The spacing between
switches illustrated in Fig. 9' corresponds to the
the adjacent lugs 59 is- such as to provide some
position of their operating parts illustrated in
overtravel ‘of the lug 50 past the position shown
Fig‘. 2. From this it will be seen that with the
in Fig. 4 before the next lug 56 comes into posi
reverse lever 238 in position for hoisting ammuni
tion'under the ‘lower trip 226. The cams I22 and
tion as shown in Fig. 2, the solenoid 222 is ener
giz‘ed' only when the ?apper doors 228 are closed, 45 I24 operate during this additional movement at
the end of a cycle and transfer the ammunition
the lower trip 226 is depressed by a piece of
delivered by the hoist section 30 to the recess 88
ammunition, and the upper trip 224 is released
and transfer the ammunition'in the recess 86 to
by the removal of ammunition from the delivery
position on the lower trip I98. Thereafter as
end I8. With the reverse lever 236 in the lower
soon as the piece of ammunition delivered to‘ the
ing position the solenoid 222 is energized only
delivery station I8‘ is removed and another piece
when the lower ?apper doors are closed, when
of ammunition- is placed’ in the loading station
there is no ammunition on the lower trip 226,
26, the hoist again operates through one cycle,
and when a piece of ammunition has been placed
the same as before.
in the delivery end I8 to deflect the upper trip
If at any time during the operation of the
224. The complete electric and hydraulic inter
hoist an accidental explosion should occur adja
lock system is thus effective, when the reverse
cent the gun or in the trunk of the hoist section
lever 230 is set for hoisting, to admit ?uid from
28 due to a hit by an enemy shell, the trans
the‘ auxiliary pump 68 to the control unit 64
mission of flare~backs o'r ?ame travel of any kind
through conduit 68 only when both the ?apper
to‘ the compartment 24 is‘ effectively prevented at
doors I48 and the ?apper doors at the loading sta
the transfer station 22. It will be noted that no
tion 26 are closed, when there is no ammuni
matter what position of the cylinder 80, there is
tion‘ in the delivery end of both hoist sections 28
no path‘ for ?ame to travel from the trunk of
and 30, and when there is a piece of ammunition
the hoist section 28 to thetrunk of the hoist
in place on the lower trips I98 and 226. Only
when all of these conditions have been ful?lled 65 section 30. The cylinder 80" forms a seal at the‘
opening ‘I2 by its engagement with the recess 18
will an impulse of pressure ?uid be supplied to
and any gas pressure‘ existing in the trunk of
the‘ control unit 64‘ for starting the conveyor drive
the hoist section 28 above the pressure in the.
mechanism to operate‘. When the reverse lever
trunk of the hoist section 38 tends to force thev
23!] is moved to lowering position, the reverse
- cylinder 86 into tighter engagement with the
switches 238' and 240' reverse the response of the
walls‘ of opening 12. The are of contact of the
upper trip 224- and the lower trip 226 ‘while the
recess ‘I8 with the‘ cylinder 80 is substantially
interlock‘ i‘eve‘rs‘e valve 242 reverses the response
greater than the arc subtended by the recesses
of the lower trip I98 and the upper trip I82. Thus,
86 and 88; By this construction it is insured
it will be seen that for either direction of opera
honor the hoist, it is necessary that for each hoist 75 that the opening through which ammunition is
2,403,887
9.
transferred from the hoist section 30 to the hoist
section 28 is maintained sealed at all times.
For lowering ammunition the casing I18 is
10
removed and the extension ‘In and the mechanism
carried thereby is unfastened at the fastenings ‘I6
and swung outwardly from the upper section
of the casing 34. This exposes the ?apper doors
nitionreceiving recess arranged to receive a piece
of ammunition from the second conveyor and
upon rotation through a predetermined angle
about an axis generally parallel to line of move
ment of the conveyors to deliver the piece of
ammunition to the ?rst conveyor.
2.11113; conveyor system for delivering ammu
I40 as well as the opening I ‘I4 so that ammuni
nition between a‘ loading station adjacent a stor
tion may be manually transferred from the hoist
age compartment and a station for use the com-'
section 28 to the hoist section 30. During lower 10 bination of'a' ?rst endless band conveyor having
ing operation the ?apper doors I40 and those at
a delivery end adjacent the station for use,'a
the loading station 26 may be latched open by
second‘endless band conveyor having a loading
detent mechanism, not shown, for removing am
end'at the‘ loading station, said conveyors'being
munition from the lower trips I98 and 226. Dur
arranged in substantially end to end relation, a
ing lowering operation the interlock system oper 15 flame-proof casing surrounding the ?rst conveyor
ates in the manner previously described to initi
and transfer means for transferring ammunition’
ate operation of the hoist drive mechanism only
from ‘the second conveyor to the ?rst conveyor
when ammunition has been placed in the upper
comprising a rotatable cylinder having an ammu
ends of both hoist sections and has‘been removed
nition receiving recess arranged‘toreceive'a' piece‘
from the lower ends thereof. The hoist may also 20 of ammunition from the secondwconve‘yor'and
be operated to raise ammunition should an acci
upon rotation "through a predetermined angle
dent befall the automatic transfer mechanism by
swinging it outwardly as described for lowering
about an axis generally‘ parallel to line'of'move
operation since the action of the interlock system
is independent of the position of the extension ‘I0.
ammunition to the ?rst ‘conveyor, said" cylinder
cooperating with said casing to maintain‘ a flame
During operation with manual transfer during
either lowering or hoisting the ejector arm I62
is preferably rendered inoperative by manually
ment of _the conveyors to deliver v_the ‘pieeeor
proof seal between the loading station ‘and the
station for use at all times.
'
'
3. In aconveyor system for delivering 'arnmu- .7
nition between a loading station adjacent a stor
raising the same upwardly and inserting a hold
ing pin through a hole 246 in the casing 34. A 80 agecompartment and a station for use the com
projection 248 adjacent the guide' I15 abuts a
bination of a ?rst endless band conveyor having a
recess 250 on the latch I64 when the ejector arm
delivery end adjacent the station for use, a'sec
I62 is raised su?iciently to permit the holding
ond endless band conveyor having a, loading end
pin to be inserted underneath it through the hole
at the loading station, said conveyors being ar
246. The lug 248 thus retracts the latch IIiII-from 35 ranged in substantially end to end relation, a
the path of the ammunition into and out of the
?ame-proof casingv surrounding the ?rst con
hole I14. During operation with manual trans
veyor, transfer means ,for transferring ammuni- '
fer while hoisting suitable detents 252 which are
tion from thesecond conveyor to the ?rst con-_
normally held in ineffective position by a handle
veyor comprising a rotatable cylinder having an _
retaining mechanism 253 may be rendered effec
ammunitionireceiving recess arranged‘to receive‘
tive to prevent the fall of ammunition from raised
a piece, of ‘ammunition from the second conveyor ;
position whenever the lug 5!) passes‘ beyond the
and uponrotation through a predetermined angle
position illustrated in Fig. 4.
v
"
about an ‘axis generally parallel tov line ofmove; _
_When initially ?lling the hoist with pieces of
ment of theconveyors to deliver the piece of ‘am
ammunition if the latter has been completely 45 munition to the ?rst conveyor, and ejector means '
emptied, it will be noted that the lower trip lever
for moving ammunition from the second conveyor
toward the ammunitionreceiving recess. ’ _
,
I98 will not be depressed during the ?rst few
4.,_In a conveyor system for delivering ammu
cycles because there will be no piece of ammuni
nition between a loading station adjacent a stor-_
tion placed thereon until the lower hoist 45 has
been completed ?lled from top to bottom. Under 50 age compartment and a station for-use the com
binationv of a ?rst endless band conveyor having
these conditions the lever 20!) (Figure 6) may
be manually operated to simulate the presence
of ammunition on the trip I98 and a cycle ini
tiated in this manner. As soon as the ?rst piece
a delivery end adjacent the station for use, a
second endless band conveyor having a loading
7 end at the loading station, said conveyors being
of ammunition reaches the transfer mechanism 55 arranged in substantially end to end relation, a
?ame-proof casing surrounding the ?rst cori-‘
and is deposited on the trip I98, further manual
veyor, transfer means for transferring ammuni
operation thereof is unnecessary.
tion from the second conveyor to the ?rst con
While the form of embodiment of the invention
veyor comprising a rotatable cylinder having an
as herein disclosed, constitutes a preferred form,
it is to be understood that other forms might be 60 ‘ammunition receiving recess arranged to receive
a piece of ammunition from the second conveyor
adopted, all coming within the scope of the claims
and upon rotation throughla predetermined angle
which follow.
about an-axis generally parallel to line of move
What is claimed is as follows:
>
ment of the conveyors to deliver the piece of am
1. In a conveyor system for delivering ammuni
tion between a loading station adjacent a storage 65 munition to the ?rst conveyor, ejector means, for
delivery end adjacent the station for useya sec
moving ammunition from the second conveyor
toward the ammunition receiving ‘recess, and
means for‘ operating said ejector means in timed
ond endless band conveyor having a loading end
relation to the operation of a conveyor. _
at the loading station, said conveyors being ar
ranged in substantially end to end relation, a
flame-proof casing surrounding the ?rst conveyor
and transfer means for transferring ammunition
from the second conveyor to the ?rst vconveyor
5. In aconveyor system for delivering ammuni- ‘
tion between a loading station adjacent a storage
compartment and a station for use the'combinai
compartment and a station for use'the combina
tion of a ?rst endless band conveyor having‘a
comprising a rotatable cylinder having an ammu
tion of a ?rst endless band conveyor havingia '7
delivery'end adjacent the station for use, _a sec-v
75 5ond endless band conveyor having a loading end- ‘7 "
2,303,887
1.1
at the loading station, said conveyors being ar
ranged in substantially end to end relation, a
?ame-proof casing surrounding the ?rst, con
veyor, transfer means for transferring ammuni
tion from the second conveyor to the ?rst con
veyor comprising a rotatable cylinder having an
ammunition receiving recess arranged to receive
apiece of ammunition from the second conveyor
12
the conveyors to deliver the article to the other
conveyor.
10. In a conveyor for delivering articles be
tween two stations the combination of a pair of
- endless band conveyors arranged in substantially
end to end relation, means forming a ?ame-proof
wall between one of said conveyors and one of
said stations, said wall having an opening be
tween the adjacent ends of said conveyors, means
and upon rotation through a predetermined angle
about an axis generally parallel to line of move IO associated with said opening for transferring ar
ticles therethrough comprising a rotatable cyl
ment of the conveyors to deliver the piece of
inder having an article receiving recess arranged
ammunition to the ?rst conveyor and means for
to receive an article from one conveyor and upon
operating said cylinder in timed relation to the
rotation through a predetermined angle about
operation of a conveyor.
an axis generally parallel to line of movement of
6. In a: conveyor system for delivering ammu
the conveyors to deliver the article to‘the other
nition between a loading station adjacent a stor
conveyor, and ejector means for moving an ar
age compartment and a station for use the com
ticle between one conveyor and the recess.
bination of conveyor means comprising- a plu
‘ 11. In a- conveyor» for delivering articles be
rality of endless band conveyors arranged in sub
stantially end to end relation and extending be 2.0! tween two stations the combination of a pair of
endless band conveyors arranged" in substantially’
tween said stations, ammunition transfer means
end to end‘ relation, means forming a ?ame-proof
at the adjacent ends of said conveyors, means for
wall between one of said conveyors and one of
driving the conveyors simultaneously through a
said stations, said wall having an opening be
predetermined cycle of operation and control
means for the driving means e?‘ective to initiate 25? tween the- adjacent ends of said conveyors, means
associated with said opening for transferring
operation of- the conveyors only when a piece
articles therethrough comprising a rotatable cyl
of ammunition has been loaded onto each con
inder having an article receiving recess arranged
veyor band, at the loading end thereof and any
ammunition brought to the delivery end of each
to receive an article from one conveyor and upon
conveyor’ has been removed.
7. In a conveyor system for delivering ammue
nition between a loading station adjacent a. stor
age compartment and: a station. for use the com.
bination of- conveyor means comprising a pin-.
rotation through a predetermined angle about
an axis generally parallel to line of movement
of the conveyors to deliver the article to the other
conveyor, ejector means for moving an article;
between one conveyor and. the recess, and means
rality of endless band‘ conveyors arranged, in sub
stantially end to end relation and extending. be,»
tween» said stations, ammunition trans-fer means,
at the adjacent ends of said conveyors, means for
for operating the ejector means in‘timed' rela
tion to the operation of the conveyor.
driving the conveyors. simultaneously and the
endless‘ band conveyors arranged in substantially
12. In a conveyor for delivering articles be
tween two stations the combination of a pair of
transfer means through a predetermined- cycle. of 40? end to end relation, means. forming a ?ame-proof
wall between one of said conveyors and one of
operation and control means for the driving
said stations, said wall having an opening: bemeans effective to‘ initiate operation of the. con
tween the adjacent ends of said" conveyors, means
veyors only- when a piece of ammunition has been
_ associated with said opening’ for transferring'ar
loaded onto each conveyor band at the loading
ticles therethrough comprising a rotatable, cyl
end- thereof and any- ammunition brought tothe
inder having an article receiving recessrarranged
delivery end or each. conveyor has been removed.
8. In a conveyor system for delivering ammu
nition between a loading station adjacent. a stor
age compartment and a station for use the come
bination of conveyor means comprising a, plu 50"
rality of endlessband conveyors arranged in sub-.
stantially end to end relation and extending be
tween said stations, means for driving the con
to receive an article from one conveyor and‘ upon
rotation through a predetermined angle about
an axis generally parallel to line- of movement of
the conveyors to deliver the article to the other
conveyor, and means for operating the cylinder
in timed relation to the operation of the conveyor.
13. In a conveyor for delivering articles be
tween two stations the combination of a pair of
veyors simultaneously through a predetermined
cycle of operation and control means for the
endless band conveyorsarranged in substantially
end to end relation, means forming a ?ame-proof
driving means effective to initiate operation of
wall between one of said conveyors and one of
the conveyors only when a piece of ammunition
said stations, said wall having an opening be
has been loaded onto each conveyor band at the
tween the adjacent ends of said conveyors, means
loading‘ end thereof and any ammunition brought
to the delivery end of each conveyor has been 60 associated with said opening for transferring ar
ticles therethrough from one conveyor to the
removed.
other and cooperating with said opening to main
9. In a conveyor for delivering articles between
tain a ?ame-proof seal between said stations at
two stations the combination of a pair of endless
band conveyors arranged in substantially end to 65 all times, driving means for operating both con
end relation. means forming a flame-proof wall
between one of said conveyors. and one of said
stations, said wall having an opening between the
adjacent ends of said conveyors, and means as
veyors and the transfer means in timed relation,
and means for controlling operation of the driv
ing means operable to initiate operation thereof
only when an article has been placed on the load
ing end of one conveyor band, and any article
sociated with said opening for transferring ar 70 delivered has been removed from the other con
ticles-therethrough com-prising a rotatable cylin
veyor band.
der having an article receiving recess arranged
14. In a conveyor for delivering articles be
to‘ receive an article from one conveyor and upon
tween two stations the combination of a pair oi
rotation through a predetermined angle about
endless band conveyors arranged in substantially
an axis generally parallel to line of movement of 75 end to end relation, meansforming a flame-prooi’
2,403,887
1.3
wall between one of said conveyors and one of
said stations, said wall having an opening be
tween the adjacent ends of said conveyors, means
associated with said opening for transferring ar
ticles therethrough from one conveyor to the
other and cooperating with said opening to main
tain a ?ame-proof seal between said stations at
all times, driving means for operating both con
veyors and the transfer means in timed relation,
14
adjacent the station foriuse, a second conveyor
vhaving a loading end at the loading station,
driving means for the conveyors, means for con
trolling the driving means and responsive to the
loading and unloading of the conveyor for initi
ating a cycle of operation of the driving‘ means,
a ?ame-proof casing surrounding the‘ ?rst con
veyor and transfer means for transferring am
munition from the .second conveyor to the ?rst.
and means for controlling operation of the driv 10 conveyor and cooperating with said casing to.
ing means and effective to prevent operation of
maintain a ?ame-proof seal between the loading
the conveyors in the event of failure of the trans
station and the station for use at all times.
fer mechanism to properly transfer an article
17. In a conveyor system for delivering am- ‘I
from one conveyor to the other.
15. In a conveyor system for delivering am
munition aboard a war vessel from a magazine
below the armor deck to a gun above the armor
deck the combination of an endless band conveyor
having a delivery end adjacent the gun, a second
munition between a loading station adjacent a.
15 storage compartment and a station for use the
combination of a ?rst ‘conveyor having a delivery
end adjacent the station for use, a second con
veyor having a loading end at the loading sta-y
tion, driving means for the conveyors, means for
conveyor having a loading end adjacent the mag
controlling the driving means and responsive to
azine, a ?ame-proof casing surrounding the ?rst 20 the loading and unloading of the conveyor for
conveyor and transfer means adjacent and below
initiating a cycle of operation of the v“driving
the armor deck and above the magazine for trans
means, a ?ame-proof casing surrounding the ?rst
ferring ammunition from the second conveyor to
conveyor, transfer means for transferring am
the ?rst and cooperating with said casing to
munition from the second conveyor to the ?rst
25
maintain a ?ame-proof seal between the maga
conveyor and cooperating with said casing to
zine and the space above the armor deck at all
maintain a flame-proof seal between the loading
times.
station and the station for use at all times, and
16. In a conveyor system for delivering ammu
driving means for operating both conveyors and
nition between a loading station adjacent a stor
30 the transfer meansin timed relation.
age compartment and a station for use the com
bination of a ?rst conveyor having a delivery end
RALPH L.‘ TWEEDALE. ‘
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