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Патент USA US2403886

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July 9, 1946.
R. |_. TWEEDALE
2,403,886
AMMUNITION HOIS'I'
Original Filed Oct.‘ 3, 1936
5 Sheets-Sheet 2
R. L Tw E E D A L E
,40386
AMMUNITION HOIST
Original Filed Oct. 3, 1936‘
5 Sheets-Sheet 3
INVENTOR
5y , 14.
R. L. TWEEDALE
2,403,88
AMMUNITION HOIST
Original Filed Oct. 3, 1936
5 Sheets-Sheet 4
INVENTOR
5y
, 146.
R. |_. TWEEDALE
2,403,886 '
AMMUNITION HOI‘ST
Original Filed Oct. 3, 1936
5 Sheets-Sheet 5
INVENTOR
MZW
2,403,886
Patented July 9, 1946
UNITED STATES PATENT OFFICE
2,403,886
AMlVIUNITION HOIST
Ralph L. Tweedale, Waterbury, Conn, assignor to
The Waterbury Tool Company, Waterbury,
Conn., a corporation of Connecticut
Application October 3, 1936, Serial No. 103,898
Renewed October 28, 1939
14 Claims.
(C1. 89—46)
1
This invention relates to power transmissions
and more particularly to a conveyor for deliver
:ng articles from one station to another wherein
a ?re hazard is present at one station and in
which it is desired to prevent the possibility of
flame transmission between the two stations at
all times, while permitting the continued passage
of articles between the stations. The invention is
particularly adapted to delivering ammunition
aboard ship from an ammunition storage com
partment to a position at the guns for use therein,
2
.
quired for handling ammunition at the transfer
station, which not only increases the number‘ of
men required for each gun to be ?red but'pre
sents also a retarding element in the delivery of
ammunition since'it introduces one more place
for unavoidable human errors and delays to inter
fere with the intended operation of the hoist. .
It is an object of the present invention to pro
vide a conveyor particularly adapted for delivery
of ammunition directly between a loading station
adjacent the magazine and an unloading. station
adjacent the gun by which ammunition may, be
although it will be understood that the invention
delivered through a continuous closed casing
may be adapted to other uses wherein similar con
whereby transmission of ?are-backs to the'load
ditions and problems are encountered.
It is customary in war vessels to locate the 15 ing station may be prevented without requiring
ammunition magazines or storage chambers in
the lower part of the ship where the possibility
of their contents being exploded by enemy pro
an intermediate transfer station. 7
D
,
_
It is also an object to provide a conveyor, for
delivering articles between two stations which are
separated by a ?ame-proof wall having an open
jectileS is most remote. The guns which use the
ammunition being situated on the upper decks 20 ing at one station adjacent the conveyor, and in‘
which is incorporated‘ means for passing articles 7
of the ship. either in turrets or on deck mount
through the opening while maintaining a ?ame
ings, it is necessary to provide means for con
proof seal at all times.
veying ammunition from the magazine to a posi
A_ further object is to provide a loading station
tion near the guns where it may be readily placed
25 fora conveyor having an article passing meche
in the guns as needed.
_
anism which is actuated by a separate motor ~
Various types of conveyors have been hereto
means independent of the conveyor drive mecha
fore provided for this purpose and where high
rates of delivery to rapid ?ring guns are required,
It is also an object to provide a loading station
the so-called dredger type ammunition hoists
have marked advantages over other types in use. 30 for a conveyor in which a reciprocatingarticle
passing member "is mounted adjacent a wall open
Such a hoist usually comprises an endless chain
ing and is provided with at least one article re
conveyor which is encased in a continuous tubular
ceiving recess adapted to be alternately brought
hoist trunk or casing extending through the ship
into register with the opening for receiving an
from the loading station in or adjacent the
magazine to the unloading station adjacent the 35 article and moved to a position where the article
may be transferred to the conveyor.
'/ _
gun. This continuous hoist trunk provides a
nism.
.
.
Further objects and advantages of the present
invention will be apparent from the following
description, reference being had to the accom
explosions occur at the gun or whenever an enemy
projectile explodes in or near the hoist trunk.
40 panying drawings wherein a preferred form ‘of
the present invention is clearly shown. .
In order to break this continuous path for
In the drawings:
?ame travel to the magazine, it has been found
Fig. 1 is a diagrammatic cross section ‘ of a ,
necessary heretofore to deliver the ammunition
ship incorporating a preferred form of the pres
in two stages by two entirely independent ammu
conduit which introduces the possibility of ?ame
transmission to the magazine whenever accidental
nition hoists with a transfer station where the 45
ent' invention.
~
Fig. 2 is a front view of a loading station in
ammunition is carried manually from the de~
corporating the present invention.
_
.
livery end of the lower hoist to the loading end
Fig. 3 is a fragmentary cross section onlline
of the upper hoist. This construction, while sat
3—3 of Fig. 4.
.
isfactory from the standpoint of safety of the
Fig, 4 is a cross section on line 4-4 of .Fig. 3.
installation and effectiveness to prevent the trans 60
Fig. 5 is a diagrammatic view showing the
mission of ?are-backs to the magazine, adds con
hydraulic circuits incorporated in the conveyor
siderably to the weight and cost of the installa
drive and control mechanism.
, .
tion since each of the two sections of the hoist
Referring now to Fig. 1 there is indicated dia
must be provided with its own independent drive
mechanism. Furthermore additional crew is re 65 grammatically a portion of a longitudinal section
2,403,886
3
4
of a war vessel having superimposed decks In of
usual construction, the spaces between which are
divided by partitions I2 into suitable compart
ments.
Indicated at M is a deck gun and at
[6 a revolving turret having two or more guns
I8 mounted thereon in the usual fashion.
Ad
jacent the gun I4 is mounted the delivery head
29 of a dredger type ammunition hoist 2| hav
ing a trunk 22 extending downwardly through
the vessel to a compartment 24 which may be
either a magazine compartment for the storage
of ammunition or a handling room adjacent such
a compartment and in whichis located the load
ing end 25 of the hoist 2! together with suitable
driving mechanism for the hoist. In the turret
I6 is mounted a delivery head 26 of a second
‘H slidably ?tted in a chamber 13 which commu
nicates with the upper end of the bore 55 through
a passage 15 formed in the spool of valve 51.
The piston 69 has a portion ‘I6’ of larger diam
eter than the portion ‘H and slidably ?tted in a
chamber 18' to which the conduit 56 leads. The
bottom wall of the piston 69 is provided with an
opening forming a clear passage around the
stem of valve 45 and having a seat on which the
enlarged portion 61 of the stem is adapted to rest
for the ‘purpose of closing this passage. The
space inside the piston 16' communicates with
the tank through va passage 80’ formed in the
stem of the valve 45. At its lower end the valve
stem has a roller 82' acting as a follower for a
cam 85. The latter is connected by a suitable
drive means not shown to the shaft of the sprock
ets 49 50 that the cam 85 makes one revolution
while the chain 38 travels through one night dis
tance. The cam 85 has a depression in which
the roller 82’ is shown at rest. vIn this position
dredger type ammunition hoist 21 having a trunk
28 extending vertically downward to a compart
ment 30 similar to the compartment 24, in which
is located the loading end 32 and the necessary
driving mechanism for the hoist 27. The hoist
trunk 28 is shown secured to the top deck If! at
the valve 45 is completely closed while the valve
the center of rotation of the turret I 6 and is
51 connects the conduit 63 to the pressure line
stationary relative to the turret although it will
59 and the conduit 65 to the tank line 60'. To
be understood that the ammunition hoist 2'! may 25 either side of this depression are elevated por
be mounted to revolve with the turret i6 if de
tions 81 which hold the valves in such a position
_
that the valve 45 is opened to a. considerable de
Referring now to Figs. 2 through 5 wherein the
gree while the valve 51 still connects conduit 63
construction of the loading ends 25 and 32 is
with the conduit 59 and conduit 65 with conduit
illustrated in detail, there is shown a casing 34 30 60'. The remainder of the periphery of the cam
forming the lower end of the hoist trunk to which
85 is raised still further so as to completely open
the casing 34 may be tightly sealed at the ?ange
the valve 45 and to reverse the connections at
36. The casing 34 serves not only to enclose the
the valve 51. When the valves are raised to this
drive sprockets 49 and the hoist chain or con
upper extreme position the valve stem has been
sired.
veyor band 38, having conveyor lugs 39, but also
as a mounting for the hoist driving and control
mechanism. The latter may be of any suitable
lifted higher than it is possible to lift the piston
69, so that the enlarged portion 61 lifts away from
the seat in the bottom wall of the piston 69. The
construction. The form of drive mechanism and
cam 85 and its drive mechanism are enclosed
in a suitable oil-tight housing not shown, the ‘in
tor 42 adapted to drive the sprockets 40 through
terior of which is connected to tank.
a worm drive 44. A variable displacement pump
The entire arrangement of the control unit
46 (see Fig. 5) and auxiliary pump 48 are driven
52 is such that whenever a shot of oil is admitted
by an electric motor 50 to supply ?uid to the
through the conduit 56 to the chamber 18', the
piston 69 is lifted due to the enlarged portion
motor 42 through .a control unit 52. The control
unit 52 is constructed to control the displacement
6'! being on its seat in the bottom wall of the
piston 69. The piston‘69 and both valves 45 and
of the pump 46 and to control communication
51 are accordingly lifted to a position just short
between the pump 46 and the motor 42 through
of the highest position to which the cam would
conduits 54 in a manner to provide for auto
matically moving the hoist chain 38 through one
lift them. ‘Thus the valve 45 is opened and the
?ight whenever a starting “shot” of fluid from 50 valve 51 is reversed to cause the stroke of the
pump 46 to be increased at a rate determined'by
the auxiliary pump 48 is admitted to the device
52 through a control conduit 56.
the volumetric capacity of the auxiliary pump 48.
For this purpose the control unit 52 comprises
Oil is delivered to and returned from the ?uid
a body 4| having a cylindrical bore 43 in which
motor 42 through the conduits 54, [Land 53, thus
is mounted a spool valve 45 for the purpose of 55 causing the motor 42 to operate, turning the cam
blocking or opening the passage of oil between
85. The latter will contact the roller 82' after
about one-quarter of a revolution when the high
the conduits 54 and conduits 41. A second cy
est part of the cam strikes the roller 82', thus
lindrical chamber 49 carries a spool valve 5! for
the purpose of reversing the ?ow between the
lifting the valves 45 and 5‘! a further amount.
This additional lift raises the enlarged portion 61
conduits 41 and a pair of conduits 53 which lead
to the ?uid motor 42. The body 4| also has at
off from the seat in the bottom wall of the piston
control therefor illustrated comprises a fluid mo
its upper end a bore 55 in which is mounted a
69, thus permitting the oil trapped in the cham
spool valve 51 for controlling the stroke regu
lating ?uid motor of the pump 46. A conduit 59
extends from the auxiliary pump 48 to the upper
ber 18' to escape through the opening in the bot
tom wall of the piston 69 and through the pas
end of the bore 55 while a conduit 60' enters the
bore 55 at its mid-portion. The valve 51 is adapt
ed to selectively control and reverse the connec
sage 8| to tank.
As soon as the cam has com
pleted an approximate one-half revolution in ad
dition, the roller 82' drops ‘down to the cam'por
tion 81, thus reversing connections at valve 51
but not completely closing the valve 45. The
tions of the conduits 59 and 60' with a pair of
conduits '63 and 65 leading to opposite ends of the 70 stroke of the pump '46 is thus reduced at.a rate
determined by the capacity of pump 48 causing
stroke regulating mechanism at the pump 46.
The valves 45 and 5‘! are formed integrally upon
the motor 42 to decelerate. When the cam 85
a common stern having an enlarged portion 61
has completed a revolution, the roller 82' returns
to the position shown in the drawings, complete
around which is slidably mounted a lift piston
69. The latter has a cylindrical upper portion 4. 5 ly closing the valve 45. At this time the enlarged
2,403,886
6
5
are a pair of directional control valves I00 and
portion 61 again comes to rest on its seat in the
bottom wall of piston 69, thus placing the appa
I02. The movable elements of valves I00 and I02
are mounted on a common stem I04 which is
ratus in condition for restarting whenever an
connected by a fork and collar connectionto a
other shot of oil is introduced to the conduit 56.
snap action lever I06. The latter is pivotedco
It will be noted that should a shot of oil be intro
axially'with the lever 92 and connected to be
duced to the conduit 58 before the cam 85 has
operated thereby through a spring I08 to pro
made one revolution, the lift piston 69 will not
vide snap movement of the lever I06 as the lever
rise because a free path is opened from the cham
92 reaches either end of its oscillation.
ber ‘I8’ to tank through the passage in which the
Mounted on the casing 34 behind a back wall
enlarged portion 61 seats. It will also be noted 10
IIO of the chamber 66 are a pair of carrier trip
that oil pressure from the auxiliary pump is con
valves H2 and H4. Each of these valvesiscon
stantly exerted over the upper end of‘ the valve
nected for operation by a trip lever H6 and H8,
respectively, each of which has a portion pro
jecting into the chamber 66 and into the re
5'! creating a bias for the entire stem assembly
in the downward direction. Likewise this pres
sure is exerted over the annular area at the top
cesses ‘I0 and 12 when opposite one ‘of the open‘
ings 60 and BI. The trip levers H6 and H8 are
adapted to be moved counterclockwise in Fig. 3
whenever a piece of ammunition is properly placed
in a recess ‘I0 or 12. Pivotally mounted in the
casing 34 adjacent the lower edgeof the open
an outward extension 58 having a pair of open
ing ‘I8 at I20 is a lower trip lever I22 adapted to
ings 60 and BI of proper size and shape to per
be depressed by a piece of ammunition'such as
mit a piece of ammunition to pass therethrough.
I24 when it is placed in position on the‘ hoist
The extension 58 is hinged to the casing 34 at 62
along one edge thereof and is adapted to be 25 chain 38. The lower trip'I22 is connected by an
arm I26 (see Fig. 5) ton, lower trip valve I28
clamped in sealing engagement therewith by suit
mounted'in a valve block I30. 'An upper trip
able securing means 64. The extension 58 is
valve I32 is also mounted’in the block I30 and is
formed with a chamber 66 in which is mounted
adapted to be actuated by solenoid I34 which in
a reciprocating carrier member 68 which forms
turn is controlled by an upper trip I36 located
a pair of adjacent recesses 10 and ‘I2. For this
at the delivery end of the hoist;
' ~ »
purpose the carrier 68 is formed with a bottom
The valve I28 is adapted to connect a conduit
wall ‘I4 and a, similar top wall, not shown, and
I38 with a conduit I40 when the trip I22 is de
with three vertical walls ‘I6 forming the sides
of the portion ‘II of the lift piston 69 biasing the
latter downwardly whenever pressure is relieved
in the chamber ‘I8’ by the opening of the pas~
sage through the bottom wall of the piston 19.
The casing 34 is provided on its front face with 20
pressed and to connect with a conduit I42 when.
of the chambers ‘I0 and 12. The width of the
chambers ‘I0 and ‘I2 and the spacing of the open
lugs 60 and 6| are such that the carrier 68 may
the trip I22 is raised. The valve I32 is adapted
to open communication between the conduit I40
be reciprocated between the position shown in
and the conduit 56 whenever the solenoid I34 is
energized and to close communication when the
Fig. 4 in which the recess ‘I0 is opposite the open
solenoid is deenergized. The solenoid I34 is‘un
ing 60 and a position to the left thereof in which
the recess ‘I2 is opposite and in register with the 40 der the control of the upper trip I36 through a
three-way switch I44 which is connected in cir
opening 6 I.
cult with a, three-way switch I46 adapted to be
Intermediate the openings 60 and 6| in the
actuated by a reversing lever I48. When the re
back wall of the chamber 66 is formed an open
versing lever I48 is set to hoist ammunition, as
ing 18 opposite the hoist chain 38 and with
which either of the recesses ‘I0 and 12 may reg
ister when the other is in register with an open
45
illustrated in Fig. 5, the switch I46 connects the
solenoid to the switch I44 so that the solenoid
will be energized from the source I 45‘v whenever
ing 60 or 6|. A pair of ?apper doors 1‘! are piv
the trip I36 ‘is released by removal‘ of ammunition oted in the casing 34 at the sides of the opening
from the delivery end of the hoist.‘ With 'the
‘I8 and are spring biased to closed position and
adapted to be opened at certain times by trip 50 reverse lever I48 set for lowering ammunition,
the switch I46 connects the‘switch I44 for op’
levers ‘I9 lying in the path of lugs 39. Bevel gear
posite action.
' ' '
ing 8| connects the trip levers ‘I9 to the pivot
The lever I48 also controls a reversing valve
shafts of the ?apper doors ‘IT. A lost motion
I50 for selectively connecting conduit I38 or the
drive connection at 83 permits the trip levers 19
to be moved downwardly without actuating the 55 conduit I42 with a conduit I52 leading from the
auxiliary pump 48, as well as controlling valve
doors ‘I1 during lowering operation of the hoist.
5I for reversing the operation of the motor 422
In front of the carrier 68 there is reciprocably
The valve I50 also connects the conduits I38 and
mounted a sliding door 80 of proper width to
I42 with drain conduits I5I and I53 when "not
close one of the openings 60 or 6| while leaving
the other open. The carrier 68 and the door 80 60 connected to conduit I52. The carrier trip valves
each carry rigidly secured thereto downwardly
H2 and II 4 are connected‘ by conduits I56 to -a
lower trip relay valve I58 which is adapted to
extending pins 82 and 84 respectively which pro
close communication between the conduits I 56
ject through slots 86 and 88 formed in the bottom
and a branch I60 of conduit I52 whenever lower
wall 90 of the extension 58. A lever 92 is pivoted
to the wall 90 on the lower side thereof embrac 65 trip'valve I28 admits ?uid to the conduit I48,
For this purpose a ‘conduit I82 extends from the
ing at its outer ends the pins 82 and 84 whereby
conduit I40 to the left-hand end of the relay
the carrier 68 and the door 80 are caused to
valve I58 for admitting pressure ?uid to the
move simultaneously in opposite directions. The
end surface of a large piston I64. ‘The large
pin 82 extends below the lever 92 to enter a bore
formed in an operating piston 94 which is re— 70 piston I84 is connected by a stem I66 to a small
piston I68, the space to the right of which is
ciprocably mounted in a pair of cylinders 96. The
connected to the expansion tank I70 through 'a
cylinders 96 are formed integrally with a cover
conduit I12.
‘
plate 98 which is removably secured to the bot
The large piston I 64 when in the position illus- I
tom wall 90 to cover the mechanism attached
thereto. Also formed integrally in the cover 98
trated blocks communication . between conduits
2,403,886
.7
8
doors 11 and the ammunition .in the recess 10
accordingly drops on to the chain 38 .and lower
left due to the release of pressure ?uid in the
trip 22 is ready for the next cycle of operation.
conduit I49, communication is established be
At the end of the movement of piston 94 the snap
tween the auxiliary pump 48 and the carrier trip
valves H2 and II4 through conduits I52, I59, Or acting lever IE6 is operated to shift the valves
Hi9 and I02 connecting the left-hand cylinder
and I56. Each of the valves H2 and H4 com
96 to valve H4 and connecting the right-hand
prise a piston valve I14 adapted to open com
cylinder 96 to the drain conduit I82. The hold
munication between the conduit I56 and a con
ing valve I18 is thereby permitted to ‘move .to
duit I16 leading to the corresponding directional
control valve I99 or I02, whenever the trip lever 10 the left again closing the by-pass I89 until such
time as pressure ?uid is again admitted to the
H6 or H8 is depressed by a piece of ammunition
conduit I16.
lying in one of the recesses 19 or 12. .A pres
While the form of embodiment of the ‘inven
sure operated holding valve I18 is also mounted
tion as herein disclosed (constitutes a preferred
in each valve block H2 and H4 and is moved to
form, it is to be understood that other forms
the right in Fig. 5 Whenever ?uid pressure is
might be adopted, all .coming ‘within the scope
admitted through the valve I14 to the conduit
of the claims which follow.
I16. This movement opens communication be
I60 and I56. When the piston I64 moves to the
What is claimed is as follows:
1. In a conveyor for delivering ammunition .be
so that when ?uid pressure is once admitted to 20 tween a loading station adjacent a storage .com
partment and a station for ‘use and .having an
the conduit I16 by the opening of valve I14, the
endless ?exible ammunition conveyor band, a
pressure is maintained therein through the .valve
?ame-proof casing surrounding the conveyor
I18 so long as there is any existing back pres~
band and means for driving the conveyor .band,
sure at the remote end of the conduit I16. The
valves I09 and I62 are adapted to selectively 25 the combination with the conveyor of means for
passing ammunition into said casing at the load
connect a cylinder 96 either with a conduit I16,
ing station and separate motor means for driv
as shown in Fig. 5, or to connect both a cyl
ing the ammunition passing ‘means, whereby .the
inder 96 and a conduit I16 with the expansion
ammunition passing means may ‘be operated
tank I10 through a branch I92 of the conduit I12.
while the conveyor is stationary.
In operation with the motor 59 and pumps 48
2. In a conveyor for delivering.ammunitionbe
and 48 running and with the hoist at rest due
tween a loading station adjacent a storage com
to the presence of a piece of ammunition at the
partment and a station for use and .having ‘an
delivery station, the trip I36 keeps the solenoid
endless ?exible ammunition conveyor band, a
I34 deenergized so that ?uid from the pump 48
is blocked off from the conduit 56 at the valve 35 ?ame-proof casing surrounding the conveyor
band and means for driving the conveyor band,
I32. Assuming a piece of ammunition to have
the combination with the conveyor of means for
been dropped from the recess 12 by the ?apper
tween the conduit I16 and conduit I56 through a
parallel path including a restrictive conduit I39
passing ammunition into said casing at the load
doors 11 and to lie on the chain 38 and the lower
ing station, separate motor means for driving the
trip I22, as illustrated in Fig. 5, as soon as the
ammunition is removed from the delivery station 40 ammunition passing means, and means respon
sive to the positioning of a piece of ammunition
trip I36 is released to energize solenoid I34, open
on the conveyor for controlling operation of said
ing valve I32 to admit pressure ?uid to the con
motor.
duit 56. The control unit 52 in response to the
3. In a conveyor for delivering ammunition -be—
admission of pressure ?uid to the conduit 56
tween a loading station adjacent a storage com
causes the ?uid motor 42 to drive the sprockets
partment and a station for use and having an
40 and chain 38 through one ?ight; that is,
endless ?exible ammunition conveyor band, a
through the distance to bring the next lug 39
?ame-proof casing surrounding the ‘conveyor
into rest position, as illustrated in Fig. 5.
band and means for driving the ‘conveyor band,
Assuming a piece of ammunition to have been
placed in the recess 10 through the opening 611 50 the combination with the conveyor of .means ,for
before the start of the hoist cycle, the trip H6
will be depressed so that valve I14 will be open.
passing ammunition into‘said casing at the load
ing station, separate motor means for driving'the
ammunition passing means, and means respon
With the piston 94 and the valve IUD lying in the
sive to positioning of a piece ‘of ammunitionin
position illustrated in Fig. 5, the piston 94 will
not be actuated at the beginning of the cycle 55 the ammunition passing means for controlling op
eration of said motor.
until the lug 39 has picked the ammunition off
4. In a conveyor for delivering ‘ammunition‘be
from the lower trip I22 and permitted the latter
tween a loading station adjacent a‘storage com
to raise, thus transferring the conduit I49 from
partment and a station for use “and having ‘an
the pressure line I39 to the drain line I42. As
soon as this occurs the lower trip relay valve I58 60 endless ?exible ammunition conveyor band, a
?ame-proof casing surrounding the conveyor
moves to the left admitting pressure ?uid from
the conduit ISO to the conduit I 56. The piston
94 is thereby caused to move to the left in Fig. 5
moving the carrier 66 to the left and through
the lever 92 moving the door 80 to the right in
Fig. 4. This action once started is continued
regardless of the release of trip IIE as the am
band and means for driving the conveyor band,
the combination with the conveyor of means-for
passing ammunition into said casing at the load
ing station including'a linearly reciprocable ‘car
rier having an ammunition'receivingrecess, and.
means cooperating with the ammunition passing
means for maintaining ‘a ‘?ame-proof seal be
munition moves to the left away from the same
because the holding valve I13 opens a connec
tween the inside and outside of the casing at all
tion around the valve I14 through the passage 70 times whereby the transmission of ?are-backs
I80. When the piston 94 completes. its move
from the use station to the loading v‘station is
prevented.
ment to the left, the recess 10 is opposite the
?apper doors 11 and the recess 12 is opposite the
5. In a conveyor for delivering ammunition :be
tween a loading station adjacent a storage com
opening 6|. Near the end of the ?ight the next
lug 39 actuates the trip levers 19 to open the 75 partment and a station for use and having ;an
2,403,886
endless ?exible ammunition conveyor band, a
?ame-proof casing surrounding the conveyor
band and means for driving the conveyor band,
the combination with the conveyor of means for
passing ammunition into said casing at the load
ing station including a linearly reciprocable car
rier having an ammunition receiving recess,
means cooperating with the ammunition passing
10
ible conveyor band, means for driving said con
veyor band, means forming a ?ame-proof wall
between said conveyor band and one of said stag
tions, said wall having an opening adjacent the
conveyor band through which articles may pass,
means associated with said opening for passing
articles therethrough and cooperating with said
opening for maintaining said opening sealed
against the passage of ?ame, separate motor
means for maintaining a ?ame-proof seal be
tween the inside and outside of the casing at all 10 means for driving the article passing means, and
means responsive to the positioning of an article
times whereby the transmission of ?are-backs
in the article passing means for controlling op
from the use station of the loading station is pre
eration of said motor.
~
vented, and separate motor means for driving the
11._In a conveyor for delivering articles be
ammunition passing means.
6. In a conveyor for delivering ammunition be 15 tween two stations the combinationof an endless
?exible conveyor band, means for driving said
tween a loading station adjacent a storage com
conveyor band, means forming a ?ame-proof wall '
partment and a station for use and having an
between said conveyor band and. one of said sta
endless ?exible ammunition conveyor band, a
tions, said wall having an opening adjacent the
?ame-proof casing surrounding the conveyor
band and means for driving the conveyor band, 20 conveyor band through which articles may pass,
means including a linearly reciprocable carrier
the combination with the conveyor of means for
having an article receiving recess associated with
passing ammunition into said casing at the load
said opening for passing articles therethrough
ing station, and means including an alternately
and cooperating with said opening for maintain
reversing ?uid motor for driving the ammunition
25 ing said opening sealed against the passage of
passing means.
?ame, and means for driving the article passing
7. In a conveyor for delivering ammunition be
tween a loading station adjacent a storage com
partment and a station for use and having an
endless ?exible ammunition conveyor band, a
means.
'
12 In a conveyor for delivering articles be
tween two stations the combination of an endless
?ame-proof casing surrounding the conveyor 30 ?exible conveyor band, means for driving said
conveyor band, means forming a ?ame-proof wall
band and means for driving the conveyor band,
between
said conveyor band and one of said sta
the combination with the conveyor of means for
passing ammunition into said casing at the load
ing station including a reciprocable carrier hav
ing an ammunition receiving recess, means co
tions, said wall having an opening adjacent the
conveyor band through which articles‘ may pass,
35 means associated with said opening for passing
articles therethrough and cooperating with said
opening for maintaining said opening sealed
operating with the ammunition passing means
for maintaining a ?ame-proof seal between the
against the passage of ?ame, and means includ
inside and outside of the casing ‘at all times
ing
an alternately reversing ?uid motor for driv
whereby the transmission of ?are-backs from the
the article passing means.
"
use station to the loading station is prevented, 40 ing13.
In a conveyor for delivering articles be
and means including a reciprocating piston motor
tween two stations the combination of an endless
?exible conveyor band, means for driving said
8. In a conveyor for delivering articles between
conveyor band, means forming a ?ame-proof
two stations the combination of an endless ?ex
ible conveyor band, means for driving said con 45 wall between said conveyor band and one of said
stations, said wall having an opening adjacent
veyor band, means forming a ?ame-proof wall be
the conveyor band through which articles may
tween said conveyor band and one of said sta
for reciprocating said carrier.
pass, means including a reciprocable carrier hav
tions, said wall having an opening adjacent the
ing an article receiving recess associated with
conveyor band through which articles may pass,
said
opening for passing articles therethrough and
50
means associated with said opening for passing
cooperating with said opening for maintaining
articles therethrough and cooperating with said
said opening sealed against the passage of ?ame,
opening for maintaining said opening sealed
means for driving the article passing means, and
against the passage of ?ame, and separate mo
means including a reciprocating piston motor
tor means for driving the article passing means.
9. In a conveyor for delivering articles between 55 for reciprocating said carrier.
14. In a conveyor for delivering articles be
two stations the combination of an endless ?ex
tween
two stations the combination of an endless
ible conveyor band, means for driving said con
?exible conveyor band, means for driving said
veyor band, means forming a ?ame-proof wall
conveyor band, means forming a ?ame-proof wall
between said conveyor band and one of said sta
tions, said wall having an opening adjacent the 60 between said conveyor band and one of said sta
tions, said wall having an opening adjacent the,
conveyor band through which articles may pass,
conveyor band through which articles may pass,
means associated with said opening for passing
means including a linearly reciprocable carrier
articles therethrough and cooperating with said
having an article receiving recess associated with
opening for maintaining said opening sealed
said opening for passing articles therethrough
65
against the passage of ?ame, separate motor
transversely
to the reciprocation of the carrier
means for driving the article passing means, and
and cooperating with said opening for maintain
means responsive to the positioning of an ar
ing said opening sealed against the passage of
ticle on the conveyor for controlling operation of
?ame, and means for driving the article passing
said motor.
means.
10. In a conveyor for delivering articles between
RALPH L. TWEEDALE. V
two stations the combination of an endless ?ex
16
Certi?cate of Correction
Patent No; 2,403,886.
July 9, 1946.
RALPH L. TWEEDALE
It is hereby certi?ed that errors appear in the printed speci?cation of the above
numbered patent requiring correction as follows: Column 5, line 19, for “piston 79”
read piston 69; column 9, line 54, claim 8, after “passing means” and before the period
insert the comma and Words , whereby the ammunition passing means may be operated
while the conveyor is stationary; and that the said Letters Patent should be read with
these corrections therein that the same may conform to the record of the case in the
Patent O?‘ice.
Signed and sealed this 29th day of October, A. D. 1946. '
[m]
LESLIE FRAZER,
First Assistant Commissioner of Patents.
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