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Патент USA US3098344

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July 23, 1963
c. F. SINDY
3,098,335
FLASH BULB FILLING APPARATUS
Filed Aug. 26. 1960
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United States Patent 0 ' IC€
3,098,335
Patented July 23, 1963
1
2
3,098,335
shredded material from the cutting mechanism. In ac
cordance with the invention, the apparatus includes a
scanning mechanism operatively connected to the vacuum
FLASH BULB FILLING APPARATUS
Clarence F. Sindy, Willoughby, Ohio, assignor to General
Electric Company, a corporation of New York
Filed Aug. 26, 1960, Ser. No. 52,142
5 Claims. (CI. 53—59)
system, the mechanism having a photocell so located that
a light beam to the photocell is interrupted or refracted
when a light bulb is properly placed in position on the ?ll
ing head. Under such circumstances, the ?lling apparatus
operates in a normal manner. However, should a broken
This invention relates to apparatus for ?lling flash
or cracked bulb be inserted on the ?lling head, or a
lamp bulbs with shredded charges of a combustible 1ight~
producing material and more particularly to apparatus 10 bulb omitted during a ?lling cycle, the light pattern ap
plied to the photocell will be varied so that the scanning
‘having a control system for detecting when a bulb is
mechanism operates the vacuum system to discontinue
broken, or misplaced, or missing at the bulb ?lling station
transport of a charge of shredded material to the ?lling
so as to prevent incorrect bulb ?ll or jamming of the ap
head. At the same time, the charge of material may be
paratus.
In the combined shred cutting and bulb loading appa 15 diverted to a collecting chamber in order to prevent any
accumulation of charges in the vacuum system or other
ratus disclosed in Geiger Patent 2,347,046 dated April 18,
parts of the apparatus.
1944, and in the apparatus for automatically ?lling ?ash
In the drawing,
bulbs disclosed in copending patent application Serial No.
FIG. 1 is a vertical sectional View through a bulb ?lling
52,209 ?led in the names of F. V. Kolda ‘and C. F. Sindy,
now Patent No. 13,032,948, assigned to the same assignee 20 apparatus constructed in accordance with the invention;
and
as the instant invention, the cutting mechanism operates
FIG. 2 is a diagrammatic perspective view of the es
continuously. In doing so, shreds or strands are cut from
sential elements of the apparatus.
a sheet of metallic foil and are fed to a plurality of ?lling
Referring to the drawing, the apparatus is provided
heads on which lamp bulbs have been placed. Unless
promptly removed in ?lling lamps, there may be an un 25 with a shred cutting mechanism including a rotary cutter
1, and a bulb ?lling mechanism including two bulb ?lling
wanted build-up of shredded material at the cutter which
heads v2—2’. Both mechanisms are of the type disclosed
makes it imperative that lamp bulbs he placed on the
‘in the aforementioned Geiger Patent 2,347,046. Both
are used in conjunction with mechanism for feeding lamp
30 bulbs to the ?lling heads including suction cups 3—~3'
cutting mechanism.
for automatically placing lamp bulbs 4 on the ?lling
With the automatic foil ?lling apparatus of the afore
heads 2-—2', as disclosed in the aforesaid Kolda and
said copending patent application, broken or cracked
Sindy patent application Serial No. 52,209. A charge
bulbs may be inadvertently placed on the ?lling heads, or,
?lling heads and ?lled with the combustible material at
a speed commensurate with speed of operation of the
infrequently a bulb may be missing ‘for a ?lling cycle of
of shreds is taken from the cutter 1 to each of the ?lling
the apparatus. In such instances, it is important that 35 heads 2—2', in turn, by the separate transport tubes
5—5’ extending therebetween, each charge being meas
the broken or missing bulb be detected in time to prevent
ured and directed through one or the other of the trans
completion of a ?lling cycle. Preferably the charge of
port tubes 5-5’ by the control afforded by a cam 6 and
shredded material is diverted to prevent manufacture of
cam operated switch 7 of the driving means for the
a defective bulb and also to prevent unwanted build-up
of the unused shredded material in the apparatus. The 40 cutter 1. A further control mechanism for the ?lling
heads 2—2' and the connected shred transport tubes
aforesaid unusual operating conditions of a missing or
5—5', renders these systems inactive when bulbs 4 are
defective bulb are taken care of by apparatus of the
either missing from the heads 2—2' or are broken in
instant invention which, under such circumstances, di
a manner to change the refraction of light beams directed
verts one or more charges of the shredded material away
45 across each head 2—2’ between light sources 8-8’ and
from the cutting mechanism to a collecting chamber.
photocells 9—~9'. Such control mechanism prevents a
Accordingly, it is an object of the invention to provide
charge of the shreds produced by the cutting mechanism
an improved ?ash bulb ?lling apparatus having a control
from clogging or otherwise disturbing the effectiveness
system which will detect a broken or defective bulb and
of the shred transport systems by causing the transport
prevent ?lling of the bulb with a charge of combustible
50 systems to be inoperative and the shreds to be withdrawn
light-producing material.
from the area of the cutter 1 by an auxiliary transport
Another object of the invention is to provide automatic
system including a suction tube 10. Such control mech
?ash bulb ?lling apparatus having means to detect when
anism includes solenoid valves 11—-11' and '12, respec
a bulb is missing from the ?ll position to prevent delivery
tively, which control a vacuum connection thereto and
of a charge of shredded combustible material to such
55 so the circulation of vacuum and air through the systems.
position.
Speci?cally, the cutter 1 is the source of the shreds of
A further object of the invention is to provide improved
apparatus for automatically ?lling bulbs with charges of
shredded light-producing material in which provision is
combustible light-producing material and creates, in the
course of its rotation, a succession of shreds at a uniform
rate by the shearing action of the plurality of cutting edges
about its periphery with respect to the stationary knife
made to divert the charge away from the ?lling station on
which the bulb is mounted in those instances in which the
bulb is cracked, or missing, or incorrectly positioned at
the station.
edge 13 on the bed 14 of the cutting apparatus. The
shreds are automatically cut from the forward edge of a
Brie?y, these and other objects of the invention are
effected by flash bulb ?lling apparatus which is provided
advanced across the knife edge 13 at a uniform rate by
thin sheet 15 of metallic combustible material which is
‘with a cutting mechanism for producing shreds or ?la 65 the rotation of the feed rolls 16 and 17.
ments of combustible material from a sheet of metallic
foil, a plurality of ?lling heads for introducing the
shredded material into the interior of the bulbs, and a
During all normal periods of operation of the ap
paratus, shreds are immediately picked up and carried
to the bulb 4 in one or the other of the ?lling heads 2—~2’
by the air sucked by vacuum into and through a transport
material ‘from the cutting mechanism to the ?lling heads. 70 tube 5 or 5’. The particular ?lling head 2 or 2’ and
transport tube 5 or 5' in use at any moment depends upon
A control means for the vacuum system operates so that
the position of the high and low portions of a cam 6 with
each ?lling head alternates with the other in drawing
vacuum system for transporting a charge of the shredded
3,098,335
respect to the switch 7 wlnch form the control for de
A
plied to the transport tubes 5-5’ so that charges of the
termining both the quantity of the charge of shreds in
the loading for each bulb 4 and the particular ?lling head
shreds are not drawn into the tubes. This prevents any
build up of shred charges within the tubes or ?lling heads.
2 or 2’ which will receive the charge. The cam 6 is turned
The leads 39-39’ connecting the ampli?er relays 36-36’
at a ?xed rate with respect to the rotation of the cutter
1 inasmuch as it is mounted upon a shaft 18 of a speed
and the opposite terminals of the solenoid valves 11-11'
provide the opposite line circuit to the ampli?er relays
36-36’ through the switch 7 and provide the means of
3
reducer 19 which is, in turn, driven by a shaft 20 of the
cutter 1 and maintains an inter-locked position with re
limiting the interval of operation of each relay to that
provided by the corresponding closure time of switch 7.
spect thereto regardless of how fast the cutter 1 is driven
from the source (not shown) through a belt 21 and l0 The light sources 8-8’ operate continuously as they are
directly connected to the line through the leads 40, the
pulley 22. Cam 6 is equally divided between high and
transformer 41 and leads 42.
low portions and, accordingly, maintains the switch 7
The sensitivity of the scanning function is in part de~
at its alternate switching positions, at which the line con
pendent upon the portion of the bulb 4 which intercepts
nection 23 is made through the circuits 24 or 24’ to the
vacuum control valves 11 or 11', for equal moments of 15 the beam from the light sources 8-8’ inasmuch as the
bulbs 4 are normally made of clear glass and can only
time and the manufacture of an equal charge of shreds.
effect the beam by refraction thereof. To this end, it is
The function of the vacuum control valve 11 or 11’ is, in
preferred that the axis of the beam be either above the
center of the bulb 4 and the ends of the shred inlet tubes
head 2 or 2’ through the lines 25 or 25’ and thereby cause 20 26-26’, as shown by the drawing, or else that the axis
be to one side of the center of the bulb 4 and the shred
air and the shreds to be pulled through transport tube 5
inlet tubes 26-26’. This means that the light beam
or 5’ and the inlet tube 26 or 26' into the interior of the
intercepts the bulb surface at an oblique angle and is
bulbs. The bulbs 4 seat ?rmly upon gaskets 27 or 27’
refracted away from the photocells 9-9’ su?iciently to
(FIG. 1) in the ?lling heads 2-2’ so that no leakage of
effect an appreciable change in the electrical output there
air disturbs the air flow entraining the shreds to the bulbs
of. The axial or laterally offset positions of the light beam
4 and the shreds are normally carried into the upper
are also capable of discovering bulbs 4 in certain off
bulbous parts of the bulbs 4. Further details of the con
center positions, where air can leak into the ?lling head 2
struction and function of the ?lling heads 2-2’ appear
around the gasket and interfere with the proper ?lling of
in the aforesaid Geiger Patent 2,347,046.
The alternate use of the ?lling heads 2-2’ permits a 30 the bulb 4. In such olf-center position, the light beam
striking the bulb surface does not refract the light to the
?lled bulb 4 to be removed from one head and be re
same extent as a properly positioned bulb and therefore
placed with another empty bulb 4, while another bulb
actuates the photocell. The same is true when the bulb
in the other head is receiving a charge of shreds. As de—
is cracked or broken so that part is missing. In all such
scribed in the Geiger patent, the bulbs 4 can be inserted
instances, the photocell is actuated to prevent operation
in and removed manually from the ?lling heads 2-2’ or,
of the solenoid valves 11-11’ so that a charge of ?lamen
as described in the aforesaid F. V. Kolda and Sindy patent
tary material is not delivered to the ?lling head.
application Serial No. 52,209, the bulbs can be loaded
Further to prevent any accumulation of shred charges
automatically by means of the suction cups 3-3’.
within the apparatus which could interfere with proper
Brie?y, this automatic apparatus includes a spindle
28' for supporting cup 3' to move it vertically to carry 40 loading, the unused charge of shreds formed opposite
the cutter 1, when the shred transport tubes 5-5' are
the bulb 4 in and out of the ?lling head 2. This vertical
made inactive, is drawn away from any interferring posi
motion results from a corresponding motion of a sup
tion by an auxiliary ‘transport or collector system which
porting carriage 29’ and a yoke 30' and is initiated by
includes the suction tube 10. The aforementioned switch
means (not shown) connected to the main driving means
of the apparatus which vertically moves the support col 45 ing operations performed by the ampli?er relays 36 and
36’ in activating and deactivating the transport tubes
umns 31' and 32’ for the yoke 30’. The sideward motion
5-5’ also activates the auxiliary transport system by
of the cup 3’, required to complete the automatic ex
energizing vacuum valve 12. To accomplish this the alter
change of the bulbs 4 is likewise generated in the car
nate switching positions of the ampli?er relays 36-36’
riage 29’ and is transferred thereto from the main driving
means through a rotatable shaft 33’ extending upwardly 50 connect the line leads 37-37’ to the leads 43-43’ exd
tending to the vacuum valve 12 of the collector system.
through the support column 32' and a gear 34’ on the
Accordingly, a source of vacuum is caused to draw air
upper end of the shaft 33’ which meshes with a rack 35’
through the system comprised of the suction tube 10, a
on the carriage 29’. Rotation of the gear moves the rack
collecting container 45 and a pipe line 46. Lead 44
35' and carriage 29’ laterally to bring the lamp bulbs
provides a direct connection from the valve 12 to the
into and out of alignment with the ?lling head 2’.
line and completes the circuit connections thereto.
Regardless of whether the bulbs 4 are placed in the
The shreds that are pulled into the tube 10 and the
?lling heads 2-2’ manually or automatically, certain
collecting container 45 are prevented from passing further
occasions arise when a bulb 4 is partially broken or com
into the system and possibly interferring with the opera
pletely missing from one or the other of the ?lling heads
2-2’. When so positioned in the cycle of operation, 60 tion of the valve 12 by a screen 47 placed over the mouth
of the suction pipe line 46. Still other means are provided
switch 7 is operated to cause energization of the solenoid
to prevent the shreds from entering the vacuum valves
valve 11 or 11’ to connect its corresponding head 2 or 2'
11-11’ and 12 of the transport tubes 5-5' and suction
to the vacuum supply. At that particular moment, the
tube 10, respectively, in the actual embodiment of the
area normally occupied by the bulb 4 is scanned by a
light beam directed over the ?lling head 2 or 2’ from a 65 apparatus appearing in FIG. 1, this means being in the
form of traps 48 in the ‘lines through which the air is
light source 8 or 8’ projected toward a photocell 9 or
drawn to the valves.
9’. Should the beam not be properly refracted away from
The ?ash bulb ?lling apparatus is one in which auto
the photocell 9-9’, a broken or missing bulb 4 is indicated
matic control means is provided to prevent improper ?lling
‘and the electrical circuit to either the solenoid valve 11
‘or 11' is interrupted. The photocells 9 and 9’ inactivate 70 of defective bulbs and in which means is provided to
collect charges of shredded material in those instances
the solenoid valves 11 and 11’, respectively, by causing
in which a bulb is not in proper position to be ?lled.
the ampli?er relays 36 and 36’, respectively, to break
While the present invention has been described with
the circuit between the line lead 37 or 37 ’ and the solenoid
reference to particular embodiments thereof, it will be
leads 38 or 38’ and in so doing prevent energization of
the solenoid valves. This means that vacuum is not ap 75 understood that numerous modi?cations may be made by
each case, to allow a source of vacuum to withdraw the
air from the hollow interior of the bulb 4 and the ?lling
3,098,835
6
5
those skilled in the art without actually departing from
the invention. Therefore, I aim in the appended claims
to cover all such equivalent variations as come within the
true spirit and scope of the foregoing disclosure.
What I claim as new and desire to secure by Letters
Patent of the United States is:
prevent operation of the corresponding valves and start
operation of said auxiliary transport system.
4. Apparatus for ?lling ?ash lamp bulbs with charges
of shredded light-producing combustible material com
prising, in combination, a cutting mechanism for produc
ing shreds from a strip of the material, a plurality of ?ll
ing heads each adapted to receive a lamp bulb, a collect
1. Apparatus for ?lling a ?ash lamp bulb with a charge
of shredded light-producing material comprising, in com
bination, cutting mechanism for producing a charge of
shredded material, a ?lling head receiving the open neck of 10
ing container, transport tubes extending from the heads
and said collecting container to points adjacent the cutting
mechanism to receive charges of shredded material, ?rst
a lamp bulb to mount the bulb on said head, means
means including ?rst valves to connect a vacuum source to
including a vacuum system for transporting the charge
from said cutting mechanism to said ?lling head for
insertion into the interior of the bulb, an auxiliary trans
each head to draw a charge of shredded material from
the cutting mechanism through the transport tubes to the
?lling heads upon opening of said ?rst valves, a second
port system for removing the charge from said cutting
means including a second valve to connect a vacuum
mechanism, and means responsive to mounting of a
detective bulb on said ?lling head to stop operation of
said ?rst transporting means and start operation or said
source to the collecting container to draw a charge of
auxiliary transport system.
2. Apparatus for ?lling a ?ash lamp bulb with a charge
of shredded light-producing material comprising, in com
bination, cutting mechanism for producing a charge of
shredded material, a ?lling head receiving the open neck
shredded material from the cutting mechanism through
the transport tube to the collecting container, a photo
cell and energizing light source adjacent each ?lling head
so arranged as to scan the area occupied by a bulb
mounted on the head, and means responsive to the out
put of said photocells to prevent opening of the ?rst valves
and simultaneously open ‘the second valve.
5. Apparatus for ?lling ?ash lamp bulbs with charges
of a lamp bulb to mount the bulb on said head, trans
porting means including a vacuum system for transport 25 of shredded light-producing combustible material com
prising, in combination, a cutting mechanism for produc
ing the charge from said cutting mechanism to said ?lling
ing shreds continuously from a strip of the material, a
head for insertion into the interior of the bulb, an aux
plurality of ?lling heads each adapted to receive a lamp
iliary transport system for removing the charge from said
bulb, a collecting chamber, transport tubes extending from
cutting mechanism, and means being operative to stop
operation of said ?rst transporting means and start opera 30 the heads and said collecting chamber to points adjacent
the cutting mechanism, ?rst means including ?rst valves to
tion of said auxiliary transport system, said last mentioned
means including a light source and photocell arranged so
that a light bulb on said ?lling head retracts light rays
from the light source away from the photocell.
3. Apparatus for ?lling flash lamp bulbs with charges
connect a vacuum source to each head to draw a charge
of shredded material from the cutting mechanism through
the rtransport tubes to the ?lling heads upon opening of
said ?rst valves, means operated by the cutting mechanism
prising, in combination, a cutting mechanism for produc
to open each ‘of said ?rst valves in sequence to apply
vacuum to one ?lling head after the other, a second means
ing shreds continuously from a strip of the material, a
plurality of ?lling heads each adapted to receive the open
the collecting chamber, photocells adjacent each ?lling
of shredded light-producing combustible material com—
neck of a lamp bulb to mount the bulb on said head, a
transport tube extending from each head to a point adja
cent the cutting mechanism to receive a charge of shredded
material, means including a valve for applying vacuum
to each head so that a charge of shredded material may
be drawn from said cutting mechanism ‘and transported
through the corresponding tube to the ?lling head for in
sertion into a mounted lamp bulb, an auxiliary transport
system for removing the charge from said cutting mecha
nism, means operated by the cutting mechanism to open
each of said valves in sequence to apply vacuum to one 50
?lling head after the other, a photocell and energizing
light source adjacent each ?lling head so arranged as to
scan the area occupied by a bulb mounted on the head,
and means responsive to the outputs of said photocells to
including a second valve to connect a vacuum source to
head, cooperating light sources mounted to project light
rays across the spaces normally occupied by light bulbs
mounted on the heads to control energization of said
photocells, and means responsive to the outputs of said
photocells to prevent opening of the ?rst valves and simul
taneously open the second valve to draw a charge of
shredded material from the cutting mechanism through
the transport tube to the collecting chamber.
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,958,243
2,259,777
2,347,046
2,934,869
lllingworth ___________ __ May 8,
Politsch et a1 __________ __ Oct. 21,
Geiger _______________ __ Apr. 18,
Engleson et al __________ __ May 3,
1934
1941
1944
1960
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