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Jan. 20, 1948.~ Y
F. J. MALLOY
2,434,664
SEALING-IN MACHINE
Filed NOV. 9, 1942
2 Sheets-Sheet 2
Figs. 3. 371567 [30 - Z6
lnven'bor:
Frank J. Mattog, Dec’oL,
/Z3
//9
.
I
by Cerlrherine A. MaLLog ,
A24
50
His Execu’crix,
by
. WM
His Arir=torneg
-
Patented Jan. 20, 1948
2,434,664
UNITED STATES PATENT OFFICE
2,434,664
SEALING-IN MACHINE
Frank J. Malloy, deceased, late of University
Heights, Ohio, by Catherine A. Malloy, execu
trix, University Heights, Ohio, assignor to Gen
eral Electric Company, a corporation of New
York
Application November 9, 1942, Serial No. 465,008
5 Claims. (Cl. 49-2)
2
The present invention relates to sealing ap
paratus for electric lamps and the like, and is
section through a mount and a bulb end in sealing
relation thereto and midway in the course of the
particularly useful for fusing the flared vitreous
stem tube of a mount for a ?uorescent lamp into
the open end of the tubular vitreous bulb thereof.
One object of the invention is to provide ap
paratus for sealing the ?ared glass stem of elec~
tric lamps and similar devices into the open
mouth of the bulb of said devices in a ready and
satisfactory manner. The apparatus provides for 10
sealing operation.
_
The apparatus shown in the drawing comprises
sixteen heads II located about the periphery of
the turret l2 which heads H carry the mount l3
and bulb M to each of a corresponding number
of work stations, A to Q, during the course of
rotation of the turret l2. The mount I3 and bulb
I 4 are placed in the head H by an operator lo—
cated adjacent stations A and B. The mount
the sealing of the glass stem, which supports the
leading-in wires and other essential parts of the
illustrated in the drawing is of the type shown
device, to the glass bulb both economically and
in application Serial No. 368,021, John Flaws,
at high speed. The apparatus is particularly
adaptable to seal together the usual commercial 15 ?led November 30, 1940, now Patent N 0. 2,312,245,
and assigned to the assignee of this application.
stems and bulbs which vary slightly in form.
The turret I2 is indexed in a counterclockwise
Another object of the invention is to provide
direction and, usually, the operator places the
apparatus for sealing a stem into’ a bulb wherein
mount it on the upper end of the spindle l5 while
a minimum of each of these parts is fused and
reshaped by said operation. The sealing of 20 the head I] is located at station A, and inserts
the bulb M in the holder [6 thereof at station B.
fluorescent lamps, for instance, must be restricted
The
mount I3 is placed in the proper location in
to a relatively narrow end section at each end of
the head i I by inserting the exhaust tube I‘! and
the bulb as these sections must be enclosed within
leading-in wires [8 and [9 into the axial opening
small flat bases.
or bore in the pin or cap 20 on the upper end of
Still another object of the invention is to pro 25 the
spindle l5 and then pushing said mount l3
vide apparatus for sealing a stem into the open
down until the ?ared stem tube 2| thereof rests
mouth of a bulb, which apparatus facilitates the
on the head of the pin 20. At such times the end
shaping of the sealed portion and, in the case of
of exhaust tube I1 is con?ned within the re
a double ended bulb, the control of the overall
stricted portion 20’ of the opening in the lower
length thereof. The sealing operation provides 30 portion
of the pin 20 and the ?ared stern tube 2|
an outwardly extending ridge or bead at the end
rests on the conical top or head of said pin 20.
of the bulb which permits the more satisfactory
The bulb I4 is inserted by, ?rst, pressing it into
fastening of the base thereto, whereas the con
engagement with the V-grooves 22' in jaw 22
trol of bulb length permits the lamps to be used
(Figs. 3 and 4) and a corresponding V-groove in
in standard size lighting ?xtures and arranged in 35 the
guide 23 (Fig. 2) of the holder 16, and then
end~to~end relation satisfactorily.
sliding it down until the open lower end butts
Other objects and advantages of the invention
against the rim of the ?are portion of the stem
will appear from the following detailed descrip
tube 2| very much as shown in Fig. 9. The handle
tion of a species thereof and from the drawing.
In the drawing, Fig. 1 is a plan view, partially 40 24 is then moved to the right to the position
shown in Figs. 3 and 4 so that the movable jaw
broken away, of a sealing machine embodying the
25 is caused to engage and grip said bulb 14. The
invention; Fig. 2 is a vertical section through a
guide 23 and jaws 22 and 25 are mounted at
head of said machine located at the unloading
spaced points on the rod 26 which extends up
station; Figs. 3 and 4 are plan and perspective
views respectively of the bulb holding jaws of the 45 wardly from the ?anged portion 21 of the spindle
I5, and prevent the bulb M from shifting out of
heads; Figs. 5 and 6 are perspective views of ap
position during the indexing movements of the
paratus for raising the mount-shaping means at
turret I2. The jaws 22 and 25 are mounted be
station H, J and L; Fig. 7 is a perspective view of
tween the upper and lower plates 28 and 29 ex
the upper end of the spindle of alternate heads
with a mount partially inserted therein; Fig. 50 tending from the bracket 30 on the rod 26 and
8 is a perspective view of a modi?ed spindle for
the heads; Fig. 9 is a perspective View of modi?ed
apparatus for actuating the seal-shaping means ;
and Fig. 10 is a vertical section through the modi
are pivotably mounted on the pins 3| and 32 re
spectively.
When the bulb i4 is introduced into the head,
the roller 33 on the pin 34 holding the handle
?gd spindle shown in Fig. 8 and a corresponding 56 24 is located against the shoulder 35 of jaw 25
and the contraction force of the spring 36 ex
2,434,664.
3
tending between pin 35 and the post 3i causes
4
Stations F, G, H, J, K, L and M are occupied
by the sealing burners 64 which in this particular
said jaw 25 to be held to its open position as
instance comprise a group of four burners direct
shown at stations A and B. At such times the
ing very sharp hard flames against the exposed
edge 38 of said jaw 25 rests against the collar 35
rim of the ?ared stem tube 2! and the immediate
of pin llil. When the jaws 22 and 25 are closed,
ly adjacent end portion of the bulb Ill. These
the roller 33 occupies the position shown in Figs.
burners 64 may use a natural gas and oxygen
3 and 4 and the contracting force of the spring
mixture of considerable heating eifect and heat
35 keeps the jaw 25 turned so that the rubber pad
the ?ared stem tube 2i to such an extent that
4! engages the bulb l4, and the extending por
its rim portion becomes soft and plastic While the
tion 132 (Fig. 3) engages the screw 53 turning the 10
H is at station H.
jaw 22 into engagement with the bulb l5. The’ ‘ head
The softening of the glass parts permits the
roller 33 and pin 34 are supported by the arm Ll-ll
succeeding operation, which takes place as the
which swings in the slot 45 in the bracket 35 and
head ll is about to index from station H, to be
which is slotted for the pint-Bl so that it may
brought about as a pusher means in the form of
move in or out as required. Should the bulb ill 15 the sleeve 55 then moves up momentarily against
vary somewhat from normal size, the engagw
the outer rimof the stem tube 2| causing it to
ment of the extending portion 52 of jaw 25 and
‘ be bent and worked up into more intimate con
the screw £33 in jaw 22 will cause both jaws 22
tact with the edge of the bulb Ill. The rim of
and 25 to close correspondingly and said bulb
the bulb M may be upset slightly by the action
l4 will always be directly on the center of the 20 of the sleeve 65 which is sufficiently powerful to
head I l.
bring these parts together should the rim of
Following stations A and B is an idle station
either the stem tube 2| or bulb Ill be incorrectly
C which can if desired be used by the operator
positioned through improper alignment of the
for loading the head I I.
parts in the head I I or should inaccuracies in the
In indexing to station D, the next in order, the 25 form of said parts exist. The sleeve 65 has an
head H ?rst passes from engagement with the
inwardly bevelled upper end 55' and is connected
track ell (located below the turret i2) which has
to the tube 66 within the hollow center of the
prevented it from turning away from the opera
spindle l5 by the bolts 5'l—5l (Fig. 2) which nor
tor and then passes into engagement with the
mally rest at'the bottom of the slots 5'!’ in the
moving chain 48 which rotates it. The track ll'l 30 spindle E5 in which they are located as shown
(Figs. 1 and 2) is a stationary member lying par
because of the downward pressure exerted by the
allel to the path of movement 0f the head ll
expansion force of the spring 58 which is located
through stations P, Q, A, B and _C and comprises
between the spindle l5 and the end of tube 65.
inner and outer rails 159 and 59 respectively which
The upward motion is imparted to the sleeve
are mounted on brackets 5| extending from the 35
by apparatus (Figs. 1 and 5) mounted on the
stationary frame (not shown) of the machine
frame 5! of the machine below station H which
and which de?ne a path along which the roller
apparatus comprises a post 69 located directly
52 of the head ll must travel. The roller 52 is
below the lower end of tube 65; a platform 75
mounted on a post extending from the lower face
holding said post 69; a vertically disposed shaft
of the ?y wheel 53 which is attached to a por 40 ‘ll supporting said platform 10; and the system
tion of the spindle I5 below theturret l2 and is
so positioned that the bulb holder i6 is held in a
position accessible to the operator. The chain
embracing link 72, arm ‘l3, shaft 14, arm 75, link
‘it and lever ‘H.
The cam 78 on the main drive
shaft 85 engages the roller 8| on the lever ll
58, on the other hand, has motion in a counter
turning it about the post 82 extending from frame
clockwise direction about the machine which 45 iii of the machine and through the various parts
causes it to pass to the sprocket 5d of the head
of the system causes the shaft ‘H to be moved
II at station D and to engage corresponding
vertically in the arms of the bracket 83 so that
sprockets of many of the other heads H, the
the platform ‘ill is raised and the end of the post
driven sprocket 55 and the idler sprockets 5E, 57
59 is caused to engage and raise the tube 56 to
50
and 58. In this particular instance, sprocket 55
a de?nite height. During the period of move
is turned by the main driving means (not shown)
ment, the shaft 14 of the actuating system turns
of the machine and cooperates with sprockets
in the arm 84 supporting it, and the bolts 61—6‘l
51 and 58 to direct the chain I28 away from the
connecting the sleeve 65 and the tube 55 slide
heads II at loading and unloading stations A, B,
vertically in the slots 67’ in the spindle 15. The
C and P, Q respectively where the head I l is held 55 arm 84 is a stationary member which is attached
by track ill. Sprocket 56 is part of means for
to a portion 83' of the bracket 83 located about a
keeping the chain as taut and is mounted on
lower portion of shaft ‘H. The sleeve 55 remains
the arm 59 which is biased by the spring 65 so
in the up position for a relatively short time in
order to cool the heated glass parts as little as
movement. An outwardly extending portion of 60 ' possible
and is normally adjusted to produce a
the frame iii of the machine supports the shaft
as to pull the chain 58 out of its normal path of
holding the driven sprocket 55, the posts holding
idler sprockets 5'! and 58 and the arm 59 sup
.030 inch upward displacement of the rim of the
stem tube 21.
In some instances it may be de
sirable to control the gripping force of the holder
porting sprocket 56.
for the bulb id (for example, by using a weaker
Station D and station E, the next in order, 65
spring 35) so as to permit the bulb ill to move
are similar work stations in that both have pairs
upward
therein when the rim of the bulb I4 is
of burners 62 and 53 directing soft ?ames against
not su?ciently plastic to be displaced the full
the exposed rim of the ?ared stem tube El and
amount of the movement of the sleeve 65.
two to three inches of the lower end of the bulb
The rim of the bulb and the stem tube 2i con
It. These burners 62 and 53 are, on occasion, 70
tinue to be heated at station J and ?nally, as the
used in combination with a third pair of burners
head ll is about to be indexed therefrom, are
at the next station F and gradually raise the
further worked and upset by a second momen
temperature of the glass parts until they can take
tary upward movement of the sleeve 65. At this
the shock of the hard sealing ?res at subsequent
station the sleeve 65 is actuated by the moves
75
stations without cracking.
5
2,484,664
merits of the post 85 which is mounted on an
extension of the platform ‘Ill; however, the post
85 is adjusted to raise the sleeve 65 .010 inch
higher than it is raised at station H so as to
assure positive contact and wetting of the rims
of the bulb I4 and stem tube 2|. This operation
also upsets the rim of the bulb I4 until it forms
an annular ridge 86 about the end of the lamp
the bulb holder I6 by swinging handle .24 to the
left and removes the lamp from the machine.
The ?uorescent lamp is now only partially
complete as a mount I3 is sealed in one end of
the bulb I4 and the other remains open to the
atmosphere. The mount that is sealed in this
open end of the bulb I4 may have the same gen
eral construction as that now attached to the
much the same as shown in Fig. 2. The mechan
bulb I4 but usually does not have an exhaust tube
ical working of the bulb I4 and stem tube 2I by 10 or has only a short sealed tube IT’ in place there
the sleeve 65 at stations H and J causes the entire
of as shown in Fig. 7 since the exhaust tube I‘!
periphery of the rim portions thereof to be either
of mount I3 is su?icient to permit the exhausting
sealed together or to be in very intimate contact
and ?lling of the lamp. If a mount having a full
with each other during the interval these parts
length exhaust tube is to be sealed in the open
are treated by the Very hard high temperature 15 end of the bulb I 4,. said bulb I4 can be turned
?res of the burners at the succeeding stations and
end for end and reinserted into the above de
prevents said ?res from developing openings be
scribed head II of the machine or into a dupli
tween the parts. This method of operation is
cate head of another sealing machine of the same
particularly desirable as the pressure of the seal
construction.
ing ?res is so great as to enlarge any opening 20 However, if the mount does not have an ex
existing between the rim of the stem tube 2I
haust tube or has only a short sealed tube H’
and the bulb I4 rather than allow it to close
in place thereof di?‘lculty may be experienced lo
by the natural flow of said parts.
cating the mount directly at the center of the
At station K and stations L and M, the next
sealing head II. It is preferred in such cases
‘in. order, the burners continue to heat the adja
that the pin or cap IIlI has an upstanding lip
cent portions of the bulb I4 and stem tube 2| so
IilZ (as shown in Fig. 7) over which the tubular
that the entire wall thickness of the seal is
portion I03 of the stem tube can be placed to
securely fused together. At station L the sleeve
locate the mount thereon. Alternate heads II
65 is again raised into contact with the fused
of the present machine are equipped with pins
parts but in this particular instance its function
Isl of this type and the mount and‘ bulb assembly
is to correct any sagging that may have taken
usually taken from the machine at station Q is
place in the seal and to upset it slightly so that
the ridge 86 is slightly enlarged. This latter ac
tion of the sleeve 65 raises it .010 inch higher than
at station J and is produced by the apparatus
shown in Figs. 1 and 6 comprising post 87, plat
form 88, shaft 89, link 90, arm 9i, shaft 92, arm
93, link '94, lever 95, roller 96 and cam 9?. The
rotation of the main drive shaft 80 on Which
the cam 91 is mounted causes the movement of
the lever 95 to turn on the post 82 and indirectly
the vertical actuation of the post 81 and platform
allowed to pass on to station A where it is re
moved by‘ the loading operator and reinserted in
the head II at station B.‘ In this instance the
two operators co-operate in servicing the ma~
chine; the operator opposite station Q inserting
mounts ?rst with long and then short exhaust
tubes in alternate heads II appearing at station
A and removing the completed lamp at station
Q; and the operator opposite stations A and B
inserting open ended bulbs I4 in the heads hold
ing long exhaust tubes at station E, removing the
88. The shaft 89 moves in upper and lower por
bulbs having a mount sealed over one end from
tions of the bracket 98 which is mounted on the
the
heads at station A and, after turning them
45
frame SI and which holds the arm 99 supporting
end for end, reinserting them at station B. In
the shaft 92. The lamp now appears as shown
such an arrangement, alternate heads II are
in Fig. 2 having a mount I3 sealed in one end
carrying the bulb I4 through the operations
which seal the mount over one end thereof
Station N is occupied by a pair of burners I!!!)
directing soft ?ames against the seal and the 50 whereas the. heads in between are carrying a bulb
I4 already closed at the upper end through oper
adjacent part of the bulb I4 as is station 0 al
ations which seal a mount over the remaining
though the burners at this latter station are not
open end.
shown. These burners have an annealing effect
The sealing heads II may be modi?ed in other
on the seal and adjacent parts of the lamp‘ and
reduce the rate of cooling to such an extent that 55 ways. As. shown in Figs. 8 and 10, they may have
a heat insulating collar I05 on the upper end of
the lamp can, after leaving these stations, be
the spindle I5 and a differently formed mount
allowed to cool in open air without incurring
support pin Hi6 and pusher means or sleeve I 01.‘
detrimental strains.
The collar I051 is made of asbestos and serves to
The indexing movement advancing the head I I
beyond station 0 carries the sprocket 54 away 60 reduce the conduction of heat from the mount
support pin I06 so that it and the central portion.
from the chain 48 which has caused it to rotate
of
the stem tube 2| will be raised to a high tem
in the preceding stations occupied by the heating
perature during the sealing operation. In this
?res and advances the head II to a point where
way the development of detrimental strains in
roller 52 enters between the inner and outer rails 65 the unfused portion of the stem tube 2| is reduced.»
49 and 50 of the track 41 so that the head I I
The longitudinal-1y extending holes I08 in the
stops rotating and the bulb holder IE faces the
laterally extending head I06’ of the mount piri
periphery of the machine.
_
I06 permit the heated gases passing under said
Station P is an idle station in which the lamp
head I06’ to engage and heat the central portion
is allowed to cool to a point where it can be han 70 of the overlying ?ange of the stem tube 2I caus
dled without injury.
ing a more gradual. temperature gradient therein‘.
Station Q, the last in the series completing one
The: sleeve III'I in this instance has greater length
revolution of the machine, is the unloading sta
than in the prior instance and presents the work:
tion and it is while the head II is located here
surface I01’ in position to engage the rim of the
that an operator opens the jaws 22 and 25' of
stem tube 2|. The work surface is serrated to
of the bulb I4.
tare-4,664
a.
.
,
8
The modi?cation of the machine disclosed in
Fig.
with 8the
canapparatus
operate satisfactorily
already described,
in combination
but the
modi?ed sleeve actuating means shown in Fig. 9
permits greater ?exibility of operation which is
head I I from stations J to K and from K to L and
are brought about by raised portions I25 and I26
of the track H2 which cause the rim of the stem
tube 2| to be worked up .010 and then .020 inch
vhigher than the maximum permitted at station
H. These operations correspond to those taking
place at stations J and L in the apparatus shown
required to receive the full bene?ts of said modi
?cation and permits a slight increase in the heat
in Fig. 1 and work the rims of the stem tube 2|
and the bulb Iii tightly together so that a very
ing period of the machine.
good seal of the desired form results. Slightly
higher rates of operation are also permissible with
allow the sealing ?res to pass under the rim of
the stem tube 2|.
This modi?ed sleeve ‘
actuating means comprises the track “2 which
the use of the modi?ed mechanism in Fig. 9 as the
above movements of the sleeve 65‘ (or sleeve I01)
occur during the indexing movements of the head
and do not disturb the application of the heat
ing ?res to the stem tube 2| and bulb l4.
is mounted below the turret IE on the frame of
the machine in a position to function as a support
for the tube 56 for its entire path of travel. The
indexing motion of the turret |2 causes the tube
653 to slide along the track H2 which as applied
to the modi?cations shown in Fig. 8 has a con
stant level from station A through station G as
indicated and which drops 31; inch between sta
tions G and H to lower the sleeve Hi1.
Obviously still other adjustments of the sleeve
65 (or sleeve it?) can be provided at any point
along the path of movement of the head H by
providing a raised portion in the track H2, but
This ver- ‘
the preferred method of operation consists in al
lowing the sleeve 65 (or sleeve lil'l) to remain at
the lowermost position until the lamp is removed
and the head | | passes station Q. Between sta
tical actuation of the sleeve Iii‘! separates it from
the rim portion of the mount It as said rim por
tion is held by the bulb it because it is partially
sealed to it at this time and allows the sealing
?res to pass under the rim of the stem tube 2| " ‘l tions Q and A a rise i2? in the track H2 carries
"25
and up through holes [33 in the head I65’ of the
mount pin see to heat said stem tube 2| more
completely. Should the above actuating means
be used in combination with the sealing head ll
shown in Fig. 2, the track I I2 will not be provided f
with the drop between stations G and H since
the sleeve 65 is separated from the stem tube 2|
at this time and su?icient space is provided to
allow the sealing ?res to reach the outer rim por
What is claimed as new and desired to secure
by Letters Patent of the United States is:
l. A seali
in
bination of a ro
into engagement with the end of tube 66. The
pin | I3 is mounted on a~lever | M pivoted on the
pin H55 held by the bracket | it‘: and is actuated
by the downward pull of the weight I ll when the
bolt HS and the push rod H9 are lowered from
engagement with the end of said lever H4. The
operations of the push rod H3 is, in turn, con
achine comprising the com
le turret, a head mounted at
the periphery of said turret and carried thereby
to a plurality of stations, said head comprising a
tion of the stem tube‘ 2|.
At station H of the modi?cation shown in Fig. 9,
the tube 66 is located over an opening in the track
H2 and the upward movement of the sleeve 65
(or sleeve it?) is produced by a corresponding
movement of a pin l i3 through said opening and
the sleeve as (or sleeve 56'!) to the upper position
in which it is located when the mount l3 and bulb
Hi are loaded in the head i |.
vertical spindle carrying a support for the flanged
stem of a mount, a holder for a glass bulb above
and in register with the mount support, an upset
ting sleeve surrounding the upper end of said
,_ spindle and mounted for vertical movement with
to
respect to said mount support, means for fusing
said stern and bulb together, and actuating cam
mechanisms at a plurality of stations arranged
to raise said upsetting sleeve predetermined suc
cessive amounts into abutting engagement with
the fused joint between said stem and bulb to
compress and upset said joint, at least the cam
mechanism at one station being arranged to raise
trolled by the form of the cam |20 on the main
the upsetting sleeve substantially higher than it
drive shaft so of the machine which is engaged , -; is raised by the corresponding cam mechanism at
by the roller i2| on the lower end thereof and is 50 a preceding station.
produced by the expansion force of the spring
2. A head for a sealing-in machine comprising
|22 located between bracket I23 and the collar
a vertical hollow spindle mounted for rotation
lid on said push rod He. Brackets H6 and I23
about its axis, a mount pin in the upper end of
are stationary members fastened to the frame
3 said spindle for supporting the flanged stem of a
(not shown) of the machine. In this particular 55 mount, a holder for a glass bulb mounted above
instance the extent to which the stem tube 2|
and in register with said mount pin and sup
and the rim of the bulb M is worked depends on
ported from said spindle, an upsetting sleeve sur
the plastic or heated condition thereof as the
rounding the upper end of said spindle and mov
pressure of the sleeve 65 (or sleeve ml) is limited
able vertically therealong into and out of abut
to the effective force of the weight i ll. If greater 60 ting engagement with the rim of a stem on said
or less pressure is desired on the stem tube 2| at
mount pin, a sleeve actuating tube member
this station, the weight I ll is moved either away
from or nearer the pivot pin H5 on lever H4.
mounted within said spindle and extending down
wardly therethrough and vertically movable
The operation of the sleeve 65 (or sleeve I81) is
therein, and connector means connecting said
momentary and the tube 65 is lowered again into 65 upsetting sleeve and tube member together, said
contact with the track H2 before the head is
spindle being vertically slotted to receive said con
indexed to the next station.
nector means.
In the course of the index from station H to
3. A head for a sealing-in machine comprising
station J , the tube {55 slides to a lower level of the
a vertical hollow spindle mounted for rotation
track H2, in this instance 378 inch below the 70 about its axis, a mount pin in the upper end of
,former level thereof, so as to expose the center
said spindle for supporting the ?anged stem of a
.of the stem tube 2| more fully to the heat of the
mount, said mount pin having a laterally extend
_ ?res.
ing head portion with holes extending longitu
Further actuations of the sleeve 55 (or sleeve
dinally and vertically therethrough and adapted
|'|l"|)..occur during the indexing movements of the 75 to support the mount by engagement of the up
9
2,434,664
per surface of the pin head with the surface of
the stem ?ange so that said ?ange overlies said
10
a pin in the upper end of said spindle having a
laterally extending head portion with holes ex
holes, a holder for a glass bulb mounted above
tending longitudinally and vertically there
and in register with said mount pin and supported
through adapted to support said mount by en
from said spindle gas burners located adjacent
gagement of the upper surface of the pin head
the upper end of said spindle and adapted to di
with the surface of the stem tube ?ange so that
rect ?ames at the rim portions of the ?anged stem
said ?ange overlies said holes, burners located
and bulb to fuse said portions together and to
adjacent the upper end of said spindle and
apply heat upward through the holes in said pin
adapted to direct ?ames against the rim portion
head to heat the stem‘ ?ange and reduce the 10 of the mount and bulb to fuse said portions to
strains therein, an upsetting sleeve surrounding
gether and to apply heat upwardly through the
the upper end of said spindle and movable ver
holes in the pin head to heat the stem tube ?ange
tically therealong into and out of abutting en
and reduce the strains therein, an upsetting sleeve
gagement with the rim of a stem on said mount
member surrounding the upper end of sai.l spin
pin, a sleeve actuating tube member mounted 15 dle, and means mounting said sleeve member for
within said spindle and extending downwardly
vertical reciprocation to work the rim portion of
therethrough and vertically movable therein, and
the mount ?ange into intimate contact with the
connector means connecting said upsetting sleeve
rim of the bulb.
and tube member together, said spindle being ver
tically slotted to receive said connector means.
20
CATHERINE A. MALLOY,
4. A head for a sealing-in machine comprising
Emecutrix (of the Estate of Frank J. Malloy, De
a vertical hollow spindle mounted for rotation
ceased.
about its axis, a mount pin in the upper end of
said spindle for supporting the ?anged stem of a
REFERENCES CITED
mount, a holder for a glass bulb mounted above 25
The following refer’ences are of record in the
and in register with said mount pin and supported
?le of this patent:
from said spindle, an upsetting sleeve surrounding
UNITED STATES PATENTS
the upper end of said spindle and movable ver
tically therealong into and out of abutting en
Number
Name
Date
gagement with the rim of a stem on said mount 30
pin and having its upper edge serrated, a sleeve
actuating tube member mounted within said
spindle and extending downwardly therethrough
and vertically movable therein, and connector
means connecting said upsetting sleeve and tube
member together, said spindle being vertically
slotted to receive said connector means.
5. Apparatus for sealing the rim portion of the
?ange on the stem tube of a mount to the rim
of the open end of a bulb comprising a spindle, 40
1,475,192
1,924,532
Marshall ________ __ Nov. 27, 1923
Zimber et al _______ __ Aug. 29, 1933
2,063,235
Eisler ____________ __ Dec. 8, 1936
2,185,704
Donovan et a1. ____ -_ Jan. 2, 1940
2,203,917
Malloy __-_________ June 11, 1940
2,268,510
2,335,617
2,349,822
1,788,957
Kulberg et al _____ __ Dec. 30,
Thomas et al. ____ __ Nov. 30,
Gardner ________ __. May 30,
Phelps __________ __ Jan. 13,
1,842,184
2,162,209
Madden _________ __ Jan. 19, 1932
Trutner __________ __ June 13, 1939
1941
1943
1944
1931
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