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Патент USA US2114844

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April 19, 1938.
2,114,844
P. w. KRAUSE
METHOD AND APPARATUS FOR MOUNTING FILAMENTS
Filed June 1, 1936
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Patented Apr. 19, 1938
2,114,844 }
UNITED STATES
PATENT OFFICE
2,114,844v
METHOD AND APPARATUS FOR MOUNTING
FILAMENTS
Paul W. Krauae, Youngstown, Ohio, assignor to
General Electric Company, a corporation of
New York
Application June 1, 1936, Serial No. 82,759,
izcl'aims. (Cl. 176-4)
My invention relates to the manufacture of
incandescent lamps and similar devices which
comprise ?laments, and more particularly to
methods and apparatus for mounting concen
5 trated ?laments'which are required to be de?
nitely positioned. One application of my inven
tion is to the mounting of ?laments for projection
and automobile lamps. In projection lamps, or
the like, which cooperate with re?ectors and
10 lenses in producing a well-de?ned light beam, it
is necessary that the ?lament be positioned very
accurately with reference thereto in order to pro
duce the desired beam and to eliminate stray or
uncontrolled light.
15
"
Irregularities in lamp construction which cause
the ?lament to be located out of position are
usually compensated for by separate means at
tached either to the lamp or to the re?ector, and
_ it is the principal object of my invention to pro
vide a method and apparatus for accurately
mounting the ?lament so that the need for these
means is lessened. Another object of my inven
tion is to reduce the di?iculty with which the
?lament is mounted due to its small size and
‘frailty. Another object of my invention is to
increase the economy and speed with which the
?lament is mounted.
.According to my invention, I provide a plane
surface on which a plurality of ?laments are
piled and an instrument for manually shifting
said ?laments about in order to separate one from
the rest. A form is provided on the plane surface
adjacent means for holding the stem and leading
in wires and the ?lament is pushed, through use
ofthe instrument, against the form to locate it
properly with respect to said leading-in wires.
Electrodes are also provided to weld the ?lament
to the leading-in wires while both are retained
in this position. I prefer to use an instrument
and a form of such shape as to con?ne all of the
?lament excepting its ends ina restricted space
so that there is no possibility of the ?lament's
being mounted out of position. For instance,
with a straight ?lament coil the plane surface.
provides the bottom side of the con?ning space;
a portion of said embodiment; Fig. 3 is a side ele
vation of the portion of the embodiment shown
in Fig. 2 with the lamp stem broken away along
line 3-4; Fig. 4 is a plan view of a similar por
tion of another embodiment of my invention, and 5
Fig. 5 is a side elevation thereof with the lamp
stem broken away along line 6-—6 of Fig. 4.
In the embodiment of my invention shown in
Figs. 1, 2, and 3, a quantity of lamp ?laments iii
are placed on the plane surface of the tray Ii and 10
the lamp stems l2 on which the ?laments II) are
to be mounted are placed on the holder I3 with
.the ends of the leading-in wires i4,- i5, and I6
resting on the electrode ii. The ?laments ill in
this particular instance, each comprises a quite 15
tightly wound coil having straight ends extend
ing laterally outward from the coil and from
the top and bottom-most portions thereof. The
stems l2 in this instance are each of tipless con
struction with an exhaust tube l8 extending 20
therefrom which is rested in the V grooves in
the holder i3 and with ‘leading-in wires l4, l5,
and i6 having laterally bent and aligned ends
which are rested on the end of electrode ii.
The
tray Ii, the holder “and the electrode II are
mounted on the frame IQ of the device, the elec
trode i ‘I being located in a groove in said frame
l9 as shown in Fig. 2 and being clamped into
position by the blocks 20, 2| and bolts 22, 23.
A large magnifying glass may also be mounted 30 -
adjustably to the frame I! to enable the operator
to see more clearly and to function ‘more effec
tively.
The operator of this device ?rst places with the
left hand the stem l2 into the position already
indicated, with the ends of the leading-in wires
l4, l5, and I6 spaced from the edge of the elec
trode linearest the tray H, as shown in Fig. 2.
The operator with the right hand takes the in
strument or tool 24 and separates one ?lament
II from the rest on the tray ii. The separated
?lament III is then caught in the groove or open
ing 25 in the under near side of the tool 24 and
with the bent end of said tool 24 resting on the
tray ii, is pushed along the top plane surface
thereof and onto the plane surface of the plate 26.
thereof; and the form the other end and the ‘ The opening 25 in the tool 24 is substantially the
same size as the ?lament coil and is so con
other side thereof.
the instrument, the top, one end, and one side
' ' Other objects and advantages of my invention
will appear from the detailed description which
follows of species thereof and from the accom
panying drawing.
In the drawing Fig. 1 i. a perspective view of a
device constituting one embodiment of my inven
tion: Fig. 2 is a plan view on an enlarged scale of
structedas to prevent injury to said ?lament.
To bring the ?lament l0 into the mounting posi
tion it is shifted on the plate 26 until the straight
ends straddle the stop plate 21 and take position
above and below the bent end portions of leading
in wires i4 and i5 respectively, (note: in Fig. i.
the stem I" is turned 180° from the position re
2.
> 2,114,844
' ferred to, but for this portion of the description
leading-in wires I6 and | 5 may be referred to
equally well) ,. and the side and end of the coiled
the lower face of the end thereof. The ?lament
59 is pushed and slid along the plane surface of
the tray H and plate or block i‘linto engage
ment with the V-shaped projection or form 59
of the block 51 which locates it with reference
to the leading-in wires 52 and 53 as shown. The:
portion lies against the stop plate 21 and stop
?nger 28>respectively. The stop plate 21 and the
. stopi?nger 28 constitute a form for holding the
?lament in position. The stem I2 may have to - V notch 59 in the tool allows the operator to see
be adjusted slightlyto help the straight ends of whether the ?lament. 59 is properly located in
the ?lament I9 fall into position without injury. the V groove 56 of the tool 55.
10 The angularity of the end of the electrode [1 tilts
The ends of the ?lament 59,take positions
the stem I2 so that the leading-in wires l4 and above and below the leading-in wires 52 and 53
I5 engage the-?lament ends at their respective respectively since one e?d extends from the top
elevations since the thickness of said leading-in and the other end extends from the bottom of
wires is less than the difference in elevation be
the ?lament coil. The ?lament 59 is now welded
15 tween the ?lament‘ ends.
,
to the leading-in wires 52 and 53 by ‘electrodes 15
With the stem |2 held by the left hand and the (not shown) similar to those in Fig. 1 which are
holder l3 and the ?lament l9 held in position by brought down into engagement therewith. Dur
the .tool 24 in the right hand, the electrodes 29 and ing these operations a leading-in wire 69 (Fig.
39 are caused to be moved down through move
5) which is located below leading-in wire 53 and
20 ment of a foot pedal (not shown) until the ?la
the support wire 6| which is located below lead 20
ment l9 and the leading-in wires l4 and I5 are ing-in wire 52 and is attached'thereto, lie in the
engaged and welded together. The electrodes 29 . aperture 62in electrode 54.
and 39 are attachedto the levers3| and 32 re— '
A second ?lament 59 is-attached to the lead
spectively by the bolt 33; and block 34 and bolt ing-in ‘and support wires 69 and 6| in a similar
25 35 respectively, and are operated about the shaft. manner after the stem 5| is turned over. The
36 by arm 31. The arm 31 engages the levers 3|
stem 5| is removed, turned 180° and replaced
and 32 through springs 38 and 39 respectively with the ends of the leading-in and support wires
and stop pin 49 and is fastened to shaft 36 which 69 and 6| placed in the desired position on the
is operated by the foot pedal through mechanism electrode 54 and the ?rst ?lament 59 and the
(not shown), rod 4| and arm 42. The electrodes leading-in wires 52 and 53 located in the aper 30
I1, 29, and 39are so arranged that electrode 29 ~ ture 62 in said electrode 54. The support wire
engages and welds the lamp parts together ?rst 6| functions as another leading-in wire and is
before the electrode 39 engages and welds said
lamp parts.
The excess movement of arm 31 '
35 after electrode 29 engages the lamp parts is taken
up by spring 38 and by spring 39 after the elec
trode 39 engagessaid lamp parts. The electrodes
I1, 29, and 39 are connected through the ?exible
cables 43, 44, and 45 to the welding circuit (not
40 shown)‘. which controls the timing and amount
of current used.
‘
’
'
.
A second ?lament |9.,is attached'to the leading
' in wires I5 and ‘I6 of the stem l2 with the same
.
What I claim as new and desire to secure by
Letters Patent of the United States is:
1. The method of mounting a ?lament on a
stem having a pair of leading-in wires extend
ing therefrom which comprises supporting said
stem in a de?nite relation to a plane surface.
sliding a ?lament on said plane surface to a 40
de?nite position with reference to said stem and
said leading-in wiresand attaching said ?la
ment to the-leading-in wires in said position. '
2. The method of mounting a ?lament on a
set up. The" second ?lament is attached after
the stem I2 is taken out and replaced after be
ing turned 180° on its longitudinal axis and takes
stem having a pair of leading-in wires extending
therefrom which comprises supporting said stem
a position on the opposite side of the axis. corre
in a de?nite relation to a plane surface, catching
sponding to-that vof the ?rst ?lament.- In this
position of the stem‘ [2 the ?rst ?lament l9 lies
50 in the groove 46 in the plate 26 and-the stem I2
is adjusted so that the coiled portion of the ?la
ment-‘I9 engages the stop ?nger 28 and the bot
tom of the ‘groove 46. The ?rst ?lament l9 also
rests on the block 41 in said groove which causes
55
fastened to leading-in wire 52. ' '
the ?laments |9-‘-|9_ 0r leading-in wires |4, I5,
a ?lament in an opening in the bottom of a tool
rested on said plane surface, sliding said ?lament
on said plane surface to a de?nite position withv
reference to said stem and said leading-in wires
by manipulation of said tool and attaching said
?lament to the leading-in wires in said position.
3. The method of mounting a ?lament on a
and I6 to beibent' if they are not properly posi
stem having a pair of leading-in wires extending
therefrom which comprises supporting said stem
tioned as the second ?lament is welded on.
in a de?nite relation to a plane surface and a
The
operations in attaching the second ?lament to
the leadingrin wires l5 and I6 are exactly the
60 same as‘ those used in attaching the ?rst ?la~
form 'thereon, sliding a ?lament on said plane
surface and into engagement with said form so
ment and are not described further.
that it is positioned with reference to saidstem 60
and said leading-in wires and attaching said
The embodiment of my device shown in Figs.
4 and 5 is provided for mounting V-shaped coiled
?lament tothe leading-in wires in said position.
filaments 59 and in the instance shown is em
4. The method of mounting a pair of ?laments
on a stem having a plurality of leading-in wires
65 ployed to mount tw'o V-shaped ?laments, one
extending therefrom which comprises supporting
above the other, on the stem 5| (only partially
said stem with a pair of said leading-in wires in
a de?nite relation to a plane surface, sliding a
?lament on said plane surface to a de?nite posi
tionwith reference to said pair of leading-in
shown). The device differs from the other de
vice only in the parts which engage the ?laments
59 and which are shown in Figs. 4 and 5. The
70 ?laments 59 lie on the-tray II as before but the
stem 5| rests in the holder with’ the leading-in
wires'52 and 53 resting on the electrode 54 in
the position shown. A ?lament 59 is selected
from those on the tray II and, by manipulation
of the tool 65. is caught in the'v groove 56 in
65
wires, attaching said ?lament to said leading-in "
wires in said position, adjusting said stem to
bring a second pair of leading-in wires into a
de?nite position with reference to said plane
surface, sliding a second ?lament on said plane
surface to a de?nite position with reference to
3
2,114,844
edge of said tray and in a de?nite relation to said
said second pair of leading-in’ wires and in at
holder, a tool for separating one ?lament from
taching said second ?lament to said second pair ' the remainder on said tray and for sliding it
of leading-in wires in said position;
thereon into vengagement with the form, means
5. An apparatus for mounting ?laments on for attaching said ?lament to the leading-in wires
stems having leading-in wires extending there- -
vi.'ro:_>m comprising a holder for a stem, 9, tray
mounted adjacent said holder for supporting a
plurality of ?laments, a form mounted at the
edge of said tray and in a de?nite relation ‘to .
said holder, a tool for separating one ?lament
in this position and a groove in said tray for
holding and positioningthe ?lament when the
stem is adjusted to another position in the holder
in which a second ?lament is attached to lead
ing-in wires extending therefrom.
,
'
from the remainder on said tratand for sliding
it thereon into engagement witiithe form and
means for attaching said ?lament to the leading
having leadingein wires extending therefrom
comprising a substantially ?at horizontally dis
posed tray for supporting‘ a plurality ,of coiled
in wires in this position.
?laments having outwardly extendinggend'por
‘
'
6. An ‘apparatus for mounting ?laments on
I stems having leading-in wires extending there
from comprising a holder for a stem, a tray
mounted adjacent said holder for supporting a
plurality of ?laments, a tool ‘having a portion
adapted to rest on the tray and having an open
ing in said portionadapted to hold a ?lament,
for separating one ?lament on the tray from the
remainder and for sliding said ?lament into a
edge of said tray for holding a stem with por
tions of a pair of its leading-in wires in de?nite
relation to said form, means for engaging one of
the ?laments on said tray and sliding it thereon
into engagement with said form, and means for
wires, and means for attaching said ?lament to I
having leading-in wires extending therefrom
comprising a substantially ?at horizontally dis
7. An- apparatus for mounting ?laments on
‘stems having leading-in wires extending there
from comprising a holder for a stem, a tray
mounted adjacent said holder for supporting a
20.
attaching said ?lament ends to said portions of
de?nite position with reference to ‘the leading-in
.
15
tion's, a form mounted adjacent to' the edge of
said tray, a stemv holder mounted adjacent to said
said leading-in wires.
the leading-in wires.
10
10. Apparatus for mounting ?laments on stems
>
v
11. Apparatus for mounting ?laments on stems
posed tray for supporting a plurality of coiled
?laments having outwardly extending end por
tions, a form mounted adjacent to the edge of 80
said tray, a stem holder mounted adjacent to said
plurality of ?laments, a form
_ mounted at the I edge of said tray for holding a stem with por
edge of said tray and in a de?nite relation to said tions of a pair of its leading-in wires in de?nite
holder, a tool having a portion adapted to rest relation to said form, a tool having-a groove
on the tray and having an opening'in said portion therein of the same shape as the mid-portions of '
adapted to hold a ?lament,'.for separating one said ?laments for engaging one of the ?laments _
?lament on the tray from the remainder and for on said tray and sliding it thereon into engage- '
sliding said ?lament against the form, and means ment with said form, and means for attaching
for attaching said ?lament to the leading-in wires said ?lamentends to said portions of said lead’
in this position.
8. .An apparatus for mounting ?laments on
stems having leading-in wires extending there
. from comprising a holder.i’or a stem, a tray
ing-in wires.
'
12. Apparatus for mounting’?laments on stems
having leading-in wires extending therefrom
comprising a substantially ?at horizontalljrdis
mounted adjacent said holder for supporting -.a posed tray for supporting a plurality of coiled
plurality of ?laments, an electrode mounted ad
?laments having outwardly extending end por 45
45 jacent the‘ edge of- said tray and having the top ' tions, an electrode mounted adjacent to the edge
surface thereof inclined and partially above and of said tray, a form mounted adjacent to the edge
below the surface of- thetray for supporting the of said tray and said electrode, a stem holder
ends of leading-in wires extending from the stem, mounted adjacent to said edge of said tray for
a tool for separating one ?lament from the re
holding a stem with portions of a pair of its leach“ 50
mainder on said tray and for sliding it thereon to ing-in wires on said electrode in de?nite relation
the edge adjacent the electrode and in engage
to said form,'means for engaging one of the ?la
ment with said leading-in wires, an electrode merits on said tray and sliding it thereon into
mounted above the ?rst and means for moving engagement with'said form, an electrode located
said electrode ‘down onto the ?lament and lead
above said ?rst-mentioned electrode, and means 55
for moving said second-mentioned electrode to
55 ing-in wires to weld them together.
9. An apparatus for mounting ?laments on‘ ward said ?rst-mentioned electrode to weld the
stems having leading-in wires extending there
said ends of said ?lament and the said portions
from comprising a holder for a stem, a tray - of the leading-in wires together.
mounted adjacent said holder for supporting a
PAUL w. KRAUSE. 60
plurality oi.’ ?laments, a form mounted at the
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