close

Вход

Забыли?

вход по аккаунту

?

Патент USA US3084725

код для вставки
April 9, 1963
c. F. SlNDY ETAL
3,084,721 .
LAMP MOUNT FORMING MACHINE
Filed Nov. 15, 1958
2 Sheets-Sheet 1
lnvenctors:
Clarence
Sindg,
Fran‘k \l/k'otda
105
0.2,“
‘1 Their Avttggnes.
April 9, 1963
3,084, 72 1
c. F. SINDY ETAL
LAMP MOUNT FORMING ‘MACHINE
Filed Nov. 15, 1958
2 Sheets-Sheet 2
lnvenvlrors:
CLaT'ence 1:. Sind B,
"Frank V Kobda
b HThQiT‘
@zaf/Q?
,
Actcto neg.
1C@
3,984,721
Patented Apr. 9, 1963
1
2
3,084,721
The jig 4, carrying the ?lament assembly 1, 2, is then
mounted in the apparatus by inserting the looped ends 6
of the jig into slots 8 in respective brackets 9 (FIGS. 1, 3
LAMP IVIGUNT FORMING MACHINE
Clarence F. Sindy, Willoughhy, and Frank V. Kolda,
Independence, Ghio, assignors to General Electric
Company, a corporation of New York
and 4) mounted on lateral end extensions 10 of a slide 11
which is slidably mounted in ways on a bedplate ‘12 on
Filed Nov. 13, 15958, Ser. No. 773,777
4 Claims. (Cl. Mil-‘71.6)
the table or platform 13. The jig is retained in the slide
11 when the looped ends 6 thereof are engaged by the
This invention relates to electric lamp assembly appa
ratus, and more particularly to» apparatus for assembling
lamp mounts comprising a ?lament and associated wire
are pivoted on the brackets 9 and are tied together by
a rod 16. The levers 15 are urged to closed position by
springs 17 connected to rods 18‘ extending from‘ the re
spective brackets 9, and are moved to open position to
support or brace members.
It is an object of the invention to provide apparatus for
assembling with an elongated ?lament a plurality of braces
formed by twisting together a pair of wires with the ?la
ment caught therebetween at the midpoint of the wires,
the braces subsequently being bent .to an approximate U
shape. In the ?nished lamp, the legs of the U-shaped
braces bear against the walls of a tubular glass bulb or
envelope to support the ?lament in the axis of the en
velope.
Brie?y stated and in accordance with the invention, the
apparatus comprises means for supporting a linearly ex
tending ?lament between a pair of opposed and axially
aligned spindles having therein pairs of axially extending
rounded ends 14 of clamping ‘levers 15 (-FIG. 4) which
receive the brace by manipulating a handle 18 extend
ing from the lever 15 at the front of the apparatus.
When so mounted, the ?lament assembly 1, 2 extends
between a pair of opposed and axially aligned twisting
spindles \19 and 21} at opposite sides of the jig 4 and with
the common axial line between said‘ spindles intersecting
the axis of the ?lament 1. The said spindles have aligned
pairs of apertures 21 (FIG. 5) extending longitudinally
therethrough at opposite sides of the spindle axis to sup—
port a pair of wires 22 and 23 transversely across, and
above and below, the ?lament 1. As explained more fully
hereinafter, the wires 22 and 23 are twisted together by
rotation of the spindles 19 and 20 in opposite directions
about their axes, and the wires are also bent to approxi
apertures for supporting a pair of wires which extend trans
mately U shape to ‘form the braces 24- shown in FIG. 2.
versely across the ?lament at opposite sides thereof so
Each of the spindles 19‘ and 20‘ has a concentric gear
that upon rotation of the spindles in opposite directions,
portion 25 (FIG. 3) and is mounted in a leg of a U-shaped
the wires are twisted together with the ?lament caught
bracket 26 secured to the table 13, and is held in place
therebetween. Another feature of the invention is the
by a cover plate 27. For rotation of the spindles, there
provision of means comprising hollow needles or tubes
is provided a pair of vertical racks 28 meshing with
for threading the support wires through the said spin
the gears 25 at opposite sides of the common axial line
dles. A further feature is the provision of means for
of the spindles 19 and 20‘. The racks 28 are tied together
forming the twisted wire braces to a U shape.
at the top and bottom by respective cross heads or blocks
Other features and advantages of the invention will
29 (FIG. 1) and are actuated by a low torque synchronous
appear from the following detailed description of a species
motor 30 through reduction gears (not shown), ‘a shaft
thereof and from the drawings wherein:
31 and pinion 32 meshing with one of the racks 28.
‘FIG. 1 is a perspective view of apparatus comprising
The wires 22 and 23 are supplied from respective spools
the invention with a portion of the front of the supporting 40
33 and 34 (FIG. 1) and extend through a friction pad
table or platform cut away;
device 35 having apertures in which the respective wires
FIG. 2 is a perspective view of a ?nished ?lament as
are received and restrained by the back of the head por
sembly held in a jig by means of which the ?lament is
tion 36 (FIG. 3) of a stud 37 under the pressure of a
supported during the assembly of the braces therewith;
FIG. 3 is a plan view, on a larger scale and partly 45 spring 38. The wires extend from the friction pad 35
in section, showing the main operating elements of the
apparatus;
to a threader device 39 comprising a bracket 40 on table
a lead-in wire 2 attached to each end thereof and which
terminates in a hook or loop 3. Although shown as a
the apertures 21 therein are located one ‘above the other
13 having slideways for a slide 41 which is provided with
hollow threading needles or tubes ‘42 arranged one above
FIG. 4 is a fragmentary vertical elevation, in section,
the other in alignment with horizontal passages 43 through
showing a supporting slide for the ?lament assembly in
cluding a clamp for one end of the jig shown in FIG. 2; 50 which the wires extend and in which they may be gripped
by the head of a threaded stud 44- having a ?nger grippable
and
knob 45 at its outer end.
FIG. 5 is a fragmentary perspective view showing the
At the start of the threading operation, the racks 28
brace bending or forming mechanism in association with
a portion of the brace twisting mechanism.
are in a lowermost position with the upper cross ‘head 29
Referring to FIGS. 2 and 3, the assembly to which the 55 resting on the upper surfaces of the bracket 26 and hold
braces are to be attached consists of a ?lament 1 having
ing the spindles 19 and 20 in a rotative position such that
in a vertical plane to be in alignment with respective
single line for convenience, the ?lament 1 is actually a
threading needles ‘42. Also, the slide 41 is then in a re
very ?ne coil of tungsten wire. The ?lament lead Wire 60 tracted position to the right against the friction pad 35
assembly is mounted on a removable jig 4 comprising a
(FIG. 3), and with a very short length of the wires 22
rigid length of Wire having retroverted end portions 5
and 23 protruding from the ends of the needles 42, and
formed to provide loop-s ‘6 at the ends of the jig and ter
with the wires held ?rmly in the slide by the stud 44, 45.
minating in short upstanding or lateral end projections 7.
The ?lament assembly is mounted by hooking the loops 65 The wires 22 and 23 are threaded through the spindles
19 and 21)1 by moving the slide 41 to the left in FIGS. 1
3 over the projections 7 so that the ?lament is stretched
and 3 to carry the needles 42, with the wires therein,
taut ‘along the jig.
3,084,721
3
through respective apertures 21 (FIG. 5) in the spin
dles and respectively above and below the ?lament 1.
With the needles protruding a small distance beyond
the end of spindle 29, the ends of the Wires 22 and 23 are
grasped and pulled out by the operator and then laid
across the ends of the spindle 20, after which they are
clamped to the spindle by a cap 46 ?tted onto the end
of the spindle by the operator. The gripping stud d4,
4
merit in said support means, said spindles having aligned
pairs of apertures extending longitudinally therethrough
at opposite sides of the spindle axis for supporting a pair
of wires transversely across said ?lament at opposite
sides thereof, and means for rotating said spindles in
opposite directions about their axes to form a brace by
twisting said pair of wires together with the ?lament
caught therebetween, said ?lament support means in
cluding a slide member, and means mounting said slide
and 23, and the slide 41 is retracted to the right in FIG. 10 member for rectilinear shifting in steps of equal length
to bring successive portions of the ?lament between said
3 against the friction pad 35, the wires 22 and 23 are
spindles for attachment of braces thereto as aforesaid.
severed by the operator at a point close to the ends of
'2. In apparatus for ‘forming a lamp ‘?lament assembly,
the needles 42, after which the ends of the severed wires
45 is then loosened to release its grip on the Wires 22
projecting from spindle 19 are laid across the end of
the combination of support means for a linearly extend
tor 30 and cause the racks 28 to rise and thereby re
the common axial line between said spindles transverse
the spindle and clamped thereto by a second cap 47. 15 ing ?lament, a pair of opposed and axially aligned spin
les located at opposite sides of said support means with
The operator then throws a switch to energize the mo
volve the spindles 1% and 2% through their gear portions
to and substantially intersecting the axis of the ?lament
in said support means, said spindles having aligned pairs
25. At the upper limit of travel of the rack 28 the
of apertures extending longitudinally therethrough at op
20
lower cross piece 29 engages the lower end of backing
posite sides of the spindle axis for supporting a pair of
or support members 48 extending downward from the
wires transversely across said ?lament at opposite sides
table 13, and the operator then turns off the motor, severs
thereof, and wire threading means comprising a pair of
hollow needles ‘arranged to carry said pair of wires, and
ends of the spindles 19 and 2t}, and removes the caps
25 means mounting said needles to be in alignment with the
46', 4'7 and the severed ends of the wires.
pairs of apertures in said spindles and to advance said
The twisted Wires are then bent to approximately a
needles with the wires therein toward said spindles and
U shape as shown in PEG. 2, by mechanism including
through the apertures therein and to retract said needles
anvil members 49 (FIG. 5) mounted on a bed block
from said spindles, means for securing the said wires
50 attached to bracket 2s and straddling the brace 4
and ?lament 1, the brace it lying in a longitudinal slot 30 against retraction with said needles, and means for ro
tating said spindles in opposite directions about their axes
51 in the block 59. The bending mechanism also in
to form a brace by twisting said pair of wires together
cludes a removable die block 52 which is arranged to
with
the ?lament caught therebetween.
slide along the upper surface of the bed block 50‘. The
3. In apparatus for forming a lamp ?lament assembly,
die block 52 carries at its forward end a spring~loaded
the combination of support means for a linearly extending
pressure pad 53‘ having a stem portion 54- extending into
?lament, a pair of opposed and axially aligned spindles
a cavity in the block 52 and biased forwardly by a
located at opposite sides of said support means with the
spring 55 to a limiting position determined by engage
common axial line between said spindles transverse to and
ment of a pin 56 on stem 54 with the forward end of
substantially intersecting the axis of the ?lament in said
a slot 57 in a cover plate 58. The pad 53 is slotted at
the Wires 22r and 23 at points adjacent the proximate
59 to accommodate the ?lament 1 and brace 4.
When
support means, said spindles having aligned pairs of aper
tures extending longitudinally therethrough at opposite
the block 52 is slid forward along the bed 5%, the pad
53 clamps the central portions of the twisted wires 22
and 23 against the faces 60 of the anvil 49, and the ends
of the wires are engaged by divergent die faces 6 and bent
around the anvil faces 6% against the divergent sides 62
sides of the spindle axis for supporting a pair of wires
transversely across said ?lament at opposite sides thereof,
and means for rotating said spindles in opposite directions
about their axes to form a brace by twisting said pair of
notch 64 (FIG. 3). Upon replacement of the die block
ing ?lament, a pair of opposed and axially aligned spindles
wires together with the ?lament caught therebetween, and
thereof to form the wires to the U-shaped braces 24
forming means comprising an anvil member having face
shown in FIG. 2.
portions arranged to straddle the ?lament held in said
Upon completion of a brace 24, the die block 52 is
support means and to extend adjacent to the common axial
temporarily lifted off the bed 50» and the ?lament as 50 line between said spindles so that said brace extends across
sembly 1, 2 is repositioned longitudinally by grasping
said face portions, die means, and means for supporting
the slide 11 and pulling it toward the front of the table
said die means in apposition to said anvil member and
(downwardly of the drawing in FIG. 3) to overcome the
for movement toward said anvil member to bend the said
frictional engagement of a ball detent 63 (FIG. 4) with
brace around the edges of the said face portions of said
a notch 64 in the underside of slide 11 and in which 55
anvil.
it is held by a spring ‘65. The slide 11 is moved for
4. In apparatus for forming a lamp ?lament assembly,
wardly until the detent 63 is engaged by a succeeding
the combination of support means for a linearly extend
52 on the bed 59, interference with the already formed
located at opposite sides of said support means with the
brace 24 is avoided by virtue of a cavity 66 (FIG. 5) 60 common axial line between said spindles transverse to
in the bottom of the die block. Prior to formation of the
and substantially intersecting the axis of the ?lament in
next brace 24, the racks 28‘ are lowered by energizing
said support means, said spindles having aligned pairs of
the motor 30‘ to bring the upper cross piece 29 down
apertures extending longitudinally therethrough at op
posite sides of the spindle axis for supporting a pair of
upon the upper surfaces of bracket 26 and align the
spindles 1§ and 20 for reception of the wire feeding 65 wires transversely across said ?lament at opposite sides
thereof, wire-threading means comprising a pair of hollow
needles 42.
needles arranged to carry said pair of Wires, and means
What we claim as new and desire to secure by Let
mounting said needles to be in alignment with the pairs
ters Patent of the United States is:
of apertures in said spindles and to advance said needles
1. In apparatus for forming a lamp ?lament assembly,
with the wires therein toward said spindles and through
the combination of support means for a linearly extend
the apertures therein and to retract said needls from said
ing ?lament, a pair of opposed and axially aligned spin
spindles, means for securing the said wires against re
dles located at opposite sides of said support means
traction with said needles, means for rotating said spindles
with the common axial line between said spindles trans
in
opposite directions about their axes to form a brace
verse to and substantially intersecting the axis of the ?la
5
6
by twisting said pair of wires together with the ?laments
caught therebetween, and forming means comprising an
anvil member having face portions arranged to straddle
References Cited in the ?le of this patent
UNITED STATES PATENTS
the ?lament held in said support means and to extend
adjacent to the common axial line between said spindles 5
so that said brace extends across said face portions, die
means, and means for supporting said die means in ap
position to said anvil member and for movement toward
said anvil member to bend the said brace around the
edges of the said face portions of said anvil.
10
595,623
929,075
973,648
Guthrie ______________ __ Dec. 14, 1897
Buhse ________________ __ July ‘27, 1909
Gibbs _______________ __ Oct. 25, 1910
1,716,844
Van Veen ____________ __ June 11, 192.9
Brindle ______________ __ Nov. 3, 1931
1,830,222
2,416,672
2,872,949
Archer _______________ __ Mar. 4, 1947
Reiter et al. _________ __ Feb. 10, 1959
Документ
Категория
Без категории
Просмотров
0
Размер файла
501 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа