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Патент USA US2110134

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March 8, 1938.
H. A. DOUGLAS
I
2,110,134
ELECTRIC LIGHTING DEVICE AND MANUFACTURE THEREOF
Filed Jan. 21, 1935
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Haas-r5 A‘ Douglas
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March s, 1938.
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HA. DOUGLAS
_ 2,110,134
ELECTRIC LIGHTING DEVICE AND MANUFACTURE THEREOF
Filed Jan. 21, 1935
3 Sheets-Sheet 2
Haxr? A-Deqslas
I N VLN‘TOK
ATTORNL‘S
March 8, 1938.,
H. A.. DOUGLAS
2,110,134
ELECTRIC LIGHTING DEVICE AND_ MANUFACTURE THErREOF
Filed Jan. 21, 1935
1”
I
3 Sheets-Sheet 3
HMS £13322!’
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2,110,134
Patented Mar. 8, 1938
UNITED STATES PATENT OFFICE
2,110,134’
ELECTRIC LIGHTING DEVICE AND MANU
FACTURE THEREOF
Harry A. Douglas, Bronson, Mich, assignor to
Kingston Products Corporation, a corporation
of Indiana
Application January 21, 1935, Serial No. 2,123
16 Claims. (‘01. 176-7)
placed i‘rom that axis. The lamp 20 includes
means providing a base 25 ior'the lamp. The
base means here shown includes a generally cy
lindrical shell member 26 in which the bulb 22
My invention relates to electric-lighting de
vices and the making of such devices. ~More par- .
ticularly, my invention relates to electric lighting
devices such as are mounted in re?ectors, as in
. automobile head-lamps, and the making of such
is secured in a well known manner. The base
means includes a lateral extension, which in this
instance is shown as including a cylindrical por
devices. The principal object of my invention is
to provide a newand improved device of these
“ types, including a new and improved method and -
apparatus for making the same. In the drawings
cylindrical portion or skirt 28 by a curved annu
accompanying this speci?cation, and forming
sired. ‘The cylindrical portion 21 may be fas
invention may assume; in these drawings:
Figure l is a side elevational view, partly in
section, of one embodiment of my invention,
Figure 2 is a fragmentary view of one face of a
i
mounting,
a
tened to the shell 26 in any suitable manner. The
skirt portion 28 is provided with a plurality of 15
laterally extending portions 3|, 32, 33. The per
tions 31, 32, 33 are shown as struck out from the
skirt 28, and.v each struck out portion is shown
»
Figure 3 is a perspective view of a detail of
Figure 1,
10
lar portion 29. The skirt 28 is spaced from the
shell 26, and”may have its edge 30 rounded if de
part of this application, I have shown, for pur
poses of illustration, certain "forms which my
A
tion 21 surrounding the shell 26, the cylindrical
portion 21 being integrally joined to another
as comprising a pair of radially outwardly ex
-
tending portions 34, 35 and a circumferential
portion 36, joining the ends of the radially ex
Figure 4 is a front view of a mounting, with
the detail of Figure 3 not completely assembled
tending portions 34, 35, the portions 34, 35, 36
therewith,
'
Figure,5 is a front view, of the parts shown . forming an aperture extending in an axial direc
tion.
in Figure 4, completely assembled,
.
The mounting 21 is provided with a circular 25
Figure 6 is a section taken along the line 6-6
aperture 31, the diameter of which is enough
of Figure. 1,
larger than the diameter of the skirt 28 so that
Figure 1 is a fragmentary sectional view, en
the skirt 28 may be readilyslipped through the
larged, taken on the line 1'—-1 of Figure 6,
Figure 8 is a view similar to Figure 7 with aperture 31.
The base 25 is adapted to cooperate with a 30
30 the partsin a different position,
socket
means or connecting means 38. For con
Figure 9 is a side elevational view, partly in
section, of another embodiment-of my invention, venience the connecting or ‘socket means will be
Figure 10 is a front view, partly in section, of referred to as socket means. The socket means
comprises a generally cylindrical shell 39 pro
parts of the embodiment of Figure 9, partly as
vided with a radially extending ?ange 40 from
'
'
35 sembled,
Figure 11 is a sectional view of the same parts which extend in an axial direction a plurality of
as in Figure 10, with the parts completely assem- . circumferentially spaced portions or bars 41,
bled, the section being taken along the line i l-—>l l 42, 43, shaped in this instance to form hooks.
All of these hooks, in the illustrated embodiment,
of Figure 9,
are of the same form so that in the following
40
Figure 12 is a detail view of a part illustrated
description reference may be had to the hook 43
which may be most clearly seen in Figure 3.
The hook 43 comprises a throat 44 and a mouth
12 but with the parts in a di?erent position, and
45
which is partly closed by a lip 46. The lip
Figure 14 is a side elevation, partly diagram
45
' matic, of‘ apparatus for carrying out the method 46 is of triangular form providing a pair of cam
of making one of the parts of the embodiments surfaces 41, 48. If desired the end of the hook
hereinbefore referredv to, said ?gure‘ including vmay have its corners 49, 50 beveled oii. The
cam surface 41 extends to the bottom 51 of the
also another embodiment of said part.
‘
Referring to Figure 1, there is here shown an inouth of the hook.
The width of the hook between the outer edge 50'
incandescent electric “lamp 20 connected to a
mounting 2 I. The mounting 2| may be a re?ector 52 of the lip 46 and the edge 53 of the back of 1
oi parabolic form. The lamp 20 comprises a the throat 44 of the hook is such as to pass free
bulb 22 containing a pair of ?laments 23, 24. ly through apertures 54, 55, 56 respectively, in
The ?lament 23 is here shown as disposed on the the mounting 2|. The apertures 54, 55, 56 are
here shown as constituting radial extensions of 55
axis of the lamp, whereas the ?lament 24 is dis
in Figures 9.through 11,
_
v
Figure 13 is a view of a detail similar to Figure
2
2,110,134
the aperture 31. The throat 44 of. each hook
Y is of a width to ?t the circumferential width of a
set of apertures 51, 58, 59 respectively, which
apertures also are here shown as constituting ra
. dial extensions of the aperture 51. The aper
tures 54, 51 and 55, 58 and 56, 59 are separated
respectively by radially inwardly extending pro
jections 68, 6|, 62, the sides of these projections
de?ning edges of the apertures 51, 58, 59 being
10 substantially radial, whereas the other sides are
in the form of cam surfaces 63, 64, 65.
The radially outer margins of the apertures 54,
55, 56 and 51, 58, 59 lie on a circle having a diam
eter substantially the sameas the diameter of the
15 cylindrical surface de?ned by the outer periph
eries of the hooks 4|, 42, 43, the radial extent
of these apertures being substantially the same
as the radial thickness of the hooks.
In connection with one use to which the em
20 bodiment of Figures 1 through 8 may be put, the
hooks‘ 4|, 42, 43 are desirably unequally spaced
about the axis of the socket means 38, the sets
of apertures 51, 58, 59 and 54, 55, 56, and the ex
tensions 3|, 32,33, being correspondingly un
25 equally spaced about the center of the aperture
31 and the axis of the base of the lamp re
spectively, as illustrated in Figures 1 through 6.
The socket. means 38 is provided with an in
sulating member 66, adjacent one side of which
are radially inwardly extending diametrically
‘ opposite segmental ?anges 61, 68 provided on the
shell portion 39. The insulating member 66 may
be fastened to the shell portion 39 by means of
tongues, two of which 69, 18 are visible in Figure
1. These tongues may be clinched over the out
side of the insulating member 66. A composite
leaf spring 1| may be interposed between the in
sulating member 66 and the segmental ?anges
61, 68, so that the spring is ‘also held between
the ?anges and the clinched-over tongues 69, 16.
The spring 1| may include an annular part 12,
having an aperture large enough to pass the shell
39, the part 12 being provided with a desired num
ber of radially inwardly extending projections
45 13 against which the insulating member 66 is
adapted to be pressed. The spring 1| is here
shown as provided with three legs, two of which
14, 15 are visible in Figure 3. The legs 14, 15 of
the spring are bowed radially outwardly inter
50 mediate their ends and their point of connection
to the annular portion 12.
'
‘
The insulating member 66 is here shown as
carrying a pair of contacts 16, 11, each of these
contacts being connected to a conductor, only one
55 of which, 18, is visible. The conductor passes
through a'sleeve 19 provided with a ?ange 80
adapted to be engaged by the head of the con
tact 16. The sleeve 19 is slidable in a bushing
60
8|, the bushing passing thro gh-the: insulating
member 66 and being ?xed tllilbreto in any suit
able manner as by providing beads 82 on the
bushing. A spring 83 is provided for urging the
contact 16 away from the insulating member 66,
the spring 83 'at one end abutting the ?ange 80
and at the other end the bushing 8|. The con
tact 11 is similarly resiliently mounted.
The contacts 16, 11 are adapted to engage a
of the contacts 84, as will be obvious to those
skilled in the art.
I
The assembly and operation of the embodiment
of the invention illustrated in Figures 1 through
8 is as follows. When it is desired to assemble
the socket means 38 with the mounting 2|, the
hooks 4|, 42, 43 are inserted through the aper
tures 54, 55, 56 respectively, against the bias of
the composite spring 1|, the ends of which abut
the rear face of the mounting, until the lip por
tions 46 of the hooks extend beyond the front
face'bf the mounting 2|. The parts are then
in the position shown in Figure 4. The socket
means is then rotated in a counter clockwise di
rection, as viewed in Figure 4.
Such rotation
causes the throat portions 44 of the hooks to en
gage the cam surfaces 63, 64, 65, thereby forcing
the throat portions radially inwardly. Counter
clockwise rotation of the socket means is con
tinued until the trailing edges 53 of the throat
portions 44 snap off of the projections 66, 6|, 62,
the throat portions moving radially outwardly
and becoming seated in the apertures 51, 58, 59.
The parts are then in the position shown in Fig;
ure 5.
When axial pressure on the socket means
is removed, the composite spring 1| acts to move
the socket means axially toward the right as
viewed in Figure 1, thereby pulling the apexes of
the triangular lips 46 against the front face of
the mounting 2| .
The socket means ‘and mounting are now ready
to have an incandescent lamp connected there
to. The lamp, such as 20, may have its base 25
brought into register with the inner periphery
of the hook portions 4|, 42, 43, and with the
lateral extensions 3|, 32, 33 so positioned that
by moving the lamp 26 axially toward the mount
ing 2| the extensions 3|, 32, 33 will come into
abutmentlwith the front face of the mounting
2|.
The lamp 26 is then rotated toward the .
mouth portions 45 of the hooks to thereby bring
the leading portions 35 of the lateral extensions
3|, 32, 33 against the respective cam surfaces
48 of the lips of the hooks, as shown in Figure 8.
Further rotation of the lamp 28 in the same di
rection causes the portions 35, by cam action on
thesurfaces 48, to pull the hooks 4|, 42, 43 fur
ther through the mounting 2|, against the bias
of the composite spring 1|. When the trailing
edge of the portion 35 passes the apex of the lip
portions 46, the parts are brought to the position
shown in Figure 7 in which the ends of the lip
portions 46 of the hooks are disposed in the axial
ly extending apertures formed between the ra
dial portions 34, 35 of the extensions 3|, 32, 33.
The parts are so proportioned that the apex of
the lip portions 46 is then out of contact with‘
the front face of the mounting 2|, so that sur
faces of the lateral extensions 3|, 32, 33, opposed
to the face of the mounting, are maintained in
?rm engagement and registry with the. front face
of the mounting 2|.
The hereinbefore described embodiment of
my invention is. well adapted for use where the
aperture 31 is'an aperture located in the crown
of a parabolic re?ector, concentric with the axis
of the re?ector. For such use the lamp is pre
focused, that is, the position of the lateral ex
tensions 3|, 32, 33 is so chosen that the general
pair of contacts 84 provided on the base of the
lamp 20, only one of the contacts 84 being visible
70 in Figure 1. The ?lament 23 of the lamp may > plane of these extensions is so positioned that
have one of its terminals connected to one of the lighting center of the ?lament 23 is not only
the contacts 84 and its other terminal to the on the axis of the re?ector but is at the focal
shell 26. The ?lament 24 may likewise have one point of the re?ector. The ?lament 24, which
__Y':‘ .of its terminals connected to the shell 26 and may be used either alone or in combination with
[75 its other terminal connected to a different one the ?lament 23, therefore is also disposed at a 74
.
2,110,184
3
'
of apertures have radially outer margins which
predetermined position with respect to the re
?ector,‘ for the reason that the lamp20 may be
connected to the re?ector at but one predeter
mined position about its axis because of the un
are at an angle to a radius of the aperture 86,
substantially the same as the angle of the tan
gent bent portion of the throats 93. These sets
equal spacing of the apertures 51, 58, 59 and
the correspondingly unequal spacing of the hook
portions 4|, 42, 43 and the lateral extensions
of apertures consequently form triangular pro
jections H4, H5, H6, the apexes of which lie
on a circle larger than the aperture 86 by an
base are caused to properly engage the desired
ness of the hook portions 98, SI, 92. The cir
cumferential width of each of the pairs of ap 10
ertures I02, III and I03, H2 and I04, H3 is
su?icient respectively to pass the circumferen
3|, 32, 33. Furthermore, the contacts 84 in the a amount substantially equal to the radial thick
_ respective contacts 16, 11 so that the switching
.device (not shown) connected to the contacts
16, 11 will be able to cause current flow in the
?laments 23, 24 in the desired relations.
,
Figures 9 through 13 illustrate another em
bodiment of my invention, in which the lamp
20, here shown as identical with the lamp 20
of Figure 1, is assembled with a mounting 85
having a ‘circularaperture 86 which is of such
diameter as to freely pass the skirt 28 of the base
of the lamp 28.
‘\
A connecting means or socket means 81 is pro
vided, having a shell portion 88. The shell por
tion 88.has "a radial flange 89 provided with ax
ially circumferentially spaced portions 98, 9|,
25 92 made in the form of hooks.
The outer pe
ripheries of the portions 90, 9|, 92 de?ne a
cylindrical-surface, with exceptions to be noted
hereinafter.
so
Each hook has a throat portion 93 and a
mouth 94, along with a lip portion 95 partially
closing the mouth of the‘hook. The lip 95 may
have a beveled outer corner to act as a cam
surface, if desired.‘ The bottom 96 of the mouth
of each hook is adapted to overlie portions 91, 98,
99 of the mounting 85. The radially inner edges
of the portions 91, 98, 99 are de?ned by the
aperture 86.
40
45
.
tial width of the reduced ends of the hooks re
spectively. ‘Due to the unequal circumferential
spacing of the apertures I82, I83, I 04, the ap 15
erture II2 merges with the aperture H0.
The socket means ‘may be provided with an in
sulating contact carrier II1 similar to the con
tact carrier 66 of Figure 1, but in this instance
no spring H is provided, so that the contact car
rier II1 directly abuts radially inwardly extend
ing segmental ?anges H8, H9 on the shell por
tion 88. The contact carrier II1 may be
fastened to the shell member 88 by means of
clinched tongues I28.
. 25
The contact carrier H1 is here shown as car
rying a pair of contacts I2I, I22 which are con
nected to conductors and resiliently biased to
ward the contacts 84 on the lamp base in a'man
ner the same as already described in connection 30
with Figure 1.
-
The embodiment of the invention illustrated in
Figures 9 through 13 is assembled and operated
in the following manner. The hook portions 98,
9|, 92 are brought into registry with the pairs 35,
of apertures I02, III and I83, H2 and I04, II3
respectively and thrust through these composite
The edges of each of the hooks 98, 9I, 92 op
posite the lips 95, are undercut from the ends
of the hooks, the undercut extending axially
along a line I00, partially into the throat por
tion 93, to a shoulder I8I. The shoulder IN is
axially spaced from the bottom 98 of'the mouth
of the hook by an amount substantially the
apertures until the shoulders I8I abut the rear
face of the mounting 85. The socket means is
then rotated in a counter clockwise direction, 40
as viewed in Figure 10, whereby the triangular
same as the thickness of the mounting 85.
of the mounting portions 91, 98, 99, which action
_
The throat portions 93 of the hooks to and
portions H4, H5, H6 force the hooks radially
inwardly. As the counter clockwise rotation
continues the leading edges of the lips 95 ride
radially inwardly up onto the inner peripheries
‘ including the edges I00 of the hooks are bent may be assisted by the beveled edges of the por
radially outwardly, so that, as can be seen in tions 91, 98, 99. Further counter clockwise ro
Figures 10 and 11, the bent throat portions .tation causes the trailing edges of the lips 95
50
have radially ‘outer surfaces tangent to the cylin
drical surface defined by the hooks 90, 9|, 92.
.Those portions of the throat portions 93 which
terminate in the shoulders IOI- are also bent ra
dially outwardly, in this instance slightly more
55 than the edges I00.
.
The reduced parts of the throat portions 93
of the hooks are adapted to be seated in aper
tures I02, I03, I04 in the mounting 85. The lips
to snap into the apertures I85, I86, I81. At the 50
same time the trailing edges I80 of the‘ hooks
snap off of the triangular projections H4, H5,
H6, thereby seating the reduced portions of ‘the
necks 93 in the apertures I02, I83, I84 respec
tively. The parts are then in the position shown 55
in Figure 11, in which the socket means is
latched both against rotational movement in
either direction, and against any substantial
axial movement in either direction.
In the assembled position of the socket means 80
tures
I05,
I06,
I01
respectively.
The
apertures
60
I02, I03, I04 and I85, I06, I01 are here shown in the mounting 85, the lips 95 of the hooks ex
as constituting radially outwardly extending por~ tend in an axial direction toward the right, as
tions of the aperture 86 to thereby form the viewed in Figures 9,12, and 13, beyond the rear
portions 91, 98, 99 of the mounting, of a radial face'of the mounting 85, a predetermined desired
6.5
amount.
65 extent substantially the same as the ‘thickness
The parts as shown in the position in Figure
of the hooks.
,
'
The mounting 85 is provided with another set 11 are ready to receive and have connected there
‘of apertures I88, I09, IIO, which, when the hooks to a lamp 28. The lamp is ?rst brought into
98, 9I, 92 are assembled with the mounting, are registry with the skirt 28 of the base in registry
adjacent the circumferentially outer edges of the_ with the aperture 86, and with the lateral ex 70
70 lips 95, and extend radially beyond the radially tensions 3I, 32, 33 in registry with the apertures
I08,- I09, H8. The lamp is then moved axially,
outer margins of the apertures I05, I06, I81.
against
the bias of the contacts I2I, I22, thereby
The mounting 85 is provided with another set
of apertures III, H2, H3 adjacent the set of causing the lateral extensions 3I, 32, 33 to pass
apertures I82, I83, I04, and both of ‘these sets through the apertures. I88, I89, II8 to a position 75
75
95 of the hooks are adapted to be seated in aper
4
2,110,134
axially beyond the rear face of the-mounting 85.
The lamp 20 may then be rotated in such direcé
tion that the lateral extensions 3I, 321, 33 enter
the mouth portions 94 of the hooks, whereupon
the lamp may be released, the resiliently biased
contacts I2I, I22 moving the projections 3|, 32,
33 towards the bottoms 96 of the mouth portions
the rear face of the mounting 85, as can be seen
10 from Figures 9 and 13. The resiliently biased'
contacts I2I, I22 not only force ‘the projections
the front face of the mounting.
_
As in the embodiment of Figures 1 through 8,
the embodiment of Figures 9 through 131 is adapt
ed to be used in instances where the aperture 86
is located on the axis of a parabolic re?ector.
For reasons already pointed out in connection
20 with Figures 1 through 8, the lamp 20 may be of
the Dre-focused type, which is accomplished by
properly locating the lateral extensions 3|, 32,
33 on the base with respect to the ?lament 23 and
with respect to the focal point of the re?ector.
The lateral extensions 3I, 32, 33 may be prop
erly located on the base ‘by making a lamp, com
plete except for the lateral extensions or position
ing means 3I, 32, 33, then adjusting such a lamp
to a predeterminedposition and then while the
30 lamp is in that predetermined position forming
the positioning means on the base.
This method may be carried out by apparatus,
one embodiment of which is illustrated in Fig
ure 14.
The apparatus shown in Figure 14 includes a
support I23 desirably of insulating material, car
rying a pair of contacts I24, I25 connected to
conductors I26, I21 respectively. The contacts
I24, I25 may, if ‘desired, have slightly dished con—
40 tact surfaces. The conductors I26, I21 are dis
posed through sleeves I2B, I29 which are in turn
slidable in bushings I30, I 3I suitably ?xed to the
support I23. The contacts I24, I25 are biased
upwardly by springs I32, I33, and in general, the
45 contacts I 24, I25 may be supported and biased
in a manner similar to that already described in
connection with the contacts 16, 11, of Figure 1.
The contacts I24, I 25 are adapted to be en
ga'ged by contacts I34, I35 carried by the lamp
50 I36. The lamp I36 is similar to the lamp 20
hereinbefore described, but in this instance the
lamp may have a-bulb I31 which is mounted in a
base I38 having a shell portion I39 and a skirt
portion I40 which is an integral part of the shell
55 I39, spaced therefrom and cgmected thereto by
the curved annular portion MI. The principal
difference between the lamp I36 and the lamp 20
is that the skirt portion I40 forms an integral
part of the. shell I39, whereas in the lamp'20' the
so base means is made in two parts comprising gen
erally a shell portion 26 and the skirt portion 28
suitably fastened thereto. The lamp I36, as in
the case of the lamp 20, may be provided with a
4
The lamp I36 may be held with its ‘contacts
65
pair of filaments I42, I43.
I34, I35 in engagement with the contacts I24,
I25, and adjusted with respect to these contacts
and the support I23, by means which includes a
dished member I44 adapted to engage the top of
the bulb I31. The member I44 may be provided
with a stem I45 sli'dablethrough an aperture I46
in a lever I41. The movement of the stem I45
may be limited by a collar I48 on the stem.
Where the stem I45 is movable with respect to
75 the lever I41, a spring I49 may be interposed
means of a ball and socket joint I50 to a lever
I5I. The lever I5I may be provided'with a 5
socket I52 adapted to receive a ball I53 on the
end of the lever I41. The opening I54 may be
94, and seating those projections directly against
3I, 32, 33 against the rear face of the mounting
85 but force the bottoms 96 of the. hooks against
betwen the dished member I44 and the lever,
biasing the member I44 away from the lever.
The lever I41 is here shown as connected by
limited so as to limit the range of movement of
the lever I41 with respect to the lever I5I.
The lever I5I may be mounted to swing in one 10
plane about the pivot I56 carried by a bracket
I55. The bracket may be provided with stops
I51, I58 to limit the range of movement of the
lever I5I. The lever I41 is desirably provided
with a handle I 59.
,
.
15
Die means I60 are provided for forming the
positioning means on the lamp base. For the
sake of clearance only one die means has been
shown, but it is‘to be understood that at least one
other die means is preferably utilized, and in 20
the case of making pre-focused lamps preferably
three die means are used. The three die means
are then disposed at equalradial distances from
a line, midway between the axes of the contacts
I24, I25, parallel to said axes. Furthermore, the 25
three die means are desirably spaced circumfer
entially at predetermined points with reference
to the general plane of the contacts I24, I25.
The die means I 60 is here shown as including a
pair of dies I6I, I62, the die element I6I being of 30.
the matrice type and the die element I62 of the
punch type.
The matrice die element has a recess
I63, which is of the same axial length as that of
a punch projection I64 on the die element I62.
The circumferential width of the recess I63 is the 35
same as the desired circumferential distance be
tween the outer faces of the radially extending
portions 34, 35 of the lateral extensions 3I, 32, 33.
On the other hand, the circumferential width
of the punch portion I64 is the same as that be
tween the inner faces of the portions 34, 35; It
40
of course will be understood that the shape and
dimensions of the matrice and punch portions
of the die means I60 will depend upon the form
of lateral extensions it is desired to make.
The die elements I6I and I62 may have their
opposing faces provided with recesses I65, I66,
to enable a skirt portion such as 28, having a
rounded edge 30, to be properly worked upon.
The die elements I 6 I , I62 are shown as mounted
on a pivot. I 61 carried by a lever I68. The die
elements I6I, I62 are provided respectively with ’
cam surfaces I69, I10 together forming a V
shaped recess. The die elements I 6I , I62 may
be biased away from each other by a spring I13 55
having its ends engaging pins I1I, I12 mounted
on the elements I 6|, I 62 respectively. Separation '
of the upper ends of the die elements I6I, I62 is
limited to a predetermined extent by engagement
of the pin "I with the cam surface I10.
'
The lever I68 may be mounted on a pivot I 14 on
a stationary bracket, and may be biased to a pre
determined position by means of springs I11, I18
respectively. The spring I11 may have one end
attached‘ to a stationary bracket I15 and the other 65
end to a pin I19 on the lever I68, and the spring
I18 may have one end attached to the pin I19
and the other end to a stationary bracket I16.
The die elements I 6 I, I62 may be moved toward
each other by means of an operating member I80
having at the upper end thereof two cam surfaces
I8I, I82 forming a V-shaped cam cooperable with
the cam surfaces I69, I10. It is to be under
stood that-there will be as many operating mem
75
5
2,110,134
bers I80 or equivalent elements as there are die
means I60.
.
The operating member I80 is carried by a mem
ber I83 extending at right angles thereto and
adapted to be reciprocated in any suitable man
ner. In thelform of the apparatus shown the
member I83 is reciprocable by means of a non
magnetic member I84 to which is attached a mag
.netic core I85 cooperable with a, solenoid I86.
The parts are shown in the position which they
assume when the solenoid is energized. When
the solenoid is deenergized, the member I83 drops
.until it rests on' top of the solenoid. Thus when
the solenoid is deenergized there is a gap between
the upper end of the operating member I80 and
the surfaces I69, I10. ‘
,
.
'Iihe solenoid I86 is shown as connected to a
pair of line wires I81, I88, the connection having
a switch or push button I89 interposed therein,
The conductors I26, I21 may also be connected
to the line wires I81, I88 through a switch I90.
The switch I90 and the‘ push button I89 may be
mounted at any. place most convenient for the
operator of the apparatus.
The apparatus illustrated in Figure 14 may be
operated as follows, to carry out the hereinbefore '
referred to method of making pre-focused lamps.
The lamp, with its ?laments in predetermined re
lation to the support I23, is placed with its con
tacts I34, I35 in engagement with the contacts
‘I24, I25, the skirt portion I40 being interposed
‘between the separated die elements I6I, I62, it
being assumed that the operating member is out
of engagement with the cam surfaces I69, I10.
The switch I90 is closed, thereby lighting both
of the ?laments, if the connections are as herein
before described with regard to the lamp 20. The
dished shaped member I44 is then brought down
on top of the bulb I31 by means of the handle I59
and the lamp is depressed, and permitted to rise,
and moved about in horizontal planes, until a de- '
sired position is reached. For example, the lamp
may be so moveduntil it is in that position in
which an image of the ?lament I42, thrownLupon
45 a screen (not shown), is sharply de?ned.
Under
these circumstances the plane de?ned by the sev
eral die means I60 may be so predetermined with
respect ,to the point at which the ?lament I42
produces a sharp image that ‘ that point, and
50 therefore the coincident lighting center of the
?lament I42, will be in a line normal to the plane
of the die means, with that normal line inter
secting that plane at a. point equidistant from the
several die means, and the distance of that point
55 from that plane may be so chosen-that it will be
the same as the distance of the focal point of
the re?ector from the plane de?ned by the points
of contact between the surface of the re?ector and
the lateral extensions on the lamp base, such as
co
the extensions 3I, 32, 33 on the lamp 20. -
When the lamp I36 has been adjusted to the
v' desired position, the button I89 is pressed thereby
energizing the solenoid I86 ‘and causing the op
erating means I80 to rise and strike the surfaces
65 I69, I10 by reason of the lost motion between the
upper end of the member I80 and the surfaces
' I60, I10, thereby to move the upper ends of the
. die elements I6I, I62 toward each other, against
the opposite surfaces of the skirt I40. The die
70 elements thereby strike out from the metal of the
skirt I40 lateral extensions I9I similar to the ex
tensions 3|, 32, 33 of the lamp 20. When the but
ton I89 is released the operating member I80 de
scends and the die elements I6I, I62 are separated
the lamp I36, after lifting of the dished member
I44. The lamp I36 is now completely ?nished
for use as a pre-focused lamp.
By mounting the die elements I6I, I62 on a
?oating pivot I61, the die elements are permitted
to so adjust themselves when operating force is
applied thereto that the skirtvwill not be distorted.
From the foregoing it will be apparent to those
.skilled in the art that my invention provides a
‘new and improved electric lighting device, made 10
in a new and improved manner by new and im-,
proved means, and accordingly accomplishing at
least the principal object of my invention. On
the other hand, it also will be obvious to those
skilled in the art that the particular embodiments
herein described may be variously changed and
modi?ed, without departing from the spirit of my
invention, or sacri?cing the advantages thereof.
In general, the disclosure herein is illustrative
20
only, and my invention is not limited thereto.
1 claim:
1. The method of making a pre-focused electric
incandescent lamphaving base means provided
with means for positioning said‘lamp with respect
to a mounting means, comprising: adjusting to a 25
predetermined position a lamp provided with base
means lacking such positioning means, and so
changing the form of said base means, while said
lamp is in said predetermined position, as to pro
vide a positioning projection extending generally 30
radially outwardly from said base means as origi
nally formed.
.
2. The method of making a pre-focused electric
incandescentlamp having base means provided
with means for positioning said lamp with re 35
spect to a mounting means, comprising: adjust‘
ing to a predetermined position a lamp provided
with base means lacking such positioning means,
and forming a positioning projection on said base
means, while said lamp is in said predetermined 40
position, by striking outwardly material of said
base means.
_
3. The method of making an electric incandes
cent lamp having base means provided with
means for connecting said lamp to a mounting 45
means, comprising: providing a bulb- with base
,means complete except for connecting means,
and then forming generally radially outwardly
projecting connecting means on said base means.
4. The method of making an electric incandes 50
cent lamp having base means provided with
means for connecting said lamp to a mounting
means, comprising: providing a bulb with base
means complete except for connecting means, and
then forming connecting means on said base 55
‘means by striking outwardly, material of said
base means.
5._Apparatus for making electric incandes
z. cent iamps, comprising: means for supporting a
lamp having a base initially lacking means for 60
cooperative engagement with a mounting means;
and forming means, including a carrier, die means
movably mounted on said carrier for movement,
in' a generally radial direction with respect to the
axis of the lamp, and means for mounting said 65
carrier for movement in said direction; said f orm
ing means being constructed and arranged to be
operable to form means on the base of the lamp
for cooperative engagement with a mounting
means.
'
'
70
6. Apparatus for making electric incandescent
lamps, comprising: means for supporting a lamp ‘ '
having a base initially lacking means for co'oper
ative engagement with a. mounting means; form
by the spring I13, thereby permitting removal of ing means, including a die, so constructed and 75
6
2,110,134
arranged that it is operable to form means on
the base of the lamp for cooperative engagement
with a mounting means; and means, including a
lost‘ motion connection, constructed and ar
ranged to operate said die with a hammer blow.
'7. Apparatus for making electric incandescent
lamps, comprising: means for supporting a lamp
having a base initially lacking means for cooper
ative engagement with a mounting means; and
10 forming means, including a pair of cooperable
dies, one of said dies being of the punch type and
the other of the matrice type; said forming means
being constructed and arranged to be operable to
form means ‘on the base‘of the lamp for coopera
15 tive engagement with a mounting means.
8. Apparatus for making electric incandescent
lamps, comprising: means for supporting a lamp
having a base initially lacldng means for coop
erative engagement with a mounting means; and
forming means, including a carrier, die means
movably mounted on said carrier for movement
in a generally radial direction with respect to the
axis of the lamp, said die means including coop
erable punch and matrice dies, and means for
25 mounting said carrier for movement in said direc
tion; said forming means being constructed and
arranged to be operable to form means on the
base of the lamp for cooperative engagement with
a mounting means.
30
9. Apparatus for making electric incandescent
lamps, comprising: means for supporting a lamp
having a base initially lacking means for coop
erative engagement with a, mounting means;
forming-means so constructed and arranged that
35 it is operable to form means on the base of the
lamp for cooperative engagement with amount
ing means; and means, including a single actua
tor, so constructed and arranged that manipula
tion of said actuator is adapted to hold the lamp
40 on said supporting means and to adjust the lamp,
with respect to said forming-means in the general
direction of ‘the axis of the lamp and in planes
transverse to said axis.
10. Apparatus for making electric incandescent
45 lamps, comprising: means for supporting a lamp
having a base initially lacking means for coop
erative engagement with a mounting‘ means:
forming-means, including a carrier, die means
movably mounted on said carrier for movement
50 in a generally radial direction with respect to the
axis of the lamp, and means for mounting said
carrier for movement in said direction; said form
ing-means being constructed and arranged to be
- operable to form means on the base of the lamp
55 for cooperative engagement with a mounting
means; and means, including an electroresponsive
device, constructed and arranged to operate said
forming-means.
-
-
sive device, having a lost motion connection with
said die, constructed and arranged to operate said
die with a hammer blow.
12. Apparatus for making electric incandescent
lamps, comprising: means for supporting a lamp
having a base initially lacking means for cooper
ative engagement with a mounting means; form
ing-means, including a' pair of cooperable dies,
one of said dies being of the punch type and the
other of the matrice type, said forming-means 10
being so constructed and arranged that it is oper
able to form means on the base of the lamp for
cooperative engagement with a mounting means;
and means, including an electroresponsive device,
constructed and arranged to operate said form 15
ing-means.
_
_
.
13. Apparatus for making electric incandescent
lamps, comprising: means for supporting a lamp
having a base initially lacking means for cooper
ative engagement with a mounting means; and 20
forming-means, including a carrier, a pair of co
operable dies, both movably mounted on said
carrier for movement in a generally radial
direction with respect to the axis of the lamp,
and means for mounting said carrier for move 25
ment in said direction, said forming-means
being constructed and arranged to be oper
able to form means on the base of the lamp for
cooperative engagement with a mounting means.
14.~ Apparatus for making electric incandescent
lamps, comprising: means for supporting a lamp
having a base initially lacking means'for cooper
ative engagement with a mounting means; and
forming-means, including a pair of cooperable
dies, both movable with respect to a lamp sup
ported by said supporting means, one of said dies
being of the punch type and the other of the
matrice type; said forming-means being con
structed and arranged to be operable to form
means on the base of the lamp for cooperative
engagement with a mounting means.
15. The method of making a pre-focused elec
tric incandescent lamp having base means pro
vided with means for positioning said lamp with
respect to a mounting means, comprising: ad- K .»
justing to a predetermined position a lamp pro
vided with base means lacking such positioning
means, said base means including a shell portion
and a part extending approximately parallel to
and spaced from said shell portion, and so chang
ing the form of said base means, while said lamp
is in said predetermined position, as to provide
a positioning projection extending generally radi
ally outwardly fromv said part as originally ,
formed.
'
16. The method of making an electric incan- A
descent lamp having base means provided with
11. Apparatus for making electric incandescent
lamps, comprising: means for supporting a lamp
having a base initially lacking means for cooper
_ means for connecting said lamp to a mounting
ative engagement with a mounting means ; torm
from said shell portion, said base means being
complete except for connecting means, and then
ing-means, including a die, said forming-means
being so constructed and arranged that it is
65 operable to form means on the base of the lamp
for cooperative engagement with a mounting
means; and means, including an electrorespon
means, comprising: providing a bulb with base
means including a shell portion and a part ex r
tending approximately parallel to and spaced
forming generally radially outwardly projecting
connecting means on said part.
HARRY A. DOUGLAS. '
65
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