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Патент USA US2123483

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July 12, 1938.
w. o. LANGILLE
2,123,483
SEWING MACHINE LIGHTING FIXTURE
Filed Fat‘). 20, ‘.1937
2 Sheets-Sheet 1
July. 12, 1938.
w_ O_ LANGlLLE
2,123,483
SEWING MACHINE LIGHTING FIXTURE
Filed Feb. 20, 1937
‘u
/
,
(11/: /
2 Sheets-Sheet 2
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Patented July 12, 1938
2,123,483 ,
UNITED STATES
PATIENT. OFFICE -
2,123,483
SEWING MACHINE LIGHTING FIXTURE
Wilfred o. Langille, Chester, N. 1., assignor to
The Singer Manufacturing Company, Eliza
beth, N. J., a corporation of New Jersey
‘
Application February 20, .1937, Serial No. 126,195" 11 Claims. (Cl. 240-90)
. This invention relates to electric lighting ?x
tures, more particularly of the sewing machine
illuminating type such as disclosed in U. S. Patent
ops-rating lever l and the toggle-thrust member 5
which actuates the movable contact-member 3
to make and break the circuit through the lamp 6.
No. 2,067,868, of Jan. 12, 1937, and has for an ob- ' ' In the present instance the usual spring-pin
5 ject to provide simpli?ed and improved means to socket~terminals are replaced by two current- 6
cushion the electric'lamp-bulb so that it will not
be- subjected to destructive vibration. A further
object of. the invention is to provide the device
with an improved lens and re?ector mounting
which will prevent overheating of any of the ex
conducting screws 1, 1 which ?xedly bind to the
body I the ends 8, 8 of the two co-axial edgewise
‘ ternal parts of the ?xture likely to be- touched by
bell-shaped lamp-receptacle and shade element
l3 preferably having within its neck l3’ the usual
the operator.
spiraled current-conducting leaf-springs 9, 9 the
free ends III, In of. which are ?xedly secured by
rivets Ii , l2 to the base of the “Bakelite” molded 10
With the above and other objects in view, as
will hereinafter appear, the invention comprises
' the devices, combinations, and arrangements of
parts hereinafter set forth and illustrated in the
lamp-base screw-shell contact i4 and‘lamp-base
accompanying drawings of certain speci?c em
bodiments of the invention, from which the
surrounds and encloses the springs 9 and the neck
l3’ of the receptacle I3. There is, however,
several features of ‘the invention and the advan
plenty of clearance between, the neck l3’ and
skirt I 6 so that the receptacle l3 and all parts 20
20
tages attained thereby will be readily understood
by those skilled in the art.
_
'
I
In the accompanying drawings, Fig. 1 is a
longitudinal sectional view of. a lamp-socket,
center contact l5 electrically engaged, respective
131, by the rivets H and I2.
15
The socket-switch body i has a skirt 16 which
carried thereby are free to move resiliently in any 1
direction relative to the socket-switch body I.
’ It will be observed in Figs; 1, 6, 7 and 8 that
socket-switch, re?ector and shade assembly em- ' the ends of the springs 9 are squared and are
bodying the invention. Fig. 2 is a left end view
of the device shown in Fig. 1. Fig. 2a is a section
on the line 2L4“, Fig. 2. Fig. 3 is a. view similar
to Fig. 2 with the lens, re?ector and lamp-bulb
removed to show the shade and lamp-socket only.
30 Fig. 4 is an open-end view of the re?ector ele
ment only. Fig. 5 is a face view of the lens
element. Fig. 6 is a perspective view of the base
of the lamp-socket element with its current-con
ducting suspension springs. Figs. 7 and 8 are
sections on the line ‘I, ‘I and 8, 8, respectively,
Fig. 1.
Fig. 9 is a longitudinal sectional view of a
modi?cation of the invention. Fig. 10 is a left
end view of the assembly shown in Fig. 9. i Fig. 11
40 is an end view .of the shade element shown in
Figs. 9 and 10, and Fig. 12 is an end view of the
reflector element shown in Fig. 9.
received'in squared recesses in the body- I and 25
neck i3’, so that such springs are ?xedly an
chored at their opposite ends to the body I and
neck [3' and cannot slip or rotate relatively to
their fastening screws 1 and rivets Ii, l2.
The receptacle and shade element i3 is formed 30
at 120° spaced points within its rim with inwardly
projecting rim-lugs i1, Fig. 3, affording spaced
arcuate ledges ill for the similarly spaced and
out-turned‘ rim-?anges I! of the bell-shaped
sheet-metal re?ector 20 which are clamped 35'
against their respective ledges l8 by the radially
projecting edge-tongues 2i of the glass lens 22
held in place by the spring-wire snap-ring 23
received in grooves 24 in the lugs l'l.
One of the
inwardly projecting rim-lugs I'I has at the ends 40
of its arcuate ledge l8 opposed stop-shoulders l8’,
According to the preferred embodiment of the
Fig. 3, which are engaged by one of the out
t-urned re?ector ?anges l9 and one of the lens
invention, as illustrated in Figs. 1 to 83, inclusive,
edge-tongues II, as shown in Fig. 2a, to prevent
45 the socket-switch comprises a body-member i
rotary slippage of the reflector and lens elements 45 '
and shell 2 which are preferably molded from
“Bakelite” or other similar phenolic condensation
relative to the supporting shade element l3.
The arcuate skirt-portions 20’ of the re?ector
material. The portion of the body I extending
within the shell 2 is' preferably constructed sub
20, intermediate the out-turned ?ange-portions
l9, overlap and snugly engage the arcuate edge
stantially in accordance with the disclosure of
portions 22' of the lens. This construction closes 50
the mouth of the re?ector against ingress of dust
U. S. Patent No. 1,852,365.01? Apr. 5, 1932,‘and
supports a suitable toggle-switch mechanism such
and lint which may otherwise settle upon the .
as disclosed in said last mentioned, patent. Such
a toggle-switch mechanism may include the
inner faces of the lens and reflector.
pivotally movable contact-element 3, the pivoted
The construction provides adequate ventilation
between the shade l3 and re?ector 20. Cooling 55
2
9,128,488
air currents may enter the three segmental ‘spaces
>a,1"lgs.1and2,betweentherimsoi'theshade i8
and lens 22 and pass between the re?ector and
shade to the exit holes II: the lamp ?xture being
customarily used in an upright position, as shown
in said U. 8. Patent No. 2,067,888, with the light
directed downwardly upon the work. The clamp
ll oi’ the last mentioned patented construction
may be sized to ?t and applied'extemally to the
skirt II o! the present socket-switch for the sup
port of the latter.
The combined weight of the lamp 0, shade is,
re?ector 2| and lens 22 is carried by the current
conducting springs I and the inertia of these
15 several elements combined serves to steady the
lamp 0 against vibration; the spring-supported as
sembly being tiltable in any direction or movable
bodily axially relative to the socket-switch body I.
It is, however, ?rmly supported by the springs 9,
tacts, and means to support and conduct electric
current to said springs.
,
2. An electric lighting device comprising a
socket-switch body, a switch mechanism mounted
thereon, a socket-shell enclosing said switch
mechanism,,.a pair 01' outlet current-conductors
carried by said body, a pair 01’ oo-axial current
conducting spiral leaf-springs connected each to
a respective one of said switch-outlet current
conductors, and a lamp-receptacle carried by said
springs and having lamp-base-engaging contacts
electrically connected respectively to said springs.
3. An electric lighting device comprising a
socket-switch body, a switch-mechanism mount- _
- ed thereon, a socket-shell enclosing said switch I5
mechanism, a pair of_ outlet current-conductors
carried by said body, a pair of co-axial current
conducting spiral leaf-springs connected each to
a respective one of said switch-outlet current
alone. u?lnst bodily lateral or axial twisting
conductors, and a lamp-receptacle carried by said
movements.
springs and having lamp-base-engaging contacts
'
In the modi?ed form of the device shown in - electrically connected respectively to said springs,
Figs. 9 to 12, both inclusive, the socket-switch
body 20 and socket-shell 21 carry the same toggle
switchparts3,landl,asshowninFig. 1. The
current-outlet screws II and current-conducting
spiral springs I! are oi’ the same construction as
the like parts oi’ Hg.- 1.
In' the present instance, however, the springs
20 support a screw-base type of lamp receptacle
said socket-switch body having a skirt enclosing
said spiral leaf-springs and spaced from said
lamp-base receptacle.
-
_ 4. An electric lighting device comprising a
socket-switch body, a switch-mechanism mount
ed thereon, a socket-shell enclosing said switch
mechanism, a pair of outlet current-conductors
carried by said body, a pair of co-axial current
II which has no shade-element combined with conducting spiral leaf-springs connected each to
it and carries only the lamp 3|. The neck 32 of a respective one of said switch-outlet current
the sheet-metal shade 83 ?ts snugly upon the ‘ conductors, a-bell-shaped' lamp-receptacle and
skirt ll of the body 2' and is formed near its shade element having a neck-portion‘ supported
rim with a circular seat II for the out-turned by .said springs, and lamp-base-engaging con
120° spaced rim-?anges II of the re?ector 31.
tacts in said neck-portion electrically connected
The re?ector I1 is formed within the ?anges respectively to said springs.
It with seats 88 for the 120° spaced radial tongues
5. An electric lighting device comprising a
I! of the glass lens 40 which is held in place by socket-switch body, a switch-mechanism mount
40 the spring-wire snap-ring ‘I. This snap-ring is ed thereon, a socket-shell enclosing said switch
generally circular in form but has three outer mechanism, a pair of outlet current-conductors
segmental portions H which are received in the carried by said body, a pair of current-conduct
groove 41 of the shade 33 and three inwardly ing springs connected each to a respective one of
o?’set segmental portions 44 which bear facially said switch-outlet current-conductors, a bell
upon the radial tongues 30 of the glass lens 40. shaped lamp-receptacle and shade element hav
In the modi?ed form of the invention the lamp ing a neck-portion supported entirely by said
II and receptacle 3. only are supported by the springs, lamp-base-engaging contacts in said
current-conducting springs 29 which may be neck-portion electrically connected respectively
made correspondingly lighter in weight than the to said springs, and re?ector and lens elements
Springs 0.
a
carried by said shade.
The present construction a?ords a simple, com
6. An electric lighting device ‘comprising a
pact and sturdy yet sensitive shock-absorber for socket-switch body, a switch-mechanism mount
an electric lamp-socket; the lamp being wholly ed thereon, a socket-shell enclosing said switchspring-suspended with no contacting rigid ele
mechanism, a pair of outlet current-conductors
ments to transmit vibration from the supporting carried by said body, a pair of co-axial current
body to the lamp.
-' conducting spiral leaf-springs connected each to
It will be obvious to those skilled in the art that a respective one of said switch-outlet current
the invention may, without departure from its conductors, a bell-shaped lamp-receptacle and
essential attributes, be embodied in various spe
shade element having a neck-portion supported
ci?c forms other than those shown and described, by said springs, lamp-base-engaging contacts in
which latter are to be considered in all respects said neck-portion electrically connected respec
as illustrative oi’ the invention and not restric
- tive; reference being had to the appended claims
rather than to the foregoing description to indi-'
cate the scope of the invention.
Having thus set forth the nature of the inven-
tion, what I claim herein is:
I. In an electric lighting device, a bell-shaped
lamp-shade molded from insulating material and
70 formed with neck and rim portions, lamp-base
engaging electrical contacts mounted within said
neck-portion, a pair of current-conducting-edge
" wise spiraled leaf-springs supporting said shade
to
by its neck and each electrically connected with
a respective one of said lamp-base-engaging con
85
40
45
50
'
‘ tively to said springs, said shade having circum
ferentially spaced inwardly projecting rim-lugs,
and re?ector and lens elements seated upon said
rim-lugs and spaced from said shade.
65
'7. In an electric lighting device, a belly-shaped
lamp-shade having a rim-groove and a rim-seat,
a bell-shaped re?ector having circumferentially'
spaced out-turned rim-?anges in engagement
with said rim-seat, a lens element seated upon
said re?ector and peripherally spaced from said
shade, and a wire snap-ring engaging said lens
and seated in said rim-groove.
8. A supporting body of molded electrical in
sulation material, a pair of current-conductors 75
2,123,483
f3
?xedly mounted therein, a lamp-receptacle hav
arcuate edge-portions and out-turned rim
ing a body of molded electrical insulation ma
flanges, a lens having arcuate'edge-portions and
terial and lamp-base-engaging contacts carried
radial edge-tongues projecting outwardly beyond’
vthereby, and a pair of sheet-metal current-con
its arcuate'edge-portions and disposed in juxta- ‘
ducting leaf-springs of edgewise spiraled form
each ?xed at one end to said supporting body and
position with the out-turned rim-?anges of said
re?ector, and a molded bell-shaped supporting
to a respective one of said current-conductors
shade of electrical insulation material having a
therein and each ?xed at its opposite end to the
body of said lamp-receptacle and to a respective
10 one of said lamp-base-engaging contacts carried
electrical contacts and a rim-portion formed with
seating means for said re?ector rim-?anges and
thereby.
_
neck-portion, ?tted ,with la’mp-base-engaging
lens edge—tongues, there being arcuate vventi
lating opening between said shade and the arcu
9. In a lighting device, a bell-shaped sheet
ate edge-portions of said lens and reflector. ‘
I
metal reflector having at the rim of its skirt arcu
11. In an electric lighting device, a lamp-base’
ate edge-portions and out-turned rim-flanges, a
lens having arcuate edge-portions and radial receptacle having an insulating body and lamp-, 15"
15
edge-tongues projecting outwardly beyond its ar "base-engaging contacts carried thereby, a pair of_
cuate edge-portions and disposed in ju'xtaposir coaxial spiral springs each. formed as an edge
wise spiraled ?at strip of spring metal and each ,
tion with the out-turned rim-?anges of said re
?xedly anchored at one end to said insulating
?ector, and a bell-shaped supporting shade hav
body and electrically connected to a respective 20
20 ing seating means within its rim for said re?ector
rim-flanges and lens edge-tongues, there being one of said lamp-base-engaging contacts, a, sup
arcuate ventilating openings between said shade porting body to which the other end of each of
and the arcuate edge-portions of said lens and said springs is ?xedly anchored, and current-sup
ply means electrically connected to said springs.
- re?ector.
25
10. In a lighting device, a bell-shaped sheet
25
WILFRED O. LANGILLE.
metal re?ector having at the rim of its skirt
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