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Патент USA US2129374

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Sept. 6, 1938.
Filed Aug. 17, 1934
Wu.“ 1900
Patented Sept. 6, 1938
- mc'mrc CIGAR mama '
Arthur A. Johnson, Bridgeport, Conn, assignor to
Automatic Devices Corporation, Bridgeport,
Conn, a corporation of Connecticut
Application August 17.‘ 1934,8eriai No. mimic
a Claim (01; 219-32)
the thermostatic catch become out of order, it
is merely necessary, to discard the old heating
This invention relates to electric cigar-lighters,
and is concerned‘ particularly with the type of
cigar-lighter in which the igniting unit is com
pletely separable and removable from a holding
6 device or base for use.
With such cigar-lighters, the igniting unit is
mounted in or on a holding’device and'has' a
element and substitute a new one, thus saving the
replacement of the igniting unit as a whole.
Other features and advantages will hereinafter 5
In the accompanying drawing—
normal position thereon, wherein an electric cin
Figure l. is alongitudinal sectional view of one
cuit including the heating element is interrupted. form of the cigar-lighter of the present invention, ,
10 To bring the» igniting unit to incandescence for ' showing the igniting unit supported in its normalv “1o
use, it is moved relatively to the holding device non-energizing position.
to ‘close the circuit, and upon becoming incan
Fig. 2 is a similar view, showing the ignitim
descent the igniting unit is removed and the in
unit in energizing position.
candescent heating element is applied to the end
Fig. 3 is an end view of the igniting unit show
15 of a cigar or cigarette to ignite the same.
Heretofore, it has been'proposed to latch the‘
igniting unit in energizing position and retain it
in Figs. 1 and 2.
Fig. 4 is a side elevation ‘of the igniting unit. _
The type of cigar-lighter shown in the accom- _
so until the heating element is ready for use. For
panying drawing is that having. a tube-like hold
this purpose, a bimetallic latch was employed on
ing device or base member ID adapted to extend _
20' the- holding device and in heat-conducting rela
through an aperture in a support, as, for instance, 20
tion with the vheating element so as to become the instrumentaboard ll of an automobile. The
inoperative when the heating element became hot end of the tube ID has threads l2‘, and on the
enough for use, at which time means, usually . portion thereof which extends beyond the instru- »
spring means, became effective to move the ignit
ment board ll there is provided a threaded disk
25 ing unit out of energizing position.
l3 having a ?ange H for engaging the end of the g5
7 An object of the present invention is. to improve
this type of cigar-lighter to make it more accu
rately responsive to the temperature of the heat
ing element, and to this end the present invention
30 provides the bimetallic‘ andthermal responsive
shell Ill. On the rear side of the instrument
board the threaded portion‘ l2 carries a nut l!
which, upon beingtighteneiclamps the instru
ment board between itself and the threaded disk
I3. At its rearend, the holder-tube ID has an 30
latch on the igniting unit rather than on the
inwardly extending.v ?ange lion which is secured
holding device, so that heat from the-latter is
more quickly and accurately transmitted to the
bimetallic latch than was possible with the lat
a‘ disk l'l having a boss Ill. The boss l8 has an
insulator sleeve l9 through which extends a
screw 20, the head of which holds a contact disk ;
35 ter mounted on the holding device.
With the heat-controlled cigar-lighters hereto
fore suggested, should the bimetallic latches be
2| in- placewithin the shell Ill. ,The contact disk1_35
2| is insulated from the-disk H by an insulating
washer 22. The outer ‘end of the screw 20 carries
come inoperativeor otherwise fail to perform . nuts 22 between which a terminal 24 of a current
‘their intended functions, it was necessary to re
supply wire 25 is secured. The innernut 23 is
40 move the holding device which is usually mounted insulated from the end of the boss l8 byan insu- 40
in a permanent position, as, for instance, on“ the lating washer 26..
, dashboard. of an automobile, and substitute a
Thus it will be seen that theshell I0 is me
new holding device with a properly functioning chanically and, electrically connected to the in-' 4
strument board H which is usually connected to
With the device of the present invention, Hone side of a current supply battery by a. ground 45
wherein the thermostatic catch is carried by the and that the contact disk 2! "is insulated from
_ igniting unit, should- the catch fail to function the shell l0 and is normally alive, being. connected
properly, a new igniting unit may‘ be substituted with the current supply wire 25.
for the old.
' '
vAs in this typeof cigar-lighter, the igniting
. thermostaticv catch.
60 ._
According to the present invention, the thermo
staticcatch may be mounted on any convenient
or suitable portion of the igniting unit, but pref
unit of the present invention ?ts the shell l0 and Y50
is slid into the shell to be supported thereby in
normal inactive position. In the form of the in
erably it is mounted on the heating element itself, a vention herein shown, the igniting unit ‘comprises
and since the’ heating element is removably
56 mounted on the body of the igniting unit, should
a body portion made up of a tubular‘ portion 21
and a knobportion 28, either of which‘ may be 55
made 01' metal or insulating material, as desired
, user and the heating coil can be applied to the
the portion 21 being shown as made of nonmetal
end oi’ a cigar or cigarette to ignite the same.
lic material while the portion 28 is shown as made
In the event that the bimetallic latches 38-38
01 metal.
become inoperative, it is merely necessary to re- '
At ‘the inner end of the body of the igniting move the igniting unit from the holding device
unit, there is removably mounted a heating ele
as though it were to be used, and, after unscrew
ment 29. This comprises a plug-like portion 30 ing the heating unit from the portion 21 of the
which is screw-threaded into the inner end of
igniting unit body, the damaged heating element
the tubular portion 21, and mounted on the por
10 tion 30 is a resistance coil II, which, upon being
may be discarded and a new one substituted
brought to incandescence, is applied to the end
Even in such cases where the heating element
is not removable from the body portion 01! the
0! a cigar or cigarette to ignite the same.
indicated in Fig. 3, the heating coil is in the form
of a-ribbon spirally wound and has its inner end
15 secured to a stud 32, while its outer end is has
tened to a cupped disk It and is in metallic and
electrical contact therewith and secured to the
igniting unit, the provision or the heat-responsive
latches on the igniting unit is advantageous over
the prior proposals where latches were carried by
the holding device. For, in case the heat-respon
sive latch should become inoperative, it would not
portion 30 by the stud 82 but. insulated therefrom. be necessary to disconnect the holding device,
The inner end of the cupped disk 33 has a ?ange either electrically and mechanically,irom the in
34 located in alignment with a ?ange ll of the ' strument board, but merely necessary to discard
contact disk 2|. Hence, when‘ the igniting unit the igniting unit and substitute a new one having
is moved from the position shown in Fig. 1 to the thermostatic element in proper working order.
that shown in Fig. 2, the ?ange 34 engages the
In the use of the device, it may be, that due to
Ila-Die II and current is conducted through the delay in the application 01 the heating element
part 33 to the outer end oi! the heating coil, and to the cigar end, the iormer is not sumcientiy in
from thence through the coil to the stud 32 and candescent to ignite the cigar; yet, the ther
plug-like portion I0 01' the heating element.
mostatic latches 39 may not have returned to
Normally, the portion ll is out 01' electrical .en
gripping or latching position. To permit the
gagement with the shell ill, but when the igniting I user to again cause the heating element to become
unit is moved from the position shown in Fig. 1' incandescent or to bring it to a higher degree of
to that shown in Fig. 2, the periphery it of the incandescence than is controlled by the ther
portion It moves into contact with a tongue '31 mostatic latches 3!, the cooperating contacts 35
lanced from the shell ll and bent inwardly into . on the holding device and 34 on the heating ele
position to engage it, and thus the circuit is com
ment may be made to engage independently oi the
pleted through the heating element and the thermostatic latch 39 by the operator holding
the igniting unit in energizing position by hand.
According to the present invention, the igniting
unit and heating element are held in the'position
shown inrig. 2, that is to say, in energizing posi
tion, until the coil becomes incandescent and
ready for/use, by a thermostatically-controlled
llant?h mounted on and carried by the igniting
Variations and - modi?cations may be made
within the scope of this invention and portions oi .
the improvements'may be used without others.
Having thus described the invention, what is
claimed as new and for which it isv desired to
obtain Letters-Patent, is:
1. In a cigar-lighter, a base member; an ig
In the term of the invention shown herein, this‘ niting unit normally supported on but completely
45 is accomplished by providing on the heating ele
removable from the base member for use; a heat 45
ment 22 a bimetallic strip ll, the ends of which ing element mounted on the igniting unit for
are bent so as to form detents 38. The strip 3| is
provided with a central apertured portion through
which the stud tg'extends and is held in place in
contact with the"cupped disk‘ ll which carries
the. heating element.
When the igniting unit is ‘moved from the posi
tion shown in Fig. 1 to that shown in Fig. 2, the
detent portions l. of the strip I! snap over the
?ange 35 on the ntact disk 2| and thus retain
the heating element and igniting unit in the posi
tion shown in Fig. 2, against the tendency of a
spring ll engaging-a ?ange on a sleeve‘ II on the
other side to return the igniting unit to non
energizing position. ‘J The sleeve II has a ?ange l2
engaging the disk i1 ‘3 so that when the igniting
unit is pushed inuiime position shown in Fig. 2,
the spring 0 is.compressed.
convenient removal. and replacement; a circuit
(or conducting current to said heating element;
manually operable means for closing said cir
cuit to the heating element; and means carried
by the removable heating element in permanent
association therewith and responsive to the tem
perature oi the heating element for opening said
2. In a device of the class described, a base
member; an igniting unit supported on said base
member‘ for complete separation and removal ior
use; an electrical heating coil on said unit; means
for moving said unit to an energizing position
in which‘said coil is energized;v means tending
to withdraw ‘said unit from said energizing position; and a thermostatic element carried by and
During the heating oi’ the resistance coll, 'the permanently associated with the igniting unit
heat is conducted through the cupped disk ll to and responsive to the heating of said coil for
controlling the action of said withdrawing means.
the bimetallic strip II, and when‘ the heating ele
3. In a device of ‘the class dmcribed, a base
ment. becomes incandescent the expansion oi the
bimetallic strip is such that the detent portions ‘member; a plug supported on said base member
3| move from the positions shown in iull~lines in
70. Fig. 4 tov those shown in dotted lines, with the
result that the ?ange ll of the contact disk has
disengaged and thespring 40 is allowed to return
for complete removal for use; an electrical heat
ing coil on said plug; means for moving said
the 'eating element and igniting unit to the posi
tiof shown in Fig. 1,‘at which time the igniting
plug to an‘ energizing position in which said coll
is'energized; means tending to withdraw said
plug from said ‘energizing position; and a ther
mostatic element in permanent metallic and 618C?‘
unit is removed from the
trical engagement with said heating coil and re- [I
device by the
sponsive to the heating of said coil for controlling
the action of said withdrawing means.
4. In a heating element for cigar lighters hav
ing an igniting unit of the type removable from
been brought to incandescence, said last-named
a holding device for use; a manually movable
support; a resistance coil mounted on the sup
port; and a bimetallic strip secured to and car
means including a heat-responsive latch car
ried by the support permanently in heat-con
ducting relation with the resistance coil and hav
10 ing a latch portion formed on the end thereof._
5. In a heating element for cigar lighters hav
ing an igniting unit of the type removable from
, a holding device for use; a support provided with
a hand grip at one end; a resistance coil mount
descence for use; and cooperating means on the
igniting unit and the base member to maintain
the circuit closed until the heating element has
ed on the support; a bimetallic strip carried by
the support and permanently secured in heat
conducting relation with the resistance coil and
having a latch portion formed on the end there
of; and means carried by the support for mount
ing the heating element on an igniting unit and
removing the Same therefrom by hand without
ried by the igniting unit in permanent associa
tion with the heating element and arranged to
open the circuit through the heating element
when the latter attains a predetermined tempera
ture regardless of the particular base member 10
with which the igniting unit at that time is
'7. In a cigar lighter, a base member; an ignit
ing unit normally supported on but completely
removable from the base member for use; a heat
ing element mounted on the igniting unit; a cir
cuit for conducting current to said heating ele
ment; manually operable means for closing said
circuit to the heating element; and means car
ried by the heating element in permanent asso 20
ciation therewith responsive to the temperature
the use of tools.
6. In a cigar lighter, a base member; an ignit
of the heating element for opening the circuit.
8. A manually operable igniting unit compris
ing unit normally supported on and completely
removable from the base member for use, said
mounted on one end thereof and a bimetallic
25 igniting unit being adapted to be disassociated
ing an elongated body having a heating element
latch means clamped between the end of the body
member and heating element and in heat-con
other like base member; a heating element car- ' ducting relation with the heating element and
extending forwardly thereof for engagement with
ried on the igniting unit; a circuit for conduct
ing current to said heating element including a contact for completing a circuit through that 30
a cooperating contact means on the base and element.
igniting unit adapted to be engaged when it is
from the base member and associated with an
desired to bring the heating element to incan
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