Aug. 11,
THERMOSTATIC CONTROLLED
'
S. HARPER_
HAIR CURLERS, COMBS, AND
v ' IRONS
Original Filed Márch 21, 1946
2
I‘;
" ¡ '
22
el
.
2 Sheets-Sheet I
15
INVENTOR.
SOLOMON HARPER.
BY
, Pau! A.Tcdboï
Aug. 11, 1953
S. HARF’EFÉ
2,648,75 7
THERMOSTATIC CONTROLLED HAIR CURLERS, comas, AND IRONS
“0rigir.1al Filed Mai‘ch 2_1, 1946
L
2 Sheets-Sheet 2
_.:
on _ . _
BYSOLOMON 'HKï5FÉR.
ATTORNEY.
2,648,757
Ï’atented Aug. ll, 1953
UNITED STATES PATENT OFFICE‘.
2,648,7«57
THERMOSTATIC CONTROLLED HAIR
CURLERS, COMBS, AND IRONS
Solomon Harper, New York, N. Y., assignor of ten
per cent to Harold Watkiss, New York, N. Y.
Original application March 21, 1946, Serial,No.
655,974. Divided and this application October
24, 1951, Serial No. 252,922
17 Claims. (Cl. 219-24)
1
My invention relates to hand operated elec
~ trio
heating
devices
such
as
hair
2
ance coils in an electrical heater of hair-treat
ing implements to prevent an are.
curlers,
An electrical heater consisting of one or more
straighteners, soldering irons, etc., and particu
heating coils, one or both of which may be opened
larly to the regulation control of the heat (this Ül or closed by an electrical thermostat and also by
is a division of application Serial Number 655,
974, ?led under the title of Hand Appliance
Heater Control, ?led March 21, 1946), and has
’ among its purposes and objects to provide:
' An improved means by which the temperatures
of the member heated electrically is maintained
semi-automatically through the circuit con
nected through an automatic thermostat de
manually operated switch.
10 stat, connected in series with one or more re
‘ signed to cut off the electric circuit.
An improved means by Which the heated mem
'. ber is simultaneously heated by a separate elec
trical circuit not connected through the ther
'
'
An electrical heater for hair-treating imple
ments whereby the temperature may be evenly
maintained by an electrically operated thermo
mostat.
Means by which the electrical current and heat
sistance coils.
Means by which a thermostat may be placed
adjacent to the end of an electrical heater and
to open and close an electrical circuit of a hair
treating implement.
Means by Which an electrically operated ther
mostat may be caused to operate by the heater
of hair-treating_ implements by moving the
heated part closer to the thermostat.
provided in one circuit to the heated member 20
Auxiliary means by which a thermostat, con
may be equal, less or higher than the heat to
trolling the temperature of hair-treating imple
the other members.
ments maybe caused to operate quicker or slower
Means for two circuits to operate independ
without the use of an adjusting screw.
'
ently as a means for heating the heater member
Auxiliary means such as holes, slots, or other
and to cause the temperature to rise or fall to a 25 types of opening in the handle of a hair-treat
pre-determined degree.
ing implement controlled by a thermostat.
'
An improved device whereby mechanical and
A series of auxiliary metal collars of various
electrical simplicity in design is so arranged to
lengths and slidable on the heated chamber of a
~ increase the ef?ciency and heat-maintaining
hair-treating implement for transferring or con
characteristics of the heater.
ducting additional heat to a thermostat cover.
Means by which the temperature in the hair 30
Auxiliary collars to transfer heat to a thermo
by curling, —
treating implement may be altered
stat ina hair-treating implement handle when
— waving, drying, tinting, straightening, baking as
' desired by the operator.
a short or long hair-treating implement is’ used.
A Auxiliary collars to which a. long or short
pressing
part may be attached when the hair
35
imately temperature to be obtained When part
Means to enable the operator to know approx
treating implement is used for pressing or curl
or all the current is connected to the heater.
Means to indicate the temperature beginning
at low, through to medium and high to enable
' the operator to know the approximate tempera
ing hair.
V
A
Means by which a cover tube may be placed
over the hair-treating implement heater to pro
40 vide means for using larger size combs or curler
ture of the heater and to adjust it.
attachments to reduce the temperature ofthe
Means by which the thermostat controlling the
‘ attachment.
opening and closing of one of the circuits may
An electrical heated tube for hair-treatïng im
' be the only means for opening and closing both
plements which is detachable from the handle
of the circuits.
Means by which two independent electrical cir 45 by means of set screws and bushings in a han
dle holding a thermostat.
= cuits ina heater may be connected to the line
An electrically heated comb with a hollow back
permanently by Closing the electrical gap of a ’V and
short teeth made up of a low heat conduct
A thermostat in one of the circuits.
ing material to prevent the tip end of the teeth
Means by Which an electrically operated ther
from becoming too hot.
mostat may be used. to control the electric cur 50
,An electrically heated comb with a bow1ed out
~~ rent to one or more heater resistance coils in a
half back which can be secured to an electri
hair-treating implement.
An electrical capacitor connected across the
: terminal points of an electrical thermostat con—
' trolling the temperature of one or more resist
cally heated unit which is controlled by an ad
justable thermostat.
55
~
~
A convenient thermostatically controlled elec
3
2,648,757
tric heater for hair-treating implements such as
combs, curlers, wavers, crimpers, dryers and
hair-straightening devices.
Electric conduits and handles for electrical
hair-treating and other implements such as
soldering irons, curlers and other useful appli
ances Which Will permit the heating chamber of
the heater to be secured to the conduits in the
handle.
A handle for hair-treating implements which
may not be removed easily from:over:a.thermo—
stat casing secured to the end of a bushing con
necting the heater.
A handle for hair-treating imple’ments ¿which
will not become overheated and to provide air
4
The size and shape of the parts which may be
applied to my heating device with its handle and
regulating mechanism may vary to suit the
variety of uses to which it may be applied.
The demand for accuracy in regulating and
,maintaining the temperature _of?hand appliances
and particularly those which are used ¿in beauty
culture and hair dressing and also fur glaziers
chas increased with their increased use and it is
desirable, not only to shut the heat oiï to pre
»vent.overheating but also be able to accurately
set e-the device at any one of several degrees of
heat to suit the nature of the work to be per
formed ~and ja.ls,o to suit the type of hair being
T treated.
holes in the handle which may be opened or
7;Sol;dering iron‘s and similar devices which do
closed.
-not ordinarily require accurate regulation may
Means by which electric current may be
‘be improved‘by such regulation.
caused to ?ow into an electric heater through or
ÏI{hermostats which may be set to control
around a thermostat and the amount of current 530 maximum heat are reduced in their useful life
¿toibe reduced and not a1lcut off when—the ther
mostat opens.
,«Meansto connect a, higher or lower resistance
,linearound the thermostat directly to the heater
,unit, thereb_y permitti—ng a reduced current to
?ow in the heater when the thermostat is
;_Ql3&?6d.
}A three wire resistance plug in the electric
¿cord ¿to the lines ;supplying the current to an
.bycontinuously turning on and shutting off the
electric .circuits which they control so ;that it
;becomes desirable to provide additional means
;of regulation of heat to overcome the necessity
. of frequent operation of the thermostat and to
,,this end regulating means of improvement is
ídirected.
Referr_ing to the drawings, the construction and
_._operation of my device may be.better understood
electrical hair-treating implement in such a Way :‘á ,_by a study of the details of this disclosure.
as to cause the current to be variedslightly.
I have provided a handle l of heat-insulating
:I-accomplish these and other objects by the
üconstructionrherein described and shown in the
:accqompanying drawing-s iorming a part thereof
in which:
«.Fig. ¡1 vi\s«a longitudinal section of the handle
:and;working parts within it.
<por poor heatconducting material in which the
concluit or positive ,wires 2 or ~2' and negative
¡.wire ~3 .—are brought from the source of electric
,purrent .which maybe in the form of a plug-in
,ycord ¡Land then divided into three wires, 2, .2’. 3
hereinafter more fully described; the natureand
Fig. -2 is atransverse section at 2—-—2 Figs. 1
and '14.
._use of electric yplugs are so common and . so gen
LFigs. 4,;_5, :6,»7, ¿8, 9, l0,-and »11.are electr1c dra
the handle l after entering its otherwise free_end
:5 by the.knot._6 .in the cord and shoulder ,1,‘thereby
erally known as to require no detailed descrip
¿Fig. —3 ¡is ¿a transverse section at 3——3 Figs. 1 <_~ ,;tion. The cord li ¿may be ?rmly secured within
grams of ¿.circuits which may be used in my de
:V_‘ÍC_8.
,z_preventing unusualjerks orpulling for.disturb—
ing-theconnection8 to the interior parts, includ
:F_ig. 12 is an elevation of my device showing a ¿.¿;¿ ing the capacitor 9, as wellas theother internal
spring «pressed appliance in relation to the : ;connections within the handle l.
theater.
'
The capacitor may be connected with the switch
¡Fig. :1r3 ;is an;elevation of a grip pressed apph
"¡lil and _ïshu_nted around the :thermostat .I l, —as
v ance;in relation totheheater.
shown in the wiring ~diagram in Fig. 4 of the
~ Eig._;14;is-an elevation of my device.
,F!ig. 15 is a section -at l,5—l5 Figs. 1 and 14.
Fig. 16¡is a;section at l6—l76 Figs. 71 and 14.
;Fig. ¿17;is a longitudinal section of a plug-in
-;resister.
Eig.;;l8¿isya transverse section at l8-—l8 Fig- 19- ,Fig. 1.9
, ¿n elevation showing a presser.
¿drawin_gs,gin which two pairs:of,heating,elements
,i,2 and .l—3 :are shown. The heating elements .l2
:are connected to the thermostat, ‘switch, and
capacitor and may be of,a greater capacity than
‘the heating elements ,l.3 which may beperma
_-_nently heated. _‘I’he.—_heating plug v l 5 which divides
the ¿two positive circuits to the pairs of heating
.»,elements ¡2 in which, for instance, one circuit
gas above described may ¿have the elements l2,
:S_i;milar ¿reference characters —refer to similar
y! Land-switch -Ill -in series in the posi
:p,a_rts throughout the several views of the draw 60 :_thermostat
tive wire l2, and this \pa—ír of heating elements
—ings and in the speci?cations to follow.
~may beconnectedand ‘further regulated by the
Í have limited the drawings and detailed dis
~:»1:>osi_tivewirei2’ and the resistance l4 of the plug
»closurezto-jhand appliances such as heated combs,
v¿l<5; =:b_.0th circuits may have as common negative
.curl‘ingtïirons, ¿andjhair pressers and straighteners
wire 3, thus requiring but 3 Wires, 2, 2' and 3
randïfu—r glazers} I do not wish to ¿be limited to the 65 between
the handle vl and plug [.5 forming the
use “nor wish my drawings and the details of
plug-inucord fil~ The—:heating elements may:als0
«construction ‘:’&O be considered as limitin_g the
Fig. 20 is a fragmentary enlarged longitudi
;nalsectionshowing thethermostat.
¡scope ¿of ¡my ;invention, but rather to illustrate
gone of—:th_e embodiments of the dunderlyingprin
ciples of my invention which »is.setuforth ..1n the -
be connected to wires 2 and—3.
It will be noted-thatthe switch 'l0—and thermo
-stat ll may serve to control one of the pairs of
;appended,claims. To thoseskilledin theart to:
"heating elements and ‘is particularly useful in
'«Which may »inyention zpertains, it will be obvious
, ¿that the construction herein;disclosed in detail
may be modi?ed in many ways to suit my.device
7~ being manipulated and is in use; also that the
._to ,the—;many uses to which it is .adapted.
causing the desired control while my device is
other of the ,pairs of ,heating elements maybe
_l;ept on_continuously to maintain the desired heat
‘2,648,757
5
6
when my device is not in use and being manip
ulated.
somewhat similar circuit for two heaters in which
.
one of the circuits only is controlled by the
thermostat and both circuits are controlled by
the switch.
Fig. 9 shows a circuit for two heaters, both of
which are controlled by the thermostat and
I have provided an additional means of con
trolling the temperature of my device comprising
a slidable heat transmitting sleeve l9 and a fur
ther adjustment of heat control by ventilation
holes IT near the thermostat which is eiïected by
the conduction of heat through the tube 20 which
Fig. 10 shows a plurality of heaters controlled
surrounds and is heated by the pairs of heating
by a thermostat which may open one circuit,
elements l2 and ¡3.
10 then by further movement, another circuit, and
The several means of controlling the tempera
still another circuit after further movement, thus
ture are correlated when so combined, make it
controlling a plurality of heaters so that one after
possible to provide the desired temperature for
switch.
.
.
.
the other will be added or shut off in the heater
treating hair, either for curling or straightenïng
the hair, even though one person’s hair may 15 of my device. This circuit is desirable for water
heaters and sterilizers, also for combs.
_
require a much greater heat in its treatment than
Fig. 11 shows a, circuit particularly suited to
~ the hair of another person requires.
combs and is somewhat similar to the circuit
The thermostat may be adjustea to break open
shown in Fig. 6. The circuit shown in Fig. 11 is
the circuit in which it is located at a wide range
»
of temperatures and the ,adjustment 21 which 20 suited to alternating current.’
The variousbircuits, diagrammatically shown
may be a screw or other means is provided with
in Figs. 4, 5, 6, 7, 8, 9, 10 and 11 illustrate some
a calibrated dial 22 and a pointer 23 permitting
of those more commonly used in the regulation
the thermostat l l to be accurately set.
' of the heat in the heater or tube 20, or that part
The frequent or intermittent opening and clos
of the tube proiecting from the handle l .
ing of the circuit in which the thermostat is 25
The heater as above described may be con
located has been found undesirable not only
trolled by the switch, thermostat, and by resist
because such frequent operation shortens the life
ance, variable or adjustable, or a rheostat, all of
of the thermostat but also because the heat
which
are electrical, and by a movable conduct
change is also intermittent and not constant.
ing sleeve, and also by ventilating to change the
I overcome this objection by the use of my 30
air within the handle and particularly within that
conducting or heat transmitting sleeve ¡9 which
part of the handle near the end from which the
may be secured at the desired position on the
heater projects. The zone or space surrounding
conducting tube 25 by the set screws 24 and at
the thermostat may be known as the thermostat
the position for a guage marking scale near No.
chamber, as it is to be noted that heat is con
25 which facilitates the desired adjustment for 35 ducted to he chamber rather than directly to the
the varying requirements of heat, and such
expansion members of the thermostat.
adjustment for the varying requirements of heat,
This characteristic of indirect application of
and such adjustment substantially reduces the
heat from the heater to the thermostat provides
frequency of operation of the thermostat.
the means of regulation independent of the elec
The ventilating holes 26 in ‘the handle and 40 trical control of heat to be most eiïective. The
ventilating holes in the sleeve IS, as well as the
sleeve and ventilation near the thermostat pro
vides an independent means as related to the
ventilating holes in the heat conducting tube 2€],
may all be brought into full or partial alignment
which the sleeve l9v contacts the
minimum of heat from the several heating ele
Aments to the thermostat which causes the heat
to be increased to the maximum before the ther
electric control of heat.
The manually adjusted sleve ¡9 may, of course,
' at a position at
be modi?ed in numerous ways to change the
amount of heat carried by conduction to increase
or decrease the heat carried by conduction in
the material of the tube 20. The sleeve may be
mostat is effected. Conversely, the sleeve and
ventilating holes may be set to carry the heat
revolved to change the air ?ow to the outside
‘ from the heating elements to the thermostat more 50 wall of the thermostat holder or a separate sleeve,
freely, thereby causing it to operate sooner and
or other means may be used to regulate the air
to reduce the maximum temperature of my device.
The resistance l4 may be made adjustable in
?ow independent of the movement of the
sleeve IS.
The tube 20 may be withdrawn from the handle
by unscrewing the set screw 28.
The comb may be removed and replaced with
the presser 28" (Fig. 18) by removing the pívot
pins 29 which engage the clamp member 30 se
curing these and other movable appliances to the
the form of a rheostat, or the third wire 2’ may
be made to provide the desired resistance.
The capacitor 9 may be provided in a shunt 2-8’
around the thermostat for direct current and to
‘ facilitate my device for using either direct or
alternating current. I have provided the set
switch 2'!’ which may connect or disconnect the "
capacitor.
The circuit most commonly used and which is
illustrated in the several views of my device is
' shown in Fig. 4 of the drawings.
handle l.
60
‘
‘
The ?xed part 3| and various other appliances
to be heated may be provided with a heating
sleeve 33 which may be slipped over the heater.
The movable and removable parts such as
Fig, 5 shows a circuit for alternating current 65 presser 28" and comb 16 may be locked in con
~ Wh1ch is best suited to curling irons which ordi
tact with the heated ?xed or stationary part or
nar1ly require less heat than thermostat ll is
the heater by looking screw 34 which prevents
provided with a resistance in the shunt around
the movement of the movable handle 35 which
it and this circuit may be kept on, thus heating
may be detachably secured to the stirrup 36 which
‘ the heater 12 while the heater 13 may be switched'
A straddles the clamp member 33 and the handle
on intermittently as is desired.
I and to which the movable parts ¡6 are secured.
Fíg. 6 shows circuits for direct current and par
The stirrup may be provided with the threaded
ticularly suited to use for combs and pressers.'
stud 31 which engages the threaded end 38 of
‘ Fig. 7 shows a, circuit suitable fora single heater
- and for alternating current. and Fig. 8 shows a‘775 the movable handle to detachably secure this
handle to the stirrup and the movable parts such
(GI
as ¿the comb. The handle ;may thus «be removed
—:o.ut of the operatorïs way :when rit .is not desired.
The :end 39 of thetube2il ;ris closed water ‘tight
to prevent leakage into the heating parts 'i‘2 and
means being aiiïected:by the ¿amount :of ‘heatcon
ducted by the tube, said air, and said sleeve,rsaid
thermostatic means :a?ecting said electrical con
trol :of said<electric heating means andsaid elec
tric means affecting the temperature of saidztube
l:—3 so that my device maybe used to :heat water
and also to sterilize the parts, such as the :comb
and said sleeve.
5,. .‘In ¿a portable heater, according to claim .3,
L?
or the presser, etc.
‘The :switch:operat0r—»t? may be removed by re
moving the operator plate 4.1 when remov;ïng the
ztube 20. The condenser connections 42 and ‘¡13
¿may be :secured to and extended beyond the open
end4.4 of the tube 2'0" to engage the contact pieces
A5:and:ll6 of the set.switch ‘21’.
In addition to the ventilation holes H for ad
justing the operation of the :thermostat, the
handle .l and the ¿tube 220 near its open end are
:provided the :handle ventilating .ducts .41 and the
tube ,openings 54.8 which not only ventilate the
said tube affected by the length of said sleeve,
a ¿collar of required length, thíckness and diam
eter movable on said tube to supplement the
length of said sleeve and transfer heat to said
sleeve.
-6. .In :a portable heater, according to claim .3,
a slip-over flat face :attachment heated by said
heating tube .andmovable on said tube and from
said tube.
r7. In a heating device, according to claim 2,
:a stationary handle having ventilatïng holes
near one end of said sleeve, and said handlehav—
interior of the tube ‘to conduct heat from its
ing air ventilating holes near said tube, a capaci
,20
‘The
~switch
capacitor
and
.heated end or heater.
tor and a manual switch near one end of said
:thehandle are thus cooled.
sleeve, said ventilating holes and space inside
FI have not shown the many applianccs which
said handle being .obstructed by said manual
:may ‘be detachably secured to and heated by my
switch and said capacitor; thereby, a?'ecting the
device to suit the many uses to which it .is suited.
free ciroulation of Cooling air, causing said han
¡My invention is set _forth in the appended y
dle and said thermostatic means’ heat to become
higher, said switch and capacitor afiecting the
-claims.
¿I claim:
heat (of said handle in proportion to number of
:1. In a.heating device, a heat conducting tube,
ventilating holes obstructed in said handle, said
electric heating means.in saidtube, thermostatic
sleeve movable under said holes near said man
.30
means ‘heated ‘by surrounding air affected by the
ual switch and atfecting the temperature of said
heat from said tube, said thermostatic means
switch.
v._electrically controlling the heat of said tube and
8. In a heating device according to claim l,
said heating means and a sleeve movable on said
said heat conducting tube having a grooved back
tube to control the temperature thereoi by
comb of the class described adjacent to said tube
changing the conduction of heat :from the por- 1.a and absorbing heat from —saídtu—be, and -affecting
tion of the tube surrounding said heating means
the heat of said tube in proportionto the length
and by admitting air to the tube.
».oi said comb;contacting said tube and the dis
‘2. In a heating device, a heat conducting tube,
tance said sleeve is from one end of said comb
electric heating means-in said tube, thermostatic
when said ¿comb is :closedon said tube, and means
means heated by surrounding air affected by the
forswinging said comb with respect to said tube.
heat from said tube, said thermostatic means
9. In a heating device according to claim 4, a
electrica—lly .controlling the heat of said tube and
pluralit;y of electric conducting means passing
said heating means and assleeve movable on said
through said sleeve longitudinally, capacitor arc
tube, said.sleeve having air ventilating holes and
reducing means, and manual hand operated ad
said tube having vent holes which may register ~ justable means for said thermostatic.means, said
or .‘be shut '0iï by the movement of said sleeve.
manual hand operated adjustable means being
3. In a-portable heater, a heat conducting tube
.on the outside circumierence of said handle and
having electric heating means in one end and
removed .from contact With the surfaces of said
electric heat controlling means near the other
sleeve and said tube, said sleeve movable longi
end of said tube, and a sleeve movable on said 50 tudinally over said electric conducting means,
tube to change the amount of heat conducted
said tube heating said electric conducting means,
:fromthe heated end zof said tube to the heat con
and said tube heating said sleeve and said sleeve
trolling means of said tube, said heat controlling
heating said electric conducting means, said
means controlled by the air surrounding it and
sleeve.andsaid conducting means cooled by said
said sleeve controlling the conduction of heat
air ventilating.hdles, said manual hand operated
along said tube and also control‘ling the tem
adjnstable heat control means having means to
perature of the air around said'heatcontrollïng
contact said thermostatic means, said heat con
‘means by the admission and mixture of external
trol means having heat indicating means, said
air to and in said tube.
.
sleeve, said electric conducting means and said
4. In a heating device according to claim .2 60 cool air ventilating holes and said capacitor aro
said air‘being adjusted according to the position
reducing means and the position of all of the
of said sleeve on said tube and the number of
heat adjusting means being joint heat regulat
holes registered and not registered, a stationary
‘ing means for said electric heating means pro—
handle with ventilating holes through walls near
portional to the amount of heat from said elec
said sleeve, said handle extending over oneend
tric heating means, said electric conducting
of said sleeve, said sleeve movable longitudinally
further into said handle to open and close said
ventilatïng holes in the end of said handle, said
holes in said handle registering simultaneously
means'having‘leads connected to the ends of said
capacitor means to retard said arc, one of said
electric conducting means connected in series
with saidthermostatic means and said conduct
with said holes in said sleeve and permitting 70 ing means connected to a source of power.
ventilated coolair to contact said sleeve and said
10. In a heating device according to claim 4,
thermostatic means, said thermostatic means
a manual disconnecting and connecting means
being aiïected by the movement of said sleeve
separated from said sleeve by said capacitor are
and the position of said tube on said handle and
.reducing
means, said manual switch and said
the number of holes registered, said thermostatic 75
2,648,757
10
thermostatic means, said disconnecting and
15. In a heating device according to claim 3,
connecting means having means for connections
to said electric conductors and said are reduc
said sleeve being adapted to move longitudinally,
remain stationary and be revolved within one end
of said handle to regulate said air ventilation.
16. In a heating device according to claim 9,
said sleeve being adapted to revolve and move
longitudinally in said handle to effect the regu
ing means, said disconnecting and connecting
means a?ecting said aro reducing means.
11. In a heating device according to claim 4,
said comb having two pivoting positions provid
ing for attaching said comb, and having handle
lation of said air supplemental to said joint heat
means near one respective side and near one end
regulating means said sleeve being adaptable and
of said sleeve to cause said comb to move in re 10 jointly a?ecting the control of said electric
verse directions according to movement of said
means in conjunction with rheostatic and ad
justable resistance means removed from near
handle when placed on an opposite side near one
side and near one end of said sleeve.
12. In a heating device according to claim —í«,
said comb having means for pressing hair be 15
said sleeve and said electric power reducing
means.
17. In a heating device according to claim 8,
said handle and said sleeve being adaptable to
aiïect the said attachments including soldering
means proportionally to said longitudinal move
having adjustable means for permitting said
ment, a number of ventilation holes in said tube,
hair to be straightened and baked with heat con 20 said sleeve and said handle.
trolled by said joint heat regulating means pro
portionally to movement of said comb to press
SOLOMON HARPER_
and for curling and straightening said hair.
13. In a heating device according to claim 9,
References Cited in the ?le of this patent
a power reducing means connected to and in
UNITED STATES PATENTS
series With one of said electric conducting means
Number
Name
Date
passing longitudinally thru said sleeve, said
1,416,544
Barzen __________ __ May 16, 1922
power reducing means affecting said joint heat
1,446,653
Murphy _________ __ Feb. 27, 1923
regulating means, said reducing means being re
tween said back of
comb and means for
curling hair between said back and around curl
ing means, said comb and said curling means
placeable.
14. In a heating device according to claim 3,
said sleeve being adapted to revolve within said
handle and to a?ect the ?ow of air to and from
said tube aiïecting the heat inside said handle.
30
1,772,002
1,855,707
Harper ___________ __ Aug. 5, 1930
De Langie ________ __ Aug. 26, 1932
2,106,755
Obermaier ........ __ Feb. 1, 1938