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Патент USA US2406494

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Aul- 27, 1946-
n. K. FERRIS ‘
2,406,494 '
Filed lay 14, 1943
2 Sheets-Shed; J.
Aug; 27, 1946.
Filed May 14, 1943
2 Sheets-Sheet 2
.1 1
11/1/ /1
Patented Aug. 27, 1946
2,406,494 .
Donald k. Ferris, Dayton, Ohio, assignor to Gen
eral Motors Corporation, Dayton, Ohio, a cor
poration of Delaware
Application May 14, 1943, Serial No. 486,932 _
4 Claims. (Cl. 34-82)
This invention relates to domestic appliance,
and more particularly to a clothes drier.
An object of this invention is to provide a
clothes drier in which a source of radiant heat
rays, such as infra-red rays, is provided, together
with means for focusing said rays into the main
body of tum-bling clothes in order to dry the
Another object of this invention isto provide a
air past the tumbling clothes. Such means may
take the form of a blower'l4, which draws air
into the louvers I5, past the blower l4 into the
duct I6, past the inlet IBa from whence the a
stream flows into and around the drum I2, past
the tumbling clothes therein. From thence the
air may circulate past the casing outlet Ila into
the duct I1 and out through the duct outlets I8
and I9.
clothes drier in which a source of radiant heat
Preferably the air stream is introduced into the
rays is provided, together with a stream of air,
casing II near the top at the inlet 16a and is re
and with a means for tumbling clothes, in the
moved near the bottom of the casing II at the
path of the stream of air.
outlet I‘la. By this construction the air which
Further objects and advantages of the present
has been slightly heated by the lamps I0 and
invention will be apparent from the following de 15 which tends to rise by convection to the top of
scription, reference being had to the accompany
easing II is entrapped by the forced air stream
ing drawings, wherein a preferred form of the
at I60: and is carried past the tumbling clothes
present invention is clearly shown.
' into the outlet Ila. This slightly heated air, to
In the drawings:
gether with the large amount of heat introduced
Fig. 1 is a side elevation of a clothes drier, with 20 directly into the clothes by radiation, quickly
dries the clothes.
Fig. 2 is a vertical cross-sectional view of the
The duct outlet I8 may be provided with a re
clothes drier taken substantially along the line
movable screen 20. The screen 20 acts as a lint
one side of the casing removed;
2-2 of Fig. 4;
trap, which prevents lint from ?ying into the
Fig. 3 is a vertical cross-sectional view taken 25 room in which the drier is located. Should the
along the line 3-—-3 of Fig. 1; and
screen 20 become over-clogged, the stream of air
Fig. 4 is a vertical cross-sectional view taken
is free to make a sharpv upward turn and to ?ow
along the line 4-4 of Fig. 2.
A clothes drier according to this invention .is
' out of the unscreened outlet I9.
Means are provided for ozonizing the stream
provided with a source of radiant heat rays, which 30 of air before it comes in contact with the tum
are directed against. the clothes to be dried.
bling clothes. For this purpose an ozonizer, di
These clothes are tumbled in front of the rays and
agrammatically indicated at 2|, may be provided
air is circulated past the clothes. By this con
struction“substantially all of the heat energy is
directed on the clothes themselves, and it is not '
necessary to heat a large amount of air or a bulky
apparatus in order to dry the clothes.
in the stream of air, such as in the duct I6, to
ozonize the air before it comes in contact with
the tumbling clothes. This causes some bleach
ing action on the clothes and imparts a fresh
“outdoor” odor to the clothes.
An electric motor 22 is provided, which is driv
of radiant heat rays, which preferably takes the
ingly connected to the blower I 4 and to the drum
form of one or more infra-red lamps I0, is ~10 I2. If desired, the motor 22 may be provided
mounted to emanate radiant heat rays, such as
with a pulley 23, which is connected to the speed
In a preferred form of the invention, a source
infra-red,,.into an insulated case II. Means are
provided for maintaining the main body of tum
reducing pulley construction 24, terminating in
the pulley 25 drivingly connected to the drum I2
bling clothes in the path of such rays, such as a
through the medium of a shaft 26 mounted in a
rotatable drum I2, mounted to rotate in the cas 45 bearing 21.
lng I I. This drum allows the infra-red rays to ,
The insulated casing II is provided with a
pass into the drum and into the main body of
hinged door 28. A casing 29 may surround the
clothes, and may be. made of some foraminous
insulated casing I I, except at the door 28.
material such as wire mesh. The drum may be
The drum I2 may be provided with an opening
provided with a plurality of bailles I3 for tum 50 30 in its end wall, which registers with the door
bling clothes placed in the drum. If desired, the
28. so‘ that clothes may be inserted or withdrawn
baiiles I3 may be made by indentations of the wire
from the drum I2.
mesh cloth, as indicated in the drawings or may
Proper controls for the drier are provided. The
be of any other desired‘form.
switch controller 31 is mounted at any convenient
Means are provided for blowing a stream of 65 location and is provided with a control handle
' Merelyby way of example, with a drum 24
32. The control handle 32 controls switch struc
tures which connect the source of electrical pow
er a with the lamps III, the ozonizer II and mo
tor 22; If desired, the single handle 32 may be
inches in diameter and 18 inches long, a bank of
six infra-red lamps may be used,v with a total
power consumption of 1500 watts. Such a struc
ture has a drying ‘capacity substantially equal
connected to switch arrangement so that > the‘
to a drying device having the same size drum and -
lamps, ozonizer and motor are simultaneously en
Y consuming a much higher current and which does
ergized and deenergized. Individual switches Ila
not apply the heat according to my invention.
may be provided to disconnect the lamps l0,
While the form of embodiment of the invention
ozonizer 2| or motor 22'selectively.
If desired, an automatic‘ control may be pro ‘10 as herein disclosed, constitutes a preferred form,
jvided for stopping operation'of the machine when ‘ " it is to be understood that other forms might be
adopted, as may come within the scope of the
the clothes have been su?lciently dried. For this
purpose a. sensitive device 34 may be placed in
- the stream of air after ithas passed in contact
. claims which follow.
What is claimed is as follows:
with the clothes. This device 34 may be made 15
sensitive to a condition of the stream of air, '
1. A clothes drier comprising a stationary cas
ing, a perforated, cylindrical, drum in said cas
such as humidity and/or temperature. It may _ 'ing rotatable about a horizontal axis, means for
rotating said drum about said axis, an infra-red
be connected with the switching arrangement in
lamp comprising an infra~red electric heater en
structure 3| to trip a snap-acting device when
the temperature or humidity of the air is of the 20 cased in glass supported in said casing adjacent
character which comes from hot dry clothes. . the lower upwardly rising portion of said drum,
and means to circulate air through said casing
When the clothes have been sumciently dried,
‘ the humidity 'of the air is substantially reduped. - and drum.
2. A clothes drier comprising ‘a stationary cas
‘Also, when the clothes have been sui?ciently
dried, the temperature of the air rises rapidly. 25 ing, a'periorated, cylindrical, drum in said cas
The device 34 may be made responsive to either or
ing rotatable about a horizontal axis. means for a
rotating said drum about said axis, a plurality
both the temperature or humidity of the air to
of lamps each comprising an infra-red electric
actuate the trip device in the switch structure 3|
to stop operation of the machine. The switch ' heater encased in glass supported in saidvcasing'
structure per se is ‘obvious to those skilled in the 30 outside said drum adjacent the lower, upwardly
rising portion of said drum, said lamps constitut
‘art, and therefore details thereof are not shown.
ing the main heating means'oi' said drier, and
The lamps l0 preferably are of the type in
‘which the electric heater is enclosed in glass or
other ray transparent medium, so that no lint can
‘accidentally come in contact with the glowing re
means to circulate air through said casing and -
sistance. By way of example, the lamps it may
‘be mounted in front of a gold plated re?ector
ing, a perforated, cylindrical, drum in said casing
rotatable about ‘a horizontal axis, ba?les in said
‘Illb so curved as to focus the rays into the
drum, means for rotating said drum about said
axis, a plurality of lamps each comprising an in
fra-red electric heater encased in glass supported
in said casing outside said drum adjacent the
3. A clothes drier comprising a stationary cas
clothes at Mic. The lamps have heater I M en
cased in glass We. The drum I2 is rotated in the
direction shown by the arrows, so that the main
body of clothes is in front of the heaters and with
in the focal length of the re?ector. The clothes
may be brought close to the heaters because there
lower, upwardly‘ rising portion‘of said drum, said
lamps constituting the main heating means of '
said drier and means to circulate air through
is no ?re hazard when the heaters are protected 45 said casing and drum.
4. A clothes drier comprising a stationary cas
by glass or other transparent medium. Any'form
ing, a rotatable clothes drying support in said
casing, heating means in said casing, means to
‘ of infra-red ray source may be used in which the
:heater is protected by special glass ‘or any other
blow air into said casing, and means forming an ' I
‘medium transparent to infra-red rays. If de
1sired the resistances may be mounted in a bank
‘behind a single pane of glass and in front of the
outlet for air from said casing including a duct
having a lint arresting screen, and another duct
at an ‘angle to said ?rst named duct connected
adjacent said screen at a place reached by the
The lamps I0 are preferably removable, such as
jby being mounted on the removable base Illa
;for replacement or repairs.
2,406,494.-—D0'nald K. Ferris,
air before it reaches‘ said screen.
Patent dated
Dayton Ohio. Domns'rrc APPLIANCE.
by the inventor; the assignee,
Aug.'27, 1946. Disclaimer ?led Sept. 29, 1948
General _Motors ' Corporation, consenting and
Hereby enters this disclaimer to claim 4 of said patent.
[Q?icial Gazette November-'9, 1.948.]
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