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Jan'. 24, 1950
s. sTRiBLlNG
Filed Aug. 21, 1944
4f 42
417 63
Patented Jan. 24, 1950
y 2,495,488
Sidney stribling, san Francisco, Cain?.>
Application August 21, 1944, Serial No. 550,356
1 claim.y (ci. iis-1s)
simplification of the equipment and method of dry
8, 9, mounted in the bearings 5, 6. This drum is
held in the vertical position shown by the spring
latch I0 pivoted on the base and controlled by
the‘manual link II guided in the wall 2. It is
held in the horizontal position by the spring
catch I2, pivoted on the wall 2 and manually
controlled by the link I3 guided in the wall ad
Another object is to reduce the dry cleaning
and cleaning ñuid salvaging apparatus to the
jacent the link II, for convenience. The hand
lever I4 is ñxed in the trunnion 8 for swinging
This invention relates to a machineand method
of dry cleaning and more particularly to means
and methods for dry cleaning Wearing apparel,
fabrics and the like.
Among the objects of the invention is t-he
10 the tilting drum 'I into the vertical or horizontal
minimum, With a ñuid circulating means com
bined therewith.
Another object is the introduction of controlled
heating units in the Washer and salvaging ap
positions, the latter being indicated by dot-dash
lines. The drum is provided with the removable
pressuretight cover I5.
The perforated tumbling drum I6 is mounted
Another obj ect is to enable the selectiveuse of a 15 within the tilting drum on the step shaft at I'I
and the driving shaft I8 mounted on its opposite
ends and engaging bearings arranged in the op
c cle.
posite ends of the tilting drum respectively. The
yAnother object is to provide a single fluid clari
shaft -I8 passes through the stuñing box i9, for
fying and salvaging unit adapted to a variety
of cleaning iiuids.
20 sealing the contents of the tilting drum. The
tumbling drum has the removable pressure tight
Other objects and advantages Will appear as
cover 20, of smaller diameter and adapted to be
the description proceeds. In the speciñcation
-alined with the cover I 5 on the tilting drum.
and the accompanying drawings the invention
The shaft I8 has the pulleys 2 I, 22 íixed thereon
is disclosed in its preferred form. But it is to be
understood that it is not limited to this form. 25 and driven by the belts 23, 24 driven by pulleys
on the shaft of the ‘change speed gear box 25
` Because it may be embodied in modifications
which has the control handle 26,` by which the
within the spirit ci the invention as defined in
tumbling drum may be driven at speeds selected
the claim following the description.v
by the handle 26. The shaft in the change speed
Heretofore it has been the practice to separate
gear box is driven by the motor 2'I mounted upon
the dry cleaning Washer from the fluid salvaging
the outside of the tilting drum l. In this manner
or redistilling apparatus and t0 centrifuge the
the tumbling drum I 6 may be driven at relatively
cleaned garments in a separate machine. A
low speed in the horizontal position, during the
modern equipment usually comprises as manyY as
cleansingl or washing cycle and at high speed for
ñve separate machines, requiring excessive door
centrifuging the contents of the tumble drum
space and rehandling of the garments >being
free of the fluid, when the tilting drum is in the
cleaned. The present invention requires the min«
vertical position.
, ,
imum of floor space and but two handlings of
The clariñer comprises .the pressure tight tank
the garments, to load then unload the rotary
28, having a series of spiral steam pipes arranged
In the one sheet of drawings:
. 40 therein about midway of its height and having
the steam inlet and outlet Valves 29, 3i) respec
Fig. l is a side elevation of a tumbling drun
tively, controlling the steam supply from any
washer unit in full lines, combined with a re
variety of cleaning fluids in a single Washing
distillation unit, shown in Vertical section, inac
cordance with this invention.
Fig. 2 is a vertical section of a tumbling drum
washer shown in Fig. l, on the line 2--2.
‘ ‘-
Fig. 3 is a vertical section of one of the ñlterlng
Units shown in Fig. l.
In detail the structure shown in Fig.v2, com
prises the base I, adapted to be mounted upon
the ñoor, and surrounded by the cylindrical
splash wall 2. This base has the bearing pillars
3, él, integral with the base and having the _bear
ings 5, 6 on their top portions.
The external tilting drum 'I has the trunnions
suitable source, not shown.
A similar heating unit'is located adjacent the
bottom` of the clarifier and controlled by the inlet
and outlet steam valves 3l, 32. The tank 28 has
the lower drain valve 33, through a filter 34 lo
cated on the bottom of this tank. _The pressure
tight sludge removal door 35 is provided at the
bottom of this tank. A bank of filter units at 36
are arranged in the upper portion and suspended
from the removable cover 31.
These filter units 36 discharge through inde
pendent valves and sight glasses such as 38, 39
and into the manifold 40, that is connected
through the pipe 4| and valves 42, 43 with the
rather than to ñoat in an excess of fluid. The
intake of iluid through the valve 5| is propor
ñuid storage tank 44.
This tank may be one of
several connected through the pipe 4| with the
clarifying unit, through independent valves and
adapted to contain a variety of cleaning solu
tions respectively.
The conventional condenser comprises the
Water jacket 45, having a condensing Worm 45'
therein, connected through the pipe 46 and valve
41, with the top or“ the clarifier tank' 28 to'recei've
and condense vapor therefrom.
The worm dis
charges at the bottom through pipe 48, leading
to a container for the condensation, or back tol
the tank 44. Water is introduced in-tofthe'ws‘iter1`
Liacket 45 through the inlet 49. AAn outlet from
the water jacket is connected throu'g'hßthe“ v'a‘lveV
50, with the top of the tank-r28. ~, v
The cleaning fluid supplyfroma source such
as 44, discharges through the pipe 4|, theëvalve'
5| and the flexible hose" 52 into the tilting drum L
l. From this drum the fluid gravitates through
tioned to the capacity of the pump 55, which
withdraws the iluid from the drum l and dis
charges it into the clarifier unit 28. This builds
up a pressure within the clariñer which ejects
the fluid therefrom, through the bank of filters
at 36, into the pipe 4|, through the open Valves
42, 5| land back to the washer at l. A rapid cir
culation of warm clean huid is maintained under
pressure during the Washing cycle. The desired
temperature of the fluid is regulated by the heat
ing units at 2Q, 3|, 53, as indicated on the ther
moineter B3'.
When~the sludge has collected in the lower
portion of the tank 28
extenuthe valve at 64
liquid above is drawn
storage tank such as
to a ñuid contaminating
is opened and the usable
olf and returned to the
44. The sludge is then
withdrawn through the door 35.
When the sludge is removed, the clarifier may
the nexible hose
the pipe 54 and into the intake
of the pump 55, which discharges it through-the
pipe 55 and the vvalve 5"! into the top of the-tank
2B, maintaining a pump pressure on this tank
that forces the ñuid therein outward through the
then be used for purifying the contaminated
liquid in the tank 44. This is done by again
pumping the liquid from the tank 44, through
ñlters at 35, the pipe 4|, the valves 42, 5| and
back into the tilting drum l when the valve 43
unit 29-3fv;
is closed.
During the washing cycle, a circulation'- of t
heated fluid under pump pressure is maintained
in the washing and clarifying-unitsl‘L-28.' To
assure the maintenance of the desired tempera
ture throughout the circulating system described,
especially in the drum 1, it is also provided with .
an internal heating unit comprising a spiral pipe
having the steam inlet and outlet 58, 59 respec
The soilure from the garments or other con
tents of the tumble drum lB‘is mechanically re
moved by the ñlters at 3S, and is precipitated as
sludge into the lower portion of the tank: 28,
where it remains inert and'separated 'from the
fiuid circulated by the pump 55.' These'- ñlter
units as shown in Fig. 3, comprise the center
pipe Sil, open at the' end. This is surrounded-by
the wire mesh cage 5|, covered by‘aïsu'itàble
fabric filter pad 52, through which the ñuid
seeps', leaving'the sludge on its~ outside,A from
which it precipitates to the bottom of'the‘tan'k. '
This invention is adapted tothe use off' any
conventional cleansing fluids-such as hydrocar
bon derivatives, carbon tetrachloride, Sapona
cious solutions and mixtures thereof, miscible
or nonmiscible. One advantage of the present
invention and its mode of operation', is the fact
that one form of cleaning fluid'n‘lay be intro
duced and withdrawn and another or others sub
stituted, during the cleaning cycle, Without shut
ting down, transferring the garments being
cleaned, or opening the washing unitat 1, or the
clarifier at 28.
The mode of operation is substantially as fol
lows: The selected cleaning fluid is introduced,
for instance from the storage tank 44, through
the valves 43, 5l, the flexible hose 52 and into
the tilting drum 1. The pump 55 is then started,
with the tilting tank in the horizontal position
and previously loaded with the garments to be
cleaned, through the doors l5, 20. The quan
tity of fluid in the tank ‘i is regulated by the
valve 5|, to the desired level, usually about'one
the tilting drum and back into the desludged
clarifier tank 28, until it rises above the heating
The heat liberated in> the clariñer
tank '28 causes vapors to rise from the Volatile
contents and pass out through the outlet 46, the
Valve 4l, the worm 45’ tc the outlet 48 from
whence the condensed fluid is returnd to the tank
44 for reuse. The Worm 45’ is chilled by water
circulating through the water jacket 45, from the
inlet v49.
Shouldthe temperature rise above the desired
degree and cause a too rapid vaporization, this
can be checked by opening the valve
will-inject cold water into the tank 28 and cause
a drop of temperature therein. This’water will
form‘afihn on top ‘of heavier fluids, such as car
bon tetrachloride, or descend through the lighter
fluids 'and drop Vinto the sludge' sump at the bot
tom' of thertank 28, where it can-be withdrawn
through the-drainvaive 33. The volatiles in the
sludgeare vaporized by' thev heating unit at 3l,
32 and rise into the’liquid above.
The washer operates substantially'as follows.l
The latch Hl is released and the drum 'E swung
to the horizontal position by the handle |4. In
thisposition the latch l2 automatically engages
to hold'the'drum inthe horizontal position.
The cover l5 is then removed and the tumble
drum I8 manually rotated until its cover 2t
registers' with the- opening beneath the cover vI5.
The removal of the cover ‘âîi'permits Íree'access
to the interior of the tumble drum, which is then
loaded with the garments to be cleaned. The
covers l5, 2G are then replaced and the drum 'l
is filled to the desired' height to saturate the
garments with the cleaning fluid flowing from
the tank 44' through the ñeXible hose 52.
The motor 2l is then switched on and the
tumble drum IB is driven through the reducedspeed pulley 22, until the contents ofthe washer
is thoroughly cleaned by the rotary, splashing
and agitation of the cleaning fluid circulating
through the perforated wall of the tumble drum.
When the cleaning` cycle is completed, the
pump 55sucks the cleaning fluidfrom the drum
1 and dischargesfit back into the clarifier tank
28. The latch |2- is then released and the drum
1 restored to the vertical position and driven at a
third full, so that the `garments will rise, fall
andjsplash into lthe liquid in the tumble-drum « | 6, 75 centrìfuging speedl` by the smaller pulley 22--by
9,495,488 ,
the motor 21. This removes the cleaning fluid
, absorbed by the contents of the tumble drum l5,
which accumulates in the drum 1 out of contact
with the contents of the tumble drum. AnyV ex
cess of extracted fluid may be pumped out> as
The tilting drum 'l is then restored to the
horizontal position and the covers I5, 20 re
moved for unloading the tumble drum I6. A par
ticular advantage of the present invention and i
mode of operation is, that the dry cleaned ina
terial is dry when manually handled, greatly re
‘ ducing the hazards incidental to handling in
flammable materials and contaminating vapors.
Another advantage is the ease with which a
variety of hydro carbon, soapy solutions and
various cleaning mixtures, may be interposed and
substituted during the cleaning cycle, without
opening the various units in the combined wash
clariñer tank having an internal heating ele
ment; a I'llter in said clarifier tank and discharg
ing into said storage tank; a condenser to receive
and condense vapors from said clariñer tank
and surrounded by a Water jacket discharging
Water into said clariñer tank; and a pump con
nected with said washer enclosing drum and dis
charging into said clarifier tank.
The following references are of record in the
ñle of this patent:
Watel ____ __ ______ __ June 6, 1893
Barbe ____________ __ Nov. 1, 1904
Bedal ____________ __ Sept. 2, 1913
ing and clarifying combination of elements. In ‘
this manner soapy or detergent solutions may pre
Hirst _____________ __ Jan. 1, 1929
Silver ___________ __ Sept. 16, 1930
cede or follow dry cleaning iluids, and be washed
out with clean water and extracted. The heating
element 58, 59 also provide means for raising
in using
Water and
boiling point
if necessary
in theA
Boiney ____ __. _____ __ Mar. 3, 1931
Sando _____ __ ____ __ Feb. 13, 1934
Norquist __________ __ Feb. 20, 19'34
Hetzer ___________ __ Nov. 13, 1934
Pugh ____________ __ June 16, 1936
Washer unit.
Having thus described this invention and its
mode of operation, what is claimed. and desired
to secure by Letters Patent is:
Passar ___________ __ Sept. 1, 1936
, 2,138,858
Hamm __________ __ June 21,1938
Hjelm ____________ __ Dec. 6, V1935?.
Busi ______________ __ Jan. 10,1939
Busi _____________ __ Aug. 29, 1939
House ___________ __ Jan. 30, 1940
Zellhoefer ____ ___--- Apr. 21, 1942
A dry cleaning machine comprising a me
chanical washer having anenclosing drumj a
storage tank for a cleaning fluid and discharging
into said enclosing drum; a pressure sealed
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