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US3503085A - Linen washing machine - Google Patents

Linen washing machine Download PDF

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Publication number
US3503085A
US3503085A US738193A US3503085DA US3503085A US 3503085 A US3503085 A US 3503085A US 738193 A US738193 A US 738193A US 3503085D A US3503085D A US 3503085DA US 3503085 A US3503085 A US 3503085A
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United States
Prior art keywords
vat
bag
linen
water
section
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Expired - Lifetime
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US738193A
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English (en)
Inventor
Rene Groebli
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Individual
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Individual
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F15/00—Washing machines having beating, rubbing or squeezing means in receptacles stationary for washing purposes
    • D06F15/02—Washing machines having beating, rubbing or squeezing means in receptacles stationary for washing purposes wherein the articles being washed are squeezed by a flexible diaphragm or bag

Definitions

  • This invention relates to improvements in linen washing machines of the type using water under pressure as a driving power with a view to stirring the linen.
  • Washing machines of this type include a rigid vat enclosing a bag of a yielding or elastic fiuidtight material.
  • the bag is by watertight engagement secured at its upper open end to the upper edge of the vat.
  • a second vat, which has a greater circumference than the first vat is secured in watertight engagement with the upper edge of the second vat.
  • Each of said vats is provided with a water input pipe and with a drain or output pi-pe.
  • a removable perforated cover is provided for the first vat to which it may be rigidly secured by any suitable means.
  • the arrangement comprising the two vats is housed inside a casing closed by a fluidtight or watertight cover and includes means for controlling the linen washing machine.
  • the linen is carried in side the yielding fiuidtight bag and is subjected to an energetic stirring. This is caused by alternating water admitting and draining steps as provided through the intermittent application of fluid pressure in the first vat against the bag which intermittently presses said bag against the cover of the said bag through the line and the perforations of the cover into the second vat.
  • the pressure Steps are each individually followed by a release of the pressure prevailing against the liquid in said bag and a return suction of water through said perforations and back into the bag.
  • the linen washing machines of this type have however certain drawbacks. It is for instance a diflicult matter to obtain a perfect washing of very dirty garments since they have a tendency to agglomerate and to form flat layers as a consequence of the repeated compression of the garments against the perforated cover of the first vat. As a result the particles of dirt remain enclosed within the folds of the fabric, without any possible removal during the rinsing stage.
  • the object of this invention is to eliminate these drawbacks. Accordingly in linen washing machines made in accordance to the present invention the height of the first vat is substantially larger than its diameter and includes a restricted passage between the lower section of the vat inside which the yielding bag is positioned when Patented Mar. 31, 1970 inoperative and its upper section carrying the perforated cover. Therefore the linen is subjected to a rolling action as it passes through this restricted passage as the yielding bag rises under the action of the fluid pressure applied to said bag in the lower section of said vat. The linen expands inside the upper section of the vat after passing through the restricted passage where it spreads out and turns round.
  • This invention relates to the following features:
  • the restricted passage in the first vat is formed of a yielding fiuidtight annular pouch of rubber or the like material, fluidtightly secured along the wall of the vat, wherein the pouch is inflated to the desired extent by fluid under pressure, so as to obtain a cross-section of a predetermined breadth for said restricted passage.
  • the restricted passage is formed of a portion of a tire-shaped metal sheet inserted between the lower and upper sections of the vat.
  • the bottom of the yielding bag is shifted upwardly by providing at the center and bottom of said vat a support defining between it and the outer wall of said vat an annular gap inside which the peripheral portion of the yielding bag sinks.
  • a hydraulic jack is provided which acts on the yielding bag so as to control its rising.
  • the hydraulic jack is formed bellows folded in accordion shape when inoperative while a guiding rod is provided between the bottom of the vat and the perforated cover, so as to form a joint sliding in a corresponding opening in the yielding bag.
  • Water is sent into the jack and/ or into the vat by means of a distributing slide valve including an input of water under pressure. While a first output leads to the jack, a second output leads to the vat and a third output leads to a draining pump.
  • a fiuidtight piston extending into the body of said slide valve and subjected to the action of a spring is adapted according to its position to provide for connection between the first and/ or the second output and either the input of water under pressure or the output leading towards the draining pump.
  • a shunt pipe is provided for feeding water under pressure to the draining pump through a valve or throttled passage so as to allow said piston to return to its inoperative position.
  • FIG. 1 a diagrammatic elevational sectional view of a machine for washing linen in accordance with a first embodiment.
  • FIG. 2 a diagrammatic elevational sectional view of a linen washing machine according to a second embodiment of the invention.
  • the linen washing machine is formed of an annular casing 1 provided with an upper cover 6 secured for instance by a hinge 11 to said casing.
  • a first vat 2 is provided inside said casing 1 comprising a lower section 2b carrying the yielding fiuidtight bag 3, the upper edge of said bag 3 being secured to said vat 2 and wherein said vat 2 has, an intermediate section 15 of restricted cross-sectlonal area and an upper section 20.
  • said section 15 of a reduced cross-sectional area is shaped like a tire-shaped rubber tube adapted to be inflated to a varying extent by suitable means, for example, by water under pressure.
  • the object is to produce a cross-sectional passage of a predetermined size between the lower and upper sections of the vat.
  • said reduced section 15 it is possible for said reduced section 15 to be made of a predetermined size and removable metal sheet forming integrally part of the vat 2 with suitable mechanical means to vary the size of the passage.
  • the lower section 211 of the vat is furthermore provided with a raised bottom 2a which prevents the rubber bag 3 from sinking completely down to the bottom of the vat when the water has been exhausted, said bag resting in contradistinction on its bottom on said raised bottom 2a.
  • the vat 2 is furthermore provided with a three-way cock 8 connected with the water supply on the one hand and with the exhaust pipe on the other hand through the pipe 14 and a second three-Way cock 9.
  • the cock 8 is electrically controlled by a double-acting pressure regulator to connect the vat 2 with the pipe feeding water from the water supply Whenever the pressure drops down to a predetermined pressure, for example, zero and with the exhaust pipe when the pressure in said vat reaches a predetermined value.
  • a removable perforated cover may be rigidly secured to the upper edge of said vat 2.
  • a second or expansion vat 4 is secured inside the upper section of the casing 1.
  • the vat 2 is fitted inside the bottom of the vat 4 and its upper end is fiuidtightly secured to said vat bottom.
  • Said vat 4 is provided with a pipe 16 connected through the three-way cock 9 with the exhaust or with the water supply. Electric heating means or gas-heated means are provided underneath the vat 4.
  • FIG. 2 there is shown a further improvement over the embodiment of FIG. 1 wherein the rising and sinking movements of the bag 3 required for washing are further controlled by bellows 17 which are shown as in their inoperative accordionshaped collapsed condition.
  • bellows 17 which are shown as in their inoperative accordionshaped collapsed condition.
  • a guiding rod 18 is provided which is secured to the bottom of the lower vat section 2b and is guided at its upper end by the perforated cover 5.
  • the rubber bag 3 is provided with a central perforation 19 associated with a fluidtight packing.
  • the jack may be given any other suitable shape such as that of a hydraulic telescopic jack.
  • each rising of the bag 3 of the embodiment of FIG. 1 obtained by filling the lower vat section 215 required a consumption of 60 litres of water.
  • the filling may last as long as one minute in the case of the input of Water of 60 litres per minute.
  • each rising of the bag responds to a consumption of 4 litres or thereabouts, with a jack having a diameter equal to 10 cm.
  • a distributing slide valve 21 which includes an input of water under pressure through pipe 21a controlled by the three-way electrically controlled valve or cock 8, a first output 21b communicating with the jack 17, a'second output 210 communicating with the vat 2 and a third output 21d communicating with the draining pump 20.
  • a fluidtight piston 23 acting in cooperation with a spirng 24 is provided to act in response as required to the pressure applied.
  • a shunt pipe 25 is controlled by the auxiliary electrically controlled valve 26.
  • the electrically controlled valve- 8 delivers water under pressure through the pipe 14 while theother electrically controlled cock 9 is connected with the upper 4 vat 4 through the pipe 16, the draining being operated through the pipe 27-25 and draining pump 20.
  • This arrangement allows a complete cycle of washing with cold or hot water, rinsing and draining through mere actuation of the cocks.
  • the program may be automatically or semi-automatically controlled.
  • the lifting action released by opening cock 8 to raise bag 3 is further modified through the use of a first stage lift by pressure released by the distance slide valve 21, and second stage lift by pressure released by connection 210.
  • the bellows 17 is filled with water through the valve connection provided including the slide valve 21 and the connection valve 21b so that under the pressure of the Water inserted into the bellows, the bellows lifts the bag 3 upwardly sliding along the guiding rod 18 through the central water sealed perforation 19.
  • piston 23 moves upstream, it moves to open the introduction of water into the vat 2 through connection 210 further lifting bag 3.
  • the pressure regulator 7 adjusted for a pressure corresponding to the level 13 controls the connection between the cock 8 and the exhaust 16 pipe through the pipe 14, the cock 9, pipes 25-27, and the draining pump 20 in the case of FIG. 2, so as to cause the bag 3 to sink inside the vat 2 and the water contained in the vat 4 to be sucked back into bag 3 and into the upper portion of the vat 2. Said rising andsinking movements of the bag are repeated several times, which leads to an energetic stirring of the linen inside the bag.
  • the linen is driven upwardly at a high speed through the vat section 15 of a reduced cross-sectional area and expands inside the upper section 20 of the vat, wherein it spreads out and turns round. But during said washing stage the line is never urged under pressure against the perforated cover 5.
  • vat 4 For the rinsing of the linen following the Washing, the vat 4 is drained through the cock 9 and the draining pump 20 is operated in the case of FIG. 2.
  • the vat is then filled with clean water while the linen continues being stirred by a filling opened so as to connect the vat 4 and section 2c of vat 2 with the exhaust 16, while the cock 8 is opened to allow the input of water from thesupply of water, water being I allowed to enter the space between the bottom of the vat 2 and the bag 3 under maximum pressure, the operation of the pressure regulator being cut out.
  • a linen washing machine including a first vat open at its upper end, said first vat including a lower section, an upper section and a medial section lying between said lower and said upper sections, means for reducing the cross-sectional area of said medial section to make it smaller than the cross-sectional area of said lower and upper sections, an elastic linen carrying bag mounted in said lower section of said first vat, a perforated cover for the upper section of said first vat, a second vat enclosing the upper end of said first vat and connecting with said first vat through the perforations of said cover, means to feed water into said second vat and into said linen carrying bag, means to feed water under pressure into the lower end of said first vat to urge said bag upwardly from said lower section to said upper section of said first vat, said bag passing through said medial section so that the linen in said bag is rolled before said bag enters into said upper section and means for draining the water from both said first and said second vats.
  • a linen washing machine as claimed in claim 1 including a raised support central of the bottom wall of said first vat to support the central portion of the bottom of said bag to prevent said bag from sinking to the bottom of said first vat when the water has been drained from said first vat.
  • a linen washing machine as claimed in claim 1 including a vertically collapsible bellows, means for mounting said bellows in the lowermost portion of said first vat, said mounting means including a guide rod secured at one end to the bottom of said first vat and secured at its other end to said perforated cover and a fluid tight packing having a central perforation, said central perforation fitted about said guide rod and means for feeding water into said bellows to inflate said bellows and to raise said bag in a vertical direction.
  • a collapsible vertically movable expanding inflated support means for said bag including a collapsible vertically movable expanding inflated support means for said bag, means for mounting said support means between the bottom of said first vat and the bottom of said bag and means for inflating said support means to lift said bag in a vertical direction.
  • a linen washing machine as claimed in claim 6, including a water distributing slide valve, means for introducing water under pressure into said slide valve, a first output leading from said slide valve to the lower section of said main vat, a second output leading from said slide valve to said bellows, a third output from said slide valve to said vat draining means, said slide valve including a fluid tight piston connecting said slide valve selectively with said first, said second and said third output means, a spring urging said piston in a direction opposite to the input of water into said slide valve and a connection between said fluid introducing means and said third output.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Treatment Of Fiber Materials (AREA)
US738193A 1967-06-30 1968-06-19 Linen washing machine Expired - Lifetime US3503085A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR112621A FR92668E (fr) 1967-06-30 1967-06-30 Machine à laver le linge

Publications (1)

Publication Number Publication Date
US3503085A true US3503085A (en) 1970-03-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
US738193A Expired - Lifetime US3503085A (en) 1967-06-30 1968-06-19 Linen washing machine

Country Status (4)

Country Link
US (1) US3503085A (fr)
DE (1) DE1760773A1 (fr)
FR (1) FR92668E (fr)
GB (1) GB1226389A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4095288A (en) * 1975-05-07 1978-06-13 Garlinghouse Leslie H Variable agitator mixer
US5749249A (en) * 1995-06-23 1998-05-12 Daewoo Electronics Co., Ltd. Washing machine
US6219871B1 (en) 1997-04-14 2001-04-24 Max B. Frederick Washing apparatus and method utilizing flexible container to improve cleaning efficiency and minimize space occupancy
WO2012057688A1 (fr) * 2010-10-27 2012-05-03 Roderinno Ab Machine à laver présentant un sac de lavage
CN110691871A (zh) * 2017-06-02 2020-01-14 路德林诺公司 具有柔性洗涤隔室的洗衣机
JPWO2020026582A1 (ja) * 2018-07-31 2021-08-02 パナソニックＩｐマネジメント株式会社 洗濯機

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2153395B (en) * 1984-02-01 1987-02-25 Richard Anthony Morton Maskell Pressure washing machine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2050484A (en) * 1932-08-29 1936-08-11 Arthur A Burry Washing machine
US2099365A (en) * 1929-10-11 1937-11-16 Friedrich Emil Krauss Linen wringing machine
US2455043A (en) * 1946-04-05 1948-11-30 Ann E Calhoun Clothes cleansing and fluid extracting apparatus having a flexible clothes squeezingdiaphragm
US2651190A (en) * 1947-01-30 1953-09-08 Appliance Corp Of America Cleaning and extracting apparatus
US2752770A (en) * 1953-02-17 1956-07-03 Zephyr Laundry Machine Company Apparatus for drying and treating laundry
US3178913A (en) * 1963-03-15 1965-04-20 Donald M Olson Washing machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2099365A (en) * 1929-10-11 1937-11-16 Friedrich Emil Krauss Linen wringing machine
US2050484A (en) * 1932-08-29 1936-08-11 Arthur A Burry Washing machine
US2455043A (en) * 1946-04-05 1948-11-30 Ann E Calhoun Clothes cleansing and fluid extracting apparatus having a flexible clothes squeezingdiaphragm
US2651190A (en) * 1947-01-30 1953-09-08 Appliance Corp Of America Cleaning and extracting apparatus
US2752770A (en) * 1953-02-17 1956-07-03 Zephyr Laundry Machine Company Apparatus for drying and treating laundry
US3178913A (en) * 1963-03-15 1965-04-20 Donald M Olson Washing machine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4095288A (en) * 1975-05-07 1978-06-13 Garlinghouse Leslie H Variable agitator mixer
US5749249A (en) * 1995-06-23 1998-05-12 Daewoo Electronics Co., Ltd. Washing machine
US6219871B1 (en) 1997-04-14 2001-04-24 Max B. Frederick Washing apparatus and method utilizing flexible container to improve cleaning efficiency and minimize space occupancy
WO2012057688A1 (fr) * 2010-10-27 2012-05-03 Roderinno Ab Machine à laver présentant un sac de lavage
US9732456B2 (en) 2010-10-27 2017-08-15 Roderinno Ab Washing machine having a washing bag
CN110691871A (zh) * 2017-06-02 2020-01-14 路德林诺公司 具有柔性洗涤隔室的洗衣机
EP3631073A4 (fr) * 2017-06-02 2021-03-03 Roderinno AB Lave-linge comportant un compartiment de lavage souple
JPWO2020026582A1 (ja) * 2018-07-31 2021-08-02 パナソニックＩｐマネジメント株式会社 洗濯機

Also Published As

Publication number Publication date
FR92668E (fr) 1968-12-13
DE1760773A1 (de) 1971-12-30
GB1226389A (fr) 1971-03-24

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