US3530517A - Method of and apparatus for applying to and withdrawing liquid cleaning and treating means from textile floor covering especially carpeting - Google Patents

Method of and apparatus for applying to and withdrawing liquid cleaning and treating means from textile floor covering especially carpeting Download PDF

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Publication number
US3530517A
US3530517A US666621A US3530517DA US3530517A US 3530517 A US3530517 A US 3530517A US 666621 A US666621 A US 666621A US 3530517D A US3530517D A US 3530517DA US 3530517 A US3530517 A US 3530517A
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United States
Prior art keywords
foam
floor covering
liquid
air
textile floor
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Expired - Lifetime
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US666621A
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English (en)
Inventor
Egon Nohl
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Individual
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Individual
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Publication of US3530517A publication Critical patent/US3530517A/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4044—Vacuuming or pick-up tools; Squeegees
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/34—Machines for treating carpets in position by liquid, foam, or vapour, e.g. by steam

Definitions

  • the present invention concerns the wet cleaning of surfaces, especially of textile floor covering, and in particular concerns such methods according to which after applying the liquid, the same has to be again withdrawn.
  • a heretofore known way of realizing this goal consists in employing air under pressure or pressing the liquid through porous bodies in order to produce foam which is then applied to the carpet. This liquid is after it has been correspondingly worked into the carpet, again withdrawn from the latter after a shorter or longer period of action.
  • This method has considerable drawbacks.
  • the device for producing compressed air which is separate from the suction device and the feeding of compressed air to the textile fabric to be cleaned requires additional equipment, and on the other hand the foam must be rather stable in order that it will not be destroyed too fast under the influence of the suction vacuum. It is for this reason that the application of many solvents which are extremely effective for cleaning purposes is not possible because the stability of the foam will be considerably reduced when adding such solvents to be cleaning liquid.
  • the method according to the present invention is characterized primarily in that the foam is produced by the vacuum effect from the liquid and is applied to the material to be treated.
  • the method according to the invention is based on the finding that for the formation of foam it is merely necessary on a foaming element to create a pressure drop while it is irrelevant for the foam formation whether foam bubbles are produced which contain gas under a pressure higher than the normal atmospheric pressure, or whether said bubbles contain gas under normal pressure and the overpressure exists with regard to a vacuum outer atmosphere.
  • the present invention employs the vacuum created for withdrawing the foam also for producing the foam.
  • a preferred Way of producing the foam in this manner consists in that the liquid to be foamed as well as the air are withdrawn through a suitable screen body or porous body. It is from this body that the liquid comes out in the form of foam while permeated with air, and the foam passes to the surface to be treated and after a shorter or longer period of action is again withdrawn by suction air flow which produces the vacuum.
  • the foam development may be controlled by a suitable selection of the screen body or porous body, by selecting the respective cleaning medium and by controlling the quantity which is fed per second.
  • the development of the foam as to quantity and quality and thereby also the period during which the foam is active, as well as the depth to which the foam enters the material to be cleaned can be controlled in a simple manner by varying the strength and/or the direction of a suction air flow from the exit range or the place where the foam is created.
  • Foam which contains a considerable amount of air (dry foam) will be more stable and penetrates less deeply into the material to be cleaned and vice versa.
  • the cleaning effect can be considerably improved by heating up the liquid and/or the air which is drawn by the liquid through the porous body.
  • the feeding of the liquid is interrupted after completed application of the liquid, and the treated surface is dried preferably by means of heated air which during the application passes through the porous body.
  • the time until the flooring being treated can again be used will in this way be considerably reduced and/or the preceding degree of humidification can be increased.
  • the present invention also concerns an apparatus for carrying out the method of applying and withdrawing liquid cleaning andtreating means, said apparatus comprising a treatment head which is movable over the surface to be treated.
  • a treatment head which in the form of a bell is located immediately over the surface to be treated, there are provided means for applying liquid while the inner chamber of the bell, for purposes of withdrawing the applied liquid, is connected to a low pressure producing device.
  • the apparatus according to the invention is characterized primarily in that in the bell there is provided a hole-slot or a porous body which on one side is exposed to the vacuum effect in the bell while the other side receives air and liquid,
  • the apparatus according to the invention may be so designed that an air inflow pipe is inserted in the wall of the bell which pipe is open at its lower end which extends into the bell chamber and is designed as holding means for a foaming body, such as a screen or porous body.
  • the treating liquid is conveyed to said body from the top, preferably through a pipe coaxially extending through the air inflow pipe.
  • the air inflow pipe has arranged therein an element, as for instance a slotted diaphragm or the like, for varying the cross section of the passage.
  • a heating body is arranged in the air inflow passage.
  • a heating body may be provided in the feeding line of the liquid.
  • a shutoff valve may be arranged in the feeding line for the liquid. In order in this connection to avoid the throttling of the air flow by the porous body, it is possible according to the invention to move the porous body out of the postflow passage for the air.
  • the bell-shaped head 1 which rests on the floor in an air-tight manner as far as possible has a withdrawing connection 2 by means of which the head is connected for instance to the suction side of a vacuum cleaner.
  • a withdrawing connection 2 by means of which the head is connected for instance to the suction side of a vacuum cleaner.
  • an air inflow pipe 3 Inserted into the wall of head 1 is an air inflow pipe 3 the lower end of which is closed with the exception of an exit slot 4 and in which a porous body 5 is arranged.
  • This porous body receives from the top cleaning liquid through a further pipe 6 which extends through the air inflow pipe 3.
  • the said pipe 6 may have arranged therein heating elements for heating the liquid being fed into the device.
  • the upper range of pipe 3 has inserted therein a heating element 7.
  • the upper end of pipe 3 has provided therein a slotted diaphragm *8 or the like. Furthermore, within the pipe 6 or at another place in the conduit leading thereinto, there may be provided a device which is adapted to vary the liquid inflow or to close off said inflow completely, e.g. a valve 12.
  • the head 1 has behind the foaming means 3, 6 (when looking in the direction of withdrawal) arranged therein a wall 9 which similar to a gate may be raised or lowered at will whereby a withdrawal passage is created which extends over the entire width of the slot 4 and may be varied as to cross section.
  • the porous body 5 can selectively be Withdrawn from the range of the air passage or slot, for instance by turning or withdrawing its guiding means so that the air for the drying process can pass into the bell chamber for the 4 drying operation without being impeded in any way (see dot-dash line position 11 of body 5).
  • a method of treating textile floor covering, especially carpeting, with a fluid which includes the steps of: subjecting the treatment fluid for treating the textile floor covering to be treated to an underpressure preliminarily so as to produce a foam more effectively from said fluid, creating the underpressure primarily by a suction flow of air exerting a suction upon the foam where it is being formed permeable through porous passage, controlling said foam by varying said suction flow, and only subsequently applying the thus created foam to said textile floor covering.
  • a method of treating textile floor covering, especially carpeting, with a fluid which includes the steps of: subjecting the treatment fluid for treating the textile floor covering to be treated to an underpressure preliminary so as to produce a foam more effectively from said fluid, already intermixing the treatment fluid with air under pressure particularly at the place of formation of the foam before floor application, and only subsequently applying the thus created foam to said textile floor covering.
  • a method of treating textile floor covering, especially carpeting, with a fluid which includes the steps of: subjecting the treatment fluid for treating the textile floor covering to be treated to an underpressure so as to produce a foam from said fluid, intermixing the treatment fluid with warmed up air under pressure at the place of formation of the foam, and applying the thus created foam to said textile floor covering.
  • a method of treating textile floor covering, especially carpeting, with a fluid which includes the steps of: subjecting the treatment fluid for treating the textile floor covering to be treated to an underpressure so as to produce a foam from said fluid and applying the thus created foam to said textile floor covering, following the application of a desired quantity of foam to the textile floor covering to be treated cutting off the supply of further treatment fluid and drying the wet textile floor covering by warm air conveyed to the place of formation of said foam.

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  • Treatment Of Fiber Materials (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning In General (AREA)
US666621A 1966-09-12 1967-09-11 Method of and apparatus for applying to and withdrawing liquid cleaning and treating means from textile floor covering especially carpeting Expired - Lifetime US3530517A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT856266A AT283655B (de) 1966-09-12 1966-09-12 Vorrichtung zum Auftragen und Wiederabsaugen von flüssigen Reinigungs- oder Pflegemitteln in Schaumform

Publications (1)

Publication Number Publication Date
US3530517A true US3530517A (en) 1970-09-29

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ID=3606587

Family Applications (1)

Application Number Title Priority Date Filing Date
US666621A Expired - Lifetime US3530517A (en) 1966-09-12 1967-09-11 Method of and apparatus for applying to and withdrawing liquid cleaning and treating means from textile floor covering especially carpeting

Country Status (4)

Country Link
US (1) US3530517A (de)
AT (1) AT283655B (de)
DE (1) DE1628741A1 (de)
GB (1) GB1167239A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3711891A (en) * 1970-08-03 1973-01-23 J Conway Jet-vibrator-vacuum system and method
US4154578A (en) * 1977-08-01 1979-05-15 Bane William F Method and apparatus for cleaning a carpet on location
US4314804A (en) * 1979-01-27 1982-02-09 Girmes-Werke Ag Process for washing dyed or printed textile material
US4974618A (en) * 1983-08-31 1990-12-04 Duraclean International, Inc. Apparatus and method for fabric cleaning with foam
US5224235A (en) * 1991-06-28 1993-07-06 Digital Equipment Corporation Electronic component cleaning apparatus

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2806681C2 (de) * 1978-02-16 1982-06-16 Werner & Mertz Gmbh, 6500 Mainz Teppichentwässerungsgerät
CA1245407A (en) * 1983-08-31 1988-11-29 Leonard N. Nysted Apparatus and method for fabric cleaning with foam
AU646947B2 (en) * 1987-11-18 1994-03-10 Vax Appliances (Australia) Pty Ltd Suction cleaning head
ATE81958T1 (de) * 1987-11-18 1992-11-15 Vax Appliances Australia Saugreinigungskopf.
AU625854B2 (en) * 1987-11-18 1992-07-16 Vax Appliances (Australia) Pty Ltd Suction cleaning head

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US930628A (en) * 1908-10-03 1909-08-10 Arthur H Squier Air-suction cleaning apparatus.
US1498255A (en) * 1923-03-23 1924-06-17 Winchester Carey Carter Rug and fabric cleaning device
US1929345A (en) * 1932-06-16 1933-10-03 Raymond S Brown Upholstery washer
US2292435A (en) * 1937-11-26 1942-08-11 Leo C Crites Window washing apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US930628A (en) * 1908-10-03 1909-08-10 Arthur H Squier Air-suction cleaning apparatus.
US1498255A (en) * 1923-03-23 1924-06-17 Winchester Carey Carter Rug and fabric cleaning device
US1929345A (en) * 1932-06-16 1933-10-03 Raymond S Brown Upholstery washer
US2292435A (en) * 1937-11-26 1942-08-11 Leo C Crites Window washing apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3711891A (en) * 1970-08-03 1973-01-23 J Conway Jet-vibrator-vacuum system and method
US4154578A (en) * 1977-08-01 1979-05-15 Bane William F Method and apparatus for cleaning a carpet on location
US4314804A (en) * 1979-01-27 1982-02-09 Girmes-Werke Ag Process for washing dyed or printed textile material
US4974618A (en) * 1983-08-31 1990-12-04 Duraclean International, Inc. Apparatus and method for fabric cleaning with foam
US5224235A (en) * 1991-06-28 1993-07-06 Digital Equipment Corporation Electronic component cleaning apparatus

Also Published As

Publication number Publication date
GB1167239A (en) 1969-10-15
AT283655B (de) 1970-08-10
DE1628741A1 (de) 1971-02-18

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