US3477259A - Domestic washing machines - Google Patents

Domestic washing machines Download PDF

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Publication number
US3477259A
US3477259A US664394A US3477259DA US3477259A US 3477259 A US3477259 A US 3477259A US 664394 A US664394 A US 664394A US 3477259D A US3477259D A US 3477259DA US 3477259 A US3477259 A US 3477259A
Authority
US
United States
Prior art keywords
tub
washing
casing
washing machines
domestic washing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US664394A
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English (en)
Inventor
Philip Barnish
Colin Barrett
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
US Philips Corp
Original Assignee
US Philips Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3477259A publication Critical patent/US3477259A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/261—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements
    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/261—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements
    • D06F37/262—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements made of plastic material, e.g. by injection moulding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S220/00—Receptacles
    • Y10S220/918—Spacing element for separating the walls of a spaced-wall container
    • Y10S220/92—Shock absorbing spacing element, e.g. spring

Definitions

  • the invention relates to domestic washing machines of the kind comprising a perforated washing drum rotatable about a substantially horizontal axis within a tub resiliently mounted in an outer casing or cabinet, the washing drum having an opening for the insertion (and removal) of the articles to be laundered and being adapted to be driven by an electric motor at a relatively slow rotational speed for tumble action washing and at a higher speed for spin drying of the articles.
  • the tub should be made of a nonrusting or nonstaining material.
  • the tub is made of relatively light gauge stainless steel to minimize expense it is necessary to attach heavy masses to achieve the necessary total suspended weight.
  • Such a construction is still expensive because of the difficulties of fashioning and/ or welding stainless steel parts to provide a water-tight deep tub which has the required strength to withstand the vibrational stresses.
  • the invention consists in a washing machine of the kind first above referred to wherein the washing tub is a composite structure comprising an inner water-tight Washing tub of synthetic material, attached to and supported within a substantially rigid outer mild steel casing,
  • the inner tub is fabricated as by molding from polypropylene and the outer casing from mild steel sheet or plate of a suitable thickness to provide a major portion of the desired total suspended weight and the necessary stiffness to support the bearings for the washing drum.
  • FIGURE 1 shows a front elevation partly in section of a washing machine according to the invention
  • FIGURE 2 is a side elevation in section of FIGURE 1,
  • FIGURE 3 shows a perspective view partly in section of the outer casing surrounding the inner tub
  • FIGURE 4 is a detail to a larger scale showing the sealing of the top of the tub.
  • FIGURES 1 and 2 show the main features of a washing machine incorporating the invention.
  • the machine has an outer casing or cabinet 1 within which is resiliently suspended a composite washing tub havingthe general reference 2, by means of four springs, only two of which 3, 4 are shown in FIGURE 1. Vibrational movements of the tub are controlled by dampers 5, 6 extending between the tub and the base of the cabinet.
  • a perforated washing drum 7 is rotatably mounted by bearing assemblies 8, 9 in the walls of the tub 2 and is driven by an electric motor 10 through a belt transmission including a centrifugally operated expanding pulley on the motor shaft, a belt 11 driving a follower expanding pulley 12 acting as an idler pulley and a belt 13 engaging a pulley 14 on a shaft attached to the washing drum 7.
  • the composite tub 2 comprises an inner water-tight washing tub 15 (FIGURES 1 and 2) fabricated as by moulding from polypropylene attached to and supported within an outer, substantially rigid sheet metal casing 16 (FIGURE 2).
  • the outer casing 16 comprises a pair of end plates 17, 18 which are secured as by spot welding to the main portion 19 of the casing.
  • the end plates and the casing have circular holes through which the bearing assemblies 8, 9 for the washing drum project.
  • the end walls of the polypropylene tub 15 are secured at regions intermediate the top and bottom of the tub to the casing 16 by the clamps 20, 21 which hold the bearing assemblies 8, 9 in position.
  • the lower portions of the tub may be arranged to seat on foam rubber supports (not shown) secured to channel section cross members one of which is shown as 22, extending between the end plates 17, 18.
  • the top of the tub 2 is closed by a metal cover 24 (FIGURES 2 and 4) having a loading port for the insertion and removal of the laundry.
  • a metal cover 24 (FIGURES 2 and 4) having a loading port for the insertion and removal of the laundry. Since polypropylene, which is the preferred synthetic material for the washing tub, has a very high thermal coefficient of expansion compared with steel, it is necessary to allow for this expansion in providing a water-tight joint between the top of the tub and the surrounding casing. This is efiected as shown in FIGURES 2 and 4 by shaping the periphery of the cover to provide a recess which extends all round the cover and which houses a U-shaped gasket 25 carried by the top edge of the wash tub 15.
  • the gasket may be of resilient material, for example an elastomer, the transverse resilience being provided by external ribs or it may be formed of foamed resilient elastomeric material. Expansion of the tub in the vertical direction above and below the places where the end walls of the tub are clamped to the casing is thus permitted in the downward direction by the resilient foam rubber supports when used and in the upward direction by the top sealing arrangement above described. Expansion of the tub in the direction of the washing drum axes is accommodated by flexure of the material since, as will be seen from the drawings, the tub is not a close fit in the casing.
  • the above described arrangement provides a wash tub construction which is relatively inexpensive, has the required weight and the advantage of a water-tight washing tub of plastics material which is substantially unaffected by detergents or washing ingredients at the usual washing temperatures.
  • a washing machine having a composite construction comprising a washing tub made of a synthetic resinous material, an outer metal casing surrounding the Washing tub, a washing drum mounted within the washing tub, a bearing assembly supporting said drum for rotation about a horizontal axis and clamp means forming part of the bearing assembly housing, secured to the opposite walls of the tub for coupling the bearing assembly and the washing tub to the outer metal casing to thereby minimize vibrations of the machine.
  • a washing machine as claimed in claim 1 wherein the outer casing has an opening defined therein for insertion and removal of laundry, and a cover adapted to close said opening, said cover having a peripheral recess which when in the closed position lies adjacent to the tub walls, and a U-shaped gasket positioned over said walls and spaced from the top edge of the walls so as to form a seal between the wall and the cover and to also provided space for expansion of the wall.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Centrifugal Separators (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
US664394A 1966-08-31 1967-08-30 Domestic washing machines Expired - Lifetime US3477259A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB38890/66A GB1161212A (en) 1966-08-31 1966-08-31 Improvements in or relating to Domestic Washing Machines.

Publications (1)

Publication Number Publication Date
US3477259A true US3477259A (en) 1969-11-11

Family

ID=10406304

Family Applications (1)

Application Number Title Priority Date Filing Date
US664394A Expired - Lifetime US3477259A (en) 1966-08-31 1967-08-30 Domestic washing machines

Country Status (8)

Country Link
US (1) US3477259A (xx)
CH (1) CH464135A (xx)
DE (1) DE1585866B2 (xx)
DK (1) DK114194B (xx)
ES (1) ES344569A1 (xx)
GB (1) GB1161212A (xx)
NL (1) NL6711686A (xx)
SE (1) SE335318B (xx)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS507364A (xx) * 1973-02-19 1975-01-25
JPS507363A (xx) * 1973-02-19 1975-01-25
JPS5012870A (xx) * 1973-02-19 1975-02-10
JPS5025058A (xx) * 1973-02-19 1975-03-17
US5398528A (en) * 1994-05-02 1995-03-21 Whirlpool Corporation Pulley system for automatic washer
US6256823B1 (en) 1999-06-29 2001-07-10 The Chardon Rubber Company Bellows for front loading washing machines
US20040123631A1 (en) * 2002-12-27 2004-07-01 Jae-Won Chang Drum type washing machine
US20050097679A1 (en) * 2003-11-10 2005-05-12 Samsung Electronics Co. Ltd. Apparatus to reinforce a drum washing machine
US20060016228A1 (en) * 2004-07-20 2006-01-26 Lg Electronics Inc. Drum type washing machine and bearing housing structure thereof
US20070227200A1 (en) * 2006-03-29 2007-10-04 Lg Electronics Inc. Drum type washing machine
US7695524B2 (en) * 2003-10-31 2010-04-13 Whirlpool Corporation Non-aqueous washing machine and methods
US7827834B2 (en) 2005-09-30 2010-11-09 Lg Electronics Inc. Bearing housing assembly of drum-type washing machine and drum-type washing machine with the same
US7837741B2 (en) 2004-04-29 2010-11-23 Whirlpool Corporation Dry cleaning method
US7841220B2 (en) 2005-09-30 2010-11-30 Lg Electronics Inc. Drum-type washing machine
US7966684B2 (en) 2005-05-23 2011-06-28 Whirlpool Corporation Methods and apparatus to accelerate the drying of aqueous working fluids
US8087267B2 (en) 2002-12-27 2012-01-03 Lg Electronics Inc. Drum type washing machine
US20120047759A1 (en) * 2010-08-24 2012-03-01 Electrolux Home Products Corporation N.V. Laundry Dryer with Rear Wall Cavity
US8262741B2 (en) 1997-04-29 2012-09-11 Whirlpool Corporation Non-aqueous washing apparatus and method

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2218421B1 (xx) * 1973-02-19 1976-09-10 Amiens Const Electro Mec
DE2817513C2 (de) * 1978-04-21 1986-09-04 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Laugenbehälter aus Beton für Wasch- und Schleudermaschinen
IT1136452B (it) * 1980-07-03 1986-08-27 Zanussi A Spa Industrie Vasca in materia plastica per macchine lavabiancheria
WO2003097918A2 (en) * 2002-05-17 2003-11-27 Arçelik A.S. Drum
CN111748971B (zh) * 2019-03-27 2022-03-22 无锡小天鹅电器有限公司 桶组件以及洗衣机

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2320689A (en) * 1938-07-14 1943-06-01 Wicst Walter Washing machine
US2354208A (en) * 1940-02-23 1944-07-25 Murray Corp Washing machine
US2618141A (en) * 1947-04-24 1952-11-18 Gen Motors Corp Washing machine
US2620070A (en) * 1950-05-03 1952-12-02 Gen Tire & Rubber Co Washing machine tub and spin basket
US2667269A (en) * 1950-05-26 1954-01-26 Gen Electric Supporting frame for clotheswashing mechanism
US2975626A (en) * 1956-11-19 1961-03-21 Gen Motors Corp Washing machine having a centrifugal extractor and dryer
US2993354A (en) * 1951-12-21 1961-07-25 Electrolux Ab Apparatus for washing clothes
US3115885A (en) * 1962-06-25 1963-12-31 Gen Electric Tub for article washing machine
US3295541A (en) * 1966-02-08 1967-01-03 Gen Motors Corp Sound inhibitor and sealing arrangement for water distribution chamber
US3333282A (en) * 1964-08-24 1967-08-01 Mustee & Sons E L Utility tubs

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2320689A (en) * 1938-07-14 1943-06-01 Wicst Walter Washing machine
US2354208A (en) * 1940-02-23 1944-07-25 Murray Corp Washing machine
US2618141A (en) * 1947-04-24 1952-11-18 Gen Motors Corp Washing machine
US2620070A (en) * 1950-05-03 1952-12-02 Gen Tire & Rubber Co Washing machine tub and spin basket
US2667269A (en) * 1950-05-26 1954-01-26 Gen Electric Supporting frame for clotheswashing mechanism
US2993354A (en) * 1951-12-21 1961-07-25 Electrolux Ab Apparatus for washing clothes
US2975626A (en) * 1956-11-19 1961-03-21 Gen Motors Corp Washing machine having a centrifugal extractor and dryer
US3115885A (en) * 1962-06-25 1963-12-31 Gen Electric Tub for article washing machine
US3333282A (en) * 1964-08-24 1967-08-01 Mustee & Sons E L Utility tubs
US3295541A (en) * 1966-02-08 1967-01-03 Gen Motors Corp Sound inhibitor and sealing arrangement for water distribution chamber

Cited By (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS507364A (xx) * 1973-02-19 1975-01-25
JPS507363A (xx) * 1973-02-19 1975-01-25
JPS5012870A (xx) * 1973-02-19 1975-02-10
JPS5025058A (xx) * 1973-02-19 1975-03-17
US5398528A (en) * 1994-05-02 1995-03-21 Whirlpool Corporation Pulley system for automatic washer
US8262741B2 (en) 1997-04-29 2012-09-11 Whirlpool Corporation Non-aqueous washing apparatus and method
US6256823B1 (en) 1999-06-29 2001-07-10 The Chardon Rubber Company Bellows for front loading washing machines
US7930910B2 (en) 2002-12-27 2011-04-26 Lg Electronics Inc. Drum type washing machine
US8341983B2 (en) 2002-12-27 2013-01-01 Lg Electronics Inc. Drum-type washing machine
US20060243003A1 (en) * 2002-12-27 2006-11-02 Jae-Won Chang Drum type washing machine
US8616027B2 (en) 2002-12-27 2013-12-31 Lg Electronics Inc. Drum type washing machine
US7533548B2 (en) 2002-12-27 2009-05-19 Lg Electronics Inc. Drum type washing machine
US8887537B2 (en) 2002-12-27 2014-11-18 Lg Electronics Inc. Drum-type washing machine
US8387421B2 (en) 2002-12-27 2013-03-05 Lg Electronics Inc. Drum-type washing machine
US7571625B2 (en) 2002-12-27 2009-08-11 Lg Electronics Inc. Drum type washing machine
US8646293B2 (en) 2002-12-27 2014-02-11 Lg Electronics Inc. Drum type washing machine
US20040123631A1 (en) * 2002-12-27 2004-07-01 Jae-Won Chang Drum type washing machine
US8156770B2 (en) 2002-12-27 2012-04-17 Lg Electronics, Inc. Drum type washing machine
US8646292B2 (en) 2002-12-27 2014-02-11 Lg Electronics Inc. Drum type washing machine
US8302434B2 (en) 2002-12-27 2012-11-06 Lg Electronics Inc. Drum-type washing machine
US8336339B2 (en) 2002-12-27 2012-12-25 Lg Electronics Inc. Drum type washing machine
US8671719B2 (en) 2002-12-27 2014-03-18 Lg Electronics Inc. Drum type washing machine
US8336340B2 (en) 2002-12-27 2012-12-25 Lg Electronics Inc. Drum-type washing machine
US8087267B2 (en) 2002-12-27 2012-01-03 Lg Electronics Inc. Drum type washing machine
US8322170B2 (en) 2002-12-27 2012-12-04 Lg Electronics Inc. Drum-type washing machine
US7695524B2 (en) * 2003-10-31 2010-04-13 Whirlpool Corporation Non-aqueous washing machine and methods
US7805965B2 (en) * 2003-11-10 2010-10-05 Samsung Electronics Co., Ltd. Apparatus to reinforce a drum washing machine
US8261580B2 (en) 2003-11-10 2012-09-11 Samsung Electronics Co., Ltd. Apparatus to reinforce a drum washing machine
US20050097679A1 (en) * 2003-11-10 2005-05-12 Samsung Electronics Co. Ltd. Apparatus to reinforce a drum washing machine
US7837741B2 (en) 2004-04-29 2010-11-23 Whirlpool Corporation Dry cleaning method
US8931312B2 (en) 2004-07-20 2015-01-13 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8677787B2 (en) 2004-07-20 2014-03-25 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8726702B2 (en) 2004-07-20 2014-05-20 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8783072B2 (en) 2004-07-20 2014-07-22 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
CN1932126B (zh) * 2004-07-20 2012-02-08 Lg电子株式会社 滚筒式洗衣机
US8800326B2 (en) 2004-07-20 2014-08-12 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8887538B2 (en) 2004-07-20 2014-11-18 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US7607326B2 (en) * 2004-07-20 2009-10-27 Lg Electronics Inc. Drum type washing machine and bearing housing structure thereof
US7568366B2 (en) 2004-07-20 2009-08-04 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8429938B2 (en) 2004-07-20 2013-04-30 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US8434334B2 (en) 2004-07-20 2013-05-07 Lg Electronics Inc. Drum-type washing machine and bearing housing structure thereof
US20060016228A1 (en) * 2004-07-20 2006-01-26 Lg Electronics Inc. Drum type washing machine and bearing housing structure thereof
US7966684B2 (en) 2005-05-23 2011-06-28 Whirlpool Corporation Methods and apparatus to accelerate the drying of aqueous working fluids
US8225628B2 (en) 2005-09-30 2012-07-24 Lg Electronics Inc. Drum-type washing machine
US8671718B2 (en) 2005-09-30 2014-03-18 Lg Electronics Inc. Drum-type washing machine
US7827834B2 (en) 2005-09-30 2010-11-09 Lg Electronics Inc. Bearing housing assembly of drum-type washing machine and drum-type washing machine with the same
US7841220B2 (en) 2005-09-30 2010-11-30 Lg Electronics Inc. Drum-type washing machine
US8220294B2 (en) 2005-09-30 2012-07-17 Lg Electronics Inc. Drum-type washing machine
US8234890B2 (en) 2005-09-30 2012-08-07 Lg Electronics Inc. Drum-type washing machine
USRE43625E1 (en) 2006-03-29 2012-09-04 Lg Electronics Inc. Drum type washing machine
USRE44674E1 (en) 2006-03-29 2013-12-31 Lg Electronics Inc. Drum type washing machine
USRE44795E1 (en) 2006-03-29 2014-03-11 Lg Electronics Inc. Drum type washing machine
USRE44028E1 (en) 2006-03-29 2013-02-26 Lg Electronics Inc. Drum type washing machine
USRE44511E1 (en) 2006-03-29 2013-10-01 Lg Electronics Inc. Drum type washing machine
US7536882B2 (en) * 2006-03-29 2009-05-26 Lg Electronics Inc. Drum type washing machine
US20070227200A1 (en) * 2006-03-29 2007-10-04 Lg Electronics Inc. Drum type washing machine
US20120047759A1 (en) * 2010-08-24 2012-03-01 Electrolux Home Products Corporation N.V. Laundry Dryer with Rear Wall Cavity
US8499473B2 (en) * 2010-08-24 2013-08-06 Electrolux Home Products Corporation, N.V. Laundry dryer with rear wall cavity

Also Published As

Publication number Publication date
DE1585866A1 (de) 1971-01-28
NL6711686A (xx) 1968-03-01
DK114194B (da) 1969-06-09
GB1161212A (en) 1969-08-13
ES344569A1 (es) 1968-10-16
DE1585866B2 (de) 1977-07-14
SE335318B (xx) 1971-05-24
CH464135A (de) 1968-10-31

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