US3477259A - Domestic washing machines - Google Patents
Domestic washing machines Download PDFInfo
- 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
Links
Images
Classifications
-
- 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)
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 (de) |
CH (1) | CH464135A (de) |
DE (1) | DE1585866B2 (de) |
DK (1) | DK114194B (de) |
ES (1) | ES344569A1 (de) |
GB (1) | GB1161212A (de) |
NL (1) | NL6711686A (de) |
SE (1) | SE335318B (de) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS507364A (de) * | 1973-02-19 | 1975-01-25 | ||
JPS507363A (de) * | 1973-02-19 | 1975-01-25 | ||
JPS5012870A (de) * | 1973-02-19 | 1975-02-10 | ||
JPS5025058A (de) * | 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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2218421B1 (de) * | 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)
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 |
-
1966
- 1966-08-31 GB GB38890/66A patent/GB1161212A/en not_active Expired
-
1967
- 1967-08-24 DE DE1967N0031119 patent/DE1585866B2/de active Granted
- 1967-08-24 NL NL6711686A patent/NL6711686A/xx unknown
- 1967-08-28 DK DK432767AA patent/DK114194B/da unknown
- 1967-08-28 CH CH1202767A patent/CH464135A/de unknown
- 1967-08-28 SE SE11959/67A patent/SE335318B/xx unknown
- 1967-08-29 ES ES344569A patent/ES344569A1/es not_active Expired
- 1967-08-30 US US664394A patent/US3477259A/en not_active Expired - Lifetime
Patent Citations (10)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS507364A (de) * | 1973-02-19 | 1975-01-25 | ||
JPS507363A (de) * | 1973-02-19 | 1975-01-25 | ||
JPS5012870A (de) * | 1973-02-19 | 1975-02-10 | ||
JPS5025058A (de) * | 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 (de) | 1968-03-01 |
DK114194B (da) | 1969-06-09 |
GB1161212A (en) | 1969-08-13 |
ES344569A1 (es) | 1968-10-16 |
DE1585866B2 (de) | 1977-07-14 |
SE335318B (de) | 1971-05-24 |
CH464135A (de) | 1968-10-31 |
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