US3435639A - Machine for washing and centrifuging laundry - Google Patents

Machine for washing and centrifuging laundry Download PDF

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Publication number
US3435639A
US3435639A US609946A US3435639DA US3435639A US 3435639 A US3435639 A US 3435639A US 609946 A US609946 A US 609946A US 3435639D A US3435639D A US 3435639DA US 3435639 A US3435639 A US 3435639A
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United States
Prior art keywords
machine
washing
centrifuging
laundry
drum
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Expired - Lifetime
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US609946A
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Cyprien Jean Dupeux
James Belaieff
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Philips North America LLC
US Philips Corp
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US Philips Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/04—Castors in general; Anti-clogging castors adjustable, e.g. in height; linearly shifting castors
    • B60B33/045—Castors in general; Anti-clogging castors adjustable, e.g. in height; linearly shifting castors mounted resiliently, by means of dampers
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/12—Casings; Tubs
    • D06F39/125—Supporting arrangements for the casing, e.g. rollers or legs

Definitions

  • the invention relates to machines for washing and centrifugal drying and is directed to the supporting structure thereof which permits freedom of movement of the machine in the horizontal and vertical directions thereby stabilizing its operation throughout the speed range of the rotating clothes basket.
  • the frame of the machine is mounted on wheels which are pivotable about respective axes which are offset from the vertical and have their upper ends inclined towards the center of the frame.
  • the wheels are connected to the frame bottom through an elastic coupling consisting of two interfitting coaxial tubes and a helical spring arranged within the tubes and coaxial therewith and with the axis of the mounting wheels.
  • the invention rel-ates to a machine for washing and centrifuging laundry, comprising a supporting frame, in which a casing and a washing drum having a non-vertical rotary shaft are accommodated, which parts are interconnected so as to be non-displaceable relative to each other.
  • washing and centrifuging machines should have freedom of movement in three relatively orthogonal directions in order to overcome the critical speed during the start of the centrifuge.
  • Machines of this kind have the advantage of small dimensions, but they have the disadvantage that in centrifuging only a low speed of rotation can be attained.
  • the machine Since in the vertical plane the machine does not have a freedom of movement, it tends to jump as soon as the centrifugal forces exerted on the wet washings, not uniformly distributed along the circumference of the drum, exceed the weight of the machine, so that the machine shifts in place each time when the lack of equilibrium of the centrifugal force is in the upper part of the drum.
  • ballast has the disadvantage that the cost price and the weight of the machines are increased and the displacement, the transport and the installation are rendered more diflicult.
  • the present invention provides a washing and centrifuging machine which unites the advantages of the two Patented Apr. 1, 1969 aforesaid types and which does not exhibit the disadvantages thereof.
  • the invention is characterized in that there are provided elastic means allowing a free displacement of the frame with the casing and the drum in a vertical sense and a device allowing a free displacement of said frame in a horizontal plane and in that by means of said device the machine bears on the ground and the elastic means establish the connection between the supporting frame and said device.
  • An advantageous embodiment of the washing and centrifuging machine according to the invention is characterized in that the supporting frame is a self-supporting structure.
  • a further advantageous embodiment of the washing and centrifuging machine according to the present invention is characterized in that the washing drum is provided with balancing weights journalled around the drum shaft.
  • a preferred embodiment of the washing and centrifuging machine according to the invention is characterized in that said elastic means comprise helical springs, the axes of which are at an angle of a few degrees to a vertical line and in that the pivotal axis of each of the pivotal wheels co-operating with said helical springs coincides with the axis of the helical spring concerned; it is furthermore advantageous to have the vertical projections of the ascending parts of the axes of the helical springs located inside the circumference of the base plane of the machine.
  • the freedom of movement in the vertical plane is obtained by the elastic means and in the horizontal plane by the pivotal wheels and their automatic adjustment; the latter movement is not halted by elastic resetting forces.
  • the washing and centrifuging machine according to the invention permits of attaining a higher centrifugal speed, whilst the dimension may be smaller.
  • FIGURE 1 shows a sectional view of a washing and centrifuging machine according to the invention comprising a balancing system 1 of the type described in French patent specification 1,351,728. The figure shows only those parts of the machine which are necessary for a good understanding of the invention.
  • FIGURE 2 is a sectional view on an enlarged scale of the elastic connection between the pivotal wheels and the supporting base of the machine.
  • the elastic connection is formed by a spring 2, located inside a tube 3, which is secured at one end to the support 4 of the pivotal wheels 5.
  • the length of the spring 2 in the rest position exceeds the length of the tube 3.
  • the tube 3 is accommodated in a tube 6, which is closed at one end and the length of which exceeds the length of the tube 3; one of the ends of the spring 2 bears on the bottom 7 of the tube 6.
  • the open end of the tube 6 is secured to the frame 8 of the machine.
  • the axis XX is at an angle of a few degrees to a vertical line so that a definite orientation of the pivotal wheels is obtained, the supporting plane being thus enlarged and the machine being prevented from taking up a slanting position in one sense or the other.
  • the machine performs, for 3 or 4 seconds, a few vibratory movements around the shafts of the pivotal wheels, which turns slightly in one sense and then in the other, after which the balancing members become operative and the machine is stabilized.
  • a washing and centrifugal drying machine comprising a frame assembly having a base portion, a casing member secured within said frame assembly, a drum 'ice member positioned and rotatable within said casing member, and means for allowing horizontal movements of said frame assembly and for elastically supporting said frame assembly to allow free vertical movement thereof and of the enclosed casing and drum members, said elastic supporting means comprising a plurality of wheel means arranged at spaced areas of the said b se portion, each of said wheel means being pivotable about a respective given axis fixed with respect to said frame assembly, and a plurality of spring means each interposed between a respective wheel means and said base portion, said spring means each having an axis of movement c0- incident with a respective axis of said wheel means, and the said axis of said wheel means being offset from the vertical With the upper ends of said axis inclined toward the inner region of said frame assembly.
  • a washing and centrifugal drying machine as claimed in claim 1 further comprising a drum shaft supporting said drum in said casing member and load balancing members journalled around said drum shaft.
  • said elastic supporting means comprises a plurality of first tubular members secured to said base portion each at one of said spaced areas and References Cited UNITED STATES PATENTS 2,243,565 5/1941 Kimball et al. 210-365 2,275,846 3/1942 Dunham 210365X 2,984,094 5/1961 Belaietf 68--24 FOREIGN PATENTS 1,268,867 6/1961 France. 1,310,607 10/1962 France.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Description

April 1, 1969 c J, uPEuX AL v MACHINE FOR WASHING AND CENT RIFUGING LAUNDRY Filed Jan. 17. 1967 Sheet L of 2 Y. Y vu INVENTORS. CYPRIEN J. DUPEUX JAMES BELAIEFF BY AGENT c. J. DUPEUX MACHINE FOR WASHING AND CENTRIFUGING LAUNDRY Filed Jan. 17, 1967 ETAL April 1, 1969 Sheet FIG.2
IN VENTORS. DUPEUX CYPRIEN J.
JAMES BELAIEFF United States Patent Int. CI. 15061? 29/02 US. Cl. 68-24 4 Claims ABSTRACT OF THE DISCLOSURE The invention relates to machines for washing and centrifugal drying and is directed to the supporting structure thereof which permits freedom of movement of the machine in the horizontal and vertical directions thereby stabilizing its operation throughout the speed range of the rotating clothes basket. In the specific form illustrated, the frame of the machine is mounted on wheels which are pivotable about respective axes which are offset from the vertical and have their upper ends inclined towards the center of the frame. The wheels are connected to the frame bottom through an elastic coupling consisting of two interfitting coaxial tubes and a helical spring arranged within the tubes and coaxial therewith and with the axis of the mounting wheels.
The invention rel-ates to a machine for washing and centrifuging laundry, comprising a supporting frame, in which a casing and a washing drum having a non-vertical rotary shaft are accommodated, which parts are interconnected so as to be non-displaceable relative to each other.
It is known that washing and centrifuging machines should have freedom of movement in three relatively orthogonal directions in order to overcome the critical speed during the start of the centrifuge.
In known machines of this type the freedom of movement in the horizontal plane is obtained only by providing the machine with ground wheels. Machines of this kind have the advantage of small dimensions, but they have the disadvantage that in centrifuging only a low speed of rotation can be attained.
Since in the vertical plane the machine does not have a freedom of movement, it tends to jump as soon as the centrifugal forces exerted on the wet washings, not uniformly distributed along the circumference of the drum, exceed the weight of the machine, so that the machine shifts in place each time when the lack of equilibrium of the centrifugal force is in the upper part of the drum.
In practice it is found that a centrifuging speed of 300 rev./min. cannot be exceeded by machines of this kind, even if the machines are provided with ballast usually formed by cast iron blocks.
In a further known type of machines in which centrifuging speeds of higher value are attainable, the freedom of movement is obtained by suspending or supporting the assembly of the drum, the casing and the motor by elastic means to or on the external frame, which is secured to the supporting base or is supported from rollers, which then serve only for facilitating a displacement of the machine.
The use of ballast has the disadvantage that the cost price and the weight of the machines are increased and the displacement, the transport and the installation are rendered more diflicult.
The present invention provides a washing and centrifuging machine which unites the advantages of the two Patented Apr. 1, 1969 aforesaid types and which does not exhibit the disadvantages thereof.
The invention is characterized in that there are provided elastic means allowing a free displacement of the frame with the casing and the drum in a vertical sense and a device allowing a free displacement of said frame in a horizontal plane and in that by means of said device the machine bears on the ground and the elastic means establish the connection between the supporting frame and said device.
An advantageous embodiment of the washing and centrifuging machine according to the invention is characterized in that the supporting frame is a self-supporting structure.
A further advantageous embodiment of the washing and centrifuging machine according to the present invention is characterized in that the washing drum is provided with balancing weights journalled around the drum shaft.
A preferred embodiment of the washing and centrifuging machine according to the invention is characterized in that said elastic means comprise helical springs, the axes of which are at an angle of a few degrees to a vertical line and in that the pivotal axis of each of the pivotal wheels co-operating with said helical springs coincides with the axis of the helical spring concerned; it is furthermore advantageous to have the vertical projections of the ascending parts of the axes of the helical springs located inside the circumference of the base plane of the machine.
In the washing and centrifuging machine according to the invention the freedom of movement in the vertical plane is obtained by the elastic means and in the horizontal plane by the pivotal wheels and their automatic adjustment; the latter movement is not halted by elastic resetting forces.
The washing and centrifuging machine according to the invention permits of attaining a higher centrifugal speed, whilst the dimension may be smaller.
The invention will now be described more fully with reference to the accompanying drawing.
FIGURE 1 shows a sectional view of a washing and centrifuging machine according to the invention comprising a balancing system 1 of the type described in French patent specification 1,351,728. The figure shows only those parts of the machine which are necessary for a good understanding of the invention.
FIGURE 2 is a sectional view on an enlarged scale of the elastic connection between the pivotal wheels and the supporting base of the machine.
The elastic connection is formed by a spring 2, located inside a tube 3, which is secured at one end to the support 4 of the pivotal wheels 5. The length of the spring 2 in the rest position exceeds the length of the tube 3. The tube 3 is accommodated in a tube 6, which is closed at one end and the length of which exceeds the length of the tube 3; one of the ends of the spring 2 bears on the bottom 7 of the tube 6. The open end of the tube 6 is secured to the frame 8 of the machine.
According to the invention the axis XX is at an angle of a few degrees to a vertical line so that a definite orientation of the pivotal wheels is obtained, the supporting plane being thus enlarged and the machine being prevented from taking up a slanting position in one sense or the other.
During the start up to the centrifuging speed of the machine according to the invention the machine performs, for 3 or 4 seconds, a few vibratory movements around the shafts of the pivotal wheels, which turns slightly in one sense and then in the other, after which the balancing members become operative and the machine is stabilized.
What is claimed is:
1. A washing and centrifugal drying machine comprising a frame assembly having a base portion, a casing member secured within said frame assembly, a drum 'ice member positioned and rotatable within said casing member, and means for allowing horizontal movements of said frame assembly and for elastically supporting said frame assembly to allow free vertical movement thereof and of the enclosed casing and drum members, said elastic supporting means comprising a plurality of wheel means arranged at spaced areas of the said b se portion, each of said wheel means being pivotable about a respective given axis fixed with respect to said frame assembly, and a plurality of spring means each interposed between a respective wheel means and said base portion, said spring means each having an axis of movement c0- incident with a respective axis of said wheel means, and the said axis of said wheel means being offset from the vertical With the upper ends of said axis inclined toward the inner region of said frame assembly.
2. A washing and centrifugal drying machine as claimed in claim 1 further comprising a drum shaft supporting said drum in said casing member and load balancing members journalled around said drum shaft.
3. A washing and centrifugal drying machine as claimed in claim 1 wherein said wheel means comprises wheels having an axis of rotation offset relative to said offset vertical axis.
4. A washing and centrifugal drying machine as claimed in claim 1 wherein said elastic supporting means comprises a plurality of first tubular members secured to said base portion each at one of said spaced areas and References Cited UNITED STATES PATENTS 2,243,565 5/1941 Kimball et al. 210-365 2,275,846 3/1942 Dunham 210365X 2,984,094 5/1961 Belaietf 68--24 FOREIGN PATENTS 1,268,867 6/1961 France. 1,310,607 10/1962 France.
409,390 5/1934 Great Britain.
OTHER REFERENCES Ll 1,621, German printed application, Laschet, Nov. 8, 1956.
WILLIAM I. PRICE, Primary Examiner.
US. Cl. X.R. 2l0364
US609946A 1966-01-17 1967-01-17 Machine for washing and centrifuging laundry Expired - Lifetime US3435639A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR46074A FR1483756A (en) 1966-01-17 1966-01-17 Stabilization means for washing machines

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US3435639A true US3435639A (en) 1969-04-01

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US (1) US3435639A (en)
AT (1) AT279526B (en)
CH (1) CH473267A (en)
DE (1) DE1585859A1 (en)
FR (1) FR1483756A (en)
GB (1) GB1178141A (en)
NL (1) NL6700452A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109827389A (en) * 2019-01-28 2019-05-31 江苏华艺服饰有限公司 A kind of twisting formula dehydrated structure of fabric dehydration device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2445775A1 (en) * 1979-01-03 1980-08-01 Feuvray Alain HITCHING DEVICE FOR TRAILER AND TRAILER COMPRISING SUCH A DEVICE
DE4138961A1 (en) * 1991-11-27 1993-06-03 Ymos Ag Ind Produkte MACHINE FOOT

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB409390A (en) * 1933-07-14 1934-05-03 James Allan Whatton Improvements in machines for washing, dry cleaning or dyeing garments and the like
US2243565A (en) * 1936-04-03 1941-05-27 Gen Electric Washing machine
US2275846A (en) * 1936-07-24 1942-03-10 Gen Electric Washing machine
US2984094A (en) * 1957-11-08 1961-05-16 Frame Sa Washing machine
FR1268867A (en) * 1960-09-30 1961-08-04 Washing machines, automatic or not and unsealed
FR1310607A (en) * 1961-10-16 1962-11-30 Procedes Sauter Method and means for improving the stability of washing machines with centrifugal spin and horizontal axis

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB409390A (en) * 1933-07-14 1934-05-03 James Allan Whatton Improvements in machines for washing, dry cleaning or dyeing garments and the like
US2243565A (en) * 1936-04-03 1941-05-27 Gen Electric Washing machine
US2275846A (en) * 1936-07-24 1942-03-10 Gen Electric Washing machine
US2984094A (en) * 1957-11-08 1961-05-16 Frame Sa Washing machine
FR1268867A (en) * 1960-09-30 1961-08-04 Washing machines, automatic or not and unsealed
FR1310607A (en) * 1961-10-16 1962-11-30 Procedes Sauter Method and means for improving the stability of washing machines with centrifugal spin and horizontal axis

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109827389A (en) * 2019-01-28 2019-05-31 江苏华艺服饰有限公司 A kind of twisting formula dehydrated structure of fabric dehydration device

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AT279526B (en) 1970-03-10
FR1483756A (en) 1967-06-09
CH473267A (en) 1969-05-31
GB1178141A (en) 1970-01-21
DE1585859A1 (en) 1971-08-12
NL6700452A (en) 1967-07-18

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