US2732702A - Tumbler type washing machines - Google Patents

Tumbler type washing machines Download PDF

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Publication number
US2732702A
US2732702A US2732702DA US2732702A US 2732702 A US2732702 A US 2732702A US 2732702D A US2732702D A US 2732702DA US 2732702 A US2732702 A US 2732702A
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US
United States
Prior art keywords
liquid
drum
compartment
washing machines
shell
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Expired - Lifetime
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English (en)
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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
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D06F37/06—Ribs, lifters, or rubbing means forming part of the receptacle
    • D06F37/065—Ribs, lifters, or rubbing means forming part of the receptacle ribs or lifters having means for circulating the washing liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/14—Twisting
    • B21D11/15—Reinforcing rods for concrete

Definitions

  • This invention relates to laundry washing machines and more especially to a washing machine of the tumbler type having an outer casing to receive a liquid and an inner partly perforated drum rotated on a horizontal axis and provided with blades or lifters extending toward or close to the shaft of the drum.
  • the casing of such a machine is filled with liquid up to a level at which the lower segment of the rotating or oscillating drum is permanently immersed in the liquid, then the effectiveness of the operation depends upon the rate at which the liquid is alternately absorbed by and drained from the articles under treatment. This holds good not only for the washing operation proper, but also for the subsequent rinsing operation with clean water. Any increase of the amount of liquid absorbed by the articles and drained therefrom during one complete revolution of the drum, i. e. any increase of the velocity at which the liquid is transported, means a reduction of the time during which the articles are to be treated in the machine and, consequently, increased economy.
  • Figure 1. is a vertical, cross section of the washing machine
  • Figure: 2 is a view, similar to Figure 1, show ing a modified. form of the washing machine.
  • the washing machine comprises a. casing 1 and a drum. 2 supported for horizontal rotation upon a central shaft 2b.
  • the drum is divided into four compartments, I, II, ill, and IV, which are separated by partitions 3- extending from the shell of the drum to the shaft 21) thereof.
  • the arrow A indicates the direction wherein the drum is to be driven.
  • Eachv partition 3 is concave as seen in the direction of rotation and so formed that each compartment has a relatively wide leading portion and a relatively narrow following portion.
  • each compartment Secured to the shell portion of each compartment, on the outer side thereof and along a generatrix substantially centrally between the axial edges of said portion, are two curved plates 4a, 4b extending, concentrically with the shell, in forward and in rearward direction, respectively, so as to form two hoods, which are open on the front side and on the rear side, respectively.
  • the segmental parts of the shell covered by hood 4a are indented to define, together with the hood, an enlarged pocket 5.
  • the indented portions include an imperforate rear portion 2a and a perforate forward portion 2c.
  • hood 4b prevents liquid in the casing from flowing into said narrower portion, so that the articles therein are adapted to yield a considerable part of the spent liquid absorbed thereby, said liquid returning to the casing owing to the suction created by said hood.
  • the pocket 5 of the compartment under consideration has partly been filled with fresh liquid during the time wherein its hood 4a, acting as a scoop, previously moved through the fresh liquid in the casing. During further rotation of the drum, the fresh liquid in the pocket 5 is discharged through the perforate portions 2c onto the articles, which thereby absorb a considerable amount thereof, until the compartment again assumes the position shown in Fig. l and the described cycle is repeated.
  • the free marginal portion 40 of the plate 4a is bent radially outwards so as to radially project with respect to the free marginal portion 4d of the plate 4b.
  • it is provided with an axial slot 6 adapted to divert the spent liquid discharged by the hood 4b to the liquid space of the casing and thus to cause it to by-pass the pocket 5.
  • said outwardly bent marginal portion 4c of the plate 4a intensifies the scooping action of said plate.
  • Fig. 2 illustrates a machine similar to the one shown in Fig. 1, it being understood however that the hood 4a of each compartment has a flap valve 7 hinged at 8 to its free edge 40 and adapted to close the mouth of the pocket 5 of the corresponding compartment whenever said pocket is in position to discharge the fresh liquid therein, through its perforated Wall, into said compartment; see the position of said flap valves 7 corresponding to compartments II and III.
  • a washing machine comprising a stationary casing having a horizontal shaft, a shell mounted within the casing for rotation in one direction about said shaft, said shell being subdivided into a plurality of segmental compartments by partitions which are concave in cross-section as seen in the direction of rotation of the shell, said partitions extending from the shell inwards to the shaft, the shell segment of each compartment being covered by two spaced scoops extending in opposite circumferential direction to constitute a leading scoop and a trailing scoop, each compartment comprising individual portions defined by spaced apertures in the shell segment thereof, and the free edge of the leading scoop of a compartment projecting outwards in radial direction from the axis of the shaft relative to the free edge of the trailing scoop of the same compartment.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
US2732702D 1951-01-02 Tumbler type washing machines Expired - Lifetime US2732702A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL1051531X 1951-01-02
NL703124X 1951-01-02
NL307301X 1951-01-02

Publications (1)

Publication Number Publication Date
US2732702A true US2732702A (en) 1956-01-31

Family

ID=30449210

Family Applications (1)

Application Number Title Priority Date Filing Date
US2732702D Expired - Lifetime US2732702A (en) 1951-01-02 Tumbler type washing machines

Country Status (4)

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US (1) US2732702A (en(2012))
BE (1) BE508078A (en(2012))
CH (1) CH307301A (en(2012))
NL (1) NL74095C (en(2012))

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE247725C (en(2012)) *
DE279067C (en(2012)) *
US107991A (en) * 1870-10-04 Improvement in combined horse-powers and baling-presses
US110749A (en) * 1871-01-03 Samuel de veau
US115325A (en) * 1871-05-30 Improvement in washing-machines
US130780A (en) * 1872-08-20 Improvement in washing-machines
US373861A (en) * 1887-11-29 Washing-machine
US1995966A (en) * 1931-06-04 1935-03-26 Delemme Cyrille Arthur Apparatus for the conditioning of substances

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE247725C (en(2012)) *
DE279067C (en(2012)) *
US107991A (en) * 1870-10-04 Improvement in combined horse-powers and baling-presses
US110749A (en) * 1871-01-03 Samuel de veau
US115325A (en) * 1871-05-30 Improvement in washing-machines
US130780A (en) * 1872-08-20 Improvement in washing-machines
US373861A (en) * 1887-11-29 Washing-machine
US1995966A (en) * 1931-06-04 1935-03-26 Delemme Cyrille Arthur Apparatus for the conditioning of substances

Also Published As

Publication number Publication date
BE508078A (en(2012))
CH307301A (fr) 1955-05-31
NL74095C (en(2012))

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