US3000483A - Clutching device for washing and drying machines - Google Patents

Clutching device for washing and drying machines Download PDF

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Publication number
US3000483A
US3000483A US856484A US85648459A US3000483A US 3000483 A US3000483 A US 3000483A US 856484 A US856484 A US 856484A US 85648459 A US85648459 A US 85648459A US 3000483 A US3000483 A US 3000483A
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US
United States
Prior art keywords
washing
drum
driving
arms
speed
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
US856484A
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English (en)
Inventor
Coenders Johann
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DEC17999A external-priority patent/DE1093771B/de
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3000483A publication Critical patent/US3000483A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D43/00—Automatic clutches
    • F16D43/02—Automatic clutches actuated entirely mechanically
    • F16D43/04—Automatic clutches actuated entirely mechanically controlled by angular speed
    • F16D43/14—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members
    • F16D43/18—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members with friction clutching members
    • 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
    • D06F37/30—Driving arrangements 
    • D06F37/36—Driving arrangements  for rotating the receptacle at more than one speed

Definitions

  • a driving mechanism for washing and centrifuging machines has therefore become known in which the drum is driven at the differing speeds required for washing and centrifuging by means of a driving motor which operates only over a small speed range, for example a polereversible motor, and which operates through either one of two reduction gear trains arranged in parallel.
  • a centrifugally operated control device automatically causes the motor to drive through one gear train or the other in dependence on the speed of the driving motor.
  • the centrifugally operated control device automatically effects the changing over of the gearing in dependence on the speed of revolution of the drive motor.
  • the present invention relates to a washing machine having a driving mechanism of this nature.
  • the centrifugally operated control device comprises centrifugal control weights radially movably mounted on members fixed to a shaft which rotates at a speed dependent on that of the motor, the weights being acted upon by springs in a direction opposite to that of the centrifugal forces, and two driving rings connected one to each of the gear trains and arranged to co-operate with the centrifugal weights, the strength of the springs being such that at a lower speed of rotation of the shaft the weights are moved inwardly by the springs and contact one driving ring to transmit a drive from the shaft to one reduction gear train and at a higher speed of rotation of the shaft the weights are moved outwardly against the springs by centrifugal force and contact the other driving ring to transmit a drive from the shaft to the other reduction gear train.
  • the rings are in the form of drums which are rotatably mounted side by side on the shaft and enclose the members fixed to the shaft, the members being radially extending arms on the ends of which the weights in the form of two-armed levers are pivoted, the arms being of unequal weights, the lighter of which lie inside one drum and are urged outwards by springs and the heavier of which are axially ofiset from the lighter arms and lie inside the other drum.
  • FIGURE 1 is a side elevation of the centrifugally operated control device with parts removed;
  • FIGURE 2 is a section as seen in the direction of the arrows on the line AA in FIGURE 1;
  • FIGURE 3 is a side elevation of a part of the device shown in FIGURES 1 and 2; and,
  • FIGURE 4 is a plan of the part shown in FIGURE 3.
  • FIGURES 1 and 2 four driving arms 1 of the centrifugally operated control device are rigidly connected on a shaft 2 of the driving motor, which is not shown in the drawing.
  • a two-armed centrifugal weight lever 4 is pivotally mounted on the end of each of the driving arms 1 by means of a bolt 3.
  • the form of the centrifugal weight levers is indicated in FIGURES 3 and 4.
  • the arms 5 of the levers are lighter than the arms 6, and each of the lighter lever arms 5 is acted upon by a radially disposed compression spring 7.
  • Driving drums 8, 10 which are rotatably mounted on the driving shaft 2., are disposed one on each side of the driving arms 1.
  • each centrifugal weight lever 4 are axially offset from one another as seen in FIGURE 4, in such a manner that each arm can lie with its outer surface against the inner surface of its associated driving drum 8 or 10.
  • the light lever arms 5 are inside the inner circumference of the driving drum 8 towards which they are pressed by the compression springs 7.
  • the driving shaft 2 is frictionally connected to the driving drum 8 and, by way of a toothed wheel 9 integral with the drum 8, the rotation of the motor, for example 750 revolutions per minute, is transmitted with the necessary speed reduction for the washing process to the washing drum, which is not shown.
  • the compression in the springs 7 is such that the pressure required between the arms 5 and the driving drum 8 to transmit the power of the washing drum is produced and in addition the centrifugal force on the heavier arms 6 produced at a motor speed of 750 revolutions per minute is overcome.
  • the driving motor which is preferably a two-speed or variable speed motor which may also be reversible, is switched over from 750 to 1500 revolutions per minute by changing the speeds, then the heavier arms 6 of the centrifugal weight levers 4 will be pressed against the driving drum 10 because the springs 7 are overcome by the increased centrifugal force on the arms 6 which is proportional to the square of the speed of revolution of the shaft 2.
  • the shaft 2 is frictionally connected to the drum 10 and the speed of the motor of 1500 revolutions per'minute is transmitted with the necessary reduction in speed, through a toothed wheel 11 on the drum 10 to the washing drum which now carries out the centrifugal drying process.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
US856484A 1958-12-06 1959-12-01 Clutching device for washing and drying machines Expired - Lifetime US3000483A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEC17999A DE1093771B (de) 1958-12-06 1958-12-06 Automatische Kupplung fuer Waschmaschinen mit einer zum Waschen und Schleudern benutzten Trommel
DE862522X 1958-12-06
DE3000483X 1958-12-06

Publications (1)

Publication Number Publication Date
US3000483A true US3000483A (en) 1961-09-19

Family

ID=30448782

Family Applications (1)

Application Number Title Priority Date Filing Date
US856484A Expired - Lifetime US3000483A (en) 1958-12-06 1959-12-01 Clutching device for washing and drying machines

Country Status (4)

Country Link
US (1) US3000483A (enrdf_load_html_response)
GB (1) GB862522A (enrdf_load_html_response)
LU (1) LU37972A1 (enrdf_load_html_response)
NL (1) NL245473A (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107542810A (zh) * 2017-08-31 2018-01-05 芜湖禾丰离合器有限公司 一种新型弹簧离合器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2275046A (en) * 1940-05-15 1942-03-03 Salsbury Corp Clutch
US2639794A (en) * 1950-05-26 1953-05-26 Gen Electric Drive clutch for washing machines or the like
US2881633A (en) * 1956-07-19 1959-04-14 Gen Electric Combination washer-dryer drive mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2275046A (en) * 1940-05-15 1942-03-03 Salsbury Corp Clutch
US2639794A (en) * 1950-05-26 1953-05-26 Gen Electric Drive clutch for washing machines or the like
US2881633A (en) * 1956-07-19 1959-04-14 Gen Electric Combination washer-dryer drive mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107542810A (zh) * 2017-08-31 2018-01-05 芜湖禾丰离合器有限公司 一种新型弹簧离合器

Also Published As

Publication number Publication date
LU37972A1 (enrdf_load_html_response)
GB862522A (en) 1961-03-08
NL245473A (enrdf_load_html_response)

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