Title:
Washing apparatus
United States Patent 2412270


Abstract:
My invention relates to clothes washing apparatus and has for an object to provide improved apparatus of this kind. A further object of the invention is to provide, in a domestic clothes washer having a shelf structure upon which the fabrics to be treated are collected prior to depositing...



Inventors:
Johnston, William A.
Application Number:
US52014844A
Publication Date:
12/10/1946
Filing Date:
01/29/1944
Assignee:
WESTINGHOUSE ELECTRIC CORP
Primary Class:
Other Classes:
68/13R, 68/210, 177/144, 177/245, 200/85R, 312/223.5, 340/666, 362/89, 414/680
International Classes:
D06F39/14
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Description:

My invention relates to clothes washing apparatus and has for an object to provide improved apparatus of this kind.

A further object of the invention is to provide, in a domestic clothes washer having a shelf structure upon which the fabrics to be treated are collected prior to depositing the fabrics in the machine, an indication to the operator when the weight of the bundle of fabrics upon the shelf approximates the capacity of the machine.

These and other objects are effected by my invention as will be apparent from the following description and claims taken in connection with the accompanying drawing, forming a part of this application, in which: Fig. 1 is a perspective view of one form of washing machine constructed and arranged in accordance with my invention; Fig. 2 is a side view of the machine shown in Fig. 1 with portions thereof shown in section; and Fig. 3 is a sectional view through a switch structure shown in Pig. 2.

In the operation of domestic clothes washers and particularly washing and centrifuging machines which are automatically cycled through predetermined steps in a washing program, it is desirable that the weight of the load of fabrics being treated approximate the rated capacity of the machine. The washing operation is inefficiently effected if the load is less than the capacity of the machine and, if the load exceeds the capacity of the machine, the fabrics may be poorly washed and centrifuged. The operator, as a general rule, loads the machine until, in his or her opinion, the load is proper and this guesswork usually results in an improper load. In accordance with my invention, the door of the machine is employed as a shelf for receiving the load of dry fabrics and an indicator is energized when the proper weight of fabrics is upon the shelf.

Preferably, a light is carried by the tub casing and controlled by a switch actuated by the shelf.

The switch is biased to its open position and is closed by the shelf when the weight of fabrics thereon approximates the rated capacity of the machine.

Reference will now be had to the drawing wherein I have shown my invention applied to a domestic washing machine of the type disclosed in the patent of William J. Russell, No. 2,296,265, which is assigned to the assignee of the present invention. This machine includes a tub, generally shown at 10, for enclosing a body of washing water and the means (not shown) for washing the fabrics in the body of water. The tub 10 is open at its front for the ingress and egress of the fabrics to be treated and the open end of the tub is closed by a suitable, gasketed, hinged door I I.

The tub 10 is enclosed within a casing structure 12 having a front wall, the upper portion 13 of which is inclined and provided with an opening 14 in registry with the door II. When the washing machine is not in use, the opening 14 is closed by hinged door or cover 15. The latter is supported by a pair of brackets 16 which extend through slots 16a in the wall 13 and are pivoted or hinged, as shown at 17, to the casing 12. During periods when the machine is in operation, the door 15 is disposed in a substantially horizontal position for defining a shelf at the front of the washer upon which the fabrics to be treated are placed before being deposited in the machine.

In accordance with my invention, a signaling device, such as, for example, an indicating lamp 18 is disposed on the front side of the machine, which device is energized when the weight of the dry fabrics placed on the shelf 15 approximates the capacity of the machine. The lamp 18 is connected in an electrical circuit 19 controlled by a switch structure, generally indicated at 21 and actuated by the door 15. A sectional view of the switch is shown in Fig. 3, to which reference will now be had.

The switch structure 21 includes a casing 22 which encloses stationary and movable switch contacts 23 and 24 which are connected to suitable binding posts, as shown. The movable contact 24 is carried by a resilient support 24a which biases the contact 24 away from the contact 23 at 35. all times. One end of the casing 22 slidably supports a plunger 25, the inner end of which engages a seat 26 for a compression spring 27. The opposite end of the spring bears against a seat 28 which is supported by an adjusting screw 29. The latter may be adjusted for properly biasing the spring 27. A screw driver insertable through an opening 29a in the casing 12 is preferably employed for this operation. A shoulder 31 limits outward novement of the plunger 25. Engagement of the contact 24 with the contact 23 is effected by a finger 30 carried by the seat 26 and movable into engagement with the resilient support 24a when the finger 30 is moved to the left as described hereinafter.

As shown in Fig. 2, the switch structure 21 is disposed so that the plunger 25 is engaged by an arm 32 formed on one of the brackets 16 when the door 15 is moved to its horizontal position.

The bias of the spring 27 is such that the weight of the door is insufficient to compress the spring 27 and effect the closing of the contacts 23 and 24. However, when a predetermined weight of fabrics, for example, 9 pounds is deposited upon the door 15, the weight of the fabrics and the -door will compress the spring 27 and move the finger 30 sufficiently to close the contacts 23 and 24, whereupon the indicating light 18 is energized.

This indication will notify the operator that the weight of the bundle approximates the capacity of the machine. The inner door I is then opened and the bundle of fabrics is deposited in the tub structure 0 for washing.

It will be apparent from the foregoing description that I have provided an inexpensive and positive signaling mechanism for use with a clothes washing machine which will notify the operator when the weight of fabrics to be loaded in the machine is optimum for efficient treatment of the fabrics. The advantages of washing and centrifuging the proper weight of fabrics have been set forth heretofore.

While I have shown my invention in but one form, it will be obvious to those skilled in the art that it is not so limited, but is susceptible of various changes and modifications without departing from the spirit thereof, and I desire, therefore, that only such limitations shall be placed thereupon as are specifically set forth in the appended claims.

What I claim is: 1. In apparatus for cleaning fabrics or the like, the combination of a tub for receiving the fabrics to be cleaned, a wall arranged at the front of the tub and having an access opening therein for the ingress of the fabrics to the tub, a hinged door for closing the opening and movable to an open, generally horizontal position for defining a shelf for the reception of the dry fabrics prior to their admission to the tub, an indicator to be rendered active when the weight of I the dry fabrics on the door approximates a predetermined value, and means responsive to said predetermined weight of fabrics upon the door for energizing said indicator.

2. In apparatus for cleaning fabrics or the' like, the combination of a tub for receiving the fabrics to be cleaned, a wall arranged at the front of the tub and having an access opening therein for the ingress of the fabrics to the tub, a hinged door for closing the access opening and movable to an open, generally horizontal position for defining a shelf for the reception of the dry fabrics prior to their admission to the tub, a member movable with the door, an indicating lamp, a switch for controlling energization of the lamp, said switch being engaged by said member in the open position of the door and actuated to its closed position by said member in response to a predetermined weight of fabrics upon the door and a spring biasing the switch to its open position.

WILLIAM A. JOHNSTON.