US1434640A - Device for cleaning motors - Google Patents

Description

a. ,WENCKER.

DEVICE FOR CLEANING MOTORS. I APPLICATION HLED JULY 19, 1920.

INVENTOR.

GUSTA VE WENCKER,

I 2x I 4.4 I I I f v 4 \ww I HIS ATTORNEYS.

Patented Nov. 7, 1922.

Patented Nov. 7, 1922.

UNITED STATES PATENT OFFICE.-

GUSTAVE WENCKER, ST. LOUIS, MISSOURI.

nnvrcn roe CLEANING morons.

Application filed July 19, 1920. Serial No. 397,381.

T all whom it may concern:

Be it known that I, Gus'ravn VVENCKER, a citizen oftheUnited States, and resident of St Louis, Missouri, have invented a new 6 and useful Device-for Cleaning Motors, of

which the following is a specification.

This invention relates to a device for cleaning motors, and'it comprises mechanism operated by the motor for driving air free from dust and dirt across the" motor to prevent accumulations of dust and dirt in or on the motor.

The object of the invention is to provide a device for straining the air and driving the strained air across the motor to prevent dust and dirt from settling and accumulating in or on the motor.

Another object is to provide a device for the purpose mentioned comprising a fan op erated by the motor to drive the air across the motor, in combination with an element for preventing the fan from interfering with proper lubrication of the bearings.

Other objects will appear from the following description in which reference is made to the drawing showing the invention, and in which Fig. 1 is a view showing the device in connection with a motor, portions of the device being in section. In this view the strainer is rotated by the motor.

Fig. 2 is a similar view of a modified construction in which the strainer is stationarily supported.

Fig. 3 is a similar view in which the fan is located within the pulley driven by the motor.

Fig. 4 is an elevation of the pulley and motor shown in Fig. 3, the strainer device and its support being omitted.

As shown in Fig. 1, the motor 1 drives a shaft 2 upon which the pulley 3 is mounted, whereby power is transmitted from the motor to a driven mechanism not shown. In the embodiment shown in Fig. 1, the shaft 2 is extended from the motor on the side opposite from that on which the pulley 3 is supported, and a fan 4 is attached to the extended portion of said shaft. A fan 4 is constructed and arranged to drive the air toward the motor and thereby prevent dust and dirt from settling and accumulating upon the motor when the motor is running. :The fan is also effective to blow from the motor any dust and dirt which settles thereon when the motor is stationary or idle. A disc 5 is supported between the fan and the motor andsaid disc is of sufiicient size to prevent the'motor from driving air into the motor bearings. In this way the fan is prevented from interfering with proper lubrication of the motor.

11: is preferable to drive clean air across the motor. Toaccomplish thisresult it is desirable to strain the air in order to prevent dirt and dust from being driven against or onto the motor by the fan. i As shown in Fig. 1 a casing. 6 is supported upon the shaft 2 and rotated thereby. Said casing encloses the fan so that all of the air driven toward the motor by the fan comes through the casing. The outer end of the casing is preferably open and supports a frame 7 covered by a section 8 of screen or cloth or other suitable material, through which the air may be drawn when the fan is in operation. The screen or cloth 8 forms a strainer which removes the dirt and dust from the air, so that the fan only drives clean air across the motor.

Since the casing 6 which supports the screen revolves with the shaft 2, it is apparent that there will be no considerable accumulations of dust and dirt upon the screen, but that such accumulations will be thrown off by centrifugal force.

In the construction shown in Fig. 2, the casing 6 is stationarily supported and does not revolve. The casing 6 in Fig. 2 is provided with a frame 7 and a strainer 8 similar to that shown in Fig. 1. Otherwise the construction and arrangement shown in Fig. 2 are the same as the construction and arrangement shown in Fig. 1 and above described.

In the construction shown in Figs. 3 and 4, the pulley 9 by which the motor transmits power to the driven mechanism, encloses a series of fan vanes 10 Which drive air toward the motor. sity of extending the shaft on the opposite side of the motor. The casing 11, shown in Fig. 3, with its frame 12 and strainer 13 are stationarily supported, as in Fig. 2, in which construction it will be seen that only clean air is driven to the motor.

In the forms shown in Figs. 1 and 2 the fans not only serve to clean the motor, but also serve to blow the dust from the belt driven by the pulley 3, so that the belt is This eliminates the neces-- also kept in a clean condition. In the construction shown in Fig. 3 the fan operates only against the motor.

Other variations than those shown and described will readily suggest themselves to those skilled in the art to which this invention relates. I do not restrict myself to unessential particulars, but what I claim and desire to secure by Letters Patent, is

1. The combination with a motor, ashaft driven by the motor, and a belt pulley on the shaft at one side of the motor, of a case supported independently of the motor in position to leave an open space between the motor and the inner end of the case for the passage of air across the outer surfaces of the motor, a fan attached to the shaft within the case near said space and arranged to drive air through said space against. and acrossv the outer surfaces of the motor and the pulley, and a screen supported across the outer end of the case.

2. The combination with a motor, and a shaft driven by the motor, of a case supported independently of the motor having its inner and outer ends open and in position to leave an open space between the in ner end thereof and the motor for the passage of air across the outer surfaces of the motor, a fan attached to the shaft a short distance from the motor and arranged to drive airthrough said space across'the outer surfaces of the motor, a frame extending from the outer end of the case and having side and end openings, and a screen covering all of the openings in said frame.

' 3. The combination with a motor, and a shaft driven by the motor, of a case supported independently of themotor and leaving an open space between its inner end and the motor for the passage of air across the outer surfaces of the motor, a fan attached to the shaft within said case and arranged to drive air through said space across the outer surfaces of the motor, a plate between the fan and the motor preventing the fan from driving air into the shaft bearings, and a screen supported across the outer end of said case. i a .v

. GUSTAVE VVENCKER.

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