US1723227A - Vertical electric fan - Google Patents

Description

8- 2 s. A. XIPPAS 1,723,227

VERTI CAL ELECTRIC FAN Filed June 1927 2 Sheets-Sheet l Aug. 6, 1929. s. A. XIPPAS VERTICAL ELECTRIC FAN Filed June 7, 1927 2 Sheets-Sheet Patented Aug, 6, 1929.

7 UNITED srA'rss SOCRATES A. XIPPAS, 0F BUFFALO, NEW YORK.

VERTICAL ELECTRIC FAEI.

Application filed June 7, 1927. Serial No. 197,055.

This invention relates to improvements in ventilating fans of the verticaltype, such as disclosed in Letters Patent No. 1,57 7 ,280, and the reissue thereof.

-The primary object of theinvention is to simplify the construction of such fans, whereby the cost of manufacture is considerably reduced and the assembly, or the re moval and substitution of parts, is facili tated.

Fans of the type illustrated in said patents, include a spherical casing, and another object of the present invention is to form such casing of a pair of sections andto connect the sections together by novel joints, whiehwill not alone permit ready dismantling of the casing, but which in use, will rigidly connect the parts and prevent the same from accidentally disconnecting, due to vibration. v I

Another purpose of the invention is to furnish improved means for detachably connecting the fan casing to the motor casiz- ,i, such means functioning to lock the parts together, but permitting rapid dismom'rl'ing of the :tan casing whenever necessary.

A. still further object is to furnish novel instrumentalities for detachably mounting the motor in its casing, such instrmnentalities preventing the motor from vibrating relatively to its casing when the fan is in use.

Another object is to provide novel means for detachably connecting the rheostat and control switch within the motor casing, the

latter casing being so constructed that the motor, rheostat and switch may be introduced into the same from tie bottom, and

be readily secured in position by suitable crews or the like, the latter being freely accessible to a suitable tool when the motor casing is in inverted position.

connected together;

Fig. 5 is a. vertical sectional view of a ,ilragmcnt of the motor casing, and an elevation of'a oortion of the motor showing the incansfor mounting the motor in the casing.

Fig. 6 is an enlarged horizontal sectional view of the motor casing and motor, viewed from below;

Fig. 7 a fragmentary detail partly in vertical section of the two sections of the :tan casing, and the means for connecting them together; I

Fig. 8 tea perspective view of the impellcr Fig. 9 is a perspective view of the fan casing sections, showing the same dismantled; and a i I Fig. 10 is a vertical sectional view of the hub portion of the impeller and the shaft of the latter, showing the means for connecting the impeller to the shaft.

In the drawings, 1 indicates the fan casing which is of tubular construction, flaring toward its lower end. The wall of the casing is thickened equally spaced points to provide vertical flanges 2 which snugly engage bands 3 on the. motor when the latter is inserted into the casing from below. \Vhen the motor is placed in the casing, the upper shoulders 4c of the motor abut against projections 5 at the top of the casing, and the motor is thus prevented -from moving upwardly any further.

The lower end of the motor rests on supporting plates 6 which are connected to the under sides of the flanges 2 by means of extension screws 7, the latter being readily reached from the large end of the casing, when the latter is inverted. Due to this construction, it is obvious that the motor may be quickly detached from the casing, as soon as the screws 7 are removed.

Apertures 8 are provided at diametrically opposite sides of the casing, to permit access to the adjusting devices 9 of the motor brushes, (not shown).

The enlarged lower end of the casing is thickened internally, as shown at 10, to proc th ie fan, for cooling the motor, such air being ii.chargcd from the motor casing through neck l l of the latter.

permit the ready disconnection of the rheostat and switch assembly from the motor casing.

r the motor, rheostatand switch asiy have been connected to the motor casing, the shaft- 15 of the motor will project upwardly througn the neck 14-, and this shaft, as best shown Fig. 10, is screw threaded at its upper end, as at 16. An impeller 14 is provided with a capped hub 18, which is threaded interiorly for connection with the screw threaded end 16 of the shaft. Arms 19 project from the hub, and the upwardly and downwardly projecting blades 20 are connected to these arms.

Before the impeller is connected to the shaft, the lower half 21 of the fan casing is connected to the motor casing, and to permit this the section 21 is furnished at its lower end with a rin having at its edge, equally spaced horizontally disposed inwardly ex:- tending flanges 23. In placing the fan cassection 21 on the neck 14, the flanges 23 aligned with the notches 24 in the entersurface of the neck, and when the flanges reach the lower ends of these notches, the section 21 is turned to move the flanges .43 into grooves 25 pr vided in the thickened portions 26 of the neck. When the parts are noved into this position, they are locked together by some suitable fastening means such as a screw 27, see Fig. 4.

Owing to this construct-ion, the two casings are rigidly locked together, and vibration caused by the operation of the motor will not dislodge the fan casing.

The section 21 is of semi-spherical shape and provided at its upper ed e with equally spaced horizontal flanges 28, each having a lug 29 at one end.

The cover or other section 30 of the casing is also of semi-spherical shape, and provided at its edge with equally spaced hook-shaped projections 31 adapted to receive tl '"an 'es 28. ll hen the flanges are threaded into the hooks and the cover is turned, the parts will interlock and the lugs 29 will form stops to limit the turning movement of the section 30. As the surfaces of the parts 28 and 31 snugly engage each other, a large areaof friction surfaces will be in contact and efiectively prevent accidental loosening of the sections of the casing.

The casing is provided over its entire area with air inletopenings 32, and outlet openings 83, but only a few of these openings are shown to facilitate illustration.

In the operation of the fan, the impeller draws air into the fan casing through the motor casing, and through the polar intake openings 32, and it discharges this air gently through the openings 33.

From the foregoing, it will be seen that I have provided a ventilating fan of the vertical type, the parts of which may be shipped in knock-down condition and be readily and rapidly assembled by unskilled workmen.

li hile l have disclosed a preferred embodinient of the invention, I am aware that changes may be made in the details illustrated without departing from the splrit of the invention as expressedin the claims.

l fhatl claim and desire to secure by Letters Patent is:

1. In a ventilating fan, a tubular casing provided with spaced flanges extending in the direction of the axis of the casing, a motor having its periphery engaging said flan es, spaced plates engaging the flanges and the motor, and screws detachably conncc l the plates to the flanges.

a ventilating fan, a tubular casing, note-r in the casing supported from below, heostat and switch assembly arranged in th casing below the motor, and means accessil le through the lower end of the casing for ueiachably connecting the motor, rhcostat and switch assembly to the casing.

3. In a ventilating fan, a vertically disposed tubular casing, a motor arranged in the casing, abutting against the upper end of the latter, and having a shaft projecting through the upper end of the casing, supporting means in the casing on which the motor rests, and threadedmembers detachably connecting the supporting means to the casing.

l. A ventilating fan including a tubular motor casing flared toward its lower end, a motor of larger diameter than the upper end of the casing, located within the latter and having a shaft projecting through the upper end of the casing, movable supporting means arranged in the casing and on which the motor rests, a rheostat and switch assembly arranged in the lower end of the casing *ncans detachably connecting said assembly to the casing, an impeller detachably mounted on said shaft, and a sectional fan enclosing the impeller and detachably connect d to the upper end of the motor casing.

ln testimony whereof I aflix my signature.

SOCRATES A. XIPPAS.

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