Ventilator

Jan. 1, 1935.

1,986,176

H. ZWERLING

VENTILATOR

Filed March 18, 1933

<img file="US1986176A_D0001.tif" />

Patented Jan. 1, 193S

1,986,176

UNITED STATES PATENT OFFICE

1,986,176

VENTILATOR .

' Harry Zwerling, New York. N.Y.

Application March 18,. 1933,, Serial No. 661,425

Claims. (Cl. 98—72) showing a portion of the cradle supporting the motor corresponding, to a cut taken in line 3—3 of Figure 1;. and

Figure 4 is a fragmentary cross-section view showing a modified form of cushioned mounting for. the motor similar to that shown in Figure 1..

Referring to Figures 1. to: 3 of the drawing, there is shown a ventilating assembly 10 for a building constructed, to employ the invention. Said, assembly 10 is seen t&lt;a comprise the fob : lowing, elements: a ventilating, pipe, flue, chimney .or the like 11,—a plurality of spaced brackets 12 mounted on the upper or outlet end of ventilating pipe: 11,, each. bracket 12 being; provided with; inwardly extended.,· arms·. 12“ and outwardly extending; arms 12&amp;,r—a wind breaking shell 13 supported, on brackets 12 in spaced relation and extending; up beyond the ventilating pipe 11 the lower rim of said shell 13. extending downward a considerable distance below the:, top of the : ventilating pipe 11, said shell 13 being, composed of a lower conical- cat otherwise tapering portion 13,“, a medial cylindrical portion 13“, and an· upper conical or otherwise· tapering portion 13^c, which upper edge 13* of shell 13 extends beyond the upper end of the ventilating pipe 11. A motor 14 is, provided, having a coupling 15 for a ventilator shaft. 16 supported on ball-bearings 17 and a fan 18 secured to tmn. with said shaft, ball-bearings 17 being mounted in the lower end 30 of a housing 19 suspended from,, or forming a part of, the main motor casing. A plurality of spaced suspension brackets 19“ forms part of a. cradle 20 for the motor 12,, and, includes a cushioning assembly which, may comprise: super- 35: posed layers of cork 21,, wood 22, and felt 23

OUIMUI yxf/v «««. -___-______ bolted together by independent bolts 24 and 25,

A further object is to provide an improved. bolts 24 retaining said cork and wood layers and ' bolts, 25, said, wood and felt layers. A casing, assembly designed to protect the motor 14 from deleterious gases issuing from the ventilator pipe 11 as well as from rain is provided and is seen to comprise a lower conical shell 26 supported on arms 12“ of bracket 12, and upper conical shell 27 secured to the shell 26 and forming a peripheral gutter 28 therewith. A bell portion 29 is fitted over the motor proper and has an upper top opening 29“ protected by cap 30. A drain pipe 31 extends downward from gutter 28 to the inner edge of portion 13“ of shell 13.

Appropriate electric cables 32 extend up along ventilating pipe 11 and furnish power to motor 14.

A rubber, cloth or similar flexible gasket of conical shape 33 is inserted between the housing 19 and shell 26, said gasket 33 being held in position in any suitable manner as by flange or ring 34 and bolts 35.

The hereinabove described assembly operates in the following manner: When the motor 14 is

The present invention, relates to ventilators for buildings and, in particular, to those of the type designed to be suspended in, or at the top of a ventilating pipe, flue, chimney or the like.

It is common to mount air or electrically driven motor fans, on top of ventilating pipes. The structures, now in common use, however, have several, disadvantages;, to wit, (1) when the ventilating motor stops or is stopped,, the wind may blow downward-into the, ventilating pipe:, (2)· rotation. of the motor, fan and wind produces, considerable noise due to the. transmission of vibrations to. the ventilator· pipe upon which the motor and fan is supported, (3) the motor is generally mounted without any special protection in the path of the gases flowing, through the ventilating pipe and often is subject to damage by corrosive, hot. or moist gases present, and (4) no means are. provided·, generally, for diverting rain from the ventilating pipe.

One, of the objects of the present invention is to provide a special assembly of ventilating pipe and motor-driven (air or electrically) fan provided with means operative to prevent down drafts into, the ventilating pipe when the motor and fan are at rest.

Another object is. to provide a ventilating as_rsembly of the type and of the character described wherein means are provided for diverting rain 30. from entering the building through the. ventilating. pipe.

Anntber object is to provide a sound and shockproof cushioned support for a motor-driven fan, said support serving to damp or eliminate vibrations which might otherwise be transmitted from the motor and. fan to the building through the. ventilator pipe and the associated structures, shaped- casing enclosing, a motor and positioned to protect the latter both from deleterious gases passing through the ventilating pipe and from rain which may fall on the casing, yet permitting ventilation and cooling of the motor.

Other objects of this invention will in part be obvious and in part hereinafter pointed out.

The invention accordingly consists in the features of construction, combinations of elements and arrangement of parts which will be exemplified in the construction hereinafter described and of which the scope of application will be indicated in the following claims.

In the accompanying drawing, in which is shown several of the various possible illustrative embodiments of this invention,

Figure 1 is a vertical cross-section through one embodiment of the invention;

Figure 2 is a top plan view, partly in section, of the assembly shown in Figure 1, the section being taken on line 2—2 of the latter figure;

Figure 3 is a fragmentary bottom plan view

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1,986,176 at rest, wind striking shell 13 laterally will be deflected upward and downward by tapering portions 13^a and 13° thus causing a suction for drawing air upward through the ventilating pipe 5 11. If rain is falling, the same will be deflected by the bell portion 29 and cap 30 into gutter 28 and will drain into conduit 31 to the outside of ventilation pipe 11. — . 11/ started, ventilating fan 18 will draw the gases or vapors upwardly through the ventilating pipe 11. The gases impinging on shell,26, will be deflected outward against the inner surface of shell 13 and then upward by portion 13° of this latter shell.

It will be noted that the motor 14 is indirectly supported on brackets 12 through the intermediary of shells 26, 27 and cradle 20 but any vibrations cannot readily be transmitted from the motor 14 to pass the cradle 20 because of the cushioning action exerted by elements 21 and 23. The wood layer 12 serves merely as a non-metallic abutment against which bolts 24 and 25 may be taken up. The transmission of vibrations by the motor 14 to the ventilating pipe 11 and the structures supported thereon is further prevented by the flexible gasket 33 interposed between elements 19 and 26 in a manner Shown in Figure 1. . ' .. .

Cushioning assembly elements 21, 22, 23 may be replaced by the form of cushioning structure represented in Figure 4 wherein a rubber cush· ion 126 is; mounted between a pair of U-shaped retaining channel members 127 retained in assembled relation to cradle 120 and casing suspension brackets 19^a by bolts and screws 125 and 128. Preferably the rubber cushions are vulcanized to the channel members 127.

From the foregoing, it will be: seen that an assembly is provided wherein (1) down drafts into the ventilating pipe are eliminated when the ventilating fan is at rest, (2) rain is prevented from entering the ventilating pipe, (3) the motor is protected from deleterious or moist gases issuing from the ventilating pipe, and (4) vibrations originating in the moving parts are prevented from reaching the ventilating pipe and its associated structures.

It will thus be seen that there is provided a device in which the several objects of this invention 50 are achieved and which is ‘ well adapted to meet the conditions of practical use.

As various possible embodiments might be made of the above invention, and as various changes might be made in the embodiment above set forth, ίο it is to· be understood that the accompanying drawing is to be interpreted as illustrative and not in a limiting sense.