US1050994A

US1050994A - Ventilating-fan.

Info

Publication number: US1050994A
Application number: US66732111A
Authority: US
Inventors: Jasper E Ostrander
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-12-22
Filing date: 1911-12-22
Publication date: 1913-01-21
Anticipated expiration: 1930-01-21

Description

J. E. OSTRANDBR.

VENTILATING FAN.

APPLICATION FILED D5022, 1911.

Patented Jan. 21, 1913.

'muemtor JwPER E. USTZTANDEfi wummow 5% WM W 'the ventilating fan and a fragment ofthe out weather.

Specification-bf was. ream.

a lication filed-December a2, 1911. Serial No. 669,821.

The device is particularly adapted to be conveniently used in buildings where, after construction, the usual ventilating system has been found inadequate and it is desired to provide for a circulation of air, in the rooms, by utilizing the air exteriorly of the room or building, such convenient openings asv a window, transom windowfor the, like being used in transferring the air in continuous currents from one place to another.

The principal object of my invention is to provide a device of the character described, which, while eilicijently serving the purpose as an air circulator, retards the propagation of sound from one side of the wall to the other substantially the same as would a closed wall opening.

A further object of my invention is to render the device adjustable to'negula'te-the volume of air transferred by the device.-

In the drawings, forming a part of this specification :-'Figure 1 is an 1nterior elevation of a portion of a window frame inclosing a device embodying my invention. Fig. 2 is a cross sectional View on substantially the lines 22 of Fig, 1, Fig3 is a fragmentary elevation of a portion of wall portion. Fig. 4 is a side elevation o wall'portion it is associated wlth. In the drawings, where similar-characters.

.refer to similar parts throughout the views,

1 designates a wall portion or screen, preferably of sound proof material, which may be conveniently placed within a window casing 2, the sash 3 thereof being raised to accommodate the former and bein in abutting relation thereto, to exclude inc em- The air current producing means includes a revoluble fan 3 provided with a lglurality of blades 4. extending crosswise t e plane of rotation thereof. The fan may be rotated .by an electric motor 5, or any other desired. motion generating means, the fan being mounted on the shaft 6 of the motor.

Since it is undesirable to expose a de vice, such as a motor, to the inclemency of the weather. the wall portion 1 has a slot 7 through which the fan 3 may revolve with its plane of rotation crosswise and diagonal with respect to the plane of the wall portion,

the motor 5. then being supported on a bracket 8 secured to the wall portion 1 and wholly disposed on theprotected or interior side of the wall portion. By this arrangement, I avoidplacing the motor with the axis of its drive shaft parallel and within the plane of the wall portion 1, the-center of the fan being, however, substantially in the axis of the latter.

7 In order 'to retard the propagation of sound" from the one side of the wall to the other, I rovide a drum-like housing 9, preferably pivoted to swing about the axis of the shaft 6. These sector-like housing members may frictionally engage the walls of the slot 7 to retain a stationary position, and, as

twice the angular distance between the center lines of the blades, that is, the angular ma nitude of each of the lateral walls of eao member 10 is substantially that of the angular magnitude between the center lines of two alternate fan blades, as clearly shown in Fig. 2. In this figure, one blade is shown rammed Jan.21, i as.

ormed of sector-like portions 10 looking directly at its peripheral edge, and

wholly inclosed by the section 10, one half of each of the next adjacent blades at either side of the blade referred to is also inclosed by the same section 10, therefore, there are two blades or their equivalent closing the opening which is in communication with both sides of the wall 1 formed by the slot 7 to retard propagation of sound therethrough.

The operation of the device is' as follows:Upon rotation of the fan, air is indrawn from one side of the wall 1 and eitpelled at'the other side thereof, and, similarly air is transferred in a like manner in a counter direction. As indicated in Fig. 1, freshair is entering adjacent the upper margin of the peripheral opening of the drum-like housin 9, and foulair finding egress adjacent t e lower margin of such draw in the current, as desire bers retaining their adjusted position by. friction contact with the margins; of slot 7.

opening. To control the volume of air enterin and leaving the room, the members 10 o the housing 9 may be swung on their axes and brought/near together, or s 'aced f 21 art from veach other asdesired, an furt er, the air expelled may be'directed to flow, as desired, b manually rnovin the members 10 provi ing for ingress of air, and similarly, the members 10 roviding for egress of air, maycbe manual moved to d the mem- Inasmuch as two or more of the blades of the fan are ever within-the housing 9, at that portion thereof intermediate the transverse margins of the openingstherein, when the parts are in assembled operative .relation to each other, the sounds are not readily propagated through such obstructions andconsequently the intensity of the sound on one side of a wall, is substantially no greater than would'be if openings were entirely closed, as with a glazed sash or the like.

L'The combination with a wall ortion havin a slot, of a rotatable fan, disposedv eluding a slot, of a rotatable fan, disposed with its plane of rotation passin the slot in the wall portion and with respect to the drum-like housing for said fan disposed in said slot in said wall portion and having peripheral openings at both sides of the latthrough iagonally plane of the latter, a

ter, said housing being adapted to house two or more of the blades of the fan, at that portion of the housin intermediate the transverse margins of t e opposite peripheral opening thereof, substantially as and for the purpose set forth, and means disposed adjacent one side of the wall portion for rotatlngsaid fan.

'3. The combination with a wall portion having a slot, of a rotatable fan, including a plurality of radially extending blades disposed crosswise the plane of rotation thereof,..s'aid 'fan being disposed with its lane of rotation passing through the slot 1n the wall portion, and a housing for said fan, including oppositely disposed sectorlike portions disposed in the said slot in said wall portion, the angular magnitude of the walls of said sector-like portions being substantially equal to the angular disposition of the radial axes of two alternate fan blades, substantially as and for the purpose set forth. I

4. The combination with a wall portion, having aslot, ofa rotatable fan, including a plurality of radiallyexte'nding blades disposed crosswise the lane of rotation thereof, said fanbeing isposed with its plane of rotation passing through the slot in the wall ortion, and a housing .for said fan including sector-like port-ions oppositely disposed with respect to each other in engaging relation to the walls of the said slot in said wall portion and pivotally mounted to swing about. the axis of rotation of said fan, the angular magnitude of the walls of said sector-like portions bein substantially equal to the angular disposition of the radial axes of two alternate fan blades, substantially as and for the purpose set forth.

In testimon whereof I afiix my signature in presence 0 two witnesses.

V JASPER E. OSTRANDEB.