US1976897A

US1976897A - Air circulating fan mounting

Info

Publication number: US1976897A
Application number: US655398A
Authority: US
Inventors: Sievert Ralph; Melchior J Cordes
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-02-06
Filing date: 1933-02-06
Publication date: 1934-10-16
Anticipated expiration: 1951-10-16

Description

Oct. 16, 1934. R. SIEVERT El AL AIRCIRCULATING FAN MOUNTING Filed Feb. 6, 1935 Patented Oct. 16, 1934 UNITED STA TES .PATENT OFFICE 1,976,897 .sm CIBCULAT/ING FAN MOUNTING Ralph Sievert and Melchior J. Cordes, Carroll,

Iowa

' Application February 6, 1933, Serial no. 655,398 50mm. (c ats-1c for a fan, such as one driven by an electric motor; or for a motor whether used for a fan or for other. purposes, the mounting means being such as 'to efiectively prevent the transmission of vibration from the fan or motor to the member on which the fan or motor is mounted.

More particularly, it is our object to provide a motor support and sheets of resilient material, such as rubber, having their centers secured to the ends of the motor support and their edges anchored to supporting members, the sheets being originally flat, but when mounted, being distorted to a substantially conical shape whereby they are placed under tension to support the motor and efiectively support it in a resilient manner as well as prevent the transmission of vibration from the motor to the members to which the sheets are anchored.

Still a further object is to provide a mounting especially adapted for mounting an air:circulat-. 'i'ngfan in a cold air duct of a hot air furnace system, the manner of mounting being such as to provide for easy installation.

Still a further object is to provide a motor mounting in the form of resilient sheets on the ends of an adjustable mounting bar,'the edges of the sheets being secured to the edges of openingsin a cold air duct and the bar being adjusted to such a position as to place \therubber sheets under tension.

With these andother objects in view our invention consists in the construction, arrangement.

and combination of the various parts or our device, whereby the objects contemplated'are at-.

tained, as hereinafter more fully set forth, pointedout'in our claims, and illustrated panying drawing, in which:

in the accom- Figure 1 is a vertical sectional view through a cold air duct showing our aircirculating tan mounting means associated therewith, the left end or the figure showing parts in section. Figure 2 is a plan view of the'same. s Figure 3 is a, viewsimilar to Figure 1 showing the vmounting installed in -a slightly different type ofcold air duct; and

.On the accompanying drawing, we have usedthe reference numeral 10' to indicate a conduit includes shortening Figure 4 is a perspective view or a rubber sheet defining a cold air duct/such as used in the return system of a hot air furnace. In Figure 1, an all metal duct is shown. It will be obvious that it has a top, a bottom and two sides.

When our air circulating fan mounting is used,

openings 12 are cut in the sides of the conduit 10 so that the fan A and the mounting means B can be inserted through either of the openings. The fan A preferably comprises a fractional horse-power motor 14 with a fan blade. 16 mount- The mounting B comprises a pair of clamp bars 18 having semi-circular portions 18a, bars '20 and angle clips 22. The

bars

18 and 20 are slotted as clearly shown on the drawing and a .clamp bolt 24 is associated with them. The clips 22 are riv,-

eted to the ends of the bars 20.

Substantially rectangular sheets 26 are secured at their centers to the clips 22. These sheets are originally fiat. Their edges are adapted to be secured to the conduit 10 adjacent-the edges of the s openings 12 therein. For this purpose, openings. 28 may be punched in the duct surrounding the openings 12 and hardened screws 30 may be screwed into the punched openings and ,will form their own threads. Metal cover plates 34 are adapted to be interposed between the heads of the screws 30 and the edges of the sheets 26. The motor 14 beats somewhat when energized.

It is desirable to have a band of rubber 36 or other resilient material interposed, between the motor and the c g p bars 18. To prevent thetransmission of h t from the motor 14 to the rubber 36, we provide a layer of insulation 38, such as asbestos.

Originally the bars 18 can be formed" in the dotted line shape shown in Figure 1. Then when they are brought to their installed position on opposite sides of thebar- 20 and the bolt 24 is tightened they will efiectively clamp the motor 36 permitting 14 into position, the rubber hand some slight variation in dimensions.

Withthe clamp bolts 24Jirst installed loosely,

the rubber sheets 26 would assume the dotted line 1 position shown in Figure 1. Proper installation bar B so that the rubber sheets 26 assume a substantially conical shape, as clearly shown and they are thus placed under tension to support the tan A. When under tension, they provide an eflfective support and also aneflective means to the length or the mounting 9' O 2 prevent the on of vibration from the openings, outside cover plates for said sheets and mounting. bar B to the conduit 10. said openings andmeans for securing said cover In Figure 3, we have canbe applied to a cold air duct defined by joists 11, a iiojor 13 and sheet metal 10a. Openings 12a are cut in the joists .11, the same as theopenings 12 in the sides of the conduit 10 in Figure 1-.

The sheets 26 and cover plates 34 are then used, wood screws a being used insteadof the metal screws30. 7

'Iheuse of a rubber sheet distorted to substantiaiJ-y conical sh p as shown'in Figure 4 and thus placed under tension, either by the weight of the motor or by the shortening-oi the distance between the ends or a moimting which is secured 'to the sheets, provides an effective noiseless mounting especiallypadapted for cold air ducts.

Some changes maybe made in the construction and arrangement or the parts of our device without departing from the realspirit and purpose oi our invention, and it is our intention to cover ,by our claims, any modified forms of structure or use of mechanical equivalents, which may be reasonably included-withintheir scope. We claim as ourinvention:

1. For use with circulatingtama ran mounting comprising amounting bar adapted-to span the air duct, or a conduit having openings in opposite sides thereof, resilient sheets having their centers securedto ing bar and their edges secured to. sai'dconduit adjacent the edgesotv said openings and outside cover plates for covering both said sheets and said openings,

-2. For use with anaireirculating tan, a ran mounting comprising a mounting bar adapted to span the air duct of aconduit having openings in opposite sides thereof, resilient sheets having their centers secured to the ends of said mounting bar and their edges overlami m the edges 01 said shown how the invention pla the ends or said mount-- tee and said sheets to said conduit adjacent the edges of said openings with said cover plates concealing and protecting said sheets. a

3. For use with a tan, a tan mounting comprising a moimting bar adapted to span the air duct '0! a conduit having openings in opposite sides thereof, resilient sheets having their centers tothe ends oisaid mounting bar and their edges secured to said conduit adjacent the 4 edges -.ad.iuz-:tal.' le-as to length to vary the distance beof said openings, said mounting bar being tween its ends and thereby the tension on the sheets and cover plates for said sheets and said openings. I

4. For use with an air circulatin ian, a-fan mounting comprising a mounting bar adapted to spanvthe air duct of a conduit having p ningslin opposite sides thereof, resilient sheets hav- I ing their centers secured to the ends or said mounting conduit adjacent the edges of said openings, cover. plates for both said sheets and said openings, said moimtingbar being of compound construction and the elements thereof having slots and clamping bolts extending through said slots whereby the distance between the ends 0! saidmounting bar may be varied to vary the tension on the sheets. 7

5. Motor mounting means comprising a support for a motor and two initilally'flat sheets of bar and their edges secured tosaid resilient material each having their centers se- -cured-to the engls thereof and theiredges anchored, the length .0: said support relative to the distance between the anchored edges of said MIELCHIOR J. CORDES.