US2700500A - Fan cabinet - Google Patents

Description

C. E. WREN FAN CABINET Jan. 25, 1955 2 Sheets-Sheet l Fi1 ed Aug. 10, 1950 3/% HTTo Jan. 25, 1955 c. E. WREN 2,700,500

FAN CABINET Filed Aug. 10, 1950 2 Sheets-Sheet 2 AVA/EH70)? CL #06 E. Wes/v,

United States Patent FAN CABINET Clyde E. Wren, Jefferson City, Mo. Application August 10, 1950, Serial No. 178,620 2 Claims. Cl. 230-273 The present invention relates generally to cabinets, and more particularly to. a novel fan cabinet incorporating improved adjustment features for mounting the cabinet in a window or the like and improved fan mounting features.

Briefly, the present novel fan cabinet includes a casing which surrounds the fan blades and motor and an adjustable panel for mounting the assembly in a window or the like. The panel includes sliding end members. An improved mount for the fan and improved mounts for disposing the assembly in a window or the like are provided. i

Therefore, an object of the present invention is to provide a novel fan cabinet which incorporates improved mount adjustment features.

Another object is to provide a novel fan cabinet which incorporates an improved mount for a separate motor and for its driven fan blades, the latter being driven by the former through a belt.

Another object is to provide a novel fan cabinet which includes improved mounting and demounting features which render the fan cabinet easily installed and readily removable.

Other objects are to provide a novel fan cabinet which is of sturdy construction and adapted for long usage, which is of relative inexpensive construction, which finds wide usage, and which otherwise overcomes deficiencies existing in fan cabinets presently available.

The foregoing and other objects and other advantages are apparent from the following description taken with the accompanying drawings, in which:

Fig. 1 is a front elevational view of a fan cabinet incorporating the teachings of the present invention, shown mounted on a window sill, it being understood that the louvered face of the fan cabinet faces toward the room;

Fig. 2 is a rear elevational view thereof mounted in the same setting as shown in Fig. 1;

Fig. 3 is an enlarged vertical transverse cross-sectional view taken on the line 3-3 of Fig. 1;

Fig. 4 is an exploded front elevational view of the adjustable panel;

Fig. 5 is an enlarged vertical transverse cross-sectional view taken on substantially the line 5-5 of Fig. 2;

Fig. 6 is an enlarged horizontal cross-sectional view taken on substantially the line 6-6 of Fig. 2;

Fig. 7 is an enlarged vertical transverse cross-sectional view taken on substantially the line 7-7 of Fig. 2;

Fig. 8 is an isometric view of an upper supportingbracket;

Fig. 9 is an end view of the right hand member of Fig. 4, looking in the direction of the arrow A;

Fig. 10 is an enlarged vertical transverse cross-sectional view taken on substantially the line 10-10 of Fig. 2;

Fig. 11 is an isometric view of a lower supporting bracket;

Fig. 12 is an enlarged horizontal cross-sectional view taken on substantially the line 12-12 of Fig. 4;

Fig. 13 is a further enlarged vertical cross-sectional view taken on substantially the line 13-13 of Fig. 12;

Fig. 14 is a rear view of the casing;

Fig. 14:: is an enlarged cross-sectional view on the line 14a-14a of Fig. 14, illustrating a modified construction;

Fig. 15 is a front elevational view of a modified extensible member; and

Fig. 16 is an end elevational view thereof.

Referring to the drawings more particularly by referice ence numerals, 20 indicates generally a fan cabinet constructed in accordance with the teachings of the present invention. Broadly, the fan cabinet 20 includes an extensible base panel 22 forming the base thereof (Fig. 4), a casing 24, a support 26 for the separately mounted fan blades, 21 motor support 28, and supporting brackets 30 and 31 (Figs. 8 and 11).

More specifically considering the component parts of the fan cabinet 20, the extensible base panel 22 includes a central plate 32 having upper and lower horizontal flanges 34 and a large central opening 35. Four small guide plates 36 are secured to the rear face of the central plate 32 by spaced screws 37 which threadedly engage bars 39 spot welded to the plate 32, each guide plate 36 having a portion 38 ofiset from the surface of the central plate 32 (Fig. 5). The extensible panel 22 also includes two end plates 40, each of which has upper and lower flanges 41 to which are welded externally disposed angle segments 42. Manifestly, the vertically disposed portion of each angle segment 42 slides between the respective offset portion 38 of a guide plate 36 and the central plate 32. Each end plate 40 carries a rubber grommet 44 in each flange 41 for a purpose particularly pointed out below. It is to be understood that a single end plate 40 may be employed, as is the case in some fan cabinets of relatively small size housing a belt drive unit in order to allow space for mounting the motor. A two end panel cabinet as shown is preferred for direct drive fan units.

The casing 24 includes'louvers 46 which are formed as is clearly shown in Fig. 3, each louver 46 including a lower portion at an angle to obscure the interior of the casing 24 and an upper portion at an angle to assist the flow of air to the fan blades, said portions forming an angle which stiflens the louver 46 (Figs. 1, 3 and 14). Three sets of louvers 46 are shown, but a greater or lesser number may be used. Integral flanges 47 are provided along the vertical sides of the casing 24. Suitable screws 48 extend through openings in the flanges 47 and in the central plate 32 of the extensible panel 22 for securing the casing 24 to the panel 22, the heads of the screws 48 being flush with the rear surface of the central plate 32 so as not to interfere with the telescopic sliding action of the end plates 40. The casing 24 is disclosed as an integral formed stamping, but it may be of composite construction. The end panels may be separately formed and crimped or otherwise attached to the front portion (Fig. 14a). Louvers may be included in the end panels.

The support 26 for separately mounting fan blades includes a pair of opposed twisted strap members 50 and 51 which are secured together by suitable nut and bolt assemblies 52. The ends of both strap members 50 and 51 are riveted or bolted to the inside face of the central plate 32 at 53. A bearing sleeve 54 is supported between the strap members 50 and 51 (Figs. 3 and 4). It is to be understood that for direct drive fans, the annular portion between the assemblies 52 is formed to directly receive the fan motor.

The motor support 28 includes a plate 56 which is suspended from the lower end of the twisted strap member 51 by a pair of nut and bolt assemblies 57 and rubber grommets 58 (Figs. 4, 12 and 13). .A motor cradle 59 is spot welded to the plate 56. A lock screw 55 extends through an arcuate slot 66 in the plate 32 and threadedly engages the motor cradle 59. A double grommet 55 cushions engagement of the screw 55 with the plate 32 (Fig. 2). Thus, a resilient motor mounting is provided, yet adjustment of the belt between motor and fan blades is readily accomplished.

Each mounting bracket 30 includes a horizontal base side 60 which supports a pin 61 and a vertical side 62 having screw openings 63 therein, the two sides 60 and 62 being connected by a diagonal web 64 having an opening 65 (Fig. 8).

The support bracket 31 includes a base side 67 supporting a pin 68 and a vertical side 69 including screw apertures 70 (Fig. 11).

As is clear from Figs. 1 and 2, preferably the brackets 31 support the base of the fan cabinet 20 and the brackets 30 support the upper ends thereof. It is a simple matter to mount the brackets 30 and 31 in a window frame 72 and then lower the fan cabinet 20 into position with the rubber grommets 44 disposed about the pins 61*and-68 which affords an extremely simple resilient mounting which will absorb the fan noises.

The adjustment of the extensible panel 22 is clear from the foregoing detailed description, as is the utilization of the resilient motor mount or support 28.

In Figs. 15 and 1'6 is disclosed .a modified end .plate 40' to which are welded angle segments 42' identical with the angle segments 42. The end plate 40 includes a vertical flange 75 having a pair of bayonet slots 76 therein. For some installations, the end plate 40' may be preferable.

-It is manifest that there has been provideda fan cabinet which fulfills the objects andadvantages sought therefor.

It is to be understood that the foregoing description and the accompanying drawings have been given .by Way of illustration and example. It is also to be understood that changes in form of the elements, rearrangement "of parts, and substitution of equivalent elements, which will 'be obvious to those skilled in the art, are contemplated as'within the scope of thepresent invention which is limited only "by'the claims which follow.

What is claimed is:

.1. In combination, a fan cabinet comprising an extensible base .panel, and a casing, said base panel includin'ga central plate and end plates, said casing being connected to said central plate for support, said end plates having members slid'ably engaging members secured .to said central plate, and means for resiliently mounting said end plates for support of said fan cabinet, said resilient mounting means including resilient grommets connected to said end plates and brackets :having pins .for receivingisaid grommets.

2. In combination, in a fan cabinet for electric fans, a support panel, a easing mounted thereon, a pair of opposed strap members secured to said support panel, each strap member including a portion offset from and substantially parallel to said support panel, said offset portions being releasably connected at spaced points and each including an arcuate portion between two points of connection, said arcuate portions being in opposed positions and adapted to receive a cylindrical member therebetween for support thereof, a platform resiliently connected to one. of said strap members, a motor cradle secured to said platform, and means adjustably and resiliently connecting .said cradle to said support panel so that a fully cushioned motor support is provided.

References Cited in the file of this patent UNITED STATES PATENTS 1,404,598 Gits -Jan. 24, 1922 1,491,736 Polk Apr. 22, 1924 1,566,254 Spreen Dec. '15, 1925 1,604,448 Hosch Oct. 26, 1926 1,713,648 Feinberg et a1 May 21, 1929 1,761,752 Scott June 3, 1930 1,786,203 Gilbert Dec. 23, 1930 1,843,786 Robinson Feb. 2, 1932 1,879,450 Palmer Sept. 27, 1932 1,917,327 Preston July 11, 1933 1,946,887 Sipe Feb. 13, 1934 2,049,856 Mueller Aug. 4, 1936 2,148,524 Bartchet a1 Feb. 28, 1939 2,448,671 Hord Sept. 7, 1948 2,573,145 Sprouse et a1 Oct. 30, 1951

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