US2855837A - Combined fan and canopy - Google Patents

Description

O. BAKKE COMBINED FAN AND CANOPY Oct. 14, 1958 2 Sheets-S beef. 1 Q

Filed June 21, 1956 0/01 Bakke IN VEN TOR.

9 BY @Zmw m1- Anon-n 1958 o. BAKKE 2,855,837

COMBINED FAN AND CANOPY Filed June 21, 1956 I 2 Sheets-Sheet 2 0/0 f Bakke IN VEN TOR.

Mm WWW! 5m United States Patent COMBINED FAN AND CANOPY i Olaf Bakke, New England, N. Dak.

Application June 21, 1956, Serial No. 592,856

1 Claim. (Cl. 98-1) My invention relates to a combined fan and canopy for attachment to a combine harvester to protect the operator from dust and weather and is designed as an improvement over the fan attachment of my U. S. Letters Patent No. 2,747,792, dated May 29, 1956.

The primary object of the instant invention is to provide a canopy member for protecting the operator from the sun and rain and for mounting a fan for blowing a column of cooling air through the canopy to keep dust away from the vicinity of an operator beneath the canopy.

Another object is to provide improved means for mounting the canopy and fan for easy adjustment into a desired vertical position by one hand of an operator occupying a position below the canopy.

Still another object is to provide improved means for easily adjusting the fan and canopy laterally and for locking the same in laterally adjusted position.

Yet another object is to provide in the canopy a novel visor for shielding the eyes of the operator from dust and glare.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a view in side elevation of the combined fan and canopy illustrating in broken lines the manner in which it is adjustable vertically;

Figure 2 is a View in plan;

Figure 3 is a fragmentary view in vertical section taken on the line 33 of Figure 2;

Figure 4 is a view in horizontal section taken on the line 4--4 of Figure 3;

Figure 5 is an enlarged view in horizontal section taken on the line 5--5 of Figure 1; and,

Figure 6 is an enlarged fragmentary view in vertical section of the locking means.

Referring to the drawings by numerals according to my improvements a vertical standard, designated generally by the numeral 1, is provided for a combined fan and canopy assembly designated generally by the numeral 3.

The standard 1 comprises a vertical shaft 5 rising from a base flange 7 adapted to be bolted, as at 9, to the operators platform 11 of a harvester adjacent the operators seat, not shown. A sleeve 13 is telescopically adjustable on the shaft 5 to vary the height of the standard 1 and is rotatable on said shaft 5 for lateral adjustment of the combined fan and canopy assembly 3 in a manner presently clear.

A toothed wheel 15 on the shaft 5 seats the sleeve 13 and is vertically slidably adjustable on said shaft 5 to support said sleeve 13 in vertically adjusted positions. A set screw 17 in a hub 19 of said wheel locks said wheel in vertically adjusted position. A locking dog 21 pivoted, as at 23, between a pair of lateral lugs 25 on the sleeve 13 is swingable to engage the toothed Patented Oct. 14, 1958 wheel 15 to lock the sleeve 13 in rotatably adjusted position.

The combined fan and canopy assembly 3 comprises a vertical tubular shroud 27 for a motor fan 29 mounted by a spider 31 in the lower portion of the shroud 27 with the fan 33 blowing downwardly and a frusto-conical concentric canopy 35 formed on the lower end of the shroud 27.

A hollow cylindrical air deflector 37 depends concentrically in the canopy 35 of relatively larger diameter than the shroud 27 with its upper edge suitably secured to the canopy and is spaced below said shroud. The deflector 37 serves to deflect a column of air downwardly from the fan.

An arcuate visor 39 is terminally pivoted as at -41 in the deflector for swinging downwardy out of the same.

A pair of vertically swingable, parallel upper and lower links 43, 45 support the combined fan and canopy on the sleeve 13 in vertical position. The links 43, 45 extend laterally from said sleeve 13 with outer ends pivoted as at 47, 49 to ears 51, 53 on the shroud 27. The inner end of the upper link 43 is provided with a laterally offset disk 55 pivoted, as at 57, to a similar disk 59 on the upper end of the sleeve 13. The inner end of the lower link 45 is forked as at 61 and straddles and is pivoted, as at 63, to the sleeve 13.

A tension spring 65 is connected at one end to the pivot 49 and at its other end to an car 67 on the disk 59 and extends diagonally upwardly from the lower link 65 so that it exerts a lifting force on the lower link 45 sufiicient to counterbalance the weight of the combined fan and canopyv assembly and maintain the links substantially horizontal.

The motor fan 29 may be connected in any suitable electric circuit.

As will now be seen, the fan 33 will blow a column of air downwardly around a person seated on the platform 11 beneath the canopy 35, for instance a combine operator, to disperse dust and thereby protect him from the same while the canopy 35 will protect him from sunrays and the heat thereof. The visor 39 may be lowered by the operator over his eyes as an added protection against dust and the sun. The combined fan and canopy assembly 3 can be raised or lowered by one hand by virtue of the parallel links 43, 45 without tilting out of vertical position and will assume a normal balanced position such as shown in full and dotted lines in Figure 1. By disengaging the dog 21 from the wheel 15, the combined fan and canopy 3 may be rotated on the wheel into or out of position over the operator. By adjusting the wheel 15 vertically the combined fan and canopy 3 may be adjusted vertically while in balanced position as shown in full and dotted lines in Figure 1 to vary its height from the platform as occasion may require.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows:

In combination, a standard, an upright tubular shroud having a downdraft fan therein and a concentric frustoconical canopy depending therefrom, a pair of upper and lower paralell links extending laterally from said standard and pivoted to said shroud and standard for vertical swinging to adjust said shroud and canopy vertically, spring means connected to said standard and to one of said links and yieldingly maintaining said links substantially horizontal, a hollow cylindrical air deflect-or in said canopy concentric to said shroud and larger in diameter for deflecting a column of air from said fan downwardly through said canopy over a person beneath said canopy, and a visor pivoted in said deflector for lowering to protect the face of the person.

References Cited in the file of this patent UNITED STATES PATENTS 308,110 Tregurtha et a1 Nov. 18, 1884

Images