US2574344A - Jalousie - Google Patents

Description

Nov.1 5, 1951 L. MILLER 2,574,344

` JALoUsIE medApril 24, 195o 'skrf ATTORNEYS.

Patented Nov. 6, 1951 UNITED STATES PATENT OFFICE JALOUSIE Lee Miller, Gardena, Calif.

Application April 24, 1950, Serial No. 157,722

1 Claim.

This invention relates to a jalousie or a screen or window cover comprising adjustable light control louvers.

The invention is characterized by the provision f a plurality of pivotally mounted louvers connected for joint operation but having at least two sections, in one section of which the louvers are mounted for pivotal movement through a greater arc than the louvers of the other section.

In jalousies of the type of this invention it has been found desirable in some installations, such as schools and the like, to provide an upper section in which the louvers do not open to a full horizontal position and thus shield the occupants of the building from the direct rays of the sun, while in the lower section the louvers are mounted for movement into horizontal position to permit unobstructed vision.

On the contrary in other types of installations such as banks and the like, it has been found desirable to reverse the structure so that in the lower section the louvers are in overlapping relation and prevent persons passing by from having an unobstructed View of the interior, while the louvers of the upper section are mounted to open fully to a horizontal position to increase the admission of light.

It is accordingly one object of this invention to provide a jalousie having two sections of parallel pivoted louvers in one of which louvers are adapted to move through a greater arc than the other.

Itis a further object of this invention to p'rovide a jalousie of the type described having two sections, in the lower of which the louvers are pivotally mounted for movement from closed position to fully horizontal position, while in the upper section the louvers are mounted for pivotal movement from closed position to a position intermediate horizontal.

It is a further object of this invention to provide a jalousie of the type described having two sections, in the upper of which the louvers are pivotally mounted for movement to fully horizontal position, while in the lower section the louvers are mounted for movement to a position intermediate fully horizontal.

It is a further object of this invention to provide a jalousie of the type described embodying the above-mentioned objects and advantages in which all of the louvers are connected for joint operation b v a single means.

These and other features, objects and advantages of the present invention will be apparent from the annexed specification in which:

Figure 1 is a side view partly in section of a jalousie embodying the present invention installed in a window frame.

Figure 2 is a view similar to Figure 1 showing the jalousie in closed position.

Figure 3 is a fragmentary view similar to Figure 1 of the reversed type embodiment of the invention.

Figure 4 is a front View of the device shown in Figure 1 taken along the lines 4-4 of Figure 1.

Figure 5 is an enlarged fragmentary section showing the linkage arrangement.

Figure 6 is an enlarged fragmentary vertical section of the worm and gear arrangement.

Referring now more particularly to the drawings, there s shown a window casement IIJ having a sill I I upon which are mounted the mullions I2 forming the window frame. An angle bracket I3 is provided affixed to the sill I I and one of the mullions I2 as by the tap screw I4. Two such angle brackets are provided one on each side of the window frame and extending outwardly. The angle brackets I3 are slotted and an angle I5 is secured under the angle brackets I3 by a wing nut I6 and bolt I'I. The angle I5 extends between the two brackets I3, as shown in Figure 4, and abuts the upstanding channels I8 forming the sides of the jalousie frame.

The top of the frame is provided with a crossangle I9. A plurality of vanes or louvers, preierably formed of aluminum, is provided and each has a ilat portion 20, a downwardly extending portion 2| which is turned inward as at 22 and an upwardly extending portion 23 turned outward as at 24. across the width of the casement and are Drovided adjacent each of the channel members I8 with tilt arms 25. The tilt arms are secured to the vanes by any suitable means such as spot welding and the tilt arms are themselves pivotally mounted upon the channels I8 as indicated at 2G. The tilt arms are angle shaped as indicated and have extensions 21. An arc arm 28 is provided to which are pivoted each of the extensions 27 of the upper three tilt arms 25 as shown. The lower end of the arc arm 28 is pivotally connected as at 29 to a link 33. Intermediate the upper and lower series of vanes a link 3| is pivoted to each of the upstanding channels I8 as at 32 and its inner end is pivotally connected to the upper end of the lower arc arm 34 as at 33. The link 3I is provided with a plurality of holes` 35 each of which may be used selectively to receive the pin pivotally connecting the link 30 to the link 3| as at 36. Each of the lower tilt arms 25 is similarly provided with an extension The vanes extend laterally 21 and plvotally connected as at 31 to the lower arc arm 34. The bottom end of the lower arc arm 34 is pivotally connected as at 38 to the end of a crank arm 39.

The crank arm 39 is xedly connected to a shaft 40. The shaft 40 is journaled in a housing 4| mounted upon the brackets I3 and in the upstanding side channels I8. The shaft 40 is likewise provided within the housing 4i with a gear 42 meshing with a worm 43 formed upon a shaft 44 extending through a bearing 45 in the housing.

An escutcheon plate 48 is mounted upon the innerportion of the sill Il and the shaft 44 is journaled therein and carries a hand crank 41.

Intermediate its ends the shaft 44 is likewise journaled in the walls of one of the mullions l2 as shown at 48 and 49.

Referring now more particularly to Figures 3 and 5, there is shown an alternative embodiment of the structure which in all respects is similar to that just described with the exception that the lower end of the upper arc arm 28 is, in this case, pivoted directly to the end of the link 3l and the link 30 is attached to the upper end of the lower arc arm 34. As will be hereinafter described, this results in a reversal of the functioning of the upper vanes and the lower vanes.

The operation of the above-described device is as follows. Assuming the jalousie to be in closed position, as shown in Figure 2, a turning of the crank 41 will rotate the shaft 44 and the worm 43 thus revolving the gear 42 and the shaft 43. Thefshait 40 carries with it the crank arm 39 and will thus pull downwardly upon the lower arc/arm 34 thus pivoting each of the lower vanes 20'in a clockwise direction. Simultaneously, the lower arc arm 34 will act upon the link Si (Figures l and 2) or the link 30 (Figures 3 and 5). In the embodiment shown in Figures l and 2, the resultant clockwise rotation of the link 3l will cause a downward pull upon the link 39 and a consequent pivoting of the upper vanes 20 in a clockwise direction, but because of the ratio of distance between the pivot point 32 and the pivot point 36 and that between pivot points 32 and 33 the amount of rotation of the upper vanes will be less than those of the lower vanes. Thus the lower vanes may be placed in horizontal position, as shown in Figure l, while the upper vanes have reached only an approximate 45 angle.

In the Aembodiment shown in Figures 3 and 5, the effect is reversed as the movement of the upper arc arm 28 is multiplied with respect to the movement of the lower arc arm 34 in accordance with the ratio of the distance A to the distance B, Figure 5. Thus, the upper vanes may be rotated-to Aa horizontal position, as shown in Figures 3 and 5, while the lower vanes have attained only a angle. It will be appreciated that these angles may be varied slightly by selecting a different one of the holes 35 in the link 3| for connecting the link 30.

When in entirely closed position, the jalousie is substantially light proof as each of the downwardly extending members 22 overlies in spaced relation and adjoining upwardly extending member 23, as clearly shown in Figure 2.

In fully open position the 45 vanes have their respective downwardly extending portions 2l so disposed with respect to the upwardly extending portions 23 of the lower vane as to define a 15 angle from horizontal. This prevents any direct rays vof sunlight from entering between adjacent 45 vanes inall principal latitudes.

While there' has been described what at present is considered a preferred embodiment of the present invention, it will be appreciated by those skilled in the art that various changes and modifications can be made therein without departing from the essence of the invention and it is intended to cover herein all such changes and modications as come within the true spirit and scope of the appended claim.

A. jalousie comprising a frame; a plurality of louvers pivotally mounted on said frame in spaced relation to each other; means connecting a first portion of said plurality of louvers for joint pivotal movement; means connecting the remaining portion of said plurality of louvers for joint pivotal movement; and means connecting said two connecting means whereby one of said portions is mounted for pivotal movement from an initially fully closed position to a fully opened position while the other portion is mounted for pivotal movement from an initially fully closed position to a partially open position; and a single common actuating means for simultaneously effecting both of said pivotal movements.

LEE MILLER.

REFERENCES CITED The following references are of record in the iile of this patent:

UNITED STATES PATENTS Number Name Date 465,395 Stoeppelwerth Dec. 15, 1891 1,006,149 Thompson Oct. 1'7, 1911 2,422,704 Russell et al June 24, 1947 FOREIGN PATENTS Number Country Date 15,910 Great Britain July 8, 1912

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