US1616385A - Window shade - Google Patents

Description

2 Sheets- Sheet 1 H. W. METCALF WINDOW SHADE Filed Nov. 6, 1925 Feb. 1 1927.

' I 1 616 385 Feb. 1 9 H. w METCALF WINDOW SHADE Filed Nov. 6. 1925 2 Sheets-Shet 2 1: i I i 7 ggwiz/yw anemic a:

w may be brought Pate'nted Feb. 1, 1927.

' UNITED STATES PATENT OFFICE.

may wmcox mnrcm, or nonommu, 'rnanrronr or nwm wnrnow SHADE.

Application filed November 6, 1925. Serial Ho.- 67,407.

' tically no impediment, at the same time totally excludes the glare from'direct sun light, and entirely occludes the visibility of objects through the shade.

A more specific object of the invention isthe provision of a window shade constructed with vertically telescopic sections having means for limiting the range of opening movement of the sections so that one always intersects the lane of the lower edges 0 another, where y a continuous barrier is interposed to the passage through said shade of rays of light travelling in straight lines, while at the same time ample passages are provided between the several sections for the circulation of air and the reflection of' diffused light. a

A further object of the'invention is the provision of telescopic sections tiltably mounted so that the weather sides thereof into close overlapping relation for the exclusion oi draughts or winddriven rainfall.

The invention also includes .among its objects the provision of means for adjustably lowering the shade from thetop, raising it from the bottom, or latching it in stormclosed position.

Other objects of the invention will appear as the following description of a preferred embodiment thereof proceeds.

In the drawings Figure 1 is a front elevation of a casement equipped with a window shade embracing the principles of the present invention. Figure 2 is a sectional elevation, part being broken away, showing the shade in closed position, with the operating means therefor. Figure 3' is a section taken along the line 3-3 of Figure 2. v Figure 4 is a view similar to Figure 3, but showing the window shade raised from the bottom. 1

Figure 5 is a plan view of a portion of one of the telescopic sections.

Fi e 6 is an .enlarged sectional view of the ower portion of the window shade, slightly raised.

Figure 7 is a sectional view showing a detail of the lower portion of the window shade with the parts tilted to a position in which.

the shade is latched in storm-closed position.

Figure 8. is an end view of the top section showing the cord attaching means and guide rollers.

Figure 9 is a plan view of the end portion shown in Figure 8.

Referring now in detail to the several figures, the numeral 1 represents a casement to which the device of the present invention is applied. The casement 1s furnished with an inwardly directed flange 2, 3 and 4, F'gure; ort

3, extendin therearound except for 'a f distance at ach side adjacent the bottom of the easement where there is a break 5. The

purpose of this break in the continuity of said flange will be explained in due course. Said flange interleaves with the adjacent shade parts to totally exclude the assage of light or rain between the shade an the walls of the casement. The upper flange 2 is preferably positioned between channelled members- 28 and 29, the latter being suitably secured to the wall of the easement and serving the purpose of housing for certain pulleys and portions of certain cords hereinafter to be described, by means of which the shade is operated, thereby avoiding the necessity of mortising the easement, although if desired, the channelled members may be omitted, if mortising is to be practiced, in which case the flange 2 may be secured directly to the casement.

The window shade proper includes a top section 6, a bottom section 7 and intermedlate telescopic sections 8, the latter sections each having the shape of an inverted trou h of V section, the bottom section being te escopic within the section which lies immedi-' ately above it. The top section is preferably formed of sheet metal, as a parallelepipedal body extending the full width of the casement and having a slot 9 running 10 tudinally along the top side thereof, into w 'ch slot the flange 2 at the top of the easement extends when the to section 6 is in its up permostposition illustrated in Figure 3, thus forming a light and wind-tight joint between the top section and the lime] of the easement. The ends of the top section are rovided with slots embracing the lateral an e portions 3 of the easement.

e uppermost of the telescopic sections 8 is loosely. fastened along the apex of its 5 m a rectangular path by said flange portions.

dihedral angle medially of the'underneath surface of the to section by a series of fastoning means suc as bolts 11. In order to through said crack.

When the shade is folded the telescopic sections 8 nest one within the other, as shown in the lower part of Figure 4, and, when theshade is extended, they separate from'one another by a distance permitted by the series of bolts 13, said bolts being loosely mounted in slots 14 (Figure 5) so that they hang substantially vertically in all positions of the telescopic sections and slip freely through the slots 14 when the sections are moved relatively to one another. The slots 14 on the inner or house side of the shade are out directly through said sections adjacentthe edges of the sections on the inner or house side of the'latter, whereas on the-outer or weather side of the shade the slots 14 are formed in lugs 15 projecting from the edges of the sections on the outer or weather side of the shade. This is to facilitate the tilting of the sections to stormclosed position, as will presently be explained.

As shown in Figure 5, there are two slots 14 adjacent each end of each edge of each of the telescopic sections except the uppermost and lowermost of same, each slot being occupied by a bolt, as best shown in Figures 1 and 2. One of said bolts, designated as 16 in Figure 2, depends from the section 8 next above, whereas the other bolt, designated as 17 in said figure, suspends the section next below. As shown in Figures 1 and 2, the bolts of the several sections are progressively misaligned in 'order that they may, when the telescopic sections are nested, assume side-by-side positions without colliding. The edges of the sides of the telescopic sections are cut away at 19 to ac commodate-the bolts when they are in side-b -side osition.

Eac of t e telescopic sections, viz: each of the sections ..except the uppermost section '6, has a groove 18 in each of its ends to receive one of the" flan p ansn aflording means whereby t e shadief is' guided There are two independent cords 20 and 25 each forming an endless belt, one arranged on each side of the lateral and top portions .of the guiding flange. Each cord passes over a pair of single pulleys 21 mor-' tised at opposite sides into the sill of the easement, and a air of double pulleys 22,

referably hou in the channelled memrs 28 and 29. One limb of one'cord, that is to say the cord designated by the reference character 20 in Figure 5,. passes through an apertured lug 30 formed on a block 31 carried at the end of the bottom section 7,

said limb being fastened to said lug by a 'set screw 32. At the other side of the casesection 6 is provided at its ends with blocks 33 having projecting lugs 34 which are at- I tached to those limbs of the other cord 25 which are travelling in the same direction.

The blocks of both top and bottom sections are preferably furnished with rollers 35 which bear against the side flanges 3 in the ascent and descent of the shade, constitut ing non friction guide elements for said shade.

' It is apparent from the above description that the shade may be lowered from the top by manipulating the cord 25 or raised from the bottom by manipulating suitable portions of the cord 20, the shade being raised or lowered, as the case may be, an even distance on both sides.

In the shown in p in Figure 6, an open passageway is formed between the sides of adjacent sections permitting the free circulation of air from one side of the shade to the other and also permitting the entrance of difl'used light reflected from the sloping sides of the telescopic sections. It is apparent that no direct rays of lightcan enter a room protected by the shade when it is in this position, nor can objects on one side thereof be ositions of the telescopic sections observed from the other side, since light,

also travels in straight lines, and an apex of an underlying telescopic section intersects the plane embracing the lower edges of the sections immediately above it.

It is sometimes desirable, however, to ex elude some of. the air that otherwise would enter, as well as to shut out draft or a wind-driven rain. To accomplish this the telescopic sections, including the bottom section are made tiltable' so that the outer sides 'thereof assume an overlapping relation of shingle-like closeness. The cut away portions 19 are made sufficient] wide to permit this tilting movement of tie sections. In order to latch the shade in stormclosed position the bottom section is lifted the lower ends of the flange portions 3 until it assumes theposition shown in Figure 7, which position is retained by virtue of the igures 3 and 4 and particularly 1 engagement of the lower edge thereof with the flange portion 4. The tautness of the cord caused by vertical when the bottom section is tilted also assists in keeping said section in tllted position. To restore the bottom section to the normal position shown in Figure 6, it is necessary merely to pull down the mner end thereof by hand, slmultaneously pushing it through the break 5 until the slot 27 is in alignment with the flange portions 3 whereupon the bottom section may be raised upwardly upon said flange portions or pushed downwardly upon the flange portion 4, according to the desired. When the bottom section of the 'shade is in engagement with the flange portion 4 an absolutely weather-tight joint is formed between the shade and sill of the casement.

While I have herein described what I believe to be an eflicient and practical embodi 'ment of my invention, it is to be understood that the application of theinventive principle is not restricted to the construction herein disclosed, but that it may find physical expression in many forms to which the appendedclaims, or any oneof 'them may be eneric.

aving described my invention what I claim as new and desire to secure by Letters Patent is 1. In combination, a flange adapted to extend longitudinally of the sill of a casement, projecting toward the casement opening a slot to receive said flange in the lowermost position of said shade, other sections operably connected to said bottom section to perform similar movements to and synchronously with the movements of the bottom "section, said bottom section being tiltable about a point in its line of vertical travel when out of engagement with said flange but near its lowermost position, and having a part thereof engaging said flange when said bottom section is tilted for holding said shade sections in tilted position.

-2. A window shade including a top section having a slot .extending longitudlnally of the upper face thereof to receive a flange atthe top of a casement, a series of sect'ons freely suspended from said top section, the u per-most of said depending sections being loosely connected to the bottom face of said top section along a line extending longitudinally thereof, said top section being provided with a flange extending downwardly at one side of the line of juncture between said suspended sections and said top section, and loosely connecting and intersecting a horizontal plane passing through said line of juncture.

3. i window shade including a'top seeits deflection from the position of the shade a. vertical and a vertically movable shade includbottom section having a longitudinal.

. tion having a flat lower face, a series of depending sections, means carried bysaid top sections serially suspended, spaced lugs at the ends of said sections loosely embracing guide members for guiding said sections in ath of movement, said sections being tiltab le relative to said guide members and means for simultaneously tilting said sections. 7

5. A window shade including telescopic serially depending sections each having the shape of an inverted trough, said sections nesting together when telescoped and having slots adjacent their lower edges, rods loosely passing through said slots for limiting the range of extension of said sections, the edges of said sections being cut away to permit said rods to lie side by side when the sections are in fully telescoped position.

6. A window shade including a top section and a bottom section, intermediate telescopicserially depending sections loosely connected to said top and bottom sections, said intermediate sections each having the shape of an inverted trough, and having at their ends grooves for loosely embracing guide members for guiding said sections in a vertical path of movement, said intermediate and bottom sections having slots adjacent their opposite edges and bein tiltable 7 relative to said guide members, rods loosely :mediately above it, said rods functioning as means for simultaneously tilting the intermediate sections when the bottom section is tilted. j

7;A window shade including a top sec'- A tion and a bottom section, intermediate telescopic serially depending sections loosely connected to said top and bottom sections,

said intermediate sectionseach having the shape of an inverted trough, said intermediate sections having grooves in their ends for loosely embracing guide members for guiding said sections in a vertical .pathof movement, said intermediate and bottom sections being tiltable relatively to guide members, lugs on the outer sides of said intermediate and bottom sections, said lugs and the opposite sides of said sections said being slotted, rods loosely engaging in said taneously tilting the intermediate sections slots, said rods being of such length as to when the bottom section is tilted and said limit the extension of said telescopic secgrooves permitting said sections to assume 10 tions so that the apex of one always intera relatively closed position whentilted.

5 sects the plane passing through the lower In testimony whereof I have hereunto set edges of the section immediately above it, my hand.

said rods functioning as means for simul- HENRY WILCOX METCALF.

Images