31,1946.' A. NIH'QN > 2,413,464 VENETIAN yBLIND Filed March 27, 1944 Y /v Ä 2 Sheets-Sheet 1 7%’ ° Í c? l Dec. 3l, 1946. A. NlHoN 2,413,464l VENETIAN BLIND Filed March 27, 1944 2 Sheets-Sheet 2 l "'\ ............. `. Inventor Attorneys y Pstenied'nec. 31, 1946 ' 2,413,464 UNITED STATES PATENT OFFICE 2,413,464 VENETIAN BLIND Alexis Nihon, Dorval, Quebec, Canada Application March 27, 1944, Serial No. 528,217 1 Claim. (Cl. i60-173) 1 _ The present invention relates to blinds and, more particularly, to glass Venetian blinds. The primary object ofthe invention resides in the provision of a Venetian blind having im proved light-transmitting properties and of high ly decorative character. Another important object resides in the pro vision of a Venetian blind which, gathering less dust, could be kept spotless for longer periods of 2 cut edges were of no commercial value and pre sented a proble of disposal to the glass maker. As an example, and for purposes cf illustration only, two possible forms of the invention are shown in the annexed drawings, wherein: Figure 1 is a perspective view of a Venetian blind constructed according to the invention and constituting the first and preferred form, Figure 2 is a fractional perspective view of a time and be such as to be easily cleaned and un glass slat, or blade, according to the invention, affected by water and detergents. Still another object is the provision of a blind 3-3 of Figure 1, of the character described, having means for re moving and installing all, or individual, slats, rapidly and without disturbing the remaining slats or blades. Figure 3 is a vertical section taken on the line , Figure 4 is a view> similar to Figure 3, but show ing the glass slats in closely contacting position as when said slats are inclined when the blind tively inexpensively and simply out of easily pro is closed, Figure 5 is a perspective Aview of a Slat-retain ing clip shown in Figure l, Figure 6 is a_ fractional plan view showing the- curable materials. construction of said clip, A still further object. concerns a Venetian blind of the type defined, which can be assembled rela ' - An additional object contemplates a Venetian ' _ blind adapted to close tight and thus act as an l Figure 7 is a transverse section of the clip taken on line 7_1 of Figure 5, insulator against convection heat losses. A further additional object resides in the pro vision of a Venetian blind having light-diffusing Figure 8 is a vertical section taken through the second form of the invention, and reflecting properties to act as an insulator 9--9 of Figure 8, Figure 9 is a sectional view taken on the line Figure 10 is a transverse vertical section taken against heat radiations. on the line lll-l0 of Figure 9, _ Other objects and advantages of the invention Figure 11 is a perspective View of the clip used will become apparent, or be further pointed out, 30 in the form of Figure 8 and shown therein as well during the description to follow. as in Figure 10, and In order to meet the objects enumerated above, Figure 12 is a transverse section of the clip the material to be chosen for the slats had to taken on line |2-l2 of Figure 11. have specific properties of hardness, stiffness, Referring to the drawings, wherein similar ref-' l transparency and heat insulation, such as are possessed only by glass. 35 erence characters represent corresponding parts throughout, the letter “A” designates generally The cost and other difficulties inherent to this -the type of slat preferably employed according material were a drawback, until it occurred to the to the present invention and constituted, as pre inventor that the scrap glass, cut from the edges viously stated, of the bulb-edge or bead 40 cut of sheets drawn in the Fourcault machines, known as bulb edge glass, would be ideally suited for the 40 from glass drawn in the Fourc'ault machines. Said slats, after being cut to length and suitable purpose in view. Notwithstanding the fact that width, are treated in an acid etching bath to give said single thickness glass is thrown away, and is the sarne a ñnely ground or frosted surface. The therefore obtainable cheaply, its other character purpose of this> treatment is to render the slats istics render it adaptable to use in Venetian blinds according to the invention. 45 translucid so that light may ñlter through when the blind is closed, but afford the necessary pri The use of said bulb-edge glass renders possible vacy to the user of the blind. Furthermore, the the useful reclaiming of hundreds of thousands etching treatment has for a result to take off of feet of narrow, single-thickness glass thrown the sharp edges from the slats and render the away by glass makers daily throughout the world. As is well known, said bulb-edge or bead is auto 50 same available for immediate use after frosting. The mechanism for operating a' Venetian blind matically produced on the glass sheets drawn in according to the invention may be constituted of the Fourcault machines; said edge must be re substantially the same elements as are used for moved from the sheets, because it is harder and conventional blinds having Wooden or fibre slats. with non-parallel faces. Except for some limited use as shelving, in the multiple thicknesses, the 55 The usual suspension means may be employed, 2,413,404 ` 3 which consist of vertical parallel tapes "T" As in clip Il, the lug 29 is apertured at 3B and joined together at regular intervals by horizontal ' the slats. Normally, said tapes are secured to an oscillating bar concealed within a header-box “B," said bar being actuated by a suitable mecha furthermore provided with a very small eyelet formed at the extreme edge or apex of said lug. A Venetian blind constructed according to this modified form and including the clip just de scribed is shown in Figures 8 and 10 wherein the nism operated by the manipulation of the drop conventional elements already defined will ‘be cord "D” (see Figure 1). Thus, as is well known, the slats may be inclined at will to control the found, such as: the header-box “B," the suspen sion tape “T” and cross Slat-supporting tapes. light admitted and the visibility through the It will be noted, however, that the supporting cross-tapes “C” adapted to bear the weight of tapes of this modiñed form, as shown in Figure blind. Inasmuch as an object of the invention is the 9, consists of spaced narrow tapes instead of the easy removal of individual blades, said blades usual full-width tape generally used. Said nar row tapes “N” _are spaced from each other in A are not apertured as is usual to permit the pas sage behind the tape of a draw cord secured to 15 order to provide an inner channel “F” therebe- ' the lower bar of the blind and adapted to raise the blind when desired, Instead, according tothe invention, the glass slats are left unperforated and provided at each end with a metal clip tween for the passage of draw-cord “G” between said narrow tapes and in the aperture 30 of the and which, therefore, retain the slats in place and prevent their longitudinal axial displace before, it is not convenient, practicalor desired lug 29 formed on clip 25. Therefore, the clip as well as the draw-cord, are at least partially hid through which the draw-cords “E” are threaded 20 den from View by the tapes “'I‘" when, as stated to have the clip on the outer end of the slats as in Figure 1. As a further precaution against longitudinal Notwithstanding the fact that the slats are un perforated, as the perforation of glass would 25 sliding movement of the slats, the eyelet 3|, pro vided on the lug 29, may be stitched to the front present some diiliculties and reduce its ilexibility ` tapes “T," as shown in Figures 9 and 10. Thus, as well as weaken its resistance to breakage, the ment. l the clip being secured to the tape, said clip effec tively prevents movement of the slats and fur cleaning of the slats since no interfering cord exists and, besides, permits the easy removal of 30 ther assists in the proper positioning thereof when it is desired to tilt the same away from individual members for replacement purposes due arrangement described above facilitates the their horizontal position. Due to the increased weight of glass slats as The clip shown in Figure l and generally indi compared with wooden ones, an arrangement is cated by the reference character I5, may consist of a strip of springy material folded lengthwise to 35 shown in Figure 8 for facilitating the raising of form parallel spaced jaws I6 and I'I respectively. the blind, or the folding thereof, when it is de sired to dispense therewith. The draw-cord “E” The jaw Il is~slitted transversely at I8, from the is not secured at its free end to the lower bar of outer edge to a position >near the back edge I9 of the blind, as is usual, but instead is attached at said clip. The purpose of said slit is to facilitate the insertion of the clip on the end of the glass 40 one end to the header-box “B,” the downward reach of this cord being passed behind the back slats which, as shown in Figure 2, are of unequal tapes “C” and trained over the rollers 35 under cross-section (see Figures 3 and 4). neath .the lower bar “L” of the blind, said cord formed as an extension of the back edge I9, in extending upwardly thereafter through the aper a plane substantially that of the jaw I6, said lugbeing cut in the jaw’ I6 and bent back 180° from 45 ture 30 of the lug 29 behind the front tape “T” said jaw, as shown in Figure 7. Consequently, until it reaches the header-box “B” where it is passed over a second pulley 36 shown in dotted the lug 20 being apertured at 2l, the draw-cord lines in Figure 8. The end 31 of said cord hangs "E” can be passed through said aperture 2I downwardly in the usual manner, According to which, being in line with the central axis of the ‘ slat, allows inclination thereof without interfer 50 the well-known physical principle of the double pulley, the arrangement just described permits ence with said cord. Furthermore, as previously 'the raising of the blind with half the effort that~ stated, the draw-cord “E” threaded through the aperture 2l of the clip I5 effectively prevents would have to be expended otherwise. From the foregoing disclosure, it will be evi sliding motion of the individual slats which, as to breakage or anyV other reason. a result, are retained perfectly in line. 55 dent that the present invention isv an advance Under conditions of use or situation where the of the art of Venetian blinds in that, according end clip I5 of the blind would be objectionable, a` modified form of the invention can be used instead, which is shown'in Figures 8 to 12 and which includes also a special pulley arrangement 60 for facilitating the raising of the blind. This modified' form of the invention includes also a clip to secure the slat against sliding movement, said clip, however, engaging the slat on the bulb ous edge behind the tape used for supporting 65 said slat. This clip is shown in Figure 11 and is substantially the same as the clip I5 already> described. The modified clip generally indicated at 25 is also made of springy material and in cludes spaced parallel jaws 26 and 21 respectively, 70 joined together by the tubular back edge 28 so formed as to accommodate the bulb edge of the. slat. The lug 29 is stamped from the jaw 21 and bent back in a plane _therewith to extend at right angles to the axis of the back edge 28. 75 to said invention, it is possible to obtain lighting effects not obtainable otherwise, secure advan tages of stability against deterioration by the elements, water and detergents, and permit the removal or replacement of individual slats with out disturbing the blind as a whole. More particularly, the translucid qualities of the glass slats permit the utilization of a max imum of day-light, while affording complete privacy whenever artificial inside lighting is de sired in addition. Again, light being a good heat . insulator, the closed slats constitute, when tightly closed, a glass wall which in front of a window, imprison a layer of air providing'additional in sulation against convection heat losses. And, glass being a good reflector, the radiant heat en ergy emanating from the sun or, conversely, from inside heated surfaces, heat radiation through 2,413,464 moved. The net result is a slat that stays cleaner longer and can be restored more easily to its ori vented. In connection with the heat insulating proper ties of the glass against radiation, it is pointed out that in certain cases it is quite feasible to ginal cleanliness. It must be understood that the forms of my invention- herein shown and described are to betaken as preferred examples of the same, and that various changes as to the shape, size and arrangement of parts may be resorted to, and glass-like materials such as plastics be substi tuted, without departing from the spirit of the coat one face of the blind with a metallic coat ing such as silver or aluminium, whereby the slats may act as a perfect reflector and mate rially aid in keeping cool, in the summer, rooms and the like exposed directly to the sun. Even without this metallic coating, it has been found that the lroughened surface of the slats, when closed, effectively diffuses the direct rays of the sun so that a very soft lighting is the result; in other words, the ground glass surfaces let in day light but, ñlter out the glare and heat rays 6 not penetrate said surface and can be easily re- ì the glass-Venetian blind is substantially pre invention or the scope of the subjoined claim. ` Having thus described my invention, I claim: In a Venetian blind, translucent slats having lus of the sun. Consequently, a room exposed to the direct rays of the sun is much more comfortable. Another advantage of the acid-etched surfacev cfa the glass slats is that said surface is exceed 20 ingly smooth and. as a result, does not retain dust as readily as ordinary conventional slats; since the etched surface ofsaid glass slats is not porous, it is evident that dirt and dust does a substantially flat body and a bead at one edge thereof, whereby said slats can be inclined in closed bead-to-bcdy position, supporting, raising and actuating means for said slats, and bead fitting Slat-aligning means removably retained by the beads of the slats and engaged by the slat raising means independently of the supporting means. ALEXIS N'IHON.