US2573330A - Venetian blind - Google Patents

Description

Oct. 30,1951 R E c s 2,573,330

VENETIAN BLIND 2 SHEETS-SHEET 1 Filed May 9 1950 a Fig 2 Frank R. Hendricks INVENTOR.

2 SHEETS-SHEET 2 Frank R. Hendricks INVENTOR.

BY l m Oct. 30, 1951 F. R. HENDRICKS VENETIAN BLIND Filed May 9, 1950 Patented Oct. 30, 1951 VENETIAN BLI ND Frank R; illendricks, Puyallup, Wash 'ass'ignor I tollf-he -Mag-iclean Cor, Inc., Puyallup, Wash, a corporation oiiwashington A pumuonMayo, 1950, Serial No, reopen This invention relates to new and useful improvements and structuralrefinements .1n Venetian blinds, and the principal object of the invention is tofacilitate convenientand expeditious installation and removal of the blind slats, so that they may be quickly and easily cleaned;

This object isach-ieved by the provision of a Venetian blind having slat supporting ladders of a unique construction, arranged so-thatthe slats are removably sustained in position by transversely extending webs ofthe -":ladder which are engaged by detents struck out from the slats so as to prevent the latter from shifting longitudinally.

An important feature of the invention resides in the arrangement of the blind lifting cords which are disposed exteriorly of the slats rather than passing through them, so that the slats may be readily removed, when so desired.

Some of the advantages of the invention reside in its simplicity of construction, in its efficient and convenient operation, in its pleasing appearance, and in its adaptability to economical manufacture.

With the above more important objects and features in view, and such other objects and features as may become apparent as this specification proceeds, the invention consists essentially of the arrangement and construction of parts as illustrated in the accompanying drawings, in which:

Figure 1 is a front elevational view of the invention;

Figure 2 is a top plan view thereof;

Figure 3 is a vertical sectional view, taken substantially in the plane of the line 3-3 in Figure 1;

Figure 4 is a horizontal sectional view, taken substantially in the plane of the line 44 in Figure 1;

Figure 5 is a fragmentary perspective detail showing the arrangement of one of the ladders used in the invention, and;

Figure 6 is a perspective view of one of the slats.

Like characters of reference are employed to designate like parts in the specification 'and throughout the several views.

Referring now to the accompanying drawings in detail, the invention consists of a Venetian blind which is designated generally by the reference character l0 and embodies in its construction the usual head member l2, a top bar I4, a bottom bar I6, a plurality of ladders l8 and a set of slats 20.

1 Claim. (01.160-168) The slats Mare disposed i'n'spacefl, parallel-relation and horizontally between the top and bot-:- tomssbars 'l'4, iltfrespe'ctively, :and the top-bar 1 4 is provided. at the ends thereof with .trunni'on's; one. :of which: is "indic'ated'at 22, which atrunnions are'rotatably journal'edfiin suitable brackets. 24 depending from the head member-1 2.,:sothatithe top bar 14, the. 'bottom'bar I and the slats 20 may be oscillated by the actuation of "suitable pullcords 26; so as tohclose or open theiblin'dlin a conventionallmanner.

' Theipull cords 25 are operatively connectedto the top bar M by the usual gear mechanism 28, as will be clearly apparent.

The aforementioned ladders I 8 extend vertically between the top bar l4 and the bottom bar It, the essence of novelty in the invention residing in the construction of the ladders, each of which consists of a front tape 30, a rear tape 32 and pairs of transversely extending, slat sustaining Webs 34, 3B.

The webs 34, 36 preferably consist of a plurality of co-planar threads, and it is to be noted that the end portions of the webs are suitably secured to the tape 30, 32, as is best shown in Figure 5.

The web 34 in each pair is disposed inwardly and downwardly with respect to the web 36 so that an end portion of a slat 20 may be threaded between the two webs, this being accomplished so that the web 34 underlies the slat while the web 36 overlies the slat, as is best shown in Figure 3.

Suitable detents 38 are struck out from each slat and are angulated upwardly, these detents being disposed between the webs in the respective pairs as shown in Figure 2 and engaging the overlying webs 36 so that the slats are prevented from shifting longitudinally in the ladders I8. However, by simply disengaging the detents 38 from the webs 36, the slots 20 may be slid longitudinally so as to completely remove the same from the blind assembly.

Needless to say, the tapes 30, 32 of the ladders l8 are secured to the respective top and bottom bars l4, l5 by any conventional means, such as for example, the staples shown at 40 in Figure 1, and the blind may be raised or lowered in the conventional manner by simply manipulating suitable lifting cords 42 which extend up through the head member [2 and pass longitudinally through a groove 44 provided in the head member, the cords 42 then passing downwardly over suitable rollers 46. However, rather than extending through slots in the slats 20 as in accordance with conventional practice, the lifting cords 22 not interfere with the removal of the slats from the ladders, as will be clearly apparent.

If necessary, the tapes of the ladders may be bowed outwardly as indicated at 48 to accommodate the lifting cords 42, as is best shown in Figure 4.

It is believed that the advantages and use of the invention will be clearly understood from the foregoing disclosure and accordingly, further description thereof at this point is deemed unnecessary.

While in the foregoing there has been shown and described the preferred embodiment of this invention, it is to be understood that minor changes in the details of construction and arrangement of parts may be resorted to without departing from the spirit and scope of the inven tion as claimed.

Having described the invention, what is claimed as new is:

In a Venetian blind, the combination of a top and bottom bars, a set of removable slats extending horizontally between said bars, a pair of tapes of the ladders.

transversely spaced ladders extending vertically between said bars and each including front and rear tapes disposed at the respective front and rear edges of said slats and pairs of slat sustaining webs extending transversely between said tapes, one web in each-pair underlying a slat and the other web overlying the stated slat and being spaced laterally from the first web, upturned detents struck out from said slats and engaging the overlying webs whereby the slats are prevented from being withdrawn longitudinally from said ladders, and a pair of lifting cords extending vertically between said top and bottom bars, said cords extending through the spaces between the overlying and underlying webs of the respective ladders and being disposed exteriorly of the slats between the edges of the latter and the adjacent FRANK R. HENDRICKS.

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

UNITED STATES PATENTS Number Name Date 1,815,196 French July 21, 1931 2,031,981 Runge Feb. 25, 1936 2,311,716 Walker Feb. 23, 1943 2,317,659 Williams Apr. 27, 1943 2,401,283 Williams May 28, 1946

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