US2708967A

US2708967A - Springless window shades

Info

Publication number: US2708967A
Application number: US408522A
Authority: US
Inventors: Suson Isadore
Original assignee: Individual
Current assignee: Individual
Priority date: 1954-02-05
Filing date: 1954-02-05
Publication date: 1955-05-24
Anticipated expiration: 1972-05-24

Description

May 24, 1955 LsusoN 2,708,967

SPRINGLESS wINDow sHADEs .Filed Feb. 5, 1954 www "HHIHU l 1N V EN TOR. Byfsada/eason AT TOR/VE YS United States Patent() 2,708,967 y SPRINGLEss WINDOW sHADEs Isadore Suson, Denver, Colo.

Application February 5, 1954, Serial No. 408,522

43 Claims. (Cl. 16o-298) This invention relates to improvements in springless window shades.

Window shades of the roller type are extensively employed both for residences and for business buildings. By far the greater number of such roller shades are of the type employing a torsion spring positioned in one end of the roller for winding the shade thereonto. This type of roller shade is provided with a clever means for latching the roller with the shade in any desired position.

There are available today roller shades that do not employ springs for winding the shade onto the roller but which employ an endless cord that passes around a grooved pulley non-rotatably attached to the shade roller and Which turns the roller in either direction as determined by the direction in which the cord is moved. And it is to this type of shade operating mechanism that the present invention relates.

In order to describe the invention and its manner of use, reference will now be had to the accompanying drawing in which the invention has been illustrated and in which:

Figure 1 shows one corner of a window frame showing the shade positioned between the window frame jambs;

Figure 2 is a view showing the shade mounted on the enter surface of the window trim;

Figure 3 is a fragmentary view, partly in section, showing one end of a shade roller mounted as shown in Figure 2;

Figure 4 is a view similar to that shown in Figure 3, showing the roller mounted in the window frame as shown in Figure 1;

Figure 5 is a side elevational view of one form of mounting bracket, taken looking through plane 5 5, Figure 3;

Figure 6 is a side elevational view of another form of mounting bracket taken looking through plane 6--6 Figure 4;

Figure 7 is a section taken on line 7 7, Figure 3;

Figure 8 is an elevational view of one of the principal elements of this invention, taken looking through plane 8-8, Figure 4, and in the direction of arrow 8 in Figure 9;v

Figure 9 is an edge elevational view looking towards the left in Figure 8;

Figure 10 is a view, partly in section, taken on line 10--10, Figure 4;

Figure 11 is a side elevaton of one of the elements.

Figure l2 is a-section somewhat similar to Figure 4, showing a slightly modified form;

Figure 13 is an end view, partly in section, taken on line 13-13, Figure 12; and

Figure 14 is a diametrical section of one end of the roller, similar to that shown in Fig. 3, and shows a modification.

Referring now to the drawing, reference numeral 15 designates the jamb of a window frame and 16 the window trim. The glass has been designated by reference numeral 17 and the window sash by 18. In Figure 1 the shade Patented May 24, 1955 roller 19 is mounted between the jambs 15, while in Figure 2 it is mounted on the trim.

Referring now to the mounting shown in Figure 2 and the operating device illustrated in Figures 3 to 1l inclusive; reference numeral 20 designates an angle bracket having a base 21 provided with openings for screws 22 by means of which it is attached to the window trim. The vertical side of bracket 20 is provided with an elongated hole 23 and two T-shaped openings 24. The operating device consists of a shaft having a square section 25 and a threaded section 26 of smaller transverse diameter than the diagonal distance across the square section so as to provide a shoulder 27 that serves as an abutment for

washers

28 and 29. A serrated pulley 30 has been shown as threaded onto section 26 and forced against washer 29 and is held in place by frictional resistance. Positioned adjacent the pulley is a combined friction brake and attaching device 31 which consists of a thin metal plate having a circular portion 32; two brake shoe portions 33 that project over the pulley and two fastening projections 34 that project in the opposite direction from the brake shoes and which terminate in arrow heads 35 as shown in Figure 7. A thin nut or a horseshoe clip 36 holds member 31 in place. The square end of the shaft extends into a square hole in the roller cap as shown in Figure 3 and projections 34 extend into and through openings 24, all as shown in Figure 3. An endless cord 40 passes through the space between the pulley and the brake shoes and is of such size that it is somewhat compressed so as to force it into engagement with the serrations 41 on the periphery of the pulley. The other end of the roller has not been shown but it is provided with a pivot pin that turns in an opening in an ordinary curtain roller bracket. The three

parts

28, 29 and 30 may be a single casting instead of separate parts, as shown in Figure 4.

When the shade is mounted as shown in Figure l, a slightly different bracket is employed and this has been illustrated in Figures 4 and 6. Instead of the part 20 having a base or ange 21, its ends are tlrst offset as indicated by 41 and then bent outwardly forming feet 42 that are provided with openings 43 for fastening screws.

When ordinary spring rollers that have springs 44 are to be converted into springless rollers the simplest way is to slip a cap 45 over the end as shown in Figure 12. Cap 45 has a rectangular hole for the end 46 and holds that part from turning. Instead of a square shaft, like 25 in Figures 3 and 4, a short shaft 25a has an opening for the reception of end 46, as shown in Figure l2. In this way the conversion can be quickly elected.

Instead of a square shaft as shown at 25 in Figures 3 and 4, a nail-like shaft 2511 (Fig. 6) can be used and this can be provided with a attened end 46 to lit the correspondingly shaped socket in 25a.

In the construction shown in Figure 4 the end of shaft towards the right has been shown smooth and the

parts

28, 29 and 30 have a pressed t therewith. Other modifications can be made within the scope of the appended claims.

From the above it will be seen that the device illustrated is simple, substantial and adapted for use in converting roller shades of the spring type into springless shade roller shades. The cap 47 shown in Figure 3 can be provided with a square hole that cooperates with the square portion of the shaft and the opening in the wooden roller can be round and larger than the shaft; this makes it possible to convert the spring shade rollers into springless shade rollers.

What is claimed as new is:

l. A device for the purpose specified, comprising in combination a bracket having a ilat surface provided with two T-shaped openings, said bracket having at least one perforated ange adapted to receive screws or the like to secure it to a supporting surface; means for turning a shade roller and for rotatably supporting one end thereof from said plate, comprising a shaft having an inner non-circular end section and an outer round end section, a flange extending outwardly from said shaft in xed relation thereto, between the two sections, a pulleylike member with a serrated peripheral surface fixed to the round section of the shaft adjacent said ange, and an attaching device having a bearing, the round section of the shaft being journaled in said bearing at a point adjacent the outer surface of the pulley, said attaching device having diametrically positioned extensions projecting laterally from one side thereof, extensions terminating in spear heads projecting through the T- openings in the bracket, for electing a removable connection therewith, brake shoes extending laterally from the other side, lapping the peripheral surface of the pulley for urging an operating cord into engagement with the peripheral surface thereof, serving also as a brake for resisting any unintentional rotation of the roller.

2. A device in accordance with claim 1 in which the flat surface of the bracket has an elongated opening positioned between the T-shaped openings for the reception of the outer end of the shaft.

3. A device in accordance with claim 1 in which the attaching device is secured in position by means of a thin holding member in interlocking engagement with the round end surface of the Shaft.

References Cited in the le of this patent UNITED STATES PATENTS 1,706,511 Baber Mar. 26, 1929 1,943,648 Wessman Ian. 16, 1934 2,217,067 McCauley Oct. 8, 1940 2,445,452 Peed July 20, 1948 2,487,385 Schaper Nov. 8, 1949