US2593684A - Venetian blind - Google Patents

Description

April 22, 1952 Filed Aug. 25, 1950 E. A. LYONS VENETIAN BLIND 2 SHEETS SHEET l Edmund A. Lyons INVENTOR.

M /mg,

April 22, 1952 Filed Aug. 25, 1950 E. A, LYONS VENETIAN ND 2 SHEET$ HEET 2 Fig. 3

VI! rfz; .93 I I I E g .52

INVEN Aida wfi%m Edmund A yons a Patented Apr. 22, 1952 u N rED STATES Y PATENT OFFICE .EdmundeA. Lyons, Brooklyn, N. Y.

Application August 25, 1950,. Serial No. 181,474

' 2 Claims. 1

. such as commercial feasibility will become apparent in following the description of the illustrated form of the invention.

In the drawings:

Figure l is a perspective view of a window frame having a Venetian blind made in accordance with the principles of the instant invention disposed therein, portions being broken away in section to illustrate internal detail;

Figure 2 is an enlarged sectional view taken substantially on the line 22 of Figure 1;

Figure 3 is an enlarged sectional view taken on the line 3--3 of Figure 1;

Figure 4 is a transverse view taken on the line 4-4 of Figure 2;

Figure 5 is a fragmentary view taken on the line 5-5 of Figure 3 and in the direction of the arrows; and

Figure 6 is a fragmentary elevational view of an end of one of the slats showing the slot there- In carrying out this invention there is illustrated by way of environment a window frame ID. The Venetian blind made in accordance with the teachings of the instant invention is disposed in the window frame and consists of a head board or rail I2 attached by suitable means within the window frame and having a longitudinal passage I4 therein for the lift cord I6. This lift cord is attached at its ends to the bottom rail I8 of the Venetian blind and passes upwardly through the passage I4 in the head rail I2 and is looped alongside of the slats 24, terminating in the loop 26 to which a slack adjuster 3B is attached.

A metal case 32 is. disposed at one end of the head rail I2 and has the lift or pull cord is passed therein. The upper part of the cord passes over a roller 36, disposed in the case 32 and thenpasses downwardly through the sleeve 38 forming a part of the case 32. The other part of the cord It extends from the lower rail I8, upwardly into the case 32, around the roller 40 and finally passes into and through the sleeve 38 alongside of the part of the cord I6 which is disposed therein as previously described.

A. depending bracket 44 is secured to'the lower part or'surface of the'head rail I2 by'any suitable means, as rivets or screws. This bracket is provided with an arcuate slot 46 into which'the pintle'or pin 46 of the tilt bar 50: is adapted "to seat.

Another bracket 52 is secured to the undersurface of the head rail I2 or any other conven ient part thereof and has an arcuate slot 54 therein into which the pintle or pin 56 at the opposite end of the tilt rail 50 seats. By virtue of this construction the tilt bar or rail 50 is capable of being rotated about a horizontal axis which passes through the pins 48 and 56. The tilt bar is also capable of being easily removed by virtue of this construction.

Tapes 68 and 62 are provided at the ends of the slats 24 and are secured at their upper ends to the tilt board or rail. The tapes have cross pieces 66 forming a part of the assembly thereof, on which the slats 24 are seated. Each slat has at its end a T-shaped slot 68 through which the lift cord I6 passes. Accordingly, with the tapes and 62 disposed at the ends of the slats, the slots 68 need not be very deep, this providing for easily removable slats.

A single tilt cord I0 is secured at one end to the tilt bar 50 and passes through a case 12 which is fixed to the bracket 52; This case has a roller I8 mounted therein over which the tilt cord 10 passes. It has also a guide plate 82 at one end thereof so as to guide the cord I0 into the case I2. There is a pivoted latch 84 in the case with the jaw at one end thereof adapted to clamp the cord by an operation known at this time.

A spring being secured at one end to the tilt bar 50 and secured at the other end 92 to the bracket 52 constitutes a means to resiliently oppose the operation of the tilt bar 50 and hence the operation of all of the slats 24 in so far as tilting adjustment is concerned. This spring is encircled around the pin 56 to stabilize it.

Accordingly, one end of the tilt rope or cord III being fastened by means of a conventional fastener 94 to the tilt bar 50 is pulled to thereby tilt the tilt board 60 against the opposition of the spring 90. After the tilt cord 10 is pulled a sufiicient amount in accordance with a prerogative of the user, it is permitted to move back wardly slightly until latched by the jaw pressing against the cord, forcing it against the front wall 98 of the case I2. Accordingly, the tilt bar 56 is moved in one direction by the force of the spring 90 and moved in the other direction by manual application of force on the pull cord 10.

When it is desired to raise the blind, the loop 26 is pulled thereby pulling the lift rope l6 through the case 32 (Figure 2) which is secured to the bracket 44. This case is provided with a pivoted jaw I02 so as to press against and actually bite into the cord 16 at the place where it may be considered as merging into the loop 26. This holds both parts of the loop in a locked condition until released.

Having described the invention, what is claimed as new 152 Y 1. In. a, Venetian blind including a tilt board, first and second brackets rotatably supporting the ends of said tilt board, resilient means conmeeting said first bracket to said tilt board and urging the tilt board to rotate in one direction, a case secured to said first bracket and including a front wall, a jaw pivoted in said" case for vertical swinging movement toward and away from said front wall, a guide forming part of said case and disposed behind the jaw, a roller supported in thecase above the jaw and disposed adjacent said front wall, and a tilt cord attached at one end to the tilt board and extending over the guide and the roller and between the jaw and the front wall for rotating the tilt bar against action of the resilient means, said jaw and said front wall coacting to grip the cord therebetween,

4 thereby retaining the tilt board in a selected rotated position.

2. The combination of claim 1 wherein said brackets each includes a vertical portion having a slot therein, pins at the ends of said tilt board positioned in said slots for rotation, said resilient means comprising a coil spring embracing the pin received in the slot of the vertical portion of said first bracket, said spring including first and second ends engaged with the tilt board and the vertical portion of said first bracket.

- EDMUND A. LYONS.

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

UNITED STATES PATENTS

Images