US2179882A - Blind - Google Patents

Description

A. DURRE Nov. 14, 1939.

BLIND Filed Sept. 20, 1938 2 Sheets-Sheet 1 %d0i ihh Attorneys A. DURRE Nov. 14, 1939.

BLIND Filed Sept. 20, 1938 2 Sheets-Sheet 2 Invenior I'll- Allen ,Fwz'r'e Patented Nov. 14, 1939 UNITED STATES PATENT QFFAICE 3 Claims.

This invention appertains to new and useful improvements in blinds.

The principal object of the present invention is to provide a blind structure that can be conveniently used in either new or old buildings.

Another important object of the invention is to provide a blind structure which can be used in office buildings, schools hospitals, and else where with a high degree of convenience and comfort for the occupants.

Still another important object of the invention is to provide a blind structure which can be easily manipulated and which in use will not be susceptible to the ready developments of defects.

These and other objects and advantages of the invention will become apparent to the reader of the following specification:

In the drawings:

Figure 1 represents a side elevational view of the blind with parts broken away.

Figure 2 is an edge elevational view.

Figure 3 is a horizontal sectional view.

Figure 4 is a fragmentary vertical sectional view taken substantially on line 4-4 of Figure 2.

Figure 5 is a fragmentary elevational view showing how the slats are angularly set.

Figure 6 is a sectional view taken substantially on line 6-6 of Figure 5.

Figure 7 is an enlarged detailed sectional view showing one of the gear connections shown in Figure 4.

Figure 8 is an edge elevational view of one end of one of the slats.

Referring to the drawings wherein like numerals designate like parts, it can be seen that the blind is made up of a pair of vertically extending hollow members 66 each formed with a slot at its inner side. In other words the opposed sides of these hollow columns 6 are slotted to receive the pintles I at the ends of the slats 8. These pintles 1 project from the top surfaces of the slats 8 so that when the slats are supported by the pintles they will always assume the horizontal position suggested in Figure 8.

A shell 9 is fitted over the upper end portion of the columns 6 to define a magazine III while a front plate II and a similar shell I2 are arranged over the lower portions of the columns to define a second magazine I3. The plate I I has hingedly connected thereto as at I4 a narrow plate I5 which serves as a closure and which can be opened to gain access to the gears shown in Figure 4.

Extending vertically in each of the columns 6 is a spiral shaft generally referred to by numeral I6, the portions of which from the follower plate I'I downwardly to the upper portion of the magazine I3 having a wide threaded portion I8, while the portions of the shafts within the magazine I3 have a very fine thread I9.

The lower end of each shaft I 6 has a bevelled gear 20 which mesheswith a bevelled gear H on the corresponding end of the horizontal shaft 22 which is located in the lower portion of the magazine I3. A worm 23 is provided on the intermediate portion of the shaft 22 and this meshes with the pinion 24 on the short shaft 25, which shaft extends through the closure plate I5 and has the removable crank handle 26 thereon.

As shown in Figure 1, the follower plate I! is urged downwardly by the springs 21. When the crank 26 is turned in one direction, the slats 8, the pintles of which project into the grooves of the spiral shaft I6, are fed upwardly and eventually into the magazine I0 against the spring tension of the follower II.

When the crank is rotated in the opposite direction, the slats will be fed downwardly as the pintles I are taken in by the groove of the spiral shaft. As many of these slats as desired can be fed downwardly from the magazine II] to assume the position shown in Figure 5. On the other hand if the slats are stacked in the lower magazine I3 with their pintles engaging in the finely threaded portion of the shaft I6, the operation is somewhat different in that the pintles do not have to feed into the groove of the shaft as they are already engaged in the grooves of the finely threaded portions I9.

Thus it can be seen that the slats can be fed from one magazine or from the other. In other words the slats can be partly fed into the upper magazine, or can be partly fed into the lower magazine depending upon which portion of the opening is to be obscured.

As the slats will assume the horizontal position shown in Figure 5 due to gravitation resulting from the particular disposition of the pintles I, the means generally referred to by numeral 28 is employed for setting the slats in interlapping position. This means consists of a plurality of short arms 29 each provided with a finger at its free end denoted by numeral 30. These arms 29 are pivotally secured as at 3| to one of the columns 6 and a connecting rod 30a is pivotally connected as at 32 to each of these arms. When the slats are in the position shown in Figure 5, the arms 29 can be freely moved without affecting the slats. In other words, the arms are in position now so that when the slats themselves are moved they will abut the fingers 30 and will become tilted so as to shut off light to the extent desired. In other words, the feeding .of the slats by the screw shaft I6 not only disposes these slats into one magazine or the other, but serves to angularly set these slats to the desired degree after the abutting means 28 has been disposed into operative position.

It is desirable that the aforedescribed blind be employed with old or new building constructions and that the assembly can be mounted in a complete metal window casing in a convenient and satisfactory manner.

Furthermore, the plate I5 is hinged as at I4 and can be lifted after removal of the handle 26 to permit removal and cleaning of the slats in a convenient manner.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the. spirit and scope of the invention as claimed hereinafter.

Having described the invention what is claimed as new is: 1

l. A blind comprising a frame structure having a magazine at one end-thereof, a pair of screw shafts, a plurality of slats each provided with a pintle at each end thereof for disposition into the groove of the corresponding screw shaft, and means for rotating the screw shafts, said magazine including a spring-pressed follower against which the slats are urged by the screw shafts.

2. A blind comprising a frame structure having a compartment at one end thereof, a pair of screw shafts vertically disposed in the frame and each having one end portion disposed in the said magazine, a plurality of slats each provided with a pintle at each end thereof for disposition in the groove of the corresponding screw shaft, means for rotating the screw shafts, the ends of the screws located in the said compartment having a slower thread groove than the portions of the shafts outside of the said compartment to permit compact stacking of said plate in the said compartment.

3. A blind comprising a frame structure having a magazine at one end thereof, a pair of screw shafts, a plurality of slats each provided with a pintle at each end thereof for disposition into the groove of the corresponding screw shaft, means for rotating the screw shafts, said magazine including a spring-pressed follower against which the slats are urged by the screw shaftsand a compartment in the opposite end of the frame structure, the ends of the screws located in said compartment having a slower thread groove than the portions of the screw shafts outside of the said compartment to permit compact stacking of said slats in said compartment.

ALLEN DURRE.

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