DE39196C - Innovation in ventilation window flaps - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 37: Building construction.

A. NOVOTNY in BERLIN. New to ventilation window flaps.

Fatentirt in the German Empire from July 14, 1886.

The construction shown in the drawing enables, not only for straight windows, but also an easily movable and tightly closing glass blind for arched windows simple to manufacture and for double windows without the use of racks and gears etc.

Fig. Ι is an arched window with a glass blind shown in elevation and in partial section,

Fig. 2 is the vertical section after AB of Fig. Ι seen with the blind open to the left,

Fig. 3 shows the vertical section according to AB of Fig. Ι with the shutter closed to the right, with the window frame and lining,

4 shows the vertical section through a double arched window with a glass blind,

Fig. 5 is the horizontal section according to CD of

Fig · ι,

6 shows the horizontal section through the resilient hinge of a louvre flap.

In the window sash α there is a similar angle iron frame b by means of countersunk screws ss. . ., Fig. 1 attached. Each individual louvre flap cc ... is framed and held at both ends by sheet metal clips dd, FIGS. 5 and 6, which are provided with the laterally bent ^{tabs / Z 1.}

The rivets n ¹ n ^x and the movable pins η η go through the latter. . . Which serve as the fulcrum of the louvre flaps cc in the angle iron frame b , Fig. 1 to 6. The pins η η. . . must be movable, ie pull out a little when opening the flaps cc so that the ends of the flaps cc cut along the curve of the window sash ¹ can rotate freely in the angle iron frame b. For the same purpose, the flange b ^{1 of} the frame b , which goes towards the inner side of the window sash a, is cut out at the points where the pivot points of the louvre flaps are located, FIGS. 1 and 2.

In these cutouts, the side lobes e ^! e ^{J of} the hinges ee. . ., through which the dd on the tabs II ... of the sheet metal chambers. . . riveted pins nn ... pass freely, while the front hinge parts e ' ² e ² . . . are firmly riveted to the front flange of the angle iron frame b , Fig 1 and 6. The cutouts of the inner flange of this frame are covered by thin cover plates ff. . covered against which the spiral springs surrounding the pins η η gg. . . support.

The other ends of these springs press against the nuts mm ... which on the free ends of the pins nn. . . are screwed, Fig. ι and 6.

The serving as bases overlap / '7 ¹ ... are extended sämmtlich in one direction and by the rail means of rivets ρ rotatably connected with each other.

The lower end of the rail ρ is connected by a chain k to the lever h , to which the pull \ to open the blind is attached.

If the blind is opened, ie all the flaps cc ... are turned in one direction, the pins nn riveted to the flaps II ... pull themselves together. . . more or less from the movable hinge parts e ¹ e '

out and tension the spiral springs gg ..., which in turn cause the flaps cc ... to snap back, ie close, as soon as the pull ^ on the lever h is released.

The effect of the spiral springs gg is reinforced by the spring q pressing on a pin ο at the upper end of the rail ρ , which always pushes the rail ρ upwards and thereby glues and holds the louvre flaps cc ... firmly against each other. .

Claims (1)

Patent claim: In the case of ventilation window flaps, the arrangement of the pins Mw ... riveted to the flaps II ..., which freely pass through the joint parts e ¹ e ^l . . . and the cover plate // go through, when opening the blind the spiral springs gg ... between the nuts mm ... and press the panels // ... together, thereby creating a tension that causes the blind to snap back and close as soon as the pull % is released. For this purpose ι sheet of drawings.