US1922775A - Sliding window - Google Patents

Description

E. MUNKERT Aug. 15, 1933.

SLIDING WINDOW Filed Feb. 24, 1932 2 Sheets-Sheet 1 Ira/e Wrap:- EMZZ MuW/ferf SLIDING WINDOW I Filed Feb. 24, 1932 2 Sheets-Sheet 2 Patented Aug. 15, 1933 PATE FFI f SLIDING WINDOW Emil Munkert, Esslingen-on-the-Neekar, Wurtemberg, Germany, assignor to FritzHopmeier, Stuttgart, Wurtemberg, Germany Application February 24, 1932, Serial No. 594,914,

and in Germany February' 14, 1931 6 Claims.

I have filed applications in Germany Feb. 14, 1931, and Switzerland Feb. 17, 1931..

This invention refers to improvements in or relating to windows. f

According to the invention there is provided a window wherein the weight of a pair of sashes is counterbalanced, and the object is that the counterbalancing means shall act upon the upper sash by being suspended from I pivoted lever means associated with the" said sash, in such a manner that upon movement of the upper sash, the effective point of connection between the counterbalancing means and the upper sash is also moved.

Other features of the invention are hereinafter particularly described and set forth in the claims.

In order that the said invention may be clearly understood and readily carried into eiiect, the same will now be described more fully, by way of example, with reference tov the accompanying drawings, in which:--

Figure 1 is a longitudinal sectional view through the entire window construction,

Figure 2 is an end view of the window frame showing the various parts corresponding to Figure 1,

Figure 3 is a longitudinal section of the window construction showing the window'casements and in different positions than those shown in Figuse 1,

Figure 4 is an end view of the window frame showing the various moving parts in the positions corresponding to Figure 3, and

Figures 5 and 6, are end views of the window frame showing the various moving parts in certain positions on an enlarged scale.

Referring to the drawings, the levers and the counterweights are placed within the boxes on both sides of the window frame a; The belt for moving the easements is placedwithin the righthand box. The casement b is pivoted at each side on a lever c, which leveris supported by a turnbolt. Another operating lever 6 (Figures 5 and 6) inside the box, corresponds with the lever c, and is provided with a segment 1 of a cog-wheel which engages a cog-wheel segment g of the lever h. The lever h is pivoted at one end by means of a bolt 1 and at its free end supports a pulley k for carrying a wire or the like.

The upper casement is also pivoted on a lever Z turning in a bearing disposed on the frame of the window. The lower casement m is guided as usual by a bolt or the like projecting into a vertical groove of the window frame. The weight of the lower casement m is compensated at both sides of the pane by a wire nand by the counterweight 0 being within the box. The wire n is fixed on the lower rail of the lower casement m, runs upwardly along this'casement within the window frame and is guided by a pulley p, the wire n then runs around a guiding pulley q placed at the top of the counterweight o and around a pulley 1c and finally it is led to the free end of the lever 6, having started from this lever e and having passed the guiding'pulleys s along the outside of the window-box and along the back of the said box.

As elearly indicated on the drawing, the wire n is fastened to the lever e and it passes around pulleys s as indicated by r. The member 1" could be a wire, but since a wire is not very easily grasped by'the hand in order to operate the window, it is advisable to provide the rope or strap section 1" as indicated, one end of which is secured to the lever eand' the other end is secured as indicated in back of the weight 0. This makes it very easy to grip the member 1' in order to operate the window, and as clearly indicated the section 1 and the wire n are secured to the lever e.

The above described arrangement operates as follows:

The two easements b and m of the window being closed the two levers e and h form nearly a straight line, see Figure 5, and the lever c is parallel to the window frame. When the belt 1' is pulled, the ends of the levers e and it come together and the lever c forces the top of the windowoutside the lower edge of this easement serving as an axis or pivot point, see Figure 1.1.

In this position of the easement, the air will enter the room and leave it, but no rain, etc., can enter. In this position, the weight of the upper casement b is compensated for by the counterweight 0 which has moved downwardly for a short distance during this action.

By pulling the belt 1' further, the two levers e and it will become nearly parallel and the upper casement will be pushed out of the groove and to a'position outside the window frame by the lever Z. In this position the easement b is nearly parallel at a certain distance from the frame by turnbolts and the lower casement being slidably supported in the frame; and a counterweight in the frame for both window easements, the point of influence of the counterweight being movable with the movement of the upper window.

2. A window construction, comprising a window frame; a pivoted window casement pivotally mounted in the frame; a sliding window frame slidably mounted in the frame; a counterweight in the frame for both easements; and'means for connecting the easements with the counterweight so that each will be counterbalanced thereby. V

3..A window construction, comprising a window frame; 'a window casement mounted in the frame; a plurality of levers for pivotally mounting said window casement in the frame; a second window slidably mounted in the frame; a counterweight in'the frame for both easements; and means for connecting the easements with the counterweight so that each will be counterbalanced thereby.

4. A window construction according to claim 3, in which the means for connecting the casements with the counterweight includes an operating lever in the frame connected to and operating with one of the pivot levers of the first mentioned casement and a wire having one end secured to the operating lever and the other end to the second-mentioned window casement and intermediately to the counterweight.

- '5. A Window construction, comprising a window frame; a window casement mounted in the frame; a plurality of levers for pivotally mounting said window casement in the frame; a second window slidably mounted in the frame; a counterweight in the frame for both easements; an operating lever in the frame secured to and movable with one of the levers of the first-mentioned window casement; a second lever in the frame operatively connected to the operating lever; and a wire having one end secured to the operating lever and the other end to the second-mentioned window casement, and intermediately t0 the counterweight, the second lever cooperating with the wire and comprising the point of influence of the counterweight.

6. A window construction according to claim 5, in which a belt is provided cooperating with the operating lever to open or close the first-mentioned' window casement;

EMIL MUNKERT

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