US2926398A - Window raising mechanism with controlling planetary gear train - Google Patents

Description

March 1, 1960 H. MANDEL 2,926,393

WINDOWRAISING MECHANISM WITH CONTROLLING PLANETARY GEAR TRAIN Filed Feb. 3, 1958 INVENTOR. HENRI MA NDE L ATTORNEY United States Patent WINDOW RAISING MECHANISM WITH CONTROL- LING PLANETARY GEAR TRAIN Henri Mandel, Bronx, N.Y. Application February 3, 1958, Serial No. 712,924

2 Claims. (Cl. 211-53) Myinvention is an improved window raising apparatus having planetary controlling means and a stop attachment by which the window can be raised fully or partly to any desired height and held in such position.

'An important object of my invention is to provide window raising apparatus comprising members in the form of sash or slats which are actuated by parts under tensionsuch as springs to move into fully or partly open position, said parts being disposed in the frame or casing of the window. In one design, a gear train can be so mounted that it will be actuated by other part or parts ofthe window as it is opened, but is associated with stop mechanism which can easily be operated to release the gear train so that the parts under tension may pull as required; such stop mechanism when released causing the gear train to come to a standstill so no further lifting will take place.

The invention also comprises special stop attachments by which the members of the window can be secured in any open or partly open position.

The drawings illustrate several embodiments of this invention and the novel features are pointed out in the claims. But this disclosure is for purposes of explana tion only and variations may be adopted without deviating from the characteristics which distinguish the invention.

On the drawings:

Figure 1' is a front view of a window frame and sash with raising 'and controlling means according to my invention.

Figure 2 is a horizontal section of the line 2--2 of Figure 1.

Figure 3 is a section on the line 33 of Figure 1.

Figure 4 shows a stop attachment for checking the window at any desired point when being opened.

Figure 5 is a view of a detail of part of the train.

Figure 6 shows diagrammatically, parts being broken away, the members of a louvre or blind for a window.

Figure 7 is an end view of part of the means for supporting the last-named construction.

Figure 8 is a detail of part of the window of Figure 6.

Figures 9 and 10 show guide means for the rack bar shown in Figures 1, 3 and 6.

Referring first to Figures 1 to 5 inclusive, the numeral 1 indicates a window casing containing a lower sash 2 and an upper sash 3. These sashes slide up and down in grooves or channel-shaped guideways '4 and 5 respectively in the window casing, which may be of metal or wooden molding strips along the inner edges of the casing having the grooves between them. The lower window is raised by the action of springs 6 in the casing 1; these springs being in the grooves 4 and attached to studs 7 on both sides of the lower window sash 2, and at their upper ends to studs 8 fixed at a suitable height in the bottom of the grooves 4. The springs 7 are under tension when the lower sash 2 is closed and act to raise the lower sash whenever they are free to operate.

Mounted on the lower sash 2 at one side, such as the right, and fixed to the sash 2 is a rack bar 9 which extends from a relatively low point on the sash 2 in the groove 4 up as far as may be needed for proper opera tion. The casing 1 is slotted along the bottom of the groove 4, so that the bar 9 may project along its whole length into the casing 1. Adjacent the sash is a gear train comprising a pinion 10 which is connected to a gear 11, the two gears being mounted on a journal 12 fixed to a bearing inside the casing 1, and the pinion 10 meshes withthe rack bar 9. The wheel 11 meshes with another pinion 13, rigid with a gear 14, which in turn meshes with a pinion 15 that carries rigid therewith another gear wheel 16. The last gear wheel meshes with a small pinion 17, and all these pinions and gears are of course mounted to rotate freely on small studs or journals inside the casing 1. The pinion 17 carries a rotatable transverse member or projection 18 which turns with it, but can be held against rotation by a slidable stem 19 mounted in the casing 1 and projecting to the outside on the front face thereof, where it terminates in a knob 20. Inside the casing, the stem 19 bears a round transverse plate or projection 21, normally in position to stop the rotation of the part 18. The stem is mounted in a U-shaped bearing 22, fixed within the casing, and in this bearing the stem 19 is encircled by a spring 23 which bears at one end against a pin 24. Usually, this spring will act upon the pin 19 to move the stem outward, so that the plate 21 is in position to engage and obstruct the rotatable member 18. When the knob is pushed inward to compress the spring 23, the plate 21 is moved away from the rotatable member 18 on the pinion 17, releasing it so that the pinion 17 can rotate freely.

In action, when the lower sash 2 is closed and is to be opened, one presses against the knob 20 so as to release the part 18. The springs 6 then lift the Window and the rack bar 9 then turns the pinion 10. Movement is thus transmitted through all the other gears and pinion to the pinion 17 and the window rises as long as pressure is exerted on the knob 20. The window can be stopped at any point by releasing the knob 20, whereupon the spring 23 will move the stem 19 outward and the plate 21 on this stem will stop the member 18, bringing the whole gear train to a standstill. Thus the extent to which the lower sash can be opened is controlled. To lower the window, the sash 2 can be pulled downward. The gear 20 has a ratchet 10a, the gear 11 a spring pressed pawl 11a, so arranged that on the sash 2 being lowered, the pinion 10 will not turn the other gears. See Figure 5. Hence to lower the sash 2, the stem 19 need not be pushed in.

The gear train can, of course, be disposed if desired, so that it extends upward in the casing 1, with the pinion 17 and stem 19 above the other gears and pinions. Also the rack and pinion could be placed on any other pinion and gear in the train.

In Figure 6, I show a channel-shaped member 25 which is mounted vertically in a window opening and has its outer edge turned outward as shown at 26; and pivoted to the member 25 along this edge 26 are channeled members 27 to receive the ends of slats (not shown) of a blind. All the members 27 shown swing on pins 28 in the edge portion 26 and have arms 29 rigidly fixed to their lower sides and connected to a bar 30 movable longitudinally in the channel member 25, the arms 29 of members 27 being united to this bar by pivot pins 31. When the bar 30 moves upward, the various slats in the seat members 27 are turned to closed position. The member 25 is of course long enough to reach from top to the bottom of the window frame and one such member with parts 27 for the opposite ends of the slats will be at each side of the window.

Inside the trough-shaped member. is a rack bar 9 alongside of the bar and. connected thereto by pivot pins 32. This bar has several lateral projections 33 with straight transverse slots '34 therein for receiving the pins 32, which slide in these slots. The bar 9 is long enoughto reach a train of gears (not shown) such as appear in Figure 1 in the window casing bearing the members 25, and when this train of gears is free for operation, they allow bar 9 to go downward, because the bar 30 and members 27 are then pulled down by the springs 6 secured one to each bar 30 at its lower end, the other end of the springs 6 being fixed at any convenient points in the window casing, as before. When the springs pull the rack bars 9 down, they swing the seat members 27 and parts supported thereby to horizontal or open position. The action is controlled by a stem, like the stem 19 shown in Figure 4, and whenever the stem is pushed inward, the gears can rotate and the springs 6 pull down the bars 30 and the bars 9. The opening movement of the louvres or slats in seats 27 can be stopped at any point by releasing the stem 19. The bar 9 has a pin and slot connection 9a with the member 25 and can slide up and down therein.

The gear train for the window of Figure 6 can be located at any convenient point in the member 25 as there will be ample space behind the bar 30 connected to the rack bar 9. See Figure 7. Both the gear train and stop stem 19 are omitted from Figure 6 for the sake of convenience and clearness.

When the louvres are to be closed, the bars 9 and 30 can be moved upward by means of a lever pivoted at 36 to a lug 37 on the side of the member 25 and connected at its inner end through a link 38 and pins 39 to the bar 30. With the louvres closing, the bar 30 moves away from the rack 9, and at opening, the bar 30 can move towards the rack 9 while lowering this rack. As before, a rack and pinion at the gears 10 and 11 render it unnecessary to operate the stem 19 when the parts 27 are swung down. The controlling lever 35 can slide sidewise on its pin 36 and be moved into engagement with a notch 40 in the edge of the member 25 to hold the members 27 and slats (not shown) therein securely in closed positions. Instead of the lever 35, a cord can be attached to the bar 30 and passed up over a pulley. When the cord is pulled, the louvres will be closed.

The gear train can be so mounted that the pinion 17 t 4 is above the pinion 10, which meshes with the rack 9, and this gear train can be mounted in a framework 9b bearing a guide 9c which will keep the rack bar 9 always meshed with the pinion 10, as shown in Figures 1 and 6; this guide being spaced from the sides of the framework by projections 9d. The bar 9 can slide freely in the guide and be attached at its lower end only to the sash 2 so as to be free to move up and down.

Having described my invention what I believe to be new 15:

l. The combination of a window casing, a member movably mounted therein, elongated spring means extending vertically of said casing and connected to said member for moving said member to full or partly opened position, a rack extending vertically of said casing and operatively connected to said member to move said member, a gear train meshing with said rack to be actuated thereby when said member and rack are moved by said spring, a depressible stop mounted in the casing beside. said member, said stop and said train having adjacent parts to be engaged with each other to stop the gear train member and rack, and to be disengaged when the stop is released to permit said gear train to be actuated.

2. The combination of a window casing, a member movably mounted therein, elongated spring means extending vertically of said casing and connected to said member for moving said member to full or partly opened position, a rack extending vertically of said casing and operatively connected to said member to move said member, a gear train meshing with said rack to be aetuated thereby when said member and rack are moved by said spring, a depressible stop mounted in the casing beside said member, said stop and said train having ad.- jacent parts to be engaged with each other to stop the gear train member and rack, and to be disengaged when the stop is released to permit said gear train to be actuated, said member extending transversely of the casing and being pivotally mounted in said casing at its opposite ends.

References Cited in the file of this patent UNITED STATES PATENTS 681,863 Wallace et al. Sept. a, 1901 744,996 Berry Nov. 24, 1903 998,324 Clay July 18, 19,11

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