US3051472A

US3051472A - Window raising apparatus with controlling means

Info

Publication number: US3051472A
Application number: US824808A
Authority: US
Inventors: Mandel Henri
Original assignee: Individual
Current assignee: Individual
Priority date: 1959-07-03
Filing date: 1959-07-03
Publication date: 1962-08-28
Anticipated expiration: 1979-08-28

Description

Aug. 28, 1962 H. MANDEL 3,051,472

WINDOW RAISING APPARATUS WITH CONTROLLING MEANS Filed July 3, 1959 H. wif a I N V EN TOR. HEM?! M/l/VDEL United States Patent Ofilice 3,051,472 Patented Aug. 28, 1962 3,051,472 WINDOW RAISING APPARATUS WITH CONTROLLING MEANS Henri Mandel, Clitfside Park, NJ. (1 W. Trmont Ave, Bronx 53, N.Y.) Filed July 3, 1959, Ser. No. 824,808 2 Claims. (Cl. 268-122) My invention is an improved window raising apparatus having novel controlling means such that the window can be quickly moved to full or partly open position, and hold in position thereat; and it includes a knob or pushbutton which enables the opening of the window to take place.

It is an important object of my invention to provide window apparatus comprising members, such as sash or [balanced slats, actuated by spring means under tension, said means being disposed in the frame or casing of the window. In one construction, a gear train is so mounted that it will be operated as the window is opened, but is associated with stop mechanism which can easily be manipulated to release the gear train, so that the means under tension may pull as required; such stop mechanism, when released, causing the gear train to come to a standstill; so that no further opening of the window members will take place. In the drawings several embodiments of this invention are illustrated, and the novel features are pointed out in the claims. However, this disclosure is for purposes of explanation only and variations in structural details may be adopted without deviating from the characteristics which distinguish the invention.

On said drawings FIGURE 1 is a front view of a window frame and sash with raising and arresting means according to my invention.

FIGURE 2 is a horizontal section of the line 22 of FIGURE 1.

FIGURE 3 is a section on line 33 on FIGURE 1.

FIGURE 4 is a side view of a controlling gear train used with my invention,

FIGURE 5 is a view of .the opposite side of said gear train.

FIGURES 6 and 7 show details of part of the train.

In FIGURES 1 to 6 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

channels

4 and 5 respectively in the window casing, which may be of any suitable construction, of metal or wood with 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 channels 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 take effect.

Mounted on the lower sash 2 at one side, such as the right, and fixed to the sash 2 is a metal strip 9 which extends from a relatively low point on the sash 2 up as far as may be needed for proper operation. The strip or bar 9 is flat and twisted so that its opposite long edges present true spiral turns from top to bottom. It is secured at its lower end to the lower part of the sash 2 by a suitably formed connector piece 10. Adjacent the sash near the topwhen the sash is closed, is a bracket 11, afiixed inside the casing 1, the lower end 12 of this bracket being bent laterally into line with the strip 9, and rotatably mounted on the end 12 is a bevel gear 13, within which is a part having a narrow central opening 14 of the same shape as a cross section of the strip which passes through this opening; and, as it is fixed to the sash 2 at its lower end and is thus held against rotation, this strip will slide through the gear 13 when the sash goes up, and the spiral edges of the strip will turn the element on gear 13. The strip 9 and connector 10 constitute an arm for connecting the window to the gear train with the stop for releasing the window member to be opened by the spring.

On the bracket 11 above the end 12 is a bevel pinion 15 meshing with the gear 13, and above the gear 15 on the bracket are other gears the last of which is mounted on a spindle 16 that carries a wheel 17 having radial arms 18. All pinions and gears above the bevel gear 13 are of course mounted to rotate freely on the bracket 11.

A sl-idaible stem 19 is mounted on the bracket 11 above the wheel 16, and projects to the outside on the front face of the casing 1, where it may carry a knob 30. Inside the casing, the stem 19 bears a lateral arm 21, normally in position to stop the rotation of the wheel 16. The stem is mounted in a U-shaped bearing 22, fixed to the bracket 11 at its top and in this bearing the stem 18 is encircled by a spring 23, which bears at one end against a pin 24 on the stem 18 in the bearing piece 22. Usually, this spring 23 will act upon the pin 24 to move the stem 19 outward, so that the arm 21 is in position to engage one of the arms 18 and obstruct the rotatable member 17. When the stem 19 is pushed inward to compress the spring 23, the arm 21 is moved inward away from the rotatable member 17 on the spindle 16, releasing the wheel 17 so that the Wheel 17 and all the gears below it 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 wheel 16. The springs 6 then lift the window sash 2 and the spiral strip 9 then turns the gear 13 which has a hub or boss 25 that can rotate in the end 12 of the bracket 11. Movement is thus transmitted through all the other gears and pinions, and the sash 2 rises as long as pressure is maintained 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 arm 21 on this stem will stop the member 16, bringing the whole gear train to a standstill. Thus the extent to which the lower sash can be raised and opened is controlled. To lower the window, the sash 2 can be pulled downward, without regard to the position of the stem 19.

For this purpose the gear 13 has ratchet teeth (FIG. 7) 26 in the bottom of a seat or depression 27 in its upper face and the gear and its hub have a central bore receiving a sleeve or bushing 28 having a collar or head 29 by which it is supported in the cavity 27 of the gear 13. At its lower end the sleeve 28 has a flange 30 below the bracket, with a spring 31 encircling the sleeve 28 between the bracket 11 and collar or flange 30. On the lower face of the head 29 are ratchet teeth 32. The spring 31 pulls the sleeve 28 and gear 13 downward and holds the ratchet faces of the gear 13 and sleeve 28 in engagement. The ratchet teeth on the gear 13 and head 29 of the sleeve 28 are so arranged that when the strip 9 moves upward in the sleeve, it will turn the gear and sleeve together; but on the down movement of the sash 2 and strip 9, the ratchet teeth on the head 29 of the sleeve will be rotated in the opposite direction and the head 29 will slip in the gear 13 without turning it, the spring 31 then yielding to permit the sleeve 28 and head 29 to rise in the gear 13. Hence even if the stop arm 21 then holds the wheel 16 and gear train and gear 13 motionless, the sleeve can still turn and allow the sash 2 to be lowered and shut.

The gear train on the bracket 11 has a governor to prevent too rapid rotation of the gears when the sash 2 is lifted by the spring 6 (see FIGURES 5 and 6). On the rear face of the bracket is a circular rim 57 concentric with the shaft or spindle 16, having a back 58 fixed thereto and secured on the bracket 11. The rim is open on the other or inner side, and in it is a crossbar 59 fixed to the spindle 16, and having radial slats 60 therein. On this bar clearing the rim 57 are slidea-ble governor weights 61 with studs 62 movable in the slots extending through the bar 59 and into the rim 57. Whenever the gears rotate too -fast the weights 61 are urged outward by centrifugal force and the pins or studs 62 engage the inside of the rim 57, and the motion of the gears is checked.

It can thus be seen that the apparatus can be set in operation by means of the pushbutton or knob 20. The window sash member or slats will then be actuated to open position and the movement of the sashes or slats can be stopped at any time merely by releasing the pushbutton.

My invention can be used in operating sliding doors as well as windows, and other constructions capable of being actuated in a similar manner.

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

1. The combination of a window casing, a member movably mounted therein, spring means extending vertically of said casing and connected to said member [for moving said member to full or partly opened position, a bar with spirally curved edges extending vertically of said casing and operatively connected to said member to be moved with said member, a gear train having a rotary element surrounding and meshing with said bar to be actuated thereby when said member and bar are moved to be opened by said spring, and a depressible stop mounted in the casing beside said gear train, said stop and said train having adjacent parts to be engaged with each other to stop the gear train, member and bar, and to be disengaged when the stop is released to permit said rotary gear train to be actuated, said element and said bar having a one way ratchet connection to enable said member to be retracted without operation of said gear train.

2. The combination of a window casing, a member movably mounted therein, spring means extending vertically of said casing and connected to said member for moving said member to full or partly opened position, a bar with spirally curved edges extending vertically of said casing and operatively connected to said member to move said member, a gear train having a rotary element surrounding and meshing with said bar to be actuated thereby when said member and bar are moved to be opened by said spring, and a depressible stop mounted in the casing beside said gear train, said stop and said train having adjacent parts to be engaged with each other to stop the gear train, member and bar, and to be disengaged when the stop is released to permit said gear train to be actuated, said gear train having a governor attached to regulate the speed thereof.

References Cited in the tile of this patent UNITED STATES PATENTS 727,812 Lawrence May 12, 1903 955,476 Reynolds Apr. 19, 1910 1,354,048 Lindstrom Sept. 28, 1920 1,677,643 Leren July 17, 1928 FOREIGN PATENTS 128,491 Australia July 26, 1948