US1569847A - Automatic window ventilator - Google Patents

Description

Jan. 19 1926.

- v. M. ALLEN AUTCMATIC WINDOW VENTILATOR Filed Aug ust 4, 1920 2 Sheets-Sheet 1 n w m i g @W a w P 6 .M MM m J. M J 2 mm M F 4 "v l 4 d V In M 9 K a r ll m l 4 x 2 H W Z x n( Ill] l 2 w U w W m m Jan; 19 1926.

v. MQALLEN AUTOMATIC WINDOW VENTILATOR Filed August 4, 1920 2 Sheets-Sheet 2 Patented Jan. 19, 1926.

PATENT OFFICE.

VICTOR ALLEN, F WAVERLY, NEW YORK.

AUTOMATIC WINDOW VENTILATOR.

Application filed August 14, 1920. Serial No. 403,567.

To all whom it may concern Be it; known that I, Vrcron M. ALLEN, a citizen of the United States, and a resident of Waverly, in the county of Tioga and State of New York, have invented certain new and useful Improvements in Automatic Window Ventilators, of which the following is a specification.

This invention relates to window ventilators and has for its object the provision of novel means for setting the ventilator panels in a desired position and locking them; in the set position or permitting them to automatically close under the force of an abnormal wind.

A further object is to provide simple means for causing the ventilator to close when the force of the wind increases.

The invention is illustrated inthe accompanying drawings and will be hereinafter fully described, the novel features being subsequently pointed out in the claims.

In the drawings- Fig. l is an elevation of my improved ventilator viewed from the outside and in closed 3 position.

' I Fig. 2 is a horizontal section on the line Fig. 3is an enlarged transverse section on the line 33 of Fig. 2.

Fig. 4 is an enlarged detail section taken transversely through the adjusting devices.

Fig. 5' is an enlarged section on the line 5-5 of Fig. 3.

Fig. 6 is a section on the line 66 of Fig. l5, and

Fig. 7 'isa detail showing the panel-adjusting crank in elevation and the sleeve for swinging the same in longitudinal section. In carrying out the invention I employ a frame 1 which is adapted to set in a window frame below or against a. raised lower sash, andthe end bars ofwhich are hollow as clearly shown in Figs. 2, 3, 4 and 5. Within the central opening of the frame, I pivotally mount aplurality of panels 2 which are preferably of transparent lass but may be oftranslucent glass or ot er material, the, strips of materialbeing fitted at" their ends in metalholders 3. The holders 3 are somewhat conventionally shown as the specific construction is not a part of the resent invention, but it may be stated that t eyare designed particularly to facilitate the ;re- .moval of a broken panel and the insertion of a new one and also to permit the panels to lie in close overlapping relation in closed position. The pivots of the several panels extend into the hollow end members of the frame and connecting bars at are pivotally attached to the panels near the outer ends ofthe same so that the panels will swmg lIl unlson.

To the ends of the pivots 5 of two panels, I secure angle levers or supporting arms 6 which extend from the pivots through slots in the outer walls of the casing, of hollow end members, as shown in Figs. 2 and 3, and to the outer ends of these levers or arms I secure light but strong plates or sheets 7, which are disposed at the sides of the ventilator opening, as will be clear on reference to Figs. 1 and 2. The ventilator panels are intended to be normally in open position, that is, inclined downwardly and outwardly and are arranged to be closed by'a high wind blowing thereon. As the panels, however, present their lower edges to the wind, it frequently happens that the surface presented to the wind is not sufficient to effect the desired turning movement and the blast passes into the room with disastrous results. I, therefore, provide the vertical blast-receiving plates 7 which present a broad area to the air currents and with the angle levers 6 the force of the wind on said plates is many times greater than if exerted against the panels and thereby insure the desired operation of the panels.

To pivot 8 of one of the panels, I secure a oar or rock shaft 9, which is disposed within the adjacent casing or hollow end member of the frame in axial alinement with the pivot. To this rock shaft or bar, I secure a crank arm 10, which projects toward the inner side of the frame and has an ar uate branch 11, rising from its free end and terminating over the rock shaft when the ventilator is closed. The branch 11 passes through the diametrically opposite lcngitudinal slots 12 in the outer end of the sleeve 13 which is threaded both interiorly and exteriorly and has its inner end engaged in theinteriorly threaded cylindrical nut 14 which extends through the inner wall of the frame and is rovided with an external annular rib or ange 15 which fits between said inner wall and a cap 16 secured thereto. The nut is thus swiveledv in the wall so that it may rotate but can not move endwise while the sleeve 18 may move endwise but is prevented from rotatin; by its engagement with the branch 11 oi? the crank 10. The inner end of the nut 14 is milled or otherwise finished so that it may be readily manipulated by hand, and in the. outer end of the sleeve 13 is fixed a pin 17 carrying a roller 18, which bears against the outer edge of the branch 11, as shown most clearly in Fig. 7. It will be noted that the longitudinal axis of the sleeve 13 passes above the rock shaft 9 and the point of engagement of the roller 18 with the branch 11 is eccentric to the rock shaft. Consequently, if the sleeve 13 be caused to move inwardly, a pull will be exerted on the crank to rock the shaft and open the ventilator and the open adjustment will be maintained until the sleeve is moved outwardly. Within the sleeve 13 is fitted a second sleeve 19 having a threaded engagement with the first described sleeve. The outer end of the sleeve 19 is adapted to bear upon the inner edge of the branch 11 so that if the sleeve 19 be caused to move outwardly, a push will be exerted upon the crank to rock the shaft 9 and swing the panels to closed position. By properly setting the two sleeves, the ventilator may be lo-ked in fully closed or full opened posit'ion, or in any intermediate position.

The inner sleeve is adjusted by a plunger 20 mounted concentrically in the inner end of the sleeve and provided with a milled head 21 or other convenient form of han dle. In the side of the plunger is a longitudinal groove 22, engaged by a pin 23, in the sle ve so that while there may be relative longitudinal movement between the sleeve and the plunger neither can rotate relative to the other. A block 24 in the outer end of the sleeve 19 is held in frictional engagement with the branch 11 by a spring 25 arranged between the block and the plungor. this arrangement constituting a governor to insure a smooth easy movement of the panels in opening or closing.

To the rock shaft 9, at one side of crank 10. I secure a lever 26, which stands vertically when the ventilator is closed and at a right angle to said lever I secure a second lever 27 which extends inwardly. To the free end of the lever 26 I secure a chain or cable 28, which carries a weight 29 on its lo ver end. the intermediate portion of the cab e passing through a fork 30 on the end of the lever 27. hen the ventilator is closed and the lever 26 is vertical, the force of the weight is exerted through the horizontal lever 27 to turn the shaft 9, but as the opening movement continues the force is gradually transferred from the lever 27 to the lever 26, so that it will be effectively applied from the beginning to the close of the movement. In closing the ventilator, the initial strain of lifting the weight is borne by the lever 26, which is longer than the lever 27, in order to meet the greater demand upon it. The weiglit tends to hold the ventilator and, therefore, aids the opening operation performed by the sleeve 13. If the said sleeve be adjusted outwardly and the sleeve 19 be adjusted inwardly, the ventilator will be free to operate automatically, being yieldably held open by the Weight and closing against the action of the weight when the wind gets high. It will thus be seen that I have provided a very simple and eliicient mechanism whereby the ventilator panels may be set in any desired position and held in that position, or may be permitted to oven and close automatically as the force -0 the wind varies.

The ventilator frame may be equipped with a screen 31, and a sash 32, in its inner side so that insects or rain may be prevented from entering without requiring the removal of the ventilator from the window.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is-- 1. In a window ventilator, the combination of a plurality of PlVOtHlly mounted panels, means for causing the panels to move in unison, yieldable means to hold the panels normally in open position, and blast receim ing plates disposed at the endsof the panels and connected with some of them whereby to close the panels under abnormal wind pressure.

2. In a window ventilator the combination of a plurality of pivotally mounted panels, means for causing the panels to move in unison, yieldable means for holding the panels normally open, arms extending from the pivots of some of the panels, and blast receiving plates carried by said arms at the ends of the panels.

3. In a window ventilator, the combination of aplurality of pivotally mounted panels, means for causing the panels to move in unison, the pivot of one of the panels being extended, a pair of levers extending laterally from said extended pivot at a ri ht angle to each other, a flexible suspension member secured to the upper lever and passing across the end of the lower lever, and a weight carried by said suspension member.

4. In a window ventilator, the combinm tion of a plurality of swinging panels, means for causing the panels to :move in unison, a crank extending from the pivot of one panel, a air of longitudinally movable concentric s eeves having their outer ends in engagement with the opposite edges of the crank, and means for adjusting said sleeves separately or together whereby to open or clOse t-he panels and lock them in the set position.

5. In a window ventilator, the combination of a plurality of swinging panels, a

crank extending from the pivot of one of the panels, means for causing the panels to swing in unison, a longitudlnally movable sleeve provided at its outer end with a longitudinal slot through which said crank passes,

means extending across the end of the sleeve to engage the outer edge of the crank for opening the panels, and means for closing the panels. a

6. In a window ventilator, the combination of a plurality of panels mounted to swing in unison, a crank extending from the pivot of one of the panels, means acting on the crank to open or close the panels, and a governor block frictionally engaging the crank to insure a smooth easy movement of the panels in opening or closing.

7. In a window ventilator, the combination of a plurality of pivoted panels mounted to swing in unison, the pivot of one of the panels being extended, a crank extendin from said pivot, a sleeve having a slotte outer end receivin said crank, a second sleeve threaded into t e first sleeveto bear upon the crank, a plunger fitted within the inner end of the second sleeve to rotate therewith but capable of relative longitudinal movement, and a nut having threaded external engagement with the inner end of the first sleeve and held against longitudinal movement.

Signed at Waverly, New York, this fif teenth day of March 1920.

VICTOR M. ALLEN.

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