US2039970A - Window ventilation apparatus - Google Patents

Description

May 5 1936- A. MCLAUGHLIN WINDOW VENTILATION APPARATUS Filed Feb. 5, 1932 2 Sheets-Sheet l INVENTOR HZZen m lduyhlzn 2 Sheets-Sheet 2 Filed Feb. 5, 1932 lO-i INVENTOR HZ Z err M 1 avyfil z'rz BY flm 04 Mb auu/ ATTORNEYS Patented May 5, 1936 UNITED STATES PATENT! OFFICE 10 Claims.

This invention relates to room ventilating apparatus and it has particular relation to ventilating apparatus applicable for mechanically circulating air through windows of rooms.

An object of the invention is to provide an inexpensive and convenient ventilating apparatus which is attachable directly to the sash of a kitchen or any other window where ventilating apparatus is desirable and which is operable when the window is in a closed position; to provide ventilating apparatus adapted to be secured in operative position in a closed window which does not appreciably diminish the amount of light normally received through the window from the out- 5 side and which can be employed without curtain guards, screens and other accessories now generally required for the operation of window ventilating apparatus; and in general, to provide a neat appearing, compact and efflcient window ventilating apparatus which can be operated at any time merely by pulling a cord or by actuating some similar mechanism controlling device.

In the drawings:

Fig. 1 illustrates an ordinary glass or other transparent window in which ventilating apparatus constructed according to the principles of this invention is embraced.

Fig. 2 is a fragmentary view of the window ventilating apparatus illustrated by Fig. 1 as it would appear installed in the window casing of a house. The figure is taken substantially on line 2-2 of Fig. 1.

Fig. 3 is a fragmentary cross-sectional view of the structure illustrated by Fig. 1 except that it shows the structure as it might appear on line 3-3 thereof.

Fig. 4 is a cross-sectional view taken substantially on line 4-4 of Fig. 3 and illustrating par- 40 iiicularly a motor switch controlling mechanism embraced in the apparatus.

Fig. 5 is a fragmentary front elevational view of a window having ventilating apparatus constructed according to this invention secured thereto; that is, the view illustrates the window structure as it might appear from the outside of a building.

Fig. 6 is a fragmentary cross-sectional view of the structure illustrated by Fig. 1 as it might appear on line 66 therein.

Fig. 7 is a cross-sectional view of a window ventilation apparatus illustrating another form of ventilation controlling apparatus embracing the principles of this invention.

Fig. 8 is a view of the apparatus illustrated by Fig. 7, taken substantially on line 8-8 thereon.

Fig. 9 is a. cross-sectional view of the structure disclosed by Fig. 7 except that in Fig. 9 the parts of the mechanism are shown as they might appear looking in the direction of the arrows from line 9-9 on Fig. 8.

Fig. 10 is a cross-sectional view of the structure substantially as shown in Fig. '7 except that the parts are shown on a smaller scale and in a different operative position.

Fig. 11 is a view also upon a reduced scale of the structure as illustrated by Fig. 9 except that in Fig. 11 the parts are arranged in a different operative position.

Referring particularly to Fig. 1, a window I ll, employed in practicing the invention, comprises a. rectangular frame or sash I I having a pane of glass or other transparent plate I2 inserted therein. The sash is adaptable for mounting in a win- 0 dow casing either to rotate upon hinges about the edge thereof or (see Fig. 2) to slide within grooves I3 formed by strips I4 secured in spaced relation around the inside of a casing I6.

The pane of glass I2 is provided with an aper- 25 ture of suitable formation in an upper portion thereof, in which a frame I! of an air circulating or ventilating apparatus I8 is mounted. The upper part of the frame I! has an inner edge portion I9 which abuts the lower front edge of the' I upper section of the window sash I I and has also an upwardly extending flange 2| abutting the front surface of the window sash. 'I'he flange 2| is secured to sash II by screws 22 and hence the weight of the frame I! and other appurtenances thereon is almost entirely supported by and is suspended beneath the upper section of the sash. The frame I" also has a recess formed in the outer surface thereof which receives resilient gaskets 23 against which the edges of the glass I2 around the aperture therein are secured by a removable strip 24 and screws 25.

As best illustrated in Figs. 3 and 5 the upper edge of the frame I! has formed integrally therewith a horizontally disposed and outwardly projecting ledge 21, the opposite extremities of which are flanged downwardly as is indicated at 28 for supporting inwardly projecting and aligned pins 29. The inner extremities of such pins are pivotally received in openings formed at the opposite extremities of an upper horizontal portion 3| of a supplemental frame 32 having a groove or recess around the inner surface thereof in which the edges of a correspondingly shaped plate of glass 33 are received. As best illustrated in Fig. 6 the glass is mounted between suitable resilient gaskets 34 and is secured within the groovein the frame 32 by a removable strip or molding 36 attached by screws 31.

The frame 32 is substantially of the same size as the frame I1 and the two are provided with interfitting and overlapping edges as indicated at 38 in Fig. 6 which tend to prevent moisture from obtaining access to the inside of the frame IT. The upper horizontal portion 3| of the frame 32 is provided with properly curved edges indicated at 39 in Fig. 3 which permit the frame to be rotated outwardly on the pins 29 without interference by the ledge 21 or other adjacent'parts of the structure.

In order to provide means for suspending a motor 4| in a substantially central position within the frame H, the latter is provided with diametri cally opposed lugs 42 and 43 (see Fig. 2) to which theopposite extremities of a motor supporting yoke 44 are attached by screws 46'. For the purpose of illustration, the yoke 44 is constructed of two substantially identical sections 45 each having an overlapping semicircular portion 41, the opposite ends of which portions are secured together around the motor 4| by bolts 48. The motor 4| is so positioned within the yoke 44 that a fan 5| secured to a drive shaft 52 thereof is free to rotate in front of the yoke and in a region directly inside of the interfitting edges 38 of the frames l1 and 32.

The electrical current for the motor 4| is supplied by a pair of conductors 53 extending through an opening 54 formed longitudinally of one section of the yoke 44 and in one of which conductors a conventional snap action or toggle switch 56 is inserted. The switch 56, which is contained in a box or casing 51 provided at an upper corner of the frame IT, has an actuating lever 58, the end of which is movably confined within an opening 59 formed in an intermediate portion of a lever B I One end 62 of the lever 6| projects outwardly through a slot 63 formed in the rear of the casing 51 and there has a suitable operating cord 15 attached thereto while the opposite end thereof projects downwardly in parallel relation to a slot 64 formed in a removable plate 66 secured to the casing 51 by screws 61 and by which access may be had to the interior of the casing. Such front plate is provided with an inwardly projecting lug 68 having a screw 69 axially slidably disposed in a transverse opening therein. The lever 6| is se-. cured rigidly on the end of the screw 69 at a point slightly spaced laterally from the opening 59.

Between the lever 6| and the lug 68 is a small coil spring H which tends to urge the lever awayfrom the lug and against aside 01' the opening 63 in the casing 51. This side of the opening 63 is provided with a laterally disposed recess 12.

The position of the recess I2 with respect to the opening 63 is such that when the end.62 of the lever 6| is pulled downwardly the spring 1| will push the lever 5| into the slot when the lever reaches its downward limit of movement. .Such movement of the lever 6| also carries with it the lever 58 by which the switch 56 is actuated, to provide an electrical circuit through the. motor 4| when the lever assumes its lowest position.

As best shown in Fig. 3, the opposite or downwardly projecting end of the lever 62 is pivotally connected, as indicated at 16, to one end of a link 11, the opposite end of which is in turn connected by a pin 18 to an inside portion of the auxiliary window frame 32.

When the end 6| of the lever 62 is pressed downwardly to close the electrical circuit through the motor 4|, the opposite end of the lever and the link 11 move outwardly through the notch 64 and, in assuming a resultant and an approximately aligned relation, tend to elevate the frame 32 and the window 33 into the position indicated in dot and dash lines in Fig. 2.

When the window is thus opened and the motor 4| is energized as a result thereof, the fan 5| discharges a continuing blast of air outwardly through the frame II from a room in which ventilation is desired. Such blast of air keeps insects, dirt, etc. from entering a room through the frame I! without the necessity for the employment of screens and inasmuch as there are no obstructions in front of the fan 5| when the window 33 is elevated, it carries grease and moisture in suspension in the air in the room entirely from the building without engaging anything on which such particles might collect. It will also be observed that the fan 5| is located so far outside of the window glass l2 and is so protected by the motor and the motor bracket 44 that guards or cages normally employed for keeping window curtains and blinds out of contact with the fan are not required.

In operating the ventilating apparatus disclosed herein, it is necessary only to pull downwardly upon the cord 15 until the end 62 of the lever 6| slides into the notch 12. In such position the motor 4| will be energized and the frame 32 will be elevated into such position as to permit the air from the fan 5| to bedischarged from the room in which the window casing is employed.

In view of the'character of the switch 56, it will be apparent that it will not be moved to closed circuit position until the lever 5| and consequently the auxiliary window, has moved to substantially full open position.

When no further ventilation is required, the cord 75 is simply pulled in such way as to release the lever 62 from the notch 12 as a result of which the weight of the frame 32 will close the auxiliary window upon the frame l1 and the switch 56 will automatically be actuated to de-energize the motor 4|. In such position it will be apparent that the window is tightly closed against outside Weather and can be employed for the purpose of illuminating the interior of a room practically the same as though the window did not embrace such ventilating apparatus.

In the structure disclosed by Figs. '7 to 11 inclusive, the window ventilating apparatus is providedwith a slightly difierent form of device for controlling the operation thereof. In such structure, to which corresponding reference numerals heretofore applied are employed, a pair of springs 8| are provided with coil portions intermediate their ends which surround the extended threaded ends of the pins 29 and are retained thereon by nuts 82. One end of each of the springs 8| bears against the frame adjacent the opposite ends of the flange 2| projecting upwardly therefrom, while the opposite ends thereof bear against the inner side of the auxiliary frame 32 in regions between the upper and lower extremity thereof. The springs 8| are so constructed that when installed in this manner they tend to retain the auxiliary frame in its open position.

In the structure disclosed by these figures the casing 51 is of somewhat different shape from that employed in the structure disclosed by Figs. 1 to 6 and has projecting from a wall thereof adjacent the frame 32 a lug 83 on the outer end of whicha smallgrooved ratchet wheel 84 is ro-.

tatably mounted upon a ratchet shaft 86. A flexible chain 81 secured to the wheel 84 by a pin 88 extends within the groove in the wheel 84 around the side thereof adjacent the frame 32 and thence in the opposite direction around a portion of the grooved outer surface of a roller 89 which is pivotally mounted on a pin 9| projecting from the side of the casing 51. The chain then projects outwardly of the casing 51 through an aperture 92 formed in a lower portion thereof and is there available for the operation of the apparatus as will be hereinafter described.

One end of the ratchet shaft 86 is provided with a relatively non-rotatable radially extending -disc 93 in which is formed a pair of notches 94 and 96. A pawl 91, adapted to extend alternatively within one of these notches, is pivotally mounted upon the ratchet wheel by a screw 98 and is held resiliently in such operative position by a spring 99 engaging the pawl at one end and secured to the ratchet wheel at the other. Disposed around the ratchet shaft 86, upon the opposite side of the ratchet wheel 84 and between the latter and the boss 83, is a coil spring IOI having one of its ends attached to the ratchet wheel and the other to the boss. When the chain 81 is pulled downwardly, resulting in the rotation of the ratchet wheel 84, the coil spring IOI is compressed to a greater degree than before and returns the ratchet wheel to its original position when the pull on the chain 81 is released.

Secured rigidly upon the opposite end of the ratchet shaft 86 beyond the boss 83 is an arm I02 having a pin I03 at the outer extremity thereof on which is mounted a roller I04. A link I06 provided with a longitudinal opening or slot I08 therein, for receiving the roller I04, is pivoted by a bolt I09 to a lug III projecting outwardly from the wall of the casing 51 in a region somewhat above and to one side of the boss 83. Secured by a pin II2 to the outer end of the link I06 is an arm II3, the opposite end of which projects outwardly through an opening in the casing indicated at H and is secured by a screw II4 to one side of the auxiliary frame 32.

The arm I02 is so angularly disposed upon the ratchet shaft 86 that a line through the axis of the ratchet shaft and the roller I04 will be sub-. stantially perpendicular to the elongated slot I08 when the auxiliary frame 32 is closed.

When the chain 81 is pulled to open the window the pawl 91 engaging the slot 94 will rotate the arm I02 in the direction indicated by Fig. 11 and such rotation of the arm will swing the link I06 upon the pin I09 until the pin 88 supporting the chain 81 engages a pin II6 projecting outwardly from the casing 51. In such position the link I06 will have been depressed until a line between the aXis of the shaft 86 and the axis of the roller I04 will again be normal to the slot I08, although it will extend in an opposite direction relative to the slot. In such position of the parts the frame 32 will be elevated into its open position and will there remain even when the chain 81 is released by reason of the dead center position of the arm I02 relative to the link I06.

As soon as the chain 81 is released the spring IOI will rotate the ratchet wheel 84 in a direction opposite to that in which it was rotated by the chain and until the pawl 97 is engaged in the notch 96.

As soon as the pawl has assumed such position the auxiliary window may be closed against the compression of the springs 8| merely by again pulling upon the chain 81 and continuing the rotation of the arm I02 in the same direction as before and until it assumes the position illustrated by Fig. 9. In such position the auxiliary window cannot be opened from the outside because to do so would require the rotation of the link I06 upon the pin I09 directly against the normally disposed arm I02 and, therefore, the window is locked until such time as the chain 81 is again pulled from inside the window.

In having the auxiliary window close against the compression of the springs ill, the possibility of the breakage of glass is practically eliminated in view of the fact that with such springs the auxiliary window cannot be closed rapidly enough to cause a particularly violent engagement between the frames I1 and 32.

It is to be understood that a switch, such as that illustrated at 56, can be employed for controlling the operation of the motor in combination with the structure as disclosed by Figs. 7 to 11-, merely by attaching such switch to the link I06 in the same manner in which it is attached and operated in the structure illustrated in the preceding figures.

In the distribution to the public of the window structure disclosed herein, it is apparent that the ventilating apparatus can be sold either with or without the window I0. It may be sold directly to a householder, for example, in which event it is necessary only to out an aperture of proper shape in the pane of a Window already installed and then to secure the apparatus in such opening as hereinbefore described.

It may be desirable in some instances to sell the Window ventilating apparatus already in stalled in a pane of glass but not in a window frame. Under such circumstances the householder simply replaces an already installed pane of glass withone containing the ventilating apparatus.

While the window structure as herein disclosed constitutes a preferred form and application of the invention, it is to be understood that other structures differing widely from that herein disclosed are within the scope of the invention as defined by the appended claims.

I claim:

1. In combination, a window pane having an opening therein, a frame for said opening projecting outwardly beyond the plane of said pane, a closure for said opening at the outer extremity of said frame and movably associated therewith, a motor supported by said frame, a fan supported by said motor outwardly beyond the plane of said pane and with its outer edges approximately in the plane of the outer edges of said frame, whereby the centrifugal effect of the fan on the air enhances the efiiciency of the fan, and means for operating said closure.

2. Ventilating apparatus including a window sash provided with a pane of glass, said pane having an opening therein, a bar attached to said sash adjacent said opening, a frame for said opening supported from said bar, and a closure for said opening movably supported from said bar.

3. In combination with a ventilator having a movable closure, a support, a shaft rotatable in said support, a ratchet wheel fixed to said shaft, a crank fixed to said shaft, a pivoted arm having a slot therein slidably receiving the end of said crank, a link pivotally secured at opposite ends shaft engageable with said ratchet wheel to cause rotation of said shaft.

4. A ventilator structure including a frame having a closure member, means operable by a1- ternate successive movements in the same linear direction for alternately fully opening and fully closing said closure member, and spring means opposing closing movement of said member.

5. A room ventilating structure comprising, in combination, a window sash, a pane of glass supported by said sash, said pane having an opening therein extending to an edge thereof, a frame fixed relative to said pane and embracing the margins of said pane at said opening, means for principally supporting said frame from said sash, a closure for said opening pivotally mounted on said frame, an electric motor supported by said frame, a fan disposed within said frame and driveable by said motor, and a common means for controlling the position of said closure and the operation of said motor.

6. A window structure comprising a sash and a transparent panel therein, said panel having an opening therein the edges of which extend to said-sash, a frame for said opening embracing said panel about the margins of said opening amotor supported by said frame, a fan supported by said motor for driving movement therefrom, and means directly connecting said frame and said sash whereby to support the weight of said frame, motor and fan independently of said panel and materially relieving said panel of the vibratory efiects of said motor and fan in operation.

7. A window structure comprising a sash and a transparent panel therein, said panel having an opening therein the edges of which extend to said sash, a frame for said opening having a marginal channel for reception of said panel about the margins of said opening, vibration insulating means interposed between said panel and the walls of said channel sealing the space between said panel and said channel, a motor supported by said frame, a fan supported by said motor for driving movement therefrom, and means directly connecting said frame and said sash whereby to support the weight of said frame,

motor and fan independently of said panel and materially relieving said panel of the vibratory effects of said motor and fan in operation.

8. In a ventilating mechanism, in combination, a frame having an opening therein, a closure for said opening pivotally supported on said frame, a. crank, means for operating said crank in one direction of rotation only, a pivoted link having a slot therein, said crank being engaged in said slot whereby to oscillate said link upon rotation of said crank, and a second link connecting the first mentioned link to said closure, said crank and links being so constructed and arranged that said closure is moved from fully closed to fully opened position upon rotation of said crank through less than 180 degrees of angular movement and is moved from fully open to fully closed position only upon rotation of said crank through more than 180 degrees of angular movement.

9. A room ventilating structure comprising, in combination, a window sash, a pane of glass supported by said sash, said pane having an opening therein extending to an edge thereof, a. frame fixed relative to said pane and enclosing the margins of said pane around said opening, means for securing said frame directly to said sash for support therefrom, a closure for said opening including a frame movably mounted on the first mentioned frame and a similarly shaped sheet of glass movable therewith embraced marginally by said closure frame, and means for operating of said closure.

10. In a ventilating structure, in combination, a window sash, a pane of glass supported thereby, said pane having a portion cut away from a horizontally extending edge thereof at a. location spaced from the vertically extending edges thereof to form an opening therein, a frame for said opening supported directly from the adjacent portion of said sash, and 'a motor driven fan supported by said frame in co-operative relation with respect to said opening. v

ALLEN McLAUGHLIN.

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