US 2198488 A
Description (OCR text may contain errors)
April 23, 1940. H, F, SMITH ELECTRICAL APPARATUS Original Filed May 26, 1934 4 Sheets-Sheet 1 IN VENT OR.
///6' ATTORNEYS l I l l I l IIIIJ April 23, 1940. sMlTH 2,198,488
ELECTRICAL APPARATUS Original Filed May 26, 1934 4 Sheets-Sheet 2 INVENTOR.
April 23, 1940. s rrH 2,198,488
ELECTRICAL APPARATUS Original Filed May 26, 1934 4 Sheets-Sheet 5 HHHHHHHH \HH l/Le 1N VENTOR.
///S ATTORNEYS April 23, 1940. rr 2,198,488
ELECTRICAL APPARATUS Original, Filed May 26, 1934 4 Sheets-Sheet 4 am s.
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Patented Apr. 23, 1940 PATENT OFFICE mnc'mrcar. Arrm'ros Harry F. Smith, Dayton, Ohio, assignor to Gen-- eral Motors Corporation, Dayton,
poration of Delaware Original application May 26, 1934,
Ohio, a cor- Serial No.
727,774. Divided and this application January 21, 1937, Serial No.
This invention relates to electrical apparatus and more particularly to the actuation of awnings, shades or other light transmission modifiers or closures for window or door openings automatically and manually.
This application is a division of my co-pendv ing application, Serial No. 727,774, which was filed on May 26, 1934.
An object of this invention is to provide control devices for the fixtures associated with the windows, doors or other openings of edifices in such a manner that they may be controlled with but slight manual effort or automatically in accordance with various environmental conditions.
Further objects and advantages of themesent invention will be apparent from the following description, reference being had to the accompanying drawings wherein a preferred form of the present invention is clearly shown.
In the drawings:
Fig. 1 is a diagrammatic representation, partly in section and partly in perspective, of a portion of an edifice embodying features of my invention;
Fig. 2 is an elevation of the motor drive for the window closure device;
Fig. 3 is a plan view of a portion of Fig. 2;
Fig. 4.- is an enlarged view of a portion of Fig. 2 showing the controls in the stopped position;
Fig. 5 is a wiring diagram of the window closure control;
Fig. 6 is a plan view, with the protective screen removed, of the rain responsive device;
Fig. 7 is an elevation, with the protective screen added, of the device shown in Fig. 6;
Fig. 8 is a cross sectional view taken along the line 8-8 of Fig. 7, and
Fig. 9 is a cross sectional view of a piece of wood indicating how the rain responsive reed may be cut therefrom.
My invention is particularly applicable to an edifice such as a house, cfiice building or the like, which is provided with one or more openings or windows of the character shown in Fig. l, which is representative of a plurality of such openings or windows throughout the edifice. This window, door or the like is provided with one or more sash openings ill, each having a closure ii in the form of a window sash or the like and an awning, shade or light transmission modifier it which may overhang one or more of the sash openings Won the outside of the building. Actuating means and control means, hereafter more fully described, are provided for actuating the closures H and modifiers l2, not only under manual control, but also automatically in accordance with selected environmental conditions.
The actuation of the awning, shade or light transmission modifier i2 now will be more fully described. The awning l2 which is pivotally secured to the building in the usual manner, may be raised or lowered by means of a cable I3 passing over a pulley l4 and attached to the lower or outer end of the awning at l5. This cable passes over a pulley l6 and winds around the drum ll which is actuated by the motor l8 under a manual control at is and 20 and under an automatic environmental control 2|. The awning is so controlled that it automatically raises, for example, when the sunlight diminishes below a certain intensity and automatically lowers when the sunlight increases above a certain intensity. This is accomplished by providing a photoelectric cell 22 whichis responsive to such sunlight intensities, and which initiates impulses which are relayed eventually to the one or more motors It to actuate properly the awning or awnings I2. The electrical impulses initiated at the cell 22 flow to a current intensifying aggregate 23 from whence the current thus intensified flows to a master switch structure 24 which relays a governing current to the various individual relays 25, placed throughout the edifice, for each window of the edifice. Each relay 2:: controls the flow of standard or city power current to its individual motor is.
The actuation and controls for the closure member or members ii is shown more in detail in Figs. 2'to 9 inclusive. A series of manually actuatable switches ltd, ms and 502 are provided which, by the proper energization of the relay we, energize or deenergize the motor id i which in turn actuates the closure member M. The motor iiii is so related with respect to the relay Hid that the current to the motor 5% is ,cut oil whenever the closure member it reaches its full closed position or full open position. in addidii that it closes the closure member II and prevents rain from blowing into the edifice.
Another control is superimposed on the circuits responsive to positions of the screen Ill. The arrangement is such that if the screen I should be raised or should fly up under its own tension by being released, the switch I01 is opened and the flow of current to the motor I04 is stopped and cannot be resumed until the screen is lowered.
The foregoing results may be accomplished by a wiring arrangement more fully shown in Fig. 5. When the switch I00 is closed, the closure II is caused to close because current flows. from the battery I08 through the switch I00 to the relay solenoid I09. The energization of the solenoid I09 moves the contact arm IIO to the right, thus closing the contacts II I to I I4. This permits flow of current from the power source II to fiow through the motor I04 in the proper direction to close the closure member II through the gear train hereinafter more fully described. If it is desired to open the window, the switch I02 is closed and this causes current to flow from the battery I08 to the relay solenoid I I6. This moves the arm IIO to the left, thus closing the contacts I I1 to I and permits the fiow of current to the motor I04 in the proper manner to open the window. The relay I03 is provided with two locking arms I2I and I22 which, under the tension of springs I2Ia and I22a respectively tend to lock the contact arm H0 in its closed position either on the right or on the left. Once the contact arm H0 is moved to a closed position, one of these locking arms I2I or I22 holds the arm IIO closed until the locking arms are tripped either by the action of the motor I04 itself or by the energization of the solenoid I23.
The motor I04 is mounted on a platform I24 which swings about a fulcrum I25 made in the form of rubber supports. The motor I04 drives a shaft I26, also carried on platform I24, through gears I21, the shaft I20 in turn actuating a belt I28 leading to a shaft I29 which is geared to one of the closures II. The shaft I29 may be linked by chain I 29a. to other similar shafts to operate the other sashes of the window. When movement of the closure II is resisted, either because the closure member reaches its full open or full closed positions or because of some other abnormal re sistance, a tension is placed on the belt I20 so that the platform I24 is lifted about fulcrum I25 from its position in Fig. 2 to the position shown in Fig. 4. When this occurs, the abutment I30 carried by the shaft bearing I26a hits the trip link I3I which in turn actuates the trip levers I2I and I22 and permits the arm H0 to assume its neutral position, thus stopping the motor I04.
The motor I04 may be stopped under manual control by closing the switch IOI. When this switch is closed, the solenoid structure I23 is energized which in turn attracts the armature I32 carried by trip link I3I. Armature I32 in turn actuates the trip link I3l to trip the levers |2I and I22 and open the circuit to motor I04.
The control from the screen I06 is as follows: When the screen rises, the switch I01 is opened. This stops flow of current from the transformer I33 to the solenoid I34. When the solenoid I34 is de-energized, the switch I35 is opened and thus current cannot flow to the motor I04. This stops the closure member I I wherever it may be.
The rain or other weather condition control I05 is superimposed into the electric current circult as follows: A moisture responsive reed I bends downward when it is moistened, thus closing contacts I. When this occurs, current fiows to the solenoid I", thus energizing the motor I04, as heretofore described, and closing the window. In addition, there is a rod I42 placed in the path of the window closure II which opens the contacts I43 when the window reaches its full closed position. This prevents continuous flow of current through the solenoid I09 after the window has been closed and while the reed I04 is still wet. The rain responsive device conveniently may be mounted on an insulated platform I44 provided with plugs I45 and I45a which may be plugged into receptacles on the window sill and wired into the control system. The reed I40 normally, when dry, holds up the metal contact arm I46, but when it is wet, it lowers and permits the contact arm I46 to lower towards contact arm I41, thus closing contacts I4I. The contact arm I46 connects by the U-shaped extension I40 with plug I45. The platform I44 is provided on one of its sides with a metal member I49 which is in electrical contact with the contact arm I41 and by a longitudinal extension I49a carries one of the contact members I43 and which is actuated by the rod I42 heretofore described. One of the contacts I43 is electrically connected to the plug I45a. A protective screen I051: may be placed over the platform I44.
The reed I40 may be made of any material which is sensitive to moisture. At present I prefer to make it of a thin wood strip cut with respect to the grain of the wood as indicated at M or I40b in Fig. 9. The grain therefore runs substantially parallel with the thickness of the reed.
Sometimes it is desirable to cause the awnings to stay down regardless of the sunlight intensity. One way of accomplishing this is to provide a lantern I50 which shines. into cell 22 with sufficient intensity to lower the awnings. This lantern may be controlled from a switch I5I which has "on and off buttons for lighting and darkening the lantern I50, as will be readily apparent.
While the form of embodiment of the inven tion as herein disclosed constitutes a preferred form, it is to be understood that other forms might be adopted, all coming within the scope of the claims which follow.
What is claimed is as follows:
1. In combination, an edifice having an opening in said edifice, a closure for said opening, a screen for said opening, means to move said closure, means to actuate said last named means in accordance with atmospheric conditions, and means controlled by said screen rendering one of said above named means inoperative.
2. In combination, an edifice having an opening in said edifice, a closure for said opening, a screen for said opening, means for manually controlling said closure, means for additionally controlling said closure in accordance with psychrometric conditions, and means controlled by said screen rendering one of said above named means inoperative.
means under abnormal resistance to the actuation of said closure, and means controlled by said screen rendering one of said means inoperative.
4. In combination with an edifice having an opening, closure members for said opening, a motor for operating one of said closure members, a control circuit for said motor, a switch in said circuit, first solenoid means for operating said switch including a manually operated member for closing the circuit to said solenoid, second solenoid means for operating said switch including a member operated by one of said closure members for controlling the energization of said second named solenoid, and a third means for mechanically operating said switch including a member responsive to the load on said motor.
5. In combination with an edifice having an opening, a closure member for said opening, a motor for opening and closing said closure member, a yieldable mounting for said motor, a control circuit for said motor, a switch in said circuit, means responsive to atmospheric conditions for operating said switch so as to initiate operation of said motor, means responsive to movement of said mounting for operating said switch,
' and means responsive to the load on said motor for actuating'said mounting.
means responsive to the position of said screen for controlling one or the above named means.
8. In combination, an edifice having an opening in one wall thereof, a closure for said opening, a screen for said opening, means to movesaid closure, means to actuate said last named means in accordance with atmospheric conditions, means operated by said screen controlling one of the above named means, and means for stopping said closure actuating means in response to abnormal resistance to movement of said closure member.
HARRY F. SMITH.