US 1410487 A
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Description (OCR text may contain errors)
APPLICATION FILED APR. 5, 1920.
Patented Mar. 21, 1922.
ELONZO CLARENCE MCCARTY, 0F STOCKTON, CALIFORNIA.
Application filed April 5,
To all whom it may concern:
Be it known that I, ELONZO C. MoCAR'rY, a citizen of the United States, residing at Stockton, in the county of San Joaquin, State of California, have invented certain new and useful Improvements in Windows; and I do declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, and 'to the characters of reference marked thereon, which form a part of this application.
This invention relates .to improvements in windows, and particularly to those employed on street cars, and through which the motorman looks; to those employed for motor car windshield purposes, to show-windows, also to locomotive-cab windows and the like, and in fact to all windows where it is essential or desirable that moisture, fog
' and any obscuring of the vision due to atmospheric conditions or the action of the elements thereon, shall be prevented, so that the window will at all times present a clean and easily seen-through appearance.
To accomplish my objects I employ a double window structure, with a means between the panes for preventing any accumulation of moisture or fog, and a means operating on the outside of the outer pane to continually wipe the same clean of any rain or dirt that may light thereon.
A further object of the invention is to produce a simple and inexpenslve device, and
yet one which will be exceedingly effective for the purposes for which it is designed.
These objects I accomplish by means of such a structure and relative arrangement of parts as will fully appear by a perusal of the following specification and claims.
In the drawings similar characters of reference indicate corresponding parts in the several views.
Fig. 1 is a rear end View of my improved window, partly broken out in places to show certain features of construction.
Fig. Q'is a; vertical section through the window.
Fig. 3 is an enlarged fragmentary section of the upper and forward side of the window.
Fig. 4: is an enlarged fragmentary view showing the disposition of the heating elements between the panes.
Referring now more particularly to the characters of reference on the drawings, the
Specification of Letters Patent.
Patented Mar. 21, 1922..
1920. Serial No. 371,500.
numeral 1 denotes a suitable frame having an interior pane 2 set therein and held by strips 3.
An exterior pane 4 is set in the frame at a suitable spaced distance from the pane 2, and is held in position by the inner edge 5 of a metal housing 6, which is channel or trough shaped in cross section, the open sides of said housing facing each other.
Between the panes 2 and 4, the frame 1 is provided with a longitudinal bore or cavity 7 extending the entire distance therearound, which bore has holes 8 at certain intervals to allow air communication between said bore and the interior space between the panes. Air passages 9 are drilled into the bore at certain intervals from the outside of the casing, terminating inside the housing 6.
In the bore 7 are continuous resistance wires 10, connected to any suitable source of electrical energy. These wires are bare for the major portion of their length, and for the remainder are covered with insulation and heat resisting material as shown at 11, so that the wires will be held in spaced relation from each other and from the walls of the frame.
By means of these wires, which act as heating elements when the current is turned on, the air space between the panes is constantly maintained in a warm and dry state, effectually preventing the accumulation of moisture or fog on the interior surface of the panes.
To prevent rain water from lying on the outer surface of the outer pane 4, which streaks the Window and invites dirt to gather thereon and obstructs a clear vision therethrough, I provide sprocket wheels 12 mounted transversely of the frame in alinement in the upper and lower ends of the housing 6 beyond the plane of the window panes, around which pass vertical endless chains 13.
One of the lower ones of said sprockets is connected in driving relation with a small electric motor 14, by means of a chain or gear drive, as shown at 15.
Each corresponding pair of sprocket wheels is mounted on a common shaft 16, so that with the driving of one sprocket, the chains both move therearound without strain or binding.
Secured to the chains at spaced intervals in the length thereof and extending horizon u tally from one chain to the other are cleaning strips 17 of rubber or Whatever material is best adapted for the purpose.
hese cleaning members are positively caused to bear against the surface of the glass for the full height thereof by means of pins 18 projecting from the ends of the members 17 strips 19 fixed in the housing 6 on each side. These guides are only on the side of the chain adjacent the pane, terminating adjacent the sprocket Wheels, since on the upward travel of the cleaning members on the' side of the chain away from the pane, the
or the exact positioning of the cleaning members is of no consequence.
Drain holes 20 are side of the housing 6, to drain off any water Washed down from the pane by the cleaning members.
Either the current for the wires 10 or the motor 14 may be shut off when conditions render their use no longer necessary.
In order that the cleaning bars or strips 17 may be concealed in the housing 6 when not in use, I preferably employ only two such bars, positioned half the length of the chains apart.
From the foregoing description it will be readily seen that I have produced such a device as substantially fulfills the object of the invention as set forth herein.
ile this specification sets forth in depresent and preferred construction of the device still in practice such deviations.-
which slide in grooved guide provided in the lower from such detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claims.
Having thus described my invention what claim as new and useful and desire to se cure by Letters Patent is window structure comprising in combination with a pair of spaced panes and a means for keeping the inner and adjacent faces of the panes in a dry condition, power driven wiping members on the outside of the window and arranged to continuously traverse the surface of the outer pane.
2. A window structure comprising in combination with a pair of spaced panes and a means for keeping the inner and adjacent faces of the panes in a dry condition, power driven endless chains arranged on each side of the outside of 3. A window structure comprising in combination with a pair of spaced panes and a means for keeping the inner and adjacent faces of the panes in a dry condition, power driven endless chains arranged on each side of the outside of the window, wiping therebetween, ing said wipers to bear against the outer pane while traversing the same with the movement of the chains.
In testimony whereof I afiix my signature.
ELONZO CLARENCE McCARTY.