US998794A - Screen-door fly-fan. - Google Patents

Description

J. A. PAINTER.

SCREEN DOOR FLY FAN.

APPLICATION FILED SEPT. 1, 1910.

998,794. Patented July 25, 1911.

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J. A. PAINTER.

SCREEN DOOR FLY FAN. APPLICATION FILED SEPT. 1, 1910.

Patented July 25, 1911.

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coLUMBlA PLANOORAPH 00., WASHINGTON. n. c.

FICE.

JACOB A. PAINTER, OF OKLAHOMA, OKLAHOMA, ASSIGNOR OF ONE-HALF T0 LEON SMITH, OF OKLAHOMA, OKLAHOMA.

SCREEN-D 0 OR FLY-FAN.

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Specification of Letters Patent.

Patented July 25, 1911.

Application filed September 1, 1910. Serial No. 579,981.

To all whom it may concern:

Be it known that I, JAooB A. PAINTER, a citizen of the United States, residing at Oklahoma, in the county of Oklahoma and State of Oklahoma, have invented certain new and useful Improvements in Screen- Door Fly-Fans; and I do declare the follow ing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertalns to make and use the same.

This invention relates to improvements in screen door fly fans.

One object of the invention is to provide an improved construction of fly fan for screen or other doors adapted to be operated by the opening and closing movement of the door and which is arranged in such a position that the same will not interfere in any way with the passing in and out through the door way.

Another object is to provide a fly fan having an operating spring adapted to be wound up by the opening movement of the door to which the fan is applied and which is so connected with the door thatthe pressure thereof will close the door when released thus obviating the necessity of providing a separate door closing spring.

A further object is to provide a guard whereby the door may be opened to a sufficient extent for starting the fan without admitting flies.

With the foregoing and other objects in view, the invention consists of certain novel features of construction, combination and arrangement of parts as will be more fully described and particularly pointed out in the appended claims.

In the accompanying drawings; Figure 1 is a front elevation of a screen door and a portion of a building illustrating the application of the invention, the door being shown in closed position; Fig. 2 is a similar view showing the door in open position; Fig. 3 is a horizontal sectional view on the line 33 of Fig. 1; Fig. 4 is a detail vertical section of the upper end of the fan shaft; and, Fig. 5 is a similar view of the lower end of the shaft.

Referring more particularly to the drawings, 1 denotes a screen door which is hinged at its rear edge to the door casing 2 by any suitable form of hinges. On the side of the building adjacent to the opening or free edge of the door is arranged a series of laterally extending substantially V-shaped bearing brackets 3, in the apices of which is revolubly mounted a vertically disposed fan supporting shaft 4;. Arranged on the shaft 4 are upper and lower fan sections 5 each of which comprises upper and lower cross arms or bars 6 which are preferably formed of metal and have cut in their central portions, pairs of slits 7 through which the shaft is passed, the material adjacent to the slits being bent outwardly in opposite directions to permit the passage of the shaft through the slits after which the arms or bars 6 are secured in place by notches or other suitable fastening devices. The outer ends of the arms or bars 6 are connected together by vertical strips 8 of fabric or other suitable material, said strips being secured to oppo site faces of the bar 6 at each end thereof thus forming the blades of the fan as shown in Figs. 2 and 3.

In the lower end of the shaft 4 is formed a socket 9 in which is arranged a coiled spring 10. The inner end of the spring 10 is secured to the shaft within the socket 9 while the outer end of the spring is secured to a short winding shaft 11 having a squared lower end which engages or sets in a squared aperture formed in the floor or in a suitable supporting bracket 12 which corresponds with the brackets 3. Fixedly mounted on the shaft 4 near its upper end is a cord winding pulley 13 upon which is adapted to be wound and unwound a fan operating cord 14, the outer end of which is secured to a connecting bracket 15 secured to the door adjacent to its upper end and projecting above the same as shown. Above the pulley 13 is arranged a fly wheel 16 whereby the momentum from the revolving of the shaft when the door is opened, will be sufficient to continue the operation of the fan after the door has been opened to a sufficient extent to permit a person to pass through the door way. By thus continuing the operation of the fan any flies attempting to enter the door, while thus open, will be frightened away.

Secured to the door frame adjacent to the free edge of the door is an outwardly projecting guard strip 17, saidstrip being of sufficient width to close the space formed when the door has been opened to a slight extent sufficient to cause the fan to make several revolutions thus driving away any flies in the proximity of the door.

From the foregoing description taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood without requiring amore extended explanation.

Various changes in the form, proportion and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of the invention as defined in the appended claims.

Having thus described my invention, what I claim is:

1. A fly fan for doors comprising a revolubly mounted shaft, fans operatively mounted on said shaft and comprising upper and lower cross bars connected together at their opposite ends by vertically disposed strips, said cross bars being provided with transversely spaced longitudinally extending slits, with the material adjacent said slits bent outwardly in opposite directions to provide shaft receiving apertures, means connected with said shaft and door and operable by the opening and closing of the door for revolving the shaft and fans in one direct-ion, and means to revolve said shaft in the opposite direction and to simultaneously close said door.

2. A fly fan for doors comprising a revolubly mounted shaft, fans operatively mounted on said shaft and comprising upper and lower cross bars connected together at their ends on opposite faces thereof by vertically disposed laterally spaced fabric stripsforming the blades of the fan, means operable by the opening and closing of the door for revolving said fan shaft, and a guard arranged on the door frame adjacent the open edge of the door to obstruct the entrance of flies at the beginning of the opening of the door and starting of the fan.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JACOB A. PAINTER.

Vitnesses:

C. F. COFFMAN, W. S. BOYAOK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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