US1074917A - Fly-fan. - Google Patents

Description

J. W. WILLIAMS.

FLY FAN.

APPLIOATION FILED MAY 22, 1912. RENEWED MAR. 27, 1913.

1 (1974,9 1 7 Patented Oct. 7, 1913.

111/ Mlliam? l/vvwmoous UNTTED STATES PATENT OFFICE.

JOHN W. WILLIAMS, OF DIXON, TEXAS.

FLY-FAN.

Application filed May 22, 1912, Serial No. 699,024. Renewed March 2'7, 1913.

To all whom it may concern Be it known that 1, JOHN W. WILLIAMS, a citizen of the United States, residing at Dixon, in the county of Hunt, State of Texas, have invented certain new and useful Improvements in Fly-Fans; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in fly fans.

The principal object of the invention is to provide a fly fan which is adapted for use in connection with screen doors whereby during the opening and closing of the door the fan will be operated in a direction to direct a current of air outwardly and therelply act as a barrier against the ingress of Another object of the invention is to provide a fan of the character described which is provided with means whereby the fan may be actuated by a person within a room previous to the opening of a door.

A further object of the invention is to provide a fly fan for the purpose described which is extremely simple in construction, it being composed of a minimum number of parts, and is cheap to manufacture.

\Vith these and other objects in View, the invention consists in the construction. and novel combination of parts hereinafter fully described, illustrated in the accompanying drawing and pointed out in the claims hereto appended; it being understood that various changes in the form, proportion, size and minor details of construction within the scope of the claims may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawing: Figure 1 is a front elevation of a screen door showing the application of my invention, the door being shown closed, Fig. 2 is an elevation of the inner side of the door showing the fan-actuating cord connected with the door to permit of the fan being actuated previous to the opening of said door. Fig. 3 is a horizontal sectional view taken on the line 3-3 of Fig. 1, and Fig. 4: is an enlarged detail sectional view through the fan and its supporting bracket.

Like reference numerals designate corre- Specification of Letters Patent.

Patented Dot. 2', 1913.

Serial No. 757,257.

sponding parts in all the figures of the drawing.

Referring to the drawing, A designates the casing of a screen door B, which door is connected to the casing by means of hinges 55. Secured to the casing A adjacent the upper end of the outer edge of the door B, is a fan-supporting bracket which is desig nated as a whole by the reference letter C. This bracket includes a spindle 6 which has a threaded outer end 7 and a lateral flange 8 formed on its inner end. Extending from the flange 8 is a plurality of radial feet 9 which are attached to the casing A by screws or other suitable fastening means, the spindle 7 being disposed in a horizontal plane. Rotatably mounted upon the spindle 7 is a fan D. This fan includes a hub 10 from which project a plurality of blades 11. Extending inwardly from the hub is a pulley 19 which abuts the stop or flange 8 above described. Disposed between the hub 10 around the spindle 6 is a series of anti-friction bearing rollers 13. Disposed against the outer face of the hub 10 around the spindle 6 is a washer 14, and associated with the threaded end 7 of said spindle and bearing against the washer is a nut 15.

In order to actuate the fan D upon opening or closing of the door, or manually previous to the opening of the door by a person inside the room, an operating cord 16 is connected at one end to a staple 17 which is centrally secured to the inner face of the door adjacent the inner edge thereof. This cord extends transversely across the inner face of the door to the outer edge thereof, and is then trained over a pulley 18. The free end of the cord thence extends upwardly along the inner face of the outer edge of the door and thence passes out through a transverse opening 19 formed in the upper outer edge of said door. The cord is then trained over a roller 20 secured to the door intermediate the opening 19 and the fan. Secured to the door casing intermediate the door and the fan is a roller 21, the opening 19, rollers 20 and 21 and the pulley 12 of the fan being all disposed in alinement. The outer end of the cord 16 is trained under the roller 21 and is wrapped one or more times around the pulley 12 of the fan, the free end of the cord normally extending below the hub and carries a weight 22.

scend to its normal posit-ion and at the same time actuate the fan D, as will be readily understood. Should a person on the inside desire to actuatethe fan D previous to the opening of the door, that portion of the cord 16 between the opening 19 and the staple 17 may be manually operated, thereby creating a sutficient current of air to cause the flies to move away from the door. As soon as the cord is released by the operator, the weight will drop bygravity to its normal position.

What is claimed is:

1. In a fly fan, the combination with a swinging door and its casing, of a fan including a drum supported on the casing for rotation, a roller carried by the outer face of the door and disposed adjacent the outer edge thereof, a roller carried by the casing and disposed intermediate the first mentioned roller and the hub, an operating cord an opening, of a fan including a drum supported on the casing for rotation; a roller carried by the door and disposed intermediate the opening thereof and the fan, a roller carried by the casing and disposed intermediate the drum and the first mentioned roller, an operating cord wrapped around the drum and having one end trained under the second mentioned roller and over the first mentioned roller, the cord thence extending through the opening of the door and having its end connected to the inner face of the door in spaced relation to the opening, and a weight carried by the other end of the cord.

In testimony whereof, I aifix my signature, in presence of two witnesses.

JOHN IV. WILLIAMS.

WVitnesses:

WV. H. CAMP, ALTHEA J ONES.

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

Washington, D. C.

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