US1120685A - Metal fly-screen. - Google Patents

Description

B. T. BURROWES.

METAL FLY SCREEN.

APPLICATION FILED SEPT.28, 191s.

Patented Dec. 15, 1914.

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EDWARD T. IBURROWES, OF PORTLAND, MAINE.

METAL FLY-SCREEN.

Application filed September 23, 1913. Serial No. 791,339.

To all whom it may concern Be it known that I, EDWARD T. BUR- nowrs, citizen of the United States, residing at Portland, in the county of Cumberland and State of Maine, have invented certain new and useful Improvements in Metal F ly-Screens, of which the following is a specification.

This invention relates to metal fly screens, and more particularly to means for holding such screens in position in a window frame.

As heretofore constructed, metal screens of the type in question have usually been arranged to slide in metal channel-shaped guide-ways secured to the inside of a window frame, while wooden frame screens are usually provided with a groove adapted to take over a guide-rail secured to the window frame. As theuse of a wooden guiderail of this kind presents advantages over the use of a metal channel, it is one object of the present invention to provide an al metal screen so constructed as to cooperate with the usual wooden guide-rail.

A further object of the invention is to PI'OVifiG guiding means for a screen which will make it possible to adjust the screen to windows of slightly different widths, or to windows the frames of which are not accurately square.

In order that the invention may be understood, reference is had to the accompanying drawing, forming a part of this specification, and in which, Figure 1 is an elevation of a metal fly screen constructed in accordance with my invention, parts being broken away; Fig. 2 is a horizontal section through the same, also showing a guide-rail cooperating therewith; Fig. 3 is a transverse section through one side of a screen, showing a sli htly modified arrangement; Fig. 4 is a similar view, showing a still further modification; Fig. 5 is a fragmentary longitudinal section through one of my improved guide-ways; Fig. 6 is a transverse section through a metal *uiderail which I may employ; and, Fig. I is a transverse section through one side of a screen frame, showing a construction which may be employed in place of that illustrated in Figs. 1 and 9.

Referring to the drawing in detail, 1 designates a metal screen frame, which may be of any suitable construction, but which is shown as of the type illustrated in the copending application of George H. Davis, Serial No. 787,694, filed Sept. 2, 1913.

2 designates a wire holding molding of the kind shown in such application, while 3 deslgnates my improved molding which forms one of the features of the present invention. As clearly shown in Fig. 2, this molding, after passing around the screen frame, is bent backwardly upon itself, as indicated at 5, so as to form a guide-way or channel at. The ends of the bent back portlon 5 are prolonged beyond the molding proper, as indicated at 5 in Fig. 1, so as to extend the entire height of the frame. This channel L, it will be seen, lies at one side of the plane of the screen, and is adapted to engage a guide-rail 6, which may be secured to the window frame by means of nails or similar fastenings. In the channel 4 is located one or more leaf springs 7, as clearly shown in Fig. 5, one end of such springs being securedto the bottom of the channel, as by means of a rivet 8. These springs are similar to those commonly used in connection with wooden frame screens and are for the same purpose, namely, to maintain the opposite edge of the screen in engagement with the guiding means.

At the side of the screen opposite the molding 3 and channel 4: is the guiding means which I prefer to employ, comprising a strip 9 extending substantially throughout the length of the screen. This strip is located at one side of the screen and is preferably secured thereto by means of screws or similar fastenings 10, working in transverse slots 11, formed near each end of the strip. By means of these slots it will be seen that the position of the strip relative to the frame can be adjusted, and the extent to which the strip projects beyond the frame regulated. By this means it is quite possible to adapt any given screen to windows of slightly varying widths and in case the window frame should be slightly wider at one place than another, the strip 9 can be adjusted so as to project somewhat farther at one end than at the other. In this way, a tight fit can always be secured and all cracks or openings eliminated, especially at the bottom of the screen on the window sill.

The outer edge of the strip 9 is adapted to work in a groove formed in a guide-rail 12, preferably made of wood. As indicated in Fig. 6, however, a guide-rail 13 may be employed for this purpose, such rail being formed of sheet metal folded upon itself at separated points, 1%15, so as to form a channel or groove 16 for the reception of the strip 9.

While the construction shown at the left of Fig. 2 possesses many advantages, I may, in some cases, provide this side of the screen with guiding means of the same nature as that with which the opposite side. is equipped. By reference to Fig. 7, it'will be seen that I may attach a channel-shaped guide member 18 to the frame and provide a guide-rail 19, with which such guidemember may engage. It will, of course, be understood that the channel'shaped member 18 is of considerably less depth than the channel 4, at the opposite side of the screen, such arrangement being well known in the wooden screens now in common use. The purpose of this is to permit the screen to be pressed toward the right, compressing spring 7 until channel 18 clears the rail 19, when the screen may be readily removed.

Instead of forming the channel 4 integral with the molding 3, I may provide the usual molding 3, as illustrated in Fig. 3, and secure thereto, as by rivets, a separate channel-shaped member 17 which, of course, eX- tends the entire height of the screen.

In Fig. 4, I have illustrated a molding 3", adapted to embrace a rabbeted frame 1' of the kind shown in the Davis application above mentioned, and bent backward upon itself at 5 to form a channel-shaped guide-Way 1. It will, of course, be understood that the guide-Way may be of a depth equal to the Width of the frame, as shown in Fig. 4, or it may be of less depth as illustrated in Fig. 2. In other words, the molding may be bent back upon itself at any Copies of this patent maybe obtained for five cents each, by addressing the suitable point whatever, so as to form a channel of any desired depth.

It will therefore be seen that I have provided simple and inexpensive means for guiding metal frame screens in the same manner as Wooden frame screens, and further, that I have provided means for adjusting a rigid frame screen so as to fit Windows of slightly varying idths, and it is tho'ughtthat the many advantages of these features will be readily appreciated without further discussion.

WVhat I claim is: I

1. In a fly screen, a rigid frame, a wire holding molding embracing said frame, and a channel-shaped guide-way carried by said molding, the walls of the channel being parallel with the adjacent face of the mold- -ing, and. the channel opening outwardly.

' 2. In a fly screen, a rigid frame comprlsing sidebars, and a wire holding molding embracing one of said side bars, the edge of such molding being bent back parallel with itself at one side of the frame to form an outwardly opening channel-shaped guide- Way.

3. In a fly screen, a rigid frame, a guide channel secured to the side of theframe ad jacent one edge, the walls of the channel lying parallel with such frame, and an adjustable guide strip secured to the side of the frame adjacent the opposite edge, and projecting therebeyond in a parallel plane. In testimony whereof I have afi'ixed my signature, in presence of two witnesses.

EDWARD T. BURROWES.

Witnesses: IDA F. MCNAIRN, ALICE M. GURNEY.

Commissioner of Yatents,

Washington, D. G.

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