US875826A

US875826A - Window-screen.

Info

Publication number: US875826A
Application number: US40319007A
Authority: US
Inventors: Charles H Knowles
Original assignee: Individual
Current assignee: Individual
Priority date: 1907-11-21
Filing date: 1907-11-21
Publication date: 1908-01-07
Anticipated expiration: 1925-01-07

Description

No. 875,826. I PATENTED JAN. 7, 1908.

' G. H. KNOWLES.

WINDOW SOREEN..

urmpnmn mum JULY 13. 1000. nnnnwnp nov. 21, 1907.

4 WWW wm e UNITED STATES PATENT OFFICE.

CHARLES H. KNOWLES, OF FAIRFIELD, MAINE.

WINDOW-SCREEN.

To all whom it may concern:

Be it known that I, CHARLES H. KNowLEs, a citizen of'the United States of America, and resident of Fairfield, Maine, have invented certain new and useful Improvements in VVindow-Screens, of which the following is a specification.

My invention relates to a window screen l such as are used for excluding flies, and

order to fit particularly, windows because I there is little latitude for variation as they are generally constructed, to allow for differences in the casing of windows supposed to be. of the same size.

The object of my invention is to make a screen which will have sufficient lateral expansibility to fit all windows having the same sized glass, which may be applied quickly and easily from the inside and without the necessity of nailing strips to the casing and which may be raised and lowered sufiiciently for all practical purposes.

In carrying out these objects I make a screen in theusual way with end and side bars, one of the side bars having cooperating with it a laterally movable extension bar forced outward by springs and held to the side bar with suitable guides. The screen is held in lace immediately outside of the up er sas against outward displacement by ho ding plates which are a plied to the inner faces of the side bars and extend outward into the groove occupied by the upper sash,

one of these holding plates being secured to the extension bar and being capable of being retracted to allow the screen to be placed in osition from the inside of the window. As construct the screen, it is held against inward displacement or liability to be pushed inward by lateral projections on the outer face preferably at or near the lower ends of the side bars, these projections bearing against the outer face of the window casing which is generally of uniform thickness in all houses namely about inches or a trifle thinner than the thickness of the screen. This fact enables me to make use of Specification of Letters Patent.

Patented Jan. 7, 1908.

' Application filed July 13,1906. Serial No. 326.104. Renewed November 21,1907. Serial No. 403.190.

this construction and to avoid the necessity of using special strips.

I illustrate my inventionby means of the accompanying drawing in-which Figure 1 is an elevation of the screen looking from the inside, Fig. 2 is a section on y y of Fig. 1 and Fig. 3 is a section on :1; m of Fig. 1.

The screen is made up in the usual manner with the end bars I) and b and side bars (1 and c. As here shown, one of the side bars is rabbeted out at its inner face and in the rabbet is placed the flat extension bar e which acts to take up the variations in the different windows fitted. The extension ha f 6 is so mounted that it has a lateral mo-- tion with respect to the side bar 0. As here shown, the connection is made by pins (2 in the inner edge of the extension bar which pass through and slide in openings through the bar a. Springs are provided between the inner edge of the bar a and the rabbeted portion of the bar 0 for forcing the bar e outward against the casing of the window. The amount of play of bar 6 is such that when at its inner position the screen will just pass through the narrowest window that would be found with the Width of glass which the screen was intended to be used for and when at its outer position the edge of the bar 6 would be something more than wide enough to reach the casing. a

The screen is held in place in the window against outward displacement by holding plates which are secured to the inner face of the side bars preferably about in the center and which project out far enough to catch the shoulder formed by the outer portion of the groove occupied by the upper sash.

On one side is the stationary late (1 fixed to the side bar (1 with screws and having pfieferably on its inner end a handle by w 'ch; the screen is handled, the outer end of the plate projecting beyond the edge of the bar.

he holdin plate F on the opposite bar is slidably he (1 both with relation to the extension bar e and the side bar C and it per- 1 forms the function of retractin the extension bar and holding the screen in p ace. As here shown, it is connected with the bar 2 by means of a screw f assing through slots f so that when retracted it first draws back the outer end of the plate thus freeing the screen and allowing it to be swung. inward and upon bein further retracted it draws in the extension ar thus releasin the screen from the friction caused by t e outward pressure of the bar against the casin'g. The plate F is as here shown provided with means whereby it ma be clamped to the bar to hold the plate 1n its outer position so that it cannot be accidentally withdrawn. For this purpose as'hereshown, I provide a thumb screw f engaging an openin in the side bar in connection with a slot in the holding plate. On the inner end of the late {is a handle to be used in connection wit the andle of plate (1 for manipulating the plate and also for handling the screen. The screen is held against the inward displace-' ment or against any forcetending to ress it inward at the top by resting against t e outside of the lower rail of the upper sash and as to the lower portion of the screen by lateral projections n and n on the outer face of the side bars. preferably at their lower ends. These projections may be small metal plates projecting beyond the edge of screen and rest against or in proximity to the outer face of the window casing as above stated.

From what has been said the operation and advantages of my screen are apparent. When it is desired to put in the screen, the thumb screw f 3 is loosened, the bar e and the plate F drawn into their inner positions in which condition the screen is passed through the window to the outside by tilting it and the side of the screen carrying the bar at may be inserted at an angle the bar d resting against the casing just outside the groove of the upper sash the end of the plate (1 resting against the outer edge of the groove, and pro jection 'n against the outer face of the window casing. The'bar C can now be swung inward-clearing the casing until it reaches the same position as bar d and with the upper bar I) brought to rest against the outside of the lower rail of the upper sash and projection n coming against the outer face of the casing The lower bar of the screen isbeveled to rest on the inclined sill of the window. Having inserted'the screen, the plate F is released and the bar e immediately springs out and presses against the casing '1', and by pushing out the plate F its and projects into the oove 7' .of the upper sash. The plate F is t en locked in place by the thumb screw f. It will be seen that when held in this position the screen can be raised by sliding it upward until the plates F and (2 come against the lowerrail of the upper sash. It is held firmly against both inward and outward displacement and forms tight joints with the casing and upper sash. A screen made in this manner with allowance made for variation in the widths. of windows which use the same width of glass may be made and ke t in stock by ardware and other stores an be inserted by the purchaser without any fixtures being attached to the house.

The holding plate F may if desired be immovably fixed to the extension bar' e with its outer end projecting out beyond the edge of the bar, by tightening the thumb screw f as shown in Fig. 1, the playof the bar laterally being sufiicient to allow the same to be drawn in by the casing when the bar is retracted. This arrangement however, is less desirable than that described since it would require a larger amount of play for the bar e to cover the same variations in different sizes of Window casing. V

I claim 1. The herein described window screen having end bars and side bars, a lateral extension bar slidably connected with one of the s ide bars, -a holding plate adjustably mounted on the inner face of said extension bar to extend beyond the outer edge of the extension bar, and a holding plate on the inner surface of theopposite side bar'ex:

tending beyond the outer edge of said side bar.

2. The herein described window screen having end bars and side bars, a lateral extension bar slidablyconnected with one of the side bars, a holding plate adjustably mounted on the inner face of said bar to extend beyond the outer edge of the extension bar, means for'clamping the holding plate to the side bar, and a holding plate on the inner surface of the opposite side bar extending beyond the outer edge of said side bar.

3. The herein described window screen having end bars and side bars, a lateral extension bar slidablyfconnected with one of the side bars, springs for holding said extension bar in its outer position, a holding plate mounted on the extension bar to extend be yond the outer edge thereof, means for clampin said holding plate to the side bar, and a ho ding plate on the opposite side bar ex-- outer edge of the extension bar, and a holding plate on the opposite side bar.

5. The herein described window screen having end bars and side bars, one of said side bars being rabbeted out on its inner face, a lateral extension bar held in said rabbet,

pins in the inner edge of said extension bar and holes in the side bar for the passage of said pins, springs between the inner edge of the extension bar and the su'rfaceof the side bar for forcin the extension bar outward, a holding plate av'ing horizontal slots, screws passing through one or more of said slots for adjustably securing said plate to the extension bar, a thumb screw passing through one of said slots for securing the plate to the sidebar and a holding plate on the op osite side bar extending beyond the outer er ge thereof.

, 6. The herein described wlndow screen having end bars and side bars, a lateral extension bar slidably connected with one of the side bars, springs for holding said extension bar in its outer position, a holding plate provided with horizontal slots, screws passing through some of the slots for adjustably securing the holding plate to the inner surface of the extension bar, said holding plate being adapted to have its outer end project beyond the outer edge of the extension bar, a thumb screw passing through one of the slots in the holding plate to clamp the holding plate to one of the side bars, and a holding plate on the o posite side bar.

7. he herein described window screen having end bars and side bars, a lateral extension bar slidably connected with one of the side bars, a holding plate adjustably mounted on the inner face ofsaid extension bar to extend beyond the outer edge of the extension bar, a holding plate on the inner surface of the opposite side bar extending beyond the outer edge of said side bar, and lateral extensions on the outer face of the lower portion of the screen to bear against the outer surface of the window casing.

8. The herein described window screen having end bars and side bars, a lateral extension bar slidably connected with one of the side bars, a holding plate adjustably mounted on the inner face of said extension bar to extend beyond the-outer edge of the extension bar, and having a handle formed on its inner end, and a holding plate on the inner surface of the opposite side bar extending beyond the outer edge of said side bar.

9. In combination with a window casing, including beads arranged to form sash guides, and a sash mounted in the guides, of a window screen having end bars and side bars, two oppositely disposed "holding plates mounted on the inner surface of the sidebars intermediate the ends thereof, one of said plates being movably mounted, two oppositely disposed holding plates secured to the outer surfaces of the side bars at their lower ends, said screen being associated with the window casing so that its inner surface is flush with the outer surface of the upper sash, the holding plates projecting beyond the side bars of the screen and engaging the side surfaces of the opposite outer beads of the casing.

In witness whereof I have hereunto set my hand this 30th day of 'June, 1906.

CHARLES H KNOWLES.

WVitnesses:

S. W. BATES,

MARY A. DONALDSON.