US1656875A - Adjustable screen and process of making same - Google Patents

Description

Jan. 17, 1928. 1,656,875

T. M. VAUGHAN ADJUSTABLE SCREEN AND PROCESS OF MAKING SAME Filed Dec. 29, 1925 2 Sheets-Sheet 1 L f W" Z0 :2 A9 INVENTOR.

HG: 2 7710465 M WWW A TTORNE Y.

Jan. 17, 1928. 1,656,875

T. M. VAUGHAN ADJUSTABLE SCREEN AND PROCESS OF MAKING SAME Filed Ego. 1925 2 Sheets-Sheet 2 A TTORNE Y.

Patented Jan. 17, 1928.

. UNITED STATES PATENT orrics.

THOMAS M. VAUGHAN, OF SALEM, OHIO,

ASSIGNOR OF ONE-HALF TO HO'WARD I1.

SCHUMACHER AND ONE-HALF TO CAR-L E. SCHUMACHEE, BOTH OF HARTVILLE,

OHIO.

ADJUSTABLE SCREEN AND Application filed December This invention relates to the manufacture of screens or ventilators and particularly to adjustable screens made of sheet metal. The object of the invention is to improve upon the design of screens of this type in order. to economize in the manufacture and to simplify the design. A further object of the invention is to construct a metallic screen frame from asingle piece or sheet of material so as to avoid brazing, welding or riveting of the joints. The screen structure is also designed to be reinforced by a heavy wirepermanently seated in the edges of the frame and serving the double purpose of clamping the screen fabric .in position and strengthening the frame. A further object of the invention is to improve upon the sliding construction by means of which the screen members are adjusted to fit the win dow openings.

Other objects and advantages will be apparent from the detailed description of the invention, it being understood that changes and modifications may be made in embodiments of the invention as the same is set forth in the claims. The various steps in the process of manufacture have been illustrated, showing thesuccessive stages in the manufacture of the screen.

In the drawings:

Figure 1 is a sheet of metal of suitable size for themanufacture of one of the screen members showing the first and second steps in the manufacture Figure l is a cross-section thereof on the line 1-1.

Figure 2 is a view showing the sheet of material at the termination of the third operation;

Figure 2 is the cross-section thereof on the line 2 Figure 3 is a view showing the sheet of material at the termination of the first bending operation;

Figure 3 is a section thereof on the line ga ga;

Figure 4: is a view showing two of the finished screens in mating relation;

Figure 5 is a section on the line 55 of Figure 4;

Figure 6 is a section on the line 66 of Figure 4;

Figure 7 is a section on the line '4 of Figure 4; and

PRGCESS OF IMAKIIIG SAME.

29, 1925. Serial No. 78,139.

Figure 8 is a view showing a lock for preventing separation of the screen.

In all metallic screen structures of which I am aware, the screen frame members have been manufactured from a plurality of strips of material which have been united at the corners by welding, brazing or riveting. This construction is not strong and is expensive to manufacture. My improved screen structure is made from asingle sheet of metal, thereby preserving the strength of the material to the best advantage.

In the manufacture of the screen, a piece of metal of approximately the correct size and shape is first cut from stock, this sheet being indicated by the numeral 1 in Figures 1 and 1*. At the proper location inwardly from the edges of the sheet is then stamped the continuous wire receiving channel 2, this channel being substantially semi-circular in cross-section as shown in Figure 1.

The next step is shown in Figure 2 and consists in a trimming operation which stamps the sheet of material to its correct size and at the same time removes the coin ter of the sheet of material to form the screen opening 3.

The next step is shown in Figures 3 and 3 and comprises the first bending operation, at which time the edges of the sheet are bent upwardly as shown at 10.

The screen is now ready for the next and last operation in which the screen fabric is laid over the frame, the wire is pressed into the channel over the screen and the edges or flanges 10 on the upper and lower rails of one screen member are bent over, as at 1%, to partially enclose the wire reinforcing and stiffening element 9.

The edges 10 along the upper and lower rails of the screen members are formed at right angles to the plane of the members and are bent to give the mating sliding features to the screen. This is done by forming the upper and lower edges of one member with grooves 12, while the other screen mem her is formed with depending flanges 13. When the two members are mated, the flanges 13 enter intothe grooves 12.

The outer stiles of the screen members are formed by pressing the material around the wire 9 as shown in Figure 6.

The inner stiles are provided with flanges 15 which project inwardly in opposite direc bers, the flanges being notched and the outer walls of the grooves being bent downwardly at the ends beyond the notches thereof into the grooves to form said stops.

10. In a sliding window screen comprising two members, one of said members having grooves along the opposite rails, the other member having flanges along the opposite rails which mate with the grooves to form sliding connections between the members and stops to prevent separation of the members, the outer walls of the grooves being bent downwardly at the ends thereof into the grooves to form said stops.

11. In an extensible window screen comprising a pair of screen frames having relative movement upon one another, a stop comprising fianges upon the ends of the frames extending in opposite directions therefrom and adapted to strike one another to prevent separation of the frames in one direction, said flanges being formed from the metal of the screen frames.

12. In an extensible window screen comprising a pair of screen frames having relative movement upon one another, each frame consisting of a sheet of metal having a channel and a screen retaining wire seated in the channel, and a stop for preventing separation of the screen membersin one direction comprising flanges formed from the sheet of metal and projecting outwardly of the planes of the screen frames and iii opposite directions.

THOMAS M. VAUGHAN.

Images