US612452A - Corner-joint for screen-doors - Google Patents

Description

Patented Oct. I8; |898. AYRES & 0. D. ELBEL.

CORNER JUINT FUR SCREEN DOORS.

(Application filed Nov. 13, 1897.) N 0 M o d e rlfll lll 344/0 Thom as /ly Elbe 0S wwZoLD.

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THOMAS H. AYRES AND OSWALD D. ELBEL, OF SOUTH BEND, INDIANA.

coRNER-JOINT-Fon SCREEN-noone.

SPECIFICATION formingipart of Letters Patent N o. 612,452, dated OCOber 18, 1898- Application iiled November 13, 1897. Serial No. 658.433. (No model.)

To VMZ whom t may concern,.-

Be itknown that we, THOMAS H. AYRES and OsvvALn D. ELBEL, citizens of the YUnited States, residing at South Bend, in the county of St. Joseph, in the State of Indiana, have invented a new and useful Corner-Joint for Screen-Doors, of which the following is a specification.

Our invention relates to the frame of window or door screens, and more especially to r Vsingle piece of sheet metal bent to form two parallel plates adapted to be inserted in slots in the ends of the side frames, a connectingbar being provided by the same bending, which when the bracket is placed in position will lie at an angle of forty-live degrees across the corner-joint, ears being also formed to lie against the inner side of the adjoining side and end bars of the frame and adapted to be secured thereto by nails or screws.

Our invention further consists in the improved construction, arrangement, and combination of parts hereinafter fully described and afterward specifically pointed out in the appended claims.

In order to enable others skilled in the art to which @our invention most nearly appertains to make and use the same, we will now proceed to describe its construction and' op`A eration, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l is a perspective view of the lower portion of a screendoor provided with corner-brackets constructed in accordance with our invention. View illustrating the parts composing one corner-joint of a frame, the corner-bracket be` ing secured to one of the side bars and the Fig. 2 is a detail perspective.

other side bar detached. Fig. 3 is a detail sectional view illustrating a corner-joint formed in accordance with our invention. Fig. L is a detail plan view of the sheet-metal blank from which our improved corner-bracket is formed.

Like letters of I reference mark the same parts wherever they occur in the different iigures of the drawings.

Referring to the drawings by letters, A, B, and C indicate the bottom and side bars of a screen-door. -The adjoining ends of each of these bars, as well as the fourth bar of the frame, (not herein shown,) are mitered, as shown at A and B in Fig. 2, and are further provided with parallel slits or saw-kerfs extending some distance into the bars, as clearly shown at A2 and B2.

D indicates our improved corner-bracket, which is composed of a single piece of' sheet metal of the shape indicated in Fig. 4, which is substantially a square with portions cut out at diagonally opposite corners.

In forming our improved corner -bracket the blank is bent on the broken lines E E until the wings or portions F of the blank 4at an angle of ninety degrees to each other,

and in position when the bracket is secured to the side bars to lie against the inner side of the adjacent bars of the frame. In mak.- ing a corner-joint with our improved bracket the wings F F are slipped into the saw-kerfs A2 and B2, which bringsv the connecting plate or bar Gin a position at an angle of forty-five degrees to the two adjacent side bars of the frame, the interior bracket taking a position, as clearly shown in Fig. 1,'on the right hand. In this position the bracket is secured by means of nails I, passing through the framebar and the two win gs F F of the bracket and clenched on the opposite side, as clearly shown in Fig. 3. The bracket is further secured and the corner further braced and stiifened by driving a nail J through each of the ears H into the bars against which these ears lie.

From the foregoing description of the construction and operation of our invention it Will be seen that we have produced a very simple, cheap, reliable, and durable cornerbraclret for screens or other frames Which can be readily attached or detached Without the necessity of employing skilled labor or any special tools and that a frame put together With our improved corner-brackets Will securely maintain its position under all ordinary Wear and usage.

While We have illustrated and described thebest means now known to us for carrying out our invention, We do not Wish to be understood as restricting ourselves to the exact details of construction shown and described, but hold that any slight changes or variations as might suggest themselves to the ordinary mechanic would properly fall Within the limit and scope of our invention.

Having thus fully described our invention, What We claim as new, and desire to secure by Letters Patent of the United States, is-

1. lA corner-bracket for screen or similar frames constructed of. sheet metal and comprising tWo parallel Wings connected together by a right-angled strip, said Wings being adapted to enter saW-kerfs in the frame-bars, and ears extending outwardly from the ends of the connecting-strip and bent at angles of forty-five degrees to said strip, or ninety degrees to each other,substantially as described.

2. Acorner-j'ointforscreen or other frames comprising tWo adjacent mitered bars provided with parallel registering saW kerfs, a corner-bracket provided with parallel Wings secured in said sawkerfs and connected together by a strip at right angles to the Wings extending from one bar of the frame to the other across the corner at an angle of fortyiive degrees, and ears projecting from the ends of said connecting-strip at an angle of about forty-iive degrees thereto and secured to the inner faces of the adjacent bars of the frame, substantially as described.

THOMAS H. AYRES. OSVVALD D. ELBEL.

Witnesses:

ELMER E. BYERs, JACOB E. HENRY.

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