US930078A

US930078A - Frame for window and door screens.

Info

Publication number: US930078A
Application number: US48805809A
Authority: US
Inventors: Allen H Mix
Original assignee: PORTER SCREEN Manufacturing Co
Current assignee: PORTER SCREEN MANUFACTURING Co
Priority date: 1909-04-05
Filing date: 1909-04-05
Publication date: 1909-08-03
Anticipated expiration: 1926-08-03

Description

A. H. MIX. FRAME FOR WINDOW AND DOOR SCREENS.

APPLICATION FILE'D APR.5, 1909.

Patented Aug. 3, 1909.

2 SHEETS-SHEET 1'.

I I I 7 I II! 1|] I lllll I I I ll I I I I I ll f I 1 A. H. MIX.

FRAME FORWI NDOW AND DOOR SCREENS. APPLIGATION FILED APR.5,1909.

2 SHEETS-SHEET 2.

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NITED STATES PATENT OFFICE.

ALLEN H. MIX, OF ARLINGTON, VERMONT, ASSIGNOR TO PORTER SCREEN MANUFACTURING COMPANY, OF BURLINGTON, VERMONT.

FRAME FOR WINDOW AND DOOR SCREENS.

T 0 all whom it may concern:

Be it'known that I, ALLEN H. MIX,.a citizen of the United States, residing in the city of Arlington, county of Bennington, State of Vermont, have invented a new and useful Improvement. in Frames for Window and Door Screens and for. other Purposes, of which the followingis a specification.

This invention has been devised with more particular reference to its use in connection with the wooden frames of window screens and the like, and it is in that connection that I shall describe it, without, however, limiting myself to its usein that connection.

The invention has to do with the. corner construction of the framethat is to say the joint by which the meeting ends of the end rails and side rails of the frame are united; and theobject is to obtain a cheap, effective and durable joint of this-character.

I shalli'irst describe the improvementi'in connection with the accompanying drawings, forming part of this specification, and shall then point out more particularly inthe claims that which I believe to be new andof my own invention.

In'the drawingsFigure 1 is a'perspective view of part of a window screen embodying my improvementthe same embracing. the meeting ends of two adjacent rails, and the screen fabric held by the same. Fig.2 is a view of the same parts with the rail ends separated from one another, and themolding on the rabbeted face of the vertical rail section also removed, so as to show the construction of the joint. Fig. 3 is a plan of the same parts fitted together, but with the molding of the vertical rail section removed, and: the other molding partly broken away. Fig. 4 is a view of the tongued inner face of said molding. Fig. 5 is a view, similar to Fig. 3, of amodification in which the locking tongue is separate from the molding. Fig. 6 isa view of the inner face of the vertical molding in this modification.

In the drawing, A is the one rail section, and B is the other. Each rail onits inner edge is rabbeted as at a, to form a shelf for reception of the edge of the screen fabric X; and in the face of the shelf or rabbet is formed a longitudinal groove 5;

C is the molding which is fitted to therebbet' over the edge of the wire fabric, and is there tacked to the body of the rail, thus Specification of Letters Patent.

Application filed. April 5, 1909.

Patented Aug. 8, 1909.

Serial No. 488,058.

inner face. of the molding. is a longitudinal tongue 0 which enters the groove 12 in the rail, forcing the screen fabric into said groove, and thus fastening said fabric more securely in the screen. Thus far there is nothing essentially new in the. construction.

The joint between the two rails A B isv a square mortise and tenon joint, thetenon d being-on the rail A, and the Inortise'c in the rail B. In the face of the rail A opposite that in which the rabbet a is formed, is a transverse recessf formed in the edge of the rail adjoining the tenon,having. its bottom flush with the corresponding face of the tenon and its rear wall undercut as at f.

The mortise e in rail B, adjoins the end of the shelf'a. From the point where this shelf terminates, the rabbet is deepened by the thickness of the tenon d,.so as to bring the face of this recessedportion g flush with the farther wall of the mortise, the near wall of which is flush with the shelf or rabbet a. The part 9 forms a tongue which, when the joint is closed, fills the recess f in the other rail and is provided with abeveled edge g to match and interlock with the undercut wall f of saidrecessa When the tenon (Z is fitted to its mortise, its near face will be flush with the rabbet a. In the face of that portion of the reduced part. of the rail which adjoins the tenon is formed a groove 5 which extends from the inner edge of the rail in a direction crosswise of the tenon, and is so located that when the tenon is housed in its mortiseit (the groove 1)) will be outside of the mortise and opener uncovered. This groove 6 in the one rail is designed to be engaged when the joint is closed by a tongue or looking. strip attached to the other rail, so as to prevent the joint from drawing apart.

The tongued molding C of rail B is, in the present instance utilized as such a locking strip. To this-end the groove 6, is so located in its rail A that it is on the prolongation of the groove 6, in rail B, when the tenon is home in its mortise. The molding O of the rail B overlaps that portion of railA which contains groove Z) and is provided on its inner face with. a tongue in this instance an extension of tongue cwhich enters groove 5, thus locking together the. two meeting ends of the rails: against any drawing apart of the mortise and tenon joint. holding the screen fabric in place On the place by small nails, as usual. The joint between the meeting ends of the two moldings or rails A, B, is represented by a miter joint; but the same construction, so far as the locking of the two rails together by the molding on the one rail entering a groove Z) in the other rail, can be employed with a square, instead of a miter, joint.

The interlocking of the undercut f on the one rail with the bevel edge tongue 9 on the other rail, is not indispensable; but I prefer it inasmuch as it stiifens and strengthens the joint and takes off from the tenon (1 strains which otherwise might come upon it.

The screen fabric X, as shown in Fig. 3, extends over the groove 1) in the tenoned rail .A, and is forced down into that groove by the tongue on the molding appropriate to that rail. On the mortised rail B, the screen fabric extends up to, but not over, the groove Z) therein, so as not to interfere with the actionofthe locking tongue. The screen fabric on this edge is of course held by the same nails which secure the molding in place. This is the preferred arrangement. But, of course, the screen fabric can project, on all its edges, over the grooves b of the frame rails if desired.

Obviously the structural embodiment of the locking tongue device for preventing the drawing apart of the members of the mortise and tenon joint, may be variously modified without departure from my invention. For instance, in the modification shown in Figs. 5, 6, the locking tongue consists of a rod or bar 0 (preferably of metal) which is separate from the molding. It is conveniently made of round wire of a size to fit and fairly fill the grooves b b to the extent to which it occupies them. In the present instance the locking tongue is bent at about its middle so that the two limbs will stand at right angles with one another. The one limb fits in the groove 1) of the mortised rail and the cross groove 1), in the tenoned rail, and the other limb thence extends into the longitudinal groove 1) in the tenoned rail, acting as a tongue to hold the edge of the wire in the said groove. In this construction the tongues on both of the moldings, are duly shortened (as shown for one of the moldings in Fig. 6) so' as not to interfere with the separate locking tongue 0, the moldings when in place acting to cover, as well as to hold in place, said locking tongue.

If desired, the limb of the locking tongue 6 which enters the groove 12 in the tenoned rail A can be dispensed with, or severed from the other limb, at the dotted line 0 Fig. 5, the locking tongue in this case consisting of a straight metal bar extending from the groove 6 in the mortised rail into the cross groove 6 in the tenoned rail.

That the locking tonguewhether forming part of the molding or notcan be thus conveniently and efficiently applied, is due primarily to the fact that the locxing grooves for said tongue in the meeting ends of the rails, are formed in the face of the rails beyond the mortise and tenon joint, so that they remain open and uncovered after the joint is closed, in a position to ermit the locking tongue to be fitted or laid directly into both of them without any lengthwise sliding movement, such as takes place when a dowel pin is driven into a hole.

Having described my improvement an the best way now known to me of carrying the same into ractical effect, I state in conclusion that l do not restrict myself narrowly to the structural details herein shown and specified in illustration of the invention, since manifestly the same can be varied in a number of respects without departure from the principle of the invention. But

W hat I claim herein as new and desire to secure by Letters Patent is as follows:

1. The rails A B having their meeting ends united by a mortise and tenon joint, that portion of the tenoned rail beyond the tenon having in its face a groove which extends from its inner edge in a direction crosswise of the tenon, and remains open after the joint is closed, and a locking tongue secured to the mortised rail and projecting into and engaging said cross groove in the tenoned rail, substantially as and for the purposes hereinbefore set forth.

2; The rails A B having their meeting ends united by a mortise and tenon joint and having on their inner edges longitudinally grooved rabbets, the tenoned rail formed also with a groove crosswise of the tenon and on the prolongation of the longitudinal groove in the rabbet of the mortised rail, in combination with a locking tongue fitting and held in the longitudinal groove in the mortised rail and projecting into the cross groove in the tenoned rail, and moldings secured in the rabbets, substantially as and for the purposes hereinbefore set forth.

3. The rails A B having their meeting ends united by a mortise and tenon joint and rabbeted on their inner edges, the tenoned rail having a groove 6 crosswise of the tenon, and moldings secured in the rabbets, the molding on the mortised rail overlapping the portion of the adjoining rail in which the groove 1) is formed and being provided with a projection or tongue to enter and engage said groove.

4. The rails A B having their meeting ends united by a mortise and tenon joint and having on their inner edges rabbets a formed with grooves b, the tenoned rail having a groove 6, crosswise of the tenon and on the prolongation of the groove 1) in the rabbet in the adjoining rail, in combination with moldings secured in the rabbets, provided with tongues to enter the grooves b therein,

the molding on the mortised rail overla ping the portion of the adjoining rail in whic the cross groove 7) is formed, and provided with a locking tongue to engage said groove.

5. The rail A formed with rabbet 11 having groove 1) therein, tenon d, cross-groove b and undercut recessed portion f f, and the rail B formed with a rabbet at having groove 1) therein, mortise e to receive the tenon d, and a beveled tongue 9 g to fill and interlock with the undercut recessed portion f f of the rail A when the tenon is home in the mortise, in combination with tongued mold: ings secured in the rabbets in the rails and engaging the grooves b therein, the molding on rail B also overlapping the portion of rail A in which the groove 1) is formed and engaging said groove.

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

ALLEN H. MIX; .Vitnesses:

O. E. ADAMs, SYLvEsTER O. DEMING.