US1308428A - Metal sash or frame - Google Patents

Description

L. S. LAC'HMAN- METAL SASH 0R FRAME.

APPLICATION FILED SEPT. 12. 1914.

1 ,308,428. Patented July 1, 1919.

WITNESSES 260/ INVENTOR L Lawrence allacivmam By UNITED STATES PATENT OFFICE.

I LAURENCE S. "LACHMAN OF NEW YORK, N. Y., ASSIGNOR T0 UNIVERSAL ELECTRIC WELDING COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

METAL SASH OR FRAME.

To all whom it may concern:

Be it known that I, LAURENCE S. LACK- MAN, a citizen of the United States, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Metal Sashes or Frames, of which the following is a specification.

My present invention relates to frame or sash construction and particularly to the construction of joint for securing and look ing the members at their intersections.

The invention is particularly useful in the construction of metal window frames but its utility is of wide scope and applicable to any suitable metal framework or similar construction.

The object of the invention is to provide a simple and efficient means for joining the intersecting members of the structure.

The invention consists in the improved construction hereinafter more particularly described and then specified in the claim.

g In the accompanying drawings:

Fi re 1 is a plan view of two intersecting mem rs prior to being locked together.

Fig. 2 is a transverse section of one of 1 the members taken on the line 2-2 of Fi 3 illustrates the two intersecting mem ers of a frame together with the looking button arranged one above the other in the relation in which they are assembled, parts being shown in cross-section.

Fig. 4 1sa plan view of the completed joint.

Fig. 5 is a plan view of a slightly modified form of intersecting members after being joined together. i

Fig. 6 is a cross-section through a modified form of locking button or plate.

Fig. 7 is a side elevation of a button which might be employed with the form of intersecting members shown in Figs. 1 and 4.

In the drawings, 1 and 2 indicate two intersectin metallic strips typifying two of the mom rs of a sash, frame, partition or other structure to which the invention is applicalble. Each of the strips is T-shaped in cross-section whereby each strip has two angles in which the edges of a pane of glass or panel is secured. Each strip is provided with a longitudinal ridge or rib 3 preferably extending the length thereof midway between the edges 0 the flanges. 'The ridge Specification of Letters Patent.

Patented July 1, 1919.

Application filed September 12, 1914. Serial No. 861,348.

or rib 3 is preferably rolled on the strip at the time of its original formation or it may be otherwise formed.

The flanges of each strip are mitered out as at 4 from the edge of the flange to the web at each desired point of intersection. The webs of the members 1 and 2 are also slotted in line with the apex of the mitered portion, the member 1 being provided with a slot 5 entering from the lower edge of the web and of a width equal to the thickness of the web while the web 'of the member 2 is provided with a similar slot 6 entering from the to of the web, the slots 5 and 6 being of su cient depth that when the members 1 and 2 are placed crossing each other with the slots in line they can be inter-meshed until the fianges of the members lie in the same plane. When so placed the miters 4: engage and the joint appears as shown in Fig. 1.

The two members 1 and 2 after being placed in the position shown in Fig. 1 are locked together by a metallic button or connector 7 of any desired form. The button 7 is provided with a depending projection or projections preferably in the form of a circular ridge 8 stamped or otherwise provided on the under surface of the button. The button 7 is placed centrally over the intersection of the strips, the ridge 8 resting up and intgrsecting the ridges 3 of the members 1 an 2.

The parts are held in this position. between the electrodesof a suitable electric welding machine and electric current is passed from one electrode to the other through the button 7 and members 1 and 2 while at the same time pressure is applied. As the current passes through the parts from one electrode to the other the points of isolated contact, formed by the intersections of the ridge 8 and ridges or ribs 3, soften and on the application of pressure, preferably through the electrodes, such points coalesce with each other and weld the button to the intersecting members. The electric welding process being well known in the art and universally practised further description of its use in connection with this invention is deemed unnecessary.

In the manner of joining the members shown in Figs. 1 to 4, the free edge 9 of the button 7 bears on the top of the ridge 3 after the completion of the welding operation whereby a space exists between the unout as at 20, (Fig. 7) to allow it to span the ridges 3 in which form it could be used with the intersecting members shown in Figs. 1 and 4 or instead of forming a continuous ridge on the strips 1 and 2, short ribs or projections 11 might be fonned in which case the entire welding projections would be incased by employing the form of button shown in Fig. 6.

It will be understood that the invention is not limited to the details of the formation of the parts as herein shown except as may be expressed in the appended claim.

'What I claim as my invention is:

A metallic sash or frame comprising T- shaped intersecting members arranged with the flanges of said members in the same plane, ridges rising from the top of said members, a button provided withwelding projections superimposed over the intersection of said members and welded thereto by said projections and ridges and a depending flange on the edge of said button adapted to bear against the flanges of said members.

Signed at New York in the county of New York and State of New York this 11th day of September, A. D. 191a.

LAURENCE S. LACHMA N.

WVitnesses:

F. G. TowNsEND, HENRY A. Guns.

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