US2305292A - Frame for typewriting machine - Google Patents

Description

Dec. 15, 1942.

FRAME FOR TYPEWRITING MACHINES Filed May 4, 194a Paid AB. Gerber by his Attorney P. A. B. GERBER 2,305,292

Patented Dec. 15, 1942 UNITED STATES FTENT OFFICE FRAME FOR TYPEWRITING MACHINES Paul August Benjamin Gerber, Dresden, Germany; vested in the Alien Property Custodian 1 Claim.

The present invention refers to a frame for typewriting machines, especially portable typewriters or machines of a like character.

Generally we find in typewriter two kinds of frames, one of cast iron or other cast metal, the other of sheet metal. The present invention refers to the latter kind which presents greater advantages for portable typewriters because it is lighter in weight and practically indestructible.

Such typewriter frames of sheet metal known so far have been assembled usually from several individual parts as for instance a front part, two side parts and a rear part. They are usually bolted together, a fact which in itself is a weakness, since bolts are bound to become loose and thus weaken the resistance of the frame and with it naturally the entire machine. Sometimes they are soldered or welded or folded together.

The frame of my invention is to be made of only one piece and it is th main object of my invention to present a frame drawn out of only one piece of sheet metal. p

A second object of my invention is to give to that typewriter frame a shape which by its rigidity and lines very much increases its resistance and stability as compared with known frames of sheet metal.

A further object of my invention is to render it possible to use the new frame not only as a supporting frame, which carries all component parts of the typewriter, but also to give it lines of an ornamental character doing away with a clumsy exterior, thus combining looks and utility.

Other objects will be brought out in the following description and in the annexed drawing, in which Fig. l is a perspective view of the entire frame of my invention,

Fig. 2 is a sectional view of the frame after it has been cut at center from the front to the rear, and

Fig. 3 is a sectional View of the frame following the line AB, shown in Fig. 2, which represents a cut through the center of either right or left side.

As shown, the frame of my invention consists of a unitary rectangular upstanding sheet metal enclosure I, which is lower at the front and rear and progressively higher at the sides, which terminate in their mid-portions in rectangular extensions 2. The bottom edge of this frame projects inwardly at a right-angle to form a rim 3,

which may vary in width in different parts depending upon the preference and requirements of the builder. The upper edge of the frame also projects inwardly at a right-angle to form a flange 4, the inner edge of which projects downwardly. Flange 4 constructed in this way and running unbrokenly all the way around the upper edge of the frame imparts great strength and rigidity and enables it to serve as the support for the axles, shafts and bars which carry all of the mechanical parts of the typewriter.

Additional supports or reinforcements are not essential but may be used. This construction of the frame allows top cover 5 (shown in dotted lines) to have a simple flat shape supported by flange 4. Formerly the sides of the frame were lower than the top of the machine and. necessitated a top cover which was bent down at the sides to meet the top of the old style frame. To carry this cover 5 lugs 6 projecting horizontally from the under inner edge of the flange 4 are provided, which lugs 6 act as a shelf for cover 5 so that it needs not overlap the frame. This gives a good and finished appearance to the typewriter. At the side the walls are of an even and unbroken surface and cover 5 may be so snugly fitted against the inner edge of flange 4 that the space between is negligible and scarcely noticeable.

If additional supports or reinforcements like I, 8 are desired, these can be soldered or welded to the inside of the frame to avoid the cutting of holes or other disfigurements of the sidewalls.

I claim:

A frame for a typewriter or other similar machine, comprising a rectangular enclosure having vertical walls, all composed of one continuous piece of sheet metal, a continuous flange integral with said walls and extending inwardly at a rightangle from the bottom edge thereof, a second continuous flange also integral with said walls extending inwardly at a right-angle from the upper edge thereof and then rectangularly downward, the front and back walls of said frame being lower than the side walls, and the side walls sloping upwardly from the front and back and each being provided with an upstanding rectangular extension in its mid-section, said side walls also being provided with integral inwardly projecting lugs for supporting a cover, said frame also serving as an ornamental outer casing.

PAUL AUGUST BENJAMIN GERBER.

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