DE620936C - Trunnion bearing for a cylinder hood that can be pivoted about its central axis, in particular for typewriter tables - Google Patents

Description

The invention relates to trunnion bearings for rotating hoods, especially those on tables for writing and other office buildings chinen.

In the known designs of typewriter tables with rotating hoods, the latter was stored either in gelerics or in pivot pins, which were usually accessible from the outside and thus enabled unauthorized opening of the hood. The gap required for lowering the hood in the table top was kept relatively wide in order to simplify the Z ¹ U assembly. But that could easily cause the inside of the hood to get dusty. The invention consists in bearing brackets which are to be fastened with their horizontal legs on the table top and whose vertical legs have open slots into which the hood provided with pivot pins on its side walls can be inserted from above and locked by washers provided with an open slot, which are secured against unintentional lifting out by the side walls of the overlying fixed hood covering the pivot bearing. As a result, the pivot pin of the hood is installed completely covered so that it is neither visible nor accessible from the outside, which prevents the hood from being opened by unauthorized parties.

One in the fastening shear of the bearing vortex arranged elongated hole allows easy and precise alignment of the hood in the countersunk gap of the table top. Through this the gap can be kept narrow and the inside of the hood easily kept free of dust will. At the same time, any bumping into the hood during movement is avoided, so that it can rotate freely.

The drawing shows an embodiment of the subject matter of the invention. It shows

Fig. Ι the concealed pivot bearing in side and elevation,

Fig. 2 the pivot,

Fig. 3 the locking plate for the bearing bracket,

Fig. 4 the bearing bracket itself, _ ₀

Fig. 5 an office machine table with a closed rotating hood in elevation,

Fig. 6 an office machine table with a closed rotating hood in side view and

Fig. 7 shows the same table in side view with the rotating hood open.

It refers to the actual α pivot with the intermediate ring and b 'of the base plate g, with which the pin is attached to the DrehhaubeA. The pivot is supported in the bearing swivel c which is provided with an open slot d. The exact alignment of the bearing is ensured by arranging an elongated hole e in the fastening

leg of the elbow reached. Through the elongated hole there is a shift in the Longitudinal direction as well as turning around the retaining screw, which can be bent in the elongated hole, is possible. A hole next to the elongated hole is used for the final fastening of the bearing by a screw.

In order to prevent the pivot pin from being accidentally lifted out of the bearing, ίο a slotted plate / is pushed under the head of the pivot pin α , which in turn is secured by the fixed side wall i of the hood placed above it.

Claims (2)

Patent claims: i. Trunnion bearing for a cylinder hood pivotable about its ■ central axis, which, together with a cylinder hood fixedly arranged on the table top, complements a half cylinder in the locked position, especially for typewriter tables, characterized by bearing brackets to be fastened to the table top with their horizontal legs [c ], the vertical legs of which have open slots (d) , in which the hood (Jt) provided with pivot pins (g, a, b) on its side walls can be inserted from above and locked by washers (/) provided with an open slot , which are secured against unintentional lifting out by the side walls of the overlying fixed hood (i) covering the pivot bearing. 2. Trunnion bearing according to claim 1, characterized in that the fastening legs of the bearing bracket (c) are provided with an elongated hole (e) for a retaining screw in order to achieve easy and precise alignment when installing the hood. 1 sheet of drawings