DE303100C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

· - JVi 303100 CLASS 65 d. GROUP

ARTHUR RICHAU in KIEL. Cartridge lock.

Addition to patent 303099.

Patented in the German Empire on May 19, 1914. Longest duration: May 19, 1928.

The subject of the present invention is a further embodiment according to the Patent 303099.

The drawing shows, for example, embodiments of the cartridge closure

Fig. Ι with reaching over the edge of the cartridge jacket inner cover and overlaid outer cap,

Fig. 2 with the cuff in place, and
3 with a rubber ring inserted into a groove.

To use the cartridge according to patent 303099 also provided with outer cap, the sunk * formed 5 arranged waterproof VerschlußdeckeH so that it is wrapped h even around the edge of the cartridge shell and thereby offers the possibility of q by the above striped outer closure cover of the Watertightness of the cartridge to give increased protection (see Fig. 1).

With this double lock, the metal cover q is sheared through at the edge of the cartridge casing h ^a 5, which is offset here, by impact or pressure, as often occurred with the simple metal cover lock previously used, as a result of the soft base or ' of the resilient material of the inner cap i fixed. The outer sealing cover also provides a guarantee for securing the inner sealing cover against injury.

Instead of the lower sealing disk or cap, an annular bead r, cuff k or the like made of rubber or suitable, waterproof impregnated material and similar materials can be placed directly on the flat edge or in a recess r in the edge of the cartridge casing h (see Fig 2 and 3), over which the metal cap is then slipped over.

The lower sealing disc or cap can also be coated with a suitable impregnating material or paint, e.g. B. with water glass o. The like., Are connected watertight to the bearing surfaces, while the metal cap q is attached watertight to the cartridge casing, so that the bearing surfaces of the two lids and the cartridge rim are connected to one another by waterproofing impregnation or adhesives. The material used for the lower closure lid i is preferably rubber or other waterproof impregnated substances, such as celluloid or the like.

Claims (2)

Patent Claims: i. Cartridge closure according to patent 303099, characterized in that the upper edge of the cartridge casing (h ) is offset to accommodate an outer closure cap (q) and the sunk-in, watertight impregnated closure cap (i) grips with its flared edge over the upper edge of the cartridge casing (A), wherein the contact surfaces of the two covers and the cartridge edge with each other are connected by waterproofing impregnation or adhesives. 2. Cartridge closure according to claim i, characterized in that the inner closure cover (i) is replaced by a cuff (k), annular bead (r) or the like, made of waterproof material, resting on the upper edge of the cartridge casing (h). For this purpose ι sheet of drawings.