DE208196C - - Google Patents

Description

IMPERIAL

PATENT OFFICE

- M 208196.-CLASS 21 δ. GROUP

from the

March 20, 1883
December 14, 1900

The present invention relates to a galvanic dry element of the type in which weU rather the preferably one with longitudinal corrugation increased surface area presenting carbon electrode tightly packed by a porous, stiff depolarization mass is applied. • The purpose of this mass is to create ways for ventilation along the carbon electrode and to create degassing in such a way that it promotes the ability to depolarize and also promoted the escape of heavy gases from the sub-layers will. In the case of tubular, a brownstone mixture or the like in the cavity Carbon electrodes of this type are already known for ventilation and gas escape thereby creating a way upwards or outwards, that one of the cavity at the head of the coal passages lets flow into the open; the arrangement of longitudinal deductions in the carbon body is also otherwise known per se, but so far this arrangement has not been installed with repackaging knew how to adapt the carbon electrode so that the porous, moistened depolarization mass was immediately exposed to a large extent. The porosity of the carbon electrode, which is particularly due to the layering surface of the moist Depolarization mixture wears off quickly, is of little use for the purpose of ventilation. To achieve the desired effect, the invention is characterized in that in the case of repackaging with depolarization material, along two or more on the outside the coal running grooves from bottom to top continuous ventilation channels in connection are left free with lower transverse channels. These channels can either be uniform carbon body or with longitudinal division of the same and union of the pieces into one Be formed whole.

In the accompanying drawing, in "Figs. 1 and 2 (side view and cross-section AB) an embodiment of the 'carbon electrode, as is useful for installation according to the invention, is illustrated. Figs. 3 and 4 show modified cross-sectional shapes with a two-part carbon body.'

According to FIGS. 1 and 2, the carbon a, which has to serve as an electrode or discharge core of a dry element, has a generally cylindrical shape and is tightly surrounded by the depolarization mass for the purpose of use. Longitudinal grooves rr are useful on opposite sides

Claims (2)

attached to the carbon as venting channels and extend, as can be seen from Fig. ι, continuously to the top of the carbon a, where it has a suitable design for the pole terminal socket. The clamp is to be replaced, however, does not grasp the head of the coal such that the upper free mouth of the groove would be transferred rr. A lower cross connection of said grooves is created on the one hand by the bottom surface channel b and on the other hand by a cross channel or a bore c or several such; this cross-connection forms the aid to facilitate the escape of the heavier gases from the lower layers. When repackaging or embedding the carbon in the depolarization mass, the channels rr are left open and unfilled, e.g. B. in that one rods of any material or ao glass tubes temporarily inserted and after the coal has been coated and the installation is complete. In the upper part of the channels will be useful short tubes used continuously; the same should be through the sealing layer around the Head through. The described installation of the coal with channels left free in the packing material is for the effectiveness of the element, its duration of discharge, uniform effect its full height and reloadability of particular influence, so far not alone the porous mass' allows a freshening up by air coming in, but also the heavier gases (carbonic acid) in the lower layers have a collection path upwards is released,. from which they, according to the repression on the part of the, closed Element ceiling retained and a counterpressure exerting lighter gaseous Products (ammonia) can escape; the gassing of the depolarization mass. with Ammonia gas all the way down seems useful rather than harmful. Carbonation in the lower part of the element, on the other hand, works unfavorably. Of course she has described venting only serves its purpose ■ Use of a stiff electrolyte - mixed with the depolarization mass - and not when using a liquid electrolyte or not even with such so-called dry cell pathogens, in which a noticeable accumulation of motile Liquid is possible. By adding flour or a similar absorbent to the mass should rather be provided for constant absorption of moisture, by failing the channels with liquid :: would be moved. The withdrawal and the circulation of the gases can also be promoted by arranging longitudinal gaps or joints on the coal, taking advantage of the porous interior properties of the coal. The outer surface of the coal is ribbed or grooved for such gas removal, whether the coal may be (Fig. 2) ■. 'can not be used, firstly because the porosity of this outer surface is almost completely eliminated because of the suction of the liquid, and secondly because the purpose of the dissipation, in order to achieve the lowest possible resistance, requires the depolarization mass to be pressed as tightly as possible against this surface. Fig. 3 shows the embodiment of a carbon, which is composed of two halves bevelled at the edges u υ , so that the channels rr arise through the joining. The joint / passes through the coal between their parts and "the whole amount and that forms a complementary Gasabführungsweg without impairing the conductivity by a certain extent the transverse channel c ι from Fig., Replacing 2 of the effect after and by the way also the bottom channel b entbehrlieh makes. . In Fig. 4, an embodiment is also illustrated in cross section, in which the carbon parts u ν to increase the joint area at f ¹ with longitudinal ribs and grooves in a zigzag arrangement, and in which instead of the grooves r (Fig. 1 to 3) a pair of internal channels r ¹ r ^{2 is provided} to limit the longitudinal recesses on both sides. The latter are to be filled with the depolarization material except for the channels r ¹ r ² in the inner corners, just like those that surround the coal. The carbon electrode can also consist of more as two parts to be assembled in the manner described, being for the connection have any suitable aids used. The circulation paths created can also serve to partially Regenerating the element or blowing air or gases for depolarization, to introduce substances at all in a proper distribution of the mass or to circulate them permit. · Patent-A ν Proverbs: i. Galvanic dry element with longitudinally corrugated carbon electrode: thereby characterized in that in the repackaging with depolarization mass along two or several external grooves from bottom to top continuous ventilation channels are released, which are connected to the lower transverse channels, a discharge especially of the heavier gases and allow air or gas to circulate. , 2. Embodiment of the carbon electrode for the dry element according to claim i, characterized in that the carbon is longitudinally divided, and that the smoothly superimposed or interlocking parts with ribs (uv) complement each other to form the outside ventilation channels. For this purpose ι sheet of drawings.