DE431995C - Insulating socket for electric light bulbs - Google Patents

Description

The invention relates to an insulating socket for electric incandescent lamps made of a cap-shaped one-piece porcelain body, in which the channels required for the storage of the metal cable lugs and directed transversely to the porcelain body have a closure that is homogeneous with the mass of the same. To this end, the the xingebrannten porcelain body originally transversely piercing channels prior to firing of the ^Porzel: lankörpers closed at the outer end with the same porcelain mass, fired and thereafter glazed, so that the end point has the same porcelain composition and the same outer glaze, as the rest of porcelain body. This organic connection of the closure porcelain mass with the porcelain body ensures better security against the effects of moisture, acid vapors and the like than was the case with the previously known porcelain insulating mounts of this type.

One . Embodiment of the subject matter of the invention is shown in the drawing by way of example wise in

Fig. Ι and 2 shown in two mutually perpendicular longitudinal sections;

Figures 3 and 4 show details.

The porcelain body α ^ has two cham- mera.lvEa.afn, in which ρ through channels, ρ, and its continuation ο forming channels ο

smaller clear width the leads freed from the insulating layer at their end are introduced. In these chambers / and tn there are contact pieces u and ν of a special shape (Figs. 3 and 4), for the introduction and attachment of which the channels χ and y in the porcelain body α are provided. The contact piece α has a leg 2 which is conductively connected to the threaded basket b by the screw g holding it. The contact piece α is bent at right angles and dimensioned so that its head leg, designed as a clamping sleeve, is at the level of the feed line entry. The substantially similarly shaped contact piece ν differs from the contact piece α only durrch serving as a center contact for the bulb angled bend w his foot limb 4. The screw-thread basket B may be expedient punched sprocket-shaped at its upper side e; When the teeth are in contact with the teeth, it is resiliently pressed outwards and, after being screwed in, sits firmly even if it is not completely screwed in.

In order to protect the channels λ: and y intended for the legs 2 and 4 of the contact pieces tt, ν from the penetration of moisture and the like, which could get into the porcelain body a from the outside, the as yet unfired porcelain body is completely protected penetrating channels χ and y on the outside of the porcelain body α are clogged with the same porcelain mass from which the porcelain body is made, whereupon the whole body

Fig.i.

: by being fired and glazed. If the j openings of the channels χ and y are of less j clear width, then simply covering the porcelain body with glaze is sufficient to achieve the desired closure. Since the channels ρ, ρ for the supply lines 1 are set off, the possibility of harmful vapors o.

Claims (2)

Patent Claims: i. Insulating socket for electric incandescent lamps made of a cap-shaped one-piece porcelain body, characterized in that the channels {x, y) which originally pierce the unfired porcelain body (a) and which originally cross the unfired porcelain body (a) prior to the burning of the porcelain body on the outside, are necessary for the storage of the flaps of the cable lugs («, ν) The ends are closed again with the same porcelain mass and then glazed, thus having the same porcelain mass and the same external glaze as the rest of the porcelain body at the termination point. 2. Socket according to claim i, characterized in that in the transversely directed channels (x, y) the foot legs (2, 4) ■ the angled contact pieces {u, v) are inserted, the head legs as clamping sleeves at the level of the feed line insertion holes (o, p) and take up the lead wires (1). , a Fig. 3. Fig. 4.