Improvements in the Method of and Means Employed for Connecting Electric Glow Lamps to Main Conductors.
Year: 1898

page_text: Date of Application, 16th Feb., 1898-Accepted, 26th Mar., 1898
Improvements in the Method of and Means Employed for
Connecting Electric Glow Lamps to Main Conductors.
I, FRIEDRICH PALM, of No. 1, Katharinenkloster, Nurnberg, in the Empire of
Germany, Electrical Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:—
This invention relates to improvements in the method of and means employed for
connecting electric glow lamps to the wires of a main conductor, such lamps hereto-
fore requiring suitable and special fittings fixed to the main conductors. The object
of the present invention is to so construct the glow lamps that they can readily be
attached to the main conductors direct, thus dispensing with the fittings beretofore
necessary.
Such being the nature and object of my said invention, the following is a complete
description of same, reference being had to the accompanying drawings, in which:-
Fig. 1 is a cross sectional elevation, and Figs. 2 and 3 are side elevations of glow
lamps with the improved fixing attachments applied thereto.
Fig. 4 shews two sectional elevations of a contrivance for holding and straining the
wires from the main conductor.
Fig. 5 is a sectional elevation of a modified means of attaching a glow lamp to the
main conductor.
Fig. 6 is a sectional view of part of Fig. 5.
According to this invention and referring to Figs. 12 and 3, at 1 is a glow lamp
bush or head filled with cement and in which two pressure springs 2 in contact with
the ends of the platinum wires 6 connected to the fibres are fixed.
These pressure
springs 2-2 are bent at their outer ends so that they will clip and hold on wires 4
and receive the current from them. The surface of the cement in the bush or head 1
has a covering of paraffin wax or other similar substance.
In Figs. 5 the glow lamp is shewn as fixed with pins. The lamp consists of an upper
part 3 and a lower part 5 between which the wires 4-4 from the main conductor are
strained. The two blade springs 2-2 (see Fig. 6) press against the wires 4-4 and
are connected to the bushes 9 for the pins 8 fixed in the bush or head 1. The
current is received from the conductor wires 4-4 by the springs 2-2 and passes
through the bushes 9 and to the glow fibres by way of the pins 8 to which the former
are connected. In all cases the wires 4 are strained between insulated brackets 7 as
shewn in Fig. 4.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
(1) The general construction, arrangement, and combination of parts constituting
the improved glow lamp, and means for attaching same to the main conductor, as
and for the purpose herein described and substantially as illustrated by the annexed
drawings.

page_text: (2) The two pressure springs 2-2 connected to the fibre 6 and fixed in the bush or
head 1 for carrying the lamp and connected to parallel strained wires 4--4, all in
combination as and for the purpose herein described and substantially as illustrated
by Figs. 1, 2 and 3 of the annexed drawings.
(3) The two pressure springs 2-2, the bushes 9-9, the pins 8-8 connected to
the platinum wires 6 and fixed in the bush or head 1 and the wires 4-4 strained
between an insulator 7, all in combination as and for the purpose herein described and
substantially as illustrated by Fig. 5 of the annexed drawings.
Dth th Jan f Dahman 1000
FRIEDRICH PALM,
By his Agents, Brierley & Howard,
Penny Bank Chambers; Halifax.