Year: 1886

page_text: Date of Application, 24th Mar., 1886.
Complete Left, 24th Dec., 1886.
Complete Accepted, 22nd Feb., 1887.
I, CARL SEEL of 16 Christstrasse Charlottenburg in the Empire of Germany, Elec-
trical Engineer do hereby declare the nature of this invention to be as follows:-
This invention relates principally to the make and break arrangement of the electric
current, in incandescent electric lamps, and consists in the first place in arranging the
lamp in such a manner, that by means of turning a knob mounted on the pipe or
bracket containing the wires, the lamp may be partially rotated.
The lamp is fitted into a rotating bush and is brought into partial rotation by means
of an eccentrically fixed pin, with the said knob, whereby the break and make of the
current is caused.
The invention consists in the second place in providing the lamp with spring
contact blades, which keep the lamp in constant contact with the stationary contact
surface.
The invention consists in the third place in forming the bush partially rotating with
the lamp, with a T shaped slot for the purpose of receiving conjointly, the lamp and
the globe gallery in the double bayonet slots.
To this end, the ends of the wires, inside the said pipe or bracket, are fixed to a
non-conducting disc by means of screws. To the said pipe or bracket is fitted a
bush and stud, on which latter is mounted and can be rotated a knob provided
with a pin.
The said partially rotating bush is prevented from coming off the stationary pipe or
bracket, by means of two horizontal slots and screws & is also provided with another
horizontal and a vertical slot as well as T shaped bayonet slots.
Through the second named horizontal slot passes the stud of the rotating knob and
through the vertical slot, the said pin, whereby the partially rotating bush can be
rotated on the stationary pipe or bracket. The double bayonet slot serves for the
reception of the globe gallery which is fixed into the bayonet slot, as well as for the
reception of the incandescent lamp, which is placed into the same slot & by rotating
the same will get fixed in the opposite slot thereof. To the underside of the lamp,

page_text: are fixed by means of serews, spring blades, which conduct the current through the
said screws to the carbon thread.
To ensure a perfect tight joint, between the supply wires and the glass globe, the
latter is strengthened inside.
It will be understood that the disc on the underside of the lamp, as well as the
disc in the partially rotating bush, is made of non-conducting material & the space
between the disc and glass globe may be filled up with any suitable non-conducting
material.
When turning the knob the lamp which is always in close contact with the rotating
disc by means of the spring blades, may be brought either into contact with the non-
conducting part of the rotating disc or with the fastening screw, thereby making
the current.
The contact blades may be fitted either to the mounting or to the lamp.

page_text: I, CARL SEEL, of 16 Christstrasse, Charlottenburg in the Empire of Germany Elec-
trical 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 principally to the make and break arrangement of the electric
current, in incandescent electric lamps, and consists in the first place in arranging the
lamp in such a manner, that by means of turning a knob mounted on the pipe or
bracket containing the wires, the lamp may be partially rotated.
The lamp is fitted into a rotating bush and is brought into partial rotation by means
of an eccentrically fixed pin, with the said knob, whereby the break and make of the
current, is caused.
The invention consists in the second place in providing the lamp with spring
contact blades, which keep the lamp in constant contact with the stationary contact
surface.
The invention consists in the third place in forming the bush partially rotating with
the lamp, with a T shaped slot for the purpose of receiving conjointly, the lamp and
the globe gallery in the double bayonet slots.
And in order that my invention may be better understood I have caused to be
appended hereunto one sheet of drawings marked with letters of reference indicating
like parts in the various figures.
Fig. 1 is a side elevation. Fig. 2 a vertical section. Figs. 3 & 4 detached side
elevations, and Figs. 5, 6, 7, 8 and 9, plans.
In carrying out my invention a is the pipe or bracket containing the wires, the ends
of which are fixed to a non-conducting discy by means of screws f.
To the said pipe or bracket a, is fitted a bush 7, and stud b, on which latter is
mounted, and can be rotated, a knob d, provided with a pin s.
The said partially rotating bush 7 is prevented from coming off the stationary pipe
or bracket by means of two horizontal slots i, and screws c, and is also provided
with another horizontal, and a vertical, slot g, ' respectively as well as T shaped
bayonet slots t, t¹, t².
Through the second named horizontal slot y passes the stud of the rotating knob d,
and through the vertical slot g', the said pin s, as shown in Figs. 2 & 3, whereby the
partially rotating bush I can be rotated on the stationary pipe or bracket a.
扎
The double bayonet slot t, t¹, t, serves for the reception of the globe gallery which
is fixed into the double bayonet slot t, t', t², as well as for the reception of the incan-
descent lamp, which is placed into the portion t, t, of the slot aforesaid, and by
rotating the same will get fixed in the opposite slot t² thereof.
To the underside of the lamp, are fixed by means of screws o, spring blades m
which conduct the current through the said screws to the carbon thread sec
L

page_text: To ensure a perfect tight joint, between the supply wires and the glass globe, the
latter is strengthened inside.
It will be understood that the disc p on the underside of the lamp, as well as the
disc in the partially rotating bush 7, is made of non-conducting material, and the
space between the disc p and the glass globe a may be filled up with any suitable
non-conducting material.
When turning the knob d, the lamp which is always in close contact with the
rotating disc q by means of the spring blades m, may be brought either into contact
with the non-conducting part of the rotating disc q, or with the fastening screw f,
thereby making the current.
The contact blades m may be fitted either to the mounting or to the lamp.
Having now particularly described and ascertained the nature of this invention and
in what manner the same is to be performed I declare that what I claim is :-
In glow lamps :-
:-
1st. The combination of a supply pipe or bracket a carrying the movable knob d
and bush 1, moved by the knob d, with the glow lamp carried by the movable bush 1,
for the purpose of making and breaking the contact of the current, by means of
turning the knob d substantially as set forth.
2nd. In the combination specified in the preceding claim, the employment of the
bayonet slots t, 1, 2, for the purpose of facilitating the fastening of the lampe and
globe gallery by means of the same bayonet slot t, to the bush substantially as
set forth.
3rd. In the combination specified in claim I, the employment of a transport device,
consisting of the bush 7 provided with the slots g & g', and rotating knob d, provided
with the pin s, or reverse arrangement of slot and pin respectively, for the purpose of
making and breaking the contact of the current, substantially as set forth.
4th. In the combination specified in Claim I the employment of a glow lamp a
carrying the spring contact blades m for the purpose of ensuring the required contact
with the ring 7 substantially as set forth.
BOSSHARDT & GRANT,
4, Corporation Street, Manchester,
Agents to the Applicant.