Year: 1897

page_text: Date of Application, 9th Nov., 1897-Accepted, 11th Dec., 1897
I, THEODOR ZEUNERT of Trachau near Dresden, Germany, Merchant, 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 :-
The folding lamp of this invention is mainly designed for use with velocipedes
although it may be used for other purposes. It is adapted to be carried in the pocket
of the rider or user during the day, ready to be brought into use when darkness
sets in.
In the accompanying drawing Fig 1 is a view of the lamp of this invention opened
out or extended ready for use. Fig. 2 a transverse section thereof in the folded up
or closed position. Fig. 3 a cross section of Fig 1 but with the oil container and
top cap removed.
a, b, c, are round members or rings of metal, although they may also be of rectangular
or other suitable cross section, arranged to slide telescopically one within the other and
having on their ends stop shoulders or rims to limit their outward telescopic move-
ment. Further over the middle ring is slid a covering ring & which by its rim e
slides on the ring c and comes against the ring b.
The ring and the lens f with its frame or holder and the focussing frame g are
removably attached.
The rings b, d, are apertured at top and bottom for the reception respectively of
the wick holder h and top cap i (Fig 1) which two parts when the lamp is in use
prevent the rings from sliding inwardly.
To the rear ring c is attached an end plate by screws, or by hinges and a spring
catch, and said plate is provided with a stud for the attachment of a reflector m
corresponding in forni and size to the lens f (Fig. 1).
When it is desired to fold the lamp the wick holder and oil container h and the
cap i are removed and the rings then closed up telescopically upon one another.
After taking off the lens with its frame the reflector m is removed from the plate k and
attached to the front side of the lens (Fig 2) to which end yielding projections or
spring hooks may be provided, such for example as are used for watch cases or
watch glasses.
The oil container h is by its screwed recess m screwed on to the stud l after
removing the sleeve o which serves to bring the flame up to the middle of the height
of the lamp and in front of side glasses o' with which the lamp is also provided. The
top cap i is placed upon the oil container h.
P
The supply of air to the lamp takes place through holes p provided in the rings b, d,
those in the one ring being arranged out of line with those in the other for the
purpose of preventing a strong direct draught which might extinguish the lamp.
The rings b, d, also present the advantage that by reason of the former being
heated by the flame a thin current of air circulating between said rings is heated
before it passes through the holes p to the flame thus causing a more active com-
bustion and increasing the illuminating effect.
When it is desired to take the lamp to pieces, say for thoroughly cleaning the

page_text: same, it is only necessary to remove the plate from the ring c and the lens fand its
frame from the ring a when the rings may be separated.
For the purpose of facilitating the putting together of the parts of the lamp and
to prevent the rings turning round upon one another, these are marked and provided
respectively with axial ribs and grooves in which the ribs slide and are guided.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what I
claim is :-
1. A folding lamp in which rings or members a, b, c, of any suitable cross section
forming the lamp casing are arranged to slide telescopically in one another and to be
separable from one another, for the purpose specified, substantially as described and
shewn.
2. In the folding lamp referred to, the method of attaching the oil container h
together with the top cap i to the end plate & by means of a stud whilst the reflector m
is placed upon the outside of the lens f, for the purpose specified, substantially as
described and shewn.