Improvements in or relating to Lamps or Lanterns for Street Lighting and similar Purposes.
Year: 1897

page_text: Date of Application, 16th June, 1897-Accepted, 17th July, 1897
CUMPLEIE
DIEUIFICATION
Improvements in or relating to Lamps or Lanterns for Street
Lighting and similar Purposes.
I, GOTTLOB HIMMEL of The Institute for Mathematical and Technical Instru-
ments, Tübingen Wurtemberg in the Empire of Germany, Manufacturer, 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 lamps or lanterns for street lighting and similar
purposes, and has for its object to provide a peculiar form of case for use with
incandescent or other gas lights.
In the accompanying drawings,
Figure 1 is a vertical section;
Figure 2, an elevation; and
Figure 3, a cross section of a street lamp for two incandescent gas lights ;
whilst
Figures 4, 5 and 6 are drawn on a larger scale and show the mode of fastening
the two semi-circular halves of the case.
The bottom B and top A of the lamp or lantern are connected with one another
by means of two bars of T-shaped section arranged diametrically opposite one
another, so that the radiation of light from the lamp or lantern is impeded as little
as possible. The two semi-circular halves D and E of the case are pivoted on pins o
in the bars and have lugs d and e at their edges, through which lugs two
arms and f' of an unequal length of a fastening fork F are passed, by which
means the two halves of the case are securely fastened together. The longer arm f
is somewhat bent round under the lug so that the fork pin cannot be entirely
withdrawn from the said lugs d and e but the shorter arm f¹ on the other hand
may be entirely withdrawn from its lug so that the respective halves of the case
may be opened. The panes of the lantern, which panes are also semi-cylindrical
in form and preferably tapering are fixed in U-shaped bars in the case frames D
and E. The advantage of this improved lamp or lantern casing is that the radia-
tion of the light is interfered with as little as possible as there are only two
connecting pieces between the top and bottom. The lamp is also conveniently
accessible owing to the two halves being easily opened and even in windy or
stormy weather it may be attended to uninfluenced by wind or rain by opening
the half of the lantern opposite to the quarter from which the wind is blowing.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is :-
1. A lamp or lantern consisting of two panes of semi-cylindrical tapering form
inserted in frames, one only of which is arranged to open, substantially as
hereinbefore described and shown in the accompanying drawings.
2. A street lamp or lantern in which the frame for both panes may be opened

page_text: in opposite directions, the lamp being kept in a closed position by lugs (d and e)
arranged on the edges of the glass holding frames, arms (f and f¹) which are
inserted in said lugs and bars (C) for fastening the two halves of the. lamp
together substantially as described and shown.
Dated this 15th day of June-1897.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.