An Improved Device for Protecting the Mantles of Incandescence Burners when Removing the Chimneys.
Year: 1896

page_text: Date of Application, 7th Apr., 1896-Accepted, 9th May, 1896
COMPLETE SPECIFICATION.
An Improved Device for Protecting the Mantles of Incandescence
Burners when Removing the Chimneys.
We, LOUIS TEICHMANN, Dr. Dental Surgery, and EUSTACE HOPKINS,
Engineer, of 38 Krausenstrasse and 36 Alexanderstrasse, respectively, Berlin in
the Empire of Germany do hereby declare the nature of our invention and in
what manner the same is performed to be particularly described and ascertained
in and by the following statement :-
The present invention consists of a device for protecting the incandescence-
mantles of burners, whilst the chimneys are being removed, for instance for the
purpose of cleaning the same.
It is a well known fact in connection with incandescence burners that the mantle
is very often destroyed in taking off or placing on the glass chimney of the lamp,
unless this is done very carefully.
Now according to the present invention the mantle is covered by a metallic or
other cylinder, which fits inside the glass chimney of the lamp and is locked onto
the lower part of the chimney gallery. This cylinder forms a guide when taking
the chimney off and remains in position over the mantle until the cylindrical
chimney is replaced on the same when it also forms a guide preventing contact of
the chimney with the mantle.
When placing the cylinder on to the lamp the chimney of the latter forms a
guide for the former preventing its coming into contact with the mantle.
And in order to render the present Specification more easily intelligible reference
is had to the accompanying drawing in which similar letters of reference denote
similar parts throughout the several views :-
Fig. 1 is a side elevation of an incandescence burner showing the protecting.
cylinder in position on the same,
Fig. 2 is a part elevation of a modified form of the device,
Fig. 3 is a part elevation of the lower part of the protecting cylinder shown at
Figure 2 and
Fig. 4 a similar view of the lower part of the protecting cylinder shown at.
Figure 1.
Referring to Fig. 1 :-The gallery g supports the chimney 6 of the lamp within
which the mantle is situated. The gallery 9 is usually held on three arms e shaped
as shown and having openings d therein. The protecting cylinder a as shown in
Figure 1 is formed with a number of hooks c at the bottom (Fig. 4) corresponding
to the number of the gallery supporting arms e. The rear part of said hooks
extends upwardly in the form of a curve to the mouth of the next hook behind it
as will be clearly seen from the figure. The cylinder is approximately of the
same diameter as the interior of the chimney 6 being adapted to slide easily in the
same, but it must not have sufficient play to be able to touch the mantle. The said
cylinder is preferably provided with a handle f.
The device operates in the following manner :-
When it is required to remove the chimney 6 for the purpose of cleaning the
same, the cylinder a is let down inside the same until its lower hooks come into
contact with the upper edges of the arms e. On turning the said cylinder the
curved back surfaces of the hooks c will guide the said hooks into the openings d of
the arms and the cylinder will be fixed in position on the burner. The chimney
may now be removed without any possibility of its coming into contact with the
دريد

page_text: mantle being guided by the cylinder a. When the chimney has been cleaned it is
replaced over the protecting cylinder and the latter turned back to disengage the
hooks c and drawn out of the chimney.
с
The modified form-shown-at-Fig. 2 is adapted to suit the burners which have no
openings d in the arms or which have one of the arms without such opening as was
formerly the case when the mantle was suspended from a side rod which was
supported adjustably in one of the gallery supporting arms e as is well known to
In this case the lower end of the
those conversant with incandescence burners.
cylinder is of the same shape as at Fig. 4 but instead of hooks, c, slots c¹ only are
formed as shown at Figure 3. These slots engage the small horizontal projections
on the lower rim of the gallery or crown which are formed at those points where
the arms e ore penetrate the said rim as will be readily understood. The
operation of the cylinder a¹ is the same as that described with regard to Figure 1.
Although two methods of fixing the protecting cylinder onto the burner have
been shown we wish it to be understood that any suitable method may be employed,
without departing from the nature of the present invention, but these appear to be
the best.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is performed we declare that what we claim is :-
In incandescence lamps a protecting cylinder for the mantle when removing
the chimney, adapted to be slid down the said chimney and means for fixing the
said cylinder to the burner supporting crown substantially as described.
The combination of a cylinder a adapted to fit in the chimney of an incandescence
burner, a series of hooks formed at the lower end of same and having curved backs
and adapted to engage the arms of the burner gallery in the manner and for the
purpose substantially as described and shown.
Dated this 7th day of April 1896.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, W.C., Agents for the Applicants.