Improvements in Protecting and Sustaining the Mantles of "Welsbach" and similar Lights.
Year: 1897

page_text: Date of Application, yth Apr., 1897
Complete Specification Left, 9th Feb., 1898-Accepted, 12th Mar., 1898
Date of Application, 9th Apr., 1897
Complete Specification Left, 9th Feb., 1898—Accepted, 12th Mar., 1898
PROVISIONAL SPECIFICATION.
Improvements in Protecting and Sustaining the Mantles of
"Welsbach" and similar Lights.
I, CHARLES OAKES RUSLING, of 32, Spital Hill, in the City of Sheffield, Plumber
and Gasfitter, do hereby declare the nature of my invention to be as follows:-
My invention relates to an improved guard for equalizing the air supply and
thereby protecting the mantle from the effects of sudden draughts of air, which are
likely to destroy them, and will also lend support to the lower edge of the mantle
to prevent its destruction from vibration from various causes.
I propose to dispense with the usual glass chimney but this is not essential.
I construct a cone or dome, or more correctly the frustum of a cone or dome, of
finely-woven wire, or of perforated material, the base being made to fit into the
gallery which usually holds the glass chimney, and the smaller top opening to fit
round the screwthreaded ring which supports the metallic hood or its equivalent
directly below the gas flame.
This conical wirework or perforated guard separates the air supply into minute
streams and prevents any sudden inrushes of air from any direction.
When the mantle is placed in position upon the suspender of the lamp, the lower
edge will come in contact with the guard just below the hood before mentioned, and
will thus be prevented from vibrating or having a pendulous movement from the
suspender which tends to destroy its lower edge, and occasionally causes its collapse.
Dated the 8th day of April 1897.
ROBT. F. DRURY, C.P.A.,
Agent for Applicant, Bank Buildings, George Street, Sheffield.
improvements in Protecting and Sustaining the manties of
"Welsbach" and similar Lights.
Í, CHARLES OAKES RUSLING, of 32, Spital Hill, in the City of Sheffield, Plumber
and Gasfitter, do hereby declare the nature of this invention and in what manner
the same has to be performed, to be particularly described and ascertained in and by
the following statement; -
My invention relates to an improved guard for equalizing the air supply to, and
thereby protecting the mantle of Welsbach and similar lights from the effects
of sudden draughts of air, which are likely to be injurious, and also to lend support
to the lower edge of the mantle, to prevent its destruction from vibration arising
from various causes.

page_text: Fig. 1, is an elevation of the guard.
Fig. 2, a plan of same.
Fig. 3, shows its position when in use.
In carrying out my invention I construct a cone or dome, or more correctly the
frustum of a cone or dome of finely woven wire, or of finely perforated material A,
preferably bound and strengthened by bands of sheet metal B, at the top and
bottom edges.
The base is made to fit into the gallery G which usually holds the glass chimney,
and which may be dispensed with, and the smaller end of the cone is made to fit
round the upper part of the special burner which supports the mantle rod.
This conical or domed wirework or perforated guard A, separates the air supply
or divides it into minute streams, and prevents any sudden inrushes of air from any
direction.
.
When the mantle M, is placed in position upon the mantle rod or suspender,
its lower edge will come in contact with the guard A, and will thus be prevented
from vibrating or swinging about from the top of the rod on which it is suspended.
Such vibration or swinging motion caused by a movement of the gas bracket or
other causes, is a common cause of damage to the lower edge of the mantle, and also
of its total destruction.
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. In combination with the "Welsbach" or other like light using an incan-
descent mantle, a guard of woven wire work or finely perforated material, of a
conical or dome shape, placed under the mantle as hereinbefore described and
shown.
2. For use with the mantle of a Welsbach or other like light, a conical or domed
guard of woven wire or perforated material, upon which the lower edge of the mantle
may rest as hereinbefore described and set forth.
Dated the 7th dow of Wohmam 1000
ROBT. F. DRURY, C.P.A.,
Agent for the Applicant.