A Guard for the Mantles and like Burners of Incandescent Gas Lamps.
Year: 1894

page_text: Date of Application, 28th Mar., 1594
Complete Specification Left, 18th Dec., 1894-Accepted, 19th Jan., 1895
PROVISIONAL SPECIFICATION.
A Guard for the Mantles and like Burners of Incandescent Gas
Lamps.
I, WILLIAM DUNCAN, of 18 Easter Road, Leith, in the County of Midlothian,
North Britain, Solicitor, do hereby declare the nature of this invention to be as
follows:-
This invention relates to a guard for the mantles and like burners of incandescent
gas lamps. The usual mantle being usually very fragile is apt to be broken or
damaged when putting on the glass funnel. In accordance with my invention I
employ an appliance consisting of a metal band which can be placed around the
ordinary globe carrier or gallery. To the said band are fixed preferably three
upright wire rods held rigid at their top ends by a wire ring, the said uprights acting
as guides to receive the funnel so that the funnel cannot be brought in contact with
the mantle.
After the funnel has been put on, the guard may be removed,—
-30 that the one
appliance may be used for several lights.
Dated this 20th day of March 1894.
JOHNSONS,
115, St. Vincent Street, Glasgow, Applicant's Agents.
CUM DEIE DIEUITIVATION.
A Guard for the Mantles and like Burners of Incandescent Gas
Lamps.
I, WILLIAM DUNCAN, of 18 Easter Road, Leith, in the County of Midlothian,
North Britain, Solicitor, 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 a guard for the mantles and like burners of incandescent
gas lamps. The mantle being very fragile is apt to be broken or damaged when
putting on or taking off the glass funnel or chimney. In accordance with my invention
surround the funnel or chimney with a guard before taking off the funnel.
After the funnel or chimney has been put on again the guard may be removed,
so that the one appliance may be used for several lights.
Figure 1 is an elevation of the guard detached from the gas lamp.
Figure 2 shows the guard in use. Figure 3 is a sectional plan of the same.
A are three upright rods or wires which guide the funnel or chimney B when
the funuel or chimney is being put over the mantle M or being taken off.
C is a metal band which surrounds the funnel or chimney holder D and to which
the uprights are attached. The guard is held firm by means of the catches a which
are locked under the globe gallery E, as shewn in dotted lines Figure 3, by giving
the guard a motion of partial rotation.
I do not limit myself to the precise manner in which I have described and
illustrated the fixing of the guard upon the lamp as this may be varied in many

page_text: ways without departing from my invention, and in particular may be varied to suit
the particular burner to which the guard is to be applied. The catches a may be
of different lengths to suit various burners: for example-some burners are used
without a gallery E, in that case the catches a may be lengthened to catch under
the three projections F.
The construction of the guard may also be varied. For example: I may
construct it of two or more horizontal collars supported the one above the other
by one, two or three upright wires, or the said collars might take the form of a
wire spiral, all for the same purpose of guiding the chimney so as to prevent it
touching the mantle whilst the chimney is being removed or replaced.
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
The detachable mantle guard for incandescent gas lamps, substantially as
and for the purposes hereinbefore described and shewn in the accompanying
drawings.
Dated this 6th day of December 1894.
JOHNSONS,
115, St. Vincent Street, Glasgow, Applicant's Agents.