An Improvement in or applicable to Glass Chimneys.
Year: 1895

page_text: Date of Application, 24th Sept., 1895-Accepted, 2nd Nov.,
1895
COMPLETE SPECIFICATION.
An Improvement in or applicable to Glass Chimneys.
I, GEORGE FELIX TRAUFFLER, of 99, Hatton Garden, London, Importer of
oreign Goods, do hereby declare the nature of the said invention, and in what
anner the same is to be performed, to be particularly described and ascertained in
nd by the following statement :-
This invention relates to an improvement in or applicable to glass chimneys such
s used for incandescent, Argand and other gas burners, oil and spirit lamps and the
ike; the improvement being designed to avoid or lessen the liability of such
himneys to fracture, through uneven expansion or contraction thereof, on sudden
changes of temperature, and in the event of fracture, to prevent or aid in preventing
he fractured parts from falling.
The invention is applicable to cylindrical and to bulged, bulbed, choked and
are ordinarily made entire, but for
such other forms of such chimneys as
convenience will be hereinafter described as applied to a cylindrical chimney.
The invention consists mainly in breaking the continuity of the material of the
chimney in a longitudinal direction by cutting or dividing the same longitudinally
or by making the chimney in circumferential sections, adapted to fit and to be held
together in the desired relation to form the complete chimney, whereby, the
resistance due to the continuity of the material will be avoided and an approximate
freedom of radial and circumferential expansion and contraction will be obtained,
and the liability of fracture will, consequently, be materially lessened, the liability
of any fractured parts falling being also lessened by the parts which are adapted to
hold the sections together.
On the accompanying drawings:-
Figs. 1 and 2, represent sectional plans of a chimney made in accordance with the
invention, respectively through A, B, and C, D, Fig. 3.
Fig. 3, represents a sectional elevation, through E, F, Fig. 1.
The chimneys are preferably made in semi-cylindrical sections a, b, the longi-
tudinal meeting edges c, thereof being adapted to fit together so as to form the
complete chimney. The edges c, are preferably made rectilinear and parallel with
the axis of the chimney, as represented, but they may be made in angular relation
to such axis, and they may also be made of a sinuous or curvilinear form, but not so
advantageously, and may be colored or ornamented in any desired manner.
The sections a, b, are held together in their desired relation to each other by
annular capping bands d, into which the section ends are fitted and cemented or
otherwise secured. The bands d, are preferably made of metal, and may be made
of any desired ornamental formation and respectively adapted to fit a supporting
gallery and to act as or to support a shade-holder.
Chimneys thus formed with free edges will have greater liberty to contract and
expand according to the influence brought to bear on them, than entire chimneys,
10 and, hence, will be less liable to fracture.
Moreover, in the event of a fracture occurring, owing to any sufficient cause, the
fractured parts, unless shattered into fragments by the occurrence, will be protected
by the end cap bands from falling, which, in the case of incandescent systems of
gas-lighting in which expensive and fragile mantles are used as the illuminant, will
45 save the mantles from being destroyed and in the case of overhead lights, will
avoid the danger due to falling glass.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The manufacture of chimneys of the nature aforesaid, in manner aforesaid,
namely, with the continuity of the material broken by being cut or divided
longitudinally of the chimney, as set forth.
2. The manufacture of chimneys of the nature aforesaid, in manner aforesaid,
namely, with the continuity of the material broken by being formed in
circumferential sections divided longitudinally of the chimney, as set forth.
Dated this 24th day of September 1895.
DAY, DAVIES & HUNT,
321, High Holborn, London, W.C., Agents for the Applicant.