Improvement in or connected with Incandescent Gas Burners wherein Fragile Mantles are used."
Year: 1897

page_text: Date of Application, 15th Nov., 1897-Accepted, 18th Dec., 1897
COMPLETE SPECIFICATION.
"Improvement in or connected with Incandescent Gas Burners
wherein Fragile Mantles are used."
I, GEORGE WHITWELL CHALMERS of No. 55 Gamon Street, Footscray, in the
Colony of Victoria, Australia, Gasfitter, 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 has been devised for the purpose of providing means for over-
coming certain objections which are found to exist in the employment of the usual
Incandescent Gas Light Mantles and their fittings, viz., the liability of such
Mantles to crumble or break to pieces when the fittings receive shocks or vibra-
tons. I provide an intermediary "shock receiver" which cushions and absorbs
any sudden concussions and prevents same being communicated to the fragile
Nantle. By my invention the life of a Mantle is thus considerably lengthened,
and such Mantles may, in connection with my invention, be employed in certain
places and under certain conditions in which they at present must be excluded,
for instance, in manufactories, vessels, streets, and other places where vibration
is present. The appliance or apparatus embodying my invention is cheaply con
structed and not liable to get out of order.
In order to make my invention clear I shall describe same with reference to the
accompanying sheet of drawings in which--
Figure 1 shows a vertical section of one form of appliance embodying my
invention.
"
Figure 2 is a sectional plan on line " a-a of Fig. 1, whilst
Figure 3 is an elevation, partly in section, illustrating means of connecting the
pilot light with my anti-vibratory appliance.
In these drawings "A" represents the usual Bunsen employed in connection
with incandescent Mantle fittings, such Bunsen being screwed or secured on to
the usual gas connections. Upon this Bunsen a spiral spring "B" is placed,
such spring being preferably arranged to encircle and closely fit upon the said
Bunsen, and having at its bottom a portion, "B," turned into volute form, such
portion forming a base and which rests upon the reducing portion of the Bunsen.
The spiral spring is arranged preferably with convolutions near the base close
ogether, and somewhat spread out towards the top, B2" and extends above the
aid Bunsen. This spring is arranged to support a weighted body or inert
nass, "C," of metal or other material, and preferably about 1 pounds in weight.
This weighty body is recessed out at "for the reception of the spiral spring
nd has near its bottom an enlarged recess, "02," in which the extending or
olute base, "B," lies, said base being arranged to press lightly upon the sides
the said recessed part, so as to assist in keeping the weighted mass in a true
r plumb position, at the same time allowing of slight sway in any direction.
The weighty mass or body, "C," is open at its top and provided with a tube, "C3"
ommunicating with said opening, said tube being for the purpose of receiving
he ordinary crown, "D" (Fig: 3), carrying the burner, Mantle, &c. Although
prefer the form of inert body or mass above described, I may construct same of
FD 077

page_text: any other tasty or convenient form which would preserve the equilibrium of the
chimney as effectually, and conserve and enclose a free passage for the gas.
"
"E" (Fig. 3) represents the ordinary pilot tube which with the Bunsen, "A,"
is connected with the gas supply service. This tube, "E," passes up within the
Bunsen and spiral spring, B," and projects for a short distance above it. I
provide a similar tube, "F," which terminates in an enlarged mouth, "F¹," and
in this said mouth the aforesaid pilot tube, “E,” terminates without being in
contact with it. This tube "F," is supported preferably by a crossbar, "F","
attached to it, and which rests upon the top of the Bunsen. The tube, "F," pro
jects into the burner and is in communication with small jet, "G," or it may be
fixed rigidly to the top portion of the burner.
In lieu of the spiral spring I may employ analogous forms of springy connec-
tion between the Bunsen and the weighted mass, such as flat metal strips or
rubber cushions.
In practice when the fittings receive a shock or concussion such as that given
by an accidental blow, or otherwise, which would in the ordinary way be com-
municated to and break the fragile Mantle, such concussion is (when my inven-
tion is used) received and rendered ineffectual by the spring, "B," and the heavy
inert body, "C," and no harm will result to the said Mantle
By means of the enlarged mouth of the hanging pilot tube a certain amount of
vibratory movement is allowed for the fitting so that concussions which may be
received by the Bunsen, "A," are not communicated through the medium of
the tube to the crown, D," and its friable Mantle.
"
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
1. In Incandescent Gas Burners wherein fragile Mantles are used.
A heavy inert body arranged to support the combustion portion of the burner
and connected with the gas supply fittings by an interposed spring substantially
as and for the purposes set forth.
2. In Incandescent Gas Burners wherein fragile Mantles are used.
A heavy inert body supported by a spring or cushion in such a manner that its
most weighty portion depends below the point upon which such body hangs or
impinges substantially as and for the purposes set forth.
3. In combination a heavy inert body, as "C," a spring cushion as "B,"
Bunsen as "A," and an incandescent Mantle, substantially as and for the pur-
poses set forth.
4. In Incandescent Gas Burners wherein fragile Mantles are used.
"
In combination a Bunsen as "A," spring cushion as "B," inert body as "C,"
pilot light tube as "E," hanging tube as 'F," having dilated mouth, substan-
tially as and for the purposes set forth.
5. In Incandescent Gas Burners wherein fragile Mantles are used.
The combination and arrangement of the whole of the parts substantially as
illustrated respectively on Figs. 1 and 3, as and for the purposes set forth.
Dated this 15th day of November 1897.
November 1897.
JOHN P. O'DONNELL, Fel: Chart: Inst. P.A.
Agent for the said Applicant.
70 & 71 Palace Chambers, Westminster, S,W.