An Improvement in Igniting Apparatus for Gas and Oil Motor Engines.
Year: 1892

page_text: Date of Application, fet June, 1002 Accepted, 2nd July, 1000
COMPLETE SPECIFICATION.
An Improvement in Igniting Apparatus for Gas and Oil Motor
Engines.
I, HENRY PERCY HOLT, of Openshaw. Manchester, in the County of Lancaster,
Engineer, 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 :-
My invention relates to a simple construction of igniting apparatus for gas and
oil motor engines, so arranged that the tube employed for producing ignition can be
fully and rapidly heated and readily renewed, as I shall describe referring to the
accompanying drawings.
Fig. 1 is a sectional plan and Fig. 2 is an end view of one form of the
apparatus;
Fig. 3 is a sectional plan and Fig. 4 an end view shewing a modification.
Fig. 5 is a part sectional plan and Fig. 6 is an end view of a modified form of
spring.
Fig. 7 is a vertical section and Fig. 8 an end view shewing another arrangement
of spring.
Figs. 9 and 10 are sectional plans shewing two forms of tubes held by springs
clamping their containing block.
Fig. 11 is a sectional plan shewing a flanged tube having the block clamped by
two springs and
Fig. 12 is a sectional plan of a tube held by a single spring in the block. In
these figures, the same letters are, as far as possible, employed to indicate
corresponding parts.
On the engine cylinder I provide or fix a block B having in it a chamber C
lined with asbestos or other suitable refractory material which is a bad conductor
of heat.
Under or at the side of this chamber is fixed a Bunsen burner D and round its
flame there is an annular passage A for admission of air. Across the chamber C
under a chimney M a short tube E, preferably of ceramic material, is fixed,
communicating with the cylinder directly or through the casing G of the ignition
valve which, as shewn in the drawings, is of the kind described in the Specification
No. 3756 of 1888, and communicates with the cylinder by the passage L.
The tube E may be itself open at both ends as shewn in Figs. 1 and 10, and in
communication with a separate chamber F. Or the chamber F may be part of the
tube which in that case is made with a closed end, as shewn in Figs. 3, 5, 7, 9, 11
and 12.
When no ignition valve is used, the communication is direct from the tube E to
the cylinder, the space F being in that case so proportioned that the ignition of the
charge in the cylinder results from its compression forcing part of the charge into the
space F through the heated tube E. The tube E has an asbestos washer at its open
end or at each open end and is clamped in its place by spring pressure which may
be applied in various ways. As shewn in Figs. 1 and 2 a helical spring S is
arranged in a cap P bolted on the block B. In Figs. 3 and 4 an elastic plate H is
secured to the block by two bolts; in Figs. 5 and 6 the elastic plate H is held by
one bolt, and in Figs. 7 and 8 by a nut Q that can be turned by the fingers. In
Figs. 9, 10 and 11 two helical springs are provided under the heads of the screws
by which the block B is fixed to the cylinder the tube in Fig. 11 having a flange
with an asbestos washer on each side. In Fig. 12 the spring S is arranged in a
cavity of the block B. The tube E, being surrounded by the flame of the burner,
D

page_text: is effectually heated, and, when worn or damaged, it can be readily removed by
loosening the clamping nuts or screws, so that a fresh piece of tube can be
-substituted:
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
Igniting apparatus for a gas or oil motor engine consisting of a tube com-
municating with a passage to the cylinder and elastically clamped over a burner in
a chamber lined with refractory material, substantially as described.
Dated this 1-4
1000
.
ABEL & IMRAY,
Agents for the Applicant.
ABEL & IMRAY,
Agents for the Applicant.