Improvements in Ignition Arrangements for Internal Combustion Motors.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Ignition Arrangements for Internal Combustion
Motors.
We, WILLIAM JOHN CROSSLEY, of Crossley Brothers, Limited, Openshaw, Man-
chester, and JAMES ATKINSON, of The Woodlands, Marple, Cheshire, Engineers,
do hereby declare the nature of this invention to be as follows:-
-
A method of igniting the charges in an internal combustion motor very
commonly adopted is by means of a tube the interior of which is opened to the
cylinder at proper times by means of a suitably operated ignition valve, the tube
being kept red hot by means of an external flame. Occasionally these hot tubes
burst either from accident or deterioration. To guard against stoppage of the
motor from this cause, two means of ignition have frequently been used and the
object of this invention is to combine the two means in a convenient and satis-
factory manner.
We employ two hot tubes, each having their own separate ignition valves, pas-
sages into the cylinder, and heating arrangements absolutely independent of each
other. The two hot tubes may be placed side by side with each other in separate
castings, but preferably are fixed in the one casting and placed end to end with
each other. In either case we bring the two ignition valves close together and
operate them by means of the same cam and gear.
Under ordinary circumstances both ignition arrangements are kept in action.
The ignition valves are so constructed that by means of a screw or wedge arrange-
ment either ignition valve can be held so as to be inoperative and to more or
less completely close the passage to the cylinder.
If either tube gives way the other tube continues to ignite the charges in the
cylinder without any interference from any rush of air or gases from the cylin-
der; this rush however may draw the attention of the attendant to the broken
tube who by means of the screw or wedge arrangement can shut off the rush
and replace the defective tube at once or at any convenient time.
Dated this Seventh day of April 1898.

page_text: COMPLETE SPECIFICATION.
Improvements in Igaition Arrangements for Internal Combustion
Motors.
We, WILLIAM JOHN CROSSLEY, of Crossley Brothers, Limited, Openshaw, Man-
chester, and JAMES ATKINSON, of The Woodlands, Marple, Cheshire, Engineers,
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;
1
A method of igniting the charges in an internal combustion motor very
largely adopted is by means of a tube the interior of which is opened to the
cylinder at proper times by means of a suitably operated ignition valve, the tube
being kept red hot by means of an external flame. This method is fully described
and illustrated in Letters Patent No. 3756 A.D. 1888 granted to Francis William
Crossley. Occasionally these hot tubes burst, either from accident or deteriora-
tion. To guard against stoppage of the motor from this cause two means of
ignition have frequently been used. The object of this invention is to combine
two means in a convenient and satisfactory manner with provision for operating
either one or both as may be desired.
To enable our invention to be clearly understood we illustrate a suitable
arrangement of it in an appended sheet of drawings in which Fig. 1 is a vertical
section through the ignition tufés, ports, valves and other parts, Fig. 2 is a
vertical section at right angles to Fig. 1 and Fig. 3 is a plan.
We employ two heated tubes A and B, each having their own separate ignition
valves C and D, separate passages E and F into the cylinder G, and heating
arrangements absolutely independent of each other. The two hot tubes A and B
may be placed side by side with each other in separate castings, but preferably
they are fixed in the one casting and placed end to end as shown in the
drawings.
In any case, the two ignition valves H and I are arranged close together,
parallel to each other, and are operated by the same cam K and working gear.
The working gear shown in the drawings is a tumbler L and a pusher piece M
working in a guide piece N.
Under ordinary circumstances both ignition arrangements are kept in action.
If either tube fails the other tube continues to ignite the charges in the cylinder
without any interference from any rush of air or gases from the cylinder through
the fractured tube. The noise caused by this rush may however draw the atten-
tion of the attendant who can shut off the connection between the cylinder and
the broken tube by holding in the corresponding ignition spindle H or I: The
ignition spindle can be held in by any suitable means such as a wedge or screw,
in the drawings screws 0 and P are shown, one for each tube.
The defective tube being shut off by means of the screw O or P a new tube
may be fitted at once or at any convenient time without interrupting the satis-
factory ignitions of the charges in the cylinder by means of the other tube.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is;-
1. Ignition arrangements for internal combustion motors in which two ignition
tubes are placed in a suitable casting having provision for absolutely independent
ignition valves, passages and heating appliances for each tube, the ignition valves

page_text: being operated by the same operating gear and provision being made for shutting
off either tube as may be desired without interrupting the satisfactory working
of the other tube substantially as described and illustrated.
2. Ignition arrangements for internal combustion motors in which two ignition
tubes are placed in a suitable casting having provision for absolutely independent
ignition valves, passages and heating appliances for each tube, the ignition valves
being operated by suitable operating gear and provision being made for shutting
off either tube as may be desired without interrupting the satisfactory working
of the other tube substantially as described and illustrated.
3. The general arrangement and construction of ignition arrangements for
internal combustion motors substantially as described and illustrated.
DL L
1000
W. J. CROSSLEY.
JAMES ATKINSON.