Year: 1899

page_text: Date of Application, 4th Nov., 1899
Complete Specification Left, 27th Apr., 1900-Accepted, 7th July, 1900
FREDERICK JOHN CRINAGE, Thuilaston, Dunchurch, Rugby, Engineer, do hereby
declare the nature of this invention to be as follows:
An impulse every revolution explosive motor
The advantage of this motor is to get an explosion every revolution. Instead
of having a scavenger stroke, the air is pushed into a chamber in the back
end of piston on the outward stroke by two air pumps of which the barrels are
fixed in piston and plungers fastened to pump rods which are fixed on sides of
bed so that the battels travel with piston instead of the plungers travelling
When the exhaust valve commences to open, and releases the pressure in cylinder
the valve in back of piston or an chamber opens and the pressure of an contained
in this chamber helps out the exhaust The exhaust valve closes at a given point
of the inward stroke which is regulated by an expansive or adjustable cam & the
au left in cylinder serves to make the next mixture and compression for explosion
on the next outward stroke A vapouse 18 bolted to end of casing, being
waterjacketed, this having a curved cover bolted to end which has an annulai
space round it, having two openings, one at bottom and one at top to allow jet
of a blow lamp to play on end of wall
1040
FREDERICK JOHN CRIXAGE, Thurlaston, Dunchurch, Rugby, Engineer, do hereby
declare the nature of this invention and in what mannel the same is to be per-
formed, to be particularly descubed and ascertained in and by the following
statement:
My improvements relate to engines worked by gasefied petroleum or other
liquid hydrocarbon the objects of my invention being to provide an efficient
engine giving an impulse every revolution of the crank shaft or less often as
desired.
Instead of having a scavenger stroke the air is pushed into an air chamber in
the back of piston on the outward stroke by two air pumps, the barrels of which
are fixed in piston, the plungers of same air pumps being fastened to rods
which are bolted to brackets cast or bolted on main bed, thus causing the barrels
to travel up and down while the plungers remain stationary.
When the exhaust valve of engine commences to open at a desired angle, and

page_text: thus relieves the pressure in back of liner or cylinder, a valve in the end of
piston (which end torms an air chamber) opens, and the pressure of air contained
in said chamber helps out the exhaust gases in vapoliser and end of liner oi
cylinder
The exhaust valve closes at a certain point of the inward stroke (the said valve
being regulated by an expansive or adjustable cam) and prevents a certain amount
of air left in liner or cylinder from escaping This residuum of all goes to
make part of the next mixture and compression for the next explosion on the
following outward stroke.
The oil pump, exhaust valve, and governors are operated by a lay shaft making
same revolutions as the crank shaft, and worked of same ciank shaft by a pan
of bevel wheels or suitable gearing.
The oil or gasefied liquid is injected by a small pump at a certain part of the
inward stroke of piston into the vaporise which 18 a circular space, suitably
water-jacketed The end of this vaporiser is a cover bolted on, which has outei
and inner cucular walls, the space between being accessible to the flame of a
lamp by means of annular holes cast in outer circular wall of cover, the heat
thus generated heats vapouser and tube to a required degree and after this the
said heat is kept up by means of the explosions
I will describe my invention with reference to the accompanying diawings pre-
mising however that I do not limit myself to the exact details shewn therein.
Figure 1 1s a front elevation and
Figure 2 an end view of an engine arranged or constructed according to my
invention.
1
Figures 345 are details and modifications as hereinafter described
Figure 3 being a longitudinal section through piston and au pumps
Figure 4 a section through piston showing air passages from an pumps to air
chamber in back of piston.
Figure 5 shows the adjustable or expansive cam
Refering to Figures 1 & 2 a 18 the air pump barrels in piston b working
inside line or cylinder c which liner or cylinder ¢ is fastened inside casing d by
hydraulic pressure or other suitable means, the space between line walls and
cylinder walls forming a water jacketing chamber e 18 the vaporiser which 18
bolted on back of casing d the gasefied liquid being compressed in this vaporiser e,
with air to form the explosive mixture. g is the ignition tube screwed in inner
'wall of vaporiser cover for starting motor quicker. This cover f has an annular
space through which the flame of a lamp can play by means of inlet and outlet
The inner wall on which the flame
spaces (shown dotted in Figure 1) cast in.
plays forms a cucular recess or ignition chamber which projects into vapoiis01 €
in which the ignition takes place 18 a lay shaft from which adjustable cams
actuate oil pump k and exhaust valve 7. This same shaft his duiven by bevel o
other suitable gearing. Governors are also worked off same shaft h. On Figure 2
the exhaust valve is worked by a level which is moved by cam n.
Figure 3 shows air pumps a fastened in piston b which cause same banels
to travel up and down, the plungers being suitably fixed to 1ods which are fastened
to brackets on bed Air is forced through valves q by the above action, and into
air chamber y by way of cored holes z. This air being compressed in air chamber y
forces valve m open when exhaust valve / is opened.
Figure 5 shows an adjustable cam n which consists of three discs, the centie dis
being made to slide in or out between the two outer discs To start engine
heat inner wall of vapouser chamber e to a suitable degree by means of a lamp
not attached to the engine. I then give one revolution to engine by a sel
starter in respect of large engines and by hand in case of smaller sizes, the o
pump being actuated from lay shaft, pumps oil from reservoir up pipe and
through spray nozzle 18 a sleeve which passes through cylinder wall and
projects to centie of evlinder forming a check valve which is opened by pressure
of oil from pump and closed by a sping to prevent explosion getting back through

page_text: sprayer into oil in pump pipe. In the end of this sleeve is screwed a sprayer
pointed towards recess or ignition chamber, which projects into vaporiser e, air
being forced into vaporiser at the same time by the piston b
The two constituents being compressed on the highest point of compression,
explode, and thus drives the piston out.
The supply of oil 18 regulated by means of governors actuating an excentric
lever on pump k which controls stroke
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:-
1. The combination and arrangement of parts substantially as hereinbefore
described and illustrated in Figures 1 & 2 of the accompanying drawings con-
stituting an engine to be operated by gas generated from petroleum or other
liquid hydrocarbon.
2 A vaporiser consisting of a circular chamber, water-jacketed, having an
ignition chamber inserted in end which is heated by lamp to the requied degree
of heating necessary for igniting mixture.
3 The arrangement substantially as hereinbefore described and illustrated in
Figure 3 of the accompanying diawings for supplying the au requned through
piston into cylinder for scavenging and charging purposes.
Dated this 26th day of April 1900
F. J. CRINAGE,
Thurlaston, Dunchurch, Rugby.