IMPROVEMENTS IN GAS ENGINES
Year: 1883

page_text: PROVISIONAL SPECIFICATION left by the said Jonathan Pickering at the
Office of the Commissioners of Patents on the 28th July 1883.
JONATHAN PICKERING of Stockton on Tees in the County of Durham
IMPROVEMENTS IN GAS ENGINES
My invention relates to improvements in Gas Engines whereby the gas and air
are better regulated to the cylinder than at present and the force of the explosion
is regulated in proportion to the work required to be done.
The gas supply is controlled by a Governor suitably constructed for that
purposo
The admission ports or passages are formed in a rotary valve which is also
worked in conjunction with a disc valve having openings for the proper admission
of the gas and air. these are fitted to either one or both ends of the cylinder-These
valves are arranged and constructed to work by hand so that an amount of power
can be applied to the piston to assist the engine in starting instead of depending
upon the turning of the fly-wheel, as is usually done
The rotary valve is advantageous in preventing in a great measure undue
pressure or strain which arises with the slide valves at present in use for the like
purpose
The valves may be considered as divided into four parts-first, the inlet-second
the mixing of gases, third explosion, fourth, exhaust.
In the divisions round the disc valve there is an opening or passage from the
atinosphere communicating with an opening to the cylinder-these openings or
passages are made free to each other by the rotary valve
When the piston is receding gas and air are drawn into the cylinder at the same
time-On the return stroke the gas and air are thoroughly mixed and incorporated
and not kept with greater intensity at one part than another.
The lighting next takes place through an aperture grooved in the valve for that
purpose-The explosion will next follows propelling the piston to its full limit then

page_text: immediately the piston returns, there is an opening from the cylinder to the
exhaust through the valves-this completes the revolution of the valve-whilst the
engine has performed two revolutions
My invention relates also to improvements for cooling the cylinder by forcing a
constant stream of water through a pump, and not depending as hitherto on a
syphon for circulation by heating the water to make a current-This improvement
reduces the heat of the cylinder effectually.
My improvements consist essentially in adopting a rotary and disc valves
with means for working the same by hand for starting, and the means described
for cooling the cylinder more effectually than at present is the case in gas motor
engines

page_text: the said Jonathan Pickering in the Patent Office on the 28th January
1884.
JONATHAN PICKERING of Stockton on Tees in the County of Durham
"IMPROVEMENTS IN GAS ENGINES"
My invention relates to Improvements in Gas engines whereby the gas and air
are better regulated to the cylinder than at present and the force of the explosion
is regulated in proportion to the work required to be done
The gas supply is controlled by a Governor fig. 2 A suitably constructed for that
purpose
The admission ports or passages are formed in a rotary valve figs: 5 and 6
which is also worked in conjunction with a disc valve figs. 7 and 8 having openings
for the proper admission of the gas and air;-these are fitted to either one or both
ends of the cylinder.
Those valves are arranged and constructed to work by hand as shewn, B, so
that an amount of power can be applied to the piston to assist the engine in
starting instead of depending upon the turning of the fly-wheel as is usually done.
The rotary valve is advantageous in proventing in a great measure undue
pressure or strain which arises with the slide valves at present in use for the like
ригроле
The valves may be considered as divided into four parts-first the inlet-second
the mixing of gas and air, third explosion, fourth exhaust
.
In the divisions round the disc valve there is an opening or passage from the
atmosphere communicating with an opening to the cylinder these openings or
passages are made free to each other by the rotary valve.
When the piston is receding gas and air are drawn into the cylinder at the same
time On the return stroke the gas and air are thoroughly mixed and incorporated
and not kept with greater intensity at one part than another.
The lighting next takes place through an aperturo C. 1 in rotary valve and
through a groove in the disc valvo E for that purpose.-The explosion will follow
propelling the piston to its full limit, then immediately the piston returns there is
an opening from the cylinder to the exhaust through the valves C. D at c. 2 and
d. 2-this completes the revolution of the rotary valve. whilst the engine has
performed two revolutions.
My invention relates also to improvements for cooling the cylinder by forcing a
constant stream of water through a pump as shewn on Fig 2 at F and not depending
as hitherto on a syphon for circulation by heating the water to make a current-
This improvement reduces the heat of the cylinder effectually.
My improvements consist essentially in adopting a rotary and two disc valves
with means for working the same by hand for starting and the means described
for cooling the cylinder more effectually than at present is the case in gas motor
engines.
Fig: 1 is longitudinal section of cylinder with a section of air valve G which is
worked by a cam shewn in Fig 2 at H and levers I and J-The circulating water
is shewn with inlet pipe K from bottom of tank L the water circulating through a
series of partitions K1, K2 K3 and out at M to pump and delivered at N to top
of tank. It should be observed that Fig: 1 shows a series of annular partitions as
section Fig: 4, and Fig. 3 shows circulating partitions longitudinally
Having thus described the nature of my invention and in what manner the same
is to be performed I wish to remark that I do not limit myself to the precise details

page_text: herein given as they may be varied and modified without departing from the main
features of my invention. I claim;―
1 Improvements in gas motor engines with rotary and dise valves substantially as
hereinbefore described and shewn on the drawings.
2 The automatic regulation of gas with governors substantially as herein before
described and shewn on the drawings
3. The improvements in circulating partitions annularly and longitudinally for
effectually cooling cylinders of gas motor engines as hereinbefore described and
shewn on the drawings
4. Improvements in applying a pump (force or centrifugal) for giving immediato
circulation to the water as soon as the engine commences to work substantially as
herein before described and shewn on the drawings.
In-witness-whereof I-the said Jonathan Pickering have hereunto set my hand.
and seal this twenty fifth day of January in the year of our Lord one thousand
eight hundred and eighty four.
JONATHAN PICKERING (L.S.)