Year: 1887

page_text: Date of Application, 17th Oct., 1887
Complete Specification Left, 17th July, 1888
Complete Specification Accepted, 31st Aug., 1888
JOHN MIDDLETON Engineer, and Grain Merchant 16 Hope Street Glasgow Lanark-
shire Scotland do hereby declare the nature of this invention to be as follows:-
A New or improved Gas Moter Engine, having a Cylinder, a piston; a flywheel,
a mainshaft with a drum or its equivalent, fixed on the shaft, the shaft being parallel
to the Cylinder, the drum having an endless Grove, or Guides path formed on it, or
in it, at angles to the shaft, and going round the drum in a zig zag shape, the turns
of the Grove or path or Guides, being towards, or near the ends of the drum, a pin
from the slipper guide, or crosshead or part of such guide or crosshead, (as may be
used,) is engaged in the grove, or path, on or in the drum.
A Charge of Gas and air, or other combustible Vapour, or, and Matter and air, is
drawn, or forced into the Cylinder, the piston moving outwards, in the Cylinder, and
on the return stroke of the piston, the charge is compressed in the Cylinder, in a
space left by the short stroke of the piston, the length of stroke, being controlled by
the Grove or Guides on or in the drum, and on the charge being ignited, the
consequent expansion of it, urges, or drives the piston, towards the other end of the
Cylinder, the Crosshead or Slipper guide pin, travelling in parallel line to that of
the shaft and drum, the Grove or Guide path being at angles thereto, the
drum is forced to revolve, and consequently the shaft, and flywheel also.
When that outstroke is completed, the piston returns, by the power stored in the
flywheel, and by the shape, or extension of the Grove or Guide path, on or in the
drum, the piston is caused to reach the end of the Cylinder, or near thereto, and so
expels the products of Combustion, from the Cylinder.
The Grove or Guide path, on, or in the drum, being so made that it causes the.
piston to have a long stroke inwards, in succession to a shorter instroke.
My Invention is also applicable to Engines having one or more Cylinders, and
either double acting, or otherwise, and using Gas or Combustible Vapour, or
Petroleum, or other Combustible Matter and air, or a combination of them.
Dated this Fifteenth day of October 1887.

page_text: I JOHN MIDDLETON 16 Hope Street Glasgow, in Lanarkshire, Scotland 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 :-
In Gas Motor Engines, and Petroleum Motor Engines, it is customary, that a
Crank, or Cranks, are used for transmitting power to the Mainshaft, and flywheel,
by my invention, I dispense with those cranks, or crank, and I make, my new, or
improved Motor Engine, having a Cylinder C, and a piston working in the Cylinder C,
a fly wheel, F W, a Crosshead H, a Mainshaft S, and a drum or its equivalent fixed
on the Shaft S, this shaft. runs in parrallel line, to the line of the Cylinder C, the line
of the Shaft S, and the line of the Cylinder C, being parrallel to each other, the
Drum D, having an endless Grove, or Guidepath P, formed on it, or in it at angles
to the Shaft S, and going round the Drum D in a zig zag shape, the turns of the
grove or guidepath P, being towards, or near the ends of the drum D, the grove or
guidepath P, being so shaped, as to cause the piston to have different lengths of
travel, preferrably, or it may be arranged otherways, or so as to cause the piston to
always travel (the one distance, always) the same distance, either way.
A pin from the Crosshead, or Slipper Guide H, or part of such guide, or Cross-
head, (as may be used) is engaged in the Grove or guidepath P this Grove or path
can be made suitable for transmitting, one, or two, or more impulses, from the
piston, to the Shaft S, the piston being connected to the Crosshead, or Slipper
guide H, the drum D, can be made, either in one, or more pieces, or parts, and either
solid, or hollow, in whole or in part.
There are several ways, already known, by which the charge, or charges, of Gas
and air, or Petroleum, or other, combustible matter, or Vapour, and air, either
seperatily, or a combination of any of them, can be used in this new, or improved
Motor Engine.
One way is, a charge of Gas and air, or other Combustible Vapour, or, and matter,
and air, is drawn, or forced, into the Cylinder C, the piston moving outwards in the
Cylinder, and on the return stroke of the piston, the charge is compressed, in the
Cylinder C, in a space left by the short stroke of the piston, the length of stroke
being controlled by the Grove, or guidepath P, and when the charge is then ignited,
by means of a hotpipe, or any other suitable means, the consequent expansion of
the charge, urges, or drives the Piston towards the other end of the Cylinder C.
The pin of the Crosshead or Slipperguide H, being engaged in the angular path,
or Grove P, the Drum D, is forced to revolve, and consequently the Shaft S, and
the flywheel F W, also revolve with it. When that outstroke is completed, the
piston returns, by the power stored in the flywheel F W, and the shape, or extension
of the grove or guidepath P, on, or in the drum D, the piston is caused to reach the
end of the Cylinder C, or near thereto, and so expells the products of combustion

page_text: from the Cylinder, and the opperations are repeated. This mode of working, can
give one impulse, for each revolution of the flywheel F W, but if the Engine be
made, double acting, by using both ends of the Cylinder C being closed and supplied
with suitable inlet, and exhaust valves, and igniting arrangements, (which are too
well known to need being here described), 2 impulses can be got, for each revo-
lution.
Another mode of working, can be, by using the charge in a compressed state, or
condition, either partially, or wholely, before it enters the Cylinder, or any chamber,
or receiver, or passage, which is in communication with the Cylinder C, or con-
pressed by, or in the front end of the cylinder, and the piston working therein,
before the charge is put into communication with the back end of the Cylinder,
the back end of the Cylinder, is either end, but in any case, I mean the back end,
to mean, the end in which the Combustion of the charge, in whole, or in part, takes
place, the ignition, and consequent expansion of this previously compressed charge,
urges, or drives the piston, towards, or near the other end of the Cylinder, and on
the return stroke of the Piston, it expels the products of Combustion from the
Cylinder, and the operations are repeated, and by this mode, or Cycle of working,
the flywheel can receive impulse, twice, during each revolution, when the Engine is
single acting, that is when the piston gets one impulse for every two single strokes
of the Piston, or if the Cylinder, is double acting, and the piston getting impulse,
at every single stroke, alternately at each end of the Cylinder, then there would be,
4 impulses, for every and each revolution of the flywheel, and the Engine can be
made, to give, or have, more than 4 impulses, for each revolution of the flywheel, by
forming the Groove, or Guidepath P, and other parts of the engine, suitable thereto,
altho. 2, or 4, impulses for each revolution of the flywheel, are, in my opinion suffi-
cient. GG, are guides, fastened on the bed of the Engine. M B, are bearings, for
the Shaft S.
Having now particularly described, and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare, what I
claim is,
1. In a Gas Engine, or Petroleum Engine, or an Engine, the charge, or charges
of which, are of Combustible nature, I claim the putting on, or, and, the using, of a
Drum D, on the Shaft S, the Drum D, to be made of suitable material, and to be
either solid, or hollow, in whole, or in part, and of as many parts, one, or more, as
may be considered suitable, (on the Shaft S) the drum D, to have on it, or in it, or,
and partly on it, and partly in it, a Grove, or Guidepath, of such dimensions and
form, or arrangement, as may be considered suitable, or, as herein described, and this
Grove, or Guidepath P, can be formed in such ways, that it controlls, or admits of
the piston, in the Cylinder C, having different lengths of travel, or, to travel always
the same distance, or as may be arranged, or found suitable, for purposes named, or
others.
Dated this 16th day of July 1000