IMPROVE- MENTS IN GAS MOTOR ENGINES
Year: 1882

page_text: LETTERS PATENT to Thomas Ashbury Herbert Sumner William Lees and
Richard Withington Bromiley Sanderson all of Manchester in the county of
Lancaster trading as Ashbury Sumner & Coy for an Invention of IMPROVE-
MENTS IN GAS MOTOR ENGINES.
COMPLETE SPECIFICATION filed by the said Thomas Ashbury, Herbert
Sumner, William Lees, and Richard Withington Bromiley Sanderson at the
'Office of the Commissioners of Patents on the 31st October 1882.
THOMAS ASHBURY, HERBERT SUMNER WILLIAM LEES, and RICHARD
WITHINGTON BROMILEY SANDERSON, all of Manchester in the County of Lancaster
trading as Ashbury Sumper & Co "IMPROVEMENTS IN GAS MOTOR ENGINES"
On the twenty first day of March in this present year 1882, Herbert Sumner
of the Firm of Ashbury Sumner and Co of Manchester, Engineers, applied for and
obtained Letters Patent for an "Improved Gas Motor Engine" N° 1360.-The
Present invention is for "Improvements" (not in any detail of that engine)
But for a combination of two or more of those engines as and for the purposes
hereinafter set forth.
Our first arrangement is to put two of the before named engines face to face on
one bed, and actuating two seperate and opposite cranks on one shaft so that theso
two motors acting or giving their impulses alternately, we have thereby one
impulse of the crank shaft with its fly-wheels and pulleys every revolution, instead
of every alternate revolution, as in a single cylinder engine.
Another great advantage obtained by this arrangement is, that being thus
coupled together.exactly opposite each other, both as regards time and direction
of motion, there is an exact balance of reciprocating parts, thus relieving the
engine from Strain and Oscillation due to heavy reciprocating parts in quick
motions.
The second arrangement consists in placing two or more of these Motors side
by side, but with the cranks an equal distance apart, as regards the path or circle
in which they Travel, so as to thereby ensure perfect balance of reciprocating parts

page_text: revolutions Of Gre Crank SMRT.
This latter arrangement applies equally to both vertical and Horrizontal engines
whether they have two or more cylinders combined.
Gas Motor Engines hitherto have been made with a single cylinder only, or as a
Single Machine and altho in some cases they have been made to give an impulse
once every revolution, they have been wanting in perfect balance of reciprocating
parts, and consequently have absorbed much of their own power, which should be
given off at the crank shaft, In addition to the annoyance and ill effects due to
the Oscillation, unfitting them in many instances for use on upper floors or in weak
buildings.
Referring to the accompanying Sheet of Drawings and the several figures
marked thereon, it will be observed that no detail references are made, nor are any
required.
Figure. 1. is an Elevation of two of our engines coupled together face to face,
one in section and the other, outside view.
Figure. 2. is an end Elevation.
Figure. 3. is a Plan.
Figure. 4. is a cross section through frame at A. B.-
It will be here observed that we can use one side shaft for working the valves
and governors of both cylinders driven by one pair of screw-gear Wheels.
Having described our invention and the several ways we apply it we wish it to
be understood that what_wo claim is.
First. The combination of two or more "Gas-Motor Engines" with cranks
equadistant or at any convenient angle in the circle of Traverse, substantially as
and for the purposes hereinbefore set forth.
Second, The arrangement of one side shaft for driving the Valve Gearing and
Governors to each pair of cylinders, substantially as and for the purposes herein-
before set forth.
Third, The arrangement of duplicating Gas Motor Engines directly opposito or
side by side each other, on one bed common to both insuring thereby perfect
freedom from oscillation by balancing reciprocating parts substantially as and for
the purposes hereinbefore set forth.
In witness whereof we the said, Thomas Ashbury, Herbert Sumner, William
Lees and Richard Withington Bromiley Sanderson, have hereunto set our
hands and seals this twenty seventh day of October in the year of our
Lord One thousand eight hundred and eighty Two.