IMPROVEMENTS IN ROTARY ENGINES
Year: 1873

page_text: LETTERS PATENT to George Haseltine, of the "International Patent
Office," Southampton Buildings, London, Doctor of Laws, for
the Invention of "IMPROVEMENTS IN ROTARY ENGINES."-A com-
munication from abroad by William Van Vleck Lidgerwood, of
COMPLETE SPECIFICATION filed by the said George Haseltine at the
Office of the Commissioners of Patents, with his Petition and
Declaration, on the 15th October 1873, pursuant to the 9th Section.
of the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
HASELTINE, of the "International Patent Office," Southampton Build-
ings, London, Doctor of Laws, send greeting.
WHEREAS I am in possession of an Invention for "IMPROVEMENTS
IN ROTARY ENGINES," and have petitioned Her Majesty to grant unto me,
my executors, administrators, and assigns, Her Royal Letters Patent
for the same, and have made solemn Declaration that it has been

page_text: communicated to me from abroad by William Van Vleck Lidgerwood,
of Morristown, New Jersey, United States of America.
NOW KNOW YE, that I, the said George Haseltine, do hereby declare
that the following Complete Specification, under my hand and seal,
fully describes and ascertains the nature of the said Invention, and
in what manner the same is to be performed, in and by the following
statement, reference being had to the accompanying Drawing forming
a part of this Specification :—

page_text: '
provided the inner edges of the pistons with steel bearings or shoes I
and 4; either form or any other suitable form may be used which
will accomplish the purpose. Three or more pistons may be used.
H in Figure 3 represents a ring packing arranged, so that when in
position its periphery is opposite that of the cylinder B, B. This packing
is adjusted by steam or suitable springs not shewn.
The bearings for the shaft are increased by extending the hub G into
the engine casing.
In the modification of this Invention illustrated in Figures 5 and 6
A represents a cylinder, which is provided with two steam-tight heads.
Within the cylinder A is placed the wheel B, which is provided with a
rim made as deep as the cylinder is wide between its heads. This
wheel B is provided with a hub at its centre, and through this hub
passes a shaft c. Between the hub and the rim of the wheel is an
annular cavity in each face of the wheel, and within these cavities are
placed the rim wheels or loose rings D, D, one in each cavity. The
wheel B is smaller in diameter than the inner diameter of the cylinder A,
and is placed eccentrically in the said cylinder, so that when in position
its periphery lightly touches the inner periphery of the cylinder. The
shaft of the wheel B has its bearings in suitable openings in the heads
of cylinder A. The said wheel has three equidistant openings cut
through its rim from one side to the other, and in these openings three
pistons E, E, E, are placed. These pistons are just long enough to
reach from the inner periphery of the cylinder to the periphery of
the rim wheels D, so that the rings D are always concentric with the
cylinder A. A metallic spring is placed around the periphery of the
rings D, D, and these springs fit snugly against the inner end of the
pistons.
The purpose of the said rim wheels or rings D is to keep the pistons
in their proper places, while the inner periphery of cylinder A forces
them in; and the object of the springs around the wheels D is to take
up any slack in the pistons and keep them snugly in position.
The periphery of the cylinder A has through it two steam
openings H, H, one for receiving and the other for discharging steam.
It will readily be seen that the aforesaid rim wheels, although they
revolve, can never change position in relation to the inner periphery of

page_text: the cylinder, as they are permanently separated from the said inner
periphery just the length of the pistons.
Having thus fully described the said Invention as communicated to
me by my foreign correspondent, and the manner of performing the same,
I wish it understood that I claim,―
First. The combination of the loose rings with pistons in a rotary
engine, the inner cylinder of which is eccentric to the outer cylinder, as
herein specified.
Second. The springs in combination with the rings and pistons in an
engine, the outer and inner cylinders of which are eccentric to each 1
other, as herein specified.
1
Third. The combination of the loose rings with pistons having shoes,
substantially as and for the purpose set forth.
In witness whereof I, the said George Haseltine, have here-
unto set my hand and seal, this Fifteenth day of October, 1
in the year of our Lord One thousand eight hundred and seventy-
three.
Witness,
H. J. NOONE,
8, Southampton Buildings,
London.
GEORGE HASELTINE. (L.S.)