Improvements in Steam or Compressed Air or other Fluid Engines.
Year: 1890

page_text: Date of Application, 7th July, 1890
Complete Specification Left, 6th Mar., 1891-Accepted, 18th Apr., 1891
PROVISIONAL
SPECIFICATION.
Improvements in Steam or Compressed Air or other Fluid Engines.
WILLIAM TURNER LORD, Stamford Brook Villa, Hammersmith, London, W.,
Architect, do hereby declare the nature of this invention to be as follows :-
My improvements consist in the formation of a trunk piston containing an
oscillating or other valve, the piston having one or more tubes or spindles attached
thereto, passing through steam tight ways in cylinder cover, into one or more
chambers for the supply or transmission of steam.
Also for the formation of steam receivers in bodies of trunk pistons, or in the
oscillating valve itself for the transmission of steam from one cylinder to another
for further expansion, also the use of a relief valve between steam chest and receiver
or high pressure cylinder to prevent excessive back pressure.
Dated this 7th day of July 1800
WM. TURNER LORD.
COMPLETE
SPECIFICATION.
Improvements in Steam or Compressed Air or other Fluid Engines.
WILLIAM TURNER LORD, Stamford Brook Villa, Hammersmith, London, W.,
Architect, 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 :-
By my invention I form engines, with trunk pistons, formed to contain cylindrical
or other shaped oscillating valves, having ports and passages, and the interior of
which is arranged, to receive the steam from the high pressure cylinder, and later,
to allow it to enter the low pressure cylinder, and afterwards, to allow it to pass to
the exhaust passage or to other cylinders for triple or quadruple expansion.
Upon the trunk piston I place a tubular extension for the conveyance of steam
from the steam supply or chest to the valve for distribution, or two separate tubes
may be used, passing through steam tight ways, into separate compartments one
being supply and the other exhaust.
I find it advisable to place a relief valve RV between the high pressure cylinder
and the steam box, to relieve any excessive back pressure on the return stroke.
One arrangement of my invention is illustrated in the drawing which represents a
single acting compound engine in which 1 is the cylinder containing the trunk
piston 4. 2 is an upper cylinder having an inner one 3 attached to it, and which
serves the purpose of a steam chest and a piston in the high pressure cylinder
which is formed by the extension 5, upon the top of the trunk piston 4. In the
bottom of 3 is an opening, which may continue up as a sleeve, or as in the drawing
as a gland through which the tubular extension T works..
e,
It will be seen that steam passes through the openings L in T through d, A, B,
and into the high pressure cylinder H. P. C. and when the valve O. V. is moved
by the connecting rod M on the return stroke D is brought opposite e and the
steam is transferred from H PC through e D into the interior of OV during
which time L P C is open to exhaust through the ports & passages fE E E NO.
Upon the throw of the crank on the top of the stroke à A again communicate,
and the steam in the reservoir O V passes through C and g into the low pressure
cylinder L P C.
Fig. 2 shews another form of steam inlet. Fig. 5 shews the supplemental exhaust
passages, and Figs. 4, 6, 7 and 8 different views & forms of the combined valve and
reservoir.

page_text: In some cases communication is opened between O V and a chamber in the trunk
piston to increase the size of the reservoir.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
1. A trunk piston having one or more tubes attached thereto as steam passages,
and containing an oscillating valve as herein described.
2. A trunk piston as described and containing an oscillating valve so constructed
as to form valve and steam reservoir.
3. The combination of the foregoing parts with a relief valve in piston or cylinder
as herein described.
4. The combination of parts substantially as herein set forth.
Dated this 5th day of March 1891.
WM. TURNER LORD.