Improvements in Pistons, applicable to Steam-engines, Motors, Valves, and other purposes for which Pistons are required.
Year: 1898

page_text: Date of Application, 12th Oct., 1898
Complete Specification Left, 24th June, 1899-Accepted, 12th Oct., 1899
אמנם 10
Complete Specification Left, 24th June, 1899-Accepted, 12th Oct., 1899
Improvements in Pistons, applicable to Steam-engines, Motors,
Valves, and other purposes for which Pistons are required.
I, WILLIAM WALTER HALL, 2, Hercules Road, Lambeth, London, S.E., do
hereby declare the nature of this invention to be as follows:-
use
The improvements consist in supplementing the present spring-ring in
by a circumferentially continuous ring in one solid piece of suitable metal which
I call a "floating-ring" to be fitted to either or both ends of the solid piston,
or between the rings when applied to the junk-ring type of piston in such a
manner that it shall make a joint with one or other more spring-rings on one
or both sides which being free to move diametrically in relation to the body of
the piston so as to maintain its continuity to the bore of the cylinder without
being affected by the wear & lineability of the piston-rod and parts of the motion
in connection therewith.
I claim that this is an improvement for the following reasons; viz.:.
:-greatly
lessens the escape of steam from one side of the piston to the other when slightly
worn, thereby decreasing the cost of fuel and encreasing the efficiency of the
machine, also decreasing cost of repairs, low first cost being less than that of one
spring-ring. In renewing the rings the stock sizes of spring-rings can be used,
the side wear being taken up by extra width of new floating-ring. This is an
economy as spring-rings are expensive in odd sizes. There will also be more even
wear of the bore of cylinder. Where sandy or corrosive water is used as in
the case of pumps the frequent necessary repairs & renewals are by my improved
piston obviated.
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Improvements in Pistons, applicable to Steam-engines, Motors,
Valves, and other purposes for which Pistons are required.
WILLIAM WALTER HALL, 2, Hercules Road, Lambeth, S.E., Engineer, do here-
by 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:-
A piston having two or more split-rings A will with my invention have a
third or floating-ring A¹ (not split) placed in between them-this middle ring
of mine is turned to exactly fit the diameter of the cylinder, but the piston
block B is smaller in diameter than the inside diameter of my floating ring at C-
Price S1

page_text: thus giving a clearance for the piston to play against the sides of the cylinder,
without bearing on the said floating ring A¹.
The dotted line C, in Fig. 3 represents the outer circumference of the piston
head. The dotted line D in Fig. 3 represents the inner circumference of the float-
ing-ring..
The dotted line E in Fig. 3 represents the outer diameter of the piston-block,
and shews the clearance between the floating-ring and the piston-block.
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;-
The floating ring at A¹. Fig. 1 substantially as shown in the drowing