Improvements in Steam Engines.
Year: 1890

page_text: Date of Application, 28th June, 1890
Complete Specification Left, 26th Mar., 1891-Accepted, 6th June, 1891
PROVISIONAL SPECIFICATION.
Improvements in Steam Engines.
I, JOHN PITT BAYLY, of 18 Fulham Place Paddington, in the County of
London, Patent Agent, (a communication to me from abroad by Edmeston
Thomas of Kansas City, Jackson County, Missouri, U.S.A., Inventor,) do hereby
declare the nature of this invention to be as follows:-
By this invention, the steam engine cylinder having the usual steam and exhaust
ports is provided with a steam chest of usual construction. The lid or plate
covering the steam chest has a recess sunk in its under side of sufficient depth to
receive a preferably rectangular flat plate which is placed upon a sheet of com-
pressible packing, also contained within the recess. This plate and packing is
secured in position by suitable bolts or screws which pass through the plate and
compressible packing, and are provided with nuts upon the outer surface of the
chest covering or lid. These nuts are preferably locked against loosening by
another nut screwed upon them over the bolts. The slide valve is provided with a
double face, one of which bears upon the valve surface of the cylinder, and the other
upon the plate in the steam chest cover.
By this construction, the pressure of the steam upon the slide valve is prevented,
and the valve works more freely in consequence.
Dated this 28th day of June 1890.
J. P. BAYLY,
Applicant.
COMPLETE SPECIFICATION.
Improvements in Steam Engines.
I, JOHN PITT BAYLY, of 18 Fulham Place, Paddington, in the County of
London, Patent Agent, do hereby declare the nature of this invention (a com-
munication to me from abroad by Edmeston Thomas, of Kansas City, Jackson
County, Missouri, U.S.A., Inventor,) and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:
My invention relates to improvements in adjustable valve-plates for steam-chests;
and it consists in the novel construction and arrangement hereinafter set forth and
described.
In the drawings, which illustrate the manner of carrying out my invention,
Figure 1 is a central longitudinal section through the steam-chest, showing part
of the steam-cylinder in part.
.
Fig. 2 is a perspective view of the steam-chest covering D; and
Fig. 3 is a sectional detail view of said covering D, showing the manner in which
the adjustable plate F is secured in position.
Referring to the drawings by letter, A. represents a steam-cylinder constructed
in the ordinary manner, and which is provided with suitable steam-channels a¹ for
the passage of steam.
C is a steam-chest having a suitable covering D secured thereon in a suitable
manner, said covering D having a recess sunk in the under side a sufficient depth to
receive the plate F and compressible packing E, said plate F being secured and
held in position by a suitable bolt or screw g. Said bolt g, passing upward through
the plate and packing F and E is secured in the chest-covering D by a suitable
nut h

page_text: G is a large acorn-shaped nut provided with a cavity g', which fits over bolt g.
Said nut G is provided with threads, which secure it rigidly in the chest-covering D,
thus causing it to bear securely against nut h, holding the same in position. Being
screwed down in this manner, the nut h cannot work loose in any way, and the
plate F is thereby held in place.
d is the recess in said chest-covering D, in which said plate F is secured. The
packing E is to keep the steam from passing between the adjustable plate F and
steam-chest covering D.
H is a valve provided with a valve-rod 1, which is properly secured in said valve H.
This valve-rod I operates through the steam-chest fittings K, which are constructed
in a proper manner.
Mis the lubricating tube, on which is secured the oil-cup for lubricating the
valve H.
Having this adjustable plate constructed in the manner described, it may be
adjusted to the valve when necessary, the packing E being sufficient to cut off the
passage of steam around said plate.
Having now particularly described and ascertained the nature of this my said
invention, and in what manner the same is to be performed I declare that what
I claim is :--
1. The combination with the steam-chest cover recessed in its inner face, of the
adjustable valve-plate secured thereon, the packing interposed between said plate
and cover, the bolts and nuts for securing the said plate in the recess, and the nuts
for locking the nuts h in place, all arranged and adapted to operate substantially
as shown and described.
2. The combination, with the steam-chest cover D, recessed as at d, of the valve-
plate F, the compressible packing E, the bolts g, nuts, and nuts g¹, all arranged
and adapted to operate substantially as shown and described.
nail
J. P. BAYLY,
Applicant.