IMPROVEMENTS IN CYLINDERS AND IN VALVES FOR USE WITH THE SAME.
Year: 1876

page_text: LETTERS PATENT to John Williams, of Victoria Docks, London, in the County
of Essex, Pattern Maker, for the Invention of "IMPROVEMENTS IN CYLINDERS
AND IN VALVES FOR USE WITH THE SAME.'
27
Sealed the 13th April 1877, and dated the 18th October 1876.
PROVISIONAL SPECIFICATION left by the said John Williams at the Office
of the Commissioners of Patents on the 18th October 1876.
JOHN WILLIAMS, of Victoria Docks, London, in the County of Esssex, Pattern
Maker. "IMPROVEMENTS IN CYLINDERS AND IN VALVES FOR USE WITH THE
SAME."
The improvements in cylinders consist in fitting them with a chamber having open
in lieu of closed ends as heretofore, and in working in combination with such cylinder
and chamber a cylindrical valve placed in the said chamber with the open in lieu of
closed ends, and in thus dispensing with covers, glands, rods, and packing, and so
arranging that the eccentric can be connected direct to the valve by a plain eye
joint and bolt arrangement, greatly facilitating repairs. The cylinder and chamber
is formed in the ordinary way, and the valve has two straight ports right through
it, and the steam is only admitted to the port that is being used, saving thereby loss
from expansion and dispensing with the usual steam chest. The valve can also be
reversed end for end.
The object of my Invention is to obtain simplicity of structure, reduce valve
friction to a minimum, and economise power and lubricating materials.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Williams in the Great Seal Patent Office on the 18th April 1877.
JOHN WILLIAMS, of Victoria Docks, London, in the County of Essex, Pattern
"IMPROVEMENTS IN CYLINDERS AND IN VALVES FOR USE WITH THE
Maker.
SAME.
The improvements in cylinders consist in fitting them with a chamber having
open in lieu of closed ends as heretofore, and in working in combination with such

page_text: cylinder and chamber a cylindrical ram or plunger valve placed in the said chamber,
with open in lieu of closed ends, and in thus dispensing with covers, glands, rods,
and packing, and so arranging that the eccentric can be connected direct to the
valve by a plain eye joint and bolt arrangement greatly facilitating repairs. The
cylinder and chamber is formed in the ordinary way, and the valve has two straight
ports right through it, and the steam is only admitted to the port that is being used,
saving thereby loss from expansion and dispensing with the usual steam chest. The
said ram or plunger is also fitted with an exhaust chamber and the exhaust steam
worked back into the boiler through a convenient orifice or port in its side
corresponding with a port in the chamber. The valve or ram can also be reversed
end for end or turned back to front.
The object of my Invention is to obtain simplicity of structure, reduce valve
friction to a minimum, and economise power and lubricating materials.
So far I have described my Invention as applicable to steam cylinders and valves,
but the said improvements can be readily adapted to hydraulic cylinders, rams, and
valves, also pumps and other purposes.
The Drawing hereunto annexed will serve to illustrate a convenient mode of
performing my Invention.
Fig. 1 is a top plan view; Fig. 2, end view; Fig. 3, a sectional elevanation; and
Fig. 4, a side elevation of open end chamber with plunger valve constructed accord-
ing to my Invention. In all the Figures like letters indicate like parts.
A is the open ended chamber with flanged surface I carrying steam ports E,
and F; B, is the plunger or ram fitted with steam chamber G, and exhaust
chamber D, with orifice leading to boiler as shown; H are jaws on end of the
plunger for receiving a connecting rod, as shown; C is a two-way steam supply.
pipe; J is a space intended for a spring or other packing. The action will be
readily understood, and the improvements may be made of metal.
In witness whereof, I, the said John Williams, have hereunto set my hand and
seal, this Fourteenth day of April, in the year of our Lord One thousand
eight hundred and seventy-seven.
JOHN WILLIAMS. (L.S.)