IMPROVEMENTS IN VALVES FOR CONTROLLING OR REGULATING THE FLOW OR PASSAGE OF STEAM OR OTHER FLUIDS
Year: 1876

page_text: LETTERS PATENT to William Robert Lake, of the Firm of Haseltine, Lake,
& Co., Patent Agents, Southampton Buildings, London, for the Invention of
"IMPROVEMENTS IN VALVES FOR CONTROLLING OR REGULATING THE FLOW
OR PASSAGE OF STEAM OR OTHER FLUIDS." A communication from abroad
by Nathaniel Chase Locke and Alpheus Crosby Locke, both of Salem, Massa-
chusetts, United States of America.
ealed the 15th May 1877, and dated the 5th December 1876
PROVISIONAL SPECIFICATION left by the said William Robert Lake at the
Office of the Commissioners of Patents on the 5th December 1876.
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London. "IMPROVEMENTS IN VALVES FOR CONTROLLING
OR REGULATING THE FLOW OR PASSAGE OF STEAM OR OTHER FLUIDS." A
communication.
The main object of this Invention is the prevention of cutting of the valve
and of its seat by the steam or other fluid passing through the valve when opened.
The said Invention comprises a prolongation or extension of the valve stem
beyond its seat portion, which prolongation is of suitable form and size to closely fit
within and to continuously surround and close the opening through the valve-seat,
and is of such a length that when it is drawn entirely out of the valve aperture to
open said aperture to the passage of steam or other fluid, its seat portion will be
then situated without and beyond the direct course or flow of the fluid through the
valve aperture, thereby securing such seat against injury by the flow of the fluid
through the valve. It also comprises the combination with the above of a seat for
the seat portion of the valve stem, which seat is located behind the valve aperture
outside of and beyond the direct course or flow of the fluid through the said valve
aperture, thereby securing it against injury by the flow of steam or other fluid through
the said valve. There is a partition which has an opening through it for the passage
of steam or outher fluid from the inlet to the outlet opening of the valve chamber.
The valve stem works by its screw through the shell of the said chamber. The
seat for the valve stem is around outside of and behind the valve aperture, and on
this seat the valve stem rests by a disc of truncated form.
An extension or pro-
longation of the valve stem is made of a shape to closely fit within and surround

page_text: and close the periphery of the valve aperture, so that before the steam can pass
through the valve aperture the full length of the prolongation must be drawn out
of and its end made to clear the valve aperture, and if this extension or prolonga-
tion is either long or short the seat portion of the valve stem will be carried
correspondingly a greater or lesser distance away from the valve aperture before the
fluid can pass through the valve aperture, thereby proportionately removing it
from the direct line of the flow or course of the fluid through the valve aperture, and
protecting it against injury by the fluid which passes through the valve aperture.
The peculiar location of the seat about the valve aperture for the valve stem seat
also protects it against injury by the fluid flowing through the valve aperture.
The end of the valve projection is beviled to direct the fluid through the valve
aperture when the valve is opened, and thus increase the protection of the valve
stem seat. A groove or recess is formed between the valve seat and valve aperture.
This recess catches the sediment in the steam or other fluid, and keeps it from
contact with the two seat portions of the said valve.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Robert Lake in the Great Seal Patent Office on the 4th
June 1877.
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London. "IMPROVEMENTS IN VALVES FOR CONTROLLING
OR REGULATING THE FLOW OR PASSAGE OF STEAM OR OTHER FLUIDS." A com-
munication from abroad by Nathaniel Chase Locke and Alpheus Crosby Locke,
both of Salem, Massachusetts, United States of America.
The main object of this Invention is to prevent cutting of the valve and of its
seat by the steam or other fluid passing through the valve when opened; and the
said Invention consists principally of a prolongation or extension of the valve stem
beyond its scat portion; this prolongation is of suitable form and size to closely fit
within and to continuously surround and close the opening through the valve seat,
and is of such a length that when it is drawn entirely out of the valve aperture to
open said opening to the passage of steam or other fluid its seat portion will be
then situated without and beyond the direct course or flow of the steam or other
fluid through the valve aperture, thereby securing such seat against injury by the
passage of fluid through the valve. It also partly consists in the combination, with
the above, of a seat for the seat portion of the valve stem, which seat is located
behind and away from the valve aperture, and therefore outside of and beyond the
direct course or flow of the steam through the valve aperture, thereby securing it
against injury by the passage of the fluid through the valve.
In the accompanying Drawing Figure 1 is a central section of my Invention
with the valve closed. Figure 2 is a similar view of a part of the said valve shown
open.
A represents the globular chamber of a globe valve; B, the inlet; and C, the
outlet passages for the steam or other fluid intercepted by a partition D. The
partition D has an opening E through it for the passage of the fluid from the inlet
to the outlet openings of the chamber A. At the opening E the valve stem is
seated, and this stem works by its screw G through the shell of the chamber
A in the ordinary manner. The sent a for the valve stem F is around, and
outside of and away from the valve aperture E, as shown in the Drawing; on this
seat a the valve stem F rests by its disc b, of truncated form, as shown.
His an extension or prolongation of the valve stem F; this extension H is from
the disc b of the valve stem, and of a form and shape to fit accurately and closely
within and to continuously surround and close the periphery of the valve aperture
so that before the steam or other fluid can pass through the valve aperture the full

page_text: length of the prolongation must be drawn out of, and its end f made to clear the
opening E; and obviously if this extension or prolongation H be either long or
short, the seat portion b of the valve stem F will be carried correspondingly a
greater or lesser distance away from the valve aperture before the fluid can pass
through the valve aperture, thereby proportionately removing it from the direct
line of flow or course of the fluid through the valve aperture and preventing its
being cut or otherwise injured by the steam or other fluid which passes through the
valve aperture. The location above described of the seat a, about the valve
aperture E, for the valve stem seat b also protects it against injury by the
steam or other fluid flowing through the valve aperture. The end of the
valve projection. H is bevelled, as shown; this beveling serves to direct the
flow of steam through the valve aperture when the valve is opened, as described;
and thus increases the protection of the valve stem seat b against cutting or
other injury by steam as above described. G is a groove or recess between the
valve seat a and valve aperture E. This recess g catches the sediment in the steam
or other fluid and retains it and keeps it from contact with the two seat portions
a and b of the said valve.
Having thus fully described the said Invention as communicated to me by my
foreign corrrespondents, and the manner of performing the same, I wish it understood
that I claim,
First. The prolongation or extension of the valve stem seat constructed and
formed to closely fit within and to continuously surround the valve aperture, as
above described and for the purpose specified.
Second. The combination with the prolongation or extension of valve stem seat,
constructed to closely fit within and to continuously surround the valve aperture of
the seat located relatively to the valve aperture, all as above set forth, and for the
purpose specified.
Third. The end of the prolongation of valve stem seat beveled, as above set forth
and for the purpose specified.
Fourth. The combination of the seat of the valve case, constructed with a recess
with the seat of the valve stem so as to leave the recess open and clear when the
seat of the valve stem is closed against the seat a, as above described, and for the
purpose specified.
In witness whereof, I, the said William Robert Lake, have hereunto set my
hand and seal, this Fourth day of June, in the year of our Lord One
thousand eight hundred and seventy-seven.
W. KOB. LAKE.
(L.S.)