IMPROVEMENTS IN VALVES
Year: 1886

page_text: WILLIAM LOCKWOOD, Engineer, Talbot Place, The Park, Sheffield do hereby
declare the nature of my invention for IMPROVEMENTS IN VALVES and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
.
My invention, has for its object, the improvement of valves in such a manner
that, they will have the maximum amount of outlet or exit space with a minimum
amount of lift. This is accomplished by the combination of a perforated valve lid,
which may be either, flat, bent, curragated, or spiral and seatings respectively
adapted. And I purpose to use one or more of the following adaptations according
to various conditions of working. And in order that the same may be clearly
understood, I shall proceed to more particularly describe the same, and shall refer
to the annexed sheet of drawings and figures of reference. Figures Nos 1 to 8
represent, the Plans Sections and Elevations of the aforesaid adaptations. Figs 1
and 2 shew a seating perforated by convenient spaces, and a flat lid, perforated by
similar spaces. The spaces in the lid are somewhat less than the spaces in the
valve seating, so that when the valve opens part of the liquid, air, or gas, escapes
through the spaces or perforations in the valve lid, and the remainder in the usual
manner.
The
Figures 3 & 4 represent, an adaptation suitable for higher pressures, a seating
having convenient perforations and a perforated valve lid so arched over each of
these spaces, that, when the valve is closed, by the projecting portions of the valve
lid being in contact with the valve seat there is no communication between the
perforations in the valve seat and any portion of the valve seat, outside the afore-
said projections. When the valve is open part of the liquid, air, or gas, escapes
through the perforations in the lid and the remainder in the usual manner.
arched form of this lid gives increased strength to the lid. To clearly explain this
form of lid, I have shewn Fig. 9 which is a sectional development of part of valve,
shewing in detail the aforesaid arrangement. Figs 5 and 6 illustrate, an adapta-
tion, a seating composed of alternate circular rings, and spaces, in conjunction with
a perforated, corrugated, valve lid. Every lower corrugate fits into and makes
joint, upon the edges of one of the aforesaid circular spaces and the upper corrugate
is pierced by suitable perforations. When the valve is open part of the liquid,
air, or gas, escapes through the perforations in the valve lid, and the remainder in
the usual manner.

page_text: Figures 7 and 8 illustrate, a seating having a perforation of a spiral form in
conjunction with a spiral coil, which in section may be round as shewn, square, flat,
triangular or oblong, each end of the spiral coil to be passed through space in
seating and have nut or collar placed upon it, so that the coil is free to lift but
unable to become detached from the valve seating when working. When the valve
is open, the liquid, air, or gas will escape through the spiral space, and outside and
between the spiral coil. This spiral coil and seating may be made either a flat or
conical spiral.
In each of these adaptations the valve lid will be prevented from rotating, by
means of a square hole and spindle or other suitable arrangement. Every part
of these valves may be made of any material adapted for the purpose. And the
valve lids may be made of flexible or other material.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed, I declare that what
I claim is
The herein described combination of a perforated valve lid or its equivalent,
with seating of a suitable form, for the purpose of reducing the lift of the valve
lid and obtaining the greatest amount of outlet or exit space, no claim being made
for any one part taken seperately and used for any other purpose but only when
combined with the other or equivalent parts substantially as, and for the purposes
described and indicated.
·
Dated this twenty sixth day of February in the year of our Lord one thousand