REGULATOR FOR SUPPLY OF GAS TO MOTOR ENGINES
Year: 1885

page_text: I, HENRY PERCY HOLT of Openshaw Manchester in the County of Lancaster,
Engineer, do hereby declare the nature of my invention for REGULATOR FOR
SUPPLY OF GAS TO MOTOR ENGINES" 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 a regulator for supply of gas to motor engines, con-
sisting of a vessel covered by a flexible diaphragm, which, by moving a valve,
determines the flow of gas into the vessel, the movement of the diaphragm and
valve being controlled by a cataract or fluid resistance which prevents sudden and
violent fluctuations. Fig. 1 of the accompanying drawings is a vertical section and
Fig. 2 is a front view (with the diaphragui supposed to be removed) of one form of
regulator according to my invention; Figs. 3 and 4 are corresponding views of a
similar apparatus somewhat modified in the form and arrangement of parts.
Referring first to Figs 1 and 2, A is the inlet for supply of gas which on its way
to the outlet B, has to pass through a vessel C which is covered on one side by a
flexible diaphragm D, secured on the face of C by a ring d bolted thereto. The
diaphragm D is held at its middle between two discs e to the inner of which is
attached a plunger E fitted to work somewhat loosely within a cylindrical boss F.
Through the plunger E there is a small passage h for gas which can be more or
less throttled by means of an adjusting screw valve H. From a recess G in one
side of the plunger E a wire or rod I extends up into the hollow of a valve J.
When the diaphragm is in the position shewn in Fig. 1, the rod I is nearly upright,
holding open the valve J. Should the supply of gas at A exceed the delivery at B
the diaphragm is bulged outwards and the rod I then takes an inclined attitude
such as is indicated by the dotted lines I, allowing the valve J more or less to
close, throttling or arresting the supply. As the plunger E has to accompany the
diaphragm in its movements, it operates in the cylinder A as the piston of a
cataract, preventing sudden or violent movements, its controlling power being
adjusted by more or less throttling the passage h by means of the screw valve H.
In the arrangement shewn in Figs. 3 and 4 (in which the same Letters are
employed to indicate parts corresponding with those in Figs 1 and 2), the gas
valve J is attached to the inner disc c of the diaphragm and its cylindrical interior
works on the stationary plunger E. In this case, the bulging of the diaphragm,

page_text: by bringing forward the larger part of the cone of J, more or less throttles the
annular passage j, which becomes entirely closed when the diaphragm is bulged to
such an extent as is indicated by the dotted lines D¹.
Instead of employing a conical gas valve governing an annular passage as in
Figs 3 and 4, a slide valve may be arranged as shewn in Fig. 5. In this case the
gas from A enters the hollow of the stationary cataract plunger E and issues
through lateral ports p q formed in it and in the moveable cataract cylinder J,
these ports becoming more or less closed by the bulging of the diaphragm.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
For regulating supply of gas to motor engines and preventing fluctuation in the
service pipes, the combination of a flexible diaphragm, covering the side of the
regulator, with a valve and cataract substantially as herein described and illustrated
by the drawings.