Improvements in Gas Governors.
Year: 1889

page_text: Date of Application. 21st May. 1889-Accepted, 22nd June, 1889
COMPLETE SPECIFICATION.
[Communicated from abroad by THÉOPHILE BACKELJAU, of Malines, in the Kingdom
of Belgium, Engineer.]
Improvements in Gas Governors.
I, HENKY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
Southampton Buildings, in the County of Middlesex, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
The pressure regulator constructed according to this invention comprises a
cylindrical vessel Chaving fixed in it a cylinder. D D which is open at its two
extremities. In this cylinder D D is a float K which contains a tube H that is closed
at the lower extremity and provided in proximity to the lower end with a series of
holes iii. This tube communicates with the exterior and is surrounded with another
tube M at the lower end of which is formed a vessel OP for receiving the upper
extremity of the float. The aforesaid tube M communicates with the vessel N which
is provided at the upper end of the vessel C.
holes ttt.
The space V in the cylinder D communicates with the open air through the
The admission of the gas to the apparatus takes place through the
tubes E S, and the discharge from the same through the tube R.
A liquid occupies part of the vessel C, float K and annular space T.
The diameters of the vessel C and cylinder D are such that when there is
pressure in the vessel C the rise (a) of the level of the liquid in the cylinder D
corresponds to the fall (b) of the level in the vessel C; moreover the diameters of the
float K and of the tube H are such that to an upward displacement a of the float
corresponds a change in the level of the liquid which in the float is equal to a + b.
If I charge the float as far as the upper part of the holes I I I, it is evident that
under an effective pressure a + b of the gas the liquid will rise through a distance
corresponding to a volume a in the cylinder D and will cause the float to rise a
distance corresponding to the same volume but to this displacement corresponds in
the float a change of level equal to a + b, that is to say the holes III will have a charge
absolutely equal to the effective pressure of the gas, and no outflow of gas will take
place through the holes I I I.
But if the float is charged as far as to 0.01 below the holes III, the displacement a
of the liquid in the cylinder D will amount for the holes I I I to a charge equal to
a + 6-0.01
that is to say this charge will be 0.01 less than the effective pressure of the gas,
and the outflow of gas through the holes I I I will be effected under a constant
pressure of 0.01.
To obtain an outflow under a definite pressure P through a pipe R it is sufficient
to charge the float up to a level remaining below the holes I'I I with a volume
equal to P.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed as communicated to me
by my foreign correspondent I declare that what I claim is :-
The pressure regulator substantially as above described and represented in the