Improvements in Governors for Gas Engines.
Year: 1892

page_text: Date of Application, 2nd Mar.; 1892-Accepted, 2nd Apr., 1892
COMPLETE SPECIFICATION.
Improvements in Governors for Gas Engines.
I, HENRY NIELD BICKERTON, of 6 Richmond Street, Ashton-under-Lyne, Gas
Engineer, 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 improvements relate to governors for gas engines, and have for object the
more simple and efficient controlling or regulating the speed of the engine in work.
To effect this and to accomplish my improvements, I construct apparatus which
will be understood by reference to the accompanying sheet of drawings, wherein
Fig. 1, is a plan view, and Fig. 2, a front view of apparatus arranged in
accordance with my invention; while
Fig. 3, is a transverse section, and Fig. 4, a longitudinal elevation of the governor
valve, and Fig. 5, an elevation of a portion thereof in detail.
The same letters indicate corresponding parts wherever they occur.
, a, is the valve which is of a rotary character, and which fits and turns in the
This
casing b, b, and is provided with ports or ways for the passage of the gas.
rotary valve is revolved by being fitted on to the end of the side shaft, or it may
be by being geared thereto. A cam c, c, is attached to the valve, or it might be
to the revolving shaft, and which cam operates a two armed lever d, d, which is
weighted at one end with a weight , d, and is resisted at the second arm by a
spring e, e, which may be tightened or slackened by the nut f, f, on the spindle ;
or any other convenient form of spring may be used.
A plug 9, 9, which also is separately shown in detail in Fig. 5,-fits in the
open end of the rotary valve, and is held in position by the plate spring k, and will
revolve therewith by friction if not interfered with, keeping the valve port closed.
But this plug has formed thereon or attached thereto projections g', ', which are
capable of engaging a similar nose or projection h, on the end of the lever d, d,
which lever is operated by the cam in such wise that if the speed becomes greater
than the normal, the projections gl, g', which are nearly coincident with the
projecting portions of the cam, will be carried round before there is time for the
spring to bring back the lever, and so for that revolution the valve will be kept
closed by non-disturbance, and no explosion taking place, the speed will be reduced.
On the other hand, if the engine is running at such a speed as will give the lever
catch time to engage with the projection g¹ on the plug. 9, the same will be
prevented from turning, and thus by the rotating valve continuing to turn, the
valve port will be opened for that revolution, and an explosion will take place,
after which, the next rise in the cam will set free the plug g, g, to be carried round
with the rotating valve, or again restrained, according to the speed the engine has
attained. Hence it follows that the tighter the spring e, e, presses on the lever d, d,
the greater will be the normal speed, and vice versa.
In the example shown the casing for the rotary valve is formed in two parts for
convenience of removal and the like, which parts are secured or held together by
means of the screws j,j; but this may be varied as it forms no part of this my
present invention.
Variations in detail, such as the form and position of the various parts, may be
made without departing from the peculiar character of the invention.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1 In governors for was engines, the combination of a rotary valve with a
"

page_text: frictional plug capable of being carried round therewith by friction, or being
detained by means of catches or projections, interlocking with a similar catch or
projection upon an oscillating lever arm, for the purpose, and in manner, substantially
as herein shown and described.
2. The combination of a lever weighted at one end, and counterbalanced by a
spring, and operated. by a cam, with a. rotary valve fitted with a frictional plug,
such plug and lever having interlocking catches or projections thereon, for the
purpose of governing or regulating the speed of gas engines, and in manner
substantially as herein shown and described.
3. The combination of apparatus for the purpose of governing or regulating
gas engines, substantially as described in the foregoing Specification and set forth
in the accompanying drawings.
Dated this 1st day of March 1892.
WILLIAM GADD, C.E.,
64, Barton Arcade, Manchester, Agent for Applicant.