Improvements in Apparatus for Governing the Speed of Gas, Oil, or other similar Motor Engines.
Year: 1892

page_text: Date of Application, 28th Sept., 1892
Complete Specification Left, 27th June, 1893-Accepted, 29th July, 1893
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Governing the Speed of Gas, Oil,
or other similar Motor Engines.
We, HENRY HERBERT ANDREW, Director of J. E. H. Andrew and Company
Limited, Reddish, near Stockport, in the County of Chester, Engineers, ALFRED
ROWE BELLAMY, Manager, and ROBERT GARSIDE, Foreman Fitter, of the same
address, do hereby declare the nature of this invention to be as follows:-
Our invention relates particularly to gas oil or other similar engines and the
object of the first part of our invention is to simplify the governing mechanism, and
of the second to cause the governor to throttle the supply of gas when the engine
exceeds its normal speed, before the hit and miss movement which operates the gas
admission valve can come into play.
In carrying the first part of our invention into effect we employ a suitable
centrifugal governor, the sleeve or other moving part of which is connected by rods
to the end of a short lever mounted on a short shaft or stud supported on the engine
frame in such manner that the movement of the governor caused by irregularities in
the speed of the engine causes the lever to rock or oscillate on its stud. To the
boss of this lever is also secured an arm the end of which is shaped so as to keep
the striking finger out of contact with the hit and miss motion, when the speed of
the engine is too great, the hit and miss motion being actuated in any convenient
manner.
the
In carrying out the second part of our invention we mount the lever and arm on
the spindle of a winged or other suitable throttle valve; the spindle passes across
gas inlet and the wings are so arranged that the movements of the governor
sleeve conveyed to the spindle cause the valve to partially close the gas inlet and
throttle the supply before the hit and miss motion which operates the gas admission
valve can be affected by the governor.
The striker which actuates the gas valve is held normally in contact with the
admission valve by a spring, and it is preferably mounted on a small elbow lever,
the other end of which is acted upon by the shaped end of the arm mounted on the
shaft or stud.
Dated this 24th day of September 1899
H. B. BARLOW & GILLETT,
Agents for Applicants.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Governing the Speed of Gas, Oil,
or other similar Motor Engines.
We, HENRY HERBERT ANDREW, Director of J. E. H. Andrew and Company
Limited, Reddish, near Stockport, in the County of Chester, Engineers, ALFRED
ROWE BELLAMY, Manager, and ROBERT GARSIDE, Foreman Fitter, of the same
address, 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 :—
Our invention relates particularly to gas, oil or other similar engines and the
object of the first part of our invention is to simplify the governing mechanism, and
of the second to cause the governor to throttle the supply of gas when the engine
exceeds its normal speed, before the hit and miss movement, which operates the gas
admission valve, can come into play.
And in order that our invention may be fully understood and readily carried into

page_text: effect we will describe the accompanying sheet of drawings reference being had to
the figures and letters marked thereon.
Fig. 1 is a side elevation, Fig. 2 an end elevation and Fig. 3 a detail of the gas
admission valve illustrating the application of the first part of our improvements to
a gas, oil or similar engine.
Figs. 4, 5 and 6 are similar views to Figs. 1, 2 and 3 respectively and illustrate
the second part of our improvements.
Similar letters refer to similar parts throughout the several views.
In the drawings, a designates the power cylinder, b the centrifugal governor,
which in this case is shown driven by bevel gears c, d from the side shaft e, f the
loose sleeve mounted on the governor spindle and connected by rods 9, h to a short
lever i.
In the arrangement illustrated by Figs. 1 to 3 the short lever i is shown mounted
on a short shaft or stud j supported on the valve box casting which is secured to the
engine frame, and to the boss of the lever i is secured an arm i¹ the lower end of
which is reduced in diameter as shown or otherwise suitably shaped so as to act on
the hit and miss motion. The hit and miss motion consists of the striking finger or
valve opener k which is a small elbow lever pivoted on a lever fulcrumed at 1' and
operated by a cam e¹ on the side shaft e. The finger k is held by means of a
spring normally in contact with the striking plate m' on the stem of the gas
admission valve m.
When the speed of the engine rises above the normal, the loose sleeve of the
centrifugal governor is raised and by the rods g, and lever i moves the arm into
contact with the arm of the pivoted striking finger k consequently when the cam e¹
actuates the lever and raises the striking finger the latter comes in contact with
the shoulder formed by the reduced diameter of the end of the arm i¹ and is thereby
moved into the position indicated by dotted lines Fig. 2, out of contact with the
striking plate m¹ of the admission valve m.
In carrying out the second part of our invention we employ in addition to the
mechanism already described with reference to Figs. 1 to 3 a winged or other
suitable throttle valve n fixed on the short shaft or spindle j. The movements of
the governor sleeve conveyed to the spindle j cause the wings of the valve n
to partially close the valve inlet o and throttle the supply before the hit and
miss motion which operates the gas admission valve m can be affected by the
governor.
We prefer to so mount the wing valve n on its spindle that it can be readily
thrown out of action when desired.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. The combination with the striker of the hit and miss motion for operating the
gas or other fluid admission valve, of an arm connected to or operated from the
governor in such a manner that when the speed of the engine exceeds the normal
the striker of the hit and miss motion is moved out of contact with the striking
plate of the admission valve substantially as herein described with reference to
Figs. 1 to 3 of the accompanying drawings.
2. The combination with a hit and miss motion for operating the gas admission
valve, of a winged or other suitable throttle valve actuated from the governor to
throttle the supply of gas or other fluid, when the engine exceeds its normal speed,
before the hit and miss motion comes into play substantially as herein described
with reference to Figs. 4 to 6 of the accompanying drawings."
Dated this 26th day of June 1893.
H. B. BARLOW & GILLETT,
17, St. Ann's Square, Manchester, Agents for Applicants.