Improvements in Apparatus and Appliances for Governing Marine Engines.
Year: 1894

page_text: Date of Application, 16th July, 1894
Complete Specification Left, 16th Apr.. 1895-Accepted, 18th May, 1895
PROVISIONAL SPECIFICATION.
Improvements in Apparatus and Appliances for Governing Marine
Engines.
ALEXANDER WILSON Marine Engineer 24 Norwood Street Spring Bank
Hull WILLIAM MORRISON Ship Model Maker 28 Kingston Terrace Witham
Hull do hereby declare the nature of this invention to be as follows:
The object of the said invention is to provide compact, efficient, and easily
worked apparatus, and appliances, for the prevention of racing in marine engines,
by governing the engine.
We provide two cylinders of different areas. The small cylinder is fitted with
a piston valve and three pipes, one inlet, two outlets, the inlet pipe being connected
to centre of small cylinder, and to condenser, the pipe being fitted with a tap or
valve equivalent. The centre of small cylinder is preferably open to the condenser
or induction pipe. In this small cylinder between the two ends of piston valve,
there is an area for vacuum to impart motion to the second or large cylinder
piston, and one or four springs or cushions at each end of this cylinder; the above
mentioned outlet pipes being connected, one to each end of small cylinder, and the
other ends of pipes connected, one to each end of large cylinder, for admission
passages, and so deliver at each end to feed large cylinder and give motion to the
piston of same, and thereby to actuate the throttle valve direct, or by bell cranks,
or any other well known device.
i
A suitable framework with small cylinder connected, and suitable carrying shaft
bearings and driving pulleys is provided, (the shaft being horizontal) and secured
in engine room. When it is desired to impart motion to the said shaft, this is done
by means of a helt from engine shaft and pulley if required. The shaft, which may
be kept constantly revolving from the engine shaft when required, is supplied with
two discs, one permanently fixed, and the other free but connected by four arms
joined to each disc, & jointed in the centre to four balls, to give freedom to the
motion of the balls. A spring of helical or volute kind is provided between the
two discs. The free disc has preferably a groove turned out to fit the forked end
of piston rod of small cylinder, and to and fro motion is communicated to the said
piston valve. The above horizontal shaft, when it is desired that motion should
be communicated from the engine shaft, revolves the shaft with disc & balls.
When the engine commences racing, the balls move upwards and outwards, the result
of these movements being to give motion to the free disc, which produces a
compression of the helical spring, and also serves to move up the piston valve of
small cylinder, and opens one of the outlet admission passages to give motion to
the piston of large cylinder. One of these admission passages is always open to
the condenser, and the other to atmosphere alternately. When the action takes
place efficaciously, the throttle valve is shut, and kept shut until the engine stops
racing. When it does so, the helical spring moves back the free disc and piston
valve of small cylinder, and cuts off the vacuum from top eud of large cylinder,
and supplys the bottom end so that there is a reaction, and reopens the throttle
valve.
Dated this 12th day of July 1894.
ALEXANDER WILSON.
WILLIAM MORRISON.

page_text: COMPLETE SPECIFICATION.
'Improvements in Apparatus and Appliances for Governing Marine
Engines.
We, ALEXANDER WILSON of 24 Norwood Street. Marine Engineer, and
WILLIAM MORRISON of 28 Kingston Terrace, Witham, Model Maker, both in
Hull in the County of York, 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 object of our said invention, is to provide compact, efficient and easily
worked apparatus for the prevention of racing in marine engines by governing the
said engines.
DESCRIPTION OF DRAWINGS.
Fig. 1. shows vertical elevation of our improved apparatus for governing marine
engines to prevent them racing.
Fig. 2. is a vertical elevation of large cylinder.
Fig. 3. is a plan of Figs. 1 and 2 showing small and large cylinders connected.
Fig. 4. shows driving pulley H suitable to receive either belt or rope.
For the purpose of our invention we provide two cylinders of different areas A
and A' the small cylinder A is fitted with a small piston valve and rod B, and
three pipes, one the inlet pipe C, and two outlet pipes C¹, the inlet pipe C being
connected to the centre of the small cylinder and to the condenser, the pipe being
fitted with a tap, valve or the like for the purpose of turning on or off to create or
destroy vacuum. The centre of the small cylinder is preferably open to the
condenser or induction pipe. In this small cylinder, between the two ends of the
piston valve B is an area for vacuum to impart motion to the second or large
cylinder piston D; this large cylinder is provided with one or more springs, cushions
or the like B at each end see Fig. 3, the aforesaid outlet pipes C are connected
to the said large cylinder from each end of the small cylinder to each end of the
large cylinder, for admission passages, and so deliver at each end and feed such
large cylinder, and give motion to the piston D within it, thus actuating the
throttle valve which is connected to such piston direct, or by bell cranks or any
suitable means.
We employ a suitable framework E having suitable bearings F for carrying
horizontal shaft G upon which is mounted a suitable driving pulley H, motion
being imparted to this pulley by means of a belt, rope or the like from the engine
shaft.
The said horizontal shaft G is provided with two discs J and K, the disc J is
permanently fixed to the shaft, and K is loose, but is connected to the disc J, by
four sets of arms L jointed in the centre to four balls M, a set of two arms to each
ball; to give freedom to the motion of such balls M, a helical or the like spring O
encircles the shaft G, between the said discs J and K.
The said disc K has a groove K' formed on its periphery to receive the forked
or concave end B of the piston rod B of the small cylinder A, by which means
motion is imparted to the said piston valve of small cylinder.
For the purpose of regulating the throw of the balls we employ two rings P
and P, mounted on the horizontal shaft G, the said rings being connected by two
or more pins, screws or the like Q which pass through the fixed disc J, the said
rings therefore turn with the said disc J, the inner ring P bears against the
spring O, and a fork R, having a threaded end S working in brackets T bears
against the outer ring P¹, a milled nut U being fitted on the threaded part within
the bracket for the purpose of allowing the said fork R to be moved backwards

page_text: and forwards on the shaft, thus compressing or allowing the spring to be extended,
by which means the throw of the balls can be regulated.
The framework E of the apparatus is provided with feet for it to stand upon,.
such feet having holes through them for allowing the apparatus to be bolted to the
5 floor or any convenient place. The large cylinder may be provided with feet
also, for a like purpose, and it may be bolted to a bulkhead or in any suitable
position.
The driving pulley of the apparatus may be made as shown at Fig. 4, having a
surface for a strap, or a groove to receive a rope so that it is applicable to engines.
driven by either strap or rope.
The action is as follows:-When it is required to prevent the engines racing, a
strap or the like is run from the shaft of the engine to the pulley H of our apparatus,
by which means the shaft G is driven, the fixed disc J turns with the shaft, and
being connected to the loose disc K by means of arms Ļ pivotted to the balls M,
it also causes the said disc K to turn at the same time, and as speed is attained,
the balls M fly outward drawing the disc K inward on the shaft G, compressing
the spring O, and drawing out the piston of the small cylinder A, by means of the
forked end B of the piston rod B working in the groove K' in the disc K, as the
said disc K moves inward on the shaft; the spring O preventing it going too far.
As the piston valve of the small cylinder moves, it opens one of the outlet
admission passages to give motion to the piston D of the large cylinder. One of
these admission passages is always open to the condenser and the other to the
atmosphere alternately. When the action takes place efficatiously, the throttle
valve is closed and kept shut until the engine stops racing, when this takes place
the helical spring O moves back the free disc K, and (at the same time) the piston
valve B of small cylinder A, and thus cuts off the vacuum from the top end of
large cylinder and supplies the bottom end so that there is a reaction which opens
the throttle valve.
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. An apparatus for governing marine engines to prevent them racing, consisting
of a large cylinder A', and a small cylinder A with piston valves B and D, and
inlet and outlet pipes C and C¹ respectively, operated by means of arms L and
balls M, shaft G, having discs J and K, the piston valve of small cylinder A being
operated by fork B³ working in the groove K' of loose disc K, the whole being
driven by means of pulley H connected by strap, rope or the like to pulley on
driving shaft of engine substantially as shown and described.
2. In apparatus for preventing marine engines racing, the employment of a
fork R having screwed end S adjusted by means of nut U or the like, and bearing
against connected discs P and P₁ for compressing the spring O, so regulating the
movement of the balls M substantially as shown and described.
3. The apparatus for governing marine engines and to prevent them racing,
consisting of cylinders A and A, having pistons B and D, springs B¹ pipes
and C, the pistons are operated by the fork B', discs K and J, rods L, balls M,
haft G, driving pulley H, spring O, fork R, adjusting nut U discs P and PI,
all operating in the manner and for the purposes substantially as shown and
lescribed.
Dated this Eleventh day of April 1895.
JOHN E. WALSH,
Savile Street, Hull, and Crossley Street, Halifax,
Patent Agent for the Applicants.