Improvements in Controlling Oil Engines in Connection with Reversing Propellers or Reversing Gear.
Year: 1898

page_text: Date of Aplication, 22nd Mar., 1898
Complete Specification Left, 21st Dec., 1898-Accepted, 4th Feb.,
1:99
Improvements in Controlling Oil Engines in Connection with
Reversing Propellers or Reversing Gear.
I, HERBERT EDWARD VOSPER, of Broad Street, Portsmouth, in the County of
Hants, Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to means whereby the operation of propeller or other
reversing gear in connection with an oil engine serves to control the speed of
such engine.
According to my invention I arrange on the exhaust pipe of the oil engine
a throttle valve a lever in connection with which is connected to a lever on the
reversing gear so that when the propeller or gear is in full gear either ahead or
astern the valve is wide open, but when the reversing propeller or gear is placed
so that the propeller or gear is doing no work, the throttle valve is shut whereby
the engine only runs at slow speed.
Room is allowed around the throttle valve so that it does not stop the engine
but simply reduces the speed. The rod connecting the lever of the propeller or
reversing gear and the lever of the throttle valve may be a rod, pipe, or other
suitable device.
The connection between the lever of the reversing gear and the rod is in the
form of a catch to permit of disconnecting the parts to open the valve wide
for starting.
T001. at Haval 1808
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicant
Improvements in Controlling Oil Engines in Connection with
Reversing Propellers or Reversing Gear.
I, HERBERT EDWARD VOSPER, of Broad Street, Portsmouth, in the County of
Hants, 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:
:~
This invention relates to means whereby the operation of propeller or other
rever-ing gear in connection with an oil engine serves to control the speed of
such engine.
According to my invention I arrange on the exhaust pipe of the oil engine
a throttle valve a lever in connection with which is connected to a lever on the
reversing gear so that when the propeller or gear is in full gear either ahead or

page_text: astern the valve is wide open, but when the reversing propeller or gear is placed
so that the propeller or gear is doing no work, the throttle valve is shut whereby
the engine only runs at slow speed.
Rcom is allowed around the throttle valve so that it does not stop the engine
but simply reduces the speed. The rod connecting the lever of the propeller or
reversing gear and the lever of the throttle valve may be a rod, pipe, or other
suitable device.
The connection between the lever of the reversing gear and the rod is in the
form of a catch to permit of disconnecting the parts to open the valve wide
for starting.
To enable the invention to be fully understood I will describe it by reference
to the accompanying drawing in which:
-
Figure 1 is a view of a portion of a boat fitted with propelling apparatus and
having my improvements applied thereto.
Figure 2 is a plan view of a detail hereinafter described and drawn to a larger
scale.
a represents the boat, the oil engine or motor, e the exhaust, the propeller,
e the propeller shaft driven by the motor in any suitable manner and the
reversing lever; the said lever is pivoted at f and by its movement upon this
pivot controls the propeller. g is a screw adapted to be rotated by the hand
wheel gland passing through a nut attached to the free end of the lever. When
the hand wheel is turned therefore the lever f is moved upon its pivot and
controls the propeller d as desired.
h is the throttle valve which I arrange in the exhaust pipe c. This throttle
valve is of such a shape and size that when completely closed it does not fully
shut the passage through the pipe c, spaces h¹, being left around the said valve
as clearly shewn in Figure 2. i is the rod which connects the valve h to the
reversing lever f in such a manner that the movement of the said lever f opens
or closes the valve h.
With this arrangement when the propeller d is in full gear either ahead or
astern the valve is wide open, but when the propeller d is placed so that it is
doing no work the valve his shut leaving only the spaces h', ' so that the engine
runs at slow speed.
The rod is formed with a slot at its free end the said slot being adapted
to receive a pin upon the lever f. By thus connecting the two levers, they can
be disconnected with facility to enable the valve h to be opened wide at starting.
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:-
1. The described improvements in controlling oil engines driving propellers
having reversing gear such improvements consisting in providing the exhaust
pipe with a throttle valve so shaped and connected with the reversing gear that
when the said gear is placed for the propeller to do no work the said valve is
closed and the engine only runs at a slow speed, substantially as hereinbefore
described.
2. The improved propelling, reversing and controlling gear hereinbefore des-
eribed and illustrated in the accompanying drawing.
Dated the 21st day of Dagamli 100o
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicant