Improvements in and connected with Reversing Gear for Boats, Motor Cars, and other purposes.
Year: 1898

page_text: Date of Application, 8th Úct., 1898
Complete Specification Left, 1st Aug., 1899-Accepted. 9th Sept.. 1899
Date of Application, oth UCL., 1898
Complete Specification Left, 1st Aug., 1899-Accepted. 9th Sept.. 1899
Improvements in and connected with Reversing Gear for Boats,
Motor Cars, and other purposes.
I, WILLEM CORNELIS, of 15, Ankerpark, Helder, Holland, Lieutenant in the
Royal Dutch Navy, do hereby declare the nature of this invention to be as
follows:
This invention which is applicable to all kinds of axles and shafts has for
its object to enable the motor to rotate continuously in one direction while the
machinery driven may be caused to rotate in the same direction as the motor,
to rotate in a direction contrary to the rotation of the motor or to be stopped
altogether without stopping or reversing the motor.
Now according to this invention as applied to screw propellers I form in one
with or secure to the shaft of the engine or other motor a spur wheel having
external teeth, and I form in one or attach to the propeller shaft an internal
spur wheel. This wheel is larger in diameter than the spur wheel on the
motor shaft and is provided at the open end thereof with a friction surface
preferably, by turning a number of ✓ shaped grooves therein.
I provide also a disc having a similar friction surface which is fitted on to
the motor shaft but which is not secured thereto in any way and which is also
capable of longitudinal movement on the said shaft, the said disc being normally
pressed toward the open end of the internal spur wheel attached to the propeller
shaft by means of a spring or springs which bear at one end against a collar
keyed to or formed on the motor shaft and at the other end against the said
disc.
I provide also a number of spur pinions which gear with the external spur
wheel on the motor shaft and with the internal spur wheel on the propeller
shaft.
These pinions are placed at equal intervals round the circumference of the
said wheels and rotate on studs secured in the said disc hereinafter called the
friction disc.
I provide also a cylinder hereinafter called the friction cylinder which
surrounds the internal spur wheel on the propeller shaft.
The friction cylinder does not rotate but has guide flanges on the sides
thereof which move in guides on the engine frame parallel to the propeller
shaft the end of the cylinder nearest to the friction disc being formed with
similar grooves.
The friction disc and the friction cylinder may be made in halves bolted
together to facilitate placing on their respective shafts.
I provide also a shaft oscillating in suitable bearings to which are attached
suitable excentrics two of which bear against a collar attached to or forming
part of a sleeve secured to or made in one piece with the friction disc.
The other two excentrics are fitted with straps the rods of which are pivotted
to the friction cylinder.

page_text: A suitable lever is secured to the shaft in such a manner that when the lever
is vertical the friction disc is disengaged from the friction cylinder and from
the internal spur wheel on the propeller shaft and the pinions roll round the
internal spur wheel without rotating the same.
When the lever is moved in one direction the friction disc is forced by
means of the spring or springs into gear with the internal spur wheel on the
propeller shaft which rotates in the same direction as the motor and the boat
goes "ahead."
When the lever is moved in the opposite direction from the vertical the
friction cylinder is drawn into gear with the friction disc which remains
stationary and the propeller shaft rotates in a direction contrary to that of the
motor and the boat goes astern."
Similar reversing gear may be applied to motor cars, tramcars, and other
vehicles and generally to stopping, starting and reversing the motion of shafts
and machines driven by a shaft or motor which continuously rotates in one
direction only.
In some cases I may place on the excentric shaft another excentric which by
means of suitable linkwork operates a valve or other regulating device to
prevent the motor from racing when the driven shaft is disconnected from the
motor shaft or the said excentric may operate a suitable brake for the same
purpose.
Instead of the friction cylinder I may use a friction brake surrounding the
periphery of the friction disc or any other suitable device for preventing the
rotation of the said disc when reversing the motion of the driven shaft.
Dated 8th October 1898
H. C. FOWLER,
11, Furnival Street, Holborn, London,
Agent for Applicant.
Improvements in and connected with Reversing Gear for Boats,
Motor Cars, and other purposes.
I, WILLEM CORNELIS, of 15, Ankerpark, Helder, in the Kingdom of Holland,
Lieutenant in the Royal Dutch Navy, 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 which is applicable to all kinds of axles and shafts has for
its object to enable the motor to rotate continuously in one direction while the
machinery driven may be caused to rotate in the same direction as the motor
to rotate in a direction contrary to the rotation of the motor or to be stopped
altogether without stopping or reversing the motor.
And in order that my said invention may be fully understood I will proceed
to explain the same with reference to the accompanying sheet of drawings in
which:
-
Fig. 1 represents sections on X X Fig. 2 of a reversing apparatus con-
structed according to this invention.
Fig. 2 is section of apparatus looking towards the motor on line X Y
Fig. 1.
Fig. 3 shews reversing lever and shaft.
Fig. 4 shews an alternative arrangement of springs for actuating the friction
disc.

page_text: Figs. 5, 6, and 7 shew an alternative construction of reversing shaft.
The same letters denote the same parts in all the figs.
Now according to this invention which I will describe as applied to screw
propellers I form in, one with or secure to the shaft F of the engine or other
motor a spur wheel E having external teeth and I form in one with or secure
to the propeller shaft A a spur wheel B having internal teeth.
The wheel B is larger in diameter than the wheel E and is provided at the
open end thereof with a friction surface preferably by turning a number of
V_shaped grooves therein.
I provide also a disc D having a similar friction surface which surface is also
wide enough to engage with a similar surface on the open end of a friction
cylinder P.
The friction disc 1) is fitted to the shaft F and slides freely thereon and is
not secured thereto in any way the said shaft being capable of rotating freely
in the said disc which is provided with an antifriction bush J.
The disc 1 is normally pressed to the left of Fig. 1 by means of a spring G
as shewn by Fig. 1 or a series of springs G G as shown by Fig. 4 the said
spring or springs bearing at one end against the bush and the other end
against a collar H keyed or otherwise secured to the shaft F.
The friction disc D has secured therein a number of studs I on which rotate
spur pinions C the said pinions gearing with the spur wheels E and B the said
studs being placed at equal distances apart.
The cylinder P is preferably made in halves to facilitate it being placed on
the shaft A and is provided with flanges Q Q which slide in suitable guides
on the engine frame parallel to the shaft A.
The cylinder P does not rotate but merely has a sliding motion imparted to
it along the shaft. A.
The disc D may also be made in halves the two portions of the said disc and
cylinder P being secured together by means of bolts as shewn or by any other
suitable means.
In order to stop start and reverse the propeller I provide a shaft M oscillating
in suitable bearings to which shaft I attach excentric cams OO, S S, T, of which
the excentrics 0 0 bear on a collar L attached to or forming part of the boss K
of the discs D) while the excentrics S S are provided with straps the rods W W
of which are pivotted at X X to the guides Q Q. A suitable lever Z is secured
to the shaft M in such a manner that when the said lever is vertical the disc D
is disengaged from the cylinder P and from the wheel B and the pinions C roll
round the wheel B without rotating the same.
When the lever Z is moved in one direction the disc D is forced by means of
the spring or springs into gear with the wheel B on the propeller shaft which
then rotates in the same direction as the engine or other motor and the boat
goes "ahead."
When the lever Z is moved in the opposite direction from the vertical the
friction cylinder P is drawn into gear with the disc D which is thereby held
stationary and the propeller shaft A is rotated in a direction contrary to that
of the engine or motor and the boat goes "astern.'
An excentric T, may be used to operate a valve or other regulating device
to prevent the motor from racing when the propeller shaft is disconnected from
the motor shaft or the said excentric may operate a suitable brake for the
same purpose.
Instead of the friction cylinder PI may use a friction brake on the periphery
of the disc D or any other suitable device to prevent the rotation of the said
disc when reversing the motion of the propeller shaft.
Reversing gear constructed as hereinbefore specified may be applied to motor
cars tram cars and other vehicles driven by gas and oil engines and generally
to all kinds of machinery which have to be stopped, started and reversed without
stopping or reversing the motor or driving shaft.

page_text: By using a friction brake on the disc D the gearing may be used as a speeding
device the driven shaft A rotating at the same speed as the driving shaft F
or slower than the said shaft according to whether the disc is free to rotate
with the shaft F held stationary by the brake or allowed to rotate at a slower
speed than the shaft F by partially applying the brake.
In the modified form of reversing shaft shewn by Figs. 5, 6 and 7 instead
of bending the shaft M as shewn by Fig. 3 to enable it to clear the shaft F
I make the shaft M in two pieces as shewn and to each portion of the shaft I
key or otherwise attach a lever m which is connected by a link n to a lever m
which is similarly secured to a countershaft M¹ to which is attached the lever Z.
This arrangement is preferable as being stronger and it also enables the
distance between the disc D and collar L to be reduced to a minimum.
Having now particularly described and ascertained the
invention and in what manner the same is to be performed
I claim is:
nature of my said
I declare that what
1. In a reversing gear for boats motor cars and other purposes the com-
bination of a shaft F driven from the engine or other motor and having a spur
wheel E formed integral therewith or secured thereto a shaft A connected to
the propeller or other mechanism to be driven an internal toothed wheel B
formed in one piece with or secured to the shaft A a friction cylinder P having
flanges thereon moving in guides to enable the said cylinder to move backwards
and forwards along the shaft A a friction disc 1) having a cylindrical portion K
terminating in a collar L. A collar H secured to the shaft F. A spring G
whereby the disc 1) is normally pressed towards the wheel B pinions C gearing
with the wheels B and E and rotating on pins or studs secured in the disc D
and a means whereby the disc D may be held in contact with the wheel Bor
the cylinder P or disconnected from both all substantially as and for the
purposes stated.
2. In a reversing gear for boats motor cars and other purposes the con-
struction and use of a cylindrical internal spur wheel B formed in one piece
or secured to the shaft A and having the open end thereof formed into a
friction driving surface preferably by turning V shaped grooves therein and
adapted to engage with a similar surface on a disc D on the driving shaft
substantially as and for the purpose stated.
3. In a reversing gear for boats, motor cars and other purposes the friction
disc D adapted to move longitudinally on the driving shaft F and to engage with
or to be disconnected from the wheel B and cylinder P the said disc having a
cylindrical portion K and collar L and being normally pressed towards the
wheel B by the spring G all substantially as and for the purposes specified.
4. In a reversing gear for boats motor cars and other purposes the use of a
friction brake surrounding the disc 1) in lieu of cylinder P as and for the
purposes specified.
5. In a reversing gear for boats, motor cars and other purposes the shaft M
having cams or excentrics O, O, S S, T, thereon or any mere mechanical equi-
valent therefor as and for the purposes specified.
C. Reversing gear for boats, motor cars and other purposes as shewn by the
accompanying drawing.