Improvements in Reversing Gear.
Year: 1893

page_text: Date of Application, 11th Nov., 1893
Complete Specification Left, 11th Aug., 1894-Accepted, 15th Sept., 1894
Improvements in Reversing Gear.
I, WILLIAM HENRY LINDSAY, of The Coil Clutch & Pulley Company Limited,
Ashton Gate, Bristol, Engineer, do hereby declare the nature of this invention to
be as follows:-
The object of the invention is to provide reversing gear say for driving a shaft
or wheel in one or other direction as desired from a wheel or shaft that is driven
continuously in one direction.
For so driving a shaft from a pulley which is driven continuously in one direction
1 place upon the shaft a ring which can be slidden along the shaft but not turned
around it.
The circumference of the ring is coned in opposite directions the largest diameter
being in the middle.
On each side of the double cone I place a bevil toothed wheel each capable of
turning freely around the shaft and each having secured to it one end of a conical
spring coil which surrounds one or other of the cones whilst the other smaller end
of the spring coil is loose.
By shifting the double cone end wise one half of it can be pressed into the spring
coil which surrounds that half and so the cone will be locked to the bevil toothed
wheel that that spring coil is secured to. One of the bevil toothed wheels may
form part of or be fast with the driving pulley.
Gearing with the two bevilled tooth wheels I have a pinion or preferably two
three or more pinions free to turn on studs carried by a sleeve which surrounds the
shaft and which is prevented from rotating.
If the cone be clutched to this toothed wheel the pulley becomes clutched directly
to the shaft and pulley and shaft revolve together whilst the other bevil wheel
revolves in the opposite direction doing no work.
If this other bevil toothed wheel is clutched to the cone then the shaft is driven
in the opposite direction to the pulley.
By holding the double cone in an intermediate position both halves of the double
cone are out of gear with the spring cones and the shaft remains at rest whilet
the pulley revolves. The double cone may be carried by a sleeve which surrounds
the shaft and may be moved endwise by it or other means may be adopted for
moving the double cone to and fro.
The pulley or its hub may form a casing for enclosing all of the gear wheels and
friction clutches of the above described gear.
The speed at which the shaft is driven in one direction need not be the same as
that at which it is driven in the opposite direction-the two bevil toothed wheels
being made of different diameters to effect this object.
It is obvious that the arrangement may be reversed and the spring cones be
carried by the ring whilst the solid cones are fast with the bevil toothed wheels.
A similar arrangement of gear may be employed for driving one shaft in either
direction from another shaft which is in a line with it and is driven continuously
in one direction the form and disposition of the parts being modified accordingly.
Dated this 10th day of November 1893.

page_text: Improvements in Reversing Gear.
I, WILLIAM HENRY LINDSAY, of The Coil Clutch & Pulley Company Limited,
Ashton Gate, Bristol, 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 object of the invention is to provide reversing gear say for driving a shaft
or wheel in one or other direction as desired from a wheel or shaft that is driven
continuously in one direction.
The drawing shows the arrangement for driving a shaft from a pulley which
is driven continuously in one direction. I place upon the shaft a a ring which
can be slidden along the shaft but is prevented from turning around it by the
feather c.
The circumference of the ring bis coned in opposite directions the largest diameter
being in the middle.
On each side of the double cone I place a bevil toothed wheel d and e each
capable of turning freely around the shaft a and each having secured to it one end
of a conical spring coil d' and e' which surrounds one or other of the cones whilst
the other smaller end of the spring coil is loose.
By shifting the double cone 6 endwise one half of it can be pressed into the spring
coil which surrounds that half and so the cone will be locked to the bevil toothed
wheel that that spring coil is secured to. The bevil toothed wheel d may as shown
form part of or be fast with the driving pulley f.
Gearing with the two bevilled tooth wheels d and e I have a pinion or preferably
two three or more pinions y free to turn on studs h carried by a sleeve which
surrounds the shaft and which is prevented from rotating by the rods k fixed to the
walls or floor or the shaft a in place of being in one piece running through the
apparatus may be divided into two, one half being fixed and having the sleeve j
attached to it.
If the cone b be clutched to the toothed wheel d the pulley becomes clutched
directly to the shaft a and pulley and shaft revolve together whilst the other bevil
wheel e revolves in the opposite direction doing no work.
If this other bevil toothed wheel e is clutched to the cone b then the shaft a is
driven in the opposite direction to the pulley f
By holding the double cone in an intermediate position both halves of the double
cone are out of gear with the spring coils d¹ e¹ and the shaft a remains at rest
whilst the pulley frevolves. The double cone may as shown be carried by a
sleeve which surrounds the shaft and may be moved end wise by it or other means
may be adopted for moving the double cone to and fro.
The pulley or its hub may as shewn form a casing for enclosing all of the gear
wheels and friction clutches of the above described gear.
The speed at which the shaft is driven in one direction need not be the same as
that at which it is driven in the opposite direction-the two bevil toothed wheels
being made of different diameters to effect this object.
It is obvious that the arrangement may be reversed and the spring cones be
carried by the ring whilst the solid cones are fast with the bevil toothed wheels.
A similar arrangement of gear may be employed for driving one shaft in either
direction from another shaft which is in a line with it and is driven continuously in
one direction the form and disposition of the parts being modified accordingly.
In this case the shaft a is divided into two the wheel d being keyed to one half
and the pulley may be dispensed with but in other respects the arrangement
remains the same as is shewn in the drawing.

page_text: 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. The combination of the shaft a, the double cone b, the wheels d and e, the
springs d and e', the pinion or pinions g and the pulley all substantially as
described.
2. Reversing gear substantially as described and shewn in the drawings.
3. The modification of the gear shewn in the drawings in which the shaft a is
divided into two the wheel d being keyed to one half.
Loted this 11th dow of August 1804
W. H. LINDSAY.