Improvements in Tandem Bicycles.
Year: 1892

page_text: Date of Application, 11th May, 1892
Complete Specification Left, 13th Feb., 1893-Accepted, 11th May, 1893
PROVISIONAL SPECIFICATION.
Improvements in Tandem Bicycles.
We ERNEST HENRY AINSWORTH, formerly of 47 Bold Street, Liverpool but
now of 4 Olive Mount, Wavertree, Cycle Manufacturer and EDWARD GEORGE
HIGGINSON of 25 Lime Street, Liverpool, Cycle Factor both in the County of
Lancaster and WILLIAM HARRISON AINSWORTH of 6 Richmond Terrace Cox
Street Coventry in the County of Warwick, Mechanical Engineer, do hereby
declare the nature of this invention to be as follows:-
The invention relates to a novel combination and arrangement of parts whereby
each wheel is driven independently of the other by a rider acting upon cranks
fixed to a spindle passing centrally through the hub of the wheel and driving the
latter by what is known as central gearing.
The front wheel is the steering wheel; steering handles are preferably provided
for each rider, such handles being connected together by links and one or more
universal joints, as is well understood, and both wheels are provided with central
gearing.
The frame of the machine according to our invention is formed of an upper
horizontal tube and a lower inclined tube connected together at the head by a
short tube and, just in front of the rear wheel, by a tube through which the rear
steering shaft passes, the latter being preferably fitted at each end with ball
bearings. The bead of the machine is fitted in any well known manner and the
rear of the frame has the two longitudinal tubes connected together by the back
forks meeting together at the hub of the rear wheel.
The front seat is mounted above the upper tube of the frame at the usual
distance behind the head of the machine, and the rear seat is mounted on a seat
pillar fixed in the head of the upwardly extending rear fork.
T
11
1000
E. H. AINSWORTH,
By Harris & Mills,
23, Southampton Buildings, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in Tandem Bicycles.
We ERNEST HENRY AINSWORTH, formerly of 47 Bold Street, Liverpool, but
now of 4 Olive Mount, Wavertree, Cycle Manufacturer and EDWARD GEORGE
HIGGINSON of 25, Lime Street Liverpool, Cycle Factor both in the County of
Lancaster, and WILLIAM HARRISON AINSWORTH of 6 Richmond Terrace Cox
Street Coventry in the County of Warwick, Mechanical 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 invention relates to a novel combination and arrangement of parts whereby
each wheel is driven independently of the other by each rider acting upon cranks
and driving his own wheel by what is known as central gearing.
The front wheel is the steering wheel; steering handles are preferably provided
for each rider, such handles being connected together by links and one or more
universal joints, as is well understood, and both wheels are provided with central
gearing.
The frame of the machine according to our invention is formed of an upper

page_text: horizontal tube and a lower inclined tube connected together at the head by a
short tube and just in front of the rear wheel by a tube through which the rear
steering shaft passes, the latter being preferably fitted at each end with bali
bearings. The head of the machine is fitted in any well known manner and the
rear of the frame has the two longitudinal tubes connected together by the back
forks meeting together at the hub of the rear wheel.
The front seat is mounted above the upper tube of the frame at the usual distance
behind the head of the machine, and the rear seat is mounted on a seat pillar fixed
in the head of the upwardly extending rear fork.
And in order that our invention may be more clearly understood and readily
carried into effect, we will proceed, aided by the accompanying drawing, more fully
to describe the same.
The front wheel a is the steering wheel; steering handles are preferably
provided for each rider, such handles being connected together by a link c and one
or more universal joints 62, as is well understood. In some
cases instead of
connecting the handles together as above described, we connect the crown of the
front fork to the tube 6 by means of one or more links and joints as is shown in
the drawing in dotted lines. Both wheels are provided with central gearing a²
and cranks a³.
a
The frame of the machine according to our invention is formed of an upper
horizontal tube d and a lower inclined tube d' connected together at the head by
short tube and two other tubes 3d, the latter being just in front of the rear
wheel a'. The rear of the frame has the two longitudinal tubes d d¹ connected
together by the back forks d³ de meeting together at the hub a of the rear
wheel a', the fork de being connected by a tube to the rear end of the horizontal
tube d. The head of the machine is fitted in any well known manner.
The rear
steering bar is connected to the tube passing through the tube d' and is.
preferably fitted at each end with ball bearings. The front saddle is mounted
above the upper tube of the frame at the usual distance behind the driving cranks.
It may be clipped directly upon the upper tube d or it may be mounted upon an
Lpillar fitting into the tube as shown in the drawing and which is held
in any suitable manner. The rear saddle is mounted upon an pillar fixed in the
tube d².
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. A tandem bicycle in which each wheel is driven independently by means of
cranks and central gearing and the front wheel is steered by means of steering
handles for one or both riders, substantially as herein shown and described.
2. In a tandem bicycle the peculiar combination and arrangement of parts, sub-
stantially as herein shown and described and for the purpose stated.
Doted the 19th day of Febumeny 1902
E. H. AINSWORTH,
By Harris & Mills,
23, Southampton Buildings, London,. W.C., Agents.