cycle Manufac
Year: 1886

page_text: Date of Application, 20th Nov., 1886.
Complete Left, 5th Aug., 1887.
Complete Accepted, 6th Sept., 1887.
We, WILLIAM HILLMAN, WILLIAM HENRY HERBERT, and GEORGE BEVERLEY
COOPER, all of the Premier Works, Coventry in the county of Warwick, Bicycle
Manufacturers, ROBERT ARNOLD DALTON, of the Quadrant, Coventry aforesaid,
Gentleman, GEORGE FRANCIS TWIST of Keresley near Coventry aforesaid Gentleman,
and ALEXANDER ROTHERHAM of Coundon Hall near Coventry aforesaid, Gentleman,
do hereby declare the nature of this invention' to be as follows:-
The present invention consists of improvements in or additions to the safety
bicycle described in our provisional specification filed the 16th October last No. 13220,
and relates to means whereby the same is converted into an efficient safety tandem or
by slight modifications into a luggage carrying bicycle.
For this purpose instead of carrying the Ồ shaped tube, carrying the crank axle
and chain wheel and which also acts as a mud guard, around only one side of the
driving or driven wheel we according to the present invention carry it round both
sides that is to say fore and aft of such wheel and fit it with a crank axle and chain
wheel on each side of the driving or driven wheel; and in suitable position to enable
such second crank axle to be driven by a second rider we fix to a support carried by
such D shaped tube a seat and a pair of grip handles. The extension of the
D shaped tube is supported by stays connected thereto and to the bearings of the
driving or driven wheel.
The chains from both chain wheels drive onto chain hubs fixed to the axle of the
driving or driven wheel and said chains are both adjusted in tension by similar means
to those referred to in our said former provisional specification. The driving or driven
wheel may be either the front or the rear wheel of the bicycle.

page_text: By dispensing with the second seat, the grip handles, and the second crank axle, the
frame above described for carrying the same but somewhat abridged in front, may be
employed to carry luggage baskets, bags or boxes on either side thereof which may
be permanently or removeably attached thereto.
Dated November 20th 1886
WILLIAM HILLMAN.
WILLIAM HENRY HERBERT.
G. B. COOPER.
ROBT., ARNOLD DALTON.
G. F. TWIST.
We, WILLIAM HILLMAN, WILLIAM HENRY HERBERT and GEORGE BEVERLEY
COOPER all of the Premier Works, Coventry in the County of Warwick, Bicycle
Manufacturers, ROBERT ARNOLD DALTON of the Quadrant, Coventry aforesaid,
Gentleman, GEORGE FRANCIS TWIST of Keresley, near Coventry aforesaid, Gentleman
and ALEXANDER ROTHERHAM of Coundon Hall, near Coventry aforesaid, Gentleman,
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 present invention relates to that class of safety bicycle in which each wheel is
mounted to run in a fork of similar character to that of the steering fork of an
ordinary tricycle, said forks being set at such an angle that their upper portions
somewhat approach each other and being connected together by a short backbone
provided with suitable fittings to permit of the motion of each fork in relation thereto
and being provided with levers connected together by a pin on one working in a slot
in the other so that whatever motion is given to the driving or driven wheel a
corresponding amount of motion in the contrary direction shall be given to the
other wheel.

page_text: The present invention consists of improvements in or additions to the above
described class of safety bicycle whereby the same is converted into an efficient
safety tandem.
For this purpose instead of carrying the D shaped tube, carrying the crank axle
and chain wheel and which also acts as a mud guard, around only one side of the
driving or driven wheel, we according to the present invention carry it round both
sides, that is to say, fore and aft of such wheel and fit it with a crank axle and chain
wheel, and in suitable position to enable such second crank axle to be driven by a
second rider we fix to a support carried by such D shaped tube a seat and a pair of
grip handles.
The extension of the D shaped tube is supported by stays connected thereto and to
the bearings of the driving or driven wheel.
The chains from both chain wheels drive on to chain hubs fixed to the axle of the
driving or driven wheel and said chains are both adjusted in tension in a somewhat
similar manner to that described in the specification of Letters Patent granted to us
dated February 6th 1886, No. 1775, but instead of employing a single tension rod for
such purpose we employ two adjustable thrust rods acting to push the end of the
D tube carrying the chain wheels and crank axles of the saine.
And in order that the said invention may be more clearly understood and readily
carried into effect we will proceed aided by the accompanying drawings more fully
to describe the same.
Figure 1 represents a side elevation of a safety tandem bicycle constructed according
to our present invention and Figure 2 is a plan of parts thereof separately.
a represents the driving or driven wheel which is mounted in bearings carried at
the lower end of the fork b, c represents the rear wheel which is mounted in bearings"
carried at the lower end of the fork d.
The forks band d are set at an angle, as shown, so that their upper portions
somewhat approach each other and they are connected together by a short backbone e
provided with fittings as shown or with other suitable fittings to permit of the motion
of each fork in relation thereto. The fork b has fixed thereto at its upper end an arm
or lever 6 and the fork d has fixed to its upper end a similar arm or lever d¹, these
arms or levers 6', d³, are connected together at their ends by a pin or stud 3 on the
one working in a slot d formed in the other.
The handle or steering bar is fixed in the usual way to the inclined bar or
axle of the front fork b.
By the above described construction of parts whenever the front wheel a is steered
in either direction the rear wheel c is by means of the arms or levers b¹, d¹
simultaneously moved in the contrary direction.
The back seat fis carried by a spring g of the form shown in the drawing or of
any other suitable form, connected to the necks e¹ or other suitable part of the
backbone e. When employing a spring g of the construction shown in the drawing
the lower rear portion of the said spring is formed with a fork sufficiently widened
out to permit the free motion of the inclined bar or axle d of the rear fork d.
The pedal shaft is of ordinary pattern and it is carried in a bracket or bearing
supported by a D shaped tube i which also acts as a mud guard as described in the
specification of Letters, Patent granted to us dated June 3rd 1886 No. 7465 but
according to our present invention instead of carrying the D shaped tube i, around
only one side of the driving or driven wheel a, we carry it round both sides, that is to
say, fore and aft of such wheel and fit it with a crank axle or pedal shaft ; and chain
wheel j' at the front of the said wheel a in addition to the shaft h and chain wheel h¹
at the rear of said wheel and in suitable position to enable such shaft or axle j to be
driven by a second rider we fix to a support carried by the front portion of the
D shaped tube a seat k and a pair of grip handles l.

page_text: The extension or front portion of the D shaped tube i is supported by stays m
connected thereto and to or near the bearings of the driving or driven wheel a.
The chains n from both chain wheels h, j, drive on to chain hubs a¹ fixed to the
axle or hub of the driving or driven wheel a and said chains are both adjusted in
tension in a somewhat similar manner to that described in the specification of Patent
No. 1775 of the year 1886 hereinbefore referred to but instead of employing a single
tension rod for such purpose we now employ two adjustable thrust rods o acting to
push the ends of the D tube i so as properly to stretch the chains n.
In the drawing we have represented the front part of the D tube i capable of
ready attachment to and removal from the machine but if desired it may be made a
permanent attachment thereto.
pis a guard or safety wheel.
The machine may be fitted with any convenient construction of brake apparatus.
Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed we declare that what we claim is :-
1. In combination with a safety bicycle constructed with wheels, a, c, inclined
forks b, d, short backbone e, arms or levers b', d', seat and crank axle h carried by a
D shaped tube i the addition of portion of D shaped tube, crank axle or pedal
shaft, stays m, thrust rods o, chain wheel j, chain n, seat support and grip handles
substantially as herein shown and described and for the purpose stated.
2. In combination with a safety bicycle constructed substantially as herein shown
and described, the employment of a D shaped tube i, ¹ extending around the
wheel a from front to rear thereof and carrying the crank shafts or pedal axles h. j.
seat support and grip handles and stayed by stays m and thrust rods o substantially
as herein shown and described and for the purpose stated.
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