IMPROVEMENTS IN TANDEM VELOCIPEDES
Year: 1885

page_text: We JOSEPH WHITE of Earlsdon near the City of Coventry in the County of
Warwick, Watch Manufacturer and JOHN ASBURY of the City of Coventry..
Machinist, do hereby declare the nature of our invention for "IMPROVEMENTS IN
TANDEM VELOCIPEDES," to be as follows:-
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This invention relates mainly to a novel construction of joint hearing which
serves to couple the front steering tricycle to the fork stem of the trailing backbone,
and also to take the axle of the travelling wheels.
In connecting together the two parts which form the tandem, we use a pair of
these joint bearings, which are preferably provided with antifriction balls. The
joint bearing consists mainly of two rings one of which is rebated on its periphery
to form a seat for the other.
Projecting tangentially from each of these rings is a stud screwed at its end to
receive a binding nut.
The stud of the one ring enters a lug on the cross bar of the tricycle and is
made fast thereto by a binding nut applied to its screwed end. In the same
manner the stud of the other ring is secured to a fork bracket on the fork stem of
the trailing backbone.
The rebated ring is threaded on its inner periphery to receive a flanged collar
which serves to hold in place the ring which it carries, and serves to form a side
support for the anti-friction balls of the bearing.
A similar screwed collar is provided on the other side of the bearing to complete
the grooves in which the balls run.
The flange of this collar is notched to receive a catch on the rebated rim which
catch locks it in its set position.
By the use of a pair of these joint bearings the tandem may be converted into
either one of two kinds of tricycles, that is, a tricycle with a single front steering
wheel and seat suitable for a lady, or a tricycle with a saddle and the travelling
wheels made to steer.
ปี
1007
NEWTON & SON,
Agents for the Applicants.

page_text: Improvements in Tandem Velocipedes.
We JOSEPH WHITE of Earlsdon, near the City of Coventry in the County of
Warwick, Watch Manufacturer, and JOHN ASBURY of the City of Coventry,
Machinist 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 mainly to a novel construction of joint bearing which
serves to couply the front steering tricycle to the fork stem of the trailing back-
bone, and also to take the axle of the travelling wheels.
In connecting together the two parts which form the tandem, we use a pair of
these joint bearings, which are preferably provided with antifriction balls, and we
so connect them with the frames of the two vehicles, as to permit of the facile
detachment therefrom of either vehicle, as circumstances may dictate.
In the accompanying drawings,
Fig. 1 represents in side elevation, partly in section, a tandem velocipede fitted
for two riders, and consisting of two frames connected detachably together, which
coupled frames have in common a pair of travelling wheels (to be driven by the
two riders), the front frame being fitted with a front steering wheel, and the hinder
frame with a trailing wheel.
Fig. 2 is a partial plan view of the central portion of the tandem velocipede on
an enlarged scale; and
Fig. 3 is a side view of the same.
In these Figures, A is the front frame and B the back frame connected together
through the travelling wheel axle C.
The frame A (see Fig. 1) consists of a backbone expanding rearwards into a.
fork A¹, and carrying at the junction of the parts a a tubular socket for the reception
of the stem of a saddle D. The extremities of the fork A' are formed with lugs to
connect with the joint E, the construction of which will be presently described.
The frame B consists also of a backbone fitted with a Stanley head B', from the
front of which projects a forked bracket B' made fast to the stem of the "Stanley
head." This fork, like the fork A¹, carries. lugs at its extremities to provide for its
connection with the joints E.
The frame B is fitted with a tubular socket for the reception of the stem of the
Beat F-G and Hare the crank shafts of the respective frames A and B, fitted with
chain wheels, as usual, for transmitting motion through chains and central gearing
to the travelling wheels.
The joint bearing E (see the cross section Fig. 4) consists mainly of two
rings e e', the ring e being rebated on its periphery to form a seat for the ring el.-
These rings are shown apart at Figs. 5 and 6, and fitted together at Fig. 7:
Projecting tangentially from each of these rings is a stud e² screwed at its end
to receive a binding nut e³, Figs. 2 and 3.
The stud of the one ring enters a lug in the fork A¹ of the front frame A, and is
made fast thereto by a binding nat applied to its screwed end. In the same
manner, the stud of the other ring is secured to the fork bracket B2 on the stem of

page_text: the Stanley head B₁ of the trailing backbone, and as a pair of these joints is used,
both ends of the forked extremities of the two frames will be similarly connected
together.
The rebated ring e is threaded on its inner periphery, through its whole breadth,
to receive a pair of screwed collars et es, which form the bearings for the axle C.-
The flanged collar e, shown detached at Fig. 8, serves to hold in place the ring e¹,
carried by the ring e, and forms also a side support for the antifriction balls of the
bearing. This flanged collar et, when screwed in place, is made fast to its ring by
a locking screw or its equivalent.
The screwed collar e completes the groove in the bearing for the reception of the
antifriction balls.-This collar is adjustable to compensate for the wear of the balls,
and the flange of this collar is notched to receive a catch e on the rebated rim,
which catch locks it in its set position.
The catch e is secured to a lug e' projecting from the periphery of the ring e.-
This lug serves also as a stop or abutting piece for a shoulder on the ring e', which,
in case of a breakdown of the hinder vehicle, would strike against the stop, and
prevent the fall of the hind rider, by temporarily sustaining the frame which
carries him.
From the foregoing description it will be understood that by the use of a pair of
these joint bearings, the tandem may be converted into either one of the two kinds
of tricycles, that is, a tricycle with a single front steering wheel and seat suitable
for a lady, or a tricycle with a saddle and the travelling wheels made to steer.
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
The use, in tandem velocipedes, of joint bearings constructed as above described,
for connecting the frames of the vehicles together, so as to give them an independent
vertical motion, and allow of their being readily disconnected for the purpose above
set forth.